Command 'PixelType' to change the WS2812 color order and channel number

[s-hadinger]

Description:

Command PixelType:

(ESP32 only) Set the number of channels per led in the strip, and the color order
0 = use compile-time options, like on ESP8266 (default)
1 = GRB (typical for WS2812)
2 = RGB
3 = RBG
4 = BRG
5 = BGR
6 = GBR
add 8 = 4 channels strip (RGBW), default 3 channels
add 16 = if W is sent first, default W is sent last

Examples:
1 = GRB
9 = GRBW
25 = WGRB

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.8
• The code change is tested and works with Tasmota core ESP32 V.3.1.1.250109
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass

[Noschvie]

@s-hadinger Do you have the option to test this with an SK6812? The colors don't match mine. For example, with RGBW, green and blue are swapped, and the colors don't match with any other configuration. With WLED the LED strip works. Thanks

[s-hadinger]

No I don't have any SK6812. So what is the correct pixel order?

[Noschvie]

When compiled with #define USE_WS2812_CTYPE NEO_RGBW, green and blue are swapped. With the other options, the colors are mixed and ambiguous.

[s-hadinger]

Do you have the specs of your SK2812 leds? The standard for these leds seem to be GRB, not RGB

[Noschvie]

Maybe this spec will help.