Currently, I have Eclipse MQTT 1.3.1 running flawlessly on my Jolla1.

I note there are 3 files for MQTT on my device, found in /usr/bin/; mosquitto_passwd, mosquitto_sub and mosquitto_pub

I also have a remote control app (as previously discussed with regard to changing button colours when lights are on/off). I would like to utilise MQTT to tell my Jolla1 when a light switch has been activated and change/update the button colour accordingly.

I am quite conversant with MQTT commands, but totally lack any ideas on how to implement/include MQTT in my remote control application.

Side note: MQTT for QML is not part of Qt, it is QtAutomotive, which requires licensing, so no good using official routes.

Any input appreciated, thanks