WIP

.vscode/settings.json

@@ -11,6 +11,9 @@
         "nrf52.h": "c",
         "system_nrf52.h": "c",
         "system_nrf.h": "c",
-        "driver.h": "c"
+        "driver.h": "c",
+        "deque": "cpp",
+        "string": "cpp",
+        "vector": "cpp"
     }
 }

.vscode/tasks.json

@@ -1,15 +1,18 @@
 {
-    // See https://go.microsoft.com/fwlink/?LinkId=733558
-    // for the documentation about the tasks.json format
     "version": "2.0.0",
     "options": {
         "env": {
-            "PLATFORM": "nrf52",
+            // "APPLICATION": "button",
-            // "PLATFORM": "posix",
+            // "APPLICATION": "spi",
-            // "APPLICATION": "blinky",
+            "APPLICATION": "st7789_lcd",
-            "APPLICATION": "button",
         },
     },
+    "presentation": {
+        "focus": true,
+        "reveal": "always",
+        "panel": "shared",
+        "clear": true,
+    },
     "tasks": [
         {
             "label": "all",
@@ -78,12 +81,23 @@
                 "kind": "build",
                 "isDefault": true
             }
-        }
+        },
-    ],
+        {
-    "presentation": {
+            "label": "check",
-        "focus": true,
+            "type":"shell",
-        "reveal": "always",
+            "command": "make check",
-        "panel": "shared",
+            "problemMatcher": {
-        "clear": true,
+                "base": "$gcc",
+                "owner": "gcc",
+                "fileLocation": [
+                    "relative",
+                    "${workspaceFolder}"
+                ]
+            },
+            "group": {
+                "kind": "build",
+                "isDefault": true
             }
         }
+    ]
+}

Makefile

@@ -1,13 +1,22 @@
 .DEFAULT_GOAL := all
 
-APPLICATION ?= button
+APPLICATION ?= blinky
+
+PLATFORM ?= nrf52
+
+ifneq "$(findstring $(PLATFORM), nrf52)" ""
+CORE = cm4
+endif
 
-PLATFORM ?= posix
 TARGET_FILE ?= $(APPLICATION).elf
 
 CC = $(CROSS_COMPILE)gcc
 CPP = $(CROSS_COMPILE)cpp
+CXX = $(CROSS_COMPILE)g++
 OBJCOPY = $(CROSS_COMPILE)objcopy
+OBJDUMP = $(CROSS_COMPILE)objdump
+SIZE = $(CROSS_COMPILE)size
+CHECK = cppcheck
 
 SRC_DIR = src
 OBJ_DIR = obj/$(PLATFORM)
@@ -18,30 +27,48 @@ CPP_FLAGS += $(addprefix -I, $(INCLUDES))
 C_SRCS = $(wildcard $(SRC_DIR)/*.c)
 C_SRCS += $(wildcard $(SRC_DIR)/platform/$(PLATFORM)/*.c)
 C_SRCS += $(wildcard $(SRC_DIR)/application/$(APPLICATION)/*.c)
-C_OBJS = $(patsubst $(SRC_DIR)%,$(OBJ_DIR)%,$(patsubst %.c,%.o,$(C_SRCS)))
+C_OBJS = $(patsubst $(SRC_DIR)%,$(OBJ_DIR)%,$(patsubst %.c,%.c.o,$(C_SRCS)))
-OBJS = $(NRF_A_OBJS) $(NRF_C_OBJS) $(C_OBJS)
+
+CC_SRCS = $(wildcard $(SRC_DIR)/*.cc)
+CC_SRCS += $(wildcard $(SRC_DIR)/platform/$(CORE)/*.cc)
+CC_SRCS += $(wildcard $(SRC_DIR)/platform/$(PLATFORM)/*.cc)
+CC_SRCS += $(wildcard $(SRC_DIR)/application/$(APPLICATION)/*.cc)
+CC_SRCS += $(wildcard $(SRC_DIR)/virtual_timer/*.cc)
+CC_OBJS = $(patsubst $(SRC_DIR)%,$(OBJ_DIR)%,$(patsubst %.cc,%.cc.o,$(CC_SRCS)))
+
+OBJS = $(A_OBJS) $(C_OBJS) $(CC_OBJS)
 
 TARGET = $(BIN_DIR)/$(TARGET_FILE)
 TARGET_HEX = $(patsubst %.elf,%.hex,$(TARGET))
 TARGET_PACKAGE = $(patsubst %.hex,%.zip,$(TARGET_HEX))
 THIS_MAKEFILE := $(lastword $(MAKEFILE_LIST))
 
+INCLUDES += src/
+INCLUDES += interfaces/
 INCLUDES += include/
+INCLUDES += include/platform/$(PLATFORM)
 
 OPT = 3
 C_FLAGS += -O$(OPT) -g$(OPT)
 C_FLAGS += -Wall -Werror
 C_FLAGS += -ffunction-sections -fdata-sections -fno-strict-aliasing
+C_FLAGS += -DPLATFORM_$(PLATFORM)
 
-LIBS += c nosys m
+CXX_FLAGS += -O$(OPT) -g$(OPT)
+CXX_FLAGS += -Wall -Werror
+CXX_FLAGS += -ffunction-sections -fdata-sections -fno-strict-aliasing
+CXX_FLAGS += -DPLATFORM_$(PLATFORM)
 
-include Makefile.$(PLATFORM)
+CHECK_FLAGS = $(addprefix -I,$(INCLUDES))
+CHECK_FLAGS += --enable=all --template=gcc --error-exitcode=1 --suppress=missingIncludeSystem --inline-suppr --force --language=c++
 
-.PHONY: all install uninstall clean distclean debug
+include build_system/platform/$(PLATFORM)/Makefile
+
+.PHONY: all install uninstall clean distclean debug check
 all: $(TARGET)
 
 debug:
-	@echo $(TARGET_HEX)
+	@echo $(CC_OBJS)
 
 clean:
 	rm -f $(TARGET) $(TARGET_HEX) $(TARGET_PACKAGE)
@@ -50,23 +77,48 @@ clean:
 distclean:
 	rm -rf bin obj
 
+.PHONY:
+check: $(C_SRCS)
+	$(CHECK) $(CHECK_FLAGS) $(CC_SRCS)
+
 $(TARGET): $(OBJS) $(THIS_MAKEFILE)
 	@mkdir -p $(dir $@)
-	$(CC) $(CC_FLAGS) $(LD_FLAGS) $(OBJS) $(addprefix -l,$(LIBS)) -o $@
+	$(CXX) $(CXX_FLAGS) $(LD_FLAGS) $(OBJS) $(addprefix -l,$(LIBS)) -Wl,-Map=$@.map -o $@
+	# $(OBJDUMP) --disassemble-all --section=.text --source -EL -C --wide  --line-numbers --inlines $@ > $@.text.disassemble
 	ln -sf $(shell pwd)/$@ $(shell pwd)/bin/firmware.elf
+	$(SIZE) -x $@ > $@.size
+	@cat $@.size
 
 $(TARGET_HEX): $(TARGET) $(THIS_MAKEFILE)
 	$(OBJCOPY) -O ihex $(TARGET) $(TARGET_HEX)
 	ln -sf $(shell pwd)/$@ $(shell pwd)/bin/firmware.hex
 
-$(OBJ_DIR)/%.d: $(SRC_DIR)/%.c
+$(OBJ_DIR)/%.d: $(SRC_DIR)/%.S $(THIS_MAKEFILE)
 	@mkdir -p $(dir $@)
-	$(CPP) -MM -MF $@ -MP -MT $(patsubst %.d,%.o,$@) $(C_FLAGS) $(CPP_FLAGS) $(patsubst $(OBJ_DIR)/%.d,$(SRC_DIR)/%.c,$@)
+	$(CPP) -MM -MF $@ -MP -MT $(patsubst %.d,%.o,$@) $(C_FLAGS) $(CPP_FLAGS) $(patsubst $(OBJ_DIR)/%.d,$(SRC_DIR)/%.S,$@)
 
-$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
+$(OBJ_DIR)/%.c.d: $(SRC_DIR)/%.c $(THIS_MAKEFILE)
+	mkdir -p $(dir $@)
+	$(CPP) -MM -MF $@ -MP -MT $(patsubst %.c.d,%.c.o,$@) $(C_FLAGS) $(CPP_FLAGS) $(patsubst $(OBJ_DIR)/%.c.d,$(SRC_DIR)/%.c,$@)
+
+$(OBJ_DIR)/%.cc.d: $(SRC_DIR)/%.cc $(THIS_MAKEFILE)
+	@mkdir -p $(dir $@)
+	$(CPP) -MM -MF $@ -MP -MT $(patsubst %.cc.d,%.cc.o,$@) $(CXX_FLAGS) $(CPP_FLAGS) $(patsubst $(OBJ_DIR)/%.cc.d,$(SRC_DIR)/%.cc,$@)
+
+$(OBJ_DIR)/%.cc.o: $(SRC_DIR)/%.cc $(THIS_MAKEFILE)
+	@mkdir -p $(dir $@)
+	$(CXX) -c $(CPP_FLAGS) $(CXX_FLAGS) $< -o $@
+
+$(OBJ_DIR)/%.c.o: $(SRC_DIR)/%.c $(THIS_MAKEFILE)
 	@mkdir -p $(dir $@)
 	$(CC) -c $(CPP_FLAGS) $(C_FLAGS) $< -o $@
 
+$(OBJ_DIR)/%.o: $(SRC_DIR)/%.S $(THIS_MAKEFILE)
+	@mkdir -p $(dir $@)
+	$(CC) -c $(ASMFLAGS) $< -o $@
+
 ifeq "$(findstring $(MAKECMDGOALS), clean distclean)" ""
--include $(patsubst %.o,%.d,$(OBJS))
+include $(patsubst %.o,%.d,$(A_OBJS))
+include $(patsubst %.c.o,%.c.d,$(C_OBJS))
+include $(patsubst %.cc.o,%.cc.d,$(CC_OBJS))
 endif

Makefile.nrf52

@@ -1,108 +0,0 @@
-CPU = cortex-m4
-CROSS_COMPILE ?= arm-none-eabi-
-
-NRF_PATH := nrf5sdk/
-INCLUDES += $(NRF_PATH)components/
-INCLUDES += $(NRF_PATH)modules/nrfx/mdk/
-INCLUDES += $(NRF_PATH)components/libraries/strerror/
-INCLUDES += $(NRF_PATH)components/softdevice/s132/headers/nrf52/
-INCLUDES += $(NRF_PATH)components/toolchain/cmsis/include/
-INCLUDES += $(NRF_PATH)components/libraries/util/
-INCLUDES += $(NRF_PATH)components/libraries/balloc/
-INCLUDES += $(NRF_PATH)components/libraries/ringbuf/
-INCLUDES += $(NRF_PATH)modules/nrfx/hal/
-INCLUDES += $(NRF_PATH)components/libraries/bsp/
-INCLUDES += $(NRF_PATH)components/libraries/log/
-INCLUDES += $(NRF_PATH)modules/nrfx/
-INCLUDES += $(NRF_PATH)components/libraries/experimental_section_vars/
-INCLUDES += $(NRF_PATH)components/softdevice/s132/headers/
-INCLUDES += $(NRF_PATH)components/libraries/delay/
-INCLUDES += $(NRF_PATH)integration/nrfx/
-INCLUDES += $(NRF_PATH)components/libraries/atomic/
-INCLUDES += $(NRF_PATH)components/boards/
-INCLUDES += $(NRF_PATH)components/libraries/memobj/
-INCLUDES += $(NRF_PATH)components/softdevice/common/
-INCLUDES += $(NRF_PATH)external/fprintf/
-INCLUDES += $(NRF_PATH)components/libraries/log/src/
-
-NRF_C_SRCS += $(NRF_PATH)components/boards/boards.c
-NRF_C_SRCS += $(NRF_PATH)modules/nrfx/mdk/system_nrf52.c
-NRF_C_OBJS = $(patsubst $(NRF_PATH)%,$(OBJ_DIR)/%,$(patsubst %.c,%.o,$(NRF_C_SRCS)))
-
-NRF_A_SRCS = $(NRF_PATH)modules/nrfx/mdk/gcc_startup_nrf52.S
-NRF_A_OBJS = $(patsubst $(NRF_PATH)%,$(OBJ_DIR)/%,$(patsubst %.S,%.o,$(NRF_A_SRCS)))
-
-C_FLAGS += -DBOARD_PCA10040
-C_FLAGS += -DBSP_DEFINES_ONLY
-C_FLAGS += -DCONFIG_GPIO_AS_PINRESET
-C_FLAGS += -DFLOAT_ABI_HARD
-C_FLAGS += -DNRF52
-C_FLAGS += -DNRF52832_XXAA
-C_FLAGS += -DNRF52_PAN_74
-C_FLAGS += -DNRF_SD_BLE_API_VERSION=7
-C_FLAGS += -DS132
-C_FLAGS += -DSOFTDEVICE_PRESENT
-C_FLAGS += -mcpu=$(CPU)
-C_FLAGS += -mthumb -mabi=aapcs
-C_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
-C_FLAGS += -fno-builtin -fshort-enums
-C_FLAGS += -D__HEAP_SIZE=8192
-C_FLAGS += -D__HEAP_SIZE=8192
-
-# Assembler flags common to all targets
-A_FLAGS += -g$(OPT)
-A_FLAGS += -mcpu=$(CPU)
-A_FLAGS += -mthumb -mabi=aapcs
-A_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
-A_FLAGS += -DBOARD_PCA10040
-A_FLAGS += -DBSP_DEFINES_ONLY
-A_FLAGS += -DCONFIG_GPIO_AS_PINRESET
-A_FLAGS += -DFLOAT_ABI_HARD
-A_FLAGS += -DNRF52
-A_FLAGS += -DNRF52832_XXAA
-A_FLAGS += -DNRF52_PAN_74
-A_FLAGS += -DNRF_SD_BLE_API_VERSION=7
-A_FLAGS += -DS132
-A_FLAGS += -DSOFTDEVICE_PRESENT
-A_FLAGS += -D__HEAP_SIZE=8192
-A_FLAGS += -D__HEAP_SIZE=8192
-
-LINKER_SCRIPT = blinky_gcc_nrf52.ld
-# Linker flags
-LD_FLAGS += -O$(OPT) -g$(OPT)
-LD_FLAGS += -mthumb -mabi=aapcs -L$(NRF_PATH)modules/nrfx/mdk -T$(LINKER_SCRIPT)
-LD_FLAGS += -mcpu=$(CPU)
-LD_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
-LD_FLAGS += -Wl,--gc-sections
-LD_FLAGS += --specs=nano.specs
-
-.PHONY: package flash flash_softdevice erase
-
-package: $(TARGET_HEX) $(THIS_MAKEFILE)
-	nrfutil pkg generate --hw-version 52 --application-version 1 --application $(TARGET_HEX) --sd-req 0xCB --sd-id 0xCB --key-file keys/private.key $(TARGET_PACKAGE)
-
-flash: $(TARGET_HEX) $(THIS_MAKEFILE)
-	@echo Flashing: $(TARGET_HEX)
-	nrfjprog -f nrf52 --program $(TARGET_HEX) --sectorerase
-	nrfjprog -f nrf52 --reset
-
-flash_softdevice:
-	@echo Flashing: $(NRF_PATH)/components/softdevice/s132/hex/s132_nrf52_7.0.1_softdevice.hex
-	nrfjprog -f nrf52 --program $(NRF_PATH)/components/softdevice/s132/hex/s132_nrf52_7.0.1_softdevice.hex --sectorerase
-	nrfjprog -f nrf52 --reset
-
-erase:
-	nrfjprog -f nrf52 --eraseall
-
-$(OBJ_DIR)/%.d: $(NRF_PATH)/%.S
-	@mkdir -p $(dir $@)
-	$(CPP) -MM -MF $@ -MP -MT $(patsubst %.d,%.o,$@) $(C_FLAGS) $(CPP_FLAGS) $(patsubst $(OBJ_DIR)/%.d,$(NRF_PATH)/%.S,$@)
-
-$(OBJ_DIR)/%.o: $(NRF_PATH)/%.c
-	@mkdir -p $(dir $@)
-	$(CC) -std=c99 -MP -MD -c -o $@ $< $(C_FLAGS) $(CPP_FLAGS)
-
-$(OBJ_DIR)/%.o: $(NRF_PATH)/%.S
-	@mkdir -p $(dir $@)
-	$(CC) -c $(ASMFLAGS) $< -o $@
-

build_system/platform/nrf52/Makefile

@@ -0,0 +1,95 @@
+CPU = cortex-m4
+CROSS_COMPILE ?= arm-none-eabi-
+
+NRF_PATH := nrf5sdk/
+
+INCLUDES += src/platform/nrf52/sdk
+INCLUDES += src/platform/cm4/cmsis/include
+
+NRF_C_SRCS += src/platform/nrf52/sdk/system_nrf52.c
+C_OBJS += $(patsubst $(SRC_DIR)%,$(OBJ_DIR)%,$(patsubst %.c,%.c.o,$(NRF_C_SRCS)))
+
+NRF_A_SRCS = src/platform/nrf52/sdk/gcc_startup_nrf52.S
+A_OBJS += $(patsubst $(SRC_DIR)%,$(OBJ_DIR)/%,$(patsubst %.S,%.o,$(NRF_A_SRCS)))
+
+C_FLAGS += -DBOARD_PCA10040
+C_FLAGS += -DBSP_DEFINES_ONLY
+C_FLAGS += -DCONFIG_GPIO_AS_PINRESET
+C_FLAGS += -DFLOAT_ABI_HARD
+C_FLAGS += -DNRF52
+C_FLAGS += -DNRF52832_XXAA
+C_FLAGS += -DNRF52_PAN_74
+# C_FLAGS += -DNRF_SD_BLE_API_VERSION=7
+# C_FLAGS += -DS132
+# C_FLAGS += -DSOFTDEVICE_PRESENT
+C_FLAGS += -mcpu=$(CPU)
+C_FLAGS += -mthumb -mabi=aapcs
+C_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
+C_FLAGS += -fno-builtin -fshort-enums
+C_FLAGS += -D__HEAP_SIZE=8192
+C_FLAGS += -D__HEAP_SIZE=8192
+
+CXX_FLAGS += -DBOARD_PCA10040
+CXX_FLAGS += -DBSP_DEFINES_ONLY
+CXX_FLAGS += -DCONFIG_GPIO_AS_PINRESET
+CXX_FLAGS += -DFLOAT_ABI_HARD
+CXX_FLAGS += -DNRF52
+CXX_FLAGS += -DNRF52832_XXAA
+CXX_FLAGS += -DNRF52_PAN_74
+# CXX_FLAGS += -DNRF_SD_BLE_API_VERSION=7
+# CXX_FLAGS += -DS132
+# CXX_FLAGS += -DSOFTDEVICE_PRESENT
+CXX_FLAGS += -mcpu=$(CPU)
+CXX_FLAGS += -mthumb -mabi=aapcs
+CXX_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
+CXX_FLAGS += -fno-builtin -fshort-enums
+CXX_FLAGS += -D__HEAP_SIZE=8192
+CXX_FLAGS += -D__HEAP_SIZE=8192
+
+# Assembler flags common to all targets
+A_FLAGS += -g$(OPT)
+A_FLAGS += -mcpu=$(CPU)
+A_FLAGS += -mthumb -mabi=aapcs
+A_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
+A_FLAGS += -DBOARD_PCA10040
+A_FLAGS += -DBSP_DEFINES_ONLY
+A_FLAGS += -DCONFIG_GPIO_AS_PINRESET
+A_FLAGS += -DFLOAT_ABI_HARD
+A_FLAGS += -DNRF52
+A_FLAGS += -DNRF52832_XXAA
+A_FLAGS += -DNRF52_PAN_74
+# A_FLAGS += -DNRF_SD_BLE_API_VERSION=7
+# A_FLAGS += -DS132
+# A_FLAGS += -DSOFTDEVICE_PRESENT
+A_FLAGS += -D__HEAP_SIZE=8192
+A_FLAGS += -D__HEAP_SIZE=8192
+
+LINKER_SCRIPT = without_sd.ld
+
+# Linker flags
+LD_FLAGS += -O$(OPT) -g$(OPT)
+LD_FLAGS += -mthumb -mabi=aapcs -Lbuild_system/platform/$(PLATFORM) -T$(LINKER_SCRIPT)
+LD_FLAGS += -mcpu=$(CPU)
+LD_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
+LD_FLAGS += -Wl,--gc-sections
+LD_FLAGS += --specs=nano.specs
+
+LIBS += c nosys m
+
+.PHONY: package flash flash_softdevice erase
+
+package: $(TARGET_HEX)
+	nrfutil pkg generate --hw-version 52 --application-version 1 --application $(TARGET_HEX) --sd-req 0xCB --sd-id 0xCB --key-file keys/private.key $(TARGET_PACKAGE)
+
+flash: $(TARGET_HEX)
+	@echo Flashing: $(TARGET_HEX)
+	nrfjprog -f nrf52 --program $(TARGET_HEX) --sectorerase
+	nrfjprog -f nrf52 --reset
+
+flash_softdevice: $(THIS_MAKEFILE)
+	@echo Flashing: $(NRF_PATH)/components/softdevice/s132/hex/s132_nrf52_7.0.1_softdevice.hex
+	nrfjprog -f nrf52 --program $(NRF_PATH)/components/softdevice/s132/hex/s132_nrf52_7.0.1_softdevice.hex --sectorerase
+	nrfjprog -f nrf52 --reset
+
+erase:
+	nrfjprog -f nrf52 --eraseall

build_system/platform/nrf52/nrf_common.ld

@@ -0,0 +1,168 @@
+/* Linker script for Nordic Semiconductor nRF devices
+ *
+ * Version: Sourcery G++ 4.5-1
+ * Support: https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapBase
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+    .text :
+    {
+        KEEP(*(.isr_vector))
+        *(.text*)
+
+        KEEP(*(.init))
+        KEEP(*(.fini))
+
+        /* .ctors */
+        *crtbegin.o(.ctors)
+        *crtbegin?.o(.ctors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+        *(SORT(.ctors.*))
+        *(.ctors)
+
+        /* .dtors */
+        *crtbegin.o(.dtors)
+        *crtbegin?.o(.dtors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+        *(SORT(.dtors.*))
+        *(.dtors)
+
+        *(.rodata*)
+
+        KEEP(*(.eh_frame*))
+    } > FLASH
+
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } > FLASH
+
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > FLASH
+    __exidx_end = .;
+
+    __etext = .;
+
+    .data : AT (__etext)
+    {
+        __data_start__ = .;
+        *(vtable)
+        *(.data*)
+
+        . = ALIGN(4);
+        /* preinit data */
+        PROVIDE_HIDDEN (__preinit_array_start = .);
+        KEEP(*(.preinit_array))
+        PROVIDE_HIDDEN (__preinit_array_end = .);
+
+        . = ALIGN(4);
+        /* init data */
+        PROVIDE_HIDDEN (__init_array_start = .);
+        KEEP(*(SORT(.init_array.*)))
+        KEEP(*(.init_array))
+        PROVIDE_HIDDEN (__init_array_end = .);
+
+
+        . = ALIGN(4);
+        /* finit data */
+        PROVIDE_HIDDEN (__fini_array_start = .);
+        KEEP(*(SORT(.fini_array.*)))
+        KEEP(*(.fini_array))
+        PROVIDE_HIDDEN (__fini_array_end = .);
+
+        KEEP(*(.jcr*))
+        . = ALIGN(4);
+        /* All data end */
+        __data_end__ = .;
+
+    } > RAM
+
+    .bss :
+    {
+        . = ALIGN(4);
+        __bss_start__ = .;
+        *(.bss*)
+        *(COMMON)
+        . = ALIGN(4);
+        __bss_end__ = .;
+    } > RAM
+    
+    .heap (COPY):
+    {
+        __HeapBase = .;
+        __end__ = .;
+        PROVIDE(end = .);
+        KEEP(*(.heap*))
+        __HeapLimit = .;
+    } > RAM
+
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy (COPY):
+    {
+        KEEP(*(.stack*))
+    } > RAM
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+    PROVIDE(__stack = __StackTop);
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+    
+    /* Check if text sections + data exceeds FLASH limit */
+    DataInitFlashUsed = __bss_start__ - __data_start__;
+    CodeFlashUsed = __etext - ORIGIN(FLASH);
+    TotalFlashUsed = CodeFlashUsed + DataInitFlashUsed;
+    ASSERT(TotalFlashUsed <= LENGTH(FLASH), "region FLASH overflowed with .data and user data")
+    
+}

build_system/platform/nrf52/without_sd.ld

@@ -0,0 +1,64 @@
+/* Linker script to configure memory regions. */
+
+SEARCH_DIR(.)
+GROUP(-lgcc -lc -lnosys)
+
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x0, LENGTH = 0x80000
+  RAM (rwx) :  ORIGIN = 0x20000000, LENGTH = 0x10000
+}
+
+SECTIONS
+{
+}
+
+SECTIONS
+{
+  . = ALIGN(4);
+  .mem_section_dummy_ram :
+  {
+  }
+  .log_dynamic_data :
+  {
+    PROVIDE(__start_log_dynamic_data = .);
+    KEEP(*(SORT(.log_dynamic_data*)))
+    PROVIDE(__stop_log_dynamic_data = .);
+  } > RAM
+  .log_filter_data :
+  {
+    PROVIDE(__start_log_filter_data = .);
+    KEEP(*(SORT(.log_filter_data*)))
+    PROVIDE(__stop_log_filter_data = .);
+  } > RAM
+
+} INSERT AFTER .data;
+
+SECTIONS
+{
+  .mem_section_dummy_rom :
+  {
+  }
+  .log_const_data :
+  {
+    PROVIDE(__start_log_const_data = .);
+    KEEP(*(SORT(.log_const_data*)))
+    PROVIDE(__stop_log_const_data = .);
+  } > FLASH
+  .log_backends :
+  {
+    PROVIDE(__start_log_backends = .);
+    KEEP(*(SORT(.log_backends*)))
+    PROVIDE(__stop_log_backends = .);
+  } > FLASH
+    .nrf_balloc :
+  {
+    PROVIDE(__start_nrf_balloc = .);
+    KEEP(*(.nrf_balloc))
+    PROVIDE(__stop_nrf_balloc = .);
+  } > FLASH
+
+} INSERT AFTER .text
+
+
+INCLUDE "nrf_common.ld"

include/board.h

@@ -1,8 +0,0 @@
-#ifndef __BOARD_H__
-#define __BOARD_H__
-
-#ifdef BOARD_PCA10040
-#include "platform/narf52/narf52_dk.h"
-#endif
-
-#endif

include/driver.h

@@ -1,34 +0,0 @@
-#ifndef __DRIVER_H__
-#define __DRIVER_H__
-
-#include <stdarg.h>
-
-struct driver;
-
-typedef int (*fp_open_t)(const struct driver *);
-typedef int (*fp_close_t)(const struct driver *);
-typedef int (*fp_read_t)(const struct driver *, char *, unsigned int);
-typedef int (*fp_write_t)(const struct driver *, const char *, unsigned int);
-typedef int (*fp_ioctl_t)(const struct driver *, unsigned int, unsigned int argc, va_list);
-
-struct driver_fp {
-    fp_open_t   open;
-    fp_close_t  close;
-    fp_read_t   read;
-    fp_write_t  write;
-    fp_ioctl_t  ioctl;
-};
-
-struct driver {
-    const char *name;
-    const struct driver_fp *fp;
-    const void *dev;
-};
-
-int drv_open(const struct driver *drv);
-int drv_close(const struct driver *drv);
-int drv_read(const struct driver *drv, char *buffer, unsigned int length);
-int drv_write(const struct driver *drv, const char *buffer, unsigned int length);
-int drv_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, ...);
-
-#endif

include/gpio.h

@@ -1,23 +0,0 @@
-    #ifndef __GPIO_H__
-    #define __GPIO_H__
-
-    #include <stdarg.h>
-
-    #include "driver.h"
-
-    int gpio_open(const struct driver *drv);
-    int gpio_close(const struct driver *drv);
-
-    int gpio_read(const struct driver *drv, char *buffer, unsigned int len);
-    int gpio_write(const struct driver *drv, const char *buffer, unsigned int len);
-    int gpio_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, va_list args);
-
-    static const struct driver_fp gpio_fp = {
-        .open = gpio_open,
-        .close = gpio_close,
-        .read = gpio_read,
-        .write = gpio_write,
-        .ioctl = gpio_ioctl
-    };
-
-    #endif

include/platform/narf52/narf52.h

@@ -1,100 +0,0 @@
-#ifndef __PLATFORM_NARF52_NARF52_H__
-#define __PLATFORM_NARF52_NARF52_H__
-
-#include <stdint.h>
-
-typedef enum {
-/* =======================================  ARM Cortex-M4 Specific Interrupt Numbers  ======================================== */
-  Reset_IRQn                = -15,              /*!< -15  Reset Vector, invoked on Power up and warm reset                     */
-  NonMaskableInt_IRQn       = -14,              /*!< -14  Non maskable Interrupt, cannot be stopped or preempted               */
-  HardFault_IRQn            = -13,              /*!< -13  Hard Fault, all classes of Fault                                     */
-  MemoryManagement_IRQn     = -12,              /*!< -12  Memory Management, MPU mismatch, including Access Violation
-                                                     and No Match                                                              */
-  BusFault_IRQn             = -11,              /*!< -11  Bus Fault, Pre-Fetch-, Memory Access Fault, other address/memory
-                                                     related Fault                                                             */
-  UsageFault_IRQn           = -10,              /*!< -10  Usage Fault, i.e. Undef Instruction, Illegal State Transition        */
-  SVCall_IRQn               =  -5,              /*!< -5 System Service Call via SVC instruction                                */
-  DebugMonitor_IRQn         =  -4,              /*!< -4 Debug Monitor                                                          */
-  PendSV_IRQn               =  -2,              /*!< -2 Pendable request for system service                                    */
-  SysTick_IRQn              =  -1,              /*!< -1 System Tick Timer                                                      */
-/* ===========================================  nrf52 Specific Interrupt Numbers  ============================================ */
-  POWER_CLOCK_IRQn          =   0,              /*!< 0  POWER_CLOCK                                                            */
-  RADIO_IRQn                =   1,              /*!< 1  RADIO                                                                  */
-  UARTE0_UART0_IRQn         =   2,              /*!< 2  UARTE0_UART0                                                           */
-  SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn=   3,  /*!< 3  SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0                                      */
-  SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn=   4,  /*!< 4  SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1                                      */
-  NFCT_IRQn                 =   5,              /*!< 5  NFCT                                                                   */
-  GPIOTE_IRQn               =   6,              /*!< 6  GPIOTE                                                                 */
-  SAADC_IRQn                =   7,              /*!< 7  SAADC                                                                  */
-  TIMER0_IRQn               =   8,              /*!< 8  TIMER0                                                                 */
-  TIMER1_IRQn               =   9,              /*!< 9  TIMER1                                                                 */
-  TIMER2_IRQn               =  10,              /*!< 10 TIMER2                                                                 */
-  RTC0_IRQn                 =  11,              /*!< 11 RTC0                                                                   */
-  TEMP_IRQn                 =  12,              /*!< 12 TEMP                                                                   */
-  RNG_IRQn                  =  13,              /*!< 13 RNG                                                                    */
-  ECB_IRQn                  =  14,              /*!< 14 ECB                                                                    */
-  CCM_AAR_IRQn              =  15,              /*!< 15 CCM_AAR                                                                */
-  WDT_IRQn                  =  16,              /*!< 16 WDT                                                                    */
-  RTC1_IRQn                 =  17,              /*!< 17 RTC1                                                                   */
-  QDEC_IRQn                 =  18,              /*!< 18 QDEC                                                                   */
-  COMP_LPCOMP_IRQn          =  19,              /*!< 19 COMP_LPCOMP                                                            */
-  SWI0_EGU0_IRQn            =  20,              /*!< 20 SWI0_EGU0                                                              */
-  SWI1_EGU1_IRQn            =  21,              /*!< 21 SWI1_EGU1                                                              */
-  SWI2_EGU2_IRQn            =  22,              /*!< 22 SWI2_EGU2                                                              */
-  SWI3_EGU3_IRQn            =  23,              /*!< 23 SWI3_EGU3                                                              */
-  SWI4_EGU4_IRQn            =  24,              /*!< 24 SWI4_EGU4                                                              */
-  SWI5_EGU5_IRQn            =  25,              /*!< 25 SWI5_EGU5                                                              */
-  TIMER3_IRQn               =  26,              /*!< 26 TIMER3                                                                 */
-  TIMER4_IRQn               =  27,              /*!< 27 TIMER4                                                                 */
-  PWM0_IRQn                 =  28,              /*!< 28 PWM0                                                                   */
-  PDM_IRQn                  =  29,              /*!< 29 PDM                                                                    */
-  MWU_IRQn                  =  32,              /*!< 32 MWU                                                                    */
-  PWM1_IRQn                 =  33,              /*!< 33 PWM1                                                                   */
-  PWM2_IRQn                 =  34,              /*!< 34 PWM2                                                                   */
-  SPIM2_SPIS2_SPI2_IRQn     =  35,              /*!< 35 SPIM2_SPIS2_SPI2                                                       */
-  RTC2_IRQn                 =  36,              /*!< 36 RTC2                                                                   */
-  I2S_IRQn                  =  37,              /*!< 37 I2S                                                                    */
-  FPU_IRQn                  =  38               /*!< 38 FPU                                                                    */
-} IRQn_Type;
-
-
-/* =========================================================================================================================== */
-/* ================                           Processor and Core Peripheral Section                           ================ */
-/* =========================================================================================================================== */
-
-/* ===========================  Configuration of the ARM Cortex-M4 Processor and Core Peripherals  =========================== */
-#define __CM4_REV                 0x0001U       /*!< CM4 Core Revision                                                         */
-#define __DSP_PRESENT                  0        /*!< DSP present or not                                                        */
-#define __VTOR_PRESENT                 1        /*!< Set to 1 if CPU supports Vector Table Offset Register                     */
-#define __NVIC_PRIO_BITS               3        /*!< Number of Bits used for Priority Levels                                   */
-#define __Vendor_SysTickConfig         0        /*!< Set to 1 if different SysTick Config is used                              */
-#define __MPU_PRESENT                  1        /*!< MPU present                                                               */
-#define __FPU_PRESENT                  1        /*!< FPU present                                                               */
-
-#include "core_cm4.h"
-
-struct narf52_gpio_type {                       /*!< (@ 0x50000000) P0 Structure                                               */
-    __IM  uint32_t  RESERVED[321];
-    __IOM uint32_t  OUT;                        /*!< (@ 0x00000504) Write GPIO port                                            */
-    __IOM uint32_t  OUTSET;                     /*!< (@ 0x00000508) Set individual bits in GPIO port                           */
-    __IOM uint32_t  OUTCLR;                     /*!< (@ 0x0000050C) Clear individual bits in GPIO port                         */
-    __IM  uint32_t  IN;                         /*!< (@ 0x00000510) Read GPIO port                                             */
-    __IOM uint32_t  DIR;                        /*!< (@ 0x00000514) Direction of GPIO pins                                     */
-    __IOM uint32_t  DIRSET;                     /*!< (@ 0x00000518) DIR set register                                           */
-    __IOM uint32_t  DIRCLR;                     /*!< (@ 0x0000051C) DIR clear register                                         */
-    __IOM uint32_t  LATCH;                      /*!< (@ 0x00000520) Latch register indicating what GPIO pins that
-                                                                    have met the criteria set in the PIN_CNF[n].SENSE
-                                                                    registers                                                  */
-    __IOM uint32_t  DETECTMODE;                 /*!< (@ 0x00000524) Select between default DETECT signal behaviour
-                                                                    and LDETECT mode                                           */
-    __IM  uint32_t  RESERVED1[118];
-    __IOM uint32_t  PIN_CNF[32];                /*!< (@ 0x00000700) Description collection[0]: Configuration of GPIO
-                                                                    pins                                                       */
-};                                              /*!< Size = 1920 (0x780)                                                       */
-
-
-
-#define NARF_P0_BASE                 0x50000000UL
-
-
-#endif

