SDK NCS 2.5.0
nRF52840DK
using the nrf/samples/bluetooth/peripheral_uart example
i have both the prj.conf and prj_cdc.conf selected
I add the usb.overlay
the project builds and the USB enumerates.
I can connect to the DK from the nrf Connect mobile app and enable notifications.
i can connect to the DK through the Serial Terminal app in the desktop tools.
I can send data from the phone to the DK reliably.
i can only send data from the serial terminal to the mobile app once.
the connection is maintained and the mobile app can continue to send to the DK with the result appearing in the serial terminal
but the data is not sent from the serial terminal to the mobile app
is there a buffer that needs to be filled first or is there an issue with the USB CDC
