4 files changed, 113 insertions(+), 0 deletions(-)

A .gitignore
A CMakeLists.txt
A README.md
A src/main.c

@@ 0,0 1,1 @@
+bin/

@@ 0,0 1,49 @@
+cmake_minimum_required(VERSION 3.14)
+set(CMAKE_C_COMPILER "arm-none-eabi-gcc")
+enable_language(ASM)
+
+file(GLOB_RECURSE LIB_SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} lib/*.c lib/*.s)
+
+file(GLOB_RECURSE LIB_HEADERS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} lib/*.h)
+list(TRANSFORM LIB_HEADERS REPLACE "/[^/]+\.h$" "" OUTPUT_VARIABLE LIB_HEADERS_DIRS)
+list(REMOVE_DUPLICATES LIB_HEADERS_DIRS)
+
+file(GLOB SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} src/*.c)
+
+include_directories(inc ${LIB_HEADERS_DIRS})
+
+set(LINKER_SCRIPT_INPUT lib/stm32f4xx/Project/STM32F4xx_StdPeriph_Templates/TrueSTUDIO/STM32F40_41xxx/STM32F417IG_FLASH.ld)
+set(LINKER_SCRIPT_OUTPUT stm32_flash.ld)
+configure_file(${LINKER_SCRIPT_INPUT} ${LINKER_SCRIPT_OUTPUT} COPYONLY)
+
+add_definitions(
+    -DSTM32F40_41xxx
+    -DHSE_VALUE=\(\(uint32_t\)8000000\)
+    -DHSI_VALUE=\(\(uint32_t\)16000000\)
+    -DUSE_STDPERIPH_DRIVER
+)
+
+set(
+    CPU_FLAGS
+    -mcpu=cortex-m4 -mlittle-endian -mthumb -mthumb-interwork
+    -mfloat-abi=hard -mfpu=fpv4-sp-d16
+    -g -O0
+)
+
+add_compile_options(
+    ${CPU_FLAGS}
+    -fdata-sections -ffunction-sections
+)
+
+add_link_options(
+    ${CPU_FLAGS}
+    --specs=nosys.specs
+    -T${LINKER_SCRIPT_OUTPUT}
+    -Wl,--gc-sections
+)
+
+add_executable(main.elf ${SOURCES} ${LIB_SOURCES})
+
+add_custom_target(main.bin ALL arm-none-eabi-objcopy -O binary main.elf main.bin DEPENDS main.elf)
+add_custom_target(size ALL arm-none-eabi-size -A main.elf DEPENDS main.elf)
+add_custom_target(flash ALL st-flash --reset write main.bin 0x8000000 DEPENDS main.bin)

@@ 0,0 1,29 @@
+# stm32f4discovery
+
+## dependencies
+
+- CMake
+- `gcc-arm-none-eabi` toolchain
+- [texane/stlink](https://github.com/texane/stlink)
+- [stm32f4discovery](https://www.st.com/en/evaluation-tools/stm32f4discovery.html)
+
+## setup
+
+```shell
+# setup output directory
+mkdir bin && cd bin
+cmake ..
+
+# build and run project
+make main.bin
+make flash
+```
+
+## other
+
+```shell
+# sync lib files
+rsync -a -v --files-from=lib-files-freertos.txt ../embedded-libs/FreeRTOSv10.2.1/ lib/freertos/
+rsync -a -v --files-from=lib-files-stm32f4xx.txt ../embedded-libs/STM32F4xx_DSP_StdPeriph_Lib_V1.8.0/ lib/stm32f4xx/
+rsync -a -v --files-from=lib-files-stm32f4discovery.txt ../embedded-libs/STM32F4-Discovery_FW_V1.1.0/ lib/stm32f4discovery/
+```

@@ 0,0 1,34 @@
+#include "stm32f4_discovery.h"
+
+#include "FreeRTOS.h"
+#include "task.h"
+
+typedef struct {
+    Led_TypeDef led;
+    int delay_ms;
+} LedTaskParam;
+
+static const LedTaskParam param1 = { .led = LED4, .delay_ms = 200 };
+static const LedTaskParam param2 = { .led = LED5, .delay_ms = 800 };
+
+static void led_task(void *args) {
+    LedTaskParam param = *(LedTaskParam*) args;
+    while (1) {
+        STM_EVAL_LEDToggle(param.led);
+        vTaskDelay(pdMS_TO_TICKS(param.delay_ms));
+    };
+}
+
+int main(void) {
+    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
+
+    STM_EVAL_LEDInit(LED4);
+    STM_EVAL_LEDInit(LED5);
+
+    xTaskCreate(led_task, "LED_blink_1", 128, (void*)&param1, configMAX_PRIORITIES-1, NULL);
+    xTaskCreate(led_task, "LED_blink_2", 128, (void*)&param2, configMAX_PRIORITIES-1, NULL);
+
+    vTaskStartScheduler();
+    while (1) {}
+    return 0;
+}