include/platform/narf52/narf52_dk.h

@@ -1,131 +0,0 @@
-#ifndef __PLATFORM_NARF52_NARF52_DK_H
-#define __PLATFORM_NARF52_NARF52_DK_H
-
-#include "gpio.h"
-#include "narf52_gpio.h"
-
-#include "driver.h"
-
-// LEDs
-const struct narf52_gpio narf_led_1 = {
-    .pin_number = 17,
-    .dir = NARF_GPIO_DIR_OUT,
-    .input = NARF_GPIO_PIN_INPUT_DISCONNECT,
-    .pull = NARF_GPIO_PIN_NOPULL,
-    .drive = NARF_GPIO_PIN_S0S1,
-    .sense = NARF_GPIO_PIN_NOSENSE,
-};
-
-const struct driver led_1 = {
-    .name = "LED_1",
-    .fp = &gpio_fp,
-    .dev = (void *)&narf_led_1,
-};
-
-const struct narf52_gpio narf_led_2 = {
-    .pin_number = 18,
-    .dir = NARF_GPIO_DIR_OUT,
-    .input = NARF_GPIO_PIN_INPUT_DISCONNECT,
-    .pull = NARF_GPIO_PIN_NOPULL,
-    .drive = NARF_GPIO_PIN_S0S1,
-    .sense = NARF_GPIO_PIN_NOSENSE,
-};
-
-const struct driver led_2 = {
-    .name = "LED_2",
-    .fp = &gpio_fp,
-    .dev = (void *)&narf_led_2,
-};
-
-const struct narf52_gpio narf_led_3 = {
-    .pin_number = 19,
-    .dir = NARF_GPIO_DIR_OUT,
-    .input = NARF_GPIO_PIN_INPUT_DISCONNECT,
-    .pull = NARF_GPIO_PIN_NOPULL,
-    .drive = NARF_GPIO_PIN_S0S1,
-    .sense = NARF_GPIO_PIN_NOSENSE,
-};
-
-const struct driver led_3 = {
-    .name = "LED_3",
-    .fp = &gpio_fp,
-    .dev = (void *)&narf_led_3,
-};
-
-const struct narf52_gpio narf_led_4 = {
-    .pin_number = 20,
-    .dir = NARF_GPIO_DIR_OUT,
-    .input = NARF_GPIO_PIN_INPUT_DISCONNECT,
-    .pull = NARF_GPIO_PIN_NOPULL,
-    .drive = NARF_GPIO_PIN_S0S1,
-    .sense = NARF_GPIO_PIN_NOSENSE,
-};
-
-const struct driver led_4 = {
-    .name = "LED_4",
-    .fp = &gpio_fp,
-    .dev = (void *)&narf_led_4,
-};
-
-// BUTTONs
-const struct narf52_gpio narf_button_1 = {
-    .pin_number = 13,
-    .dir = NARF_GPIO_DIR_IN,
-    .input = NARF_GPIO_PIN_INPUT_CONNECT,
-    .pull = NARF_GPIO_PIN_PULLUP,
-    .drive = NARF_GPIO_PIN_S0S1,
-    .sense = NARF_GPIO_PIN_NOSENSE,
-};
-
-const struct driver button_1 = {
-    .name = "BUTTON_1",
-    .fp = &gpio_fp,
-    .dev = (void *)&narf_button_1,
-};
-
-const struct narf52_gpio narf_button_2 = {
-    .pin_number = 14,
-    .dir = NARF_GPIO_DIR_IN,
-    .input = NARF_GPIO_PIN_INPUT_CONNECT,
-    .pull = NARF_GPIO_PIN_PULLUP,
-    .drive = NARF_GPIO_PIN_S0S1,
-    .sense = NARF_GPIO_PIN_NOSENSE,
-};
-
-const struct driver button_2 = {
-    .name = "BUTTON_2",
-    .fp = &gpio_fp,
-    .dev = (void *)&narf_button_2,
-};
-
-const struct narf52_gpio narf_button_3 = {
-    .pin_number = 15,
-    .dir = NARF_GPIO_DIR_IN,
-    .input = NARF_GPIO_PIN_INPUT_CONNECT,
-    .pull = NARF_GPIO_PIN_PULLUP,
-    .drive = NARF_GPIO_PIN_S0S1,
-    .sense = NARF_GPIO_PIN_NOSENSE,
-};
-
-const struct driver button_3 = {
-    .name = "BUTTON_3",
-    .fp = &gpio_fp,
-    .dev = (void *)&narf_button_3,
-};
-
-const struct narf52_gpio narf_button_4 = {
-    .pin_number = 16,
-    .dir = NARF_GPIO_DIR_IN,
-    .input = NARF_GPIO_PIN_INPUT_CONNECT,
-    .pull = NARF_GPIO_PIN_PULLUP,
-    .drive = NARF_GPIO_PIN_S0S1,
-    .sense = NARF_GPIO_PIN_NOSENSE,
-};
-
-const struct driver button_4 = {
-    .name = "BUTTON_4",
-    .fp = &gpio_fp,
-    .dev = (void *)&narf_button_4,
-};
-
-#endif

include/platform/narf52/narf52_gpio.h

@@ -1,48 +0,0 @@
-#ifndef __PLATFORM_NARF52_NARF52_GPIO_H__
-#define __PLATFORM_NARF52_NARF52_GPIO_H__
-
-#include <stdint.h>
-
-enum narf52_gpio_direction {
-    NARF_GPIO_DIR_IN = 0,
-    NARF_GPIO_DIR_OUT
-};
-
-enum narf52_gpio_pin_input {
-    NARF_GPIO_PIN_INPUT_CONNECT    = 0,   ///< Connect input buffer.
-    NARF_GPIO_PIN_INPUT_DISCONNECT        ///< Disconnect input buffer.
-};
-
-enum narf52_gpio_pin_pull {
-    NARF_GPIO_PIN_NOPULL   = 0,  ///<  Pin pull-up resistor disabled.
-    NARF_GPIO_PIN_PULLDOWN = 1,  ///<  Pin pull-down resistor enabled.
-    NARF_GPIO_PIN_PULLUP   = 3   ///<  Pin pull-up resistor enabled.
-};
-
-enum narf52_gpio_pin_drive {
-    NARF_GPIO_PIN_S0S1 = 0,  ///< !< Standard '0', standard '1'.
-    NARF_GPIO_PIN_H0S1 = 1,  ///< !< High-drive '0', standard '1'.
-    NARF_GPIO_PIN_S0H1 = 2,  ///< !< Standard '0', high-drive '1'.
-    NARF_GPIO_PIN_H0H1 = 3,  ///< !< High drive '0', high-drive '1'.
-    NARF_GPIO_PIN_D0S1 = 4,  ///< !< Disconnect '0' standard '1'.
-    NARF_GPIO_PIN_D0H1 = 5,  ///< !< Disconnect '0', high-drive '1'.
-    NARF_GPIO_PIN_S0D1 = 6,  ///< !< Standard '0', disconnect '1'.
-    NARF_GPIO_PIN_H0D1 = 7   ///< !< High-drive '0', disconnect '1'.
-};
-
-enum narf52_gpio_pin_sense {
-    NARF_GPIO_PIN_NOSENSE    = 0,    ///<  Pin sense level disabled.
-    NARF_GPIO_PIN_SENSE_LOW  = 1,    ///<  Pin sense low level.
-    NARF_GPIO_PIN_SENSE_HIGH = 2     ///<  Pin sense high level.
-};
-
-struct narf52_gpio {
-    uint32_t pin_number;
-    enum narf52_gpio_direction dir;
-    enum narf52_gpio_pin_input input;
-    enum narf52_gpio_pin_pull pull;
-    enum narf52_gpio_pin_drive drive;
-    enum narf52_gpio_pin_sense sense;
-};
-
-#endif

interfaces/HwTimerInterface.h

@@ -0,0 +1,19 @@
+#ifndef __INTERFACES_HWTIMERINTERFACE_H__
+#define __INTERFACES_HWTIMERINTERFACE_H__
+
+#include <cstdint>
+
+namespace pinetime::interfaces
+{
+
+class HwTimerInterface
+{
+public:
+    virtual void enable_timer() = 0;
+    virtual void disable_timer() = 0;
+    virtual uint64_t tick() = 0;
+};
+
+}
+
+#endif

interfaces/VirtualTimerInterface.h

@@ -0,0 +1,19 @@
+#ifndef __INTERFACES_VIRTUALTIMERINTERFACE_H__
+#define __INTERFACES_VIRTUALTIMERINTERFACE_H__
+
+#include <cstdint>
+
+namespace pinetime::interfaces
+{
+
+class VirtualTimerInterface
+{
+public:
+    virtual void timer_notification(uint64_t) = 0;
+    virtual void timer_enable() = 0;
+    virtual void timer_disable() = 0;
+};
+
+}
+
+#endif

interfaces/gpio_interface.h

@@ -0,0 +1,24 @@
+#ifndef __INTERFACES_GPIO_INTERFACE_H__
+#define __INTERFACES_GPIO_INTERFACE_H__
+
+#include <cstdint>
+
+namespace pinetime::interfaces {
+
+class GpioInterface
+{
+    public:
+        enum class direction {IN, OUT};
+
+        virtual void set_direction(direction, bool) = 0;
+        virtual uint32_t get() = 0;
+        virtual void set() = 0;
+        virtual void clear() = 0;
+        virtual void toggle() = 0;
+
+        virtual void handle() = 0;
+        virtual uint32_t pin_number() = 0;
+};
+
+}
+#endif

interfaces/interrupt_interface.h

@@ -0,0 +1,16 @@
+#ifndef __INTERFACES_INTERRUPT_INTERFACE_H__
+#define __INTERFACES_INTERRUPT_INTERFACE_H__
+
+namespace pinetime::interfaces {
+
+class InterruptHandlerInterface
+{
+    public:
+        virtual void handle() = 0;
+        virtual void enable() = 0;
+        virtual void disable() = 0;
+};
+
+}
+
+#endif

interfaces/spi_interface.h

@@ -0,0 +1,16 @@
+#ifndef __INTERFACES_SPI_INTERFACE_H__
+#define __INTERFACES_SPI_INTERFACE_H__
+
+#include <cstdint>
+
+namespace pinetime::interfaces {
+
+class SpiInterface
+{
+    public:
+        virtual void send(const uint8_t * buffer, uint32_t len) = 0;
+        virtual void recv(uint8_t * buffer, uint32_t len) = 0;
+};
+};
+
+#endif

src/Pool.h

@@ -0,0 +1,56 @@
+#ifndef __POOL_H__
+#define __POOL_H__
+
+#include <cstddef>
+#include <cstdint>
+
+#include "platform/cm4/InterruptLock.h"
+
+namespace pinetime
+{
+
+template <typename T, std::size_t sizeT>
+class Pool
+{
+    union Item
+    {
+        uint8_t item[sizeof(T)];
+        Item * next;
+    };
+    Item items[sizeT];
+    uint8_t map[sizeT];
+
+public:
+    Pool()
+    {
+        for(unsigned int i = 0; i < sizeT; i++) {
+            map[i] = 0;
+        }
+    }
+
+    void *alloc()
+    {
+        pinetime::platform::cm4::InterruptLock lock;
+        void * res = nullptr;
+        for(unsigned int i = 0; i < sizeT; i++) {
+            if(map[i] == 0) {
+                map[i] = 0xff;
+                res = static_cast<void *>(items + i);
+                break;
+            }
+        }
+        return res;
+    }
+
+    void free(T * ptr)
+    {
+        pinetime::platform::cm4::InterruptLock lock;
+        // ptr is not assumed to be aligned, since the integer based aritmetic provides always the correct index and omits the ramainder.
+        std::size_t index = (reinterpret_cast<std::uintptr_t>(ptr) - reinterpret_cast<std::uintptr_t>(items)) / sizeof(Item);
+        map[index] = 0;
+    }
+};
+
+}
+
+#endif

src/application/blinky/main.c

@@ -1,26 +0,0 @@
-#include <stdbool.h>
-#include <limits.h>
-#include "nrf_delay.h"
-#include "boards.h"
-#include "platform/narf52/narf52_dk.h"
- 
-#include "driver.h"
- 
-int main(void)
-{
-    drv_open(&led_1);
-    drv_open(&led_2);
-    drv_open(&led_3);
-    drv_open(&led_4);
-
-    while(true) {
-        for(unsigned int i = 0; i < UINT_MAX; i++) {
-            char x = 0x30 | (char)(1 & i);
-            drv_write(&led_1, &x, 1);
-            drv_write(&led_2, &x, 1);
-            drv_write(&led_3, &x, 1);
-            drv_write(&led_4, &x, 1);
-            nrf_delay_ms(500);
-        }
-    }
-}

src/application/blinky/main.cc

@@ -0,0 +1,56 @@
+#include <array>
+
+#include "virtual_timer/VirtualTimerDistributor.h"
+
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+#include "platform/cm4/SystemTick.h"
+
+#include "platform/nrf52/gpio.h"
+#include "platform/nrf52/gpiote.h"
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+
+#include "delay.h"
+
+using namespace pinetime::platform;
+using namespace pinetime::virtual_timer;
+
+// IRQs
+nrf52::InterruptGuardian nrf52::InterruptGuardian::instance;
+cm4::InterruptGuardian cm4::InterruptGuardian::instance;
+
+// GPIO events
+nrf52::Gpiote gpiote;
+
+// Timer
+cm4::SystemTick system_tick;
+VirtualTimerDistributor virtual_timer_distributor(system_tick.instance());
+pinetime::Delay delay;
+
+enum {
+    PIN_NUMBER_LED_1 = 17,
+    PIN_NUMBER_LED_2 = 18,
+    PIN_NUMBER_LED_3 = 19,
+    PIN_NUMBER_LED_4 = 20
+};
+
+// LEDs
+nrf52::Gpio led_1(PIN_NUMBER_LED_1);
+nrf52::Gpio led_2(PIN_NUMBER_LED_2);
+nrf52::Gpio led_3(PIN_NUMBER_LED_3);
+nrf52::Gpio led_4(PIN_NUMBER_LED_4);
+std::array<nrf52::Gpio *, 4> leds = {&led_1, &led_2, &led_3, &led_4};
+
+int main(void)
+{
+    cm4::InterruptGuardian::enable_interrupts();
+    while(true) {
+        for(auto it = leds.begin(); it != leds.end(); ++it) {
+            nrf52::Gpio * led = *it;
+            led->toggle();
+            delay.ms(200);
+        }
+    }
+    return 0;
+}

src/application/button/main.c

@@ -1,34 +0,0 @@
-#include <stdbool.h>
-#include <stdint.h>
-
-#include "board.h"
-#include "driver.h"
-
-int main(void)
-{
-    // bsp_board_init(BSP_INIT_LEDS);
-    drv_open(&led_1);
-    drv_open(&led_2);
-    drv_open(&led_3);
-    drv_open(&led_4);
-
-    drv_open(&button_1);
-    drv_open(&button_2);
-    drv_open(&button_3);
-    drv_open(&button_4);
-
-    while(true) {
-        char x;
-        drv_read(&button_1, &x, 1);
-        drv_write(&led_1, &x, 1);
-
-        drv_read(&button_2, &x, 1);
-        drv_write(&led_2, &x, 1);
-
-        drv_read(&button_3, &x, 1);
-        drv_write(&led_3, &x, 1);
-
-        drv_read(&button_4, &x, 1);
-        drv_write(&led_4, &x, 1);
-    }
-}

src/application/button/main.cc

@@ -0,0 +1,74 @@
+#include <array>
+
+#include "virtual_timer/VirtualTimerDistributor.h"
+
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+#include "platform/cm4/SystemTick.h"
+
+#include "platform/nrf52/gpio.h"
+#include "platform/nrf52/gpiote.h"
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+
+#include "gpio_interface.h"
+#include "delay.h"
+
+using namespace pinetime::platform;
+using namespace pinetime::virtual_timer;
+
+// IRQs
+nrf52::InterruptGuardian nrf52::InterruptGuardian::instance;
+cm4::InterruptGuardian cm4::InterruptGuardian::instance;
+
+// GPIO events
+nrf52::Gpiote gpiote;
+
+// Timer
+cm4::SystemTick system_tick;
+VirtualTimerDistributor virtual_timer_distributor(system_tick.instance());
+pinetime::Delay delay;
+
+
+enum {
+    PIN_NUMBER_BUTTON_1 = 13,
+    PIN_NUMBER_BUTTON_2 = 14,
+    PIN_NUMBER_BUTTON_3 = 15,
+    PIN_NUMBER_BUTTON_4 = 16,
+    PIN_NUMBER_LED_1 = 17,
+    PIN_NUMBER_LED_2 = 18,
+    PIN_NUMBER_LED_3 = 19,
+    PIN_NUMBER_LED_4 = 20
+};
+
+// LEDs
+nrf52::Gpio led_1(PIN_NUMBER_LED_1);
+nrf52::Gpio led_2(PIN_NUMBER_LED_2);
+nrf52::Gpio led_3(PIN_NUMBER_LED_3);
+nrf52::Gpio led_4(PIN_NUMBER_LED_4);
+std::array<nrf52::Gpio *, 4> leds = {&led_1, &led_2, &led_3, &led_4};
+
+// Buttons
+nrf52::Gpio button_1(PIN_NUMBER_BUTTON_1);
+nrf52::Gpio button_2(PIN_NUMBER_BUTTON_2);
+nrf52::Gpio button_3(PIN_NUMBER_BUTTON_3);
+nrf52::Gpio button_4(PIN_NUMBER_BUTTON_4);
+
+int main(void)
+{
+    button_1.set_direction(pinetime::interfaces::GpioInterface::direction::IN, true);
+    cm4::InterruptGuardian::enable_interrupts();
+    while(true) {
+        for(auto it = leds.begin(); it != leds.end(); ++it) {
+            uint32_t b1 = button_1.get();
+            if(b1) {
+                nrf52::Gpio * led = *it;
+                led->toggle();
+            }
+        }
+        __SEV();
+        __WFE();
+        __WFE();
+    }
+    return 0;
+}

src/application/spi/main.cc

@@ -0,0 +1,28 @@
+
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+
+#include "platform/nrf52/gpio.h"
+#include "platform/nrf52/spi.h"
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+
+using namespace pinetime::platform;
+
+uint8_t buf[] = "Test";
+
+nrf52::Gpio led_1(17);
+nrf52::Gpio lcd_chip_select(25);
+
+cm4::InterruptGuardian cm4::InterruptGuardian::instance;
+nrf52::InterruptGuardian nrf52::InterruptGuardian::instance;
+
+int main(void)
+{
+    cm4::InterruptGuardian::enable_interrupts();
+    nrf52::Spi spi_0(0, 2, 3, 4, lcd_chip_select);
+    while(1) {
+        spi_0.send(buf, sizeof(buf));
+        led_1.toggle();
+    }
+}

src/application/st7789_lcd/main.cc

@@ -0,0 +1,37 @@
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+
+#include "platform/nrf52/gpio.h"
+#include "platform/nrf52/gpiote.h"
+#include "platform/nrf52/spi.h"
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+#include "st7789.h"
+
+using namespace pinetime::platform;
+
+nrf52::Gpio led_1(17);
+
+nrf52::Gpio lcd_reset(26);
+nrf52::Gpio lcd_data_command(18);
+nrf52::Gpio lcd_backlight(23);
+nrf52::Gpio lcd_chip_select(25);
+nrf52::Spi lcd_spi(0, 2, 3, 4, lcd_chip_select);
+
+St7789 lcd(lcd_spi, lcd_reset, lcd_data_command, lcd_backlight);
+
+cm4::InterruptGuardian cm4::InterruptGuardian::instance;
+nrf52::InterruptGuardian nrf52::InterruptGuardian::instance;
+
+// GPIO events
+nrf52::Gpiote gpiote;
+
+int main(void)
+{
+    cm4::InterruptGuardian::enable_interrupts();
+    lcd.init();
+    lcd.clear(0);
+    while(true) {
+        led_1.toggle();
+    }
+}

src/delay.cc

@@ -0,0 +1,27 @@
+#include "delay.h"
+
+using namespace pinetime;
+using namespace pinetime::virtual_timer;
+
+Delay::Delay()
+    : VirtualTimer(0)
+    , pause(false)
+{
+}
+
+void Delay::ms(uint64_t time_ms)
+{
+    this->pause = true;
+    this->timer_set_period_ms(time_ms);
+    this->timer_enable();
+    while(this->pause) {
+        // FIXME: Low power
+        asm volatile("nop");
+    }
+    this->timer_disable();
+}
+
+void Delay::notification()
+{
+    this->pause = false;
+}

src/delay.h

@@ -0,0 +1,25 @@
+#ifndef __DELAY_H__
+#define __DELAY_H__
+
+#include "virtual_timer/VirtualTimer.h"
+
+namespace pinetime
+{
+
+class Delay
+    : public pinetime::virtual_timer::VirtualTimer
+{
+
+public:
+    Delay();
+    void ms(uint64_t);
+
+    void notification();
+
+private:
+    bool pause;
+};
+
+}
+
+#endif

src/driver.c

@@ -1,67 +0,0 @@
-#include <stdlib.h>
-#include <assert.h>
-
-#include "driver.h"
-
-int drv_open(const struct driver *drv)
-{
-    int res = -1;
-    assert(drv != NULL);
-
-    if(drv->fp->open) {
-        res = drv->fp->open(drv);
-    }
-
-    return res;
-}
-
-int drv_close(const struct driver *drv)
-{
-    int res = -1;
-    assert(drv != NULL);
-
-    if(drv->fp->close) {
-        res = drv->fp->close(drv);
-    }
-
-    return res;
-}
-
-int drv_read(const struct driver *drv, char *buffer, unsigned int length)
-{
-    int res = -1;
-    assert(drv != NULL);
-
-    if(drv->fp->read) {
-        res =  drv->fp->read(drv, buffer, length);
-    }
-
-    return res;
-}
-
-int drv_write(const struct driver *drv, const char *buffer, unsigned int length)
-{
-    int res = -1;
-    assert(drv != NULL);
-
-    if(drv->fp->write) {
-        res =  drv->fp->write(drv, buffer, length);
-    }
-
-    return res;
-}
-
-int drv_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, ...)
-{
-    int res = -1;
-    assert(drv != NULL);
-
-    if(drv->fp->ioctl) {
-        va_list args;
-        va_start(args, argc);
-        res = drv->fp->ioctl(drv, cmd, argc, args);
-        va_end(args);
-    }
-
-    return res;
-}

src/platform/cm4/InterruptGuardian.cc

@@ -0,0 +1,14 @@
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+
+using namespace pinetime::platform::cm4;
+
+InterruptGuardian::InterruptGuardian()
+{
+    disable_interrupts();
+}
+
+void InterruptGuardian::register_handler(Cm4IrqN irq_nr, InterruptHandler &handler)
+{
+    this->cm4_vector[irq_nr] = &handler;
+}

src/platform/cm4/InterruptGuardian.h

@@ -0,0 +1,59 @@
+#ifndef __PINETIME_PLATFORM_CM4_INTERRUPTGUARDIAN_H__
+#define __PINETIME_PLATFORM_CM4_INTERRUPTGUARDIAN_H__
+
+#include <array>
+
+extern "C" {
+    #include "nrf52.h"
+}
+
+namespace pinetime::platform::cm4 {
+
+class InterruptGuardian
+{
+public:
+    InterruptGuardian();
+
+    enum Cm4IrqN {
+        RESET_IRQ = 0,           //!< -15  Reset Vector, invoked on Power up and warm reset
+        NON_MASKABLE_INT_IRQ,    //!< -14  Non maskable Interrupt, cannot be stopped or preempted
+        HARD_FAULT_IRQ,          //!< -13  Hard Fault, all classes of Fault
+        MEMORY_MANAGEMENT_IRQ,   //!< -12  Memory Management, MPU mismatch, including Access Violation and No Match
+        BUS_FAULT_IRQ,           //!< -11  Bus Fault, Pre-Fetch-, Memory Access Fault, other address/memory related Fault
+        USAGE_FAULT_IRQ,         //!< -10  Usage Fault, i.e. Undef Instruction, Illegal State Transition
+        SV_CALL_IRQ,             //!< -5 System Service Call via SVC instruction
+        DEBUG_MONITOR_IRQ,       //!< -4 Debug Monitor
+        PEND_SV_IRQ,             //!< -2 Pendable request for system service
+        SYS_TICK_IRQ,            //!< -1 System Tick Timer
+    };
+
+private:
+    enum {
+        CM4_HANDLER_COUNT = SYS_TICK_IRQ + 1,
+    };
+
+public:
+    static inline void enable_interrupts() { asm volatile("cpsie i"); }
+    static inline void disable_interrupts() { asm volatile("cpsid i"); }
+    static inline bool suspend_interrupts()
+    {
+        uint32_t mask;
+        asm volatile("mrs %0, primask" : "=r" (mask));
+        asm volatile("cpsid i");
+        return(mask & 0x01);
+    }
+    static inline void resume_interrupts(bool status)
+    {
+        asm volatile ("msr primask, %0" : : "r" (status) : "memory");
+    }
+
+    void register_handler(Cm4IrqN irq_nr, InterruptHandler &);
+
+    static InterruptGuardian instance;
+
+    std::array<InterruptHandler *, CM4_HANDLER_COUNT> cm4_vector;
+};
+
+}
+
+#endif

src/platform/cm4/InterruptHandler.cc

@@ -0,0 +1,26 @@
+#include <assert.h>
+
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+
+using namespace pinetime::platform::cm4;
+
+InterruptHandler::InterruptHandler(uint32_t irq_nr)
+{
+    InterruptGuardian::instance.register_handler(static_cast<InterruptGuardian::Cm4IrqN>(irq_nr), *this);
+}
+
+void InterruptHandler::handle()
+{
+    assert(false);
+}
+
+void InterruptHandler::enable()
+{
+    assert(false);
+}
+
+void InterruptHandler::disable()
+{
+    assert(false);
+}

src/platform/cm4/InterruptHandler.h

@@ -0,0 +1,22 @@
+#ifndef __PINETIME_PLATFORM_CM4_INTERRUPTHANDLER_H__
+#define __PINETIME_PLATFORM_CM4_INTERRUPTHANDLER_H__
+
+#include <cstdint>
+
+#include "interrupt_interface.h"
+
+namespace pinetime::platform::cm4 {
+
+class InterruptHandler : public pinetime::interfaces::InterruptHandlerInterface
+{
+    public:
+        InterruptHandler(uint32_t);
+
+        void handle() override;
+        void enable() override;
+        void disable() override;
+};
+
+}
+
+#endif

src/platform/cm4/InterruptLock.cc

@@ -0,0 +1,15 @@
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+#include "platform/cm4/InterruptLock.h"
+
+using namespace pinetime::platform::cm4;
+
+InterruptLock::InterruptLock()
+{
+    this->state = InterruptGuardian::suspend_interrupts();
+}
+
+InterruptLock::~InterruptLock()
+{
+    InterruptGuardian::resume_interrupts(this->state);
+}

src/platform/cm4/InterruptLock.h

@@ -0,0 +1,18 @@
+#ifndef __PLATFORM_CM$_INTERRUPTLOCK_H__
+#define __PLATFORM_CM$_INTERRUPTLOCK_H__
+
+namespace pinetime::platform::cm4 {
+
+class InterruptLock
+{
+public:
+    InterruptLock();
+    ~InterruptLock();
+
+private:
+    bool state;
+};
+
+}
+
+#endif

src/platform/cm4/SystemTick.cc

@@ -0,0 +1,38 @@
+extern "C" {
+    #include "nrf52.h"
+}
+
+#include "virtual_timer/VirtualTimerDistributor.h"
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+#include "platform/cm4/SystemTick.h"
+
+using namespace pinetime::platform::cm4;
+using namespace pinetime::virtual_timer;
+
+SystemTick::SystemTick()
+    : InterruptHandler(InterruptGuardian::Cm4IrqN::SYS_TICK_IRQ)
+    , sys_tick(0)
+{
+}
+
+void SystemTick::handle()
+{
+    this->sys_tick++;
+    VirtualTimerDistributor::instance().notify(this->sys_tick);
+}
+
+void SystemTick::enable_timer()
+{
+    SysTick_Config(SystemCoreClock / 1000);
+}
+
+void SystemTick::disable_timer()
+{
+    SysTick->CTRL = 0;
+}
+
+uint64_t SystemTick::tick()
+{
+    return this->sys_tick;
+}

src/platform/cm4/SystemTick.h

@@ -0,0 +1,36 @@
+#ifndef __PLATFORM_CM4_SYSTEMTICK_H__
+#define __PLATFORM_CM4_SYSTEMTICK_H__
+
+#include "HwTimerInterface.h"
+#include "platform/cm4/InterruptHandler.h"
+
+namespace pinetime::platform::cm4
+{
+class SystemTick;
+}
+extern pinetime::platform::cm4::SystemTick system_tick;
+
+namespace pinetime::platform::cm4
+{
+class SystemTick
+    : public pinetime::platform::cm4::InterruptHandler
+    , public pinetime::interfaces::HwTimerInterface
+{
+    public:
+        SystemTick();
+
+        static inline SystemTick & instance() { return system_tick; }
+
+        void enable_timer() override;
+        void disable_timer() override;
+        uint64_t tick() override;
+
+        void handle() override;
+
+    private:
+        uint64_t sys_tick;
+};
+
+}
+
+#endif

src/platform/cm4/cmsis/dsp/license.txt

@@ -0,0 +1,28 @@
+All pre-build libraries contained in the folders "ARM" and "GCC"
+are guided by the following license:
+
+Copyright (C) 2009-2014 ARM Limited. 
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+ - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+ - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+ - Neither the name of ARM nor the names of its contributors may be used 
+   to endorse or promote products derived from this software without 
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.

