nrf9160 Serial LTE Modem example

[__markus__]

In the next step, I compiled the “Serial LTE Modem” firmware example from the examples folder and flashed it onto the nrf9160DK.

The “Serial LTE Modem” application works, but except for the AT commands AT#XCMUX and AT#XPPP.

I get the same error messages from the modem as in the Quick Start example.

If I now enable PPP and CMUX support in the project, the “Serial LTE Modem” project can no longer be compiled.

What settings do I still need to successfully compile the “Serial LTE Modem” project with PPP and CMUX support?

[Øyvind]

Hello, 

What version of modem FW are you running on your nRF9160DK?

Kind regards,
Øyvind

[__markus__]

Hello,

I am using the modem firmware mfw_nrf9160_1.3.7

Kind regards,

Markus

[Øyvind]

__markus__ said:

I am using the modem firmware mfw_nrf9160_1.3.7

Thanks for confirming

How are you building the Serial LTE Modem sample with support for CMUX and PPP? I tested here in VS Code building with config-ppp.conf and config-cmux.conf, building for the nRF9151DK (what I have at hand at the moment). 

When starting and setting AT+CFUN=1 I get the following response from PPP and CMUX: 

#XPPP: 1,0

> at#xcmux?
#XCMUX: 1,2

More of less the same as described in the CMUX documentation and PPP documentation

What settings do I still need to successfully compile the “Serial LTE Modem” project with PPP and CMUX support?

From the configuration files chapter in the application desciptionion  you will find the needed configuration files needed to build the SLM with CMUX and PPP support (mentioned above).

Kind regards,
Øyvind

[__markus__]

Hello Øyvind,

I now have the serial LTE modem example running. My challenge was to integrate the appropriate *.conf and *.overlay files with the nRF GUI into the project.

[Øyvind]

Happy to hear you found the solution!

Kind regards,
Øyvind