NightlyNexus

Most recent activity

• Flashing lights Try 4 not working

  @NightlyNexus started

  • 2 comments
  • 2,339 views

  @Gordon replied
• Flashing lights Try 4 not working

  in JavaScript • 10 years, 10 months

  

  I am following the example in Try 4. I entered

  Pin.prototype.startFlashing = function(period) {
  if (Pin.intervals===undefined) Pin.intervals = [];
  if (Pin.intervals[this]) clearInterval(Pin.intervals[this]);
    var on = false;
    var pin = this;
    Pin.intervals[this] = setInterval(function() {
    on = !on;
    digitalWrite(pin, on);
  }, period);
  };
  

  But, when I run "LED1.startFlashing(1000);" in the terminal, I get "ERROR: Invalid pin!"
  "console.log(pin);" prints "=undefined" so something is very wrong.
  However, when I run "var light = LED1;" and then "light.startFlashing(1000);" I get the expected behavior.
  What is going on here? I am a Java developer and don't use JS that much, so I may be misunderstanding something simple.