/*
- * Copyright (C) 2007 The Android Open Source Project
+ * Copyright © 2012 Mike Beattie <mike@ethernal.org>
*
- * 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
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
*
- * http://www.apache.org/licenses/LICENSE-2.0
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
*
- * 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.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
package org.altusmetrum.AltosDroid;
+import java.lang.ref.WeakReference;
+import java.util.ArrayList;
+import java.util.concurrent.TimeoutException;
+import java.util.Timer;
+import java.util.TimerTask;
+
import android.app.Notification;
-import android.app.NotificationManager;
+//import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothAdapter;
import android.content.Intent;
-import android.os.Binder;
+import android.content.Context;
+import android.os.Bundle;
import android.os.IBinder;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
+import android.location.Location;
+import android.location.LocationManager;
+import android.location.LocationListener;
+import android.location.Criteria;
+
+import org.altusmetrum.altoslib_5.*;
+
+
+public class TelemetryService extends Service implements LocationListener {
+
+ private static final String TAG = "TelemetryService";
+ private static final boolean D = true;
+
+ static final int MSG_REGISTER_CLIENT = 1;
+ static final int MSG_UNREGISTER_CLIENT = 2;
+ static final int MSG_CONNECT = 3;
+ static final int MSG_CONNECTED = 4;
+ static final int MSG_CONNECT_FAILED = 5;
+ static final int MSG_DISCONNECTED = 6;
+ static final int MSG_TELEMETRY = 7;
+ static final int MSG_SETFREQUENCY = 8;
+ static final int MSG_CRC_ERROR = 9;
+ static final int MSG_SETBAUD = 10;
+
+ // Unique Identification Number for the Notification.
+ // We use it on Notification start, and to cancel it.
+ private int NOTIFICATION = R.string.telemetry_service_label;
+ //private NotificationManager mNM;
+
+ // Timer - we wake up every now and then to decide if the service should stop
+ private Timer timer = new Timer();
+
+ ArrayList<Messenger> mClients = new ArrayList<Messenger>(); // Keeps track of all current registered clients.
+ final Handler mHandler = new IncomingHandler(this);
+ final Messenger mMessenger = new Messenger(mHandler); // Target we publish for clients to send messages to IncomingHandler.
+
+ // Name of the connected device
+ String address;
+ private AltosBluetooth mAltosBluetooth = null;
+ private TelemetryReader mTelemetryReader = null;
+ private TelemetryLogger mTelemetryLogger = null;
+ // Local Bluetooth adapter
+ private BluetoothAdapter mBluetoothAdapter = null;
+
+ private TelemetryState telemetry_state;
+
+ // Last data seen; send to UI when it starts
+
+ // Handler of incoming messages from clients.
+ static class IncomingHandler extends Handler {
+ private final WeakReference<TelemetryService> service;
+ IncomingHandler(TelemetryService s) { service = new WeakReference<TelemetryService>(s); }
+
+ @Override
+ public void handleMessage(Message msg) {
+ TelemetryService s = service.get();
+ if (s == null)
+ return;
+ switch (msg.what) {
+ case MSG_REGISTER_CLIENT:
+ s.mClients.add(msg.replyTo);
+ try {
+ // Now we try to send the freshly connected UI any relavant information about what
+ // we're talking to
+ msg.replyTo.send(s.message());
+ } catch (RemoteException e) {
+ s.mClients.remove(msg.replyTo);
+ }
+ if (D) Log.d(TAG, "Client bound to service");
+ break;
+ case MSG_UNREGISTER_CLIENT:
+ s.mClients.remove(msg.replyTo);
+ if (D) Log.d(TAG, "Client unbound from service");
+ break;
+ case MSG_CONNECT:
+ if (D) Log.d(TAG, "Connect command received");
+ String address = (String) msg.obj;
+ AltosDroidPreferences.set_active_device(address);
