#include <Adafruit_NeoPixel.h>

#define PIN 8
#define NUMPIXELS 16 

#define datapin 4
#define clockpin 5
#define latchpin 6

#define ec11_left 3
#define ec11_right 2
#define ec11_sw 1

int input_num = 16;

void init_165(){
  pinMode(datapin, INPUT);
  pinMode(clockpin, OUTPUT);
  pinMode(latchpin, OUTPUT);
}


void scan_165(){
  digitalWrite(latchpin, LOW);
  digitalWrite(latchpin, HIGH);

  for (int i = 0; i < input_num; i++) {
    int bit = digitalRead(datapin);
    if (bit == HIGH) {
      Serial.print("1");
    } else {
      Serial.print("0");
    }
    digitalWrite(clockpin, HIGH); // Shift out the next bit
    digitalWrite(clockpin, LOW);
  }
}

void ec11_init(){
  pinMode(ec11_left, INPUT);
  pinMode(ec11_right, INPUT);
  pinMode(ec11_sw, INPUT);
  attachInterrupt(digitalPinToInterrupt(ec11_right),ec11_ISR,FALLING);
}

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800); 
void  WS2812_init(){
  strip.begin();
  strip.show();
}

void WS2812_show(){
  for(int i=0;i<NUMPIXELS;i++){ 
  strip.setPixelColor(i, strip.Color(255, 0, 0));  
  strip.show();  
  delay(100);
  strip.setPixelColor(i, strip.Color(0, 0, 0));  
  strip.show();
  }  
}


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32-C3!");
  init_165();
  ec11_init();
  WS2812_init();
}

void loop() {
  scan_165();
  WS2812_show();
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}


void ec11_ISR(){
  int dtValue = digitalRead(ec11_left);
  if (dtValue == HIGH) {
    Serial.println("Rotated clockwise ⏩");
  }
  if (dtValue == LOW) {
    Serial.println("Rotated counterclockwise ⏪");
  }

}