MQTT to Point Item

Setup, Configuration and Use Items & Sitemaps
1

I am sending a location via MQTT to OH in the format of a string “lat,long”. I have tried to map this channel to a point item but it seems the MQTT binding is not updating the item. No error in the log. Does anyone know if this is possible?

2

The docs say this should work. I assume you are trying to link it to a Location Item which carries a PointType state.

Assuming that you have done all the usual debugging to verify that the message is in fact being published and your Channel is in fact configured correctly, I recommend getting some debug or trace logs and opening an issue.

Here is the logging config I use periodically to shunt the MQTT logs to it’s own log file.

## MQTT
#log4j2.logger.mqtt.name = org.eclipse.smarthome.binding.mqtt
#log4j2.logger.mqtt.level = TRACE
#log4j2.logger.mqtt.additivity = false
#log4j2.logger.mqtt.appenderRefs = MQTT
#log4j2.logger.mqtt.appenderRef.mqtt.ref = MQTT

#log4j2.appender.mqtt.name = MQTT
#log4j2.appender.mqtt.type = RollingRandomAccessFile
#log4j2.appender.mqtt.fileName = ${openhab.logdir}/mqtt.log
#log4j2.appender.mqtt.filePattern = ${openhab.logdir}/mqtt.log.%i
#log4j2.appender.mqtt.immediateFlush = true
#log4j2.appender.mqtt.append = true
#log4j2.appender.mqtt.layout.type = PatternLayout
#log4j2.appender.mqtt.layout.pattern = %d{dd-MMM-yyyy HH:mm:ss.SSS} [%-5.5p] [%-50.50c] - %m%n
#log4j2.appender.mqtt.policies.type = Policies
#log4j2.appender.mqtt.policies.size.type = SizeBasedTriggeringPolicy
#log4j2.appender.mqtt.policies.size.size = 10MB
#log4j2.appender.mqtt.strategy.type = DefaultRolloverStrategy
#log4j2.appender.mqtt.strategy.max = 10
3

Thank you - I’ll dig into this this weekend