.vscode/tasks.json

@@ -7,7 +7,8 @@
             "PLATFORM": "nrf52",
             // "PLATFORM": "posix",
             // "APPLICATION": "blinky",
-            "APPLICATION": "button",
+            // "APPLICATION": "button",
+            "APPLICATION": "spi",
         },
     },
     "tasks": [

config/build/nrf52/spi/Makefile.spi

@@ -0,0 +1,51 @@
+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)modules/nrfx/drivers/include/
+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)integration/nrfx/legacy/
+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_SRCS += $(NRF_PATH)components/libraries/util/app_error.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/util/app_error_weak.c
+NRF_C_SRCS += $(NRF_PATH)modules/nrfx/drivers/src/nrfx_spim.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/log/src/nrf_log_frontend.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/atomic/nrf_atomic.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/log/src/nrf_log_default_backends.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/log/src/nrf_log_backend_uart.c
+NRF_C_SRCS += $(NRF_PATH)integration/nrfx/legacy/nrf_drv_uart.c
+NRF_C_SRCS += $(NRF_PATH)integration/nrfx/legacy/nrf_drv_spi.c
+NRF_C_SRCS += $(NRF_PATH)modules/nrfx/drivers/src/nrfx_uarte.c
+NRF_C_SRCS += $(NRF_PATH)modules/nrfx/drivers/src/prs/nrfx_prs.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/util/app_util_platform.c
+NRF_C_SRCS += $(NRF_PATH)modules/nrfx/drivers/src/nrfx_uart.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/log/src/nrf_log_backend_serial.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/memobj/nrf_memobj.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/balloc/nrf_balloc.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/log/src/nrf_log_str_formatter.c
+NRF_C_SRCS += $(NRF_PATH)external/fprintf/nrf_fprintf.c
+NRF_C_SRCS += $(NRF_PATH)external/fprintf/nrf_fprintf_format.c
+NRF_C_SRCS += $(NRF_PATH)components/libraries/ringbuf/nrf_ringbuf.c
+
+
+include config/build/$(PLATFORM)/Makefile.$(PLATFORM)

config/build/nrf52/spi/linker.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"

src/application/spi/main.c

@@ -0,0 +1,110 @@
+/**
+ * Copyright (c) 2015 - 2019, Nordic Semiconductor ASA
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, 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.
+ *
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ *
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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.
+ *
+ */
+#include "nrf_drv_spi.h"
+#include "app_util_platform.h"
+#include "nrf_gpio.h"
+#include "nrf_delay.h"
+#include "boards.h"
+#include "app_error.h"
+#include <string.h>
+#include "nrf_log.h"
+#include "nrf_log_ctrl.h"
+#include "nrf_log_default_backends.h"
+
+#define SPI_INSTANCE  0 /**< SPI instance index. */
+static const nrf_drv_spi_t spi = NRF_DRV_SPI_INSTANCE(SPI_INSTANCE);  /**< SPI instance. */
+static volatile bool spi_xfer_done;  /**< Flag used to indicate that SPI instance completed the transfer. */
+
+#define TEST_STRING "Nordic"
+static uint8_t       m_tx_buf[] = TEST_STRING;           /**< TX buffer. */
+static uint8_t       m_rx_buf[sizeof(TEST_STRING) + 1];    /**< RX buffer. */
+static const uint8_t m_length = sizeof(m_tx_buf);        /**< Transfer length. */
+
+/**
+ * @brief SPI user event handler.
+ * @param event
+ */
+void spi_event_handler(nrf_drv_spi_evt_t const * p_event,
+                       void *                    p_context)
+{
+    spi_xfer_done = true;
+    NRF_LOG_INFO("Transfer completed.");
+    if (m_rx_buf[0] != 0)
+    {
+        NRF_LOG_INFO(" Received:");
+        NRF_LOG_HEXDUMP_INFO(m_rx_buf, strlen((const char *)m_rx_buf));
+    }
+}
+
+int main(void)
+{
+    bsp_board_init(BSP_INIT_LEDS);
+
+    APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
+    NRF_LOG_DEFAULT_BACKENDS_INIT();
+
+    nrf_drv_spi_config_t spi_config = NRF_DRV_SPI_DEFAULT_CONFIG;
+    spi_config.ss_pin   = SPI_SS_PIN;
+    spi_config.miso_pin = SPI_MISO_PIN;
+    spi_config.mosi_pin = SPI_MOSI_PIN;
+    spi_config.sck_pin  = SPI_SCK_PIN;
+    APP_ERROR_CHECK(nrf_drv_spi_init(&spi, &spi_config, spi_event_handler, NULL));
+
+    NRF_LOG_INFO("SPI example started.");
+
+    while (1)
+    {
+        // Reset rx buffer and transfer done flag
+        memset(m_rx_buf, 0, m_length);
+        spi_xfer_done = false;
+
+        APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length));
+
+        while (!spi_xfer_done)
+        {
+            __WFE();
+        }
+
+        NRF_LOG_FLUSH();
+
+        bsp_board_led_invert(BSP_BOARD_LED_0);
+        nrf_delay_ms(200);
+    }
+}