GPDMA with linked list for big buffers

[Rickou73]

Hello !

I'm using STM32U5A5 on my custom board.

i would like to configure a very big buffer to store lots of ADC samples (60sec circular audio buffer)

i check the GPDMA is limited to 64kB

I tryed a small test using the linked list to do a small test using 2 nodes related to 2 64kB chunk of data.

It seems it works fine, but is there a way to know at the half or complete callback which buffer is full ?

or which list node is related ?

thank for help

[OOUAD]

Hello Rickou73,

Try to configure pNodeConfig.TransferEventMode to DMA_TCEM_EACH_LL_ITEM_TRANSFER for each node configuration. This will generate a  GPDMA_CHx_TC interrupt whenever a node completes its transfer.

BRs,
Oussema.