F303RE串口控制led

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();



  /* Configure the system clock */

  SystemClock_Config();



  /* Initialize all configured peripherals */

  MX_GPIO_Init();

  MX_USART2_UART_Init();



  /* USER CODE BEGIN 2 */



  /* USER CODE END 2 */



  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  while (1)

  {

    HAL_UART_Transmit_IT(&huart2, (uint8_t *)TxBuffer, TXBUFFERSIZE);         //发送提示信息

    while (UartReady != SET)

    {

      ;

    }

    

    UartReady = RESET;

    

    HAL_UART_Receive_IT(&huart2, (uint8_t *)RxBuffer, RXBUFFERSIZE);        //串口接收命令

    

    while (UartReady != SET)

    {

      ;

    }

    

    UartReady = RESET;

    

    switch (CommandHandle((uint8_t *)RxBuffer))               //根据串口接收的命令执行相应的命令，然后根据结果返回提示

    {

      case 0:          //返回不可识别的命令

        HAL_UART_Transmit_IT(&huart2, (uint8_t *)"不能识别的命令！\n\n\n", COUNTOF("不能识别的命令！\n\n\n"));

        break;

      case 1:      //返回执行正常命令

        HAL_UART_Transmit_IT(&huart2, (uint8_t *)"执行正常！\n\n\n", COUNTOF("执行正常！\n\n\n"));

        break;

      case 2:       //返回Led状态为亮信息

        HAL_UART_Transmit_IT(&huart2, (uint8_t *)"LED状态为：亮！\n\n\n", COUNTOF("LED状态为：亮！\n\n\n"));

        break;

      case 3:       //返回Led状态为灭信息

        HAL_UART_Transmit_IT(&huart2, (uint8_t *)"LED状态为：灭！\n\n\n", COUNTOF("LED状态为：灭！\n\n\n"));

        break;

      default:

        ;

    }

    while (UartReady != SET)

    {

      ;

    }

    

    UartReady = RESET;

    

  /* USER CODE END WHILE */



  /* USER CODE BEGIN 3 */



  }

  /* USER CODE END 3 */



}

<p>static uint16_t Commandcmp(uint8_t* pCommand1, uint8_t* pCommand2, uint16_t CommandLength) //命令比较函数，其实字符串比较

{

  while (CommandLength)

  {

    if ((*pCommand1) != *pCommand2)

    {

      return CommandLength;

    }

    pCommand1++;

    pCommand2++;</p><p>    CommandLength--;

  }

  return 0;

}



static uint16_t CommandHandle(uint8_t* Command)    //命令处理

{

  if (Commandcmp(Command, (uint8_t *)Command_Lib[0], RXBUFFERSIZE) == 0)   //亮灯

  {

    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET);

    return 1;

  }

  else if (Commandcmp(Command, (uint8_t *)Command_Lib[1], RXBUFFERSIZE) == 0)  //灭灯

  {

    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET);

    return 1;

  }

  else if (Commandcmp(Command, (uint8_t *)Command_Lib[2], RXBUFFERSIZE) == 0)  //反转灯

  {

    HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);

    return 1;

  }

  else if (Commandcmp(Command, (uint8_t *)Command_Lib[3], RXBUFFERSIZE) == 0)  //查询状态

  {

    if ((GPIOA->ODR & GPIO_PIN_5) != (uint32_t)GPIO_PIN_RESET)

    {

      return 2; //亮

    }

    else

    {

      return 3;//灭

    }

  }

  else

  {

    return 0;//无法识别命令

  }

}</p>