Can I run without ADC chip? Getting PRU interrupt timeout

Rich_Sewell

Hi, I have hacked together a temporary mini-cape without the ADC chip and I am wondering if it is necessary to install the ADC on the board (I'd rather not). Bela seems to recognise my TLV320 audio Codec Ok (at least the idc codec error goes away when the cape is powered up), but I then get a "PRU interrupt timeout, -1 110 Connection timed out" error. I can get output from the print example and use terminal just fine. I suspect that I get the PRU timeout because of the missing ADC chip. Is that true or do I have some other problem? If so is there a way to disable in software? I have tried switching off analog and digital in the settings but it makes no difference.
Thanks, Rich

Rich_Sewell

This is the output from dmesg if that helps

Rich_Sewell

So it seems like I can run without the ADC chip, (discovered after soldering one on). I had some bad wiring on my AUD_BCLK, and now I'm up and running yeah! Long prototype wires on the AUD_BCLK seem to be causing some noise and comms problems. Moving the AUD_BCLK wire away from the other AUD_XXX wires seems to fix it.