How to use new datatype RGB-W

[gdimaria]

Hi,

I already know how to use RGB datatype (by a little tutorial by schneider), so I can split the value to the 3 objects (Red, Green, Blue) and viceversa.

Now how I can do with RGB-white?

And I tested it on visualization but it seems to me a little confusion

[Daniel]

What is that you want to use it for? There is dedicated dpt for it and some KNX devices support it.

[admin]

Which browser are you using? The slider is not displayed correctly. Are you using zoom/scaling?

[gdimaria]

Which browser are you using? The slider is not displayed correctly. Are you using zoom/scaling?

Chrome without any scaling... same on Firefox and Edge.

I just want to let the user to click on RGB-W icon to set it. 

On the other side I would like to update the value when I set it with a script.

That's a ordinary conversion I do with a script for a RGB:

Write to RGB
----------------

Red = bit.rshift(bit.band(value, 0xFF0000), 16)
Green = bit.rshift(bit.band(value, 0xFF00), 8)
Blue = bit.band(value, 0xFF)
 
grp.write(redGroup, Red, dt.uint8)
grp.write(greenGroup, Green, dt.uint8)
grp.write(blueGroup, Blue, dt.uint8)


Read RGB
------------

red = grp.find(redGroup)
green = grp.find(greenGroup)
blue = grp.find(blueGroup)

redHex = red.datahex
greenHex = green.datahex
blueHex = blue.datahex

RGB = lmcore.hextoint(redHex..greenHex..blueHex)

grp.update(rgbGroup, RGB)



Now how  I a can do the same with a RGB-W object, which is made up of 4 scale % objects: RED - GREEN - BLU - WHITE?

Thanks.

Peppe

[Erwin van der Zwart]

Hi,

Use this for 4 byte RGBW:

Code:

value = event.getvalue()

-- Split
R = bit.rshift(bit.band(value,0xff000000),24)
G = bit.rshift(bit.band(value,0x00ff0000),16)
B = bit.rshift(bit.band(value,0x0000ff00),8)
W = bit.band(value,0x000000ff)

-- Merge
RGBW = R * 0x1000000 + G * 0x10000 + B * 0x100 + W

BR,

Erwin

[gdimaria]

Thank you so much!

BR

Peppe

[gdimaria]

Hi,

Use this for 4 byte RGBW:

Code:

value = event.getvalue()

-- Split
R = bit.rshift(bit.band(value,0xff000000),24)
G = bit.rshift(bit.band(value,0x00ff0000),16)
B = bit.rshift(bit.band(value,0x0000ff00),8)
W = bit.band(value,0x000000ff)

-- Merge
RGBW = R * 0x1000000 + G * 0x10000 + B * 0x100 + W

BR,

Erwin

I think there is a little mistake in that code because the colors shown by the icon don't match both ways: splitting and merging.

[Erwin van der Zwart]

Hi,

Just tested it and works as it should, are you using dpt 12.600?

BR,

Erwin

[gdimaria]

Hi,

Just tested it and works as it should, are you using dpt 12.600?

BR,

Erwin

yes, I do.... and I use 05.001 scale for R, G, B and W.

Maybe it depends about when both scprits are enabled, they generate a sort of loop back.

Here are my script:

EVENT SCRIPT  'mergeRGBW'


R= grp.getvalue('32/3/1')

G = grp.getvalue('32/3/2')

B= grp.getvalue('32/3/3')

W = grp.getvalue('32/3/4')


RGBW = R * 0x1000000 + G * 0x10000 + B * 0x100 + W

if RGBW ~= grp.getvalue('32/1/20') then

  grp.update('32/1/20', RGBW) --- icon address
  alert (RGBW)

end


EVENT SCRIPT 'splitRGB'


value = event.getvalue() ---- from 32/1/20  icon address

-- Split
R = bit.rshift(bit.band(value,0xff000000),24)
G = bit.rshift(bit.band(value,0x00ff0000),16)
B = bit.rshift(bit.band(value,0x0000ff00),8)
W = bit.band(value,0x000000ff)

if R ~= grp.getvalue('32/3/1') then
  grp.update('32/3/1', R)
  alert®
end

if R ~= grp.getvalue('32/3/2') then
  grp.update('32/3/2', G)
  alert(G)
end
 
if R ~= grp.getvalue('32/3/3') then
  grp.update('32/3/3', B)
  alert(B)
end

if R ~= grp.getvalue('32/3/4') then
  grp.update('32/3/4', W)
  alert(W)
end


That's all.  Still, there is a visualization issue like a reattach here

[admin]

