[MIMXRT685-AUD-EVK] DMA Interrupt is not working in HiFi4 Dsp Core

[Surendar1]

DMA SDK examples are working fine in ARM core. In our application we need to configure the SPI peripheral in DMA mode. DMA interrupt breakpoint is not hitting even with simple DMA memory to memory copy without SPI. Kindly help me with any DMA example running on DSP HiFi4 core. Any detailed reference document is also fine. Thanks in advance. #i.MXRT #DMA

[kerryzhou · Accepted solution]

Hi @Surendar1 ,

    To RT685, DSP interrupt is not the same as the ARM core, I highly recommend you read this application note at first:

https://www.nxp.com/docs/en/application-note/AN12764.pdf

chapter 4.5 DMA and interrupt configuration

You need to use XOS to register an interrupt handler, and use the correct number.

Please check the AN at first.

Wish it helps you!

Best Regards,

Kerry