volatile byte stateRed = LOW;

volatile byte stateGreen = LOW;


void setup() {
 attachInterrupt(digitalPinToInterrupt(2), ISRblink, RISING);
 digitalWrite(12,stateRed);
 digitalWrite(3,stateGreen);
 pinMode(2, INPUT_PULLUP);
}




void loop() {
stateRed = !stateRed;
delay(5000);
digitalWrite(12,stateRed);
}

void TSRblink(){


  
   
}