nRF5340 Audio DK headphone output

RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Fri, 31 Jan 2025 14:51:51 GMT

RE: nRF5340 Audio DK headphone output

Nick_RA — Wed, 29 Jan 2025 19:26:36 GMT

[quote userid="77782" url="~/f/nordic-q-a/118004/nrf5340-audio-dk-headphone-output/520619"]If you are using buildprog.py, please enable CONFIG_AUDIO_SOURCE_I2S in the prj.conf to build.[/quote]

How is that going to help with

FATAL ERROR: CMake is not installed or cannot be found; cannot build.

(did you actually read the output I posted? Are you a bot?)

In any case, I have already done that.

RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Wed, 29 Jan 2025 19:13:42 GMT

Sorry to misunderstand your reply.

If you are using buildprog.py, please enable CONFIG_AUDIO_SOURCE_I2S in the prj.conf to build.

RE: nRF5340 Audio DK headphone output

Nick_RA — Wed, 29 Jan 2025 18:34:00 GMT

<sigh> You're selectively reading and/or completely missing the point. IT DOES NOT #*%%$@ WORK!!

I meant reinstalling everything is working, because I can build a Blinky in VS Code. So cmake is OK in this context.

What you quoted here is NOT working!!!

[quote userid="77782" url="~/f/nordic-q-a/118004/nrf5340-audio-dk-headphone-output/518717"]

Although building and programming using the VS Code Extension is not supported, you still can use the script or command line to achieve that.

To achieve your requirement with the nRF53 AudioDK, I think nRF5340 Audio: Broadcast source with CONFIG_AUDIO_SOURCE_I2S already can do that.

[/quote]

RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Wed, 29 Jan 2025 18:23:47 GMT

[quote user="Nick_RA"]This is after uninstalling everything and reinstalling a fresh copy of everything. I can build a sample app in vs code, so that's working.[/quote]

Happy to hear it works. 🙂

RE: nRF5340 Audio DK headphone output

Nick_RA — Wed, 29 Jan 2025 13:44:28 GMT

Sorry, that's a fail:

C:\ncs\v2.9.0\nrf\applications\nrf5340_audio\tools\buildprog>python buildprog.py -c app -b debug -d gateway
+------------+----------+---------+--------------+---------------------+---------------------+
|    snr     | snr conn |  device | only reboot  | core app programmed | core net programmed |
+------------+----------+---------+--------------+---------------------+---------------------+
| 1050175789 |   True   | gateway | Not selected |       Selected      |     Not selected    |
+------------+----------+---------+--------------+---------------------+---------------------+
Invoking build step
Run: west build C:\ncs\v2.9.0\nrf\applications\nrf5340_audio -b nrf5340_audio_dk/nrf5340/cpuapp --sysbuild -d C:\ncs\v2.9.0\nrf\applications\nrf5340_audio\build\dev_gateway\build_debug
-- west build: generating a build system
FATAL ERROR: CMake is not installed or cannot be found; cannot build.
Traceback (most recent call last):
  File "C:\ncs\v2.9.0\nrf\applications\nrf5340_audio\tools\buildprog\buildprog.py", line 418, in <module>
    __main()
    ~~~~~~^^
  File "C:\ncs\v2.9.0\nrf\applications\nrf5340_audio\tools\buildprog\buildprog.py", line 401, in __main
    __build_module(build_cfg, options)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "C:\ncs\v2.9.0\nrf\applications\nrf5340_audio\tools\buildprog\buildprog.py", line 176, in __build_module
    raise Exception("cmake error: " + str(ret_val))
Exception: cmake error: 1

C:\ncs\v2.9.0\nrf\applications\nrf5340_audio\tools\buildprog>

This is after uninstalling everything and reinstalling a fresh copy of everything. I can build a sample app in vs code, so that's working.

Here is the output of Generate Support Information within vs code for what it's worth:

// IMPORTANT: The following data can contain sensitive or confidential information about your environment.
// If you do not want others to see this information, make sure to remove it before sharing the data.

// For help and support, visit Nordic Semiconductor's DevZone at https://devzone.nordicsemi.com/.