src/platform/cm4/cmsis/include/arm_common_tables.h

@@ -0,0 +1,136 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2014 ARM Limited. All rights reserved.
+*
+* $Date:        19. October 2015
+* $Revision: 	V.1.4.5 a
+*
+* Project: 	    CMSIS DSP Library
+* Title:	    arm_common_tables.h
+*
+* Description:	This file has extern declaration for common tables like Bitreverse, reciprocal etc which are used across different functions
+*
+* Target Processor: Cortex-M4/Cortex-M3
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*   - Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   - Redistributions in binary form must reproduce the above copyright
+*     notice, this list of conditions and the following disclaimer in
+*     the documentation and/or other materials provided with the
+*     distribution.
+*   - Neither the name of ARM LIMITED nor the names of its contributors
+*     may be used to endorse or promote products derived from this
+*     software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+* -------------------------------------------------------------------- */
+
+#ifndef _ARM_COMMON_TABLES_H
+#define _ARM_COMMON_TABLES_H
+
+#include "arm_math.h"
+
+extern const uint16_t armBitRevTable[1024];
+extern const q15_t armRecipTableQ15[64];
+extern const q31_t armRecipTableQ31[64];
+/* extern const q31_t realCoefAQ31[1024]; */
+/* extern const q31_t realCoefBQ31[1024]; */
+extern const float32_t twiddleCoef_16[32];
+extern const float32_t twiddleCoef_32[64];
+extern const float32_t twiddleCoef_64[128];
+extern const float32_t twiddleCoef_128[256];
+extern const float32_t twiddleCoef_256[512];
+extern const float32_t twiddleCoef_512[1024];
+extern const float32_t twiddleCoef_1024[2048];
+extern const float32_t twiddleCoef_2048[4096];
+extern const float32_t twiddleCoef_4096[8192];
+#define twiddleCoef twiddleCoef_4096
+extern const q31_t twiddleCoef_16_q31[24];
+extern const q31_t twiddleCoef_32_q31[48];
+extern const q31_t twiddleCoef_64_q31[96];
+extern const q31_t twiddleCoef_128_q31[192];
+extern const q31_t twiddleCoef_256_q31[384];
+extern const q31_t twiddleCoef_512_q31[768];
+extern const q31_t twiddleCoef_1024_q31[1536];
+extern const q31_t twiddleCoef_2048_q31[3072];
+extern const q31_t twiddleCoef_4096_q31[6144];
+extern const q15_t twiddleCoef_16_q15[24];
+extern const q15_t twiddleCoef_32_q15[48];
+extern const q15_t twiddleCoef_64_q15[96];
+extern const q15_t twiddleCoef_128_q15[192];
+extern const q15_t twiddleCoef_256_q15[384];
+extern const q15_t twiddleCoef_512_q15[768];
+extern const q15_t twiddleCoef_1024_q15[1536];
+extern const q15_t twiddleCoef_2048_q15[3072];
+extern const q15_t twiddleCoef_4096_q15[6144];
+extern const float32_t twiddleCoef_rfft_32[32];
+extern const float32_t twiddleCoef_rfft_64[64];
+extern const float32_t twiddleCoef_rfft_128[128];
+extern const float32_t twiddleCoef_rfft_256[256];
+extern const float32_t twiddleCoef_rfft_512[512];
+extern const float32_t twiddleCoef_rfft_1024[1024];
+extern const float32_t twiddleCoef_rfft_2048[2048];
+extern const float32_t twiddleCoef_rfft_4096[4096];
+
+
+/* floating-point bit reversal tables */
+#define ARMBITREVINDEXTABLE__16_TABLE_LENGTH ((uint16_t)20  )
+#define ARMBITREVINDEXTABLE__32_TABLE_LENGTH ((uint16_t)48  )
+#define ARMBITREVINDEXTABLE__64_TABLE_LENGTH ((uint16_t)56  )
+#define ARMBITREVINDEXTABLE_128_TABLE_LENGTH ((uint16_t)208 )
+#define ARMBITREVINDEXTABLE_256_TABLE_LENGTH ((uint16_t)440 )
+#define ARMBITREVINDEXTABLE_512_TABLE_LENGTH ((uint16_t)448 )
+#define ARMBITREVINDEXTABLE1024_TABLE_LENGTH ((uint16_t)1800)
+#define ARMBITREVINDEXTABLE2048_TABLE_LENGTH ((uint16_t)3808)
+#define ARMBITREVINDEXTABLE4096_TABLE_LENGTH ((uint16_t)4032)
+
+extern const uint16_t armBitRevIndexTable16[ARMBITREVINDEXTABLE__16_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable32[ARMBITREVINDEXTABLE__32_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable64[ARMBITREVINDEXTABLE__64_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable128[ARMBITREVINDEXTABLE_128_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable256[ARMBITREVINDEXTABLE_256_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable512[ARMBITREVINDEXTABLE_512_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable1024[ARMBITREVINDEXTABLE1024_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable2048[ARMBITREVINDEXTABLE2048_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable4096[ARMBITREVINDEXTABLE4096_TABLE_LENGTH];
+
+/* fixed-point bit reversal tables */
+#define ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH ((uint16_t)12  )
+#define ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH ((uint16_t)24  )
+#define ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH ((uint16_t)56  )
+#define ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH ((uint16_t)112 )
+#define ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH ((uint16_t)240 )
+#define ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH ((uint16_t)480 )
+#define ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH ((uint16_t)992 )
+#define ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH ((uint16_t)1984)
+#define ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH ((uint16_t)4032)
+
+extern const uint16_t armBitRevIndexTable_fixed_16[ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_32[ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_64[ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_128[ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_256[ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_512[ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_1024[ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_2048[ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_4096[ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH];
+
+/* Tables for Fast Math Sine and Cosine */
+extern const float32_t sinTable_f32[FAST_MATH_TABLE_SIZE + 1];
+extern const q31_t sinTable_q31[FAST_MATH_TABLE_SIZE + 1];
+extern const q15_t sinTable_q15[FAST_MATH_TABLE_SIZE + 1];
+
+#endif /*  ARM_COMMON_TABLES_H */

src/platform/cm4/cmsis/include/arm_const_structs.h

@@ -0,0 +1,79 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2014 ARM Limited. All rights reserved.
+*
+* $Date:        19. March 2015
+* $Revision: 	V.1.4.5
+*
+* Project: 	    CMSIS DSP Library
+* Title:	    arm_const_structs.h
+*
+* Description:	This file has constant structs that are initialized for
+*              user convenience.  For example, some can be given as
+*              arguments to the arm_cfft_f32() function.
+*
+* Target Processor: Cortex-M4/Cortex-M3
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*   - Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   - Redistributions in binary form must reproduce the above copyright
+*     notice, this list of conditions and the following disclaimer in
+*     the documentation and/or other materials provided with the
+*     distribution.
+*   - Neither the name of ARM LIMITED nor the names of its contributors
+*     may be used to endorse or promote products derived from this
+*     software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+* -------------------------------------------------------------------- */
+
+#ifndef _ARM_CONST_STRUCTS_H
+#define _ARM_CONST_STRUCTS_H
+
+#include "arm_math.h"
+#include "arm_common_tables.h"
+
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len16;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len32;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len64;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len128;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len256;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len512;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len1024;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len2048;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len4096;
+
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len16;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len32;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len64;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len128;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len256;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len512;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len1024;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len2048;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len4096;
+
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len16;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len32;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len64;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len128;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len256;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len512;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len1024;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len2048;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len4096;
+
+#endif

src/platform/cm4/cmsis/include/cmsis_armcc.h

@@ -0,0 +1,734 @@
+/**************************************************************************//**
+ * @file     cmsis_armcc.h
+ * @brief    CMSIS Cortex-M Core Function/Instruction Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#ifndef __CMSIS_ARMCC_H
+#define __CMSIS_ARMCC_H
+
+
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION < 400677)
+  #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
+#endif
+
+/* ###########################  Core Function Access  ########################### */
+/** \ingroup  CMSIS_Core_FunctionInterface
+    \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
+  @{
+ */
+
+/* intrinsic void __enable_irq();     */
+/* intrinsic void __disable_irq();    */
+
+/**
+  \brief   Get Control Register
+  \details Returns the content of the Control Register.
+  \return               Control Register value
+ */
+__STATIC_INLINE uint32_t __get_CONTROL(void)
+{
+  register uint32_t __regControl         __ASM("control");
+  return(__regControl);
+}
+
+
+/**
+  \brief   Set Control Register
+  \details Writes the given value to the Control Register.
+  \param [in]    control  Control Register value to set
+ */
+__STATIC_INLINE void __set_CONTROL(uint32_t control)
+{
+  register uint32_t __regControl         __ASM("control");
+  __regControl = control;
+}
+
+
+/**
+  \brief   Get IPSR Register
+  \details Returns the content of the IPSR Register.
+  \return               IPSR Register value
+ */
+__STATIC_INLINE uint32_t __get_IPSR(void)
+{
+  register uint32_t __regIPSR          __ASM("ipsr");
+  return(__regIPSR);
+}
+
+
+/**
+  \brief   Get APSR Register
+  \details Returns the content of the APSR Register.
+  \return               APSR Register value
+ */
+__STATIC_INLINE uint32_t __get_APSR(void)
+{
+  register uint32_t __regAPSR          __ASM("apsr");
+  return(__regAPSR);
+}
+
+
+/**
+  \brief   Get xPSR Register
+  \details Returns the content of the xPSR Register.
+  \return               xPSR Register value
+ */
+__STATIC_INLINE uint32_t __get_xPSR(void)
+{
+  register uint32_t __regXPSR          __ASM("xpsr");
+  return(__regXPSR);
+}
+
+
+/**
+  \brief   Get Process Stack Pointer
+  \details Returns the current value of the Process Stack Pointer (PSP).
+  \return               PSP Register value
+ */
+__STATIC_INLINE uint32_t __get_PSP(void)
+{
+  register uint32_t __regProcessStackPointer  __ASM("psp");
+  return(__regProcessStackPointer);
+}
+
+
+/**
+  \brief   Set Process Stack Pointer
+  \details Assigns the given value to the Process Stack Pointer (PSP).
+  \param [in]    topOfProcStack  Process Stack Pointer value to set
+ */
+__STATIC_INLINE void __set_PSP(uint32_t topOfProcStack)
+{
+  register uint32_t __regProcessStackPointer  __ASM("psp");
+  __regProcessStackPointer = topOfProcStack;
+}
+
+
+/**
+  \brief   Get Main Stack Pointer
+  \details Returns the current value of the Main Stack Pointer (MSP).
+  \return               MSP Register value
+ */
+__STATIC_INLINE uint32_t __get_MSP(void)
+{
+  register uint32_t __regMainStackPointer     __ASM("msp");
+  return(__regMainStackPointer);
+}
+
+
+/**
+  \brief   Set Main Stack Pointer
+  \details Assigns the given value to the Main Stack Pointer (MSP).
+  \param [in]    topOfMainStack  Main Stack Pointer value to set
+ */
+__STATIC_INLINE void __set_MSP(uint32_t topOfMainStack)
+{
+  register uint32_t __regMainStackPointer     __ASM("msp");
+  __regMainStackPointer = topOfMainStack;
+}
+
+
+/**
+  \brief   Get Priority Mask
+  \details Returns the current state of the priority mask bit from the Priority Mask Register.
+  \return               Priority Mask value
+ */
+__STATIC_INLINE uint32_t __get_PRIMASK(void)
+{
+  register uint32_t __regPriMask         __ASM("primask");
+  return(__regPriMask);
+}
+
+
+/**
+  \brief   Set Priority Mask
+  \details Assigns the given value to the Priority Mask Register.
+  \param [in]    priMask  Priority Mask
+ */
+__STATIC_INLINE void __set_PRIMASK(uint32_t priMask)
+{
+  register uint32_t __regPriMask         __ASM("primask");
+  __regPriMask = (priMask);
+}
+
+
+#if       (__CORTEX_M >= 0x03U) || (__CORTEX_SC >= 300U)
+
+/**
+  \brief   Enable FIQ
+  \details Enables FIQ interrupts by clearing the F-bit in the CPSR.
+           Can only be executed in Privileged modes.
+ */
+#define __enable_fault_irq                __enable_fiq
+
+
+/**
+  \brief   Disable FIQ
+  \details Disables FIQ interrupts by setting the F-bit in the CPSR.
+           Can only be executed in Privileged modes.
+ */
+#define __disable_fault_irq               __disable_fiq
+
+
+/**
+  \brief   Get Base Priority
+  \details Returns the current value of the Base Priority register.
+  \return               Base Priority register value
+ */
+__STATIC_INLINE uint32_t  __get_BASEPRI(void)
+{
+  register uint32_t __regBasePri         __ASM("basepri");
+  return(__regBasePri);
+}
+
+
+/**
+  \brief   Set Base Priority
+  \details Assigns the given value to the Base Priority register.
+  \param [in]    basePri  Base Priority value to set
+ */
+__STATIC_INLINE void __set_BASEPRI(uint32_t basePri)
+{
+  register uint32_t __regBasePri         __ASM("basepri");
+  __regBasePri = (basePri & 0xFFU);
+}
+
+
+/**
+  \brief   Set Base Priority with condition
+  \details Assigns the given value to the Base Priority register only if BASEPRI masking is disabled,
+           or the new value increases the BASEPRI priority level.
+  \param [in]    basePri  Base Priority value to set
+ */
+__STATIC_INLINE void __set_BASEPRI_MAX(uint32_t basePri)
+{
+  register uint32_t __regBasePriMax      __ASM("basepri_max");
+  __regBasePriMax = (basePri & 0xFFU);
+}
+
+
+/**
+  \brief   Get Fault Mask
+  \details Returns the current value of the Fault Mask register.
+  \return               Fault Mask register value
+ */
+__STATIC_INLINE uint32_t __get_FAULTMASK(void)
+{
+  register uint32_t __regFaultMask       __ASM("faultmask");
+  return(__regFaultMask);
+}
+
+
+/**
+  \brief   Set Fault Mask
+  \details Assigns the given value to the Fault Mask register.
+  \param [in]    faultMask  Fault Mask value to set
+ */
+__STATIC_INLINE void __set_FAULTMASK(uint32_t faultMask)
+{
+  register uint32_t __regFaultMask       __ASM("faultmask");
+  __regFaultMask = (faultMask & (uint32_t)1);
+}
+
+#endif /* (__CORTEX_M >= 0x03U) || (__CORTEX_SC >= 300U) */
+
+
+#if       (__CORTEX_M == 0x04U) || (__CORTEX_M == 0x07U)
+
+/**
+  \brief   Get FPSCR
+  \details Returns the current value of the Floating Point Status/Control register.
+  \return               Floating Point Status/Control register value
+ */
+__STATIC_INLINE uint32_t __get_FPSCR(void)
+{
+#if (__FPU_PRESENT == 1U) && (__FPU_USED == 1U)
+  register uint32_t __regfpscr         __ASM("fpscr");
+  return(__regfpscr);
+#else
+   return(0U);
+#endif
+}
+
+
+/**
+  \brief   Set FPSCR
+  \details Assigns the given value to the Floating Point Status/Control register.
+  \param [in]    fpscr  Floating Point Status/Control value to set
+ */
+__STATIC_INLINE void __set_FPSCR(uint32_t fpscr)
+{
+#if (__FPU_PRESENT == 1U) && (__FPU_USED == 1U)
+  register uint32_t __regfpscr         __ASM("fpscr");
+  __regfpscr = (fpscr);
+#endif
+}
+
+#endif /* (__CORTEX_M == 0x04U) || (__CORTEX_M == 0x07U) */
+
+
+
+/*@} end of CMSIS_Core_RegAccFunctions */
+
+
+/* ##########################  Core Instruction Access  ######################### */
+/** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
+  Access to dedicated instructions
+  @{
+*/
+
+/**
+  \brief   No Operation
+  \details No Operation does nothing. This instruction can be used for code alignment purposes.
+ */
+#define __NOP                             __nop
+
+
+/**
+  \brief   Wait For Interrupt
+  \details Wait For Interrupt is a hint instruction that suspends execution until one of a number of events occurs.
+ */
+#define __WFI                             __wfi
+
+
+/**
+  \brief   Wait For Event
+  \details Wait For Event is a hint instruction that permits the processor to enter
+           a low-power state until one of a number of events occurs.
+ */
+#define __WFE                             __wfe
+
+
+/**
+  \brief   Send Event
+  \details Send Event is a hint instruction. It causes an event to be signaled to the CPU.
+ */
+#define __SEV                             __sev
+
+
+/**
+  \brief   Instruction Synchronization Barrier
+  \details Instruction Synchronization Barrier flushes the pipeline in the processor,
+           so that all instructions following the ISB are fetched from cache or memory,
+           after the instruction has been completed.
+ */
+#define __ISB() do {\
+                   __schedule_barrier();\
+                   __isb(0xF);\
+                   __schedule_barrier();\
+                } while (0U)
+
+/**
+  \brief   Data Synchronization Barrier
+  \details Acts as a special kind of Data Memory Barrier.
+           It completes when all explicit memory accesses before this instruction complete.
+ */
+#define __DSB() do {\
+                   __schedule_barrier();\
+                   __dsb(0xF);\
+                   __schedule_barrier();\
+                } while (0U)
+
+/**
+  \brief   Data Memory Barrier
+  \details Ensures the apparent order of the explicit memory operations before
+           and after the instruction, without ensuring their completion.
+ */
+#define __DMB() do {\
+                   __schedule_barrier();\
+                   __dmb(0xF);\
+                   __schedule_barrier();\
+                } while (0U)
+
+/**
+  \brief   Reverse byte order (32 bit)
+  \details Reverses the byte order in integer value.
+  \param [in]    value  Value to reverse
+  \return               Reversed value
+ */
+#define __REV                             __rev
+
+
+/**
+  \brief   Reverse byte order (16 bit)
+  \details Reverses the byte order in two unsigned short values.
+  \param [in]    value  Value to reverse
+  \return               Reversed value
+ */
+#ifndef __NO_EMBEDDED_ASM
+__attribute__((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
+{
+  rev16 r0, r0
+  bx lr
+}
+#endif
+
+/**
+  \brief   Reverse byte order in signed short value
+  \details Reverses the byte order in a signed short value with sign extension to integer.
+  \param [in]    value  Value to reverse
+  \return               Reversed value
+ */
+#ifndef __NO_EMBEDDED_ASM
+__attribute__((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
+{
+  revsh r0, r0
+  bx lr
+}
+#endif
+
+
+/**
+  \brief   Rotate Right in unsigned value (32 bit)
+  \details Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
+  \param [in]    value  Value to rotate
+  \param [in]    value  Number of Bits to rotate
+  \return               Rotated value
+ */
+#define __ROR                             __ror
+
+
+/**
+  \brief   Breakpoint
+  \details Causes the processor to enter Debug state.
+           Debug tools can use this to investigate system state when the instruction at a particular address is reached.
+  \param [in]    value  is ignored by the processor.
+                 If required, a debugger can use it to store additional information about the breakpoint.
+ */
+#define __BKPT(value)                       __breakpoint(value)
+
+
+/**
+  \brief   Reverse bit order of value
+  \details Reverses the bit order of the given value.
+  \param [in]    value  Value to reverse
+  \return               Reversed value
+ */
+#if       (__CORTEX_M >= 0x03U) || (__CORTEX_SC >= 300U)
+  #define __RBIT                          __rbit
+#else
+__attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
+{
+  uint32_t result;
+  int32_t s = 4 /*sizeof(v)*/ * 8 - 1; /* extra shift needed at end */
+
+  result = value;                      /* r will be reversed bits of v; first get LSB of v */
+  for (value >>= 1U; value; value >>= 1U)
+  {
+    result <<= 1U;
+    result |= value & 1U;
+    s--;
+  }
+  result <<= s;                        /* shift when v's highest bits are zero */
+  return(result);
+}
+#endif
+
+
+/**
+  \brief   Count leading zeros
+  \details Counts the number of leading zeros of a data value.
+  \param [in]  value  Value to count the leading zeros
+  \return             number of leading zeros in value
+ */
+#define __CLZ                             __clz
+
+
+#if       (__CORTEX_M >= 0x03U) || (__CORTEX_SC >= 300U)
+
+/**
+  \brief   LDR Exclusive (8 bit)
+  \details Executes a exclusive LDR instruction for 8 bit value.
+  \param [in]    ptr  Pointer to data
+  \return             value of type uint8_t at (*ptr)
+ */
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION < 5060020)
+  #define __LDREXB(ptr)                                                        ((uint8_t ) __ldrex(ptr))
+#else
+  #define __LDREXB(ptr)          _Pragma("push") _Pragma("diag_suppress 3731") ((uint8_t ) __ldrex(ptr))  _Pragma("pop")
+#endif
+
+
+/**
+  \brief   LDR Exclusive (16 bit)
+  \details Executes a exclusive LDR instruction for 16 bit values.
+  \param [in]    ptr  Pointer to data
+  \return        value of type uint16_t at (*ptr)
+ */
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION < 5060020)
+  #define __LDREXH(ptr)                                                        ((uint16_t) __ldrex(ptr))
+#else
+  #define __LDREXH(ptr)          _Pragma("push") _Pragma("diag_suppress 3731") ((uint16_t) __ldrex(ptr))  _Pragma("pop")
+#endif
+
+
+/**
+  \brief   LDR Exclusive (32 bit)
+  \details Executes a exclusive LDR instruction for 32 bit values.
+  \param [in]    ptr  Pointer to data
+  \return        value of type uint32_t at (*ptr)
+ */
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION < 5060020)
+  #define __LDREXW(ptr)                                                        ((uint32_t ) __ldrex(ptr))
+#else
+  #define __LDREXW(ptr)          _Pragma("push") _Pragma("diag_suppress 3731") ((uint32_t ) __ldrex(ptr))  _Pragma("pop")
+#endif
+
+
+/**
+  \brief   STR Exclusive (8 bit)
+  \details Executes a exclusive STR instruction for 8 bit values.
+  \param [in]  value  Value to store
+  \param [in]    ptr  Pointer to location
+  \return          0  Function succeeded
+  \return          1  Function failed
+ */
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION < 5060020)
+  #define __STREXB(value, ptr)                                                 __strex(value, ptr)
+#else
+  #define __STREXB(value, ptr)   _Pragma("push") _Pragma("diag_suppress 3731") __strex(value, ptr)        _Pragma("pop")
+#endif
+
+
+/**
+  \brief   STR Exclusive (16 bit)
+  \details Executes a exclusive STR instruction for 16 bit values.
+  \param [in]  value  Value to store
+  \param [in]    ptr  Pointer to location
+  \return          0  Function succeeded
+  \return          1  Function failed
+ */
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION < 5060020)
+  #define __STREXH(value, ptr)                                                 __strex(value, ptr)
+#else
+  #define __STREXH(value, ptr)   _Pragma("push") _Pragma("diag_suppress 3731") __strex(value, ptr)        _Pragma("pop")
+#endif
+
+
+/**
+  \brief   STR Exclusive (32 bit)
+  \details Executes a exclusive STR instruction for 32 bit values.
+  \param [in]  value  Value to store
+  \param [in]    ptr  Pointer to location
+  \return          0  Function succeeded
+  \return          1  Function failed
+ */
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION < 5060020)
+  #define __STREXW(value, ptr)                                                 __strex(value, ptr)
+#else
+  #define __STREXW(value, ptr)   _Pragma("push") _Pragma("diag_suppress 3731") __strex(value, ptr)        _Pragma("pop")
+#endif
+
+
+/**
+  \brief   Remove the exclusive lock
+  \details Removes the exclusive lock which is created by LDREX.
+ */
+#define __CLREX                           __clrex
+
+
+/**
+  \brief   Signed Saturate
+  \details Saturates a signed value.
+  \param [in]  value  Value to be saturated
+  \param [in]    sat  Bit position to saturate to (1..32)
+  \return             Saturated value
+ */
+#define __SSAT                            __ssat
+
+
+/**
+  \brief   Unsigned Saturate
+  \details Saturates an unsigned value.
+  \param [in]  value  Value to be saturated
+  \param [in]    sat  Bit position to saturate to (0..31)
+  \return             Saturated value
+ */
+#define __USAT                            __usat
+
+
+/**
+  \brief   Rotate Right with Extend (32 bit)
+  \details Moves each bit of a bitstring right by one bit.
+           The carry input is shifted in at the left end of the bitstring.
+  \param [in]    value  Value to rotate
+  \return               Rotated value
+ */
+#ifndef __NO_EMBEDDED_ASM
+__attribute__((section(".rrx_text"))) __STATIC_INLINE __ASM uint32_t __RRX(uint32_t value)
+{
+  rrx r0, r0
+  bx lr
+}
+#endif
+
+
+/**
+  \brief   LDRT Unprivileged (8 bit)
+  \details Executes a Unprivileged LDRT instruction for 8 bit value.
+  \param [in]    ptr  Pointer to data
+  \return             value of type uint8_t at (*ptr)
+ */
+#define __LDRBT(ptr)                      ((uint8_t )  __ldrt(ptr))
+
+
+/**
+  \brief   LDRT Unprivileged (16 bit)
+  \details Executes a Unprivileged LDRT instruction for 16 bit values.
+  \param [in]    ptr  Pointer to data
+  \return        value of type uint16_t at (*ptr)
+ */
+#define __LDRHT(ptr)                      ((uint16_t)  __ldrt(ptr))
+
+
+/**
+  \brief   LDRT Unprivileged (32 bit)
+  \details Executes a Unprivileged LDRT instruction for 32 bit values.
+  \param [in]    ptr  Pointer to data
+  \return        value of type uint32_t at (*ptr)
+ */
+#define __LDRT(ptr)                       ((uint32_t ) __ldrt(ptr))
+
+
+/**
+  \brief   STRT Unprivileged (8 bit)
+  \details Executes a Unprivileged STRT instruction for 8 bit values.
+  \param [in]  value  Value to store
+  \param [in]    ptr  Pointer to location
+ */
+#define __STRBT(value, ptr)               __strt(value, ptr)
+
+
+/**
+  \brief   STRT Unprivileged (16 bit)
+  \details Executes a Unprivileged STRT instruction for 16 bit values.
+  \param [in]  value  Value to store
+  \param [in]    ptr  Pointer to location
+ */
+#define __STRHT(value, ptr)               __strt(value, ptr)
+
+
+/**
+  \brief   STRT Unprivileged (32 bit)
+  \details Executes a Unprivileged STRT instruction for 32 bit values.
+  \param [in]  value  Value to store
+  \param [in]    ptr  Pointer to location
+ */
+#define __STRT(value, ptr)                __strt(value, ptr)
+
+#endif /* (__CORTEX_M >= 0x03U) || (__CORTEX_SC >= 300U) */
+
+/*@}*/ /* end of group CMSIS_Core_InstructionInterface */
+
+
+/* ###################  Compiler specific Intrinsics  ########################### */
+/** \defgroup CMSIS_SIMD_intrinsics CMSIS SIMD Intrinsics
+  Access to dedicated SIMD instructions
+  @{
+*/
+
+#if (__CORTEX_M >= 0x04U)  /* only for Cortex-M4 and above */
+
+#define __SADD8                           __sadd8
+#define __QADD8                           __qadd8
+#define __SHADD8                          __shadd8
+#define __UADD8                           __uadd8
+#define __UQADD8                          __uqadd8
+#define __UHADD8                          __uhadd8
+#define __SSUB8                           __ssub8
+#define __QSUB8                           __qsub8
+#define __SHSUB8                          __shsub8
+#define __USUB8                           __usub8
+#define __UQSUB8                          __uqsub8
+#define __UHSUB8                          __uhsub8
+#define __SADD16                          __sadd16
+#define __QADD16                          __qadd16
+#define __SHADD16                         __shadd16
+#define __UADD16                          __uadd16
+#define __UQADD16                         __uqadd16
+#define __UHADD16                         __uhadd16
+#define __SSUB16                          __ssub16
+#define __QSUB16                          __qsub16
+#define __SHSUB16                         __shsub16
+#define __USUB16                          __usub16
+#define __UQSUB16                         __uqsub16
+#define __UHSUB16                         __uhsub16
+#define __SASX                            __sasx
+#define __QASX                            __qasx
+#define __SHASX                           __shasx
+#define __UASX                            __uasx
+#define __UQASX                           __uqasx
+#define __UHASX                           __uhasx
+#define __SSAX                            __ssax
+#define __QSAX                            __qsax
+#define __SHSAX                           __shsax
+#define __USAX                            __usax
+#define __UQSAX                           __uqsax
+#define __UHSAX                           __uhsax
+#define __USAD8                           __usad8
+#define __USADA8                          __usada8
+#define __SSAT16                          __ssat16
+#define __USAT16                          __usat16
+#define __UXTB16                          __uxtb16
+#define __UXTAB16                         __uxtab16
+#define __SXTB16                          __sxtb16
+#define __SXTAB16                         __sxtab16
+#define __SMUAD                           __smuad
+#define __SMUADX                          __smuadx
+#define __SMLAD                           __smlad
+#define __SMLADX                          __smladx
+#define __SMLALD                          __smlald
+#define __SMLALDX                         __smlaldx
+#define __SMUSD                           __smusd
+#define __SMUSDX                          __smusdx
+#define __SMLSD                           __smlsd
+#define __SMLSDX                          __smlsdx
+#define __SMLSLD                          __smlsld
+#define __SMLSLDX                         __smlsldx
+#define __SEL                             __sel
+#define __QADD                            __qadd
+#define __QSUB                            __qsub
+
+#define __PKHBT(ARG1,ARG2,ARG3)          ( ((((uint32_t)(ARG1))          ) & 0x0000FFFFUL) |  \
+                                           ((((uint32_t)(ARG2)) << (ARG3)) & 0xFFFF0000UL)  )
+
+#define __PKHTB(ARG1,ARG2,ARG3)          ( ((((uint32_t)(ARG1))          ) & 0xFFFF0000UL) |  \
+                                           ((((uint32_t)(ARG2)) >> (ARG3)) & 0x0000FFFFUL)  )
+
+#define __SMMLA(ARG1,ARG2,ARG3)          ( (int32_t)((((int64_t)(ARG1) * (ARG2)) + \
+                                                      ((int64_t)(ARG3) << 32U)     ) >> 32U))
+
+#endif /* (__CORTEX_M >= 0x04) */
+/*@} end of group CMSIS_SIMD_intrinsics */
+
+
+#endif /* __CMSIS_ARMCC_H */

