mqtt not working in SDK2.5.0

RE: mqtt not working in SDK2.5.0

Charlie — Wed, 10 Apr 2024 13:40:27 GMT

Hi Dannis,

It is still possible to use the zephyr MQTT library directly instead of MQTT helper on NCS 2.5.0.

Exercise 1 – Nordic Developer Academy (nordicsemi.com) provide reference about how to use Zephyr MQTT library, it covers all NCS versions, so you can

refer to the following codes to adapt your codes to new NCS versions.

cell-fund/v2.4.0-v2.x.x/lesson4 at master · NordicDeveloperAcademy/cell-fund · GitHub

Best regards,

Charlie

RE: mqtt not working in SDK2.5.0

DannisWong — Wed, 10 Apr 2024 09:38:54 GMT

Hi Charlie

thanks for your reply, I need to work on 2.5.0 due to other feature, actually my project not only mqtt, I need to add other feature on it, any suggestion to merge other code into mqtt sample project?

Best Regards

Dannis

RE: mqtt not working in SDK2.5.0

Charlie — Wed, 10 Apr 2024 09:32:43 GMT

Hi Dannis,

Sorry to hear your struggling.

I assume you are working with nRF9160: Simple MQTT — nRF Connect SDK 2.2.0 documentation (nordicsemi.com) on nRF9160 device before. A new library named MQTT helper has been introduced since NCS v2.3.0 MQTT — nRF Connect SDK 2.6.0 documentation (nordicsemi.com).It also added support for nRF7002DK with WiFi connection.

The reason there is no main.c inside is that the new sample introduced Zephyr bus (zbus) — Zephyr Project documentation (nRF Connect SDK) (nordicsemi.com) to organize the codes, which can make the application codes simpler and structured. Its MQTT configuration is manged in transport module sdk-nrf/samples/net/mqtt/src/modules/transport/transport.c at v2.6-branch · nrfconnect/sdk-nrf · GitHub.

I suggest you switch directly to the latest NCS v2.6.0 instead of NCS v2.5.0 since you just start your codes' adaption. Please share the log printout if the MQTT sample still not work as expect.

Best regards,

Charlie