/************************************************************************** 
  Timer1 004 Normal mode with 3 ISR
  empty loop

  This program was written in the simplest possible way in order to prevent 
  a not excellent knowledge of programming language.  It is possible use it
  HOW IT IS only on the wokwi simulator
    
  For no reason the use of this code make the authors responsible and 
  even less obliges them to provide support and / or any explanation or 
  clarification
  However, if possible, we will try to answer to any questions, 
  without any obligation and / or commitment and / or responsibility
  by  https://www.facebook.com/groups/883620498953478 TEAM
   

      The user of this software will have total, complete 
      and exclusive responsibility for anythings.
      Anyone can modify it and adapt it to own needs,always reporting the 
      present declaration, even after important changes.

  These phrases will always reported in complete form, without this declaration
  there will be a copyright violation                        
  
  Thank you

 **************************************************************************/
#define led1 	13 
#define led2 	12 
#define led3  11

void setup() {
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
    
  // SEGNALE START
  PORTB|=B11111000; delay(600);
  PORTB&=B11000111; delay(600);
  PORTB|=B00100000; 

  cli(); // Nointerrupt - tutti gli interrupt disabilitati

  // RESET TIMER1
  TCCR1A = 0;
  TCCR1B = 0;

  // Set soglie A e B
  OCR1A = 44000;
  OCR1B = 22000; 

  // abilita i 3 Timer1 interrupt 
  TIMSK1 |= (1 << OCIE1B);
  TIMSK1 |= (1 << OCIE1A);
  TIMSK1 |= (1 << TOIE1);

  sei();  // abilita tutti gli interrupt

  // set prescaler & start counter 
  TCCR1B |= (1 << CS12); 
}

ISR(TIMER1_COMPB_vect) {
    PORTB&=B11110111;
    PORTB|=B00010000;
    //digitalWrite(led1,HIGH); 
    //digitalWrite(led2,HIGH); 
    //digitalWrite(led3,LOW); 
}

ISR(TIMER1_COMPA_vect) {
    PORTB&=B11001111;
    PORTB|=B00001000;
    //digitalWrite(led1,LOW); 
    //digitalWrite(led2,LOW);
    //digitalWrite(led3,HIGH);   
}

ISR(TIMER1_OVF_vect) {
    PORTB&=B11100111;
    PORTB|=B00100000;
    //digitalWrite(led1,HIGH); 
    //digitalWrite(led2,LOW);
    //digitalWrite(led3,LOW);
  }

void loop() {  
// loop vuoto 
}