#include <RotaryEncoderPCNT.h>
#include "ESP32_WS2812_Lib.h"
// Constructor args are: pinA/Clock, pinB/Data, start position, glitch filter time in ns.
// Start position and filter time are optional. Defaults are 0 and 1000ns respectively.
//
// RotaryEncoderPCNT encoder(25, 12, 0, 1000);
// RotaryEncoderPCNT encoder(25, 12, 0);
RotaryEncoderPCNT encoder(6, 7);

int old_position;
int position;





#define LEDS_COUNT  8
#define LEDS_PIN	15
#define CHANNEL		0
ESP32_WS2812 strip = ESP32_WS2812(LEDS_COUNT, LEDS_PIN, CHANNEL);

void setup() {
  Serial.begin(115200);
  strip.begin();
  // Change position after initialization.
  // encoder.setPosition(128);

  // Show initial position.
  old_position = encoder.position();
  Serial.println(old_position);
}

void loop() {
  // Show position when it changes.
  position = encoder.position();
  if(position != old_position){
    Serial.println(position);
    old_position = position;
  }
  for (int j = 0; j < 255; j += 2) {
    for (int i = 0; i < strip.getLedCount(); i++) {
      strip.setLedColorData(i, strip.Wheel((i * 256 / strip.getLedCount() + j) & 255));
    }
    strip.show();
    delay(2);
  }  
  delay(5);
}