FastLED-VirtLEDtst.ino

#include <FastLED.h>


#define LEDPIN D4
#define NUM_LEDS 5

CRGB leds[NUM_LEDS];
CRGB leds_virt[NUM_LEDS];

const int led_map[NUM_LEDS] = {
    2, 3, 0, 1, 4
};

uint8_t gHue;

// turn virtual LEDs into real LEDs
void led_swizzle() {
    for( int i=0; i<NUM_LEDS; i++) {
        leds[i] = leds_virt[led_map[i]];
    }
}

void setup() {
    FastLED.addLeds<WS2812, LEDPIN, GRB>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
}

void loop() {
    fill_rainbow( leds_virt, NUM_LEDS, gHue++, 10);
    led_swizzle();
    FastLED.show();
    delay(100);
}