[SOLVED] Reading Values form a weatherstation using HTTP Binding

Setup, Configuration and Use Beginners
1
  • Platform information:
    • Hardware: Raspberry PI4
    • openHAB version: openHabian 4.1.1

I want to get Values of my Weather Station using a HTTP Url Thing.
If I use a browser and call the Url I get this xml

<observations xmlns="">
   <observations>
      <observations>
         <neighborhood>Markersdorf-Haindorf</neighborhood>
         <country>AT</country>
         <solarRadiation>38.53</solarRadiation>
         <lon>15.5</lon>
         <epoch>1708329050</epoch>
         <lat>48.188999</lat>
         <uv>0</uv>
         <winddir>33</winddir>
         <humidity>84</humidity>
         <qcStatus>1</qcStatus>
         <metric>
            <temp>9</temp>
            <heatIndex>9</heatIndex>
            <dewpt>7</dewpt>
            <windChill>9</windChill>
            <windSpeed>2</windSpeed>
            <windGust>5</windGust>
            <pressure>1031.731014762</pressure>
            <precipRate>0</precipRate>
            <precipTotal>0</precipTotal>
            <elev>248</elev>
         </metric>
      </observations>
   </observations>
</observations>

So I created a new Thing with the url and added Channel
In state Information I added a Regex witch I tested in an expression Tester.

UID: http:url:5ebbe80f4b
label: Wetterstation
thingTypeUID: http:url
configuration:
  authMode: BASIC
  ignoreSSLErrors: false
  baseURL: http://192.168.1.10?format=xml&units=m
  delay: 0
  stateMethod: GET
  refresh: 600
  commandMethod: GET
  contentType: text/html
  timeout: 3000
  bufferSize: 2048
location: Garten
channels:
  - id: Sonneneinstrahlung
    channelTypeUID: http:string
    label: Sonneneinstrahlung
    description: ""
    configuration:
      mode: READONLY
      stateTransformation: REGEX:<solarRadiation>([\d.]+)

Than I created an Item with this channel.
So I expected to see the value 38.53.
But there is only NULL shown and I don’t know how to search the problem

2

How often is your thing being refreshed. The value stays NULL until the next update.
What typo is your item of? Number or string? Maybe for testing purposes change it to string and wait for the next update.

edit: found it. 600…

3

I defined it as string in the Channel of the Thing.
If I Add it to the Item it is also displayed as string.
Is it possible to see when the Thing is updated last time an with which values?
This is my definition of the Item

label: Sonneneinstrahlung
type: String
category: sun
groupNames:
  - Wetterstation
tags:
  - Point
4

I found the problem by setting the loglevel for http binding to trace.

stateTransformation: REGEX:.*<solarRadiation>([\d.]+).*