Back to project page BluetoothLeToAndroid.
The source code is released under:
MIT License
If you think the Android project BluetoothLeToAndroid listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
/* * Copyright (C) 2013 Lann Martin//from w ww . jav a2 s. c om * * Licensed under the Apache License, Version 2.0 as below * * This file incorporates work covered by the following notice: * * Copyright (C) 2013 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ package com.example.arduino; import android.Manifest; import android.app.Service; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothGatt; import android.bluetooth.BluetoothGattCallback; import android.bluetooth.BluetoothGattCharacteristic; import android.bluetooth.BluetoothGattDescriptor; import android.bluetooth.BluetoothGattService; import android.bluetooth.BluetoothManager; import android.bluetooth.BluetoothProfile; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Binder; import android.os.IBinder; import android.util.Log; import java.util.UUID; /* * Adapted from: * http://developer.android.com/samples/BluetoothLeGatt/src/com.example.android.bluetoothlegatt/BluetoothLeService.html */ public class RFduinoService extends Service { private final static String TAG = RFduinoService.class.getSimpleName(); private BluetoothManager mBluetoothManager; private BluetoothAdapter mBluetoothAdapter; private String mBluetoothDeviceAddress; private BluetoothGatt mBluetoothGatt; private BluetoothGattService mBluetoothGattService; public final static String ACTION_CONNECTED = "com.rfduino.ACTION_CONNECTED"; public final static String ACTION_DISCONNECTED = "com.rfduino.ACTION_DISCONNECTED"; public final static String ACTION_DATA_AVAILABLE = "com.rfduino.ACTION_DATA_AVAILABLE"; public final static String EXTRA_DATA = "com.rfduino.EXTRA_DATA"; public final static UUID UUID_SERVICE = BluetoothHelper.sixteenBitUuid(0x2220); public final static UUID UUID_RECEIVE = BluetoothHelper.sixteenBitUuid(0x2221); public final static UUID UUID_SEND = BluetoothHelper.sixteenBitUuid(0x2222); public final static UUID UUID_DISCONNECT = BluetoothHelper.sixteenBitUuid(0x2223); public final static UUID UUID_CLIENT_CONFIGURATION = BluetoothHelper.sixteenBitUuid(0x2902); // Implements callback methods for GATT events that the app cares about. For example, // connection change and services discovered. private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() { @Override public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) { if (newState == BluetoothProfile.STATE_CONNECTED) { Log.d(TAG, "Connected to RFduino."); Log.d(TAG, "Attempting to start service discovery:" + mBluetoothGatt.discoverServices()); } else if (newState == BluetoothProfile.STATE_DISCONNECTED) { Log.d(TAG, "Disconnected from RFduino."); broadcastUpdate(ACTION_DISCONNECTED); } } @Override public void onServicesDiscovered(BluetoothGatt gatt, int status) { if (status == BluetoothGatt.GATT_SUCCESS) { mBluetoothGattService = gatt.getService(UUID_SERVICE); if (mBluetoothGattService == null) { Log.d(TAG, "RFduino GATT service not found!"); return; } Log.d(TAG, "RFduino GATT service found!"); BluetoothGattCharacteristic receiveCharacteristic = mBluetoothGattService.getCharacteristic(UUID_RECEIVE); if (receiveCharacteristic != null) { BluetoothGattDescriptor receiveConfigDescriptor = receiveCharacteristic.getDescriptor(UUID_CLIENT_CONFIGURATION); if (receiveConfigDescriptor != null) { gatt.setCharacteristicNotification(receiveCharacteristic, true); receiveConfigDescriptor.setValue( BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE); gatt.writeDescriptor(receiveConfigDescriptor); } else { Log.e(TAG, "RFduino receive config descriptor not found!"); } } else { Log.e(TAG, "RFduino receive characteristic not found!"); } broadcastUpdate(ACTION_CONNECTED); } else { Log.w(TAG, "onServicesDiscovered received: " + status); } } @Override public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) { if (status == BluetoothGatt.GATT_SUCCESS) { broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic); } } @Override public void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) { broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic); } }; private void broadcastUpdate(final String action) { final Intent intent = new Intent(action); sendBroadcast(intent, Manifest.permission.BLUETOOTH); } private