src/platform/cm4/cmsis/include/core_cm0.h

@@ -0,0 +1,798 @@
+/**************************************************************************//**
+ * @file     core_cm0.h
+ * @brief    CMSIS Cortex-M0 Core Peripheral Access Layer Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CM0_H_GENERIC
+#define __CORE_CM0_H_GENERIC
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/**
+  \page CMSIS_MISRA_Exceptions  MISRA-C:2004 Compliance Exceptions
+  CMSIS violates the following MISRA-C:2004 rules:
+
+   \li Required Rule 8.5, object/function definition in header file.<br>
+     Function definitions in header files are used to allow 'inlining'.
+
+   \li Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br>
+     Unions are used for effective representation of core registers.
+
+   \li Advisory Rule 19.7, Function-like macro defined.<br>
+     Function-like macros are used to allow more efficient code.
+ */
+
+
+/*******************************************************************************
+ *                 CMSIS definitions
+ ******************************************************************************/
+/**
+  \ingroup Cortex_M0
+  @{
+ */
+
+/*  CMSIS CM0 definitions */
+#define __CM0_CMSIS_VERSION_MAIN  (0x04U)                                      /*!< [31:16] CMSIS HAL main version */
+#define __CM0_CMSIS_VERSION_SUB   (0x1EU)                                      /*!< [15:0]  CMSIS HAL sub version */
+#define __CM0_CMSIS_VERSION       ((__CM0_CMSIS_VERSION_MAIN << 16U) | \
+                                    __CM0_CMSIS_VERSION_SUB           )        /*!< CMSIS HAL version number */
+
+#define __CORTEX_M                (0x00U)                                      /*!< Cortex-M Core */
+
+
+#if   defined ( __CC_ARM )
+  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler */
+  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler */
+  #define __STATIC_INLINE  static __inline
+
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler */
+  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler */
+  #define __STATIC_INLINE  static __inline
+
+#elif defined ( __GNUC__ )
+  #define __ASM            __asm                                      /*!< asm keyword for GNU Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for GNU Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __ICCARM__ )
+  #define __ASM            __asm                                      /*!< asm keyword for IAR Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for IAR Compiler. Only available in High optimization mode! */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __TMS470__ )
+  #define __ASM            __asm                                      /*!< asm keyword for TI CCS Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __TASKING__ )
+  #define __ASM            __asm                                      /*!< asm keyword for TASKING Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for TASKING Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __CSMC__ )
+  #define __packed
+  #define __ASM            _asm                                      /*!< asm keyword for COSMIC Compiler */
+  #define __INLINE         inline                                    /*!< inline keyword for COSMIC Compiler. Use -pc99 on compile line */
+  #define __STATIC_INLINE  static inline
+
+#else
+  #error Unknown compiler
+#endif
+
+/** __FPU_USED indicates whether an FPU is used or not.
+    This core does not support an FPU at all
+*/
+#define __FPU_USED       0U
+
+#if defined ( __CC_ARM )
+  #if defined __TARGET_FPU_VFP
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #if defined __ARM_PCS_VFP
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __GNUC__ )
+  #if defined (__VFP_FP__) && !defined(__SOFTFP__)
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __ICCARM__ )
+  #if defined __ARMVFP__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __TMS470__ )
+  #if defined __TI_VFP_SUPPORT__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __TASKING__ )
+  #if defined __FPU_VFP__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __CSMC__ )
+  #if ( __CSMC__ & 0x400U)
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#endif
+
+#include "core_cmInstr.h"                /* Core Instruction Access */
+#include "core_cmFunc.h"                 /* Core Function Access */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CM0_H_GENERIC */
+
+#ifndef __CMSIS_GENERIC
+
+#ifndef __CORE_CM0_H_DEPENDANT
+#define __CORE_CM0_H_DEPENDANT
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* check device defines and use defaults */
+#if defined __CHECK_DEVICE_DEFINES
+  #ifndef __CM0_REV
+    #define __CM0_REV               0x0000U
+    #warning "__CM0_REV not defined in device header file; using default!"
+  #endif
+
+  #ifndef __NVIC_PRIO_BITS
+    #define __NVIC_PRIO_BITS          2U
+    #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
+  #endif
+
+  #ifndef __Vendor_SysTickConfig
+    #define __Vendor_SysTickConfig    0U
+    #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
+  #endif
+#endif
+
+/* IO definitions (access restrictions to peripheral registers) */
+/**
+    \defgroup CMSIS_glob_defs CMSIS Global Defines
+
+    <strong>IO Type Qualifiers</strong> are used
+    \li to specify the access to peripheral variables.
+    \li for automatic generation of peripheral register debug information.
+*/
+#ifdef __cplusplus
+  #define   __I     volatile             /*!< Defines 'read only' permissions */
+#else
+  #define   __I     volatile const       /*!< Defines 'read only' permissions */
+#endif
+#define     __O     volatile             /*!< Defines 'write only' permissions */
+#define     __IO    volatile             /*!< Defines 'read / write' permissions */
+
+/* following defines should be used for structure members */
+#define     __IM     volatile const      /*! Defines 'read only' structure member permissions */
+#define     __OM     volatile            /*! Defines 'write only' structure member permissions */
+#define     __IOM    volatile            /*! Defines 'read / write' structure member permissions */
+
+/*@} end of group Cortex_M0 */
+
+
+
+/*******************************************************************************
+ *                 Register Abstraction
+  Core Register contain:
+  - Core Register
+  - Core NVIC Register
+  - Core SCB Register
+  - Core SysTick Register
+ ******************************************************************************/
+/**
+  \defgroup CMSIS_core_register Defines and Type Definitions
+  \brief Type definitions and defines for Cortex-M processor based devices.
+*/
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_CORE  Status and Control Registers
+  \brief      Core Register type definitions.
+  @{
+ */
+
+/**
+  \brief  Union type to access the Application Program Status Register (APSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t _reserved0:28;              /*!< bit:  0..27  Reserved */
+    uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag */
+    uint32_t C:1;                        /*!< bit:     29  Carry condition code flag */
+    uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag */
+    uint32_t N:1;                        /*!< bit:     31  Negative condition code flag */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} APSR_Type;
+
+/* APSR Register Definitions */
+#define APSR_N_Pos                         31U                                            /*!< APSR: N Position */
+#define APSR_N_Msk                         (1UL << APSR_N_Pos)                            /*!< APSR: N Mask */
+
+#define APSR_Z_Pos                         30U                                            /*!< APSR: Z Position */
+#define APSR_Z_Msk                         (1UL << APSR_Z_Pos)                            /*!< APSR: Z Mask */
+
+#define APSR_C_Pos                         29U                                            /*!< APSR: C Position */
+#define APSR_C_Msk                         (1UL << APSR_C_Pos)                            /*!< APSR: C Mask */
+
+#define APSR_V_Pos                         28U                                            /*!< APSR: V Position */
+#define APSR_V_Msk                         (1UL << APSR_V_Pos)                            /*!< APSR: V Mask */
+
+
+/**
+  \brief  Union type to access the Interrupt Program Status Register (IPSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number */
+    uint32_t _reserved0:23;              /*!< bit:  9..31  Reserved */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} IPSR_Type;
+
+/* IPSR Register Definitions */
+#define IPSR_ISR_Pos                        0U                                            /*!< IPSR: ISR Position */
+#define IPSR_ISR_Msk                       (0x1FFUL /*<< IPSR_ISR_Pos*/)                  /*!< IPSR: ISR Mask */
+
+
+/**
+  \brief  Union type to access the Special-Purpose Program Status Registers (xPSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number */
+    uint32_t _reserved0:15;              /*!< bit:  9..23  Reserved */
+    uint32_t T:1;                        /*!< bit:     24  Thumb bit        (read 0) */
+    uint32_t _reserved1:3;               /*!< bit: 25..27  Reserved */
+    uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag */
+    uint32_t C:1;                        /*!< bit:     29  Carry condition code flag */
+    uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag */
+    uint32_t N:1;                        /*!< bit:     31  Negative condition code flag */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} xPSR_Type;
+
+/* xPSR Register Definitions */
+#define xPSR_N_Pos                         31U                                            /*!< xPSR: N Position */
+#define xPSR_N_Msk                         (1UL << xPSR_N_Pos)                            /*!< xPSR: N Mask */
+
+#define xPSR_Z_Pos                         30U                                            /*!< xPSR: Z Position */
+#define xPSR_Z_Msk                         (1UL << xPSR_Z_Pos)                            /*!< xPSR: Z Mask */
+
+#define xPSR_C_Pos                         29U                                            /*!< xPSR: C Position */
+#define xPSR_C_Msk                         (1UL << xPSR_C_Pos)                            /*!< xPSR: C Mask */
+
+#define xPSR_V_Pos                         28U                                            /*!< xPSR: V Position */
+#define xPSR_V_Msk                         (1UL << xPSR_V_Pos)                            /*!< xPSR: V Mask */
+
+#define xPSR_T_Pos                         24U                                            /*!< xPSR: T Position */
+#define xPSR_T_Msk                         (1UL << xPSR_T_Pos)                            /*!< xPSR: T Mask */
+
+#define xPSR_ISR_Pos                        0U                                            /*!< xPSR: ISR Position */
+#define xPSR_ISR_Msk                       (0x1FFUL /*<< xPSR_ISR_Pos*/)                  /*!< xPSR: ISR Mask */
+
+
+/**
+  \brief  Union type to access the Control Registers (CONTROL).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t _reserved0:1;               /*!< bit:      0  Reserved */
+    uint32_t SPSEL:1;                    /*!< bit:      1  Stack to be used */
+    uint32_t _reserved1:30;              /*!< bit:  2..31  Reserved */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} CONTROL_Type;
+
+/* CONTROL Register Definitions */
+#define CONTROL_SPSEL_Pos                   1U                                            /*!< CONTROL: SPSEL Position */
+#define CONTROL_SPSEL_Msk                  (1UL << CONTROL_SPSEL_Pos)                     /*!< CONTROL: SPSEL Mask */
+
+/*@} end of group CMSIS_CORE */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_NVIC  Nested Vectored Interrupt Controller (NVIC)
+  \brief      Type definitions for the NVIC Registers
+  @{
+ */
+
+/**
+  \brief  Structure type to access the Nested Vectored Interrupt Controller (NVIC).
+ */
+typedef struct
+{
+  __IOM uint32_t ISER[1U];               /*!< Offset: 0x000 (R/W)  Interrupt Set Enable Register */
+        uint32_t RESERVED0[31U];
+  __IOM uint32_t ICER[1U];               /*!< Offset: 0x080 (R/W)  Interrupt Clear Enable Register */
+        uint32_t RSERVED1[31U];
+  __IOM uint32_t ISPR[1U];               /*!< Offset: 0x100 (R/W)  Interrupt Set Pending Register */
+        uint32_t RESERVED2[31U];
+  __IOM uint32_t ICPR[1U];               /*!< Offset: 0x180 (R/W)  Interrupt Clear Pending Register */
+        uint32_t RESERVED3[31U];
+        uint32_t RESERVED4[64U];
+  __IOM uint32_t IP[8U];                 /*!< Offset: 0x300 (R/W)  Interrupt Priority Register */
+}  NVIC_Type;
+
+/*@} end of group CMSIS_NVIC */
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_SCB     System Control Block (SCB)
+  \brief    Type definitions for the System Control Block Registers
+  @{
+ */
+
+/**
+  \brief  Structure type to access the System Control Block (SCB).
+ */
+typedef struct
+{
+  __IM  uint32_t CPUID;                  /*!< Offset: 0x000 (R/ )  CPUID Base Register */
+  __IOM uint32_t ICSR;                   /*!< Offset: 0x004 (R/W)  Interrupt Control and State Register */
+        uint32_t RESERVED0;
+  __IOM uint32_t AIRCR;                  /*!< Offset: 0x00C (R/W)  Application Interrupt and Reset Control Register */
+  __IOM uint32_t SCR;                    /*!< Offset: 0x010 (R/W)  System Control Register */
+  __IOM uint32_t CCR;                    /*!< Offset: 0x014 (R/W)  Configuration Control Register */
+        uint32_t RESERVED1;
+  __IOM uint32_t SHP[2U];                /*!< Offset: 0x01C (R/W)  System Handlers Priority Registers. [0] is RESERVED */
+  __IOM uint32_t SHCSR;                  /*!< Offset: 0x024 (R/W)  System Handler Control and State Register */
+} SCB_Type;
+
+/* SCB CPUID Register Definitions */
+#define SCB_CPUID_IMPLEMENTER_Pos          24U                                            /*!< SCB CPUID: IMPLEMENTER Position */
+#define SCB_CPUID_IMPLEMENTER_Msk          (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos)          /*!< SCB CPUID: IMPLEMENTER Mask */
+
+#define SCB_CPUID_VARIANT_Pos              20U                                            /*!< SCB CPUID: VARIANT Position */
+#define SCB_CPUID_VARIANT_Msk              (0xFUL << SCB_CPUID_VARIANT_Pos)               /*!< SCB CPUID: VARIANT Mask */
+
+#define SCB_CPUID_ARCHITECTURE_Pos         16U                                            /*!< SCB CPUID: ARCHITECTURE Position */
+#define SCB_CPUID_ARCHITECTURE_Msk         (0xFUL << SCB_CPUID_ARCHITECTURE_Pos)          /*!< SCB CPUID: ARCHITECTURE Mask */
+
+#define SCB_CPUID_PARTNO_Pos                4U                                            /*!< SCB CPUID: PARTNO Position */
+#define SCB_CPUID_PARTNO_Msk               (0xFFFUL << SCB_CPUID_PARTNO_Pos)              /*!< SCB CPUID: PARTNO Mask */
+
+#define SCB_CPUID_REVISION_Pos              0U                                            /*!< SCB CPUID: REVISION Position */
+#define SCB_CPUID_REVISION_Msk             (0xFUL /*<< SCB_CPUID_REVISION_Pos*/)          /*!< SCB CPUID: REVISION Mask */
+
+/* SCB Interrupt Control State Register Definitions */
+#define SCB_ICSR_NMIPENDSET_Pos            31U                                            /*!< SCB ICSR: NMIPENDSET Position */
+#define SCB_ICSR_NMIPENDSET_Msk            (1UL << SCB_ICSR_NMIPENDSET_Pos)               /*!< SCB ICSR: NMIPENDSET Mask */
+
+#define SCB_ICSR_PENDSVSET_Pos             28U                                            /*!< SCB ICSR: PENDSVSET Position */
+#define SCB_ICSR_PENDSVSET_Msk             (1UL << SCB_ICSR_PENDSVSET_Pos)                /*!< SCB ICSR: PENDSVSET Mask */
+
+#define SCB_ICSR_PENDSVCLR_Pos             27U                                            /*!< SCB ICSR: PENDSVCLR Position */
+#define SCB_ICSR_PENDSVCLR_Msk             (1UL << SCB_ICSR_PENDSVCLR_Pos)                /*!< SCB ICSR: PENDSVCLR Mask */
+
+#define SCB_ICSR_PENDSTSET_Pos             26U                                            /*!< SCB ICSR: PENDSTSET Position */
+#define SCB_ICSR_PENDSTSET_Msk             (1UL << SCB_ICSR_PENDSTSET_Pos)                /*!< SCB ICSR: PENDSTSET Mask */
+
+#define SCB_ICSR_PENDSTCLR_Pos             25U                                            /*!< SCB ICSR: PENDSTCLR Position */
+#define SCB_ICSR_PENDSTCLR_Msk             (1UL << SCB_ICSR_PENDSTCLR_Pos)                /*!< SCB ICSR: PENDSTCLR Mask */
+
+#define SCB_ICSR_ISRPREEMPT_Pos            23U                                            /*!< SCB ICSR: ISRPREEMPT Position */
+#define SCB_ICSR_ISRPREEMPT_Msk            (1UL << SCB_ICSR_ISRPREEMPT_Pos)               /*!< SCB ICSR: ISRPREEMPT Mask */
+
+#define SCB_ICSR_ISRPENDING_Pos            22U                                            /*!< SCB ICSR: ISRPENDING Position */
+#define SCB_ICSR_ISRPENDING_Msk            (1UL << SCB_ICSR_ISRPENDING_Pos)               /*!< SCB ICSR: ISRPENDING Mask */
+
+#define SCB_ICSR_VECTPENDING_Pos           12U                                            /*!< SCB ICSR: VECTPENDING Position */
+#define SCB_ICSR_VECTPENDING_Msk           (0x1FFUL << SCB_ICSR_VECTPENDING_Pos)          /*!< SCB ICSR: VECTPENDING Mask */
+
+#define SCB_ICSR_VECTACTIVE_Pos             0U                                            /*!< SCB ICSR: VECTACTIVE Position */
+#define SCB_ICSR_VECTACTIVE_Msk            (0x1FFUL /*<< SCB_ICSR_VECTACTIVE_Pos*/)       /*!< SCB ICSR: VECTACTIVE Mask */
+
+/* SCB Application Interrupt and Reset Control Register Definitions */
+#define SCB_AIRCR_VECTKEY_Pos              16U                                            /*!< SCB AIRCR: VECTKEY Position */
+#define SCB_AIRCR_VECTKEY_Msk              (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos)            /*!< SCB AIRCR: VECTKEY Mask */
+
+#define SCB_AIRCR_VECTKEYSTAT_Pos          16U                                            /*!< SCB AIRCR: VECTKEYSTAT Position */
+#define SCB_AIRCR_VECTKEYSTAT_Msk          (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos)        /*!< SCB AIRCR: VECTKEYSTAT Mask */
+
+#define SCB_AIRCR_ENDIANESS_Pos            15U                                            /*!< SCB AIRCR: ENDIANESS Position */
+#define SCB_AIRCR_ENDIANESS_Msk            (1UL << SCB_AIRCR_ENDIANESS_Pos)               /*!< SCB AIRCR: ENDIANESS Mask */
+
+#define SCB_AIRCR_SYSRESETREQ_Pos           2U                                            /*!< SCB AIRCR: SYSRESETREQ Position */
+#define SCB_AIRCR_SYSRESETREQ_Msk          (1UL << SCB_AIRCR_SYSRESETREQ_Pos)             /*!< SCB AIRCR: SYSRESETREQ Mask */
+
+#define SCB_AIRCR_VECTCLRACTIVE_Pos         1U                                            /*!< SCB AIRCR: VECTCLRACTIVE Position */
+#define SCB_AIRCR_VECTCLRACTIVE_Msk        (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos)           /*!< SCB AIRCR: VECTCLRACTIVE Mask */
+
+/* SCB System Control Register Definitions */
+#define SCB_SCR_SEVONPEND_Pos               4U                                            /*!< SCB SCR: SEVONPEND Position */
+#define SCB_SCR_SEVONPEND_Msk              (1UL << SCB_SCR_SEVONPEND_Pos)                 /*!< SCB SCR: SEVONPEND Mask */
+
+#define SCB_SCR_SLEEPDEEP_Pos               2U                                            /*!< SCB SCR: SLEEPDEEP Position */
+#define SCB_SCR_SLEEPDEEP_Msk              (1UL << SCB_SCR_SLEEPDEEP_Pos)                 /*!< SCB SCR: SLEEPDEEP Mask */
+
+#define SCB_SCR_SLEEPONEXIT_Pos             1U                                            /*!< SCB SCR: SLEEPONEXIT Position */
+#define SCB_SCR_SLEEPONEXIT_Msk            (1UL << SCB_SCR_SLEEPONEXIT_Pos)               /*!< SCB SCR: SLEEPONEXIT Mask */
+
+/* SCB Configuration Control Register Definitions */
+#define SCB_CCR_STKALIGN_Pos                9U                                            /*!< SCB CCR: STKALIGN Position */
+#define SCB_CCR_STKALIGN_Msk               (1UL << SCB_CCR_STKALIGN_Pos)                  /*!< SCB CCR: STKALIGN Mask */
+
+#define SCB_CCR_UNALIGN_TRP_Pos             3U                                            /*!< SCB CCR: UNALIGN_TRP Position */
+#define SCB_CCR_UNALIGN_TRP_Msk            (1UL << SCB_CCR_UNALIGN_TRP_Pos)               /*!< SCB CCR: UNALIGN_TRP Mask */
+
+/* SCB System Handler Control and State Register Definitions */
+#define SCB_SHCSR_SVCALLPENDED_Pos         15U                                            /*!< SCB SHCSR: SVCALLPENDED Position */
+#define SCB_SHCSR_SVCALLPENDED_Msk         (1UL << SCB_SHCSR_SVCALLPENDED_Pos)            /*!< SCB SHCSR: SVCALLPENDED Mask */
+
+/*@} end of group CMSIS_SCB */
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_SysTick     System Tick Timer (SysTick)
+  \brief    Type definitions for the System Timer Registers.
+  @{
+ */
+
+/**
+  \brief  Structure type to access the System Timer (SysTick).
+ */
+typedef struct
+{
+  __IOM uint32_t CTRL;                   /*!< Offset: 0x000 (R/W)  SysTick Control and Status Register */
+  __IOM uint32_t LOAD;                   /*!< Offset: 0x004 (R/W)  SysTick Reload Value Register */
+  __IOM uint32_t VAL;                    /*!< Offset: 0x008 (R/W)  SysTick Current Value Register */
+  __IM  uint32_t CALIB;                  /*!< Offset: 0x00C (R/ )  SysTick Calibration Register */
+} SysTick_Type;
+
+/* SysTick Control / Status Register Definitions */
+#define SysTick_CTRL_COUNTFLAG_Pos         16U                                            /*!< SysTick CTRL: COUNTFLAG Position */
+#define SysTick_CTRL_COUNTFLAG_Msk         (1UL << SysTick_CTRL_COUNTFLAG_Pos)            /*!< SysTick CTRL: COUNTFLAG Mask */
+
+#define SysTick_CTRL_CLKSOURCE_Pos          2U                                            /*!< SysTick CTRL: CLKSOURCE Position */
+#define SysTick_CTRL_CLKSOURCE_Msk         (1UL << SysTick_CTRL_CLKSOURCE_Pos)            /*!< SysTick CTRL: CLKSOURCE Mask */
+
+#define SysTick_CTRL_TICKINT_Pos            1U                                            /*!< SysTick CTRL: TICKINT Position */
+#define SysTick_CTRL_TICKINT_Msk           (1UL << SysTick_CTRL_TICKINT_Pos)              /*!< SysTick CTRL: TICKINT Mask */
+
+#define SysTick_CTRL_ENABLE_Pos             0U                                            /*!< SysTick CTRL: ENABLE Position */
+#define SysTick_CTRL_ENABLE_Msk            (1UL /*<< SysTick_CTRL_ENABLE_Pos*/)           /*!< SysTick CTRL: ENABLE Mask */
+
+/* SysTick Reload Register Definitions */
+#define SysTick_LOAD_RELOAD_Pos             0U                                            /*!< SysTick LOAD: RELOAD Position */
+#define SysTick_LOAD_RELOAD_Msk            (0xFFFFFFUL /*<< SysTick_LOAD_RELOAD_Pos*/)    /*!< SysTick LOAD: RELOAD Mask */
+
+/* SysTick Current Register Definitions */
+#define SysTick_VAL_CURRENT_Pos             0U                                            /*!< SysTick VAL: CURRENT Position */
+#define SysTick_VAL_CURRENT_Msk            (0xFFFFFFUL /*<< SysTick_VAL_CURRENT_Pos*/)    /*!< SysTick VAL: CURRENT Mask */
+
+/* SysTick Calibration Register Definitions */
+#define SysTick_CALIB_NOREF_Pos            31U                                            /*!< SysTick CALIB: NOREF Position */
+#define SysTick_CALIB_NOREF_Msk            (1UL << SysTick_CALIB_NOREF_Pos)               /*!< SysTick CALIB: NOREF Mask */
+
+#define SysTick_CALIB_SKEW_Pos             30U                                            /*!< SysTick CALIB: SKEW Position */
+#define SysTick_CALIB_SKEW_Msk             (1UL << SysTick_CALIB_SKEW_Pos)                /*!< SysTick CALIB: SKEW Mask */
+
+#define SysTick_CALIB_TENMS_Pos             0U                                            /*!< SysTick CALIB: TENMS Position */
+#define SysTick_CALIB_TENMS_Msk            (0xFFFFFFUL /*<< SysTick_CALIB_TENMS_Pos*/)    /*!< SysTick CALIB: TENMS Mask */
+
+/*@} end of group CMSIS_SysTick */
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_CoreDebug       Core Debug Registers (CoreDebug)
+  \brief    Cortex-M0 Core Debug Registers (DCB registers, SHCSR, and DFSR) are only accessible over DAP and not via processor.
+            Therefore they are not covered by the Cortex-M0 header file.
+  @{
+ */
+/*@} end of group CMSIS_CoreDebug */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_core_bitfield     Core register bit field macros
+  \brief      Macros for use with bit field definitions (xxx_Pos, xxx_Msk).
+  @{
+ */
+
+/**
+  \brief   Mask and shift a bit field value for use in a register bit range.
+  \param[in] field  Name of the register bit field.
+  \param[in] value  Value of the bit field.
+  \return           Masked and shifted value.
+*/
+#define _VAL2FLD(field, value)    ((value << field ## _Pos) & field ## _Msk)
+
+/**
+  \brief     Mask and shift a register value to extract a bit filed value.
+  \param[in] field  Name of the register bit field.
+  \param[in] value  Value of register.
+  \return           Masked and shifted bit field value.
+*/
+#define _FLD2VAL(field, value)    ((value & field ## _Msk) >> field ## _Pos)
+
+/*@} end of group CMSIS_core_bitfield */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_core_base     Core Definitions
+  \brief      Definitions for base addresses, unions, and structures.
+  @{
+ */
+
+/* Memory mapping of Cortex-M0 Hardware */
+#define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
+#define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address */
+#define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address */
+#define SCB_BASE            (SCS_BASE +  0x0D00UL)                    /*!< System Control Block Base Address */
+
+#define SCB                 ((SCB_Type       *)     SCB_BASE      )   /*!< SCB configuration struct */
+#define SysTick             ((SysTick_Type   *)     SysTick_BASE  )   /*!< SysTick configuration struct */
+#define NVIC                ((NVIC_Type      *)     NVIC_BASE     )   /*!< NVIC configuration struct */
+
+
+/*@} */
+
+
+
+/*******************************************************************************
+ *                Hardware Abstraction Layer
+  Core Function Interface contains:
+  - Core NVIC Functions
+  - Core SysTick Functions
+  - Core Register Access Functions
+ ******************************************************************************/
+/**
+  \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
+*/
+
+
+
+/* ##########################   NVIC functions  #################################### */
+/**
+  \ingroup  CMSIS_Core_FunctionInterface
+  \defgroup CMSIS_Core_NVICFunctions NVIC Functions
+  \brief    Functions that manage interrupts and exceptions via the NVIC.
+  @{
+ */
+
+/* Interrupt Priorities are WORD accessible only under ARMv6M                   */
+/* The following MACROS handle generation of the register offset and byte masks */
+#define _BIT_SHIFT(IRQn)         (  ((((uint32_t)(int32_t)(IRQn))         )      &  0x03UL) * 8UL)
+#define _SHP_IDX(IRQn)           ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >>    2UL)      )
+#define _IP_IDX(IRQn)            (   (((uint32_t)(int32_t)(IRQn))                >>    2UL)      )
+
+
+/**
+  \brief   Enable External Interrupt
+  \details Enables a device-specific interrupt in the NVIC interrupt controller.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Disable External Interrupt
+  \details Disables a device-specific interrupt in the NVIC interrupt controller.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Get Pending Interrupt
+  \details Reads the pending register in the NVIC and returns the pending bit for the specified interrupt.
+  \param [in]      IRQn  Interrupt number.
+  \return             0  Interrupt status is not pending.
+  \return             1  Interrupt status is pending.
+ */
+__STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
+{
+  return((uint32_t)(((NVIC->ISPR[0U] & (1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
+}
+
+
+/**
+  \brief   Set Pending Interrupt
+  \details Sets the pending bit of an external interrupt.
+  \param [in]      IRQn  Interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Clear Pending Interrupt
+  \details Clears the pending bit of an external interrupt.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Set Interrupt Priority
+  \details Sets the priority of an interrupt.
+  \note    The priority cannot be set for every core interrupt.
+  \param [in]      IRQn  Interrupt number.
+  \param [in]  priority  Priority to set.
+ */
+__STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
+{
+  if ((int32_t)(IRQn) < 0)
+  {
+    SCB->SHP[_SHP_IDX(IRQn)] = ((uint32_t)(SCB->SHP[_SHP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
+       (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
+  }
+  else
+  {
+    NVIC->IP[_IP_IDX(IRQn)]  = ((uint32_t)(NVIC->IP[_IP_IDX(IRQn)]  & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
+       (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
+  }
+}
+
+
+/**
+  \brief   Get Interrupt Priority
+  \details Reads the priority of an interrupt.
+           The interrupt number can be positive to specify an external (device specific) interrupt,
+           or negative to specify an internal (core) interrupt.
+  \param [in]   IRQn  Interrupt number.
+  \return             Interrupt Priority.
+                      Value is aligned automatically to the implemented priority bits of the microcontroller.
+ */
+__STATIC_INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn)
+{
+
+  if ((int32_t)(IRQn) < 0)
+  {
+    return((uint32_t)(((SCB->SHP[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
+  }
+  else
+  {
+    return((uint32_t)(((NVIC->IP[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
+  }
+}
+
+
+/**
+  \brief   System Reset
+  \details Initiates a system reset request to reset the MCU.
+ */
+__STATIC_INLINE void NVIC_SystemReset(void)
+{
+  __DSB();                                                          /* Ensure all outstanding memory accesses included
+                                                                       buffered write are completed before reset */
+  SCB->AIRCR  = ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
+                 SCB_AIRCR_SYSRESETREQ_Msk);
+  __DSB();                                                          /* Ensure completion of memory access */
+
+  for (;;)                                                           /* wait until reset */
+  {
+    __NOP();
+  }
+}
+
+/*@} end of CMSIS_Core_NVICFunctions */
+
+
+
+/* ##################################    SysTick function  ############################################ */
+/**
+  \ingroup  CMSIS_Core_FunctionInterface
+  \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
+  \brief    Functions that configure the System.
+  @{
+ */
+
+#if (__Vendor_SysTickConfig == 0U)
+
+/**
+  \brief   System Tick Configuration
+  \details Initializes the System Timer and its interrupt, and starts the System Tick Timer.
+           Counter is in free running mode to generate periodic interrupts.
+  \param [in]  ticks  Number of ticks between two interrupts.
+  \return          0  Function succeeded.
+  \return          1  Function failed.
+  \note    When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
+           function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
+           must contain a vendor-specific implementation of this function.
+ */
+__STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
+{
+  if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk)
+  {
+    return (1UL);                                                   /* Reload value impossible */
+  }
+
+  SysTick->LOAD  = (uint32_t)(ticks - 1UL);                         /* set reload register */
+  NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */
+  SysTick->VAL   = 0UL;                                             /* Load the SysTick Counter Value */
+  SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
+                   SysTick_CTRL_TICKINT_Msk   |
+                   SysTick_CTRL_ENABLE_Msk;                         /* Enable SysTick IRQ and SysTick Timer */
+  return (0UL);                                                     /* Function successful */
+}
+
+#endif
+
+/*@} end of CMSIS_Core_SysTickFunctions */
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CM0_H_DEPENDANT */
+
+#endif /* __CMSIS_GENERIC */

