[嵌入式]Conmi的正确答案——STM32 DMA接收USART1数据压入缓冲区

平台：STM32F103RET6

uint8_t /***/ usart1RXBuffer[1024];      
uint8_t /***/ usart1RXTempBuffer[1]; 
uint16_t /**/ usart1RXBufferCurrentPointer = 0;               

/**
  * @brief This function handles DMA1 channel5 global interrupt.
  */
void DMA1_Channel5_IRQHandler(void)
{
  /* USER CODE BEGIN DMA1_Channel5_IRQn 0 */

  /* USER CODE END DMA1_Channel5_IRQn 0 */
  HAL_DMA_IRQHandler(&hdma_usart1_rx);
  /* USER CODE BEGIN DMA1_Channel5_IRQn 1 */
  // 判断到接收后，每次接收一个字节压入缓冲区
  if (__HAL_DMA_GET_FLAG(&hdma_usart1_tx, DMA_FLAG_TC5))
  {
    usart1RXBuffer[usart1RXBufferCurrentPointer++] = usart1RXTempBuffer[0];
    usart1RXTempBuffer[0] = 0;
  }
  /* USER CODE END DMA1_Channel5_IRQn 1 */
}