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RGB LED Control

3-channel RGB LED control with software PWM.

Features:

Control 3 LEDs as RGB unit
Software PWM with gamma correction
Integration with Color module
Per-channel or combined control

Usage:

import nimphea/hid/rgb_led
import nimphea_color

var rgb: RgbLed
rgb.init(D10, D11, D12, false)  # R, G, B pins, not inverted

# Set by channels
rgb.set(1.0, 0.0, 0.0)  # Red

# Set by color object
var purple = createColor(0.5, 0.0, 0.5)
rgb.setColor(purple)

# In main loop at 1kHz
while true:
  rgb.update()
  hw.delayMs(1)

Imports

nimphea

Types

RgbLed {.importcpp: "daisy::RgbLed", header: "hid/rgb_led.h".} = object: RGB LED (3x LED configured as RGB unit) Source Edit

Procs

proc init(this: var RgbLed; red, green, blue: Pin; invert: bool) {. importcpp: "#.Init(#, #, #, #)", ...raises: [], tags: [], forbids: [].}: Initialize RGB LED with 3 pins

Parameters:

red - Pin for red channel

green - Pin for green channel

blue - Pin for blue channel

invert - True to invert all channels (for common anode LEDs)

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proc set(this: var RgbLed; r, g, b: cfloat) {.importcpp: "#.Set(#, #, #)", ...raises: [], tags: [], forbids: [].}: Set RGB LED color by channels

Parameters:

r - Red brightness (0.0 to 1.0)

g - Green brightness (0.0 to 1.0)

b - Blue brightness (0.0 to 1.0)

Example:

rgb.set(1.0, 0.0, 0.0) # Red rgb.set(0.0, 1.0, 0.0) # Green rgb.set(1.0, 1.0, 0.0) # Yellow
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proc setBlue(this: var RgbLed; val: cfloat) {.importcpp: "#.SetBlue(#)", ...raises: [], tags: [], forbids: [].}: Set blue channel only Source Edit
proc setColor(this: var RgbLed; c: Color) {.importcpp: "#.SetColor(#)", ...raises: [], tags: [], forbids: [].}: Set RGB LED using a Color object

Parameters:

c - Color object

Example:

import nimphea_color var purple = createColor(0.5, 0.0, 0.5) rgb.setColor(purple) # Or with preset var red = createColor() red.init(COLOR_RED) rgb.setColor(red)
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proc setGreen(this: var RgbLed; val: cfloat) {.importcpp: "#.SetGreen(#)", ...raises: [], tags: [], forbids: [].}: Set green channel only Source Edit
proc setRed(this: var RgbLed; val: cfloat) {.importcpp: "#.SetRed(#)", ...raises: [], tags: [], forbids: [].}: Set red channel only Source Edit
proc update(this: var RgbLed) {.importcpp: "#.Update()", ...raises: [], tags: [], forbids: [].}: Update all 3 LED PWM states

Must be called at regular interval (typically 1kHz)!
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