src/platform/cm4/cmsis/include/core_cm0plus.h

@@ -0,0 +1,914 @@
+/**************************************************************************//**
+ * @file     core_cm0plus.h
+ * @brief    CMSIS Cortex-M0+ Core Peripheral Access Layer Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CM0PLUS_H_GENERIC
+#define __CORE_CM0PLUS_H_GENERIC
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/**
+  \page CMSIS_MISRA_Exceptions  MISRA-C:2004 Compliance Exceptions
+  CMSIS violates the following MISRA-C:2004 rules:
+
+   \li Required Rule 8.5, object/function definition in header file.<br>
+     Function definitions in header files are used to allow 'inlining'.
+
+   \li Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br>
+     Unions are used for effective representation of core registers.
+
+   \li Advisory Rule 19.7, Function-like macro defined.<br>
+     Function-like macros are used to allow more efficient code.
+ */
+
+
+/*******************************************************************************
+ *                 CMSIS definitions
+ ******************************************************************************/
+/**
+  \ingroup Cortex-M0+
+  @{
+ */
+
+/*  CMSIS CM0+ definitions */
+#define __CM0PLUS_CMSIS_VERSION_MAIN (0x04U)                                   /*!< [31:16] CMSIS HAL main version */
+#define __CM0PLUS_CMSIS_VERSION_SUB  (0x1EU)                                   /*!< [15:0]  CMSIS HAL sub version */
+#define __CM0PLUS_CMSIS_VERSION      ((__CM0PLUS_CMSIS_VERSION_MAIN << 16U) | \
+                                       __CM0PLUS_CMSIS_VERSION_SUB           ) /*!< CMSIS HAL version number */
+
+#define __CORTEX_M                (0x00U)                                      /*!< Cortex-M Core */
+
+
+#if   defined ( __CC_ARM )
+  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler */
+  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler */
+  #define __STATIC_INLINE  static __inline
+
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler */
+  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler */
+  #define __STATIC_INLINE  static __inline
+
+#elif defined ( __GNUC__ )
+  #define __ASM            __asm                                      /*!< asm keyword for GNU Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for GNU Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __ICCARM__ )
+  #define __ASM            __asm                                      /*!< asm keyword for IAR Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for IAR Compiler. Only available in High optimization mode! */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __TMS470__ )
+  #define __ASM            __asm                                      /*!< asm keyword for TI CCS Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __TASKING__ )
+  #define __ASM            __asm                                      /*!< asm keyword for TASKING Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for TASKING Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __CSMC__ )
+  #define __packed
+  #define __ASM            _asm                                      /*!< asm keyword for COSMIC Compiler */
+  #define __INLINE         inline                                    /*!< inline keyword for COSMIC Compiler. Use -pc99 on compile line */
+  #define __STATIC_INLINE  static inline
+
+#else
+  #error Unknown compiler
+#endif
+
+/** __FPU_USED indicates whether an FPU is used or not.
+    This core does not support an FPU at all
+*/
+#define __FPU_USED       0U
+
+#if defined ( __CC_ARM )
+  #if defined __TARGET_FPU_VFP
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #if defined __ARM_PCS_VFP
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __GNUC__ )
+  #if defined (__VFP_FP__) && !defined(__SOFTFP__)
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __ICCARM__ )
+  #if defined __ARMVFP__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __TMS470__ )
+  #if defined __TI_VFP_SUPPORT__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __TASKING__ )
+  #if defined __FPU_VFP__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __CSMC__ )
+  #if ( __CSMC__ & 0x400U)
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#endif
+
+#include "core_cmInstr.h"                /* Core Instruction Access */
+#include "core_cmFunc.h"                 /* Core Function Access */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CM0PLUS_H_GENERIC */
+
+#ifndef __CMSIS_GENERIC
+
+#ifndef __CORE_CM0PLUS_H_DEPENDANT
+#define __CORE_CM0PLUS_H_DEPENDANT
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* check device defines and use defaults */
+#if defined __CHECK_DEVICE_DEFINES
+  #ifndef __CM0PLUS_REV
+    #define __CM0PLUS_REV             0x0000U
+    #warning "__CM0PLUS_REV not defined in device header file; using default!"
+  #endif
+
+  #ifndef __MPU_PRESENT
+    #define __MPU_PRESENT             0U
+    #warning "__MPU_PRESENT not defined in device header file; using default!"
+  #endif
+
+  #ifndef __VTOR_PRESENT
+    #define __VTOR_PRESENT            0U
+    #warning "__VTOR_PRESENT not defined in device header file; using default!"
+  #endif
+
+  #ifndef __NVIC_PRIO_BITS
+    #define __NVIC_PRIO_BITS          2U
+    #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
+  #endif
+
+  #ifndef __Vendor_SysTickConfig
+    #define __Vendor_SysTickConfig    0U
+    #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
+  #endif
+#endif
+
+/* IO definitions (access restrictions to peripheral registers) */
+/**
+    \defgroup CMSIS_glob_defs CMSIS Global Defines
+
+    <strong>IO Type Qualifiers</strong> are used
+    \li to specify the access to peripheral variables.
+    \li for automatic generation of peripheral register debug information.
+*/
+#ifdef __cplusplus
+  #define   __I     volatile             /*!< Defines 'read only' permissions */
+#else
+  #define   __I     volatile const       /*!< Defines 'read only' permissions */
+#endif
+#define     __O     volatile             /*!< Defines 'write only' permissions */
+#define     __IO    volatile             /*!< Defines 'read / write' permissions */
+
+/* following defines should be used for structure members */
+#define     __IM     volatile const      /*! Defines 'read only' structure member permissions */
+#define     __OM     volatile            /*! Defines 'write only' structure member permissions */
+#define     __IOM    volatile            /*! Defines 'read / write' structure member permissions */
+
+/*@} end of group Cortex-M0+ */
+
+
+
+/*******************************************************************************
+ *                 Register Abstraction
+  Core Register contain:
+  - Core Register
+  - Core NVIC Register
+  - Core SCB Register
+  - Core SysTick Register
+  - Core MPU Register
+ ******************************************************************************/
+/**
+  \defgroup CMSIS_core_register Defines and Type Definitions
+  \brief Type definitions and defines for Cortex-M processor based devices.
+*/
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_CORE  Status and Control Registers
+  \brief      Core Register type definitions.
+  @{
+ */
+
+/**
+  \brief  Union type to access the Application Program Status Register (APSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t _reserved0:28;              /*!< bit:  0..27  Reserved */
+    uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag */
+    uint32_t C:1;                        /*!< bit:     29  Carry condition code flag */
+    uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag */
+    uint32_t N:1;                        /*!< bit:     31  Negative condition code flag */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} APSR_Type;
+
+/* APSR Register Definitions */
+#define APSR_N_Pos                         31U                                            /*!< APSR: N Position */
+#define APSR_N_Msk                         (1UL << APSR_N_Pos)                            /*!< APSR: N Mask */
+
+#define APSR_Z_Pos                         30U                                            /*!< APSR: Z Position */
+#define APSR_Z_Msk                         (1UL << APSR_Z_Pos)                            /*!< APSR: Z Mask */
+
+#define APSR_C_Pos                         29U                                            /*!< APSR: C Position */
+#define APSR_C_Msk                         (1UL << APSR_C_Pos)                            /*!< APSR: C Mask */
+
+#define APSR_V_Pos                         28U                                            /*!< APSR: V Position */
+#define APSR_V_Msk                         (1UL << APSR_V_Pos)                            /*!< APSR: V Mask */
+
+
+/**
+  \brief  Union type to access the Interrupt Program Status Register (IPSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number */
+    uint32_t _reserved0:23;              /*!< bit:  9..31  Reserved */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} IPSR_Type;
+
+/* IPSR Register Definitions */
+#define IPSR_ISR_Pos                        0U                                            /*!< IPSR: ISR Position */
+#define IPSR_ISR_Msk                       (0x1FFUL /*<< IPSR_ISR_Pos*/)                  /*!< IPSR: ISR Mask */
+
+
+/**
+  \brief  Union type to access the Special-Purpose Program Status Registers (xPSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number */
+    uint32_t _reserved0:15;              /*!< bit:  9..23  Reserved */
+    uint32_t T:1;                        /*!< bit:     24  Thumb bit        (read 0) */
+    uint32_t _reserved1:3;               /*!< bit: 25..27  Reserved */
+    uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag */
+    uint32_t C:1;                        /*!< bit:     29  Carry condition code flag */
+    uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag */
+    uint32_t N:1;                        /*!< bit:     31  Negative condition code flag */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} xPSR_Type;
+
+/* xPSR Register Definitions */
+#define xPSR_N_Pos                         31U                                            /*!< xPSR: N Position */
+#define xPSR_N_Msk                         (1UL << xPSR_N_Pos)                            /*!< xPSR: N Mask */
+
+#define xPSR_Z_Pos                         30U                                            /*!< xPSR: Z Position */
+#define xPSR_Z_Msk                         (1UL << xPSR_Z_Pos)                            /*!< xPSR: Z Mask */
+
+#define xPSR_C_Pos                         29U                                            /*!< xPSR: C Position */
+#define xPSR_C_Msk                         (1UL << xPSR_C_Pos)                            /*!< xPSR: C Mask */
+
+#define xPSR_V_Pos                         28U                                            /*!< xPSR: V Position */
+#define xPSR_V_Msk                         (1UL << xPSR_V_Pos)                            /*!< xPSR: V Mask */
+
+#define xPSR_T_Pos                         24U                                            /*!< xPSR: T Position */
+#define xPSR_T_Msk                         (1UL << xPSR_T_Pos)                            /*!< xPSR: T Mask */
+
+#define xPSR_ISR_Pos                        0U                                            /*!< xPSR: ISR Position */
+#define xPSR_ISR_Msk                       (0x1FFUL /*<< xPSR_ISR_Pos*/)                  /*!< xPSR: ISR Mask */
+
+
+/**
+  \brief  Union type to access the Control Registers (CONTROL).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t nPRIV:1;                    /*!< bit:      0  Execution privilege in Thread mode */
+    uint32_t SPSEL:1;                    /*!< bit:      1  Stack to be used */
+    uint32_t _reserved1:30;              /*!< bit:  2..31  Reserved */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} CONTROL_Type;
+
+/* CONTROL Register Definitions */
+#define CONTROL_SPSEL_Pos                   1U                                            /*!< CONTROL: SPSEL Position */
+#define CONTROL_SPSEL_Msk                  (1UL << CONTROL_SPSEL_Pos)                     /*!< CONTROL: SPSEL Mask */
+
+#define CONTROL_nPRIV_Pos                   0U                                            /*!< CONTROL: nPRIV Position */
+#define CONTROL_nPRIV_Msk                  (1UL /*<< CONTROL_nPRIV_Pos*/)                 /*!< CONTROL: nPRIV Mask */
+
+/*@} end of group CMSIS_CORE */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_NVIC  Nested Vectored Interrupt Controller (NVIC)
+  \brief      Type definitions for the NVIC Registers
+  @{
+ */
+
+/**
+  \brief  Structure type to access the Nested Vectored Interrupt Controller (NVIC).
+ */
+typedef struct
+{
+  __IOM uint32_t ISER[1U];               /*!< Offset: 0x000 (R/W)  Interrupt Set Enable Register */
+        uint32_t RESERVED0[31U];
+  __IOM uint32_t ICER[1U];               /*!< Offset: 0x080 (R/W)  Interrupt Clear Enable Register */
+        uint32_t RSERVED1[31U];
+  __IOM uint32_t ISPR[1U];               /*!< Offset: 0x100 (R/W)  Interrupt Set Pending Register */
+        uint32_t RESERVED2[31U];
+  __IOM uint32_t ICPR[1U];               /*!< Offset: 0x180 (R/W)  Interrupt Clear Pending Register */
+        uint32_t RESERVED3[31U];
+        uint32_t RESERVED4[64U];
+  __IOM uint32_t IP[8U];                 /*!< Offset: 0x300 (R/W)  Interrupt Priority Register */
+}  NVIC_Type;
+
+/*@} end of group CMSIS_NVIC */
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_SCB     System Control Block (SCB)
+  \brief    Type definitions for the System Control Block Registers
+  @{
+ */
+
+/**
+  \brief  Structure type to access the System Control Block (SCB).
+ */
+typedef struct
+{
+  __IM  uint32_t CPUID;                  /*!< Offset: 0x000 (R/ )  CPUID Base Register */
+  __IOM uint32_t ICSR;                   /*!< Offset: 0x004 (R/W)  Interrupt Control and State Register */
+#if (__VTOR_PRESENT == 1U)
+  __IOM uint32_t VTOR;                   /*!< Offset: 0x008 (R/W)  Vector Table Offset Register */
+#else
+        uint32_t RESERVED0;
+#endif
+  __IOM uint32_t AIRCR;                  /*!< Offset: 0x00C (R/W)  Application Interrupt and Reset Control Register */
+  __IOM uint32_t SCR;                    /*!< Offset: 0x010 (R/W)  System Control Register */
+  __IOM uint32_t CCR;                    /*!< Offset: 0x014 (R/W)  Configuration Control Register */
+        uint32_t RESERVED1;
+  __IOM uint32_t SHP[2U];                /*!< Offset: 0x01C (R/W)  System Handlers Priority Registers. [0] is RESERVED */
+  __IOM uint32_t SHCSR;                  /*!< Offset: 0x024 (R/W)  System Handler Control and State Register */
+} SCB_Type;
+
+/* SCB CPUID Register Definitions */
+#define SCB_CPUID_IMPLEMENTER_Pos          24U                                            /*!< SCB CPUID: IMPLEMENTER Position */
+#define SCB_CPUID_IMPLEMENTER_Msk          (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos)          /*!< SCB CPUID: IMPLEMENTER Mask */
+
+#define SCB_CPUID_VARIANT_Pos              20U                                            /*!< SCB CPUID: VARIANT Position */
+#define SCB_CPUID_VARIANT_Msk              (0xFUL << SCB_CPUID_VARIANT_Pos)               /*!< SCB CPUID: VARIANT Mask */
+
+#define SCB_CPUID_ARCHITECTURE_Pos         16U                                            /*!< SCB CPUID: ARCHITECTURE Position */
+#define SCB_CPUID_ARCHITECTURE_Msk         (0xFUL << SCB_CPUID_ARCHITECTURE_Pos)          /*!< SCB CPUID: ARCHITECTURE Mask */
+
+#define SCB_CPUID_PARTNO_Pos                4U                                            /*!< SCB CPUID: PARTNO Position */
+#define SCB_CPUID_PARTNO_Msk               (0xFFFUL << SCB_CPUID_PARTNO_Pos)              /*!< SCB CPUID: PARTNO Mask */
+
+#define SCB_CPUID_REVISION_Pos              0U                                            /*!< SCB CPUID: REVISION Position */
+#define SCB_CPUID_REVISION_Msk             (0xFUL /*<< SCB_CPUID_REVISION_Pos*/)          /*!< SCB CPUID: REVISION Mask */
+
+/* SCB Interrupt Control State Register Definitions */
+#define SCB_ICSR_NMIPENDSET_Pos            31U                                            /*!< SCB ICSR: NMIPENDSET Position */
+#define SCB_ICSR_NMIPENDSET_Msk            (1UL << SCB_ICSR_NMIPENDSET_Pos)               /*!< SCB ICSR: NMIPENDSET Mask */
+
+#define SCB_ICSR_PENDSVSET_Pos             28U                                            /*!< SCB ICSR: PENDSVSET Position */
+#define SCB_ICSR_PENDSVSET_Msk             (1UL << SCB_ICSR_PENDSVSET_Pos)                /*!< SCB ICSR: PENDSVSET Mask */
+
+#define SCB_ICSR_PENDSVCLR_Pos             27U                                            /*!< SCB ICSR: PENDSVCLR Position */
+#define SCB_ICSR_PENDSVCLR_Msk             (1UL << SCB_ICSR_PENDSVCLR_Pos)                /*!< SCB ICSR: PENDSVCLR Mask */
+
+#define SCB_ICSR_PENDSTSET_Pos             26U                                            /*!< SCB ICSR: PENDSTSET Position */
+#define SCB_ICSR_PENDSTSET_Msk             (1UL << SCB_ICSR_PENDSTSET_Pos)                /*!< SCB ICSR: PENDSTSET Mask */
+
+#define SCB_ICSR_PENDSTCLR_Pos             25U                                            /*!< SCB ICSR: PENDSTCLR Position */
+#define SCB_ICSR_PENDSTCLR_Msk             (1UL << SCB_ICSR_PENDSTCLR_Pos)                /*!< SCB ICSR: PENDSTCLR Mask */
+
+#define SCB_ICSR_ISRPREEMPT_Pos            23U                                            /*!< SCB ICSR: ISRPREEMPT Position */
+#define SCB_ICSR_ISRPREEMPT_Msk            (1UL << SCB_ICSR_ISRPREEMPT_Pos)               /*!< SCB ICSR: ISRPREEMPT Mask */
+
+#define SCB_ICSR_ISRPENDING_Pos            22U                                            /*!< SCB ICSR: ISRPENDING Position */
+#define SCB_ICSR_ISRPENDING_Msk            (1UL << SCB_ICSR_ISRPENDING_Pos)               /*!< SCB ICSR: ISRPENDING Mask */
+
+#define SCB_ICSR_VECTPENDING_Pos           12U                                            /*!< SCB ICSR: VECTPENDING Position */
+#define SCB_ICSR_VECTPENDING_Msk           (0x1FFUL << SCB_ICSR_VECTPENDING_Pos)          /*!< SCB ICSR: VECTPENDING Mask */
+
+#define SCB_ICSR_VECTACTIVE_Pos             0U                                            /*!< SCB ICSR: VECTACTIVE Position */
+#define SCB_ICSR_VECTACTIVE_Msk            (0x1FFUL /*<< SCB_ICSR_VECTACTIVE_Pos*/)       /*!< SCB ICSR: VECTACTIVE Mask */
+
+#if (__VTOR_PRESENT == 1U)
+/* SCB Interrupt Control State Register Definitions */
+#define SCB_VTOR_TBLOFF_Pos                 8U                                            /*!< SCB VTOR: TBLOFF Position */
+#define SCB_VTOR_TBLOFF_Msk                (0xFFFFFFUL << SCB_VTOR_TBLOFF_Pos)            /*!< SCB VTOR: TBLOFF Mask */
+#endif
+
+/* SCB Application Interrupt and Reset Control Register Definitions */
+#define SCB_AIRCR_VECTKEY_Pos              16U                                            /*!< SCB AIRCR: VECTKEY Position */
+#define SCB_AIRCR_VECTKEY_Msk              (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos)            /*!< SCB AIRCR: VECTKEY Mask */
+
+#define SCB_AIRCR_VECTKEYSTAT_Pos          16U                                            /*!< SCB AIRCR: VECTKEYSTAT Position */
+#define SCB_AIRCR_VECTKEYSTAT_Msk          (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos)        /*!< SCB AIRCR: VECTKEYSTAT Mask */
+
+#define SCB_AIRCR_ENDIANESS_Pos            15U                                            /*!< SCB AIRCR: ENDIANESS Position */
+#define SCB_AIRCR_ENDIANESS_Msk            (1UL << SCB_AIRCR_ENDIANESS_Pos)               /*!< SCB AIRCR: ENDIANESS Mask */
+
+#define SCB_AIRCR_SYSRESETREQ_Pos           2U                                            /*!< SCB AIRCR: SYSRESETREQ Position */
+#define SCB_AIRCR_SYSRESETREQ_Msk          (1UL << SCB_AIRCR_SYSRESETREQ_Pos)             /*!< SCB AIRCR: SYSRESETREQ Mask */
+
+#define SCB_AIRCR_VECTCLRACTIVE_Pos         1U                                            /*!< SCB AIRCR: VECTCLRACTIVE Position */
+#define SCB_AIRCR_VECTCLRACTIVE_Msk        (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos)           /*!< SCB AIRCR: VECTCLRACTIVE Mask */
+
+/* SCB System Control Register Definitions */
+#define SCB_SCR_SEVONPEND_Pos               4U                                            /*!< SCB SCR: SEVONPEND Position */
+#define SCB_SCR_SEVONPEND_Msk              (1UL << SCB_SCR_SEVONPEND_Pos)                 /*!< SCB SCR: SEVONPEND Mask */
+
+#define SCB_SCR_SLEEPDEEP_Pos               2U                                            /*!< SCB SCR: SLEEPDEEP Position */
+#define SCB_SCR_SLEEPDEEP_Msk              (1UL << SCB_SCR_SLEEPDEEP_Pos)                 /*!< SCB SCR: SLEEPDEEP Mask */
+
+#define SCB_SCR_SLEEPONEXIT_Pos             1U                                            /*!< SCB SCR: SLEEPONEXIT Position */
+#define SCB_SCR_SLEEPONEXIT_Msk            (1UL << SCB_SCR_SLEEPONEXIT_Pos)               /*!< SCB SCR: SLEEPONEXIT Mask */
+
+/* SCB Configuration Control Register Definitions */
+#define SCB_CCR_STKALIGN_Pos                9U                                            /*!< SCB CCR: STKALIGN Position */
+#define SCB_CCR_STKALIGN_Msk               (1UL << SCB_CCR_STKALIGN_Pos)                  /*!< SCB CCR: STKALIGN Mask */
+
+#define SCB_CCR_UNALIGN_TRP_Pos             3U                                            /*!< SCB CCR: UNALIGN_TRP Position */
+#define SCB_CCR_UNALIGN_TRP_Msk            (1UL << SCB_CCR_UNALIGN_TRP_Pos)               /*!< SCB CCR: UNALIGN_TRP Mask */
+
+/* SCB System Handler Control and State Register Definitions */
+#define SCB_SHCSR_SVCALLPENDED_Pos         15U                                            /*!< SCB SHCSR: SVCALLPENDED Position */
+#define SCB_SHCSR_SVCALLPENDED_Msk         (1UL << SCB_SHCSR_SVCALLPENDED_Pos)            /*!< SCB SHCSR: SVCALLPENDED Mask */
+
+/*@} end of group CMSIS_SCB */
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_SysTick     System Tick Timer (SysTick)
+  \brief    Type definitions for the System Timer Registers.
+  @{
+ */
+
+/**
+  \brief  Structure type to access the System Timer (SysTick).
+ */
+typedef struct
+{
+  __IOM uint32_t CTRL;                   /*!< Offset: 0x000 (R/W)  SysTick Control and Status Register */
+  __IOM uint32_t LOAD;                   /*!< Offset: 0x004 (R/W)  SysTick Reload Value Register */
+  __IOM uint32_t VAL;                    /*!< Offset: 0x008 (R/W)  SysTick Current Value Register */
+  __IM  uint32_t CALIB;                  /*!< Offset: 0x00C (R/ )  SysTick Calibration Register */
+} SysTick_Type;
+
+/* SysTick Control / Status Register Definitions */
+#define SysTick_CTRL_COUNTFLAG_Pos         16U                                            /*!< SysTick CTRL: COUNTFLAG Position */
+#define SysTick_CTRL_COUNTFLAG_Msk         (1UL << SysTick_CTRL_COUNTFLAG_Pos)            /*!< SysTick CTRL: COUNTFLAG Mask */
+
+#define SysTick_CTRL_CLKSOURCE_Pos          2U                                            /*!< SysTick CTRL: CLKSOURCE Position */
+#define SysTick_CTRL_CLKSOURCE_Msk         (1UL << SysTick_CTRL_CLKSOURCE_Pos)            /*!< SysTick CTRL: CLKSOURCE Mask */
+
+#define SysTick_CTRL_TICKINT_Pos            1U                                            /*!< SysTick CTRL: TICKINT Position */
+#define SysTick_CTRL_TICKINT_Msk           (1UL << SysTick_CTRL_TICKINT_Pos)              /*!< SysTick CTRL: TICKINT Mask */
+
+#define SysTick_CTRL_ENABLE_Pos             0U                                            /*!< SysTick CTRL: ENABLE Position */
+#define SysTick_CTRL_ENABLE_Msk            (1UL /*<< SysTick_CTRL_ENABLE_Pos*/)           /*!< SysTick CTRL: ENABLE Mask */
+
+/* SysTick Reload Register Definitions */
+#define SysTick_LOAD_RELOAD_Pos             0U                                            /*!< SysTick LOAD: RELOAD Position */
+#define SysTick_LOAD_RELOAD_Msk            (0xFFFFFFUL /*<< SysTick_LOAD_RELOAD_Pos*/)    /*!< SysTick LOAD: RELOAD Mask */
+
+/* SysTick Current Register Definitions */
+#define SysTick_VAL_CURRENT_Pos             0U                                            /*!< SysTick VAL: CURRENT Position */
+#define SysTick_VAL_CURRENT_Msk            (0xFFFFFFUL /*<< SysTick_VAL_CURRENT_Pos*/)    /*!< SysTick VAL: CURRENT Mask */
+
+/* SysTick Calibration Register Definitions */
+#define SysTick_CALIB_NOREF_Pos            31U                                            /*!< SysTick CALIB: NOREF Position */
+#define SysTick_CALIB_NOREF_Msk            (1UL << SysTick_CALIB_NOREF_Pos)               /*!< SysTick CALIB: NOREF Mask */
+
+#define SysTick_CALIB_SKEW_Pos             30U                                            /*!< SysTick CALIB: SKEW Position */
+#define SysTick_CALIB_SKEW_Msk             (1UL << SysTick_CALIB_SKEW_Pos)                /*!< SysTick CALIB: SKEW Mask */
+
+#define SysTick_CALIB_TENMS_Pos             0U                                            /*!< SysTick CALIB: TENMS Position */
+#define SysTick_CALIB_TENMS_Msk            (0xFFFFFFUL /*<< SysTick_CALIB_TENMS_Pos*/)    /*!< SysTick CALIB: TENMS Mask */
+
+/*@} end of group CMSIS_SysTick */
+
+#if (__MPU_PRESENT == 1U)
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_MPU     Memory Protection Unit (MPU)
+  \brief    Type definitions for the Memory Protection Unit (MPU)
+  @{
+ */
+
+/**
+  \brief  Structure type to access the Memory Protection Unit (MPU).
+ */
+typedef struct
+{
+  __IM  uint32_t TYPE;                   /*!< Offset: 0x000 (R/ )  MPU Type Register */
+  __IOM uint32_t CTRL;                   /*!< Offset: 0x004 (R/W)  MPU Control Register */
+  __IOM uint32_t RNR;                    /*!< Offset: 0x008 (R/W)  MPU Region RNRber Register */
+  __IOM uint32_t RBAR;                   /*!< Offset: 0x00C (R/W)  MPU Region Base Address Register */
+  __IOM uint32_t RASR;                   /*!< Offset: 0x010 (R/W)  MPU Region Attribute and Size Register */
+} MPU_Type;
+
+/* MPU Type Register Definitions */
+#define MPU_TYPE_IREGION_Pos               16U                                            /*!< MPU TYPE: IREGION Position */
+#define MPU_TYPE_IREGION_Msk               (0xFFUL << MPU_TYPE_IREGION_Pos)               /*!< MPU TYPE: IREGION Mask */
+
+#define MPU_TYPE_DREGION_Pos                8U                                            /*!< MPU TYPE: DREGION Position */
+#define MPU_TYPE_DREGION_Msk               (0xFFUL << MPU_TYPE_DREGION_Pos)               /*!< MPU TYPE: DREGION Mask */
+
+#define MPU_TYPE_SEPARATE_Pos               0U                                            /*!< MPU TYPE: SEPARATE Position */
+#define MPU_TYPE_SEPARATE_Msk              (1UL /*<< MPU_TYPE_SEPARATE_Pos*/)             /*!< MPU TYPE: SEPARATE Mask */
+
+/* MPU Control Register Definitions */
+#define MPU_CTRL_PRIVDEFENA_Pos             2U                                            /*!< MPU CTRL: PRIVDEFENA Position */
+#define MPU_CTRL_PRIVDEFENA_Msk            (1UL << MPU_CTRL_PRIVDEFENA_Pos)               /*!< MPU CTRL: PRIVDEFENA Mask */
+
+#define MPU_CTRL_HFNMIENA_Pos               1U                                            /*!< MPU CTRL: HFNMIENA Position */
+#define MPU_CTRL_HFNMIENA_Msk              (1UL << MPU_CTRL_HFNMIENA_Pos)                 /*!< MPU CTRL: HFNMIENA Mask */
+
+#define MPU_CTRL_ENABLE_Pos                 0U                                            /*!< MPU CTRL: ENABLE Position */
+#define MPU_CTRL_ENABLE_Msk                (1UL /*<< MPU_CTRL_ENABLE_Pos*/)               /*!< MPU CTRL: ENABLE Mask */
+
+/* MPU Region Number Register Definitions */
+#define MPU_RNR_REGION_Pos                  0U                                            /*!< MPU RNR: REGION Position */
+#define MPU_RNR_REGION_Msk                 (0xFFUL /*<< MPU_RNR_REGION_Pos*/)             /*!< MPU RNR: REGION Mask */
+
+/* MPU Region Base Address Register Definitions */
+#define MPU_RBAR_ADDR_Pos                   8U                                            /*!< MPU RBAR: ADDR Position */
+#define MPU_RBAR_ADDR_Msk                  (0xFFFFFFUL << MPU_RBAR_ADDR_Pos)              /*!< MPU RBAR: ADDR Mask */
+
+#define MPU_RBAR_VALID_Pos                  4U                                            /*!< MPU RBAR: VALID Position */
+#define MPU_RBAR_VALID_Msk                 (1UL << MPU_RBAR_VALID_Pos)                    /*!< MPU RBAR: VALID Mask */
+
+#define MPU_RBAR_REGION_Pos                 0U                                            /*!< MPU RBAR: REGION Position */
+#define MPU_RBAR_REGION_Msk                (0xFUL /*<< MPU_RBAR_REGION_Pos*/)             /*!< MPU RBAR: REGION Mask */
+
+/* MPU Region Attribute and Size Register Definitions */
+#define MPU_RASR_ATTRS_Pos                 16U                                            /*!< MPU RASR: MPU Region Attribute field Position */
+#define MPU_RASR_ATTRS_Msk                 (0xFFFFUL << MPU_RASR_ATTRS_Pos)               /*!< MPU RASR: MPU Region Attribute field Mask */
+
+#define MPU_RASR_XN_Pos                    28U                                            /*!< MPU RASR: ATTRS.XN Position */
+#define MPU_RASR_XN_Msk                    (1UL << MPU_RASR_XN_Pos)                       /*!< MPU RASR: ATTRS.XN Mask */
+
+#define MPU_RASR_AP_Pos                    24U                                            /*!< MPU RASR: ATTRS.AP Position */
+#define MPU_RASR_AP_Msk                    (0x7UL << MPU_RASR_AP_Pos)                     /*!< MPU RASR: ATTRS.AP Mask */
+
+#define MPU_RASR_TEX_Pos                   19U                                            /*!< MPU RASR: ATTRS.TEX Position */
+#define MPU_RASR_TEX_Msk                   (0x7UL << MPU_RASR_TEX_Pos)                    /*!< MPU RASR: ATTRS.TEX Mask */
+
+#define MPU_RASR_S_Pos                     18U                                            /*!< MPU RASR: ATTRS.S Position */
+#define MPU_RASR_S_Msk                     (1UL << MPU_RASR_S_Pos)                        /*!< MPU RASR: ATTRS.S Mask */
+
+#define MPU_RASR_C_Pos                     17U                                            /*!< MPU RASR: ATTRS.C Position */
+#define MPU_RASR_C_Msk                     (1UL << MPU_RASR_C_Pos)                        /*!< MPU RASR: ATTRS.C Mask */
+
+#define MPU_RASR_B_Pos                     16U                                            /*!< MPU RASR: ATTRS.B Position */
+#define MPU_RASR_B_Msk                     (1UL << MPU_RASR_B_Pos)                        /*!< MPU RASR: ATTRS.B Mask */
+
+#define MPU_RASR_SRD_Pos                    8U                                            /*!< MPU RASR: Sub-Region Disable Position */
+#define MPU_RASR_SRD_Msk                   (0xFFUL << MPU_RASR_SRD_Pos)                   /*!< MPU RASR: Sub-Region Disable Mask */
+
+#define MPU_RASR_SIZE_Pos                   1U                                            /*!< MPU RASR: Region Size Field Position */
+#define MPU_RASR_SIZE_Msk                  (0x1FUL << MPU_RASR_SIZE_Pos)                  /*!< MPU RASR: Region Size Field Mask */
+
+#define MPU_RASR_ENABLE_Pos                 0U                                            /*!< MPU RASR: Region enable bit Position */
+#define MPU_RASR_ENABLE_Msk                (1UL /*<< MPU_RASR_ENABLE_Pos*/)               /*!< MPU RASR: Region enable bit Disable Mask */
+
+/*@} end of group CMSIS_MPU */
+#endif
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_CoreDebug       Core Debug Registers (CoreDebug)
+  \brief    Cortex-M0+ Core Debug Registers (DCB registers, SHCSR, and DFSR) are only accessible over DAP and not via processor.
+            Therefore they are not covered by the Cortex-M0+ header file.
+  @{
+ */
+/*@} end of group CMSIS_CoreDebug */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_core_bitfield     Core register bit field macros
+  \brief      Macros for use with bit field definitions (xxx_Pos, xxx_Msk).
+  @{
+ */
+
+/**
+  \brief   Mask and shift a bit field value for use in a register bit range.
+  \param[in] field  Name of the register bit field.
+  \param[in] value  Value of the bit field.
+  \return           Masked and shifted value.
+*/
+#define _VAL2FLD(field, value)    ((value << field ## _Pos) & field ## _Msk)
+
+/**
+  \brief     Mask and shift a register value to extract a bit filed value.
+  \param[in] field  Name of the register bit field.
+  \param[in] value  Value of register.
+  \return           Masked and shifted bit field value.
+*/
+#define _FLD2VAL(field, value)    ((value & field ## _Msk) >> field ## _Pos)
+
+/*@} end of group CMSIS_core_bitfield */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_core_base     Core Definitions
+  \brief      Definitions for base addresses, unions, and structures.
+  @{
+ */
+
+/* Memory mapping of Cortex-M0+ Hardware */
+#define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
+#define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address */
+#define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address */
+#define SCB_BASE            (SCS_BASE +  0x0D00UL)                    /*!< System Control Block Base Address */
+
+#define SCB                 ((SCB_Type       *)     SCB_BASE      )   /*!< SCB configuration struct */
+#define SysTick             ((SysTick_Type   *)     SysTick_BASE  )   /*!< SysTick configuration struct */
+#define NVIC                ((NVIC_Type      *)     NVIC_BASE     )   /*!< NVIC configuration struct */
+
+#if (__MPU_PRESENT == 1U)
+  #define MPU_BASE          (SCS_BASE +  0x0D90UL)                    /*!< Memory Protection Unit */
+  #define MPU               ((MPU_Type       *)     MPU_BASE      )   /*!< Memory Protection Unit */
+#endif
+
+/*@} */
+
+
+
+/*******************************************************************************
+ *                Hardware Abstraction Layer
+  Core Function Interface contains:
+  - Core NVIC Functions
+  - Core SysTick Functions
+  - Core Register Access Functions
+ ******************************************************************************/
+/**
+  \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
+*/
+
+
+
+/* ##########################   NVIC functions  #################################### */
+/**
+  \ingroup  CMSIS_Core_FunctionInterface
+  \defgroup CMSIS_Core_NVICFunctions NVIC Functions
+  \brief    Functions that manage interrupts and exceptions via the NVIC.
+  @{
+ */
+
+/* Interrupt Priorities are WORD accessible only under ARMv6M                   */
+/* The following MACROS handle generation of the register offset and byte masks */
+#define _BIT_SHIFT(IRQn)         (  ((((uint32_t)(int32_t)(IRQn))         )      &  0x03UL) * 8UL)
+#define _SHP_IDX(IRQn)           ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >>    2UL)      )
+#define _IP_IDX(IRQn)            (   (((uint32_t)(int32_t)(IRQn))                >>    2UL)      )
+
+
+/**
+  \brief   Enable External Interrupt
+  \details Enables a device-specific interrupt in the NVIC interrupt controller.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Disable External Interrupt
+  \details Disables a device-specific interrupt in the NVIC interrupt controller.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Get Pending Interrupt
+  \details Reads the pending register in the NVIC and returns the pending bit for the specified interrupt.
+  \param [in]      IRQn  Interrupt number.
+  \return             0  Interrupt status is not pending.
+  \return             1  Interrupt status is pending.
+ */
+__STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
+{
+  return((uint32_t)(((NVIC->ISPR[0U] & (1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
+}
+
+
+/**
+  \brief   Set Pending Interrupt
+  \details Sets the pending bit of an external interrupt.
+  \param [in]      IRQn  Interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Clear Pending Interrupt
+  \details Clears the pending bit of an external interrupt.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Set Interrupt Priority
+  \details Sets the priority of an interrupt.
+  \note    The priority cannot be set for every core interrupt.
+  \param [in]      IRQn  Interrupt number.
+  \param [in]  priority  Priority to set.
+ */
+__STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
+{
+  if ((int32_t)(IRQn) < 0)
+  {
+    SCB->SHP[_SHP_IDX(IRQn)] = ((uint32_t)(SCB->SHP[_SHP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
+       (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
+  }
+  else
+  {
+    NVIC->IP[_IP_IDX(IRQn)]  = ((uint32_t)(NVIC->IP[_IP_IDX(IRQn)]  & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
+       (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
+  }
+}
+
+
+/**
+  \brief   Get Interrupt Priority
+  \details Reads the priority of an interrupt.
+           The interrupt number can be positive to specify an external (device specific) interrupt,
+           or negative to specify an internal (core) interrupt.
+  \param [in]   IRQn  Interrupt number.
+  \return             Interrupt Priority.
+                      Value is aligned automatically to the implemented priority bits of the microcontroller.
+ */
+__STATIC_INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn)
+{
+
+  if ((int32_t)(IRQn) < 0)
+  {
+    return((uint32_t)(((SCB->SHP[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
+  }
+  else
+  {
+    return((uint32_t)(((NVIC->IP[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
+  }
+}
+
+
+/**
+  \brief   System Reset
+  \details Initiates a system reset request to reset the MCU.
+ */
+__STATIC_INLINE void NVIC_SystemReset(void)
+{
+  __DSB();                                                          /* Ensure all outstanding memory accesses included
+                                                                       buffered write are completed before reset */
+  SCB->AIRCR  = ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
+                 SCB_AIRCR_SYSRESETREQ_Msk);
+  __DSB();                                                          /* Ensure completion of memory access */
+
+  for (;;)                                                           /* wait until reset */
+  {
+    __NOP();
+  }
+}
+
+/*@} end of CMSIS_Core_NVICFunctions */
+
+
+
+/* ##################################    SysTick function  ############################################ */
+/**
+  \ingroup  CMSIS_Core_FunctionInterface
+  \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
+  \brief    Functions that configure the System.
+  @{
+ */
+
+#if (__Vendor_SysTickConfig == 0U)
+
+/**
+  \brief   System Tick Configuration
+  \details Initializes the System Timer and its interrupt, and starts the System Tick Timer.
+           Counter is in free running mode to generate periodic interrupts.
+  \param [in]  ticks  Number of ticks between two interrupts.
+  \return          0  Function succeeded.
+  \return          1  Function failed.
+  \note    When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
+           function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
+           must contain a vendor-specific implementation of this function.
+ */
+__STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
+{
+  if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk)
+  {
+    return (1UL);                                                   /* Reload value impossible */
+  }
+
+  SysTick->LOAD  = (uint32_t)(ticks - 1UL);                         /* set reload register */
+  NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */
+  SysTick->VAL   = 0UL;                                             /* Load the SysTick Counter Value */
+  SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
+                   SysTick_CTRL_TICKINT_Msk   |
+                   SysTick_CTRL_ENABLE_Msk;                         /* Enable SysTick IRQ and SysTick Timer */
+  return (0UL);                                                     /* Function successful */
+}
+
+#endif
+
+/*@} end of CMSIS_Core_SysTickFunctions */
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CM0PLUS_H_DEPENDANT */
+
+#endif /* __CMSIS_GENERIC */

src/platform/cm4/cmsis/include/core_cmFunc.h

@@ -0,0 +1,86 @@
+/**************************************************************************//**
+ * @file     core_cmFunc.h
+ * @brief    CMSIS Cortex-M Core Function Access Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMFUNC_H
+#define __CORE_CMFUNC_H
+
+
+/* ###########################  Core Function Access  ########################### */
+/** \ingroup  CMSIS_Core_FunctionInterface
+    \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@} end of CMSIS_Core_RegAccFunctions */
+
+#endif /* __CORE_CMFUNC_H */

