static void MX_USART1_UART_Init(void)

{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */

  huart1.Instance = USART1;

  huart1.Init.BaudRate = 460800;

  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;

  if (HAL_UART_Init(&huart1) != HAL_OK)

  {

    Error_Handler();

  }

  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}

void HAL_UART_MspInit(UART_HandleTypeDef* huart)

{

  GPIO_InitTypeDef GPIO_InitStruct = {0};

  if(huart->Instance==USART1)

  {

  /* USER CODE BEGIN USART1_MspInit 0 */

  /* USER CODE END USART1_MspInit 0 */

    /* Peripheral clock enable */

    __HAL_RCC_USART1_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();

    /**USART1 GPIO Configuration

    PA2     ------> USART1_TX

    PA3     ------> USART1_RX

    */

    GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Pull = GPIO_NOPULL;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

    GPIO_InitStruct.Alternate = GPIO_AF1_USART1;

    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    /* USART1 DMA Init */

    /* USART1_TX Init */

    hdma_usart1_tx.Instance = DMA1_Channel2;

    hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;

    hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;

    hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE;

    hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;

    hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;

    hdma_usart1_tx.Init.Mode = DMA_NORMAL;

    hdma_usart1_tx.Init.Priority = DMA_PRIORITY_LOW;

    if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK)

    {

      Error_Handler();

    }

    __HAL_LINKDMA(huart,hdmatx,hdma_usart1_tx);

  /* USER CODE BEGIN USART1_MspInit 1 */

  /* USER CODE END USART1_MspInit 1 */

  }

}

//发送

HAL_UART_Transmit_DMA(&huart1, (uint8_t*)_bsp_bluetooth_SendBuff, 19);