Having problem retrieving values from thermostat

[iclosem]

I’m having issues with retrieving the temperature from my thermostat. I have a ct50 thermostat and placing a get request to http://192.168.29.189/tstat returns:
`{
“temp”: 71.5,
“tmode”: 3,
“fmode”: 0,
“override”: 0,
“hold”: 0,
“tstate”: 0,
“fstate”: 0,
“time”: {
“day”: 2,
“hour”: 14,
“minute”: 8
},
“t_type_post”: 0
}

This is what my home.items looks like:
``Number Thermostat_Sensor “Temperature [%.1f F]” {http="<[tstat:60000:JSONPATH($.temp)]"}
`
This is what my home.sitemap looks like:
Frame label=“Thermostat Temperature” {
Text item=Thermostat_Sensor label=“Temp [%.1f F]”
}

I made changes to openhab.cfg so create a cache item:
http:tstat.url=http://192.168.29.189/tstat
http:tstat.updateInterval=60000

Instead of using JSONPATH I tried doing a js transformation by placing a file called getTemp.js in the transform directly with:

JSON.parse(input).temp;

and modifying my home.items to:
Number Thermostat_Sensor “Temperature [%.1f F]” {http="<[tstat:60000:JS(getTemp.js)]"}

I even tried calling the url directly instead of a cache and that did not work either. Anyways, I’ve searched around and tried everything and looking at the openhab log it just shows:
2015-11-11 14:35:06.767 [ERROR] [o.u.i.items.ItemUIRegistryImpl] - Cannot retrieve item Thermostat_Sensor for widget org.openhab.model.sitemap.Text

[iclosem]

Any help on this would be greatly appreciated!

[david]

Have a look at this thread. It covers most of the configuration for retrieving and displaying values from these thermostats

How to return current temp from my thermostat?

Hello! I’ve been using a 3M50 Filtrete thermostat for a few years now and it works great. This past weekend I set up a Rasberry Pi and installed OpenHAB. I’ve modified the sitemap & items and have it getting my local temp/date/time. And I’ve read thru the API for the thermostat and have tested several curl commands to make sure they work from the command prompt; and they do! My problem is I have no idea how to implement the curl commands in to OpenHAB. For instance the following command retur…

[iclosem]

Yeah! so I read through that thread first and based everything off what I read in that thread pretty much. Do you see any reason why I would be getting an error?

[david]

I will look at my configuration this weekend to see if anything different stands out.

Till then I’ll ask the obvious. Have you restarted, and confirmed the HTTP binding is installed ?

[iclosem]

I don’t know how to confirm the http binding is installed. This is what I have done. I just ran sudo service openhab stop. Sudo service openhab start. Before that I dropped the http binding (org.openhab.binding.http-1.7.1.jar) into the addons folder. I can’t tell if the HTTP binding is installed or not. The directions on the github just show how to bind it to an item.

[david]

You Should see this in your openhab log at startup

2015-11-13 17:42:51.441 [INFO ] [.service.AbstractActiveService] - HTTP Refresh Service has been started

Also try altering your items file so that is the only line in the file. Could be a typo elsewhere in the file is messing things up

[p912s (Scot)]

Add the following line to your logback.xml file. In the bottom half you’ll see where all of these logger calls are made. Just add it below the last one there.

<logger name="org.openhab.binding.http" level="TRACE" />

Then when you view your openhab.log you’ll see all activity for the http binding.

[iclosem]

ok so the line “HTTP Refresh Service has been started” does not show up in openhab.log anywhere. I erased everything from the items file except for that line and I still get the same issue.

I tried p912s’ suggestion:
<logger name="org.openhab.binding.http" level="TRACE" />

And now nothing is being logged to openhab.log at all.

I think I’m going to just do a clean fresh install of it. Any suggestions on doing a fresh install? I’ve seen a few instructions online but they’re all slightly different.

[p912s (Scot)]

Did you copy the http binding to the addons directory in OpenHAB?

