STM32H743IIT6学习笔记

概述

CubeMX+FreeRTOS+USART1+LED+LetterShell

配置

1. 下载LetterShell源码
   • LetterShell源码地址
2. 工程结构采用上一章的工程
3. 将LetterShell中源码加入工程
   
   添加的文件包括：

• ./src中的所有.c文件
• ./demo/stm32-freertos中的所有文件

4. 编译，处理所有编译错误

添加LetterShell相关代码

1. 配置shell_port.c中的接口函数

/**
 * @brief 用户shell写
 * 
 * @param data 数据
 */
void userShellWrite(char data)
{
//    serialTransmit(&debugSerial, (uint8_t *)&data, 1, 0xFF);
	HAL_UART_Transmit(&huart1, (uint8_t *)&data, 1, 0xFFFF);
}
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/**
 * @brief 用户shell读
 * 
 * @param data 数据
 * @return char 状态
 */
signed char userShellRead(char *data)
{
	if(HAL_UART_Receive(&huart1, (uint8_t *)data, 1, 0xFFFF) == HAL_OK)
	{
		return 0;
	}
	else
	{
		return -1;
	}
}
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2. 在main函数中初始化LetterShell接口

int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */

	userShellInit();			//初始化配置LetterShell
  /* USER CODE END 2 */

  /* Init scheduler */
  osKernelInitialize();  /* Call init function for freertos objects (in freertos.c) */
  MX_FREERTOS_Init();
  /* Start scheduler */
  osKernelStart();

  /* We should never get here as control is now taken by the scheduler */
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
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3. 在freertos.c中创建ShellHandler线程时加入参数

/* Create the thread(s) */
  /* creation of defaultTask */
  defaultTaskHandle = osThreadNew(StartDefaultTask, NULL, &defaultTask_attributes);

  /* creation of shell_handler */
  shell_handlerHandle = osThreadNew(ShellHandler, (Shell *)&shell, &shell_handler_attributes);

  /* creation of LEDBlink */
  LEDBlinkHandle = osThreadNew(LEDHandler, NULL, &LEDBlink_attributes);
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4. 修改ShellHandler函数

/* USER CODE END Header_ShellHandler */
void ShellHandler(void *argument)
{
  /* USER CODE BEGIN ShellHandler */
	Shell *shell = (Shell *)argument;
	char data;
  /* Infinite loop */
  for(;;)
  {
		//printf("ShellHandler\r\n");
		if(shell->read && (shell->read(&data) == 0))
		{
			shellHandler(shell,data);
		}
  }
  /* USER CODE END ShellHandler */
}
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5. 编译，会提示一些关于没有添加LetterShell头文件的错误，添加相关头文件
6. 编译成功后下载、验证
   

测试工程链接

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测试代码工程链接