void broadcastUpdate(final String action, final BluetoothGattCharacteristic characteristic) { if (UUID_RECEIVE.equals(characteristic.getUuid())) { final Intent intent = new Intent(action); intent.putExtra(EXTRA_DATA, characteristic.getValue()); sendBroadcast(intent, Manifest.permission.BLUETOOTH); } } public class LocalBinder extends Binder { RFduinoService getService() { return RFduinoService.this; } } @Override public IBinder onBind(Intent intent) { Log.d(TAG,"binded"); return mBinder; } @Override public boolean onUnbind(Intent intent) { // After using a given device, you should make sure that BluetoothGatt.close() is called // such that resources are cleaned up properly. In this particular example, close() is // invoked when the UI is disconnected from the Service. close(); return super.onUnbind(intent); } private final IBinder mBinder = new LocalBinder(); /** * Initializes a reference to the local Bluetooth adapter. * * @return Return true if the initialization is successful. */ public boolean initialize() { // For API level 18 and above, get a reference to BluetoothAdapter through // BluetoothManager. Log.d(TAG,"initialize"); if (mBluetoothManager == null) { mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE); if (mBluetoothManager == null) { Log.e(TAG, "Unable to initialize BluetoothManager."); return false; } } mBluetoothAdapter = mBluetoothManager.getAdapter(); if (mBluetoothAdapter == null) { Log.e(TAG, "Unable to obtain a BluetoothAdapter."); return false; } return true; } /** * Connects to the GATT server hosted on the Bluetooth LE device. * * @param address The device address of the destination device. * * @return Return true if the connection is initiated successfully. The connection result * is reported asynchronously through the * {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)} * callback. */ public boolean connect(final String address) { Log.d(TAG, "connecting"); if (mBluetoothAdapter == null || address == null) { Log.w(TAG, "BluetoothAdapter not initialized or unspecified address."); return false; } // Previously connected device. Try to reconnect. if (mBluetoothDeviceAddress != null && address.equals(mBluetoothDeviceAddress) && mBluetoothGatt != null) { Log.d(TAG, "Trying to use an existing mBluetoothGatt for connection."); return mBluetoothGatt.connect(); } final BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address); // We want to directly connect to the device, so we are setting the autoConnect // parameter to false. mBluetoothGatt = device.connectGatt(this, false, mGattCallback); Log.d(TAG, "Trying to create a new connection."); mBluetoothDeviceAddress = address; return true; } /** * Disconnects an existing connection or cancel a pending connection. The disconnection result * is reported asynchronously through the * {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)} * callback. */ public void disconnect() { if (mBluetoothAdapter == null || mBluetoothGatt == null) { Log.w(TAG, "BluetoothAdapter not initialized"); return; } mBluetoothGatt.disconnect(); } /** * After using a given BLE device, the app must call this method to ensure resources are * released properly. */ public void close() { if (mBluetoothGatt == null) { return; } mBluetoothGatt.close(); mBluetoothGatt = null; } public void read() { if (mBluetoothGatt == null || mBluetoothGattService == null) { Log.w(TAG, "BluetoothGatt not initialized"); return; } BluetoothGattCharacteristic characteristic = mBluetoothGattService.getCharacteristic(UUID_RECEIVE); mBluetoothGatt.readCharacteristic(characteristic); } public boolean send(byte[] data) { if (mBluetoothGatt == null || mBluetoothGattService == null) { Log.w(TAG, "BluetoothGatt not initialized"); return false; } BluetoothGattCharacteristic characteristic = mBluetoothGattService.getCharacteristic(UUID_SEND); if (characteristic == null) { Log.w(TAG, "Send characteristic not found"); return false; } characteristic.setValue(data); characteristic.setWriteType(BluetoothGattCharacteristic.WRITE_TYPE_NO_RESPONSE); return mBluetoothGatt.writeCharacteristic(characteristic); } public static IntentFilter getIntentFilter() { IntentFilter filter = new IntentFilter(); filter.addAction(ACTION_CONNECTED); filter.addAction(ACTION_DISCONNECTED); filter.addAction(ACTION_DATA_AVAILABLE); return filter; } }