USB CDC ACM COM port name (nrf5340)

[Jason]

Hi:

I download the samples/subsys/usb/cdc_acm sample to nrf5340DK, and then connect the USB port to the PC,

there is a new COM3 port named 'USB 串行设备(COM3)' in the Device Manager(Windows 10).

'USB 串行设备' means 'USB serial device'

From what I understand the COM name should be "Zephyr CDC ACM sample COM", and Manufacture should be ZEPHYR according to the below configuration 

CONFIG_USB_DEVICE_MANUFACTURER="ZEPHYR"

CONFIG_USB_DEVICE_PRODUCT="Zephyr CDC ACM sample"

How can I change the COM name displayed in the Device Manager?

This is important, we have a PC tool that needs to detect the nrf5340 USB CDC automatically, so we need to filter out other COM ports.

By the way, the USB CDC  ACM  driver is installed by Windows 10 automatically, do I need to install any driver? 

Thanks!

[Einar Thorsrud]

Hi,

Windows depends on a mapping between the VID/PID and names. So in order to recognize the device as a specific device you need to tell windows about it in form of a .inf file.  Here is an example .inf file (that is provided in the old nRF5 SDK) that you can use as reference:

6136.usb_drivers.zip