Stuck in simple http GET

[taisto_onnela]

Hi. Migrating to OH3.2 from 2.4 and are totally lost in a simple (embarrassing) issue…

I am trying to send simple GET commands to an Arduino triggered by switches

Requests I am trying to create is:
http://10.0.1.222?OUT6=true/false
http://10.0.1.222?OUT7=true/false
http://10.0.1.222?OUT8=true/false

So how should I configurate? Should I use string switch or contact as Item?
Just confused right now
this is my starting point:

UID: http:url:arduinopool
label: Pool Arduino
thingTypeUID: http:url
configuration:
authMode: BASIC
ignoreSSLErrors: false
baseURL: http://10.0.1.222
delay: 0
stateMethod: GET
refresh: 30
commandMethod: GET
contentType: text/html
timeout: 3000
bufferSize: 2048
channels:

• id: Channel6
  channelTypeUID: http:string
  label: Channel6
  description: “”
  configuration: {}
• id: Channel7
  channelTypeUID: http:string
  label: Channel7
  description: “”
  configuration: {}
• id: Channel8
  channelTypeUID: http:string
  label: Channel8
  description: “”
  configuration: {}

Any help is appreciated !
Best Regs
Taisto

[denominator (James Bowler)]

Try a switch channel like

  - id: Channel6
    channelTypeUID: http:switch
    label: Channel6 label
    description: ""
    configuration:
      onValue: "true"
      offValue: "false"
      stateExtension: ?OUT6=

[taisto_onnela]

Hi and tnx for answer.
Added as you suggested and linked a switch Item.
In my log i can see:
[TRACE] [nding.http.internal.HttpThingHandler] - Sending to ‘http://10.0.1.222?OUT8=’: Method = {GET}, Headers = {Accept-Encoding: gzip, User-Agent: Jetty/9.4.43.v20210629}, Content = {null}
And Arduino is responding 200

but the OUT8=true/false value is missing in the URL.
What have I missed?

UID: http:url:arduinopool
label: Arduino Pool
thingTypeUID: http:url
configuration:
authMode: BASIC
ignoreSSLErrors: false
baseURL: http://10.0.1.222
delay: 0
stateMethod: GET
refresh: 300
commandMethod: GET
contentType: text/html
timeout: 3000
bufferSize: 2048
channels:

• id: Channel6
  channelTypeUID: http:switch
  label: LabelChannel6
  description: “”
  configuration:
  onValue: “true”
  mode: READWRITE
  offValue: “false”
  stateExtension: ?OUT6=
• id: Channel7
  channelTypeUID: http:switch
  label: LabelChannel7
  description: “”
  configuration:
  onValue: “true”
  mode: READWRITE
  offValue: “false”
  stateExtension: ?URL7=
• id: Channel8
  channelTypeUID: http:switch
  label: LabelChannel8
  description: “”
  configuration:
  onValue: “true”
  mode: READWRITE
  offValue: “false”
  stateExtension: ?OUT8=

[rossko57]

@taisto_onnela

refresh: 300

Remember this is a bi-directional binding. It will automatically send to a URL and try to use the returned data from the remote service to update your channels/Items
You don’t want that, if you want to send HTTP to remote service in response to commands to your Items/channels.

So set refresh to zero, ignore stuff to do with statexxx, and look at commandxxx parameters like commandExtension

[hafniumzinc (T)]

@rossko57

So set refresh to zero

Huh, is this valid? If so it’s a feature that could do with documenting on the binding page.

At the moment I’d assumed command-only HTTP Things were defined if all their Channel mode was set to WRITEONLY

[rossko57]

Setting any channels to write only does not stop the Thing read polling at the requested intervals - you might have a mix of channels, for example.

[hafniumzinc (T)]

@rossko57

you might have a mix of channels, for example.

Right, but that’s why I mentioned

@hafniumzinc

all their Channel mode was set to WRITEONLY

i.e. no mix.

[taisto_onnela]

OK tried stateExtension and commandExtension “?OUT8=” with same result.

‘http://10.0.1.222?OUT8=’ here I want to add true or false

So what is the trick to get the value from switch Item into the url?
Can not find anything about that in docs.

regs
Taisto

[hafniumzinc (T)]

@taisto_onnela

Can not find anything about that in docs.

It’s there, at the bottom of the docs.

Combine that with an onValue: true and offValue: false

[rossko57]

Off topic

@hafniumzinc

I.e. no mix

Don’t care, you are allowed to have a mix is the point. So channel read/write settings do not control the HTTP Thing to read-poll or not. That’s the refresh parameter’s job.

[hafniumzinc (T)]

@rossko57

That’s the refresh parameter’s job.

So it’s a fact that refresh: 0 means disabling polling?

[Oliver2 (Oliver)]

just to broaden your options: you could create a rule and pass over the value to your get request. It is a one-liner

sendHttpGetRequest("http://10.0.1.222/?OUT8=" + variable)

[taisto_onnela]

no ‘0’ is not allowed, but I think ‘’ blank stops…

[taisto_onnela]

Cool Oliver will try, but I prefer doing it in channel (if possible)
/taisto

[taisto_onnela]

@hafniumzinc

Combine that with an onValue: true and offValue: false

I have done that from start …hmm frustrating

My Code
UID: http:url:arduinopool
label: Arduino Pool
thingTypeUID: http:url
configuration:
authMode: BASIC
ignoreSSLErrors: false
baseURL: http://10.0.1.222
delay: 0
stateMethod: GET
refresh: 300
commandMethod: GET
contentType: text/html
timeout: 3000
bufferSize: 2048
channels:

• id: Channel8
  channelTypeUID: http:switch
  label: LabelChannel8
  description: “”
  configuration:
  onValue: “true”
  offValue: “false”
  commandExtension: /?OUT8=

[hafniumzinc (T)]

@taisto_onnela

I have done that from start

Right, except this snippet still doesn’t show the correct use of the URL formatter linked previously.

You need to use %2$ at the end of your commandExtension