I2S Receive bug causing garbage data?

mgleason_3
Posts: 44
Joined: Mon Nov 07, 2016 5:04 pm

Re: I2S Receive bug causing garbage data?

Postby mgleason_3 » Fri Sep 29, 2017 10:05 pm

Thanks BuddyCasino!

At first blush that looks like what I'm seeing - just the channels reversed. So, either a) there's some sort of bug/problem in HW or b) there's a problem in the code and/or my understanding. I suspect it's a)...

Unfortunately, I think the bigger problem is this forum - "Discussion Forum -> Report Bugs" category. It doesn't seem to get much/any love or visibility.

So, I've got a couple things I'm gonna try to get to the bottom of this:

  1. take the microphones out of the equation by using a second ESP32 to generate the data
  2. Create a new post in the General forum.

WiFive
Posts: 1914
Joined: Tue Dec 01, 2015 7:35 am

Re: I2S Receive bug causing garbage data?

Postby WiFive » Fri Sep 29, 2017 10:09 pm

Could be DMA word alignment issue?

mgleason_3
Posts: 44
Joined: Mon Nov 07, 2016 5:04 pm

Re: I2S Receive bug causing garbage data?

Postby mgleason_3 » Fri Sep 29, 2017 10:20 pm

Possibly, but it seems more bit-level - like bits are shifted and possibly repeated.

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