src/platform/cm4/cmsis/include/core_cmInstr.h

@@ -0,0 +1,87 @@
+/**************************************************************************//**
+ * @file     core_cmInstr.h
+ * @brief    CMSIS Cortex-M Core Instruction Access Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMINSTR_H
+#define __CORE_CMINSTR_H
+
+
+/* ##########################  Core Instruction Access  ######################### */
+/** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
+  Access to dedicated instructions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@}*/ /* end of group CMSIS_Core_InstructionInterface */
+
+#endif /* __CORE_CMINSTR_H */

src/platform/cm4/cmsis/include/core_cmSimd.h

@@ -0,0 +1,96 @@
+/**************************************************************************//**
+ * @file     core_cmSimd.h
+ * @brief    CMSIS Cortex-M SIMD Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMSIMD_H
+#define __CORE_CMSIMD_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+
+/* ###################  Compiler specific Intrinsics  ########################### */
+/** \defgroup CMSIS_SIMD_intrinsics CMSIS SIMD Intrinsics
+  Access to dedicated SIMD instructions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@} end of group CMSIS_SIMD_intrinsics */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CMSIMD_H */

src/platform/cm4/cmsis/include/core_sc000.h

@@ -0,0 +1,926 @@
+/**************************************************************************//**
+ * @file     core_sc000.h
+ * @brief    CMSIS SC000 Core Peripheral Access Layer Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_SC000_H_GENERIC
+#define __CORE_SC000_H_GENERIC
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/**
+  \page CMSIS_MISRA_Exceptions  MISRA-C:2004 Compliance Exceptions
+  CMSIS violates the following MISRA-C:2004 rules:
+
+   \li Required Rule 8.5, object/function definition in header file.<br>
+     Function definitions in header files are used to allow 'inlining'.
+
+   \li Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br>
+     Unions are used for effective representation of core registers.
+
+   \li Advisory Rule 19.7, Function-like macro defined.<br>
+     Function-like macros are used to allow more efficient code.
+ */
+
+
+/*******************************************************************************
+ *                 CMSIS definitions
+ ******************************************************************************/
+/**
+  \ingroup SC000
+  @{
+ */
+
+/*  CMSIS SC000 definitions */
+#define __SC000_CMSIS_VERSION_MAIN  (0x04U)                                    /*!< [31:16] CMSIS HAL main version */
+#define __SC000_CMSIS_VERSION_SUB   (0x1EU)                                    /*!< [15:0]  CMSIS HAL sub version */
+#define __SC000_CMSIS_VERSION       ((__SC000_CMSIS_VERSION_MAIN << 16U) | \
+                                      __SC000_CMSIS_VERSION_SUB           )    /*!< CMSIS HAL version number */
+
+#define __CORTEX_SC                 (000U)                                     /*!< Cortex secure core */
+
+
+#if   defined ( __CC_ARM )
+  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler */
+  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler */
+  #define __STATIC_INLINE  static __inline
+
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler */
+  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler */
+  #define __STATIC_INLINE  static __inline
+
+#elif defined ( __GNUC__ )
+  #define __ASM            __asm                                      /*!< asm keyword for GNU Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for GNU Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __ICCARM__ )
+  #define __ASM            __asm                                      /*!< asm keyword for IAR Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for IAR Compiler. Only available in High optimization mode! */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __TMS470__ )
+  #define __ASM            __asm                                      /*!< asm keyword for TI CCS Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __TASKING__ )
+  #define __ASM            __asm                                      /*!< asm keyword for TASKING Compiler */
+  #define __INLINE         inline                                     /*!< inline keyword for TASKING Compiler */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __CSMC__ )
+  #define __packed
+  #define __ASM            _asm                                      /*!< asm keyword for COSMIC Compiler */
+  #define __INLINE         inline                                    /*!< inline keyword for COSMIC Compiler. Use -pc99 on compile line */
+  #define __STATIC_INLINE  static inline
+
+#else
+  #error Unknown compiler
+#endif
+
+/** __FPU_USED indicates whether an FPU is used or not.
+    This core does not support an FPU at all
+*/
+#define __FPU_USED       0U
+
+#if defined ( __CC_ARM )
+  #if defined __TARGET_FPU_VFP
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #if defined __ARM_PCS_VFP
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __GNUC__ )
+  #if defined (__VFP_FP__) && !defined(__SOFTFP__)
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __ICCARM__ )
+  #if defined __ARMVFP__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __TMS470__ )
+  #if defined __TI_VFP_SUPPORT__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __TASKING__ )
+  #if defined __FPU_VFP__
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#elif defined ( __CSMC__ )
+  #if ( __CSMC__ & 0x400U)
+    #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+  #endif
+
+#endif
+
+#include "core_cmInstr.h"                /* Core Instruction Access */
+#include "core_cmFunc.h"                 /* Core Function Access */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_SC000_H_GENERIC */
+
+#ifndef __CMSIS_GENERIC
+
+#ifndef __CORE_SC000_H_DEPENDANT
+#define __CORE_SC000_H_DEPENDANT
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* check device defines and use defaults */
+#if defined __CHECK_DEVICE_DEFINES
+  #ifndef __SC000_REV
+    #define __SC000_REV             0x0000U
+    #warning "__SC000_REV not defined in device header file; using default!"
+  #endif
+
+  #ifndef __MPU_PRESENT
+    #define __MPU_PRESENT             0U
+    #warning "__MPU_PRESENT not defined in device header file; using default!"
+  #endif
+
+  #ifndef __NVIC_PRIO_BITS
+    #define __NVIC_PRIO_BITS          2U
+    #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
+  #endif
+
+  #ifndef __Vendor_SysTickConfig
+    #define __Vendor_SysTickConfig    0U
+    #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
+  #endif
+#endif
+
+/* IO definitions (access restrictions to peripheral registers) */
+/**
+    \defgroup CMSIS_glob_defs CMSIS Global Defines
+
+    <strong>IO Type Qualifiers</strong> are used
+    \li to specify the access to peripheral variables.
+    \li for automatic generation of peripheral register debug information.
+*/
+#ifdef __cplusplus
+  #define   __I     volatile             /*!< Defines 'read only' permissions */
+#else
+  #define   __I     volatile const       /*!< Defines 'read only' permissions */
+#endif
+#define     __O     volatile             /*!< Defines 'write only' permissions */
+#define     __IO    volatile             /*!< Defines 'read / write' permissions */
+
+/* following defines should be used for structure members */
+#define     __IM     volatile const      /*! Defines 'read only' structure member permissions */
+#define     __OM     volatile            /*! Defines 'write only' structure member permissions */
+#define     __IOM    volatile            /*! Defines 'read / write' structure member permissions */
+
+/*@} end of group SC000 */
+
+
+
+/*******************************************************************************
+ *                 Register Abstraction
+  Core Register contain:
+  - Core Register
+  - Core NVIC Register
+  - Core SCB Register
+  - Core SysTick Register
+  - Core MPU Register
+ ******************************************************************************/
+/**
+  \defgroup CMSIS_core_register Defines and Type Definitions
+  \brief Type definitions and defines for Cortex-M processor based devices.
+*/
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_CORE  Status and Control Registers
+  \brief      Core Register type definitions.
+  @{
+ */
+
+/**
+  \brief  Union type to access the Application Program Status Register (APSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t _reserved0:28;              /*!< bit:  0..27  Reserved */
+    uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag */
+    uint32_t C:1;                        /*!< bit:     29  Carry condition code flag */
+    uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag */
+    uint32_t N:1;                        /*!< bit:     31  Negative condition code flag */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} APSR_Type;
+
+/* APSR Register Definitions */
+#define APSR_N_Pos                         31U                                            /*!< APSR: N Position */
+#define APSR_N_Msk                         (1UL << APSR_N_Pos)                            /*!< APSR: N Mask */
+
+#define APSR_Z_Pos                         30U                                            /*!< APSR: Z Position */
+#define APSR_Z_Msk                         (1UL << APSR_Z_Pos)                            /*!< APSR: Z Mask */
+
+#define APSR_C_Pos                         29U                                            /*!< APSR: C Position */
+#define APSR_C_Msk                         (1UL << APSR_C_Pos)                            /*!< APSR: C Mask */
+
+#define APSR_V_Pos                         28U                                            /*!< APSR: V Position */
+#define APSR_V_Msk                         (1UL << APSR_V_Pos)                            /*!< APSR: V Mask */
+
+
+/**
+  \brief  Union type to access the Interrupt Program Status Register (IPSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number */
+    uint32_t _reserved0:23;              /*!< bit:  9..31  Reserved */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} IPSR_Type;
+
+/* IPSR Register Definitions */
+#define IPSR_ISR_Pos                        0U                                            /*!< IPSR: ISR Position */
+#define IPSR_ISR_Msk                       (0x1FFUL /*<< IPSR_ISR_Pos*/)                  /*!< IPSR: ISR Mask */
+
+
+/**
+  \brief  Union type to access the Special-Purpose Program Status Registers (xPSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number */
+    uint32_t _reserved0:15;              /*!< bit:  9..23  Reserved */
+    uint32_t T:1;                        /*!< bit:     24  Thumb bit        (read 0) */
+    uint32_t _reserved1:3;               /*!< bit: 25..27  Reserved */
+    uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag */
+    uint32_t C:1;                        /*!< bit:     29  Carry condition code flag */
+    uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag */
+    uint32_t N:1;                        /*!< bit:     31  Negative condition code flag */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} xPSR_Type;
+
+/* xPSR Register Definitions */
+#define xPSR_N_Pos                         31U                                            /*!< xPSR: N Position */
+#define xPSR_N_Msk                         (1UL << xPSR_N_Pos)                            /*!< xPSR: N Mask */
+
+#define xPSR_Z_Pos                         30U                                            /*!< xPSR: Z Position */
+#define xPSR_Z_Msk                         (1UL << xPSR_Z_Pos)                            /*!< xPSR: Z Mask */
+
+#define xPSR_C_Pos                         29U                                            /*!< xPSR: C Position */
+#define xPSR_C_Msk                         (1UL << xPSR_C_Pos)                            /*!< xPSR: C Mask */
+
+#define xPSR_V_Pos                         28U                                            /*!< xPSR: V Position */
+#define xPSR_V_Msk                         (1UL << xPSR_V_Pos)                            /*!< xPSR: V Mask */
+
+#define xPSR_T_Pos                         24U                                            /*!< xPSR: T Position */
+#define xPSR_T_Msk                         (1UL << xPSR_T_Pos)                            /*!< xPSR: T Mask */
+
+#define xPSR_ISR_Pos                        0U                                            /*!< xPSR: ISR Position */
+#define xPSR_ISR_Msk                       (0x1FFUL /*<< xPSR_ISR_Pos*/)                  /*!< xPSR: ISR Mask */
+
+
+/**
+  \brief  Union type to access the Control Registers (CONTROL).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t _reserved0:1;               /*!< bit:      0  Reserved */
+    uint32_t SPSEL:1;                    /*!< bit:      1  Stack to be used */
+    uint32_t _reserved1:30;              /*!< bit:  2..31  Reserved */
+  } b;                                   /*!< Structure used for bit  access */
+  uint32_t w;                            /*!< Type      used for word access */
+} CONTROL_Type;
+
+/* CONTROL Register Definitions */
+#define CONTROL_SPSEL_Pos                   1U                                            /*!< CONTROL: SPSEL Position */
+#define CONTROL_SPSEL_Msk                  (1UL << CONTROL_SPSEL_Pos)                     /*!< CONTROL: SPSEL Mask */
+
+/*@} end of group CMSIS_CORE */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_NVIC  Nested Vectored Interrupt Controller (NVIC)
+  \brief      Type definitions for the NVIC Registers
+  @{
+ */
+
+/**
+  \brief  Structure type to access the Nested Vectored Interrupt Controller (NVIC).
+ */
+typedef struct
+{
+  __IOM uint32_t ISER[1U];               /*!< Offset: 0x000 (R/W)  Interrupt Set Enable Register */
+        uint32_t RESERVED0[31U];
+  __IOM uint32_t ICER[1U];               /*!< Offset: 0x080 (R/W)  Interrupt Clear Enable Register */
+        uint32_t RSERVED1[31U];
+  __IOM uint32_t ISPR[1U];               /*!< Offset: 0x100 (R/W)  Interrupt Set Pending Register */
+        uint32_t RESERVED2[31U];
+  __IOM uint32_t ICPR[1U];               /*!< Offset: 0x180 (R/W)  Interrupt Clear Pending Register */
+        uint32_t RESERVED3[31U];
+        uint32_t RESERVED4[64U];
+  __IOM uint32_t IP[8U];                 /*!< Offset: 0x300 (R/W)  Interrupt Priority Register */
+}  NVIC_Type;
+
+/*@} end of group CMSIS_NVIC */
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_SCB     System Control Block (SCB)
+  \brief    Type definitions for the System Control Block Registers
+  @{
+ */
+
+/**
+  \brief  Structure type to access the System Control Block (SCB).
+ */
+typedef struct
+{
+  __IM  uint32_t CPUID;                  /*!< Offset: 0x000 (R/ )  CPUID Base Register */
+  __IOM uint32_t ICSR;                   /*!< Offset: 0x004 (R/W)  Interrupt Control and State Register */
+  __IOM uint32_t VTOR;                   /*!< Offset: 0x008 (R/W)  Vector Table Offset Register */
+  __IOM uint32_t AIRCR;                  /*!< Offset: 0x00C (R/W)  Application Interrupt and Reset Control Register */
+  __IOM uint32_t SCR;                    /*!< Offset: 0x010 (R/W)  System Control Register */
+  __IOM uint32_t CCR;                    /*!< Offset: 0x014 (R/W)  Configuration Control Register */
+        uint32_t RESERVED0[1U];
+  __IOM uint32_t SHP[2U];                /*!< Offset: 0x01C (R/W)  System Handlers Priority Registers. [0] is RESERVED */
+  __IOM uint32_t SHCSR;                  /*!< Offset: 0x024 (R/W)  System Handler Control and State Register */
+        uint32_t RESERVED1[154U];
+  __IOM uint32_t SFCR;                   /*!< Offset: 0x290 (R/W)  Security Features Control Register */
+} SCB_Type;
+
+/* SCB CPUID Register Definitions */
+#define SCB_CPUID_IMPLEMENTER_Pos          24U                                            /*!< SCB CPUID: IMPLEMENTER Position */
+#define SCB_CPUID_IMPLEMENTER_Msk          (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos)          /*!< SCB CPUID: IMPLEMENTER Mask */
+
+#define SCB_CPUID_VARIANT_Pos              20U                                            /*!< SCB CPUID: VARIANT Position */
+#define SCB_CPUID_VARIANT_Msk              (0xFUL << SCB_CPUID_VARIANT_Pos)               /*!< SCB CPUID: VARIANT Mask */
+
+#define SCB_CPUID_ARCHITECTURE_Pos         16U                                            /*!< SCB CPUID: ARCHITECTURE Position */
+#define SCB_CPUID_ARCHITECTURE_Msk         (0xFUL << SCB_CPUID_ARCHITECTURE_Pos)          /*!< SCB CPUID: ARCHITECTURE Mask */
+
+#define SCB_CPUID_PARTNO_Pos                4U                                            /*!< SCB CPUID: PARTNO Position */
+#define SCB_CPUID_PARTNO_Msk               (0xFFFUL << SCB_CPUID_PARTNO_Pos)              /*!< SCB CPUID: PARTNO Mask */
+
+#define SCB_CPUID_REVISION_Pos              0U                                            /*!< SCB CPUID: REVISION Position */
+#define SCB_CPUID_REVISION_Msk             (0xFUL /*<< SCB_CPUID_REVISION_Pos*/)          /*!< SCB CPUID: REVISION Mask */
+
+/* SCB Interrupt Control State Register Definitions */
+#define SCB_ICSR_NMIPENDSET_Pos            31U                                            /*!< SCB ICSR: NMIPENDSET Position */
+#define SCB_ICSR_NMIPENDSET_Msk            (1UL << SCB_ICSR_NMIPENDSET_Pos)               /*!< SCB ICSR: NMIPENDSET Mask */
+
+#define SCB_ICSR_PENDSVSET_Pos             28U                                            /*!< SCB ICSR: PENDSVSET Position */
+#define SCB_ICSR_PENDSVSET_Msk             (1UL << SCB_ICSR_PENDSVSET_Pos)                /*!< SCB ICSR: PENDSVSET Mask */
+
+#define SCB_ICSR_PENDSVCLR_Pos             27U                                            /*!< SCB ICSR: PENDSVCLR Position */
+#define SCB_ICSR_PENDSVCLR_Msk             (1UL << SCB_ICSR_PENDSVCLR_Pos)                /*!< SCB ICSR: PENDSVCLR Mask */
+
+#define SCB_ICSR_PENDSTSET_Pos             26U                                            /*!< SCB ICSR: PENDSTSET Position */
+#define SCB_ICSR_PENDSTSET_Msk             (1UL << SCB_ICSR_PENDSTSET_Pos)                /*!< SCB ICSR: PENDSTSET Mask */
+
+#define SCB_ICSR_PENDSTCLR_Pos             25U                                            /*!< SCB ICSR: PENDSTCLR Position */
+#define SCB_ICSR_PENDSTCLR_Msk             (1UL << SCB_ICSR_PENDSTCLR_Pos)                /*!< SCB ICSR: PENDSTCLR Mask */
+
+#define SCB_ICSR_ISRPREEMPT_Pos            23U                                            /*!< SCB ICSR: ISRPREEMPT Position */
+#define SCB_ICSR_ISRPREEMPT_Msk            (1UL << SCB_ICSR_ISRPREEMPT_Pos)               /*!< SCB ICSR: ISRPREEMPT Mask */
+
+#define SCB_ICSR_ISRPENDING_Pos            22U                                            /*!< SCB ICSR: ISRPENDING Position */
+#define SCB_ICSR_ISRPENDING_Msk            (1UL << SCB_ICSR_ISRPENDING_Pos)               /*!< SCB ICSR: ISRPENDING Mask */
+
+#define SCB_ICSR_VECTPENDING_Pos           12U                                            /*!< SCB ICSR: VECTPENDING Position */
+#define SCB_ICSR_VECTPENDING_Msk           (0x1FFUL << SCB_ICSR_VECTPENDING_Pos)          /*!< SCB ICSR: VECTPENDING Mask */
+
+#define SCB_ICSR_VECTACTIVE_Pos             0U                                            /*!< SCB ICSR: VECTACTIVE Position */
+#define SCB_ICSR_VECTACTIVE_Msk            (0x1FFUL /*<< SCB_ICSR_VECTACTIVE_Pos*/)       /*!< SCB ICSR: VECTACTIVE Mask */
+
+/* SCB Interrupt Control State Register Definitions */
+#define SCB_VTOR_TBLOFF_Pos                 7U                                            /*!< SCB VTOR: TBLOFF Position */
+#define SCB_VTOR_TBLOFF_Msk                (0x1FFFFFFUL << SCB_VTOR_TBLOFF_Pos)           /*!< SCB VTOR: TBLOFF Mask */
+
+/* SCB Application Interrupt and Reset Control Register Definitions */
+#define SCB_AIRCR_VECTKEY_Pos              16U                                            /*!< SCB AIRCR: VECTKEY Position */
+#define SCB_AIRCR_VECTKEY_Msk              (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos)            /*!< SCB AIRCR: VECTKEY Mask */
+
+#define SCB_AIRCR_VECTKEYSTAT_Pos          16U                                            /*!< SCB AIRCR: VECTKEYSTAT Position */
+#define SCB_AIRCR_VECTKEYSTAT_Msk          (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos)        /*!< SCB AIRCR: VECTKEYSTAT Mask */
+
+#define SCB_AIRCR_ENDIANESS_Pos            15U                                            /*!< SCB AIRCR: ENDIANESS Position */
+#define SCB_AIRCR_ENDIANESS_Msk            (1UL << SCB_AIRCR_ENDIANESS_Pos)               /*!< SCB AIRCR: ENDIANESS Mask */
+
+#define SCB_AIRCR_SYSRESETREQ_Pos           2U                                            /*!< SCB AIRCR: SYSRESETREQ Position */
+#define SCB_AIRCR_SYSRESETREQ_Msk          (1UL << SCB_AIRCR_SYSRESETREQ_Pos)             /*!< SCB AIRCR: SYSRESETREQ Mask */
+
+#define SCB_AIRCR_VECTCLRACTIVE_Pos         1U                                            /*!< SCB AIRCR: VECTCLRACTIVE Position */
+#define SCB_AIRCR_VECTCLRACTIVE_Msk        (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos)           /*!< SCB AIRCR: VECTCLRACTIVE Mask */
+
+/* SCB System Control Register Definitions */
+#define SCB_SCR_SEVONPEND_Pos               4U                                            /*!< SCB SCR: SEVONPEND Position */
+#define SCB_SCR_SEVONPEND_Msk              (1UL << SCB_SCR_SEVONPEND_Pos)                 /*!< SCB SCR: SEVONPEND Mask */
+
+#define SCB_SCR_SLEEPDEEP_Pos               2U                                            /*!< SCB SCR: SLEEPDEEP Position */
+#define SCB_SCR_SLEEPDEEP_Msk              (1UL << SCB_SCR_SLEEPDEEP_Pos)                 /*!< SCB SCR: SLEEPDEEP Mask */
+
+#define SCB_SCR_SLEEPONEXIT_Pos             1U                                            /*!< SCB SCR: SLEEPONEXIT Position */
+#define SCB_SCR_SLEEPONEXIT_Msk            (1UL << SCB_SCR_SLEEPONEXIT_Pos)               /*!< SCB SCR: SLEEPONEXIT Mask */
+
+/* SCB Configuration Control Register Definitions */
+#define SCB_CCR_STKALIGN_Pos                9U                                            /*!< SCB CCR: STKALIGN Position */
+#define SCB_CCR_STKALIGN_Msk               (1UL << SCB_CCR_STKALIGN_Pos)                  /*!< SCB CCR: STKALIGN Mask */
+
+#define SCB_CCR_UNALIGN_TRP_Pos             3U                                            /*!< SCB CCR: UNALIGN_TRP Position */
+#define SCB_CCR_UNALIGN_TRP_Msk            (1UL << SCB_CCR_UNALIGN_TRP_Pos)               /*!< SCB CCR: UNALIGN_TRP Mask */
+
+/* SCB System Handler Control and State Register Definitions */
+#define SCB_SHCSR_SVCALLPENDED_Pos         15U                                            /*!< SCB SHCSR: SVCALLPENDED Position */
+#define SCB_SHCSR_SVCALLPENDED_Msk         (1UL << SCB_SHCSR_SVCALLPENDED_Pos)            /*!< SCB SHCSR: SVCALLPENDED Mask */
+
+/*@} end of group CMSIS_SCB */
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_SCnSCB System Controls not in SCB (SCnSCB)
+  \brief    Type definitions for the System Control and ID Register not in the SCB
+  @{
+ */
+
+/**
+  \brief  Structure type to access the System Control and ID Register not in the SCB.
+ */
+typedef struct
+{
+        uint32_t RESERVED0[2U];
+  __IOM uint32_t ACTLR;                  /*!< Offset: 0x008 (R/W)  Auxiliary Control Register */
+} SCnSCB_Type;
+
+/* Auxiliary Control Register Definitions */
+#define SCnSCB_ACTLR_DISMCYCINT_Pos         0U                                         /*!< ACTLR: DISMCYCINT Position */
+#define SCnSCB_ACTLR_DISMCYCINT_Msk        (1UL /*<< SCnSCB_ACTLR_DISMCYCINT_Pos*/)    /*!< ACTLR: DISMCYCINT Mask */
+
+/*@} end of group CMSIS_SCnotSCB */
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_SysTick     System Tick Timer (SysTick)
+  \brief    Type definitions for the System Timer Registers.
+  @{
+ */
+
+/**
+  \brief  Structure type to access the System Timer (SysTick).
+ */
+typedef struct
+{
+  __IOM uint32_t CTRL;                   /*!< Offset: 0x000 (R/W)  SysTick Control and Status Register */
+  __IOM uint32_t LOAD;                   /*!< Offset: 0x004 (R/W)  SysTick Reload Value Register */
+  __IOM uint32_t VAL;                    /*!< Offset: 0x008 (R/W)  SysTick Current Value Register */
+  __IM  uint32_t CALIB;                  /*!< Offset: 0x00C (R/ )  SysTick Calibration Register */
+} SysTick_Type;
+
+/* SysTick Control / Status Register Definitions */
+#define SysTick_CTRL_COUNTFLAG_Pos         16U                                            /*!< SysTick CTRL: COUNTFLAG Position */
+#define SysTick_CTRL_COUNTFLAG_Msk         (1UL << SysTick_CTRL_COUNTFLAG_Pos)            /*!< SysTick CTRL: COUNTFLAG Mask */
+
+#define SysTick_CTRL_CLKSOURCE_Pos          2U                                            /*!< SysTick CTRL: CLKSOURCE Position */
+#define SysTick_CTRL_CLKSOURCE_Msk         (1UL << SysTick_CTRL_CLKSOURCE_Pos)            /*!< SysTick CTRL: CLKSOURCE Mask */
+
+#define SysTick_CTRL_TICKINT_Pos            1U                                            /*!< SysTick CTRL: TICKINT Position */
+#define SysTick_CTRL_TICKINT_Msk           (1UL << SysTick_CTRL_TICKINT_Pos)              /*!< SysTick CTRL: TICKINT Mask */
+
+#define SysTick_CTRL_ENABLE_Pos             0U                                            /*!< SysTick CTRL: ENABLE Position */
+#define SysTick_CTRL_ENABLE_Msk            (1UL /*<< SysTick_CTRL_ENABLE_Pos*/)           /*!< SysTick CTRL: ENABLE Mask */
+
+/* SysTick Reload Register Definitions */
+#define SysTick_LOAD_RELOAD_Pos             0U                                            /*!< SysTick LOAD: RELOAD Position */
+#define SysTick_LOAD_RELOAD_Msk            (0xFFFFFFUL /*<< SysTick_LOAD_RELOAD_Pos*/)    /*!< SysTick LOAD: RELOAD Mask */
+
+/* SysTick Current Register Definitions */
+#define SysTick_VAL_CURRENT_Pos             0U                                            /*!< SysTick VAL: CURRENT Position */
+#define SysTick_VAL_CURRENT_Msk            (0xFFFFFFUL /*<< SysTick_VAL_CURRENT_Pos*/)    /*!< SysTick VAL: CURRENT Mask */
+
+/* SysTick Calibration Register Definitions */
+#define SysTick_CALIB_NOREF_Pos            31U                                            /*!< SysTick CALIB: NOREF Position */
+#define SysTick_CALIB_NOREF_Msk            (1UL << SysTick_CALIB_NOREF_Pos)               /*!< SysTick CALIB: NOREF Mask */
+
+#define SysTick_CALIB_SKEW_Pos             30U                                            /*!< SysTick CALIB: SKEW Position */
+#define SysTick_CALIB_SKEW_Msk             (1UL << SysTick_CALIB_SKEW_Pos)                /*!< SysTick CALIB: SKEW Mask */
+
+#define SysTick_CALIB_TENMS_Pos             0U                                            /*!< SysTick CALIB: TENMS Position */
+#define SysTick_CALIB_TENMS_Msk            (0xFFFFFFUL /*<< SysTick_CALIB_TENMS_Pos*/)    /*!< SysTick CALIB: TENMS Mask */
+
+/*@} end of group CMSIS_SysTick */
+
+#if (__MPU_PRESENT == 1U)
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_MPU     Memory Protection Unit (MPU)
+  \brief    Type definitions for the Memory Protection Unit (MPU)
+  @{
+ */
+
+/**
+  \brief  Structure type to access the Memory Protection Unit (MPU).
+ */
+typedef struct
+{
+  __IM  uint32_t TYPE;                   /*!< Offset: 0x000 (R/ )  MPU Type Register */
+  __IOM uint32_t CTRL;                   /*!< Offset: 0x004 (R/W)  MPU Control Register */
+  __IOM uint32_t RNR;                    /*!< Offset: 0x008 (R/W)  MPU Region RNRber Register */
+  __IOM uint32_t RBAR;                   /*!< Offset: 0x00C (R/W)  MPU Region Base Address Register */
+  __IOM uint32_t RASR;                   /*!< Offset: 0x010 (R/W)  MPU Region Attribute and Size Register */
+} MPU_Type;
+
+/* MPU Type Register Definitions */
+#define MPU_TYPE_IREGION_Pos               16U                                            /*!< MPU TYPE: IREGION Position */
+#define MPU_TYPE_IREGION_Msk               (0xFFUL << MPU_TYPE_IREGION_Pos)               /*!< MPU TYPE: IREGION Mask */
+
+#define MPU_TYPE_DREGION_Pos                8U                                            /*!< MPU TYPE: DREGION Position */
+#define MPU_TYPE_DREGION_Msk               (0xFFUL << MPU_TYPE_DREGION_Pos)               /*!< MPU TYPE: DREGION Mask */
+
+#define MPU_TYPE_SEPARATE_Pos               0U                                            /*!< MPU TYPE: SEPARATE Position */
+#define MPU_TYPE_SEPARATE_Msk              (1UL /*<< MPU_TYPE_SEPARATE_Pos*/)             /*!< MPU TYPE: SEPARATE Mask */
+
+/* MPU Control Register Definitions */
+#define MPU_CTRL_PRIVDEFENA_Pos             2U                                            /*!< MPU CTRL: PRIVDEFENA Position */
+#define MPU_CTRL_PRIVDEFENA_Msk            (1UL << MPU_CTRL_PRIVDEFENA_Pos)               /*!< MPU CTRL: PRIVDEFENA Mask */
+
+#define MPU_CTRL_HFNMIENA_Pos               1U                                            /*!< MPU CTRL: HFNMIENA Position */
+#define MPU_CTRL_HFNMIENA_Msk              (1UL << MPU_CTRL_HFNMIENA_Pos)                 /*!< MPU CTRL: HFNMIENA Mask */
+
+#define MPU_CTRL_ENABLE_Pos                 0U                                            /*!< MPU CTRL: ENABLE Position */
+#define MPU_CTRL_ENABLE_Msk                (1UL /*<< MPU_CTRL_ENABLE_Pos*/)               /*!< MPU CTRL: ENABLE Mask */
+
+/* MPU Region Number Register Definitions */
+#define MPU_RNR_REGION_Pos                  0U                                            /*!< MPU RNR: REGION Position */
+#define MPU_RNR_REGION_Msk                 (0xFFUL /*<< MPU_RNR_REGION_Pos*/)             /*!< MPU RNR: REGION Mask */
+
+/* MPU Region Base Address Register Definitions */
+#define MPU_RBAR_ADDR_Pos                   8U                                            /*!< MPU RBAR: ADDR Position */
+#define MPU_RBAR_ADDR_Msk                  (0xFFFFFFUL << MPU_RBAR_ADDR_Pos)              /*!< MPU RBAR: ADDR Mask */
+
+#define MPU_RBAR_VALID_Pos                  4U                                            /*!< MPU RBAR: VALID Position */
+#define MPU_RBAR_VALID_Msk                 (1UL << MPU_RBAR_VALID_Pos)                    /*!< MPU RBAR: VALID Mask */
+
+#define MPU_RBAR_REGION_Pos                 0U                                            /*!< MPU RBAR: REGION Position */
+#define MPU_RBAR_REGION_Msk                (0xFUL /*<< MPU_RBAR_REGION_Pos*/)             /*!< MPU RBAR: REGION Mask */
+
+/* MPU Region Attribute and Size Register Definitions */
+#define MPU_RASR_ATTRS_Pos                 16U                                            /*!< MPU RASR: MPU Region Attribute field Position */
+#define MPU_RASR_ATTRS_Msk                 (0xFFFFUL << MPU_RASR_ATTRS_Pos)               /*!< MPU RASR: MPU Region Attribute field Mask */
+
+#define MPU_RASR_XN_Pos                    28U                                            /*!< MPU RASR: ATTRS.XN Position */
+#define MPU_RASR_XN_Msk                    (1UL << MPU_RASR_XN_Pos)                       /*!< MPU RASR: ATTRS.XN Mask */
+
+#define MPU_RASR_AP_Pos                    24U                                            /*!< MPU RASR: ATTRS.AP Position */
+#define MPU_RASR_AP_Msk                    (0x7UL << MPU_RASR_AP_Pos)                     /*!< MPU RASR: ATTRS.AP Mask */
+
+#define MPU_RASR_TEX_Pos                   19U                                            /*!< MPU RASR: ATTRS.TEX Position */
+#define MPU_RASR_TEX_Msk                   (0x7UL << MPU_RASR_TEX_Pos)                    /*!< MPU RASR: ATTRS.TEX Mask */
+
+#define MPU_RASR_S_Pos                     18U                                            /*!< MPU RASR: ATTRS.S Position */
+#define MPU_RASR_S_Msk                     (1UL << MPU_RASR_S_Pos)                        /*!< MPU RASR: ATTRS.S Mask */
+
+#define MPU_RASR_C_Pos                     17U                                            /*!< MPU RASR: ATTRS.C Position */
+#define MPU_RASR_C_Msk                     (1UL << MPU_RASR_C_Pos)                        /*!< MPU RASR: ATTRS.C Mask */
+
+#define MPU_RASR_B_Pos                     16U                                            /*!< MPU RASR: ATTRS.B Position */
+#define MPU_RASR_B_Msk                     (1UL << MPU_RASR_B_Pos)                        /*!< MPU RASR: ATTRS.B Mask */
+
+#define MPU_RASR_SRD_Pos                    8U                                            /*!< MPU RASR: Sub-Region Disable Position */
+#define MPU_RASR_SRD_Msk                   (0xFFUL << MPU_RASR_SRD_Pos)                   /*!< MPU RASR: Sub-Region Disable Mask */
+
+#define MPU_RASR_SIZE_Pos                   1U                                            /*!< MPU RASR: Region Size Field Position */
+#define MPU_RASR_SIZE_Msk                  (0x1FUL << MPU_RASR_SIZE_Pos)                  /*!< MPU RASR: Region Size Field Mask */
+
+#define MPU_RASR_ENABLE_Pos                 0U                                            /*!< MPU RASR: Region enable bit Position */
+#define MPU_RASR_ENABLE_Msk                (1UL /*<< MPU_RASR_ENABLE_Pos*/)               /*!< MPU RASR: Region enable bit Disable Mask */
+
+/*@} end of group CMSIS_MPU */
+#endif
+
+
+/**
+  \ingroup  CMSIS_core_register
+  \defgroup CMSIS_CoreDebug       Core Debug Registers (CoreDebug)
+  \brief    SC000 Core Debug Registers (DCB registers, SHCSR, and DFSR) are only accessible over DAP and not via processor.
+            Therefore they are not covered by the SC000 header file.
+  @{
+ */
+/*@} end of group CMSIS_CoreDebug */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_core_bitfield     Core register bit field macros
+  \brief      Macros for use with bit field definitions (xxx_Pos, xxx_Msk).
+  @{
+ */
+
+/**
+  \brief   Mask and shift a bit field value for use in a register bit range.
+  \param[in] field  Name of the register bit field.
+  \param[in] value  Value of the bit field.
+  \return           Masked and shifted value.
+*/
+#define _VAL2FLD(field, value)    ((value << field ## _Pos) & field ## _Msk)
+
+/**
+  \brief     Mask and shift a register value to extract a bit filed value.
+  \param[in] field  Name of the register bit field.
+  \param[in] value  Value of register.
+  \return           Masked and shifted bit field value.
+*/
+#define _FLD2VAL(field, value)    ((value & field ## _Msk) >> field ## _Pos)
+
+/*@} end of group CMSIS_core_bitfield */
+
+
+/**
+  \ingroup    CMSIS_core_register
+  \defgroup   CMSIS_core_base     Core Definitions
+  \brief      Definitions for base addresses, unions, and structures.
+  @{
+ */
+
+/* Memory mapping of SC000 Hardware */
+#define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
+#define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address */
+#define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address */
+#define SCB_BASE            (SCS_BASE +  0x0D00UL)                    /*!< System Control Block Base Address */
+
+#define SCnSCB              ((SCnSCB_Type    *)     SCS_BASE      )   /*!< System control Register not in SCB */
+#define SCB                 ((SCB_Type       *)     SCB_BASE      )   /*!< SCB configuration struct */
+#define SysTick             ((SysTick_Type   *)     SysTick_BASE  )   /*!< SysTick configuration struct */
+#define NVIC                ((NVIC_Type      *)     NVIC_BASE     )   /*!< NVIC configuration struct */
+
+#if (__MPU_PRESENT == 1U)
+  #define MPU_BASE          (SCS_BASE +  0x0D90UL)                    /*!< Memory Protection Unit */
+  #define MPU               ((MPU_Type       *)     MPU_BASE      )   /*!< Memory Protection Unit */
+#endif
+
+/*@} */
+
+
+
+/*******************************************************************************
+ *                Hardware Abstraction Layer
+  Core Function Interface contains:
+  - Core NVIC Functions
+  - Core SysTick Functions
+  - Core Register Access Functions
+ ******************************************************************************/
+/**
+  \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
+*/
+
+
+
+/* ##########################   NVIC functions  #################################### */
+/**
+  \ingroup  CMSIS_Core_FunctionInterface
+  \defgroup CMSIS_Core_NVICFunctions NVIC Functions
+  \brief    Functions that manage interrupts and exceptions via the NVIC.
+  @{
+ */
+
+/* Interrupt Priorities are WORD accessible only under ARMv6M                   */
+/* The following MACROS handle generation of the register offset and byte masks */
+#define _BIT_SHIFT(IRQn)         (  ((((uint32_t)(int32_t)(IRQn))         )      &  0x03UL) * 8UL)
+#define _SHP_IDX(IRQn)           ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >>    2UL)      )
+#define _IP_IDX(IRQn)            (   (((uint32_t)(int32_t)(IRQn))                >>    2UL)      )
+
+
+/**
+  \brief   Enable External Interrupt
+  \details Enables a device-specific interrupt in the NVIC interrupt controller.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Disable External Interrupt
+  \details Disables a device-specific interrupt in the NVIC interrupt controller.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Get Pending Interrupt
+  \details Reads the pending register in the NVIC and returns the pending bit for the specified interrupt.
+  \param [in]      IRQn  Interrupt number.
+  \return             0  Interrupt status is not pending.
+  \return             1  Interrupt status is pending.
+ */
+__STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
+{
+  return((uint32_t)(((NVIC->ISPR[0U] & (1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
+}
+
+
+/**
+  \brief   Set Pending Interrupt
+  \details Sets the pending bit of an external interrupt.
+  \param [in]      IRQn  Interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Clear Pending Interrupt
+  \details Clears the pending bit of an external interrupt.
+  \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/**
+  \brief   Set Interrupt Priority
+  \details Sets the priority of an interrupt.
+  \note    The priority cannot be set for every core interrupt.
+  \param [in]      IRQn  Interrupt number.
+  \param [in]  priority  Priority to set.
+ */
+__STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
+{
+  if ((int32_t)(IRQn) < 0)
+  {
+    SCB->SHP[_SHP_IDX(IRQn)] = ((uint32_t)(SCB->SHP[_SHP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
+       (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
+  }
+  else
+  {
+    NVIC->IP[_IP_IDX(IRQn)]  = ((uint32_t)(NVIC->IP[_IP_IDX(IRQn)]  & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
+       (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
+  }
+}
+
+
+/**
+  \brief   Get Interrupt Priority
+  \details Reads the priority of an interrupt.
+           The interrupt number can be positive to specify an external (device specific) interrupt,
+           or negative to specify an internal (core) interrupt.
+  \param [in]   IRQn  Interrupt number.
+  \return             Interrupt Priority.
+                      Value is aligned automatically to the implemented priority bits of the microcontroller.
+ */
+__STATIC_INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn)
+{
+
+  if ((int32_t)(IRQn) < 0)
+  {
+    return((uint32_t)(((SCB->SHP[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
+  }
+  else
+  {
+    return((uint32_t)(((NVIC->IP[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
+  }
+}
+
+
+/**
+  \brief   System Reset
+  \details Initiates a system reset request to reset the MCU.
+ */
+__STATIC_INLINE void NVIC_SystemReset(void)
+{
+  __DSB();                                                          /* Ensure all outstanding memory accesses included
+                                                                       buffered write are completed before reset */
+  SCB->AIRCR  = ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
+                 SCB_AIRCR_SYSRESETREQ_Msk);
+  __DSB();                                                          /* Ensure completion of memory access */
+
+  for (;;)                                                           /* wait until reset */
+  {
+    __NOP();
+  }
+}
+
+/*@} end of CMSIS_Core_NVICFunctions */
+
+
+
+/* ##################################    SysTick function  ############################################ */
+/**
+  \ingroup  CMSIS_Core_FunctionInterface
+  \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
+  \brief    Functions that configure the System.
+  @{
+ */
+
+#if (__Vendor_SysTickConfig == 0U)
+
+/**
+  \brief   System Tick Configuration
+  \details Initializes the System Timer and its interrupt, and starts the System Tick Timer.
+           Counter is in free running mode to generate periodic interrupts.
+  \param [in]  ticks  Number of ticks between two interrupts.
+  \return          0  Function succeeded.
+  \return          1  Function failed.
+  \note    When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
+           function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
+           must contain a vendor-specific implementation of this function.
+ */
+__STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
+{
+  if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk)
+  {
+    return (1UL);                                                   /* Reload value impossible */
+  }
+
+  SysTick->LOAD  = (uint32_t)(ticks - 1UL);                         /* set reload register */
+  NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */
+  SysTick->VAL   = 0UL;                                             /* Load the SysTick Counter Value */
+  SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
+                   SysTick_CTRL_TICKINT_Msk   |
+                   SysTick_CTRL_ENABLE_Msk;                         /* Enable SysTick IRQ and SysTick Timer */
+  return (0UL);                                                     /* Function successful */
+}
+
+#endif
+
+/*@} end of CMSIS_Core_SysTickFunctions */
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_SC000_H_DEPENDANT */
+
+#endif /* __CMSIS_GENERIC */

