NewLED.ino https://www.apress.com/br/book/9781430238829 page 250

NewLED.ino

#include <LED.h>


LED led(13);   // assign digital pin 13 to an LED

void setup() {
}

void loop() {
  led.on();
  delay(1000);
  led.off();
  delay(1000);
}