Toggle Example

This example demonstrates how to write to a device using Seriality to control an LED via radio buttons. This example is also available in the Seriality installation package and online.

HTML/JS/Seriality

<html>
<head>

  <script type="text/javascript">
  
    // make global reference
    var serial;
  
    function setup()
    {
      // instantiate seriality
      serial = (document.getElementById("seriality")).Seriality();

      // begin serial communications on first known port at 9600 baud
      serial.begin(serial.ports[0], 9600);

      // write a '-' to set the initial state of the LED to off
      serial.write('-');

      // note the use of 'onload' and 'onclick' below...
    }
 
  </script>

</head>
<body onload="setup()">

  <object type="application/Seriality" id="seriality" width="0" height="0"> </object>

  <form>
    ON <input type="radio" name="led" value="on" onclick="serial.write('!');"><br/>
    OFF <input type="radio" name="led" value="off" onclick="serial.write('-');" checked="checked">
  </form>

</body>
</html>

Wiring/Arduino

void setup()
{
  Serial.begin(9600);
  pinMode(13, OUTPUT);
}

void loop()
{
  char in;
  if (Serial.available()) {
    in = Serial.read();
    if (in == '!') {
      digitalWrite(13, HIGH);
    } else {
      digitalWrite(13, LOW);
    }
  }
}

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