src/platform/cm4/low_level_interrupt.cc

@@ -0,0 +1,28 @@
+#include <cassert>
+
+#include "platform/cm4/InterruptHandler.h"
+#include "platform/cm4/InterruptGuardian.h"
+
+extern "C" {
+    void NMI_Handler(void);
+    void HardFault_Handler(void);
+    void MemoryManagement_Handler(void);
+    void BusFault_Handler(void);
+    void UsageFault_Handler(void);
+    void SVC_Handler(void);
+    void DebugMon_Handler(void);
+    void PendSV_Handler(void);
+    void SysTick_Handler(void);
+}
+
+using namespace pinetime::platform::cm4;
+
+void SysTick_Handler(void)
+{
+    uint32_t irq_nr = InterruptGuardian::SYS_TICK_IRQ;
+    InterruptHandler *h = InterruptGuardian::instance.cm4_vector[irq_nr];
+
+    assert(h != nullptr);
+
+    h->handle();
+}

src/platform/nrf52/InterruptGuardian.cc

@@ -0,0 +1,13 @@
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+
+using namespace pinetime::platform::nrf52;
+
+InterruptGuardian::InterruptGuardian()
+{
+}
+
+void InterruptGuardian::register_handler(Nrf52IrqN irq_nr, InterruptHandler &handler)
+{
+    this->nrf52_vector[irq_nr] = &handler;
+}

src/platform/nrf52/InterruptGuardian.h

@@ -0,0 +1,72 @@
+#ifndef __PINETIME_PLATFORM_NRF52_INTERRUPTGUARDIAN_H__
+#define __PINETIME_PLATFORM_NRF52_INTERRUPTGUARDIAN_H__
+
+#include <array>
+
+extern "C" {
+    #include "nrf52.h"
+}
+
+namespace pinetime::platform::nrf52 {
+
+class InterruptGuardian
+{
+public:
+    InterruptGuardian();
+
+    enum Nrf52IrqN {
+        POWER_CLOCK_IRQ,                       //!< 0 POWER_CLOCK
+        RADIO_IRQ,                             //!< 1 RADIO
+        UARTE0_UART0_IRQ,                      //!< 2 UARTE0_UART0
+        SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQ, //!< 3 SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0
+        SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQ, //!< 4 SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1
+        NFCT_IRQ,                              //!< 5 NFCT
+        GPIOTE_IRQ,                            //!< 6  GPIOTE
+        SAADC_IRQ,                             //!< 7  SAADC
+        TIMER0_IRQ,                            //!< 8  TIMER0
+        TIMER1_IRQ,                            //!< 9  TIMER1
+        TIMER2_IRQ,                            //!< 10 TIMER2
+        RTC0_IRQ,                              //!< 11 RTC0
+        TEMP_IRQ,                              //!< 12 TEMP
+        RNG_IRQ,                               //!< 13 RNG
+        ECB_IRQ,                               //!< 14 ECB
+        CCM_AAR_IRQ,                           //!< 15 CCM_AAR
+        WDT_IRQ,                               //!< 16 WDT
+        RTC1_IRQ,                              //!< 17 RTC1
+        QDEC_IRQ,                              //!< 18 QDEC
+        COMP_LPCOMP_IRQ,                       //!< 19 COMP_LPCOMP
+        SWI0_EGU0_IRQ,                         //!< 20 SWI0_EGU0
+        SWI1_EGU1_IRQ,                         //!< 21 SWI1_EGU1
+        SWI2_EGU2_IRQ,                         //!< 22 SWI2_EGU2
+        SWI3_EGU3_IRQ,                         //!< 23 SWI3_EGU3
+        SWI4_EGU4_IRQ,                         //!< 24 SWI4_EGU4
+        SWI5_EGU5_IRQ,                         //!< 25 SWI5_EGU5
+        TIMER3_IRQ,                            //!< 26 TIMER3
+        TIMER4_IRQ,                            //!< 27 TIMER4
+        PWM0_IRQ,                              //!< 28 PWM0
+        PDM_IRQ,                               //!< 29 PDM
+        MWU_IRQ,                               //!< 32 MWU
+        PWM1_IRQ,                              //!< 33 PWM1
+        PWM2_IRQ,                              //!< 34 PWM2
+        SPIM2_SPIS2_SPI2_IRQ,                  //!< 35 SPIM2_SPIS2_SPI2
+        RTC2_IRQ,                              //!< 36 RTC2
+        I2S_IRQ,                               //!< 37 I2S
+        FPU_IRQ                                //!< 38 FPU
+    };
+
+private:
+    enum {
+        NRF52_HANDLER_COUNT = FPU_IRQn + 1,
+    };
+
+public:
+    void register_handler(Nrf52IrqN irq_nr, InterruptHandler &);
+
+    static InterruptGuardian instance;
+
+    std::array<InterruptHandler *, NRF52_HANDLER_COUNT> nrf52_vector;
+};
+
+}
+
+#endif

src/platform/nrf52/InterruptHandler.cc

@@ -0,0 +1,26 @@
+#include <assert.h>
+
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+
+using namespace pinetime::platform::nrf52;
+
+InterruptHandler::InterruptHandler(uint32_t irq_nr)
+{
+    InterruptGuardian::instance.register_handler(static_cast<InterruptGuardian::Nrf52IrqN>(irq_nr), *this);
+}
+
+void InterruptHandler::handle()
+{
+    assert(false);
+}
+
+void InterruptHandler::enable()
+{
+    assert(false);
+}
+
+void InterruptHandler::disable()
+{
+    assert(false);
+}

src/platform/nrf52/InterruptHandler.h

@@ -0,0 +1,22 @@
+#ifndef __PINETIME_PLATFORM_NRF52_INTERRUPTHANDLER_H__
+#define __PINETIME_PLATFORM_NRF52_INTERRUPTHANDLER_H__
+
+#include <cstdint>
+
+#include "interrupt_interface.h"
+
+namespace pinetime::platform::nrf52 {
+
+class InterruptHandler : public pinetime::interfaces::InterruptHandlerInterface
+{
+    public:
+        InterruptHandler(uint32_t);
+
+        void handle() override;
+        void enable() override;
+        void disable() override;
+};
+
+}
+
+#endif

src/platform/nrf52/gpio.c

@@ -1,82 +0,0 @@
-#include <assert.h>
-#include <fcntl.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#include "platform/narf52/narf52.h"
-#include "platform/narf52/narf52_gpio.h"
-
-#include "gpio.h"
-
-int gpio_open(const struct driver *drv)
-{
-    assert(NULL != drv);
-
-    int res = -1;
-    struct narf52_gpio *this = (struct narf52_gpio *)(drv->dev);
-    struct narf52_gpio_type *reg = (struct narf52_gpio_type *)NARF_P0_BASE;
-
-    reg->PIN_CNF[this->pin_number] = ((uint32_t)(this->dir) << 0)
-                                   | ((uint32_t)(this->input) << 1)
-                                   | ((uint32_t)(this->pull) << 2)
-                                   | ((uint32_t)(this->drive) << 8)
-                                   | ((uint32_t)(this->sense) << 16);
-
-    return res;
-}
-
-int gpio_close(const struct driver *drv)
-{
-    assert(NULL != drv);
-    int res = -1;
-    struct gpio *this = (struct gpio *)(drv->dev);
-    this = this;
-
-    return res;
-}
-
-int gpio_read(const struct driver *drv, char *buffer, unsigned int len)
-{
-    assert((NULL != drv) && (buffer != NULL));
-    if(len == 0) {
-        return 0;
-    }
-    struct narf52_gpio *this = (struct narf52_gpio *)(drv->dev);
-    struct narf52_gpio_type *reg = (struct narf52_gpio_type *)NARF_P0_BASE;
-    uint32_t state = ((reg->IN) >> (this->pin_number) & 1UL);
-    if(state) {
-        buffer[0] = 0x31;
-    } else {
-        buffer[0] = 0x30;
-    }
-    return 1;
-}
-
-int gpio_write(const struct driver *drv, const char *buffer, unsigned int len)
-{
-    assert((NULL != drv) && (buffer != NULL));
-    if(len == 0) {
-        return 0;
-    }
-    struct narf52_gpio *this = (struct narf52_gpio *)(drv->dev);
-    struct narf52_gpio_type *reg = (struct narf52_gpio_type *)NARF_P0_BASE;
-    if(buffer[0] != 0x30) {
-        reg->OUTSET = 1  << (this->pin_number);
-    } else {
-        reg->OUTCLR = 1  << (this->pin_number);
-    }
-
-    return 1;
-}
-
-int gpio_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, va_list args)
-{
-    assert(drv != 0);
-
-    int res = -1;
-    struct gpio *this = (struct gpio *)(drv->dev);
-    this = this;
-
-    return res;
-}

src/platform/nrf52/gpio.cc

@@ -0,0 +1,107 @@
+extern "C" {
+    #include "nrf52.h"
+    #include "nrf52_bitfields.h"
+
+    NRF_GPIO_Type *const GPIO_REGS = reinterpret_cast<NRF_GPIO_Type *>(NRF_P0_BASE);
+    NRF_GPIOTE_Type *const GPIOTE_REGS = reinterpret_cast<NRF_GPIOTE_Type *>(NRF_GPIOTE_BASE);
+}
+
+#include "gpiote.h"
+
+extern pinetime::platform::nrf52::Gpiote gpiote;
+
+#include "platform/nrf52/gpiote.h"
+#include "platform/nrf52/gpio.h"
+
+using namespace pinetime::platform::nrf52;
+
+Gpio::Gpio()
+    : pin(0)
+    , blocking(false)
+    , wait_for_event(false)
+{
+}
+
+Gpio::Gpio(uint32_t pin)
+    : pin(pin)
+    , blocking(false)
+    , wait_for_event(false)
+{
+    this->set_direction(direction::OUT);
+    this->clear();
+}
+
+void Gpio::set_direction(direction dir, bool blocking_read)
+{
+    uint32_t direct = GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos;
+    uint32_t input = GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos;
+    uint32_t pull = GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos;
+    uint32_t drive = GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos;
+    uint32_t sense = GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos;
+    if(dir == direction::IN) {
+        direct = GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos;
+        input = GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos;
+
+        // FIXME: Make this configurable
+        // GPIO_PIN_CNF_PULL_Disabled, ///<  Pin pull-up resistor disabled.
+        // GPIO_PIN_CNF_PULL_Pulldown, ///<  Pin pull-down resistor enabled.
+        // GPIO_PIN_CNF_PULL_Pullup,   ///<  Pin pull-up resistor enabled.
+        pull = GPIO_PIN_CNF_PULL_Pullup  << GPIO_PIN_CNF_PULL_Pos;
+        drive = GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos;
+        sense = GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos;
+
+        gpiote.instance().register_handler(this);
+
+        this->blocking = blocking_read;
+
+        gpiote.instance().enable();
+    }
+    GPIO_REGS->PIN_CNF[pin] = direct | input | pull | drive | sense;
+}
+
+void Gpio::pin_number(uint32_t pin)
+{
+    this->pin = pin;
+}
+
+uint32_t Gpio::pin_number()
+{
+    return this->pin;
+}
+
+uint32_t Gpio::get()
+{
+    if(this->blocking) {
+        this->wait_for_event = true;
+        while(this->wait_for_event == true) {
+            // FIXME: Low Power
+            asm volatile("nop");
+        }
+    }
+    uint32_t res = (GPIO_REGS->IN  >> pin) & 1UL;
+
+    return res;
+}
+
+void Gpio::set()
+{
+    GPIO_REGS->OUTSET = 1UL << (this->pin);
+}
+
+void Gpio::clear()
+{
+    GPIO_REGS->OUTCLR = 1UL << (this->pin);
+}
+
+void Gpio::toggle()
+{
+    uint32_t state = GPIO_REGS->OUT;
+
+    GPIO_REGS->OUTSET = (~state & (1UL << (this->pin)));
+    GPIO_REGS->OUTCLR = (state & (1UL << (this->pin)));
+}
+
+void Gpio::handle()
+{
+    this->wait_for_event = false;
+}

src/platform/nrf52/gpio.h

@@ -0,0 +1,34 @@
+#ifndef __PLATFORM_NRF52_GPIO_H__
+#define __PLATFORM_NRF52_GPIO_H__
+
+#include "gpio_interface.h"
+
+#include "platform/nrf52/InterruptHandler.h"
+
+namespace pinetime::platform::nrf52 {
+
+class Gpio : public pinetime::interfaces::GpioInterface
+{
+public:
+    Gpio();
+    Gpio(uint32_t);
+    void pin_number(uint32_t);
+    uint32_t pin_number() override;
+
+    void set_direction(direction, bool blocking_read=false) override;
+    uint32_t get() override;
+    void set() override;
+    void clear() override;
+    void toggle() override;
+
+    void handle() override;
+
+private:
+    uint32_t pin;
+    bool blocking;
+    volatile bool wait_for_event;
+};
+
+}
+
+#endif

src/platform/nrf52/gpiote.cc

@@ -0,0 +1,77 @@
+#include <cassert>
+
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+
+#include "platform/nrf52/gpiote.h"
+
+extern "C" {
+    #include "nrf52.h"
+    #include "nrf52_bitfields.h"
+
+    NRF_GPIOTE_Type *const GPIOTE_REGS = reinterpret_cast<NRF_GPIOTE_Type *>(NRF_GPIOTE_BASE);
+}
+
+using namespace pinetime::platform::nrf52;
+
+Gpiote::Gpiote()
+    : InterruptHandler(InterruptGuardian::Nrf52IrqN::GPIOTE_IRQ)
+    , num_registered(0)
+{
+    for(auto it = this->gpiote_channels.begin(); it != this->gpiote_channels.end(); ++it) {
+        *it = nullptr;
+    }
+}
+
+void Gpiote::enable()
+{
+    NVIC_SetPriority(GPIOTE_IRQn, 7);
+    NVIC_EnableIRQ(GPIOTE_IRQn);
+}
+
+void Gpiote::disable()
+{
+    NVIC_DisableIRQ(GPIOTE_IRQn);
+}
+
+void Gpiote::register_handler(pinetime::interfaces::GpioInterface *gpio)
+{
+    if(num_registered == GPIOTE_CHANNELS) {
+        //FIXME: Error notification
+        return;
+    }
+
+    if(num_registered == 0) {
+        this->enable();
+    } else {
+        //check if gpio already registered
+        for(auto it = this->gpiote_channels.begin(); it != this->gpiote_channels.end(); ++it) {
+            if(*it == gpio) {
+                return;
+            }
+        }
+    }
+    uint32_t i = 0;
+    for(auto it = this->gpiote_channels.begin(); it != this->gpiote_channels.end(); ++it) {
+        if(*it == nullptr) {
+            *it = gpio;
+            GPIOTE_REGS->INTENSET = GPIOTE_INTENSET_IN0_Msk;
+            GPIOTE_REGS->CONFIG[i] = (GPIOTE_CONFIG_POLARITY_Toggle << GPIOTE_CONFIG_POLARITY_Pos)
+                                   | ((gpio->pin_number()) << GPIOTE_CONFIG_PSEL_Pos)
+                                   | (GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos);
+        }
+        i++;
+    }
+}
+
+void Gpiote::handle()
+{
+    for(uint32_t i = 0; i < GPIOTE_CHANNELS; ++i) {
+        if(GPIOTE_REGS->EVENTS_IN[i] != 0) {
+            GPIOTE_REGS->EVENTS_IN[i] = 0;
+            pinetime::interfaces::GpioInterface *h = this->gpiote_channels[i];
+            assert(h != nullptr);
+            h->handle();
+        }
+    }
+}

src/platform/nrf52/gpiote.h

@@ -0,0 +1,44 @@
+#ifndef __PLATFORM_NRF52_GPIOTE_H__
+#define __PLATFORM_NRF52_GPIOTE_H__
+
+#include <array>
+
+#include "gpio_interface.h"
+#include "platform/nrf52/InterruptHandler.h"
+
+namespace pinetime::platform::nrf52
+{
+class Gpiote;
+}
+extern pinetime::platform::nrf52::Gpiote gpiote;
+
+namespace pinetime::platform::nrf52
+{
+
+class Gpiote
+    : public pinetime::platform::nrf52::InterruptHandler
+{
+public:
+    Gpiote();
+
+    static inline Gpiote & instance() { return gpiote; }
+
+    void enable() override;
+    void disable() override;
+
+    void register_handler(pinetime::interfaces::GpioInterface *);
+
+private:
+    void handle() override;
+
+    enum {
+        GPIOTE_CHANNELS = 8,
+    };
+
+    std::array<pinetime::interfaces::GpioInterface *, GPIOTE_CHANNELS> gpiote_channels;
+    uint32_t num_registered;
+};
+
+}
+
+#endif

src/platform/nrf52/low_level_interrupt.cc

@@ -0,0 +1,66 @@
+#include <cassert>
+
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+
+extern "C" {
+    void POWER_CLOCK_IRQHandler(void);
+    void RADIO_IRQHandler(void);
+    void UARTE0_UART0_IRQHandler(void);
+    void SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler(void);
+    void SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler(void);
+    void NFCT_IRQHandler(void);
+    void GPIOTE_IRQHandler(void);
+    void SAADC_IRQHandler(void);
+    void TIMER0_IRQHandler(void);
+    void TIMER1_IRQHandler(void);
+    void TIMER2_IRQHandler(void);
+    void RTC0_IRQHandler(void);
+    void TEMP_IRQHandler(void);
+    void RNG_IRQHandler(void);
+    void ECB_IRQHandler(void);
+    void CCM_AAR_IRQHandler(void);
+    void WDT_IRQHandler(void);
+    void RTC1_IRQHandler(void);
+    void QDEC_IRQHandler(void);
+    void COMP_LPCOMP_IRQHandler(void);
+    void SWI0_EGU0_IRQHandler(void);
+    void SWI1_EGU1_IRQHandler(void);
+    void SWI2_EGU2_IRQHandler(void);
+    void SWI3_EGU3_IRQHandler(void);
+    void SWI4_EGU4_IRQHandler(void);
+    void SWI5_EGU5_IRQHandler(void);
+    void TIMER3_IRQHandler(void);
+    void TIMER4_IRQHandler(void);
+    void PWM0_IRQHandler(void);
+    void PDM_IRQHandler(void);
+    void MWU_IRQHandler(void);
+    void PWM1_IRQHandler(void);
+    void PWM2_IRQHandler(void);
+    void SPIM2_SPIS2_SPI2_IRQHandler(void);
+    void RTC2_IRQHandler(void);
+    void I2S_IRQHandler(void);
+    void FPU_IRQHandler(void);
+}
+
+using namespace pinetime::platform::nrf52;
+
+void SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler(void)
+{
+    uint32_t irq_nr = InterruptGuardian::Nrf52IrqN::SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQ;
+    InterruptHandler *h = InterruptGuardian::instance.nrf52_vector[irq_nr];
+
+    assert(h != nullptr);
+
+    h->handle();
+}
+
+void GPIOTE_IRQHandler(void)
+{
+    uint32_t irq_nr = InterruptGuardian::Nrf52IrqN::GPIOTE_IRQ;
+    InterruptHandler *h = InterruptGuardian::instance.nrf52_vector[irq_nr];
+
+    assert(h != nullptr);
+
+    h->handle();
+}

src/platform/nrf52/sdk/gcc_startup_nrf52.S

@@ -0,0 +1,404 @@
+/*
+ 
+Copyright (c) 2009-2018 ARM Limited. All rights reserved.
+
+    SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the License); you may
+not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an AS IS BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+NOTICE: This file has been modified by Nordic Semiconductor ASA.
+
+*/
+
+    .syntax unified
+    .arch armv7e-m
+
+#ifdef __STARTUP_CONFIG
+#include "startup_config.h"
+#ifndef __STARTUP_CONFIG_STACK_ALIGNEMENT
+#define __STARTUP_CONFIG_STACK_ALIGNEMENT 3
+#endif
+#endif
+
+    .section .stack
+#if defined(__STARTUP_CONFIG)
+    .align __STARTUP_CONFIG_STACK_ALIGNEMENT
+    .equ    Stack_Size, __STARTUP_CONFIG_STACK_SIZE
+#elif defined(__STACK_SIZE)
+    .align 3
+    .equ    Stack_Size, __STACK_SIZE
+#else
+    .align 3
+    .equ    Stack_Size, 8192
+#endif
+    .globl __StackTop
+    .globl __StackLimit
+__StackLimit:
+    .space Stack_Size
+    .size __StackLimit, . - __StackLimit
+__StackTop:
+    .size __StackTop, . - __StackTop
+
+    .section .heap
+    .align 3
+#if defined(__STARTUP_CONFIG)
+    .equ Heap_Size, __STARTUP_CONFIG_HEAP_SIZE
+#elif defined(__HEAP_SIZE)
+    .equ Heap_Size, __HEAP_SIZE
+#else
+    .equ Heap_Size, 8192
+#endif
+    .globl __HeapBase
+    .globl __HeapLimit
+__HeapBase:
+    .if Heap_Size
+    .space Heap_Size
+    .endif
+    .size __HeapBase, . - __HeapBase
+__HeapLimit:
+    .size __HeapLimit, . - __HeapLimit
+
+    .section .isr_vector
+    .align 2
+    .globl __isr_vector
+__isr_vector:
+    .long   __StackTop                  /* Top of Stack */
+    .long   Reset_Handler
+    .long   NMI_Handler
+    .long   HardFault_Handler
+    .long   MemoryManagement_Handler
+    .long   BusFault_Handler
+    .long   UsageFault_Handler
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   SVC_Handler
+    .long   DebugMon_Handler
+    .long   0                           /*Reserved */
+    .long   PendSV_Handler
+    .long   SysTick_Handler
+
+  /* External Interrupts */
+    .long   POWER_CLOCK_IRQHandler
+    .long   RADIO_IRQHandler
+    .long   UARTE0_UART0_IRQHandler
+    .long   SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler
+    .long   SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler
+    .long   NFCT_IRQHandler
+    .long   GPIOTE_IRQHandler
+    .long   SAADC_IRQHandler
+    .long   TIMER0_IRQHandler
+    .long   TIMER1_IRQHandler
+    .long   TIMER2_IRQHandler
+    .long   RTC0_IRQHandler
+    .long   TEMP_IRQHandler
+    .long   RNG_IRQHandler
+    .long   ECB_IRQHandler
+    .long   CCM_AAR_IRQHandler
+    .long   WDT_IRQHandler
+    .long   RTC1_IRQHandler
+    .long   QDEC_IRQHandler
+    .long   COMP_LPCOMP_IRQHandler
+    .long   SWI0_EGU0_IRQHandler
+    .long   SWI1_EGU1_IRQHandler
+    .long   SWI2_EGU2_IRQHandler
+    .long   SWI3_EGU3_IRQHandler
+    .long   SWI4_EGU4_IRQHandler
+    .long   SWI5_EGU5_IRQHandler
+    .long   TIMER3_IRQHandler
+    .long   TIMER4_IRQHandler
+    .long   PWM0_IRQHandler
+    .long   PDM_IRQHandler
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   MWU_IRQHandler
+    .long   PWM1_IRQHandler
+    .long   PWM2_IRQHandler
+    .long   SPIM2_SPIS2_SPI2_IRQHandler
+    .long   RTC2_IRQHandler
+    .long   I2S_IRQHandler
+    .long   FPU_IRQHandler
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+    .long   0                           /*Reserved */
+
+    .size __isr_vector, . - __isr_vector
+
+/* Reset Handler */
+
+
+    .text
+    .thumb
+    .thumb_func
+    .align 1
+    .globl Reset_Handler
+    .type Reset_Handler, %function
+Reset_Handler:
+
+
+/* Loop to copy data from read only memory to RAM.
+ * The ranges of copy from/to are specified by following symbols:
+ *      __etext: LMA of start of the section to copy from. Usually end of text
+ *      __data_start__: VMA of start of the section to copy to.
+ *      __bss_start__: VMA of end of the section to copy to. Normally __data_end__ is used, but by using __bss_start__
+ *                    the user can add their own initialized data section before BSS section with the INTERT AFTER command.
+ *
+ * All addresses must be aligned to 4 bytes boundary.
+ */
+    ldr r1, =__etext
+    ldr r2, =__data_start__
+    ldr r3, =__bss_start__
+
+    subs r3, r3, r2
+    ble .L_loop1_done
+
+.L_loop1:
+    subs r3, r3, #4
+    ldr r0, [r1,r3]
+    str r0, [r2,r3]
+    bgt .L_loop1
+
+.L_loop1_done:
+
+/* This part of work usually is done in C library startup code. Otherwise,
+ * define __STARTUP_CLEAR_BSS to enable it in this startup. This section
+ * clears the RAM where BSS data is located.
+ *
+ * The BSS section is specified by following symbols
+ *    __bss_start__: start of the BSS section.
+ *    __bss_end__: end of the BSS section.
+ *
+ * All addresses must be aligned to 4 bytes boundary.
+ */
+#ifdef __STARTUP_CLEAR_BSS
+    ldr r1, =__bss_start__
+    ldr r2, =__bss_end__
+
+    movs r0, 0
+
+    subs r2, r2, r1
+    ble .L_loop3_done
+
+.L_loop3:
+    subs r2, r2, #4
+    str r0, [r1, r2]
+    bgt .L_loop3
+
+.L_loop3_done:
+#endif /* __STARTUP_CLEAR_BSS */
+
+/* Execute SystemInit function. */
+    bl SystemInit
+
+/* Call _start function provided by libraries.
+ * If those libraries are not accessible, define __START as your entry point.
+ */
+#ifndef __START
+#define __START _start
+#endif
+    bl __START
+
+    .pool
+    .size   Reset_Handler,.-Reset_Handler
+
+    .section ".text"
+
+
+/* Dummy Exception Handlers (infinite loops which can be modified) */
+
+    .weak   NMI_Handler
+    .type   NMI_Handler, %function
+NMI_Handler:
+    b       .
+    .size   NMI_Handler, . - NMI_Handler
+
+
+    .weak   HardFault_Handler
+    .type   HardFault_Handler, %function
+HardFault_Handler:
+    b       .
+    .size   HardFault_Handler, . - HardFault_Handler
+
+
+    .weak   MemoryManagement_Handler
+    .type   MemoryManagement_Handler, %function
+MemoryManagement_Handler:
+    b       .
+    .size   MemoryManagement_Handler, . - MemoryManagement_Handler
+
+
+    .weak   BusFault_Handler
+    .type   BusFault_Handler, %function
+BusFault_Handler:
+    b       .
+    .size   BusFault_Handler, . - BusFault_Handler
+
+
+    .weak   UsageFault_Handler
+    .type   UsageFault_Handler, %function
+UsageFault_Handler:
+    b       .
+    .size   UsageFault_Handler, . - UsageFault_Handler
+
+
+    .weak   SVC_Handler
+    .type   SVC_Handler, %function
+SVC_Handler:
+    b       .
+    .size   SVC_Handler, . - SVC_Handler
+
+
+    .weak   DebugMon_Handler
+    .type   DebugMon_Handler, %function
+DebugMon_Handler:
+    b       .
+    .size   DebugMon_Handler, . - DebugMon_Handler
+
+
+    .weak   PendSV_Handler
+    .type   PendSV_Handler, %function
+PendSV_Handler:
+    b       .
+    .size   PendSV_Handler, . - PendSV_Handler
+
+
+    .weak   SysTick_Handler
+    .type   SysTick_Handler, %function
+SysTick_Handler:
+    b       .
+    .size   SysTick_Handler, . - SysTick_Handler
+
+
+/* IRQ Handlers */
+
+    .globl  Default_Handler
+    .type   Default_Handler, %function
+Default_Handler:
+    b       .
+    .size   Default_Handler, . - Default_Handler
+
+    .macro  IRQ handler
+    .weak   \handler
+    .set    \handler, Default_Handler
+    .endm
+
+    IRQ  POWER_CLOCK_IRQHandler
+    IRQ  RADIO_IRQHandler
+    IRQ  UARTE0_UART0_IRQHandler
+    IRQ  SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler
+    IRQ  SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler
+    IRQ  NFCT_IRQHandler
+    IRQ  GPIOTE_IRQHandler
+    IRQ  SAADC_IRQHandler
+    IRQ  TIMER0_IRQHandler
+    IRQ  TIMER1_IRQHandler
+    IRQ  TIMER2_IRQHandler
+    IRQ  RTC0_IRQHandler
+    IRQ  TEMP_IRQHandler
+    IRQ  RNG_IRQHandler
+    IRQ  ECB_IRQHandler
+    IRQ  CCM_AAR_IRQHandler
+    IRQ  WDT_IRQHandler
+    IRQ  RTC1_IRQHandler
+    IRQ  QDEC_IRQHandler
+    IRQ  COMP_LPCOMP_IRQHandler
+    IRQ  SWI0_EGU0_IRQHandler
+    IRQ  SWI1_EGU1_IRQHandler
+    IRQ  SWI2_EGU2_IRQHandler
+    IRQ  SWI3_EGU3_IRQHandler
+    IRQ  SWI4_EGU4_IRQHandler
+    IRQ  SWI5_EGU5_IRQHandler
+    IRQ  TIMER3_IRQHandler
+    IRQ  TIMER4_IRQHandler
+    IRQ  PWM0_IRQHandler
+    IRQ  PDM_IRQHandler
+    IRQ  MWU_IRQHandler
+    IRQ  PWM1_IRQHandler
+    IRQ  PWM2_IRQHandler
+    IRQ  SPIM2_SPIS2_SPI2_IRQHandler
+    IRQ  RTC2_IRQHandler
+    IRQ  I2S_IRQHandler
+    IRQ  FPU_IRQHandler
+
+  .end

