Initial commit

Signed-off-by: Thomas Klaehn <thomas.klaehn@perinet.io>

Makefile

@@ -0,0 +1,112 @@
+TARGET = firmware
+
+DEBUG = 1
+OPT = -O0
+
+BUILD_DIR = build
+
+C_SOURCES =  \
+Core/Src/main.c \
+Core/Src/stm32g0xx_it.c \
+Core/Src/stm32g0xx_hal_msp.c \
+Core/Src/system_stm32g0xx.c \
+Core/Src/syscalls.c \
+Core/Src/sysmem.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_rcc.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_cortex.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_rcc_ex.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_pwr.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_pwr_ex.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_iwdg.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_uart_ex.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_uart.c \
+Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_gpio.c
+# Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_tim.c \
+# Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_tim_ex.c \
+# Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_rcc.c \
+# Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_flash.c \
+# Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_flash_ex.c \
+# Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_dma.c \
+# Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_dma_ex.c \
+
+# Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_exti.c
+
+ASM_SOURCES = \
+Core/Startup/startup_stm32g071rbtx.s
+
+PREFIX = arm-none-eabi-
+CC = $(PREFIX)gcc
+AS = $(PREFIX)gcc -x assembler-with-cpp
+CP = $(PREFIX)objcopy
+SZ = $(PREFIX)size
+
+HEX = $(CP) -O ihex
+BIN = $(CP) -O binary -S
+ 
+CPU = -mcpu=cortex-m0plus
+MCU = $(CPU) -mthumb $(FPU) $(FLOAT-ABI)
+
+AS_DEFS = 
+
+C_DEFS = \
+-DUSE_HAL_DRIVER \
+-DSTM32G071xx
+
+
+AS_INCLUDES =
+
+C_INCLUDES = \
+-ICore/Inc \
+-IDrivers/STM32G0xx_HAL_Driver/Inc \
+-IDrivers/STM32G0xx_HAL_Driver/Inc/Legacy \
+-IDrivers/CMSIS/Device/ST/STM32G0xx/Include \
+-IDrivers/CMSIS/Include
+
+
+ASFLAGS = $(MCU) $(AS_DEFS) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
+CFLAGS = $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
+
+ifeq ($(DEBUG), 1)
+CFLAGS += -ggdb3
+endif
+
+CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"
+
+LDSCRIPT = STM32G071RBTX_FLASH.ld
+
+LIBS = -lc -lm -lnosys
+LIBDIR =
+LDFLAGS = $(MCU) -specs=nano.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections
+
+all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin
+
+OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
+vpath %.c $(sort $(dir $(C_SOURCES)))
+
+OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
+vpath %.s $(sort $(dir $(ASM_SOURCES)))
+
+$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR) 
+	$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@
+
+$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
+	$(AS) -c $(CFLAGS) $< -o $@
+
+$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) Makefile
+	$(CC) $(OBJECTS) $(LDFLAGS) -o $@
+	$(SZ) $@
+
+$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
+	$(HEX) $< $@
+
+$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
+	$(BIN) $< $@
+
+$(BUILD_DIR):
+	mkdir $@
+
+clean:
+	-rm -fR $(BUILD_DIR)
+
+-include $(wildcard $(BUILD_DIR)/*.d)