Problems of combing MQTT-SN library in NRF SDK for Thread with Zephyr

[Botong Ou]

Hi everyone,

Currently, I was developing an application on top of Zephyr. I notice that NRF52 SDK provides library for MQTT-SN protocol. However, my application needs to use the abstraction from Zephyr and Zephyr doesn't provide any library for MQTT-SN. I am wondering if there is a way to only port the MQTT-SN library into Zephyr.

Best,

Botong

[Håkon Alseth]

Hi Botong,

 

Unfortunately, MQTT-SN isn't available in zephyr, so any porting has to be done manually.

Please note that at this point in time, Thread in NCS is in a developer state, and not production.

 

Kind regards,

Håkon

[Botong Ou]

Thanks for your help!

I think this is precisely not a problem of NCS, more of the NRF SDK for Thread and Zigbee.

I can see there is a folder called mqtt_sn_client in NRF52_SDK_4.1.0_Thread/components/thread/mqtt_sn which seems to implement the gateway discovery and packet sender/receiver for mqtt-sn.

I am wondering if it is possible to manually port this into zephyr or if there was any example to port a component into Zephyr before.

Currently, I am trying to use the OpenThread API embedded in Zephyr to join a thread network, and hopefully, with the help of the MQTT-SN from NRF52_SDK, I am able to discover the gateway and connect to it. I want to know if this is a good way to achieve MQTT-SN in Zephyr.

[Håkon Alseth]

Hi,

 

Botong Ou said:

I am wondering if it is possible to manually port this into zephyr or if there was any example to port a component into Zephyr before.

It is possible, but as mentioned; you have to manually port it. We have not gotten to the point where we have had the time to add it.

As mentioned, Thread in NCS is a work-in-progress at this time.

 

Kind regards,

Håkon 

[Botong Ou]

Thanks, let me take a try