Add native support for Gen2 ARGB

[FSys77]

Component name

Light / esp32_rmt_led_strip

Link to component documentation on our website

https://esphome.io/components/light/esp32_rmt_led_strip/

Describe the enhancement

Add native support for Gen2 ARGB. In some cases WS2812 might work (Fractal Design, Thermaltake), in other cases (Arctic) WS2812 does not work. They use SK6112 MINI.

Gen2 ARGB was introduced by companies in the gaming PC space to allow for more flexible control of RGB lighting in PC cases.

https://github.com/cpldcpu/Gen2-Addressable-RGB/blob/main/docs/Gen2_ARGB_protocol_analysis.md

Use cases

Control RGB fans with ESP32

Anything else?

No response

[ssieb]

It looks like, unless you're doing the configuration commands, that's it's just WS2812.
The "MINI" part means it's a 3535 LED instead of 5050.

[FSys77]

I couldn't get it working with the WS2812 config. Not for the Arctic fan with the SK6112. I had some success with a manual config, but still lots of flickering.

light:
  - platform: esp32_rmt_led_strip
    id: strip
    name: "LED Strip"
    pin: 15
    num_leds: 4
    rgb_order: GRB
    bit0_high: 0.32us
    bit0_low: 0.90us
    bit1_high: 0.90us
    bit1_low: 0.30us
    reset_low: 250us
    reset_high: 0us