Can I use a custom USB connection for the nRF5340 DK

[DennMue]

Hello,

I am currently doing an internship and I am working with the nRF5340 DK.

Until now I have tested the "Thread: CoAP Server" and "Thread: CoAP Client" examples and modified them a bit. Everything works fine.

Now I want to create a custom USB connection.

My Questions are:

Is it possible to use a custom USB connection and not the serial port? So, when you plug in the nRF5340 DK, you can see it like a USB-Stick with the product ID of the board.

If it is possible, is there an example?

I am new to this topic, so I hope someone can help me. If you need more information, please let me know.

[Øyvind]

Hello, 

There are currently no official USB samples for the nRF5340. Have you looked at our nRF Desktop application, this uses nRF52840 and has a USB state module from which you get some inspiration. From the Zephyr repo you can also have a look at the USB device stack. Also, have a look at the USB samples in the Zephyr repo

Hope this helps on your path. 

[DennMue]

Hello,

thank you very much for your reply. I looked into it but I am not sure if HID is the right thing.

What I am trying to achieve is a simple data pipe between a windows application and my board. Practically like the virtual COM but with different vendor / product IDs. Biggest problem at the moment is a right windows driver. The driver should be configured for the dedicated vendor / product IDs and shows my board as a dedicated device, that I can attach to from my windows application.

Implementing dedicated USB (configuration) descriptors on the board is not the real problem. But we don´t use Linux.

Best regards,

Dennis

[Øyvind]

Hi Dennis, 

I've contacted our USB experts. We do have one unofficial sample based on cdc_acm sample to use on the nRF52840 DK as a UART-USB bridge. You can set the vid/pid with Kconfig, just search for VID or PID in menuconfig.

There is also a driver available which you could have a look at here.

Kind regards,
Øyvind