开启TC发送完成中断，TE传输错误中断，DME直接模式错误中断和FIFO错误中断
#define DMA_IT_TC ((uint32_t)DMA_SxCR_TCIE)
#define DMA_IT_HT ((uint32_t)DMA_SxCR_HTIE)
#define DMA_IT_TE ((uint32_t)DMA_SxCR_TEIE)
#define DMA_IT_DME ((uint32_t)DMA_SxCR_DMEIE)
#define DMA_IT_FE ((uint32_t)0x00000080U)
最后还有个HT半传输中断，这个根据用户时候注册的半传输回调函数决定。
/**
* @brief Start the DMA Transfer with interrupt enabled.
* @param hdma: pointer to a DMA_HandleTypeDef structure that contains
* the configuration information for the specified DMA Stream.
* @param SrcAddress: The source memory Buffer address
* @param DstAddress: The destination memory Buffer address
* @param DataLength: The length of data to be transferred from source to destination
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DMA_Start_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the parameters */
assert_param(IS_DMA_BUFFER_SIZE(DataLength));
/* Check the DMA peripheral handle */
if(hdma == NULL)
{
return HAL_ERROR;
}
/* Process locked */
__HAL_LOCK(hdma);
if(HAL_DMA_STATE_READY == hdma->State)
{
/* Change DMA peripheral state */
hdma->State = HAL_DMA_STATE_BUSY;
/* Initialize the error code */
hdma->ErrorCode = HAL_DMA_ERROR_NONE;
/* Disable the peripheral */
__HAL_DMA_DISABLE(hdma);
/* Configure the source, destination address and the data length */
DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
if(IS_D2_DMA_INSTANCE(hdma) != RESET) /* D2 Domain DMA : DMA1 or DMA2 */
{
/* Enable Common interrupts*/
MODIFY_REG(((DMA_Stream_TypeDef *)hdma->Instance)->CR, (DMA_IT_TC | DMA_IT_TE | DMA_IT_DME | DMA_IT_HT), (DMA_IT_TC | DMA_IT_TE | DMA_IT_DME));
((DMA_Stream_TypeDef *)hdma->Instance)->FCR |= DMA_IT_FE;
if(hdma->XferHalfCpltCallback != NULL)
{
/*Enable Half Transfer IT if corresponding Callback is set*/
((DMA_Stream_TypeDef *)hdma->Instance)->CR |= DMA_IT_HT;
}
}
else /* D3 Domain BDMA */
{
/* Enable Common interrupts*/
MODIFY_REG(((BDMA_Channel_TypeDef *)hdma->Instance)->CCR, (BDMA_CCR_TCIE | BDMA_CCR_HTIE | BDMA_CCR_TEIE), (BDMA_CCR_TCIE | BDMA_CCR_TEIE));
if(hdma->XferHalfCpltCallback != NULL)
{
/*Enable Half Transfer IT if corresponding Callback is set*/
((BDMA_Channel_TypeDef *)hdma->Instance)->CCR |= BDMA_CCR_HTIE;
}
}
/* Check if DMAMUX Synchronization is enabled*/
if((hdma->DMAmuxChannel->CCR & DMAMUX_CxCR_SE) != 0U)
{
/* Enable DMAMUX sync overrun IT*/
hdma->DMAmuxChannel->CCR |= DMAMUX_CxCR_SOIE;
}
if(hdma->DMAmuxRequestGen != 0U)
{
/* if using DMAMUX request generator, enable the DMAMUX request generator overrun IT*/
/* enable the request gen overrun IT*/
hdma->DMAmuxRequestGen->RGCR |= DMAMUX_RGxCR_OIE;
}
/* Enable the Peripheral */
__HAL_DMA_ENABLE(hdma);
}
else
{
/* Process unlocked */
__HAL_UNLOCK(hdma);
/* Set the error code to busy */
hdma->ErrorCode = HAL_DMA_ERROR_BUSY;
/* Return error status */
status = HAL_ERROR;
}
return status;
} |
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