Concatenating an URL with values from sensors. Topic is solved

[radiochild]

Hi, I am running Domoticzs on a Synology NAS and I am trying to send a value to an ESPEasy LED display. I can send the dummy info, just as a straight number, e.g.

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commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..333 }

but I can't substitute a sensor value for the number, e.g.

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commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..sensortemp}

commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..['Sensor_Temperature']}

The errors usually relate to concatenation a global or things like that.
I don't understand the examples and other posts I have read. Can someone please explain if this can work or how to do it if it can't?

[waaren]

Hi, I am running Domoticzs on a Synology NAS and I am trying to send a value to an ESPEasy LED display. I can send the dummy info, just as a straight number, e.g.

Code: Select all

commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..333 }

but I can't substitute a sensor value for the number, e.g.

Code: Select all

commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..sensortemp}

commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..['Sensor_Temperature']}

The errors usually relate to concatenation a global or things like that.
I don't understand the examples and other posts I have read. Can someone please explain if this can work or how to do it if it can't?

Yes it can work. If you post the complete script it is easier to comment on what modifications are needed to get this to work.

[radiochild]

Hi Waaren, thanks for having a look for me.

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-- Variables
baseurlESPEasy = "http://192.168.1.xx/control?cmd="
commandArray =  {}
if devicechanged['Undercot_Temperature'] then
commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..333 }
end

This works.
I just can't figure out how to put a value from a sensor where the '333' is.

[waaren]

Code: Select all

-- Variables
baseurlESPEasy = "http://192.168.1.xx/control?cmd="
commandArray =  {}
if devicechanged['Undercot_Temperature'] then
commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..333 }
end

This works.
I just can't figure out how to put a value from a sensor where the '333' is.

This will send the same as in your example with the temperature from sensor Undercot_Temperature. (dzVents)

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-- Send Undercot Temp

return {
    on =        {       devices   =   { "Undercot_Temperature" }},                        
              
    logging =   {       level   =   domoticz.LOG_DEBUG,                                   
                        marker  =   "Send undercot" },                                           

    execute = function(domoticz, undercot )
   
        local baseurlESPEasy = "http://192.168.1.xx/control?cmd=" 
        domoticz.openURL({ 
                            url = baseurlESPEasy .. "7dt" .. undercot.temperature,
                            method = "GET" 
                        })
    end
}

[radiochild]

Hi Waaren.
I tried your code and I get;

Error: EventSystem: in Portable LED Display: [string "-- Send Undercot Temp ..."]:6: attempt to index global 'domoticz' (a nil value)

I am using this in Events. I realise I didn't mention that before, does that make a difference?

[jvdz]

So you have an LUA event script and you want to send the new received value for ... to ESPEASY....right?
Something like this should be close for a Device Lua event script:

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baseurlESPEasy = "http://192.168.1.xx/control?cmd="
commandArray =  {}
if devicechanged['Undercot_Temperature'] then
commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'.. devicechanged['Undercot_Temperature']}
end

.. but are you sure about that ESPEASY URL? Does that work directly from a browser?

Jos

[radiochild]

Hi jvdz,
Thank you! That worked a charm. The url works in a browser for ESPEasy. It now works in Domoticz. It's just an update to a MAX7219 LED display. So simple but I just couldn't figureit out.

Thank you again, Waaren and jvdz for helping me out.

[waaren]

Hi Waaren.
I tried your code and I get;

Error: EventSystem: in Portable LED Display: [string "-- Send Undercot Temp ..."]:6: attempt to index global 'domoticz' (a nil value)

I am using this in Events. I realise I didn't mention that before, does that make a difference?

Hi radioChild, my script is dzVents. Choose dzVents in the event editor and copy paste the script ..

[MarloCZ]

Hello, please can someone advise me, I try the script written above, but my display shows nothing.
When I enter a command via URL, it will show up on the display.
Thanks for the help

Code: Select all

-- Send Undercot Temp

return {
    on =        {       devices   =   { "Outdoor_thermometer" }},                        
              
    logging =   {       level   =   domoticz.LOG_DEBUG,                                   
                        marker  =   "Send undercot" },                                           

    execute = function(domoticz, undercot )
   
        local baseurlESPEasy = "http://192.168.7.71/control?cmd=" 
        domoticz.openURL({ 
                            url = baseurlESPEasy .. "7dt" .. Outdoor_thermometer,
                            method = "GET" 
                        })
    end
}

Device:
48 Dummy 14080 1 Outdoor_thermometer Temp LaCrosse TX3 2.7 C

LOG:
2020-02-19 06:57:59.694 Status: dzVents: Error (2.4.19): Send undercot: An error occured when calling event handler Displej-1
2020-02-19 06:57:59.694 Status: dzVents: Error (2.4.19): Send undercot: ...Domoticz\scripts\dzVents\generated_scripts/Displej-1.lua:13: attempt to concatenate global 'Outdoor_thermometer' (a nil value)
2020-02-19 06:57:59.694 Status: dzVents: Info: Send undercot: ------ Finished Displej-1
2020-02-19 06:58:02.679 EventSystem: Event triggered: Termostat-Loznice_2

[waaren]

Hello, please can someone advise me, I try the script written above, but my display shows nothing.

You copied and paste some unexpected values.

