#include <EButton.h>
#include <Encoder.h>
#include <ezLED.h>

static EButton button(4);
static Encoder dial(2, 3);
static ezLED led(12);

static long const code[] = {-5, 3, -1};  // Get this from EEPROM.


template <class T, size_t N> size_t arraySize(T const (&)[N]) {
  return N;
}

static void click(EButton& btn) {
  static size_t index = 0;

  if (dial.read() / 4 == code[index]) {
    index++;
    if (index == arraySize(code)) {
      led.turnON();
    }
    return;
  }
  index = 0;
}

static void turn() {
  static long oldValue = 0;

  long value = dial.read() / 4;
  if (value != oldValue) {
    Serial.println(value);
    oldValue = value;
  }
}


void setup() {
  Serial.begin(9600);

  button.attachSingleClick(click);
  led.turnOFF();
}

void loop() {
  button.tick();
  turn();
}