src/platform/nrf52/sdk/system_nrf52.c

@@ -0,0 +1,376 @@
+/*
+
+Copyright (c) 2009-2018 ARM Limited. All rights reserved.
+
+    SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the License); you may
+not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an AS IS BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+NOTICE: This file has been modified by Nordic Semiconductor ASA.
+
+*/
+
+/* NOTE: Template files (including this one) are application specific and therefore expected to
+   be copied into the application project folder prior to its use! */
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "nrf52.h"
+#include "nrf52_bitfields.h"
+
+#include "system_nrf52.h"
+
+/*lint ++flb "Enter library region" */
+
+#define __SYSTEM_CLOCK_64M      (64000000UL)
+
+static bool errata_12(void);
+static bool errata_16(void);
+static bool errata_31(void);
+static bool errata_32(void);
+static bool errata_36(void);
+static bool errata_37(void);
+static bool errata_57(void);
+static bool errata_66(void);
+static bool errata_108(void);
+static bool errata_136(void);
+static bool errata_182(void);
+
+
+#if defined ( __CC_ARM )
+    uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK_64M;
+#elif defined ( __ICCARM__ )
+    __root uint32_t SystemCoreClock = __SYSTEM_CLOCK_64M;
+#elif defined ( __GNUC__ )
+    uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK_64M;
+#endif
+
+void SystemCoreClockUpdate(void)
+{
+    SystemCoreClock = __SYSTEM_CLOCK_64M;
+}
+
+void SystemInit(void)
+{
+    /* Enable SWO trace functionality. If ENABLE_SWO is not defined, SWO pin will be used as GPIO (see Product
+       Specification to see which one). */
+    #if defined (ENABLE_SWO)
+        CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
+        NRF_CLOCK->TRACECONFIG |= CLOCK_TRACECONFIG_TRACEMUX_Serial << CLOCK_TRACECONFIG_TRACEMUX_Pos;
+        NRF_P0->PIN_CNF[18] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+    #endif
+
+    /* Enable Trace functionality. If ENABLE_TRACE is not defined, TRACE pins will be used as GPIOs (see Product
+       Specification to see which ones). */
+    #if defined (ENABLE_TRACE)
+        CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
+        NRF_CLOCK->TRACECONFIG |= CLOCK_TRACECONFIG_TRACEMUX_Parallel << CLOCK_TRACECONFIG_TRACEMUX_Pos;
+        NRF_P0->PIN_CNF[14] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+        NRF_P0->PIN_CNF[15] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+        NRF_P0->PIN_CNF[16] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+        NRF_P0->PIN_CNF[18] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+        NRF_P0->PIN_CNF[20] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+    #endif
+    
+    /* Workaround for Errata 12 "COMP: Reference ladder not correctly calibrated" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp */
+    if (errata_12()){
+        *(volatile uint32_t *)0x40013540 = (*(uint32_t *)0x10000324 & 0x00001F00) >> 8;
+    }
+    
+    /* Workaround for Errata 16 "System: RAM may be corrupt on wakeup from CPU IDLE" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp */
+    if (errata_16()){
+        *(volatile uint32_t *)0x4007C074 = 3131961357ul;
+    }
+
+    /* Workaround for Errata 31 "CLOCK: Calibration values are not correctly loaded from FICR at reset" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp */
+    if (errata_31()){
+        *(volatile uint32_t *)0x4000053C = ((*(volatile uint32_t *)0x10000244) & 0x0000E000) >> 13;
+    }
+
+    /* Workaround for Errata 32 "DIF: Debug session automatically enables TracePort pins" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp */
+    if (errata_32()){
+        CoreDebug->DEMCR &= ~CoreDebug_DEMCR_TRCENA_Msk;
+    }
+
+    /* Workaround for Errata 36 "CLOCK: Some registers are not reset when expected" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp  */
+    if (errata_36()){
+        NRF_CLOCK->EVENTS_DONE = 0;
+        NRF_CLOCK->EVENTS_CTTO = 0;
+        NRF_CLOCK->CTIV = 0;
+    }
+
+    /* Workaround for Errata 37 "RADIO: Encryption engine is slow by default" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp  */
+    if (errata_37()){
+        *(volatile uint32_t *)0x400005A0 = 0x3;
+    }
+
+    /* Workaround for Errata 57 "NFCT: NFC Modulation amplitude" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp  */
+    if (errata_57()){
+        *(volatile uint32_t *)0x40005610 = 0x00000005;
+        *(volatile uint32_t *)0x40005688 = 0x00000001;
+        *(volatile uint32_t *)0x40005618 = 0x00000000;
+        *(volatile uint32_t *)0x40005614 = 0x0000003F;
+    }
+
+    /* Workaround for Errata 66 "TEMP: Linearity specification not met with default settings" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp  */
+    if (errata_66()){
+        NRF_TEMP->A0 = NRF_FICR->TEMP.A0;
+        NRF_TEMP->A1 = NRF_FICR->TEMP.A1;
+        NRF_TEMP->A2 = NRF_FICR->TEMP.A2;
+        NRF_TEMP->A3 = NRF_FICR->TEMP.A3;
+        NRF_TEMP->A4 = NRF_FICR->TEMP.A4;
+        NRF_TEMP->A5 = NRF_FICR->TEMP.A5;
+        NRF_TEMP->B0 = NRF_FICR->TEMP.B0;
+        NRF_TEMP->B1 = NRF_FICR->TEMP.B1;
+        NRF_TEMP->B2 = NRF_FICR->TEMP.B2;
+        NRF_TEMP->B3 = NRF_FICR->TEMP.B3;
+        NRF_TEMP->B4 = NRF_FICR->TEMP.B4;
+        NRF_TEMP->B5 = NRF_FICR->TEMP.B5;
+        NRF_TEMP->T0 = NRF_FICR->TEMP.T0;
+        NRF_TEMP->T1 = NRF_FICR->TEMP.T1;
+        NRF_TEMP->T2 = NRF_FICR->TEMP.T2;
+        NRF_TEMP->T3 = NRF_FICR->TEMP.T3;
+        NRF_TEMP->T4 = NRF_FICR->TEMP.T4;
+    }
+
+    /* Workaround for Errata 108 "RAM: RAM content cannot be trusted upon waking up from System ON Idle or System OFF mode" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp  */
+    if (errata_108()){
+        *(volatile uint32_t *)0x40000EE4ul = *(volatile uint32_t *)0x10000258ul & 0x0000004Ful;
+    }
+    
+    /* Workaround for Errata 136 "System: Bits in RESETREAS are set when they should not be" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp  */
+    if (errata_136()){
+        if (NRF_POWER->RESETREAS & POWER_RESETREAS_RESETPIN_Msk){
+            NRF_POWER->RESETREAS =  ~POWER_RESETREAS_RESETPIN_Msk;
+        }
+    }
+    
+    /* Workaround for Errata 182 "RADIO: Fixes for anomalies #102, #106, and #107 do not take effect" found at the Errata document
+       for your device located at https://infocenter.nordicsemi.com/index.jsp  */
+    if (errata_182()){
+        *(volatile uint32_t *) 0x4000173C |= (0x1 << 10);
+    }
+    
+    /* Enable the FPU if the compiler used floating point unit instructions. __FPU_USED is a MACRO defined by the
+     * compiler. Since the FPU consumes energy, remember to disable FPU use in the compiler if floating point unit
+     * operations are not used in your code. */
+    #if (__FPU_USED == 1)
+        SCB->CPACR |= (3UL << 20) | (3UL << 22);
+        __DSB();
+        __ISB();
+    #endif
+
+    /* Configure NFCT pins as GPIOs if NFCT is not to be used in your code. If CONFIG_NFCT_PINS_AS_GPIOS is not defined,
+       two GPIOs (see Product Specification to see which ones) will be reserved for NFC and will not be available as
+       normal GPIOs. */
+    #if defined (CONFIG_NFCT_PINS_AS_GPIOS)
+        if ((NRF_UICR->NFCPINS & UICR_NFCPINS_PROTECT_Msk) == (UICR_NFCPINS_PROTECT_NFC << UICR_NFCPINS_PROTECT_Pos)){
+            NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;
+            while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
+            NRF_UICR->NFCPINS &= ~UICR_NFCPINS_PROTECT_Msk;
+            while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
+            NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos;
+            while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
+            NVIC_SystemReset();
+        }
+    #endif
+
+    /* Configure GPIO pads as pPin Reset pin if Pin Reset capabilities desired. If CONFIG_GPIO_AS_PINRESET is not
+      defined, pin reset will not be available. One GPIO (see Product Specification to see which one) will then be
+      reserved for PinReset and not available as normal GPIO. */
+    #if defined (CONFIG_GPIO_AS_PINRESET)
+        if (((NRF_UICR->PSELRESET[0] & UICR_PSELRESET_CONNECT_Msk) != (UICR_PSELRESET_CONNECT_Connected << UICR_PSELRESET_CONNECT_Pos)) ||
+            ((NRF_UICR->PSELRESET[1] & UICR_PSELRESET_CONNECT_Msk) != (UICR_PSELRESET_CONNECT_Connected << UICR_PSELRESET_CONNECT_Pos))){
+            NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;
+            while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
+            NRF_UICR->PSELRESET[0] = 21;
+            while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
+            NRF_UICR->PSELRESET[1] = 21;
+            while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
+            NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos;
+            while (NRF_NVMC->READY == NVMC_READY_READY_Busy){}
+            NVIC_SystemReset();
+        }
+    #endif
+
+    SystemCoreClockUpdate();
+}
+
+
+static bool errata_12(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x40){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x50){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static bool errata_16(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static bool errata_31(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x40){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x50){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static bool errata_32(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static bool errata_36(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x40){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x50){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static bool errata_37(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static bool errata_57(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static bool errata_66(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x50){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
+static bool errata_108(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x40){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x50){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
+static bool errata_136(void)
+{
+    if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x6) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)){
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x40){
+            return true;
+        }
+        if (((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x50){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
+static bool errata_182(void)
+{
+    if (*(uint32_t *)0x10000130ul == 0x6ul){
+        if (*(uint32_t *)0x10000134ul == 0x6ul){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
+/*lint --flb "Leave library region" */

src/platform/nrf52/sdk/system_nrf52.h

@@ -0,0 +1,61 @@
+/*
+
+Copyright (c) 2009-2018 ARM Limited. All rights reserved.
+
+    SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the License); you may
+not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an AS IS BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+NOTICE: This file has been modified by Nordic Semiconductor ASA.
+
+*/
+
+#ifndef SYSTEM_NRF52_H
+#define SYSTEM_NRF52_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+
+extern uint32_t SystemCoreClock;    /*!< System Clock Frequency (Core Clock)  */
+
+/**
+ * Initialize the system
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Setup the microcontroller system.
+ *         Initialize the System and update the SystemCoreClock variable.
+ */
+extern void SystemInit (void);
+
+/**
+ * Update SystemCoreClock variable
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Updates the SystemCoreClock with current core Clock 
+ *         retrieved from cpu registers.
+ */
+extern void SystemCoreClockUpdate (void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SYSTEM_NRF_H */

src/platform/nrf52/spi.cc

@@ -0,0 +1,130 @@
+#include <assert.h>
+
+#include "platform/nrf52/InterruptHandler.h"
+#include "platform/nrf52/InterruptGuardian.h"
+
+#include "platform/nrf52/spi.h"
+
+extern "C" {
+    #include "nrf52.h"
+    #include "nrf52_bitfields.h"
+
+    NRF_GPIO_Type *const GPIO_REGS = reinterpret_cast<NRF_GPIO_Type *>(NRF_P0_BASE);
+    NRF_SPIM_Type *SPIM_REGS = reinterpret_cast<NRF_SPIM_Type *>(NRF_SPIM0_BASE);
+}
+
+using namespace pinetime::platform::nrf52;
+
+Spi::Spi(uint32_t instance, uint32_t sck, uint32_t mosi, uint32_t miso, pinetime::interfaces::GpioInterface & cs)
+    : InterruptHandler(InterruptGuardian::Nrf52IrqN::SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQ)
+    , chip_select(cs)
+    , xfer_active(false)
+{
+    assert(instance < 3);
+
+    // sck pin
+    GPIO_REGS->OUTCLR = 1UL << sck;
+    GPIO_REGS->PIN_CNF[mosi] = GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos
+                             | GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos
+                             | GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos
+                             | GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos
+                             | GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos;
+    // mosi pin
+    GPIO_REGS->OUTCLR = 1UL << mosi;
+    GPIO_REGS->PIN_CNF[mosi] = GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos
+                             | GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos
+                             | GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos
+                             | GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos
+                             | GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos;
+    // miso pin
+    GPIO_REGS->PIN_CNF[miso] = GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos
+                             | GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos
+                             | GPIO_PIN_CNF_PULL_Pulldown << GPIO_PIN_CNF_PULL_Pos
+                             | GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos
+                             | GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos;
+    // ss already configured by gpio driver
+
+    IRQn_Type irq = SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn;
+    if(instance == 2) {
+        SPIM_REGS = reinterpret_cast<NRF_SPIM_Type *>(NRF_SPIM2_BASE);
+        irq = SPIM2_SPIS2_SPI2_IRQn;
+    } else if(instance == 1) {
+        SPIM_REGS = reinterpret_cast<NRF_SPIM_Type *>(NRF_SPIM1_BASE);
+        irq = SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn;
+    } else {
+        SPIM_REGS = reinterpret_cast<NRF_SPIM_Type *>(NRF_SPIM0_BASE);
+        irq = SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn;
+    }
+
+    this->chip_select.set();
+
+    SPIM_REGS->ENABLE = 0;
+    SPIM_REGS->PSEL.SCK = sck;
+    SPIM_REGS->PSEL.MOSI = mosi;
+    SPIM_REGS->PSEL.MISO = miso;
+    SPIM_REGS->FREQUENCY = SPI_FREQUENCY_FREQUENCY_M8;
+
+    SPIM_REGS->CONFIG = (0x03 << 1); //Sample on trailing edge of clock, shift serial data on leading edge, SCK polarity Active low
+    SPIM_REGS->EVENTS_ENDRX = 0;
+    SPIM_REGS->EVENTS_ENDTX = 0;
+    SPIM_REGS->EVENTS_END = 0;
+
+    SPIM_REGS->INTENSET = (1 << 1)      // Stopped
+                        | (1 << 6)      // End
+                        | (1 << 19);    // Started
+
+    SPIM_REGS->ENABLE = (SPIM_ENABLE_ENABLE_Enabled << SPIM_ENABLE_ENABLE_Pos);
+
+    NVIC_SetPriority(irq, 2);
+    NVIC_EnableIRQ(irq);
+}
+
+Spi::~Spi()
+{
+    SPIM_REGS->ENABLE = 0;
+}
+
+void Spi::send(const uint8_t * buffer, uint32_t len)
+{
+    this->chip_select.clear();
+    this->xfer_active = true;
+
+    SPIM_REGS->TXD.PTR = reinterpret_cast<uint32_t>(buffer);
+    SPIM_REGS->TXD.MAXCNT = len;
+    SPIM_REGS->TXD.LIST = 0;
+
+    SPIM_REGS->RXD.PTR = 0;
+    SPIM_REGS->RXD.MAXCNT = 0;
+    SPIM_REGS->RXD.LIST = 0;
+
+    SPIM_REGS->EVENTS_END = 0;
+
+    SPIM_REGS->TASKS_START = 1;
+
+    // FIXME: LOW POWER???
+    while(this->xfer_active);
+
+    this->chip_select.set();
+}
+
+void Spi::recv(uint8_t * buffer, uint32_t len)
+{
+    // FIXME: not implemented yet
+}
+
+void Spi::handle()
+{
+    if((SPIM_REGS->INTENSET & (1 << 6)) && (SPIM_REGS->EVENTS_END == 1)) {
+        SPIM_REGS->EVENTS_END = 0;
+        this->xfer_active = false;
+    }
+
+    if((SPIM_REGS->INTENSET & (1 << 19)) && (SPIM_REGS->EVENTS_STARTED == 1)) {
+        SPIM_REGS->EVENTS_STARTED = 0;
+    }
+
+    if((SPIM_REGS->INTENSET & (1 << 1)) && (SPIM_REGS->EVENTS_STOPPED == 1)) {
+        SPIM_REGS->EVENTS_STOPPED = 0;
+        this->xfer_active = false;
+    }
+}

src/platform/nrf52/spi.h

@@ -0,0 +1,32 @@
+#ifndef __PLATFORM_NRF52_SPI_H__
+#define __PLATFORM_NRF52_SPI_H__
+
+#include "gpio_interface.h"
+#include "spi_interface.h"
+
+#include "platform/nrf52/InterruptHandler.h"
+
+namespace pinetime::platform::nrf52 {
+
+class Spi
+    : public pinetime::platform::nrf52::InterruptHandler
+    , public pinetime::interfaces::SpiInterface
+{
+public:
+    Spi(uint32_t instance, uint32_t sck, uint32_t mosi, uint32_t miso, pinetime::interfaces::GpioInterface & cs);
+    ~Spi();
+    void send(const uint8_t * buffer, uint32_t len) override;
+    void recv(uint8_t * buffer, uint32_t len) override;
+
+private:
+    uint32_t transfer(uint32_t);
+
+    void handle() override;
+
+    pinetime::interfaces::GpioInterface & chip_select;
+    volatile bool xfer_active;
+};
+
+}
+
+#endif

src/st7789.cc

@@ -0,0 +1,154 @@
+#include <array>
+#include <cstdint>
+
+#include "st7789.h"
+
+St7789::St7789(pinetime::interfaces::SpiInterface & spi_if,
+               pinetime::interfaces::GpioInterface & rst,
+               pinetime::interfaces::GpioInterface & dc,
+               pinetime::interfaces::GpioInterface & bl)
+    : spi(spi_if)
+    , reset(rst)
+    , data_command(dc)
+    , backlight(bl)
+{
+    this->reset.set();
+    this->data_command.set();
+    this->backlight.set();
+
+    // hard reset
+    this->reset.clear();
+    // FIXME: add proper delay
+    // delay_ms(100);
+    for(volatile uint32_t cnt = 0; cnt < 100; ++cnt);
+    this->reset.set();
+    // FIXME: add proper delay
+    // delay_ms(100);
+    for(volatile uint32_t cnt = 0; cnt < 100; ++cnt);
+}
+
+void St7789::init()
+{
+    send_cmd(0x36);
+    send_data(0x00);
+
+    send_cmd(0x3A);
+    send_data(0x05);
+
+    send_cmd(0xB2);
+    send_data(0x0C);
+    send_data(0x0C);
+    send_data(0x00);
+    send_data(0x33);
+    send_data(0x33);
+
+    send_cmd(0xB7);  //Gate Control
+    send_data(0x35);
+
+    send_cmd(0xBB);  //VCOM Setting
+    send_data(0x19);
+
+    send_cmd(0xC0); //LCM Control
+    send_data(0x2C);
+
+    send_cmd(0xC2);  //VDV and VRH Command Enable
+    send_data(0x01);
+    send_cmd(0xC3);  //VRH Set
+    send_data(0x12);
+    send_cmd(0xC4);  //VDV Set
+    send_data(0x20);
+
+    send_cmd(0xC6);  //Frame Rate Control in Normal Mode
+    send_data(0x0F);
+    
+    send_cmd(0xD0);  // Power Control 1
+    send_data(0xA4);
+    send_data(0xA1);
+
+    send_cmd(0xE0);  //Positive Voltage Gamma Control
+    send_data(0xD0);
+    send_data(0x04);
+    send_data(0x0D);
+    send_data(0x11);
+    send_data(0x13);
+    send_data(0x2B);
+    send_data(0x3F);
+    send_data(0x54);
+    send_data(0x4C);
+    send_data(0x18);
+    send_data(0x0D);
+    send_data(0x0B);
+    send_data(0x1F);
+    send_data(0x23);
+
+    send_cmd(0xE1);  //Negative Voltage Gamma Control
+    send_data(0xD0);
+    send_data(0x04);
+    send_data(0x0C);
+    send_data(0x11);
+    send_data(0x13);
+    send_data(0x2C);
+    send_data(0x3F);
+    send_data(0x44);
+    send_data(0x51);
+    send_data(0x2F);
+    send_data(0x1F);
+    send_data(0x1F);
+    send_data(0x20);
+    send_data(0x23);
+
+    send_cmd(0x21);  //Display Inversion On
+    send_cmd(0x11);  //Sleep Out
+    send_cmd(0x29);  //Display On
+}
+
+void St7789::send_cmd(uint8_t cmd)
+{
+    this->data_command.clear();
+    this->spi.send(&cmd, 1);
+}
+
+void St7789::send_data(uint8_t data)
+{
+    this->data_command.set();
+    this->spi.send(&data, 1);
+}
+
+void St7789::clear(uint16_t Color)
+{
+    unsigned int odd = 0;
+    std::array<uint8_t, 240> line;
+    for(auto it = line.begin(); it != line.end(); ++it) {
+        if(odd % 2 == 0) {
+            *it = static_cast<uint8_t>((Color >> 8) & 0xff);
+        } else {
+            *it = static_cast<uint8_t>(Color & 0xff);
+        }
+        odd++;
+    }
+
+    set_windows(0, 0, 240, 240);
+    this->data_command.set();
+    for(unsigned int i = 0; i < 240 * 2; i++) {
+        this->spi.send(line.data(), line.size());
+    }
+}
+
+void St7789::set_windows(uint16_t x_start, uint16_t y_start, uint16_t x_end, uint16_t y_end)
+{
+    //set the X coordinates
+    send_cmd(0x2A);
+    send_data((x_start >> 8) & 0xFF);
+    send_data(x_start & 0xFF);
+    send_data(((x_end  - 1) >> 8) & 0xFF);
+    send_data((x_end  - 1) & 0xFF);
+
+    //set the Y coordinates
+    send_cmd(0x2B);
+    send_data((y_start >> 8) & 0xFF);
+    send_data(y_start & 0xFF);
+    send_data(((y_end  - 1) >> 8) & 0xFF);
+    send_data((y_end  - 1) & 0xFF);
+
+    send_cmd(0X2C);
+}

src/st7789.h

@@ -0,0 +1,30 @@
+#ifndef __ST7789_H__
+#define __ST7789_H__
+
+#include <cstdint>
+#include "gpio_interface.h"
+#include "spi_interface.h"
+
+class St7789
+{
+public:
+    St7789(pinetime::interfaces::SpiInterface &,
+           pinetime::interfaces::GpioInterface &,
+           pinetime::interfaces::GpioInterface &,
+           pinetime::interfaces::GpioInterface &);
+
+    void init();
+    void clear(uint16_t Color);
+
+private:
+    pinetime::interfaces::SpiInterface & spi;
+    pinetime::interfaces::GpioInterface & reset;
+    pinetime::interfaces::GpioInterface & data_command;
+    pinetime::interfaces::GpioInterface & backlight;
+
+    void send_cmd(uint8_t);
+    void send_data(uint8_t);
+    void set_windows(uint16_t x_start, uint16_t y_start, uint16_t x_end, uint16_t y_end);
+};
+
+#endif

src/virtual_timer/VirtualTimer.cc

@@ -0,0 +1,38 @@
+#include "virtual_timer/VirtualTimerDistributor.h"
+#include "virtual_timer/VirtualTimer.h"
+
+using namespace pinetime::virtual_timer;
+
+VirtualTimer::VirtualTimer(uint64_t period_ms)
+    : period(period_ms)
+{
+}
+
+void VirtualTimer::timer_enable()
+{
+    VirtualTimerDistributor & distri = VirtualTimerDistributor::instance();
+    this->start_time = distri.tick();
+    distri.register_timer(this);
+}
+
+void VirtualTimer::timer_disable()
+{
+    VirtualTimerDistributor::instance().unregister_timer(this);
+}
+
+void VirtualTimer::timer_notification(uint64_t tick_ms)
+{
+    if((tick_ms - this->start_time) >= (this->period)) {
+        this->notification();
+    }
+}
+
+void VirtualTimer::timer_set_period_ms(uint64_t period_ms)
+{
+    this->period = period_ms;
+}
+
+// void VirtualTimer::notify()
+// {
+//     asm volatile("nop");
+// }

src/virtual_timer/VirtualTimer.h

@@ -0,0 +1,30 @@
+#ifndef __VIRTUAL_TIMER_VIRTUALTIMER_H__
+#define __VIRTUAL_TIMER_VIRTUALTIMER_H__
+
+#include "VirtualTimerInterface.h"
+
+namespace pinetime::virtual_timer
+{
+
+class VirtualTimer
+    : public pinetime::interfaces::VirtualTimerInterface
+{
+public:
+    VirtualTimer(uint64_t);
+
+    void timer_enable() override;
+    void timer_disable() override;
+    void timer_notification(uint64_t) override;
+
+    void timer_set_period_ms(uint64_t);
+
+    virtual void notification() = 0;
+
+private:
+    uint64_t period;
+    uint64_t start_time;
+};
+
+}
+
+#endif

src/virtual_timer/VirtualTimerDistributor.cc

@@ -0,0 +1,80 @@
+#include "virtual_timer/VirtualTimer.h"
+#include "virtual_timer/VirtualTimerDistributor.h"
+
+using namespace pinetime::virtual_timer;
+using namespace pinetime::interfaces;
+
+VirtualTimerDistributor::VirtualTimerDistributor(pinetime::interfaces::HwTimerInterface & timer)
+    : hw_timer(timer)
+    , num_registered_timers(0)
+{
+    for(auto it = this->virtual_timer_list.begin(); it != this->virtual_timer_list.end(); ++it) {
+        *it = nullptr;
+    }
+}
+
+void VirtualTimerDistributor::register_timer(VirtualTimerInterface *timer)
+{
+    volatile bool enable = false;
+    if(num_registered_timers == MAX_TIMERS) {
+        // FIXME: Error notification
+        return;
+    }
+    if(num_registered_timers == 0) {
+        // Timer list is empty - so - hw timer isn't running
+        enable = true;
+    } else {
+        // Check if timer already registered
+        for(auto it = this->virtual_timer_list.begin(); it != this->virtual_timer_list.end(); ++it) {
+            if(*it == timer) {
+                return;
+            }
+        }
+    }
+    for(auto it = this->virtual_timer_list.begin(); it != this->virtual_timer_list.end(); ++it) {
+        if(*it == nullptr) {
+            // FIXME: We might need an interrupt lock here?
+            *it = timer;
+            num_registered_timers++;
+            break;
+        }
+    }
+    if(enable) {
+        hw_timer.enable_timer();
+    }
+}
+
+void VirtualTimerDistributor::unregister_timer(VirtualTimerInterface *timer)
+{
+    if(num_registered_timers == 0) {
+        // FIXME: Error notification
+        return;
+    }
+    for(auto it = this->virtual_timer_list.begin(); it != this->virtual_timer_list.end(); ++it) {
+        if(*it == timer) {
+            // FIXME: We might need an interrupt lock here?
+            *it = nullptr;
+            num_registered_timers--;
+            break;
+        }
+    }
+    if(num_registered_timers == 0) {
+        hw_timer.disable_timer();
+    }
+}
+
+void VirtualTimerDistributor::notify(uint64_t time_ms)
+{
+    // FIXME: We're still in interrupt context of hw timer interrupt.
+    for(auto it = this->virtual_timer_list.begin(); it != this->virtual_timer_list.end(); ++it) {
+        if(*it != nullptr) {
+            VirtualTimerInterface *vt = *it;
+            vt->timer_notification(time_ms);
+        }
+    }
+}
+
+uint64_t VirtualTimerDistributor::tick()
+{
+    return hw_timer.tick();
+}

src/virtual_timer/VirtualTimerDistributor.h

@@ -0,0 +1,41 @@
+#ifndef __VIRTUAL_TIMER_VIRTUALTIMERDISTRIBUTOR_H__
+#define __VIRTUAL_TIMER_VIRTUALTIMERDISTRIBUTOR_H__
+
+#include <array>
+
+#include "HwTimerInterface.h"
+#include "VirtualTimerInterface.h"
+
+namespace pinetime::virtual_timer
+{
+class VirtualTimerDistributor;
+}
+extern pinetime::virtual_timer::VirtualTimerDistributor virtual_timer_distributor;
+
+namespace pinetime::virtual_timer
+{
+
+class VirtualTimerDistributor
+{
+    public:
+        VirtualTimerDistributor(pinetime::interfaces::HwTimerInterface &);
+
+        static inline VirtualTimerDistributor& instance() { return virtual_timer_distributor; }
+
+        void register_timer(pinetime::interfaces::VirtualTimerInterface *);
+        void unregister_timer(pinetime::interfaces::VirtualTimerInterface *);
+
+        void notify(uint64_t);
+        uint64_t tick();
+
+    private:
+        static const uint32_t MAX_TIMERS = 8;
+
+        std::array<pinetime::interfaces::VirtualTimerInterface *, MAX_TIMERS> virtual_timer_list;
+        pinetime::interfaces::HwTimerInterface & hw_timer;
+        uint32_t num_registered_timers;
+};
+
+}
+
+#endif