STM32 HAL 串口接收错误处理重写HAL_UART_ErrorCallback函数

Debug程序使其运行在一处断点处，停止程序运行。发送2个或2个以上字节到串口，串口会出现溢出错误。

void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
{
          
   
//执行 UART_EndRxTransfer(huart);
UART_EndRxTransfer(huart);
......
HAL_UART_ErrorCallback(huart);
......
}

static void UART_EndRxTransfer(UART_HandleTypeDef *huart)
{
          
   
  /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE));
  CLEAR_BIT(huart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));

  /* At end of Rx process, restore huart->RxState to Ready */
  huart->RxState = HAL_UART_STATE_READY;

  /* Reset RxIsr function pointer */
  huart->RxISR = NULL;
}

重写HAL_UART_ErrorCallback代码

void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
{
          
   
	if(huart == &huart1)
	{
          
   
//执行HAL_UART_ErrorCallback时，还处于lock，需先unlock，
//因为HAL_UART_Receive_IT执行时需判断如果是lock则直接返回BUSY
		__HAL_UNLOCK(huart);		
		HAL_UART_Receive_IT(&huart1,Tx_M_Buff_Temp[0],1);
	}
}

HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
          
   
  /* Check that a Rx process is not already ongoing */
  if (huart->RxState == HAL_UART_STATE_READY)
  {
          
   
    if ((pData == NULL) || (Size == 0U))
    {
          
   
      return HAL_ERROR;
    }

//需判断如果是lock则直接返回BUSY
    __HAL_LOCK(huart);		

    huart->pRxBuffPtr  = pData;
    huart->RxXferSize  = Size;
    huart->RxXferCount = Size;
    huart->RxISR       = NULL;
......
}