Blinking LEDs example (BeagleBone Black Wireless)

bonescript-blinking-leds.js

#!/usr/bin/env node
'use strict';

const b = require('bonescript');

console.log('VERSION', 2);
console.log(`Working directory of the Node.js process: ${process.cwd()}`);

const leds = ['USR0', 'USR1', 'USR2', 'USR3', 'P9_14'];

// Prepare LEDs
for (const led of leds) {
  b.pinMode(led, b.OUTPUT);
}

function lightOn(turnOn) {
  const state = (turnOn) ? b.HIGH : b.LOW;
  for (const led of leds) {
    b.digitalWrite(led, state);
  }
}

function toggleLEDs() {
  let turnOn = false;
  setInterval(() => {
    lightOn(turnOn);
    turnOn ^= true;
  }, 1000);
}

toggleLEDs();