HAL_SAI_Receive_DMA does not work (STM32H74xx)

[JR2963]

Hi,

I use SAI interface for reading data: 8 of 32bit slots -> 256 Bytes

This work fine:

uint32_t GlSAI_DMA_Buff[8];
....
HAL_SAI_Receive(&hsai_BlockB3,(uint8_t *) GlSAI_DMA_Buff, 8, 0xffffff);

When I use DMA like this:

HAL_SAI_Receive_DMA(&hsai_BlockB3,(uint8_t *) GlSAI_DMA_Buff, 8);

It only recieve 1 Byte:

Then only GlSAI_DMA_Buff[0] is equal to 0x52 - but there should be something like 0x5260A246 , in other places are also zeros...

When I try another DMA for mem to mem (on GlSAI_DMA_Buff ) it works fine - so probably my MPU for disabling Cache is set correctly.

Any advice please?

[JR2963 · Accepted solution]

OK, the Cube did not enable clock for DMA - so no DMA setting was transfered to DMA registers...