#include <FastLED.h>
// #include <FastLED_NeoMatrix.h>
// #include <Adafruit_NeoPixel.h>

// #define MATRIX_WIDTH 20
// #define MATRIX_HEIGHT 20
// #define NUM_LEDS (MATRIX_WIDTH * MATRIX_HEIGHT)
#define DATA_PIN 16
#define LED_PIN 16

#define LED_COUNT 27
// CRGB leds[NUM_LEDS];
CRGB leds[LED_COUNT];


// Adafruit_NeoPixel pixels(LED_COUNT, LED_PIN, NEO_RGB + NEO_KHZ800);


int getLedIndex(int x, int y) {

}
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  // pixels.begin();
  FastLED.addLeds<WS2812, LED_PIN, RGB>(leds, LED_COUNT);
}

void loop() {
  // put your main code here, to run repeatedly:
  for (int i = 0; i < 256; i++) {
    for (int ix = 0; ix < LED_COUNT; ix++) {
      leds[ix] = CRGB(i, 0, 0);
      // pixels.setPixelColor(ix, pixels.Color(i, 0, 0));
      // pixels.show();
      // delay(10);
    }
    FastLED.show();
    delay(10);
  }
  for (int i = 0; i < 256; i++) {
    for (int ix = 0; ix < LED_COUNT; ix++) {
      leds[ix] = CRGB(0, i, 0);
      // pixels.setPixelColor(ix, pixels.Color(0, i, 0));
      // pixels.show();
      // delay(10);
    }
    FastLED.show();
    delay(10);
  }
  for (int i = 0; i < 256; i++) {
    for (int ix = 0; ix < LED_COUNT; ix++) {
      leds[ix] = CRGB(0, 0, i);
      // pixels.setPixelColor(ix, pixels.Color(0, 0, i));
      // pixels.show();
      // delay(10);
    }
    FastLED.show();
    delay(10);
  }
}