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Retrieving specific value from device


Question

Hi,

 

I retrieved all data of the devices from my HCL with http://192.168.0.33/api/devices and they are written in one file.

Now I am want to retrieve temperature, lux etc from different devices, but I can't seem to find the right way to do it.

 

If I just retrieve data from one device for instance 172 with call http://192.168.0.33/api/devices/172 it works:

 

json.properties.value will do the trick

 

But I don't want to sent commands for each device to retrieve data. Is there a way to retrieve specific values from the all devices json table?

I tried json.properties[51].value, because this device has the header 51 (see code here below), but that does not work.

Anyone an idea how to get the desired value?

 

Thx!

Rik

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4 minutes ago, Rikbast said:

json.properties[51].value

I understand what you are trying to do... That's on a Domoticz? Never mind, json should actually decode to the same Lua structure as a HomeCenter.

 

I would guess:

 

json[51].properties.value

 

Because "devices" is an array of all your IDs, then per device you have got properties...

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  • Yes! That did the trick, but I should use [52] as the table starts with 0 as first device (the controller).

    thx Peter.

     

    Yes, I am retrieving data from HCL to Domoticz and use these variables in LUA scripts.

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    16 hours ago, Rikbast said:

    That did the trick, but I should use [52] as the table starts with 0 as first device (the controller).

     

    Just to be on the safe side:

     

    Each device on your HCL has an "device ID", and that id is:

     

    json[... some number here ...].id

     

    In your example: json[52].id is 172 and this matches call http://192.168.0.33/api/devices/172

     

    The number 172 is "stable" as long as you only do "soft reconfigure" on that device. If you do "reconfigure" or exclude and include, the HCL assigns a new "id"

     

    Almost all scripts on this forum refer to that id (172).

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  • Inquirer
  • Hi,

     

    I will keep an eye on this when necessary. Let's see where I get with these API calls, if the HCL can cope with API call of all devices every 2 minutes.

    Next step: sent API Post to HCL to open/close rollershutters when LUA scripts in domoticz says so.

    thx!

     

    just maybe I can use HCL scenes also, but I need for example also sun UV index and sun radiation value for controlling rollershutter. I use weather underground in Domoticz, I don't think it is available for Fibaro?

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