使用STM32F030K6 串口1无法接收

每天几刀提问时间：2018-5-18 09:59 /

本帖最后由 yinshaojie 于 2018-5-18 10:01 编辑

/* USART1 init function */
static void MX_USART1_UART_Init(void)
{

  huart1.Instance = USART1;
  huart1.Init.BaudRate = 19200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT|UART_ADVFEATURE_DMADISABLEONERROR_INIT;
  huart1.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
  huart1.AdvancedInit.DMADisableonRxError = UART_ADVFEATURE_DMA_DISABLEONRXERROR;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
_Error_Handler(__FILE__, __LINE__);
  }

}
使用CUBE配置的，无法实现数据发送，可以接收数据，查询if ((USART1->ISR & UART_FLAG_TC)== 0)数据一直不成立

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4个回答

andey 回答时间：2018-5-18 11:19:48

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wenyangzeng 回答时间：2018-5-18 11:26:45

你应该不断执行：
HAL_UART_Receive(&huart1, (uint8_t *)RX_BUF,1);

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安静ing 回答时间：2018-5-18 11:29:06

/* While the UART in reception process, user can transmit data through
   "aTxBuffer" buffer */
  if(HAL_UART_Transmit_IT(&UartHandle, (uint8_t*)aTxMessage, 1)!= HAL_OK)
  {
      while(1) {};
  }
  /* Any data received will be stored "aRxBuffer" buffer : the number max of
   data received is 10 */
  if(HAL_UART_Receive_IT(&UartHandle, (uint8_t *)aRxBuffer, 1) != HAL_OK)
  {
      while(1) {};
  }

HAL_UART_Transmit直接就能发送了