BLE_USER_HID

Check out this example project:

https://github.com/too1/nrf52-usbd-custom-hid-ep 

Hi,Kenneth:

This is a usb_cunstom_hid_device  example,and I just want a Ble_cunstom_hid_device  example,thank you!

Hi,Kenneth:

This is a usb_cunstom_hid_device  example,and I just want a Ble_cunstom_hid_device  example,thank you!

We don't have more examples than also shown here:
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/examples_usb.html

Also there is a documentation for the USB device library:
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/lib_usbd.html