[嵌入式]STM32 HAL库 关于串口接收中断出错后禁止中断的问题

/**
  * @brief Handle UART interrupt request.
  * @param huart UART handle.
  * @retval None
  */
void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
{
  uint32_t isrflags   = READ_REG(huart->Instance->ISR);
  uint32_t cr1its     = READ_REG(huart->Instance->CR1);
  uint32_t cr3its     = READ_REG(huart->Instance->CR3);

  uint32_t errorflags;
  uint32_t errorcode;

  /* If no error occurs */
  errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE | USART_ISR_RTOF));
  if (errorflags == 0U)
  {
    /* UART in mode Receiver ---------------------------------------------------*/
    if (((isrflags & USART_ISR_RXNE) != 0U)
        && ((cr1its & USART_CR1_RXNEIE) != 0U))
    {
      if (huart->RxISR != NULL)
      {
        huart->RxISR(huart);
      }
      return;
    }
  }

  /* If some errors occur */
  if ((errorflags != 0U)
      && (((cr3its & USART_CR3_EIE) != 0U)
          || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_RTOIE)) != 0U)))
  {
    /* UART parity error interrupt occurred -------------------------------------*/
    if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);

      huart->ErrorCode |= HAL_UART_ERROR_PE;
    }

    /* UART frame error interrupt occurred --------------------------------------*/
    if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);

      huart->ErrorCode |= HAL_UART_ERROR_FE;
    }

    /* UART noise error interrupt occurred --------------------------------------*/
    if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);

      huart->ErrorCode |= HAL_UART_ERROR_NE;
    }

    /* UART Over-Run interrupt occurred -----------------------------------------*/
    if (((isrflags & USART_ISR_ORE) != 0U)
        && (((cr1its & USART_CR1_RXNEIE) != 0U) ||
            ((cr3its & USART_CR3_EIE) != 0U)))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);

      huart->ErrorCode |= HAL_UART_ERROR_ORE;
    }

    /* UART Receiver Timeout interrupt occurred ---------------------------------*/
    if (((isrflags & USART_ISR_RTOF) != 0U) && ((cr1its & USART_CR1_RTOIE) != 0U))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_RTOF);

      huart->ErrorCode |= HAL_UART_ERROR_RTO;
    }

    /* Call UART Error Call back function if need be ----------------------------*/
    if (huart->ErrorCode != HAL_UART_ERROR_NONE)
    {
      /* UART in mode Receiver --------------------------------------------------*/
      if (((isrflags & USART_ISR_RXNE) != 0U)
          && ((cr1its & USART_CR1_RXNEIE) != 0U))
      {
        if (huart->RxISR != NULL)
        {
          huart->RxISR(huart);
        }
      }

      /* If Error is to be considered as blocking :
          - Receiver Timeout error in Reception
          - Overrun error in Reception
          - any error occurs in DMA mode reception
      */
      errorcode = huart->ErrorCode;
      if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) ||
          ((errorcode & (HAL_UART_ERROR_RTO | HAL_UART_ERROR_ORE)) != 0U))
      {
        /* Blocking error : transfer is aborted
           Set the UART state ready to be able to start again the process,
           Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
        UART_EndRxTransfer(huart);

        /* Disable the UART DMA Rx request if enabled */
        if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
        {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);

          /* Abort the UART DMA Rx channel */
          if (huart->hdmarx != NULL)
          {
            /* Set the UART DMA Abort callback :
               will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */
            huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;

            /* Abort DMA RX */
            if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
            {
              /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
              huart->hdmarx->XferAbortCallback(huart->hdmarx);
            }
          }
          else
          {
            /* Call user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
            /*Call registered error callback*/
            huart->ErrorCallback(huart);
#else
            /*Call legacy weak error callback*/
            HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */

          }
        }
        else
        {
          /* Call user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
          /*Call registered error callback*/
          huart->ErrorCallback(huart);
#else
          /*Call legacy weak error callback*/
          HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
        }
      }
      else
      {
        /* Non Blocking error : transfer could go on.
           Error is notified to user through user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
        /*Call registered error callback*/
        huart->ErrorCallback(huart);
#else
        /*Call legacy weak error callback*/
        HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
        huart->ErrorCode = HAL_UART_ERROR_NONE;
      }
    }
    return;

  } /* End if some error occurs */

  /* Check current reception Mode :
     If Reception till IDLE event has been selected : */
  if ((huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
      && ((isrflags & USART_ISR_IDLE) != 0U)
      && ((cr1its & USART_ISR_IDLE) != 0U))
  {
    __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_IDLEF);

