Mixing AT commands and PPP

[daan]

Hi,

At our factory, the employees would like to have the AT command set exposed of our nRF9160 devices.

Since we would like to use PPP-sessions with our modem, we would like to mix these two up: add a custom AT command to the AT command set that allows us to switch into PPP mode (and an escape sequence to move back into AT command mode).

The way zephyr seems to work: either you enable AT host commands, or you enable PPP mode. there is no AT host command that allows you to control to switch into PPP mode.

I've started to play around with the 'serial_lte_modem' application - this allowed me to add custom AT commands, however, I cannot really find a neath way of accessing the PPP driver from here. Does anyone have hints on how to achieve this?

Thanks! Daan

[Didrik Rokhaug]

Hi,

I haven't looked much into PPP, or how Zephyr handles it, but I know it is supported in our Modem Shell sample: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.2/nrf/samples/nrf9160/modem_shell/README.html

The sample also let you send AT commands (though I do not know if you can do that while the PP interface is up). However, note that you must use the "at" shell command to send AT commands. See the Modem Shell documentation for more information.

Best regards,

Didrik

[daan]

Thanks!