RGBWEmulated.ino

 
#include <FastLED.h>
 
// How many leds in your strip?
#define NUM_LEDS 10
 
// For led chips like WS2812, which have a data line, ground, and power, you just
// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806 define both DATA_PIN and CLOCK_PIN
// Clock pin only needed for SPI based chipsets when not using hardware SPI
#define DATA_PIN 3
 
// Define the array of leds
CRGB leds[NUM_LEDS];
 
// Time scaling factors for each component
#define TIME_FACTOR_HUE 60
#define TIME_FACTOR_SAT 100
#define TIME_FACTOR_VAL 100
 
Rgbw rgbw = Rgbw(
    kRGBWDefaultColorTemp,
    kRGBWExactColors,      // Mode
    W3                     // W-placement
);
 
typedef WS2812<DATA_PIN, RGB> ControllerT;  // RGB mode must be RGB, no re-ordering allowed.
static RGBWEmulatedController<ControllerT, GRB> rgbwEmu(rgbw);  // ordering goes here.
 
void setup() {
    Serial.begin(115200);
    //FastLED.addLeds<WS2812, DATA_PIN, GRB>(leds, NUM_LEDS).setRgbw(RgbwDefault());
    FastLED.addLeds(&rgbwEmu, leds, NUM_LEDS);
    FastLED.setBrightness(128);  // Set global brightness to 50%
    delay(2000);  // If something ever goes wrong this delay will allow upload.
}
 
void fillAndShow(CRGB color) {
    for (int i = 0; i < NUM_LEDS; ++i) {
        leds[i] = color;
    }
    FastLED.show();
}
 
// Cycle r,g,b,w. Red will blink once, green twice, ... white 4 times.
void loop() {
    static size_t frame_count = 0;
    int frame_cycle = frame_count % 4;
    frame_count++;
 
    CRGB pixel;
    switch (frame_cycle) {
        case 0:
            pixel = CRGB::Red;
            break;
        case 1:
            pixel = CRGB::Green;
            break;
        case 2:
            pixel = CRGB::Blue;
            break;
        case 3:
            pixel = CRGB::White;
            break;
    }
 
    for (int i = -1; i < frame_cycle; ++i) {
        fillAndShow(pixel);
        delay(200);
        fillAndShow(CRGB::Black);
        delay(200);
    }
    delay(1000);
}