/** Functions ****************************/
void encender_led_con_el_pin_13() {
  // Led digital write function
  digitalWrite(13,HIGH);
}
void apagar_led_con_el_pin_13() {
  // Led digital write function
  digitalWrite(13,LOW);
}
void esperar_1_segundo() {
  delay(1000);
}

/** Setup function ***********************/
void setup() {
pinMode(13, OUTPUT);}

/** Loop function ************************/
void loop() {
  encender_led_con_el_pin_13();
  esperar_1_segundo();
  apagar_led_con_el_pin_13();
  esperar_1_segundo ();
}