main.cpp

#include <Arduino.h>

#include <FastLED.h>
#include "I2S.h"

#define BRIGHTNESS  204
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB

#define ESP32DEVKITV1

#ifdef ESP32_THING
#define LED_PIN_1  13
#define LED_PIN_2  14
#define LED_PIN_3  15
#define LED_PIN_4  16
#define LED_PIN_5  17
#define LED_PIN_6  18
#define LED_PIN_7  22
#define LED_PIN_8  25
#endif

#ifdef ESP32DEVKITV1
#define LED_PIN_1  13
#define LED_PIN_2  14
#define LED_PIN_3  15
#define LED_PIN_4  16
#define LED_PIN_5  17
#define LED_PIN_6  18
#define LED_PIN_7  19
#define LED_PIN_8  21
#define LED_PIN_9  22
#define LED_PIN_10  23
#define LED_PIN_11  25
#define LED_PIN_12  26
#define LED_PIN_13  27
#endif

#ifdef ESP32DEVKITV1
#define NUM_STRIPS 11
#define NUM_LEDS_PER_STRIP 30
#endif

#ifdef ESP32_THING
#define NUM_STRIPS 11
#define NUM_LEDS_PER_STRIP 64
#endif

#define NUM_LEDS NUM_LEDS_PER_STRIP * NUM_STRIPS

CRGB leds[NUM_STRIPS * NUM_LEDS_PER_STRIP];

extern const uint8_t gamma8[];

// Gradient palette "aspect_gp", originally from
// http://soliton.vm.bytemark.co.uk/pub/cpt-city/grass/tn/aspect.png.index.html
// converted for FastLED with gammas (2.6, 2.2, 2.5)
// Size: 12 bytes of program space.
DEFINE_GRADIENT_PALETTE( aspect_gp ) {
    0,   0,  0,  0,
  127, 255,  0,  0,
  255,   0,  0,  0};


CRGBPalette16 currentPalette;
TBlendType    currentBlending;


void FillLEDsFromPaletteColors( uint8_t colorIndex);

void setup() {
    delay( 3000 ); // power-up safety delay
    FastLED.addLeds<LED_TYPE, LED_PIN_1, COLOR_ORDER>(leds, 0 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_2, COLOR_ORDER>(leds, 1 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_3, COLOR_ORDER>(leds, 2 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_4, COLOR_ORDER>(leds, 3 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_5, COLOR_ORDER>(leds, 4 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_6, COLOR_ORDER>(leds, 5 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_7, COLOR_ORDER>(leds, 6 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_8, COLOR_ORDER>(leds, 7 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
#ifdef ESP32DEVKITV1
    FastLED.addLeds<LED_TYPE, LED_PIN_9, COLOR_ORDER>(leds, 8 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_10, COLOR_ORDER>(leds, 9 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_11, COLOR_ORDER>(leds, 10 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_12, COLOR_ORDER>(leds, 11 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.addLeds<LED_TYPE, LED_PIN_13, COLOR_ORDER>(leds, 12 * NUM_LEDS_PER_STRIP, NUM_LEDS).setCorrection( TypicalLEDStrip );
#endif
    FastLED.setBrightness(  BRIGHTNESS );
    
    currentPalette = aspect_gp;
    currentBlending = LINEARBLEND;
}


void loop()
{
    FillLEDsFromPaletteColors( beat8(15));
    
    FastLED.show();
    FastLED.delay(5);
}

void FillLEDsFromPaletteColors( uint8_t colorIndex)
{
    uint8_t brightness = 255;
    
    for( int i = 0; i < NUM_LEDS; ++i) {
        leds[i] = ColorFromPalette( currentPalette, colorIndex, brightness, currentBlending);
        leds[i].red = pgm_read_byte(&gamma8[leds[i].red]);
        colorIndex += 3;
    }
}



const uint8_t PROGMEM gamma8[] = {
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,
    2,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  5,  5,  5,
    5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  9,  9,  9, 10,
   10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
   17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
   25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
   37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50,
   51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68,
   69, 70, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
   90, 92, 93, 95, 96, 98, 99,101,102,104,105,107,109,110,112,114,
  115,117,119,120,122,124,126,127,129,131,133,135,137,138,140,142,
  144,146,148,150,152,154,156,158,160,162,164,167,169,171,173,175,
  177,180,182,184,186,189,191,193,196,198,200,203,205,208,210,213,
  215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255 };