#define ENCODER_CLK 2
#define ENCODER_DT  3
#define LED_PIN  7
#define LED_TYPE    WS2812
#define COLOR_ORDER GRB
#define NUM_LEDS    64
#define SERIAL_BAUDRATE 115200
#include <FastLED.h>

CRGB leds[NUM_LEDS];

void setup() {
  // put your setup code here, to run once:
  Serial.begin(SERIAL_BAUDRATE);
  pinMode(ENCODER_CLK, INPUT);
  pinMode(ENCODER_DT, INPUT);
  pinMode(LED_PIN, OUTPUT);
}

void fadeall() { for(int i = 0; i < NUM_LEDS; i++) { leds[i].nscale8(250); } }

int lastClk = HIGH;

void loop() {
  // put your main code here, to run repeatedly:
  
  int newClk = digitalRead(ENCODER_CLK);
  
    static uint8_t hue = 0;
    Serial.print("x1");
    // First slide the led in one direction
    for(int i = 0; i < NUM_LEDS; i++) {
        // Set the i'th led to red 
        leds[i] = CHSV(hue++, 255, 255);
        // Show the leds
        FastLED.show(); 
        // now that we've shown the leds, reset the i'th led to black
        // leds[i] = CRGB::Black;
        fadeall();
        // Wait a little bit before we loop around and do it again
        delay(10);
    }
    Serial.print("x2");
 
    // Now go in the other direction.  
    for(int i = (NUM_LEDS)-1; i >= 0; i--) {
        // Set the i'th led to red 
        leds[i] = CHSV(hue++, 255, 255);
        // Show the leds
        FastLED.show();
        // now that we've shown the leds, reset the i'th led to black
        // leds[i] = CRGB::Black;
        fadeall();
        // Wait a little bit before we loop around and do it again
        delay(10);
    }

 if (newClk != lastClk) {
    // Houve uma mudança no pino CLK
    lastClk = newClk;
    int dtValue = digitalRead(ENCODER_DT);
    if (newClk == LOW && dtValue == HIGH) {
      Serial.println("Girando no sentido horário ⏩");
    }
    if (newClk == LOW && dtValue == LOW) {
      Serial.println("Girando no sentido anti-horário ⏪");
    }
  }

}