+ s.startAltosBluetooth(address);
+ break;
+ case MSG_CONNECTED:
+ if (D) Log.d(TAG, "Connected to device");
+ try {
+ s.connected();
+ } catch (InterruptedException ie) {
+ }
+ break;
+ case MSG_CONNECT_FAILED:
+ if (D) Log.d(TAG, "Connection failed... retrying");
+ if (s.address != null)
+ s.startAltosBluetooth(s.address);
+ break;
+ case MSG_DISCONNECTED:
+ Log.d(TAG, "MSG_DISCONNECTED");
+ s.stopAltosBluetooth();
+ break;
+ case MSG_TELEMETRY:
+ // forward telemetry messages
+ s.telemetry_state.state = (AltosState) msg.obj;
+ if (s.telemetry_state.state != null) {
+ if (D) Log.d(TAG, "Save state");
+ AltosPreferences.set_state(0, s.telemetry_state.state, null);
+ }
+ if (D) Log.d(TAG, "MSG_TELEMETRY");
+ s.sendMessageToClients();
+ break;
+ case MSG_CRC_ERROR:
+ // forward crc error messages
+ s.telemetry_state.crc_errors = (Integer) msg.obj;
+ if (D) Log.d(TAG, "MSG_CRC_ERROR");
+ s.sendMessageToClients();
+ break;
+ case MSG_SETFREQUENCY:
+ if (D) Log.d(TAG, "MSG_SETFREQUENCY");
+ s.telemetry_state.frequency = (Double) msg.obj;
+ if (s.telemetry_state.connect == TelemetryState.CONNECT_CONNECTED) {
+ try {
+ s.mAltosBluetooth.set_radio_frequency(s.telemetry_state.frequency);
+ s.mAltosBluetooth.save_frequency();
+ } catch (InterruptedException e) {
+ } catch (TimeoutException e) {
+ }
+ }
+ s.sendMessageToClients();
+ break;
+ case MSG_SETBAUD:
+ if (D) Log.d(TAG, "MSG_SETBAUD");
+ s.telemetry_state.telemetry_rate = (Integer) msg.obj;
+ if (s.telemetry_state.connect == TelemetryState.CONNECT_CONNECTED) {
+ s.mAltosBluetooth.set_telemetry_rate(s.telemetry_state.telemetry_rate);
+ s.mAltosBluetooth.save_telemetry_rate();
+ }
+ s.sendMessageToClients();
+ break;
+ default:
+ super.handleMessage(msg);
+ }
+ }
+ }
+
+ private Message message() {
+ if (telemetry_state == null)
+ Log.d(TAG, "telemetry_state null!");
+ if (telemetry_state.state == null)
+ Log.d(TAG, "telemetry_state.state null!");
+ return Message.obtain(null, AltosDroid.MSG_STATE, telemetry_state);
+ }
+
+ private void sendMessageToClients() {
+ Message m = message();
+ if (D) Log.d(TAG, String.format("Send message to %d clients", mClients.size()));
+ for (int i=mClients.size()-1; i>=0; i--) {
+ try {
+ if (D) Log.d(TAG, String.format("Send message to client %d", i));
+ mClients.get(i).send(m);
+ } catch (RemoteException e) {
+ mClients.remove(i);
+ }
+ }
+ }
+
+ private void stopAltosBluetooth() {
+ if (D) Log.d(TAG, "stopAltosBluetooth(): begin");
+ telemetry_state.connect = TelemetryState.CONNECT_READY;
+ if (mTelemetryReader != null) {
+ if (D) Log.d(TAG, "stopAltosBluetooth(): stopping TelemetryReader");
+ mTelemetryReader.interrupt();
+ try {
+ mTelemetryReader.join();
+ } catch (InterruptedException e) {
+ }
+ mTelemetryReader = null;
+ }
+ if (mTelemetryLogger != null) {
+ if (D) Log.d(TAG, "stopAltosBluetooth(): stopping TelemetryLogger");
+ mTelemetryLogger.stop();
+ mTelemetryLogger = null;
+ }
+ if (mAltosBluetooth != null) {
+ if (D) Log.d(TAG, "stopAltosBluetooth(): stopping AltosBluetooth");
+ mAltosBluetooth.close();
+ mAltosBluetooth = null;
+ }
+ telemetry_state.config = null;
+ if (D) Log.d(TAG, "stopAltosBluetooth(): send message to clients");
+ sendMessageToClients();
+ }
+
+ private void startAltosBluetooth(String address) {
+ // Get the BLuetoothDevice object
+ BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
+
+ this.address = address;
+ if (mAltosBluetooth == null) {
+ if (D) Log.d(TAG, String.format("startAltosBluetooth(): Connecting to %s (%s)", device.getName(), device.getAddress()));
+ mAltosBluetooth = new AltosBluetooth(device, mHandler);
+ telemetry_state.connect = TelemetryState.CONNECT_CONNECTING;
+ sendMessageToClients();
+ } else {
+ // This is a bit of a hack - if it appears we're still connected, we treat this as a restart.
