USB CDC ACM with AUDIO class on Windows

[abhipray]

I have successfully been using USB CDC ACM class alongside USB Audio with only a MIC feature available on Mac OS. However, on Windows, only USB CDC ACM enumerates in Device Manager. The Audio class enumerates with a failure "Device USB\VID****** had a problem starting". Any ideas what could be causing this discrepancy?

[Øyvind]

Hello,

Can you provide some more information about your setup? What SDK are you using? Can you share your code?

Kind regards,
Øyvind

[abhipray]

#define NRF_CLI_CDC_ACM_COMM_INTERFACE 0 #define NRF_CLI_CDC_ACM_DATA_INTERFACE 1 #define MIC_CONTROL_INTERFACE_NUM 2 #define MIC_STREAM_INTERFACE_NUM 3 

All the other values are the same as in the examples. For USB Audio, I got rid of all the headphone descriptors. Additionally, `app_usbd_audio_sof_interrupt_register` did not work for me for sending audio packets over; I opened a separate ticket for that. Instead I am processing SOF events inside `usbd_user_ev_handler` and sending tx audio frames over within the interrupt. 

[Øyvind]

I'm a little confused. Are you using multiple examples? Have you merged these together? If so, please provide the code. 

[abhipray]

I have merged the code from the two examples(nrf_cli and usb_audio). I cannot share the code since it's tied deeply to the rest of our system. I can sanitize and share relevant pieces however. 

[Øyvind]

Hello, 

Apologies for the late reply. I'm out on travel but will look into your case when I return to the office.

Kind regards,
Øyvind