[iclosem]

yes.

copied: org.openhab.binding.http-1.7.1.jar
to: /etc/openhab/configurations/addons

[p912s (Scot)]

This is what the bottom of my logback,xml file looks like.

<!-- temporary workaround for https://bugs.eclipse.org/bugs/show_bug.cgi?id=402750 -->
<logger name="OSGi" level="OFF" />

<!-- temporary workaround to circumvent error messages with any obvious effect -->
<logger name="org.atmosphere.cpr.AtmosphereFramework" level="OFF" />
<logger name="org.atmosphere.cpr.DefaultAnnotationProcessor" level="OFF" />

<logger name="org.openhab.binding.astro" level="DEBUG" />
<logger name="org.openhab.binding.http" level="DEBUG" /> 
<logger name="org.openhab.binding.hue" level="DEBUG" /> 

 <root level="WARN">
	<appender-ref ref="FILE" />
	<appender-ref ref="STDOUT" />
</root>

[p912s (Scot)]

In my openhab.log file I see these lines right at the beginning of a boot cycle.
2015-11-16 11:22:30.390 [DEBUG] [.b.http.internal.HttpActivator] - HTTP binding has been started.
2015-11-16 11:22:30.401 [INFO ] [.service.AbstractActiveService] - HTTP Refresh Service has been started

And a few lines after that.
2015-11-16 11:22:30.403 [DEBUG] [.o.b.http.internal.HttpBinding] - item ‘Tstat_mode’ is fetched from cache
2015-11-16 11:22:30.405 [DEBUG] [.o.b.http.internal.HttpBinding] - updating cache for ‘tstat’ (‘http://192.168.224.50/tstat’)

And then a few lines after that.
2015-11-16 11:22:32.846 [DEBUG] [.o.b.http.internal.HttpBinding] - transformed response is ‘1’
2015-11-16 11:22:32.848 [DEBUG] [.o.b.http.internal.HttpBinding] - item ‘Tstat_temp’ is fetched from cache
2015-11-16 11:22:32.849 [DEBUG] [.o.b.http.internal.HttpBinding] - transformed response is ‘66.5’
2015-11-16 11:22:32.853 [DEBUG] [.o.b.http.internal.HttpBinding] - item ‘Tstat_SetpointH’ is fetched from cache
2015-11-16 11:22:32.855 [DEBUG] [.o.b.http.internal.HttpBinding] - transformed response is ‘67.0’
2015-11-16 11:22:32.856 [DEBUG] [.o.b.http.internal.HttpBinding] - item ‘Tstat_SetpointC’ is fetched from cache
2015-11-16 11:22:32.859 [DEBUG] [.o.b.http.internal.HttpBinding] - transformed response is ‘null’
2015-11-16 11:22:32.861 [DEBUG] [.o.b.http.internal.HttpBinding] - Couldn’t create state of type ‘class org.openhab.core.library.items.NumberItem’ for value ‘null’
2015-11-16 11:22:32.863 [DEBUG] [.o.b.http.internal.HttpBinding] - item ‘Tstat_hold’ is fetched from cache
2015-11-16 11:22:32.864 [DEBUG] [.o.b.http.internal.HttpBinding] - transformed response is ‘1’
2015-11-16 11:22:32.866 [DEBUG] [.o.b.http.internal.HttpBinding] - item ‘Tstat_fan’ is fetched from cache
2015-11-16 11:22:32.867 [DEBUG] [.o.b.http.internal.HttpBinding] - transformed response is ‘0’

[iclosem]

ok that’s weird. I’m going to redo everything off a fresh install.

[iclosem]

Ok I installed a new image and reinstalled openhab. Everything works PERFECTLY! THanks for your time! Also, I noticed you have the same thermostat as me. Would you be willing to share the sitemap/items setup for the thermostat? It would save me some time for sure.

[david]

Yeah! Good News!

[p912s (Scot)]

Glad to hear it’s working!

Most everything in my setup is in the previous post - How to return current temp from my thermostat?