Hi,
I modified your USBD BLE UART Example by commenting out the button and LED code to run on a dongle with J-Link debugger soldered on.
I removed the bootloader and set NRF_UICR->REGOUT0 to 3.3V, to ensure proper voltage.
The example runs, all USBD-functions return NRF_SUCCESS when starting up. Also the virtual comport is listed on the PC.
When sending data from a terminal, nothing happens. the cdc_acm_user_ev_handler is never fired.
Is there someting I'm missing?
Working with nRF5_SDK_15.2.0 and debugging with SES.
Best regards
Gerry