i2s on NRF5340 - Feeding from FIFO

RE: i2s on NRF5340 - Feeding from FIFO

Elfving — Tue, 06 May 2025 12:32:31 GMT

Hi Finlay,

Any update on this?

[quote user="finsmy"]On a more general note. Is the FIFO the best choice for what I'm trying to do here or is there a slightly more clever way to asynchronously pass audio samples from an arbitrary source to the i2s buffer?[/quote]

Sorry about the wait regarding this point, I assume you still need this question addressed?

Regards,

Elfving

RE: i2s on NRF5340 - Feeding from FIFO

finsmy — Mon, 05 May 2025 20:52:55 GMT

This was indeed the trick. Thank you very much. Sorry for taking so long to confirm.

RE: i2s on NRF5340 - Feeding from FIFO

finsmy — Thu, 17 Apr 2025 15:46:56 GMT

This is a good point. I am away from the hardware at the moment but I'll try that at the earliest possible opportunity and get back to you.

On a more general note. Is the FIFO the best choice for what I'm trying to do here or is there a slightly more clever way to asynchronously pass audio samples from an arbitrary source to the i2s buffer?

RE: i2s on NRF5340 - Feeding from FIFO

Sigurd Hellesvik — Wed, 16 Apr 2025 06:00:23 GMT

Ah did not see the logs in my first read of this ticket.

What happens if you use K_NO_WAIT instead of K_FOREVER in k_fifo_get()?

From Zephyr FIFO docs, it looks like the FIFO will only wait if it is empty. Do you agree?
"A data item may be removed from a FIFO by a thread. If the FIFO’s queue is empty a thread may choose to wait for a data item to be given."

RE: i2s on NRF5340 - Feeding from FIFO

finsmy — Tue, 15 Apr 2025 20:28:36 GMT

The log shown above is the exact output and the version of the SDK used is 2.9.1.

RE: i2s on NRF5340 - Feeding from FIFO

Sigurd Hellesvik — Tue, 15 Apr 2025 11:37:19 GMT

[quote user=""]that it is not being supplied data fast enough (based on log messages) [/quote]

Can you quote the logs exactly?

What version of the SDK do you use?

Regards,
Sigurd Hellesvik