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bluetooth.rst

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Bluetooth

Any -> Glass

If you are running a WearScript on a device that is paired to Glass, you are able to send gestures to Glass just like the MyGlass app. If you want to setup the socket before you actually send a command, use INIT.

WS.control("TAP");
WS.control("SWIPE_LEFT");
WS.control("SWIPE_RIGHT");
WS.control("SWIPE_DOWN");
WS.control("INIT");

Keyboard -> Glass

By connecting a BT keyboard to Glass you can control the timeline and use the keypresses inside WearScript like you would in a normal webpage. Keyboards like this http://www.amazon.com/dp/B005C6CVAE/ work well with Glass. First we have to install the Settings.apk so that we can access the pairing options. Install the Settings.apk from here http://www.glassxe.com/2013/05/23/settings-apk-and-launcher2-apk-from-the-hacking-glass-session-at-google-io/ and start the settings using

adb shell am start -a android.intent.action.MAIN -n com.android.settings/.Settings

You may want to remove the settings apk after you are done as it cause annoying crashes on startup

adb uninstall com.android.settings

Put your device into a bluetooth pairing mode. Select Bluetooth, then use the touchpad to select your device. You'll be asked to type a code using the keyboard and then you are all done.

Arduino <-> Glass

Bluetooth module: http://www.amazon.com/dp/B0093XAV4U

Arduino code. Make sure to plug the RX from BT into TX of arduino which is pin 2 below.

#include <SoftwareSerial.h>
SoftwareSerial mySerial(3, 2); // RX, TX
void setup() {
  Serial.begin(57600);
  while (!Serial) {
  }
  mySerial.begin(9600);
}

void loop() {
  if (mySerial.available())
      Serial.write(mySerial.read());
  if (Serial.available()) {
      delay(10); // HACK
      mySerial.write(Serial.read());
  }
}
<html style="width:100%; height:100%; overflow:hidden">
<body style="width:100%; height:100%; overflow:hidden; margin:0">
<script>
function main() {
      if (WS.scriptVersion(1)) return;
      WS.serverConnect('{{WSUrl}}', function () {
          WS.bluetoothWrite('20:13:12:05:04:11', 'bluetooth message from glass to arduino');
          WS.bluetoothRead('20:13:12:05:04:11', function (c) {
                WS.log('BT:' + c)
          });
          WS.bluetoothList(function (devices) {
            WS.log(JSON.stringify(devices));
          });
            });
}
window.onload = main;
</script>
</body>
</html>