volatile bool alarme = false;
volatile bool soneca = false;
volatile bool toggle = false;
volatile uint16_t count = 0;

void Toggle() {
  toggle = true;
}

void Soneca() {
  if(alarme){
    alarme = false;
    soneca = true;

    count = 0;
    TCNT1 = 0;
    Serial.println("Soneca begin");
  }
}

ISR(TIMER1_COMPA_vect) {
    count++;
    TCNT1 = 0;
}

void setup() {
  Serial.begin(9600);
    // Set pin 13 as output
    pinMode(13, OUTPUT);
    // Set pin 2 as input
    pinMode(2, INPUT);
    // Set pin 1 as input
    pinMode(3, INPUT);

    attachInterrupt(
        digitalPinToInterrupt(2), Toggle, RISING
    );
    attachInterrupt(
        digitalPinToInterrupt(3), Soneca, RISING
    );

    cli();  
    // Enabling CTC Mode
    TCCR1A = 0b00000000;
    TCCR1B = 0b00001000;

    // enabling 1024 prescaler
    TCCR1B = 0b00000101; 
    // Clock = 15625Hz
    // 1/15625 = 0.000064

    // Setting compare value OCR1A
    // 15625*0.000064 = 1
    OCR1A = 15625;

    // Enabling OCIE1A on TIMSK1
    TIMSK1 = TIMSK1 | 0b00000010;

    sei();
}

void loop() {
  Serial.println(count);
  if (soneca){
    // soneca acabou
    if(count >= 5){
      Serial.println("Soneca end");
      alarme = true;
      soneca = false;

      count = 0;
      TCNT1 = 0;
    }
  }
  if (alarme) {
    tone(13, 262, 20);
    // desligou sozinho
    if(count >= 30){
      alarme = false;
    }
  }

  if(toggle){
    alarme = !alarme;
    toggle = false;

    count = 0;
    TCNT1 = 0;
  }
}