void setup() {
  Serial.begin(9600);
  
pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(6, OUTPUT);
pinMode(5, OUTPUT);
pinMode(2, INPUT);
pinMode(3, INPUT_PULLUP);
digitalWrite(13,HIGH);

attachInterrupt(digitalPinToInterrupt(2),pippo,CHANGE);
attachInterrupt(digitalPinToInterrupt(3),pippo,CHANGE);

}


volatile boolean stato1=LOW;
void pippo(){
  stato1 =!stato1;
  digitalWrite(13,stato1);
}

volatile boolean stato=LOW;
volatile float a=0.0;


void loop() {
digitalWrite(12, HIGH);
delay(1000);
digitalWrite(12, LOW);
delay(1000);

}