unsigned long premillis1;
unsigned long premillis2;
unsigned long currmillis;
const unsigned long intervallo1 = 1500;
const unsigned long intervallo2 = 500;
const int Vled = 11;
const int Bled = 10;
const int Gled = 9;
const int pulsante = 12;

void setup() {
  pinMode(Vled, OUTPUT);
  pinMode(Bled, OUTPUT);
  pinMode(Gled, OUTPUT);
  pinMode(pulsante, INPUT);
  premillis1 = 0;
  premillis2 = 0;
  }

void loop() {
  currmillis = millis();
  if((currmillis - premillis1) >= intervallo1){
    premillis1 = currmillis;
    processo1();
    }
  if((currmillis - premillis2) >= intervallo2){
    premillis2 = currmillis;
  processo2();
  }
  if(digitalRead(pulsante)== HIGH){
    processo3();
    } else{
      digitalWrite(Vled, LOW);
    }
}

void processo1(){                                       //accensione led
  digitalWrite(Gled, (!digitalRead(Gled)));
}

void processo2(){
  digitalWrite(Bled, (!digitalRead(Bled)));
}

void processo3(){
  digitalWrite(Vled, HIGH);
}