ITEAD Sonoff TelePeriod item

Setup, Configuration and Use Items & Sitemaps
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1

I now have a bunch of Sonoff devices. And I’d like to set and read the TelePeriod for them.
What I’d like to achieve is to have the TelePeriod on a high frequency if the device is ON and on a low frequency if it’s OFF.

So now, what do I do:

  1. I send the TelePeriod command, if the item state changes
  2. the Sonoff responds with stat/sonoffHeatingIR/RESULT = {"TelePeriod":"20"}

so far so good. But what’s not so good, also if the device gets some other command (e.g. POWER ON/OFF), the topic stays the same stat/sonoffHeatingIR/RESULT, so I get ERRORs in my log, if the device responds to commands.

21:44:44 MQT: stat/sonoffHeatingIR/RESULT = {"POWER":"OFF"}
...
2018-01-17 21:44:45.516 [ERROR] [.mqtt.internal.MqttMessageSubscriber] - Error processing MQTT message.
org.openhab.core.transform.TransformationException: Invalid path '$.TelePeriod' in '{"POWER":"ON"}'
	at org.openhab.core.transform.TransformationHelper$TransformationServiceDelegate.transform(TransformationHelper.java:67) [200:org.openhab.core.compat1x:2.2.0]
	at org.openhab.binding.mqtt.internal.MqttMessageSubscriber.processMessage(MqttMessageSubscriber.java:138) [219:org.openhab.binding.mqtt:1.11.0]
	at org.openhab.io.transport.mqtt.internal.MqttBrokerConnection.messageArrived(MqttBrokerConnection.java:556) [225:org.openhab.io.transport.mqtt:1.11.0]
	at org.eclipse.paho.client.mqttv3.internal.CommsCallback.deliverMessage(CommsCallback.java:475) [225:org.openhab.io.transport.mqtt:1.11.0]
	at org.eclipse.paho.client.mqttv3.internal.CommsCallback.handleMessage(CommsCallback.java:379) [225:org.openhab.io.transport.mqtt:1.11.0]
	at org.eclipse.paho.client.mqttv3.internal.CommsCallback.run(CommsCallback.java:183) [225:org.openhab.io.transport.mqtt:1.11.0]
	at java.lang.Thread.run(Thread.java:748) [?:?]

my item Looks like this:

Number Sensoren_SonoffHeatingIR_TelePeriod	"IR-Heizung Intervall [%d s]" 	{ mqtt=">[mqttoh2:cmnd/sonoffHeatingIR/TelePeriod:command:*:default],<[mqttoh2:stat/sonoffHeatingIR/RESULT:state:JSONPATH($.TelePeriod)]" }

is there a way to avoid the ERRORs?

2

Use the REGEX to only match on those messages that contain TelePeriod. Something like

.*TelePeriod.* should do it.

Put that after your JSONPATH;

<[mqttoh2:stat/sonoffHeatingIR/RESULT:state:JSONPATH($.TelePeriod):.*TelePeriod.*]

All messages that fail to match the REGEX will be ignored.

1 Like
3

Thanks - works as usual! :wink:

1 Like