CONFIG_APP_MODEM_AT_SHELL exposes the modem's AT interface over the host shell using the CMUX user pipe, for modem commands that have no host-side equivalent:
uart:~$ at "AT#XLOG=1"
OK
Note
The pipe only exists once the modem has attached, CMUX runtime power save closes it again when idle (the command then answers modem is not ready, so retry), and any host reboot resets the modem and turns logging back off.
Module documentation:
- Main module — business logic, cloud synchronization, FOTA coordination
- Network module — PPP link to the modem
- Cloud module — nRF Cloud CoAP session, device messages, shadow
- FOTA module — firmware updates of the host application
- Location module — Wi-Fi and cell based positioning