RT-Thread Nano¶

RT-Thread Nano官方文档¶

https://www.rt-thread.org/document/site/#/rt-thread-version/rt-thread-nano/an0038-nano-introduction

STM32移植¶

STM32CubeMX创建项目¶

选择与目标MCU对应的型号创建工程¶

Serial， JTAG设置¶

时钟设置¶

根据电路图，设置时钟

将频率调到最大，在HCLK直接输入72，软件会自己算

UART设置¶

LED配置¶

生成代码¶

初次编译¶

使用FLYMCU在线烧录

添加RT-Thread Nano¶

RT-Thread Nano源码的获取¶

rt-thread.org/download.html#download-rt-thread-nano

https://www.rt-thread.org/download.html#download-rt-thread-nano

添加RT-Thread代码¶

修改Makefile¶

C_SOURCES =  \
$(wildcard rt_thread/src/*.c) \
rt_thread/libcpu/arm/cortex-m3/cpuport.c \
rt_thread/bsp/board.c \
Core/Src/main.c \

ASM_SOURCES =  \
startup_stm32f103xe.s \
rt_thread/libcpu/arm/cortex-m3/context_gcc.s

C_INCLUDES =  \
-Irt_thread/include \
-Irt_thread/bsp \

stm32f4xx_it.c去除3个函数¶

void PendSV_Handler(void)
void SysTick_Handler(void)
void HardFault_Handler(void)

修改函数入口¶

bl main 该成 bl entry

/* Call static constructors */
    bl __libc_init_array
/* Call the application's entry point.*/
  bl entry
  bx lr
.size Reset_Handler, .-Reset_Handler

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

#define RT_USING_CONSOLE

Ingenic移植¶

GCC_PATH = /mnt/d/WorkSpace/tools/toolchains/mips-gcc520-elf/bin