M150 Intercept

WS281x LED Status will intercept M150 commands to control the LEDs.

Commands should be formatted as such:

M150 [P{intensity}] [R{intensity}] [G{intensity}] [B{intensity}] [W{intensity}]

Parameter	Explanation
P	Brightness, max 255. If not included, defaults to maximum brightness in the settings
R	Red intensity, max 255.
G	Green intensity, max 255. Can also be U for Marlin compatibility.
B	Blue intensity, max 255.
W	White intensity, max 255.

All of the parameters are optional, and can be included in any order. If an option is not included, its value is 0 - as a result sending an empty M150 command will turn the LEDs off.

It's not recommended to send an empty M150, and instead use @ commands to turn the LEDs on and off.

Examples:

M150 R255 G255  # Sets LEDs to yellow
M150 G238 B255  # Sets to light-ish blue
M150 W100       # Sets to white, at 100 intensity
M150 R255 P200  # Sets LEDs to red, at 200 brightness

What does the W parameter do?

On a standard RGB WS281x strip, the W parameter sets an equal value of R, G and B on the LEDs.

If you have an RGBW strip and enable the 'Use dedicated white' setting, the W parameter will control the white LEDs only.

Sending any of R, G or B with the command takes priority over the W.