How to use AUX output on nRF5340 Audio DK

[HunterTom]

Hi, I have an nRF5340 Audio DK. As the first step, I want to play a simple 1k Hz tone and output it via the AUX jack on the board.

Is there any related sample code for me to get started with?

Alternatively, I do have an external DAC module that takes in I2S data. Is there any example code that demonstrate how to use I2S feature in nRF Connect SDK?

Thank you!

[dejans]

Hi,

You could have a look at audio applications - audio unicast client and audio unicast server, as well as audio broadcast source and audio broadcast sink.

There is a way to select analog jack input using I2S.

Best regards,
Dejan

[HunterTom]

Hi, thank you for your reply. I tried digging into the code but I found the codes are too intertwined and was not able to isolate the code for the feature I want. 

I do not need any fancy wireless features. I am simply looking for an example that just demonstrates how to output audio using I2S (setting up device tree and how to use I2S API in nRF Connect SDK).

Thank you!