See if this Custom CSS fixes the slider layout for you:

Code:

.slider-wrap {
  font-size: 0;
}
.slider-h .slider-min {
  margin-right: 9px;
}
.slider-h .slider-max {
  margin-left: 9px;
}

Add this to both of your scripts to prevent loops:

Code:

if event.sender == 'se' then
  return
end

You should also use grp.checkupdate() instead of grp.getvalue/grp.getvalue, you already have copy-paste errors where you compare R with all other components.

[gdimaria]

See if this Custom CSS fixes the slider layout for you:

Code:

.slider-wrap {
  font-size: 0;
}
.slider-h .slider-min {
  margin-right: 9px;
}
.slider-h .slider-max {
  margin-left: 9px;
}

Add this to both of your scripts to prevent loops:

Code:

if event.sender == 'se' then
  return
end

You should also use grp.checkupdate() instead of grp.getvalue/grp.getvalue, you already have copy-paste errors where you compare R with all other components.

OK! Now everything is fine, thank you so much!    

Just to a better understanding: what is the core difference between grp.checkupdate, grp.getvalue and grp.update?

Thank you for everything
BR


PEPPE

[admin]

See Lua documentation here: https://openrb.com/docs/lua.htm#grp.checkwrite
The basic idea is to write less code by using built-in functions instead of writing more complex code, which leads to more possible errors.

[Erwin van der Zwart]

Hi,

I think your issue with the merge is in the 5.001 scale objects as they return 0-100 within the script engine instead of 0-255, when you split/merge a RGBW value you will have 0-255 format so you might want to use a calculation R = math.round((R * 2.55),0) before pushing it to the merge calculation (and do the same with other 3 colors)

BR,

Erwin

[Daniel]

When merging it is better to use hex values as then it is dpt independent(still  1 byte). Updated the old RGB script, not tested

Code:

------------------- Configurable parameters ------------------------------------

redGroup   = '1/1/1' --- modify ether group address or name of group
greenGroup = 'LED1 Green Status' --- modify ether group address or name of group
blueGroup  = '1/1/3' --- modify ether group address or name of group
whiteGroup = '1/1/4'

rgbwGroup   = 'RGB Value' --- modify ether group address or name of group

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


red   = grp.find(redGroup)
green = grp.find(greenGroup)
blue  = grp.find(blueGroup)
white = grp.find(whiteGroup)

RGBW = lmcore.hextoint(red.datahex..green.datahex..blue.datahex..white.datahex)

grp.write(rgbwGroup, RGBW)

[gdimaria]

Hi,

I think your issue with the merge is in the 5.001 scale objects as they return 0-100 within the script engine instead of 0-255, when you split/merge a RGBW value you will have 0-255 format so you might want to use a calculation R = math.round((R * 2.55),0) before pushing it to the merge calculation (and do the same with other 3 colors)

BR,

Erwin

yes, I noticed it and fixed, thanks.

Here another issue with visualization (see attached pic): what are the black spot on preset? How to avoid that?

[admin]

Black spot is W value of RGBW

[Daniel]

This is the white status. Change the white value and it will have different colour

[gdimaria]

This is the white status. Change the white value and it will have different colour

  Ok sorry to not understood!

[gdimaria]

Sorry, my script was working on the LM (firmware 20200720) in our office. 

Today I restored it on a new LM (firmware 20200727) at customers' and it doesn't work and give me the attached warning.

We are blocked now.

Can you please help me?

Thanks

Peppe

[Daniel]

Paste the script as a code not image