Notti Android library

Notti library is an embedded Android service for controlling Notti Bluetooth devices

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Notti is a small bluetooth led light with built in battery made by Witti

This project is composed of two modules :

• Android Service, exposing APIs to scan,connect and control a Notti device
• Android Application which control Notti through service APIs

Notti Service

Android service that manage your Notti bluetooth device(s) through BLE GATT interfaces :

• set ON/OFF
• set RGB color
• set color intensity

Characteristics on Notti cant be read on current device firmware. Previous state should be memorized to maintain statefull processing

Include into your project

Grab from Bintray maven repository :

compile 'fr.bmartel:notti-service:0.21'

Bind and/or Start Notti service

Bind your activity/service to NottiBtService :

Intent intent = new Intent(context, NottiBtService.class);

startService(intent);

bound = bindService(intent, mServiceConnection, BIND_AUTO_CREATE);

if (bound){
	// you are bound to Notti service
}
else {
	// binding failure
}

And for your service connection :

private ServiceConnection mServiceConnection = new ServiceConnection() {

	@Override
	public void onServiceConnected(ComponentName name, IBinder service) {

		Log.i(TAG, "Connected to service");

		NottiBtService nottiService = ((NottiBtService.LocalBinder) service).getService();
	}

	@Override
	public void onServiceDisconnected(ComponentName name) {

		Log.i(TAG, "Disconnected from service");
	}

};

API Description

Notti service exposes a set of API, an application can uses in its own process

Start a scan

Start a scan which will go on until a stopScan() is called :

boolean status = service.startScan();

if (status){
	// scan start request success
}
else {
	//scan start failure
}

Stop a scan

service.stopScan();

Get scanning list

This is a map of devices scanned until now. Only Notti devices will appear :

• key : Bluetooth address
• value : BluetoothDevice object

Map<String, BluetoothDevice> scanList = service.getScanningList();

Get scaning status

boolean scanStatus = service.isScanning();

if (scanStatus){
	// currently scanning
}
else {
	// not scanning
}

Clear scannning list

Empty the scanning list :

service.clearScanningList();

Connect to device

Connect a device with its device address :

service.connect("5C:31:3E:7F:81:1B");

You can get device address from scanning list key item

Get list of devices

List of devices that have already been connected at least once since service start :

• key : Bluetooth address
• value : IBluetoothDeviceConn object featuring a Bluetooth connection object

HashMap<String, IBluetoothDeviceConn> connectionList = service.getConnectionList();

IBluetoothDeviceConn can be cast into INottiDevice to be able to control your Notti device :

if (service.getConnectionList().get("5C:31:3E:7F:81:1B").getDevice() instanceof INottiDevice) {

	INottiDevice device = (INottiDevice) service.getConnectionList().get("5C:31:3E:7F:81:1B").getDevice();

}

Disconnect from device

boolean status = service.disconnect("5C:31:3E:7F:81:1B");

if (status){
	// disconnection request complete
}
else {
	// disconnection failure
}

Disconnect all devices

service.disconnectall();

Events

You can receive events related to following actions :

• scan has started
• scan has ended
• a new device has been discovered
• a device has connected
• a device has disconnected

To receive those one of these events or all of them, you have to register a BroadcastReceiver object with following filters :

Intent	descriptions
BluetoothEvents.BT_EVENT_SCAN_START	scan has started
BluetoothEvents.BT_EVENT_SCAN_END	scan has ended
BluetoothEvents.BT_EVENT_DEVICE_DISCOVERED	a new device has been discovered and added to scanning list
BluetoothEvents.BT_EVENT_DEVICE_CONNECTED	a device has connected
BluetoothEvents.BT_EVENT_DEVICE_DISCONNECTED	a device has disconnected

For receiving all events :

IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothEvents.BT_EVENT_SCAN_START);
intentFilter.addAction(BluetoothEvents.BT_EVENT_SCAN_END);
intentFilter.addAction(BluetoothEvents.BT_EVENT_DEVICE_DISCOVERED);
intentFilter.addAction(BluetoothEvents.BT_EVENT_DEVICE_CONNECTED);
intentFilter.addAction(BluetoothEvents.BT_EVENT_DEVICE_DISCONNECTED);

Register your BroadCastReceiver :

registerReceiver(mGattUpdateReceiver, intentFilter);

And your mGattUpdateReceiver looks like :

private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() {

	@Override
	public void onReceive(Context context, Intent intent) {

		String action = intent.getAction();

		if (BluetoothEvents.BT_EVENT_SCAN_START.equals(action)) {

			Log.i("notti-app", "Scan has started");

		} else if (BluetoothEvents.BT_EVENT_SCAN_END.equals(action)) {

			Log.i("notti-app", "Scan has ended");

		} else if (BluetoothEvents.BT_EVENT_DEVICE_DISCOVERED.equals(action)) {

			BluetoothObject btDevice = BluetoothObject.parseArrayList(intent);

			if (btDevice != null) {
				Log.i("notti-app", "New device has been discovered : " + 
					btDevice.getDeviceName() + " - " + btDevice.getDeviceAddress());
			}

		} else if (BluetoothEvents.BT_EVENT_DEVICE_CONNECTED.equals(action)) {

			BluetoothObject btDevice = BluetoothObject.parseArrayList(intent);

			if (btDevice != null) {
				Log.i("notti-app", "Device connected : " + 
					btDevice.getDeviceName() + " - " + btDevice.getDeviceAddress());
			}

		} else if (BluetoothEvents.BT_EVENT_DEVICE_DISCONNECTED.equals(action)) {

			BluetoothObject btDevice = BluetoothObject.parseArrayList(intent);

			if (btDevice != null) {
				Log.i("notti-app", "Device disconnected : " + 
					btDevice.getDeviceName() + " - " + btDevice.getDeviceAddress());
			}

		} 
	}
};

You can parse device name and device address with BluetoothObject class as featured above.

Notti application

This Android application bounds to Notti service to control your device(s)

You can do the following :

• scan network looking for your Notti devices
• connect to your devices,
• control all Notti device functions

Requirements

This project require Android SDK lvl17+

External Lib

• Color picker by Lars Werkman : https://github.com/LarsWerkman/HoloColorPicker

Screenshots