How do I get the RGB values of a bulb?

[disorganise 0]

I've googled and googled and can't seem to find the answer.

 

I'm wanting the 'opposite' of this command

fibaro:call(69, "setColor", "0","0","0","255");

 

so instead of setting the values, I first want to read them.

 

I'm trying to create a scene that would transition from an existing colour to a new colour.  To do that, I need to know what the current colour *is* so I can then change the values over time to the target values.  Hope that makes sense.

 

i have the Aeotec RGB bulb in case that makes a difference.

 

Edited August 19, 2018 by disorganise

[cag014 731]

Makes sense absolutely...

To read the color value use:

colorValue = fibaro:getValue(devID, "color")

The response  is string value and has four numbers (RGBW) and it looks like:

"10,15,230,0"

You can extract the value as numbers, but since when you set the color you need to send string, so it  better to compare string to string.

For example:

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Hope it helps

Edited August 18, 2018 by cag014

[disorganise 0]

awesome, that helps a LOT.  Thanks

umm....

If I want to do maths on the values (calculate difference between targeted red value and current red value for example), I need to extract the four values as separate numbers (or strings I can 'tonumber' anyway).  Is there a simple way to do that?

 

 

Big picture...

I'm reading one of the tutorials from autofrank to figure out the LUA overall.   My goal is to have:

Each button on a touch panel set a target RGB by writing out to global variables.

A scene that triggers whenever the global target variables are changed.  This scene reads the existing bulb colour, calculates the difference between it and the target values gleaned from the global variables, and then adjusts the RGB values over an adjustable amount of time towards the target - so white slowly becomes purple for example.

 

I assume I can then have timed events to also trigger updating the target values, and the same scene will pick up and react to the change.

[cag014 731]

The simple way to extract the numbers from string:

Note ; colorValue is variable that has been received from colorValue = fibaro:getValue(devID, "color")

          R,G,B,W = colorValue:match("(%d+),(%d+),(%d+),(%d+)")

Your "Big Picture" concept sounds OK and should work

Note:

colorValue is variable that has been received from colorValue = fibaro:getValue(devID, "color")

Edited August 18, 2018 by cag014