+ // So, to give a suitable delay to teardown/bringup, we just schedule a resend of a message
+ // to ourselves in a few seconds time that will ultimately call this method again.
+ // ... then we tear down the existing connection.
+ // We do it this way around so that we don't lose a reference to the device when this method
+ // is called on reception of MSG_CONNECT_FAILED in the handler above.
+ mHandler.sendMessageDelayed(Message.obtain(null, MSG_CONNECT, address), 3000);
+ stopAltosBluetooth();
+ }
+ }
+
+ private void connected() throws InterruptedException {
+ if (D) Log.d(TAG, "connected top");
+ try {
+ if (mAltosBluetooth == null)
+ throw new InterruptedException("no bluetooth");
+ telemetry_state.config = mAltosBluetooth.config_data();
+ mAltosBluetooth.set_radio_frequency(telemetry_state.frequency);
+ mAltosBluetooth.set_telemetry_rate(telemetry_state.telemetry_rate);
+ } catch (TimeoutException e) {
+ // If this timed out, then we really want to retry it, but
+ // probably safer to just retry the connection from scratch.
+ mHandler.obtainMessage(MSG_CONNECT_FAILED).sendToTarget();
+ return;
+ }
+
+ if (D) Log.d(TAG, "connected bluetooth configured");
+ telemetry_state.connect = TelemetryState.CONNECT_CONNECTED;
+
+ mTelemetryReader = new TelemetryReader(mAltosBluetooth, mHandler, telemetry_state.state);
+ mTelemetryReader.start();
+
+ if (D) Log.d(TAG, "connected TelemetryReader started");
+
+ mTelemetryLogger = new TelemetryLogger(this, mAltosBluetooth);
+
+ if (D) Log.d(TAG, "Notify UI of connection");
+
+ sendMessageToClients();
+ }
+
+ private void onTimerTick() {
+ if (D) Log.d(TAG, "Timer wakeup");
+ try {
+ if (mClients.size() <= 0 && telemetry_state.connect != TelemetryState.CONNECT_CONNECTED) {
+ stopSelf();
+ }
+ } catch (Throwable t) {
+ Log.e(TAG, "Timer failed: ", t);
+ }
+ }
+
+
+ @Override
+ public void onCreate() {
+ // Get local Bluetooth adapter
+ mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+
+ // If the adapter is null, then Bluetooth is not supported
+ if (mBluetoothAdapter == null) {
+ Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
+ }
+
+ // Initialise preferences
+ AltosDroidPreferences.init(this);
+
+ telemetry_state = new TelemetryState();
+
+ // Create a reference to the NotificationManager so that we can update our notifcation text later
+ //mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
+
+ telemetry_state.connect = TelemetryState.CONNECT_READY;
+
+ AltosSavedState saved_state = AltosPreferences.state(0);
+
+ if (saved_state != null) {
+ if (D) Log.d(TAG, String.format("recovered old state flight %d\n", saved_state.state.flight));
+ telemetry_state.state = saved_state.state;
+ }
+
+ // Start our timer - first event in 10 seconds, then every 10 seconds after that.
+ timer.scheduleAtFixedRate(new TimerTask(){ public void run() {onTimerTick();}}, 10000L, 10000L);
+
+ // Listen for GPS and Network position updates
+ LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
+
+ locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 1, this);
+
+ String address = AltosDroidPreferences.active_device();
+ if (address != null)
+ startAltosBluetooth(address);
+ }
+
+ @Override
+ public int onStartCommand(Intent intent, int flags, int startId) {
+ Log.i("TelemetryService", "Received start id " + startId + ": " + intent);
-// Need the following import to get access to the app resources, since this
-// class is in a sub-package.
