[HAL库学习之路]3.USART-异步串行通信

记录自己的STM32的HAL库的学习之路，不定期更新…

一、Pinout

二、Clock Configuration

三、Configuration

四、Generate Code

代码

int main(void)
{

  /* USER CODE BEGIN 1 */
    uint8_t rxBuffer[5];
  /* 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 */

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */
        if(__HAL_UART_GET_FLAG(&huart1,UART_FLAG_RXNE))
        {
            HAL_UART_Receive(&huart1,rxBuffer,5,1000);
            HAL_UART_Transmit(&huart1,rxBuffer,5,1000);
        }
  }
  /* USER CODE END 3 */

}