Underruns with LE aduio application for nRF5340 with I2S and GPIOTE

RE: Underruns with LE aduio application for nRF5340 with I2S and GPIOTE

dejans — Tue, 16 Jan 2024 14:00:37 GMT

Hi,

Based on my discussion with developers, this does not seem to be a driver issue. The only concern expressed is your choice to use default NRFx priority. Maybe you do something there which could cause underruns.

Best regards,
Dejan

RE: Underruns with LE aduio application for nRF5340 with I2S and GPIOTE

Ahmed Moheb — Mon, 15 Jan 2024 13:54:57 GMT

Hi Dejan,

First of all, I appreciate your co-operation while trying to help with this, but I don't see this helping.

I'm not trying to avoid the underruns, so even if it doesn't exist with the latest SDK, I won't consider it solved as I've a complete application built arround SDK 2.4.0 and I'm not willing to migrate to another SDK version.

I'm trying to find out what makes the GPIOTE module affects the runtime behavior of the application.

Assigning a task to toggle an LED using the GPIOTE should not infulence the application behavior as it's a H/W module that runs in the background independent of the CPU.

So, I'm trying to figure out whether I'm using it in a wrong way, Is there a driver issue or what else.

I hope you got my point and feel free to express what you think.

RE: Underruns with LE aduio application for nRF5340 with I2S and GPIOTE

dejans — Mon, 15 Jan 2024 13:20:32 GMT

Hi,

Thank you for providing the logs.

Could you try your application using NCS v2.5.1 and provide the logs?

Best regards,
Dejan

RE: Underruns with LE aduio application for nRF5340 with I2S and GPIOTE

Ahmed Moheb — Sun, 14 Jan 2024 14:54:02 GMT

Hello,

Please find the Logs demonstrating the issue generated using SDK 2.4.0 and nRF5340 Audio DK.

RE: Underruns with LE aduio application for nRF5340 with I2S and GPIOTE

dejans — Fri, 12 Jan 2024 09:23:07 GMT

Hi,

Could you share the application log?

Best regards,
Dejan

RE: Underruns with LE aduio application for nRF5340 with I2S and GPIOTE

Ahmed Moheb — Thu, 11 Jan 2024 14:48:07 GMT

I'm using the LE audio application sample included with the nRF Connect SDK.

I've inserted the code above in src/modules/audio_sync_timer.c to hook the output pin to I2S start event using the GPIOTE to be able to monitor the pin using a logic analyzer.

Actually, I wasn't expecting any changes to the application performance as the GPIOTE module shouldn't infulence the CPU but that wasn't the case and I found some logs with underruns.

Sorry, but I don't have extra information to share about the underruns itself.

RE: Underruns with LE aduio application for nRF5340 with I2S and GPIOTE

dejans — Thu, 11 Jan 2024 14:30:23 GMT

Hi,

Could you provide more information about the issue that you have? Getting more information about the underruns might be helpful.

Best regards,
Dejan