#define LED_PIN 26
#define BUTTON_PIN 27

hw_timer_t * timerled = NULL;

double t;
bool on;
volatile bool corta = false;
volatile bool larga = false;
volatile bool timer_onP = false;


void IRAM_ATTR ISRTimer()
{
  if(boton_off)
  {
    digitalWrite(LED_PIN, false);
    boton_off = false;
  }
  if(larga)
  {
    timer
    larga = false;
  }
}


void IRAM_ATTR ISRledConm()
{
  if(!timer_onP)
  {
   timerStart(timerled);
  }
  
  if(timer_on)
  {
    timerStop(timerled);
    timerRestart(timerled);
    timer_onP = true;

  }
}

void setup() {
  t=0.0;
  timerled = timerBegin(1000000);
  timerAttachInterrupt (timerled, &ISRTimer);
  timerAlarm(timerled, 500000, true, 0);
  timerStop(timerled);
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(BUTTON_PIN), ISRledConm, CHANGE);
}

void loop() {
  double frecuencia = 1/((millis()-t)/1e3);
  Serial.print("Frecuencia: ");
  Serial.println(frecuencia);
  if(timer_onP)
  {
    if((timerReadMillis(timerled)) < 1000)
    {
      digitalWrite(LED_PIN, !digitalRead(LED_PIN));
      boton_off = true;
    }

    if((timerReadMillis(timerled)) >= 1000)
    {
      larga = true;
    }
    timer_onP = false;
  }


  if(larga)
  {
    timerStart(timerled);
  }
  t=millis();
  delay(50); // this speeds up the simulation
}









  if(timer_on)
  {
    if(cont <10){
      digitalWrite(LED_PIN, !digitalRead(LED_PIN));
    }
    if(cont == 10)
    {
      cont = 0;
      timerStop(timerled);
      digitalWrite(LED_PIN, !digitalRead(LED_PIN));
    }
    timer_on = false;
  }