nRF52840 BLE MQTT with SIMCOM GSM

[Muqarrab]

Hi,

I am using nRF52840 and communicating with Simcom GSM(Sim7600g).

1- Is there any example code/ Library to connect with the MQTT server?

2- Can I use this example code MQTT using nRF52840 and sim7600? or this is for nRF9160? 

3- I have installed nRF5_SDK_17.0.2_d674dde SDK but have not found MQTT example?

Thanks!

[Didrik Rokhaug]

Hi,

That example was part of the IoT SDK, which had been deprecated by the time nRF 5 SDK v17.0.2 was released.

That example could probably be used with the sim7600g, but you would have to create the driver for the modem and the glue to make it work with the IoT SDK yourself.

I would instead recommend that you use the nRF Connect SDK, as we already have quite good support for external GSM modems there. I don't see the sim7600g in the list of supported modems, but there is a driver for the sim7080. It si probably not much work to modify that driver to support the sim7600g.

I've added some relevant links to the nRF Connect SDK documentation below, as well as a link to our nRF Connect SDK Fundamentals course.

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/nrf/index.html

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/zephyr/connectivity/networking/index.html

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/zephyr/connectivity/networking/api/gsm_modem.html

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/zephyr/connectivity/networking/api/mqtt.html

https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/

Best regards,

Didrik

[Muqarrab]

Thanks Didrik Rokhaug for answering.
I have develpoed application(ble_peripheral) on nRF5_SDK_17.0.2_d674dde SDK. And now want to add support of MQTT with GSM in that firmware. What will be best way to add GSM MQTT support in that firmware? Any example code?

[Didrik Rokhaug]

I would anyway recommend that you look into the nRF Connect SDK. See this link for a statement regarding the nRF Connect SDK and the nRF5 SDK:  nRF Connect SDK and nRF5 SDK statement 

That said, you should be able to move the IoT SDK from v16.0.0 of the nRF5 SDK to the version you are using. You must then add your GSM modem as a backend for the socket API, and then it should work.