nRF Connect SDK with External GSM 7600 with nRF52840

[Muqarrab]

Hi,
I am working on nRF52840. Previously I was using the nRF SDK as there was no library available for external GSM(MQTT) so I am moving to nRF Connect SDK. I have successfully set up the environment now I want to communicate nRF52840 with external GSM(SIMCOM 7600G) and send data over the MQTT library. How can I start? Is there any tutorial? 

[Håkon Alseth]

Hi,

 

There's no direct tutorial to do exactly what you need, but in general you should start to build your application piece-by-piece, and verify each step along the way, to ensure that the different blocks/modules are working.

Given the other thread that you have open:   FATAL ERROR: command exited with status 1 

I think that this is a good starting point, to get the communication with the external device, then add networking capabilities to this sample.

 

To get the basics up-and-running, I can strongly recommending doing the nordic developer academy courses:

https://academy.nordicsemi.com/

 

Kind regards,

Håkon

[Muqarrab]

Hi,

Can I use this example to connect and send data to the MQTT server?

MQTT Publisher

[Håkon Alseth]

Hi,

 

Technically, with this configuration:

https://docs.zephyrproject.org/3.0.0/reference/kconfig/CONFIG_MODEM_SOCKET.html

You should be able to offload the gsm modem to use zephyr sockets, which again should allow you to use socket based libraries, like mqtt, on top of that again.

 

That being said, we do not have any hands-on experience working with the specific modem that you're using, so it might be beneficial to ask the zephyr community if you're stuck on the simcom 7600g network configuration.

 

Kind regards,

Håkon

[Muqarrab]

I have uploaded the code and getting the following error.

[Håkon Alseth]

Did you also add the overlay for your modem?

What does the full log state?

 

Kind regards,

Håkon