TOPCB 发表于 2018-12-18 16:50
本帖最后由 安 于 2018-2-11 10:56 编辑

重新初始化串口试一下。看样子像是串口没有初始化。  HAL_UART_STATE_READY             = 0x20U,    /*!< Peripheral Initialized and ready for use Value is allowed for gState and RxState */

回复：安： 我的串口已经进行过了初始化，APP中的代码如下：
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_USART1_UART_Init();
  MX_UART4_Init();
、、-------------------------------------------
void MX_USART1_UART_Init(void)
{
HAL_UART_MspDeInit(&huart1);       
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  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_NO_INIT;
       
        HAL_UART_MspInit(&huart1);