USB Audio device example in SDK 15.2.0 doesnt work ?

[Or]

Hi,

I compiled and flashed my nrf52840-DK with "examples/peripheral/usbd_audio" and I noticed a few things:

1. Under Linux (Ubuntu 18.04) the microphone isn't listed.
2. Under Windows (10) I can select the speakers as output device and when I play something I dont see activity on the microphone when I select it as input device (it's supposed to loopback)

Am I missing something ?

[Kenneth]

Seems SDK15.2 of \usbd_audio works, but SDK15.3 doesn't, if you can you confirm then I will report it.

Kenneth

[Or]

I've tested all versions from 15.0.0 upwards. Conclusions:

1. It does work on windows (I misconfigured the mic volume so I didnt see activity) - ALL versions of usb_audio work on windows 10; both compiled and precompiled versions (the ones in the hex folder)
2. The microphone isnt detected under Linux no matter the version or the use of compiled/precompiled
3. If I remove the headset device and change the mic to this:
   #define MIC_INTERFACES_CONFIG() APP_USBD_AUDIO_CONFIG_IN(0, 1)
   .. the mic is detected under Linux and works (in my code) however the output is distorted (same problem in my other questions)

[Kenneth]

I have reported it internally, I'll keep you updated on findings.

Kenneth

[Or]

Sorry to bother you, but is there any progress ?

[Kenneth]

Let me ping the team again.

Kenneth

[jsaksris]

any update on this?

I have tried this on nRF5_SDK_17.0.0_9d13099 and it does not seems to work.

I can output the audio, LED1(USB bus), LED3(USB stream receive), and LED4(USB stream transmit) is on but not LED2(USB device library).

The play back seems to work fine but when try to record Audacity receive data for a split second and stuck.

I'm on MacOS