STM32F767 关于串口接收中断出错后禁止中断的问题

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已于 2022-12-01 20:59:47 修改 · 818 阅读

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#stm32 #单片机 #嵌入式硬件

于 2021-08-06 20:33:10 首次发布

/**
  * @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)