razvanbh.github.io/index.html at master · razvanbh/razvanbh.github.io · GitHub

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<html>
<body>
<button onclick="connect()">Connect to Web Bluetooth</button>
<script>
function connect() {
  var options =  {
    filters: [
      {namePrefix: 'Pixl.js'},
    ],
    optionalServices: [ "7b340000-105b-2b38-3a74-2932f884e90e" ]
  };
  var busy = false;
  var gatt, service;
  // Bring up the Web Bluetooth Device Chooser
  navigator.bluetooth.requestDevice(options).then(function(device) {
    console.log('Device: ' + JSON.stringify(device));
    return device.gatt.connect();
  }).then(function(g) {
   gatt = g;
   // Get our custom service
   return gatt.getPrimaryService("7b340000-105b-2b38-3a74-2932f884e90e");
  }).then(function(service) {
    // Get the RGB LED characteristic
    return service.getCharacteristic("7b340001-105b-2b38-3a74-2932f884e90e");
  }).then(function(characteristic) {
    // Make a random color
    var rgb = new Uint8Array([
	    Math.random()*255,
	    Math.random()*255,
	    Math.random()*255]);
    // Write it to the characteristic
    return characteristic.writeValue(rgb);
  }).then(function() {
    gatt.disconnect();
    console.log("All Done!");
  }).catch(function(error) {
    console.log("Something went wrong. " + error);
  });
}
</script>
</body>
</html>