How to use AUX output on nRF5340 Audio DK

RE: How to use AUX output on nRF5340 Audio DK

dejans — Sat, 11 May 2024 07:48:50 GMT

Hi HunterTom ,

Previously mentioned audio unicast server and audio broadcast sink samples can be configured to use I2S as audio output. There are some limitations on the samples shown in nrf5340 audio feature support.
You can read more about Zephyr API: I2S interface and I2S driver in the documentation. Additionally, you could look at i2s_master example, I2S echo sample and i2s tests.
For pin control you can look at cpuapp_common-pinctrl and for devicetree at cpuapp_common. General information about devicetree is available in configuring devicetree.

Best regards,
Dejan

RE: How to use AUX output on nRF5340 Audio DK

HunterTom — Wed, 08 May 2024 18:05:43 GMT

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!

RE: How to use AUX output on nRF5340 Audio DK

dejans — Mon, 06 May 2024 12:33:48 GMT

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