Help with copy value to a local variable with a virtual button

[Rogga10000 0]

I have a meter whose value I display with a Label in a VD with following code: fibaro: call (fibaro: getSelfId (), "setProperty", "ui.Label1.value", fibaro: getValue (262, "energy") .. " kWh ");.

 

I am wondering if anyone can help me develop the LUA code with an additional Label and virtual button in VD.

 

I have the following idea for the function. When the button is pressed, in my case, "value 262" is copied to a local variable that can be called "old value". The new label shows the current value minus the "old value" i.e., my energy use since the last reset.

 

Also believe me to have read somewhere that Fibaro has a command that shows the timestamp of an event which in my case could show when "old value" was last saved

 

Does anyone have a solution to this challenge?

Edited August 4, 2019 by Rogga10000
Clarification of my question

[Rogga10000 0]

I have had some success with my project.

 

To be able to move on, I wonder if anyone can show me how I can change the value of a local variable when "Reset button" is "ON" on a virtual button in the same VD as the local variables. When pressing a virtual button in the VD I wish to save OldValue = NewValue.

 

The value I want in the end is NewValue-OldValue. After "Reset" NewValue=OldValue=0. After that the NewValue will increase with the energy consumption...

[Kage 37]

set it in a timefunction

 

local sourceTrigger = fibaro:getSourceTrigger()
local ID                = "ID number"
local B                   = fibaro:getValue(ID, "energy")
------------------------------------------------------------------
function script()
    A = fibaro:getValue(ID, "energy")
------------------------------------------------------------------
    C = (A - B)
    B = A
------------------------------------------------------------------
setTimeout(script, 60*1000)
end
------------------------------------------------------------------
if (sourceTrigger["type"] == "autostart") then script() end

 

[Rogga10000 0]

Thanks Kage for your response,

I have tried different versions of this proposal without succeeding in making it work. If you can develop your answer a little, it would be very appreciated.

 

This is the code I have in the VD that does not work

 

--[[
%% properties
262 energy
%% globals
--]]

---------------------------------------------------------------------------------------------------------

--- To see values of local varables in Label

fibaro:call(fibaro:getSelfId(), "setProperty", "ui.Label1.value", A);

fibaro:call(fibaro:getSelfId(), "setProperty", "ui.Label2.value", B);
fibaro:call(fibaro:getSelfId(), "setProperty", "ui.Label3.value", C);

---------------------------------------------------------------------------------------------------------

local sourceTrigger = fibaro:getSourceTrigger()

local ID = "262" -- Should it be the ID of the VD (325) or the energy meter (262)?
local B = fibaro:getValue(ID, "energy")
------------------------------------------------------------------
function script()
local A = fibaro:getValue(ID, "energy")
------------------------------------------------------------------
local C = (A - B)
local B = A
------------------------------------------------------------------
setTimeout(script, 60*1000);
end
------------------------------------------------------------------
if (sourceTrigger["type"] == "autostart") then script() end

----------------------------------------------------------
 

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[Kage 37]

The script was for a scene, from there you can set it in a VD like

 

add to scene

local selfId = "your ID_VD"

fibaro:call(selfId, "setProperty", "ui.lblEnergie.value", C)