{
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    "os": "win32",
    "osVersion": "Windows 11 Pro",
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    "vscode": "1.96.4",
    "electron": "32.2.6",
    "node": "v20.18.1"
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  "system": {
    "date": "2025-01-29T13:41:24.576Z",
    "vscodeRoot": "c:\\Users\\nick9\\AppData\\Local\\Programs\\Microsoft VS Code\\resources\\app",
    "nrfConnectForDesktopInstalled": true,
    "vscodeUptime": "00:08:36",
    "osUptime": "01:01:07",
    "cpu": "13th Gen Intel(R) Core(TM) i9-13900T"
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            "flash": [],
            "eraseAndFlash": []
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          "toolchain": "nRF Connect SDK Toolchain v2.9.0"
        }
      ]
    }
  ],
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      "version": "2.9.0",
      "path": "c:\\ncs\\toolchains\\b620d30767"
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  "connectedDevices": [
    {
      "serialNumber": "001050175789"
    }
  ],
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RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Thu, 16 Jan 2025 17:58:26 GMT

Although building and programming using the VS Code Extension is not supported, you still can use the script or command line to achieve that.

To achieve your requirement with the nRF53 AudioDK, I think nRF5340 Audio: Broadcast source with CONFIG_AUDIO_SOURCE_I2S already can do that.

RE: nRF5340 Audio DK headphone output

Nick_RA — Thu, 16 Jan 2025 16:58:10 GMT

That doesn't really help me right now:

Building and programming using the nRF Connect for VS Code extension is currently not supported.

I don't really want to set up a whole new (sorry that should read old) toolchain just to prove a point. Even if does work, it's academic because I want to keep to VS Code.

Can you please look at the project that nRF Connect VS Code extension generated (it's zipped and attached above), and advise how to make it work? I don't care too much about the sink, just the broadcast source.

At this stage I'm just trying to evaluate the system, starting with some basic power profile measurements as you can't/won't provide that info. Sadly it's turning into a painful experience :(

RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Thu, 16 Jan 2025 16:08:02 GMT

Could you try nRF5340 Audio applications (nrf\applications\nrf5340_audio) for the nRF53 AudioDK?

Choose the combination of build flags:

Choose the device type by using one of the following options:
- For headset device: -DCONFIG_AUDIO_DEV=1
- For gateway device: -DCONFIG_AUDIO_DEV=2

Also see:

nRF5340 Audio: Broadcast sink

nRF5340 Audio: Broadcast source

RE: nRF5340 Audio DK headphone output

Nick_RA — Thu, 16 Jan 2025 13:31:37 GMT

[quote userid="77782" url="~/f/nordic-q-a/118004/nrf5340-audio-dk-headphone-output/518526"]Add CONFIG_AUDIO_SOURCE_I2S=y to prj.conf file for the debug version /prj_release.conf file for the release version as the instruction in the nRF5340 Audio configuration: Selecting the analog jack input using I2S. The default configuration of the sink should already output to the Headphone Out. [/quote]

Let's concentrate on the source for now, as this is what I'm primarily concerned about.

I can turn USB audio off/on by adding/removing CONFIG_USE_USB_AUDIO_INPUT=y

If I remove this line I get a test tone broadcast instead.

But there is still no way I can see to enable I2S? In fact, I performed a text search for "CONFIG_AUDIO_SOURCE_I2S" on the entire project directory, it simply doesn't exist in any file.

devzone.nordicsemi.com/.../bap_5F00_broadcast_5F00_source.zip

RE: nRF5340 Audio DK headphone output

Nick_RA — Wed, 15 Jan 2025 22:02:49 GMT

Here is the board

And here is the toolchain info

This may well be down to how I am building the app in vscode. I followed the Nordic walkthrough videos on YouTube, but VScode's UI has changed since then. This is how I am building the app:

Create New Application
Copy a sample, save
Create new build configuration
Select the correct board target
Use default name "build" and build
Flash

Adding the line CONFIG_AUDIO_SOURCE_I2S=y to proj.conf results in the "unknown symbol" error.

I think we are maybe working on different versions of projects. Can you zip up an example and attach it?

RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Wed, 15 Jan 2025 21:28:26 GMT

Are you sure your AudioDK looks like this figure and has the same interface?

If you are using the Audio application with nRF53 Audio DK, the log should look like this

[quote user="Nick_RA"]As I wrote above, the source example project doesn't accept CONFIG_AUDIO_SOURCE_I2S=y[/quote]

Please ensure the SDK and Toolchain are v2.9.0 in the "Edit Build Configuration".

If the above still cannot help, please describe how you built the Audio application.

[quote user="Nick_RA"] I just want my broadcast source DK to stream from Line In, and my broadcast sink DK output to Headphone Out.[/quote]

Add CONFIG_AUDIO_SOURCE_I2S=y to prj.conf file for the debug version /prj_release.conf file for the release version as the instruction in the nRF5340 Audio configuration: Selecting the analog jack input using I2S. The default configuration of the sink should already output to the Headphone Out.