Can you try this

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-- Send temperature of a sensor to ESP Easy

return
{
    on =
    {
        devices   =
        {
            'Outdoor_thermometer',
        }
    }, 

    logging =
    {
        level = domoticz.LOG_DEBUG,
        marker = 'Temperature to ESPEasy'
    },

    execute = function(dz, item)

        local ESPEasyURL = 'http://192.168.7.71/control?cmd='
        dz.openURL(
            {
                url = ESPEasyURL .. '7dt,' .. item.temperature,
                method = 'GET',
            })
    end
}

[MarloCZ]

Thank you very much for the modified script.
I turned it on, but the screen still doesn't show me anything

The extract from the log is as follows:

2020-02-19 13:06:25.489 Status: dzVents: Info: Handling events for: "Outdoor_thermometer", value: "5.06"
2020-02-19 13:06:25.490 Status: dzVents: Info: Temperature to ESPEasy: ------ Start internal script: Display-1: Device: "Outdoor_thermometer (Dummy)", Index: 48
2020-02-19 13:06:25.490 Status: dzVents: Debug: Temperature to ESPEasy: OpenURL: url = http://192.168.7.71/control?cmd=7dt5.0599999427795
2020-02-19 13:06:25.490 Status: dzVents: Debug: Temperature to ESPEasy: OpenURL: method = GET
2020-02-19 13:06:25.490 Status: dzVents: Debug: Temperature to ESPEasy: OpenURL: post data = nil
2020-02-19 13:06:25.490 Status: dzVents: Debug: Temperature to ESPEasy: OpenURL: headers = nil
2020-02-19 13:06:25.490 Status: dzVents: Debug: Temperature to ESPEasy: OpenURL: callback = nil
2020-02-19 13:06:25.491 Status: dzVents: Info: Temperature to ESPEasy: ------ Finished Display-1

[MarloCZ]

So I figured it out - it works
There was no comma in 7dt,

Code: Select all

url = ESPEasyURL .. '7dt,' .. item.temperature,

Can I have another request, could it be done on the display alternate between two different temperatures - from outside and from inside thermometer - alternately ?

Thank you in advance for your help.

[waaren]

Can I have another request, could it be done on the display alternate between two different temperatures - from outside and from inside thermometer - alternately ?

Could be something like

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-- Send temperature of two sensors alternately to ESP Easy

return
{
    on =
    {
        timer =
        {
            'every minute',
        }
    }, 

    logging =
    {
        level = domoticz.LOG_DEBUG,
        marker = 'Temperature to ESPEasy'
    },

    execute = function(dz, item)
        local display 

        if dz.time.minutes % 2 == 0 then 
            display = dz.utils.round(dz.devices('Outdoor_thermometer').temperature,1)
        else
            display = dz.utils.round(dz.devices('Indoor_thermometer').temperature,1)
        end
       
        local ESPEasyURL = 'http://192.168.7.71/control?cmd='
        dz.openURL(
            {
                url = ESPEasyURL .. '7dt,' .. display
                method = 'GET',
            })
    end
}

[MarloCZ]

Thanks for the new script, but it reports me an error

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2020-02-19 21:36:57.915 Status: dzVents: Error (2.4.19): error loading module 'Display-2' from file 'C:\Program Files (x86)\Domoticz\scripts\dzVents\generated_scripts/Display-2.lua':
2020-02-19 21:36:57.915 ...Domoticz\scripts\dzVents\generated_scripts/Display-2.lua:32: '}' expected (to close '{' at line 30) near 'method'

[waaren]

Thanks for the new script, but it reports me an error

Sorry for that. I missed a comma after display.

can you try again ?

Code: Select all

-- Send temperature of two sensors alternately to ESP Easy

return
{
    on =
    {
        timer =
        {
            'every minute',
        }
    }, 

    logging =
    {
        level = domoticz.LOG_DEBUG,
        marker = 'Temperature to ESPEasy'
    },

    execute = function(dz, item)
        local display 

        if dz.time.minutes % 2 == 0 then 
            display = dz.utils.round(dz.devices('Outdoor_thermometer').temperature,1)
        else
            display = dz.utils.round(dz.devices('Indoor_thermometer').temperature,1)
        end
       
        local ESPEasyURL = 'http://192.168.7.71/control?cmd='
        dz.openURL(
            {
                url = ESPEasyURL .. '7dt,' .. display,
                method = 'GET',
            })
    end
}

[MarloCZ]

Thank you, it works very well.

I have one more request, is somehow done to change temperatures not after one minute, but after 5 (10) seconds
Thank you

[waaren]

is somehow done to change temperatures not after one minute, but after 5 (10) seconds
Thank you

That's possible with the attached script. Please note that the temperature shown can be 50 seconds behind measured temperature. It is possible to have a real-time temperature with a different approach but that would require dzVents >= 3.0.0

Code: Select all

-- Send temperature of two sensors alternately to ESP Easy every 10 seconds

local scriptVar = 'Temperature to ESPEasy'
return
{
    on =
    {
        timer =
        {
            'every minute',
        },
    }, 
    
    logging =
    {
        level = domoticz.LOG_DEBUG,
        marker = scriptVar,
    },

    execute = function(dz, item)
        local display = {}
            display[0] = dz.utils.round(dz.devices('Outdoor_thermometer').temperature,1)
            display[1] = dz.utils.round(dz.devices('Indoor_thermometer').temperature,1)

        local function sendTemp(selector)
            temperature = display[selector % 2]
            
            local ESPEasyURL = 'http://192.168.7.71/control?cmd='
                dz.openURL(
                {
                    url = ESPEasyURL .. '7dt,' .. temperature,
                    method = 'GET',
                }).afterSec(selector * 10)
        end

        -- main
        for i = 0, 5 do
            sendTemp(i)
        end
    end
}

[MarloCZ]

Thank you very much, it works great.

[waaren]

Thank you very much, it works great.

Show us a picture please ?

[MarloCZ]

Picture of what? A picture of the display?
I am currently testing two adults, 7 numbers and 4 numbers.
https://uloz.to/file/Up42O3LzfwyK/2020- ... -40-50-jpg