Understanding H5 GPDMA - circular, linked lists, tutorial sought

[chriskuku]

I'm having difficulties in approaching GPDMA in H5 architecture. 
In another thread I'm trying to run a DMA, which keeps going itself (circularly?).
Does that mean inherently that always a linked list has to be used?
And would uneviteably go along with an interrupt being generated?

If the buffer length is 1 (in my case), that would be very costly and would foil the benefit of DMA.

Where can I find a good source for reading on (tutorial, examples)?

 

[mƎALLEm]

Hello,

STM32H5 workshop - 05 More advanced GPDMA - Linked Lists (intermediate)

[chriskuku]

Thanks for the link. As so often, the examples are not 100% covering my requirements. In my case I need to configure a DMA-transfer from memory to peripheral.
Thus I'm unsure what to enter into the LL-structure into DestAddress in the runtime configuration.
My destination is the I2S2 Tx register. What is the Macro name for it?

Is it  (uint32_t)((&hi2s2)->pTxBuffPtr) ?

 

EDIT: found it being the correct destination name. Still the DMA write doesn't work.

Having problems with the data format of source and destination. What is the term "burst length"?
I'm preparing adjacent  half words  in memory (L+R channels for audio).
These should be taken with one chunk by the DMA and transfered to the I2S Tx register. Is the latter a 32bit register?