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Developing binding: how to get all item values? [message #1749457]

Wed, 07 December 2016 00:38

Nathan L.

Messages: 7
Registered: November 2016

Junior Member

As a newbie writing a binding for a serial controlled heat pump, I have run into the problem that when an OpenHab/ESH user changes, say, the set temperature, then I have to send all of the heat pump values, e.g. mode, fan speed, etc., together with the set temperature.

I think I understand that when user changes the value in the UI, then handleCommand() is called and I think I can get the value of the item that has been changed.

But how do I go about getting all the other item values so I can send the command to the thing?

-Nate

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Re: Developing binding: how to get all item values? [message #1749597 is a reply to message #1749457]

Thu, 08 December 2016 13:45

Kai Kreuzer

Messages: 658
Registered: December 2011

Senior Member

Hi Nate,

Sounds like a really stupid API of your heat pump Smile

I think the best way would be to simply store the state within your handler implementation and use these cached values whenever you need to send the full set to the pump. Does that make sense?

Regards,
Kai

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