HAL_DMA_RegisterCallback with SPI

[STmine]

Hi,

I'm just struggling with the same problem. I use SPI with DMA non-circular mode and want a callback for receive complete.

I can set the callback function with HAL_DMA_RegisterCallback but in HAL_SPI_TransmitReceive_DMA it will be overwritten:

 /* Set the SPI Tx/Rx DMA Half transfer complete callback */
  hspi->hdmarx->XferHalfCpltCallback = SPI_DMAHalfTransmitReceiveCplt;
  hspi->hdmarx->XferCpltCallback     = SPI_DMATransmitReceiveCplt;

Edit: Post moved from original thread How to know the when the DMA transfer done?, to give a chance to be answered. Please precise if you are using U5 as original one.

[Saket_Om]

Hello @STmine 

Could you provide more details about the issue please. 

What is the MCU you are using? 

I can set the callback function with HAL_DMA_RegisterCallback but in HAL_SPI_TransmitReceive_DMA it will be overwritten:

 /* Set the SPI Tx/Rx DMA Half transfer complete callback */
  hspi->hdmarx->XferHalfCpltCallback = SPI_DMAHalfTransmitReceiveCplt;
  hspi->hdmarx->XferCpltCallback     = SPI_DMATransmitReceiveCplt;

---

What you want to say by overwritten? How it is overriten?

[Billy OWEN]

Hi @STmine 

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

Regards,

Billy

[KnarfB]

The DMA callbacks are used internall by SPI HAL and should not be changed.

You can override HAL_SPI_TxCpltCallback function and friends, or register your own callback function with HAL_SPI_RegisterCallback.

hth

KnarfB