I would like to read an MQTT feed from my solar power system dynamically in OH2.
I have done the following:
- Setup a MQTT broker in my mqtt.cfg - works. (KeepAlive set to 120s)
- Setup a String item with the MQTT path - works.
- How do I send a regular “Keep Alive” message? The external mqtt broker is setup to go to sleep if no such message is received to conserve power/cpu. Something like: “R/1a2b3c4d5e6f/system/0/Serial” needs to be sent regularly to receive the feeds.
- How do I have the String item in my sitemap refresh continiously to get the latest readout?
I have tested the above - if I send the KeepAlive manually and refresh my UI I can actually see the value as a once off.
I have really searched - but cannot find any answer. Please assist.