stm32通过dma通道发送一个数组的hal库代码如何编写

可以使用以下代码进行编写:

void HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
    /* Process Locked */
    __HAL_LOCK(huart);
  
    /* Check that a Tx process is not already ongoing */
    if(huart->gState == HAL_UART_STATE_READY)
    {
        /* Change Tx state to busy */
        huart->gState = HAL_UART_STATE_BUSY_TX;
  
        /* Set the source address for DMA */
        huart->pTxBuffPtr = pData;
  
        /* Configure the DMA channel */
        DMA_InitStructure.Direction = DMA_MEMORY_TO_PERIPH;
        DMA_InitStructure.PeriphInc = DMA_PINC_DISABLE;
        DMA_InitStructure.MemInc = DMA_MINC_ENABLE;
        DMA_InitStructure.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
        DMA_InitStructure.MemDataAlignment = DMA_MDATAALIGN_BYTE;
        DMA_InitStructure.Mode = DMA_NORMAL;
        DMA_InitStructure.Priority = DMA_PRIORITY_LOW;
  
        /* Check the support of double buffer mode */
        if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
        {
            /* Activate the double buffer mode */
            DMA_InitStructure.MemBurst = DMA_MBURST_INC16;
            DMA_InitStructure.PeriphBurst = DMA_PBURST_INC16;
            HAL_DMA_Init(huart->hdmatx);
            /* Tx DMA Int enable */
            __HAL_DMA_DISABLE_IT(huart->hdmatx, DMA_IT_TC);
            __HAL_DMA_ENABLE_IT(huart->hdmatx, DMA_IT_TC);
        }
        else
        {
            /* Configure IT Tx DMA request */
            __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
            HAL_DMA_Init(huart->hdmatx);
        }
  
        /* Enable the DMA channel */
        HAL_DMA_Start_IT(huart->hdmatx, *(uint32_t*)&pData[0], *(uint32_t*)&huart->Instance->DR, Size);
  
        /* Enable the UART DMA requests */
        huart->Instance->CR3 |= USART_CR3_DMAT;
    }
  
    /* Process Unlocked */
    __HAL_UNLOCK(huart);
}

使用上述代码时，需要在main函数中进行以下调用：

uint8_t message[10] = "Hello, STM32";
HAL_UART_Transmit_DMA(&huart1, message, sizeof(message));