Added example sketch for HM-10 module

BluetoothGUI/bluetooth.js

@@ -0,0 +1,48 @@
+function connectToBle() {
+  // Connect to a device by passing the service UUID
+  blueTooth.connect(0xFFE0, gotCharacteristics);
+}
+
+
+// A function that will be called once got characteristics
+function gotCharacteristics(error, characteristics) {
+  if (error) { 
+    console.log('error: ', error);
+  }
+  console.log('characteristics: ', characteristics);
+  blueToothCharacteristic = characteristics[0];
+
+  blueTooth.startNotifications(blueToothCharacteristic, gotValue, 'string');
+  
+  
+  isConnected = blueTooth.isConnected();
+  // Add a event handler when the device is disconnected
+  blueTooth.onDisconnected(onDisconnected);
+}
+
+
+// A function that will be called once got values
+function gotValue(value) {
+  console.log('value: ', value);
+  if (value == 'Push Button') {
+    receivedValue  = "Push Button Pressed";
+  } else {
+    receivedValue  = " ";
+  }
+}
+
+
+function onDisconnected() {
+  console.log('Device got disconnected.');
+  isConnected = false;
+}
+
+
+function sendData(command) {
+  const inputValue = command;
+  if (!("TextEncoder" in window)) {
+    console.log("Sorry, this browser does not support TextEncoder...");
+  }
+  var enc = new TextEncoder(); // always utf-8
+  blueToothCharacteristic.writeValue(enc.encode(inputValue));
+}