nRF52832 + sgtl5000 wireless audio

RE: nRF52832 + sgtl5000 wireless audio

enukic — Sun, 23 Jun 2024 21:33:24 GMT

Thanks for the support on this. Unfortunately, I wasn't able to solve this issue up to this point.
If you seem appropriate, please close this ticket. I think I have hit a dead end with this one.

Thanks
Emir

RE: nRF52832 + sgtl5000 wireless audio

Sigurd — Thu, 21 Mar 2024 15:10:52 GMT

Difficult to say why the shift is happening. If it's buffering on nRF52 or SGTL5000 side. I don't have a SGTL5000 to test with. But I would expect it to stabilize after a while, if not then, I would expect some buffering warning/errors/overrun/crash/etc to happen, that could point to why it's happening.

RE: nRF52832 + sgtl5000 wireless audio

enukic — Sat, 16 Mar 2024 12:31:46 GMT

Sure, here is a drawing

Does something at some point crash when enough time has passed?

I haven't noticed anything crashing. I have observed the system for a couple minutes when testing (multiple times).

RE: nRF52832 + sgtl5000 wireless audio

Sigurd — Fri, 08 Mar 2024 15:36:11 GMT

[quote user="enukic"]First scope (yellow color signal) probe is on the line in pins of the sgtl500, which are connected to my laptop headphones output, and the other scope probe (cyan color signal) is on the 3.5mm jack of the sgtl5000.[/quote]

Could you make a drawing of this setup?

[quote user="enukic"]If you observe central peak of the sine for both signals, you will notice the cyan signal sliding to the left over the time.[/quote]

Does something at some point crash when enough time has passed?

RE: nRF52832 + sgtl5000 wireless audio

enukic — Wed, 06 Mar 2024 11:16:59 GMT

Hi Sigurd,

Thanks for the reply.

It seems like the output signal is slowly shifting in time. For example, if I sit and watch at both signals at the same time, the output signal will slowly slide to the left.
Here is a video of the oscilloscope I made with my phone. I'm sorry, this is the best I could do. The audio is pretty noisy too.

www.youtube.com/watch

First scope (yellow color signal) probe is on the line in pins of the sgtl500, which are connected to my laptop headphones output, and the other scope probe (cyan color signal) is on the 3.5mm jack of the sgtl5000.

If you observe central peak of the sine for both signals, you will notice the cyan signal sliding to the left over the time.

Thank you for looking into this!

Kind regards
Emir

RE: nRF52832 + sgtl5000 wireless audio

Sigurd — Mon, 26 Feb 2024 16:24:02 GMT

Hi!

[quote user=""]But the issue for me is when I measure input and output signal with an oscilloscope (where input is a sine signal), the output signal's phase is always slowly shifting.[/quote]

Could you explain this a bit more? is it time shifted, or shifted how? Do you have any plots, pictures, etc to share that shows this?