RE: nRF5340 Audio DK headphone output

Nick_RA — Wed, 15 Jan 2025 16:42:18 GMT

I've attached logs for both. The source DK doesn't start streaming until line 1795 when I start playing an audio source and switch the output device to the DK.

The post you linked to is something different, I don't want to loop back line in > headphone out. I just want my broadcast source DK to stream from Line In, and my broadcast sink DK output to Headphone Out.

As I wrote above, the source example project doesn't accept CONFIG_AUDIO_SOURCE_I2S=y

Regarding the UI, there is no UI !! LED1 does not light, none of the switches do anything. I can't see anything in the code to suggest otherwise. Have you actually built & run the code examples using VScode nRF Connect extension "Create new application > copy a sample"?

devzone.nordicsemi.com/.../sink.log devzone.nordicsemi.com/.../source.log

RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Wed, 15 Jan 2025 16:14:07 GMT

[quote user="Nick_RA"]How can I configure both the source and sink to use I2S Line In / Headphone Out?[/quote]

See nRF5340 Audio configuration: Selecting the analog jack input using I2S and this post.

[quote user="Nick_RA"]According to this documentation I set CONFIG_AUDIO_SOURCE_I2S (source app), but I see no option with this name, nor is there anything mentioned for the sink app. [/quote]

Did you add CONFIG_AUDIO_SOURCE_I2S=y to prj.conf file for the debug version /prj_release.conf file for the release version as the instruction? Also, check the .config file under build/Audio to see if it takes effect.

[quote user="Nick_RA"]Also, the LED/Button UI mentioned in the docs doesn't apply so it looks like the docs are inaccurate?[/quote]

Could you elaborate more on the issue?

Are you able to see the LED1 - Blinking Blue? Which Button doesn't work as the doc? Do you check the device log?

Could you provide the terminal log from both Audio DKs?

RE: nRF5340 Audio DK headphone output

Nick_RA — Wed, 15 Jan 2025 14:04:24 GMT

OK that's the config I'm using. And yes, that's the DK board I'm using.

An update: I have now set the source & stream up on 2 separate DKs on separate PCs. Both present themselves as USB audio devices, and I can stream from the source and receive on the sink, using Audacity as a way of monitoring the input source.

Stream 0x20000f88: received 256000 total ISO packets: Valid 255998 | Error 2 | Loss 0
Sending USB audio (count = 2101000)
Sending USB audio (count = 2102000)
Sending USB audio (count = 2103000)
Sending USB audio (count = 2104000)
Sending USB audio (count = 2105000)
Sending USB audio (count = 2106000)
Sending USB audio (count = 2107000)
Sending USB audio (count = 2108000)
Sending USB audio (count = 2109000)
Sending USB audio (count = 2110000)
Stream 0x20000f88: received 257000 total ISO packets: Valid 256998 | Error 2 | Loss 0
Sending USB audio (count = 2111000)
Sending USB audio (count = 2112000)
Sending USB audio (count = 2113000)
Sending USB audio (count = 2114000)
Sending USB audio (count = 2115000)
Sending USB audio (count = 2116000)
Sending USB audio (count = 2117000)
Sending USB audio (count = 2118000)
Sending USB audio (count = 2119000)
Sending USB audio (count = 2120000)
Stream 0x20000f88: received 258000 total ISO packets: Valid 257998 | Error 2 | Loss 0
Sending USB audio (count = 2121000)

So, back to the original question: How can I configure both the source and sink to use I2S Line In / Headphone Out?

According to this documentation I set CONFIG_AUDIO_SOURCE_I2S (source app), but I see no option with this name, nor is there anything mentioned for the sink app. Also, the LED/Button UI mentioned in the docs doesn't apply so it looks like the docs are inaccurate?

RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Tue, 14 Jan 2025 22:25:46 GMT

Does your Audio DK look like this?

It should use nrf5340_audio_dk/nrf5340/cpuapp.

RE: nRF5340 Audio DK headphone output

Nick_RA — Tue, 14 Jan 2025 19:57:47 GMT

OK I am already using 2.9.0.

The user interface mentioned in the testing link doesn't exist, Is that written for a different sample app?

I'll start tomorrow with a fresh copy of the samples and capture logs.

Which of the board configs is best? From memory there is a choice of nRF5340 Audio Dk Application CPU, Network CPU and Non-Secure.

Thanks

Nick

RE: nRF5340 Audio DK headphone output

Amanda Hsieh — Tue, 14 Jan 2025 18:54:33 GMT

Could you build with NCS v2.9.0 and provide the complete logs from the sink and source devices?

Also, check the Testing flow.