    /* Check if DMA mode is enabled in UART */
    if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
    {
      /* DMA mode enabled */
      /* Check received length : If all expected data are received, do nothing,
         (DMA cplt callback will be called).
         Otherwise, if at least one data has already been received, IDLE event is to be notified to user */
      uint16_t nb_remaining_rx_data = (uint16_t) __HAL_DMA_GET_COUNTER(huart->hdmarx);
      if ((nb_remaining_rx_data > 0U)
          && (nb_remaining_rx_data < huart->RxXferSize))
      {
        /* Reception is not complete */
        huart->RxXferCount = nb_remaining_rx_data;

        /* In Normal mode, end DMA xfer and HAL UART Rx process*/
        if (huart->hdmarx->Init.Mode != DMA_CIRCULAR)
        {
          /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
          CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);

          /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
             in the UART CR3 register */
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);

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

          CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);

          /* Last bytes received, so no need as the abort is immediate */
          (void)HAL_DMA_Abort(huart->hdmarx);
        }
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
        /*Call registered Rx Event callback*/
        huart->RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount));
#else
        /*Call legacy weak Rx Event callback*/
        HAL_UARTEx_RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount));
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
      }
      return;
    }
    else
    {
      /* DMA mode not enabled */
      /* Check received length : If all expected data are received, do nothing.
         Otherwise, if at least one data has already been received, IDLE event is to be notified to user */
      uint16_t nb_rx_data = huart->RxXferSize - huart->RxXferCount;
      if ((huart->RxXferCount > 0U)
          && (nb_rx_data > 0U))
      {
        /* Disable the UART Parity Error Interrupt and RXNE interrupts */
        CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));

        /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
        CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);

        /* Rx process is completed, restore huart->RxState to Ready */
        huart->RxState = HAL_UART_STATE_READY;
        huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;

        /* Clear RxISR function pointer */
        huart->RxISR = NULL;

        CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
        /*Call registered Rx complete callback*/
        huart->RxEventCallback(huart, nb_rx_data);
#else
        /*Call legacy weak Rx Event callback*/
        HAL_UARTEx_RxEventCallback(huart, nb_rx_data);
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
      }
      return;
    }
  }
#if defined(USART_CR1_UESM)
#if defined(USART_CR3_WUFIE)

  /* UART wakeup from Stop mode interrupt occurred ---------------------------*/
  if (((isrflags & USART_ISR_WUF) != 0U) && ((cr3its & USART_CR3_WUFIE) != 0U))
  {
    __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_WUF);

    /* UART Rx state is not reset as a reception process might be ongoing.
       If UART handle state fields need to be reset to READY, this could be done in Wakeup callback */

#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /* Call registered Wakeup Callback */
    huart->WakeupCallback(huart);
#else
    /* Call legacy weak Wakeup Callback */
    HAL_UARTEx_WakeupCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
    return;
  }
#endif /* USART_CR3_WUFIE */
#endif /* USART_CR1_UESM */

  /* UART in mode Transmitter ------------------------------------------------*/
  if (((isrflags & USART_ISR_TXE) != 0U)
      && ((cr1its & USART_CR1_TXEIE) != 0U))
  {
    if (huart->TxISR != NULL)
    {
      huart->TxISR(huart);
    }
    return;
  }

  /* UART in mode Transmitter (transmission end) -----------------------------*/
  if (((isrflags & USART_ISR_TC) != 0U) && ((cr1its & USART_CR1_TCIE) != 0U))
  {
    UART_EndTransmit_IT(huart);
    return;
  }

}

串口中断在发生HAL_UART_ERROR_RTO（接收器超时）或者HAL_UART_ERROR_ORE（溢出错误）中断后程序进入UART_EndRxTransfer(huart)失能USART_CR1_RXNEIE 、USART_CR1_PEIE、USART_CR3_EIE，导致串口无法再接收数据

/**
  * @brief  End ongoing Rx transfer on UART peripheral (following error detection or Reception completion).
  * @param  huart UART handle.
  * @retval None
  */
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 | USART_CR1_PEIE));
  CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);

  /* In case of reception waiting for IDLE event, disable also the IDLE IE interrupt source */
  if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
  {
    CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
  }

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

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

解决办法：
出现上述现象后，HAL库会调用__weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)函数，在此函数中重新初始化串口