#define Butt 14
#define LED 15

void IRAM_ATTR Interupsi(){
  digitalWrite(LED, !digitalRead(LED));
}

void setup() {
  pinMode(Butt, INPUT_PULLUP);
  pinMode(LED, OUTPUT);
  digitalWrite(LED, 1);
  attachInterrupt(Butt, Interupsi, FALLING);
}

void loop() {
  
}