[STM32L4] STM32L4R5ZIT6用DMA把存储器里的数据发往串口的·问题

HAL_UART_Transmit(&huart1,buffer,1,1000);

HAL_UART_Transmit_DMA(&huart1, (uint8_t *)Buffer, 4);

static void DMA_Config(void)

{

  /*## -1- Enable DMA1 clock #################################################*/

  __HAL_RCC_DMA1_CLK_ENABLE();



  /*##-2- Select the DMA functional Parameters ###############################*/

  DmaHandle.Init.Direction = DMA_MEMORY_TO_PERIPH ;          /* M2M transfer mode                */

  DmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;               /* Peripheral increment mode Enable */

        //DmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;      

  DmaHandle.Init.MemInc = DMA_MINC_ENABLE;                  /* Memory increment mode Enable     */

        //DmaHandle.Init.MemInc = DMA_MINC_DISABLE;  

//  DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD; /* Peripheral data alignment : Word */

//  DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;    /* memory data alignment : Word     */

//  DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; /* Peripheral data alignment : Word */

//        

//  DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;    /* memory data alignment : Word     */

        DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE  ; /* Peripheral data alignment : Word */

  DmaHandle.Init.MemDataAlignment = DMA_PDATAALIGN_BYTE  ;    /* memory data alignment : Word     */

        DmaHandle.Init.Mode = DMA_NORMAL;                         /* Normal DMA mode                  */

  DmaHandle.Init.Priority = DMA_PRIORITY_HIGH;              /* priority level : high            */



  /*##-3- Select the DMA instance to be used for the transfer : DMA1_Channel1 #*/

  DmaHandle.Instance = DMA_INSTANCE;



  /*##-4- Initialize the DMA channel ##########################################*/

  if (HAL_DMA_Init(&DmaHandle) != HAL_OK)

  {

    /* Initialization Error */

    Error_Handler();

  }

  

  /*##-5- Select Callbacks functions called after Transfer complete and Transfer error */

  HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_CPLT_CB_ID, TransferComplete);

  HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_ERROR_CB_ID, TransferError);



  /*##-6- Configure NVIC for DMA transfer complete/error interrupts ##########*/

  /* Set Interrupt Group Priority */

  HAL_NVIC_SetPriority(DMA_INSTANCE_IRQ, 0, 0);



  /* Enable the DMA STREAM global Interrupt */

  HAL_NVIC_EnableIRQ(DMA_INSTANCE_IRQ);



  /*##-7- Start the DMA transfer using the interrupt mode ####################*/

  /* Configure the source, destination and buffer size DMA fields and Start DMA Channel transfer */

  /* Enable All the DMA interrupts */

  if (HAL_DMA_Start_IT(&DmaHandle, (uint32_t)&aSRC_Const_Buffer, (uint32_t)aDST_Buffer, 4) != HAL_OK)

  {

    /* Transfer Error */

    Error_Handler();

  }

}