SC589 SHARC Bare Metal Framework DMA Enablement - Not Working

Looked over this again, and the DMA enable seems correct.  I think the issue lies in the ADAU1761 initialization.  Going back to my original question, this command would not execute and so the initialization is never really verified.

uint8_t sigmadspRunning;
adau_read_ctrl_reg(&adau1761_local, ADAU1761_REG_DSP_RUN, &sigmadspRunning);

looks like your 1761 init issue has been addressed in a different thread. 1761 is the main audio clock in the SAM software. Without it, SPORT DMA or the entire audio system can't fire up at all. The original 1761 settings expect a 12.288 MHz MCLK but the SAM Rev 2.1 feeds a 24.576 MHz clock to 1761. You may follow another thread (sc589-mini-issues-error-at-programming-the-flash) to update the 1761 settings. 

That explanation makes sense.  After trying the new value for the clock divisor (r = 2, instead of r = 4 as BrandonH pointed out), the SPORT DMA still did not appear to work as expected.  The audio processing callback is never called, though it is set as the callback function. 

I will look at the thread some more, just in case there is something else I am missing.

Hello, I've just posted a resolution for the DMA issues interfacing with ADAU1761 in this thread: SC589-MINI issues error at programming the flash. - Q&A - SHARC Audio Module - EngineerZone (analog.com). Reposting here as it's related. Hope this helps!

Did you find a solution to this? I believe I am experiencing the same issue.

Hello, 

Most of the technical dialog and solutions surrounding this issue are documented in this thread: SC589-MINI issues error at programming the flash. - Q&A - SHARC Audio Module - EngineerZone (analog.com). That appears to have solved the issue for everyone we could see. This was on 2.11.1 of SAM Baremetal Framework. Be aware that many of these issues may have already been patched in later versions. Out of curiosity, you specify what version you are using? 

Hi Brandon, 

Thank you for linking to this response, but I am using the SAM board V1.4 and from what I can gather this solution seems to be for the V2.1 HW? My original question is posted here: https://ez.analog.com/dsp/software-and-development-tools/sharcaudiomodule/f/q-a/582178/sam-board-not-entering-dma-isr

I have tested with V2.0 - 2.1 and 2.2 of the bare metal framework and still get the same issue