Domoticz

acaonweb wrote: Tuesday 04 June 2019 13:57 I've noticed that next to the temperature sensor panel, there is an arrow that indicate probably the temperature is rising up or down
there's a way with dzVents to get that information?

local sensors = {433, 530, 591, 842, 1639} -- lest of temperature sensors that you want to watch for trend
return
{
    on = { devices = sensors }, 
    logging = {level = domoticz.LOG_ERROR, marker = 'Temperature ' },
    data = { sensors = { initial = {}}},

    execute = function(dz,item)
        lastMeasuredTemperature = dz.data.sensors[item.id]
        newTemperature = dz.utils.round(item.temperature,2)

        local function message(trend)
            dz.log ('trend for ' .. item.name .. ' is ' .. (trend or 'stable'),dz.LOG_FORCE)
        end

        if not lastMeasuredTemperature then message()
        elseif lastMeasuredTemperature ==  newTemperature then message() 
        elseif lastMeasuredTemperature <  newTemperature then message('up') 
        else message('down') 
        end
        dz.data.sensors[item.id] = newTemperature
    end
}

acaonweb wrote: Friday 07 June 2019 9:22 i'm just worried about use persistent data for the rpi3's perfomance

acaonweb wrote: Friday 07 June 2019 9:46 Another question:
it's possible to have functions available for every scripts? A sort of "libraries of common functions"?

waaren wrote: Friday 07 June 2019 9:55

acaonweb wrote: Friday 07 June 2019 9:22 i'm just worried about use persistent data for the rpi3's perfomance

The Lua engine in domoticz is driving the IO with the persistent data and from what I see it's doing that quite efficient. I never noticed any delay in the dzVents scripts as a result of using persistent data. One thing to be be aware of is the wearing of the SD card over time.
Always ensure you have a recent clone of the card and also make frequent backups of your database and external scripts / data.
One of the reasons why I do my IO to my NAS using berryboot

waaren wrote: Friday 07 June 2019 9:57

acaonweb wrote: Friday 07 June 2019 9:46 Another question:
it's possible to have functions available for every scripts? A sort of "libraries of common functions"?

Sure. Have a look at this topic of the dzVents wiki

acaonweb wrote: Friday 07 June 2019 10:09

waaren wrote: Friday 07 June 2019 9:55

acaonweb wrote: Friday 07 June 2019 9:22 i'm just worried about use persistent data for the rpi3's perfomance

One of the reasons why I do my IO to my NAS using berryboot

im really newbie.. how do that?

acaonweb wrote: Friday 07 June 2019 10:15

waaren wrote: Friday 07 June 2019 9:57

acaonweb wrote: Friday 07 June 2019 9:46 Another question:
it's possible to have functions available for every scripts? A sort of "libraries of common functions"?

Sure. Have a look at this topic of the dzVents wiki

Do if i write a script called global_data with the internal script editor, i can put functions in the same way ad a local function calling them with .helpers?

-- global_data.lua 
 
return 
{
    
    data =
    {
        hostname                                = { initial = "notset" },
    },

    helpers =
    {

        hostname = function(dz)
            if dz.globalData.hostname ~= "notset" then return dz.globalData.hostname end
            local fileHandle     = assert(io.popen("hostname", 'r'))
            local commandOutput  = assert(fileHandle:read('*a'))
            fileHandle:close()
            dz.globalData.hostname = commandOutput
            return commandOutput
        end,
        
        myYouless = function(dz)
            return dz.devices('Youless').powerYield
        end,

    },
}

dz.log(dz.helpers.hostname(dz))