-import org.altusmetrum.AltosDroid.R;
+ CharSequence text = getText(R.string.telemetry_service_started);
+ // Create notification to be displayed while the service runs
+ Notification notification = new Notification(R.drawable.am_status_c, text, 0);
+ // The PendingIntent to launch our activity if the user selects this notification
+ PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
+ new Intent(this, AltosDroid.class), 0);
-public class TelemetryService extends Service {
- private NotificationManager mNM;
+ // Set the info for the views that show in the notification panel.
+ notification.setLatestEventInfo(this, getText(R.string.telemetry_service_label), text, contentIntent);
- // Unique Identification Number for the Notification.
- // We use it on Notification start, and to cancel it.
- private int NOTIFICATION = R.string.telemetry_service_label;
+ // Set the notification to be in the "Ongoing" section.
+ notification.flags |= Notification.FLAG_ONGOING_EVENT;
- /**
- * Class for clients to access. Because we know this service always
- * runs in the same process as its clients, we don't need to deal with
- * IPC.
- */
- public class TelemetryBinder extends Binder {
- TelemetryService getService() {
- return TelemetryService.this;
- }
- }
+ // Move us into the foreground.
+ startForeground(NOTIFICATION, notification);
- @Override
- public void onCreate() {
- // Create a reference to the NotificationManager so that we can update our notifcation text later
- mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
- }
+ // We want this service to continue running until it is explicitly
+ // stopped, so return sticky.
+ return START_STICKY;
+ }
- @Override
- public int onStartCommand(Intent intent, int flags, int startId) {
- Log.i("TelemetryService", "Received start id " + startId + ": " + intent);
+ @Override
+ public void onDestroy() {
- CharSequence text = getText(R.string.telemetry_service_started);
+ // Stop listening for location updates
+ ((LocationManager) getSystemService(Context.LOCATION_SERVICE)).removeUpdates(this);
- // Create notification to be displayed while the service runs
- Notification notification = new Notification(R.drawable.am_status_c, text, 0);
+ // Stop the bluetooth Comms threads
+ stopAltosBluetooth();
- // The PendingIntent to launch our activity if the user selects this notification
- PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
- new Intent(this, TelemetryServiceActivities.Controller.class), 0);
+ // Demote us from the foreground, and cancel the persistent notification.
+ stopForeground(true);
- // Set the info for the views that show in the notification panel.
- notification.setLatestEventInfo(this, getText(R.string.telemetry_service_label), text, contentIntent);
+ // Stop our timer
+ if (timer != null) {timer.cancel();}
- // Set the notification to be in the "Ongoing" section.
- notification.flags |= Notification.FLAG_ONGOING_EVENT;
+ // Tell the user we stopped.
+ Toast.makeText(this, R.string.telemetry_service_stopped, Toast.LENGTH_SHORT).show();
+ }
- // Move us into the foreground.
- startForeground(NOTIFICATION, notification);
+ @Override
+ public IBinder onBind(Intent intent) {
+ return mMessenger.getBinder();
+ }
- // We want this service to continue running until it is explicitly
- // stopped, so return sticky.
- return START_STICKY;
- }
- @Override
- public void onDestroy() {
- // Demote us from the foreground, and cancel the persistent notification.
- stopForeground(true);
+ public void onLocationChanged(Location location) {
+ telemetry_state.location = location;
+ if (D) Log.d(TAG, "location changed");
+ sendMessageToClients();
+ }
- // Tell the user we stopped.
- Toast.makeText(this, R.string.telemetry_service_stopped, Toast.LENGTH_SHORT).show();
- }
+ public void onStatusChanged(String provider, int status, Bundle extras) {
+ }
- @Override
- public IBinder onBind(Intent intent) {
- return mBinder;
- }
+ public void onProviderEnabled(String provider) {
+ }
- // This is the object that receives interactions from clients. See
- // RemoteService for a more complete example.
- private final IBinder mBinder = new TelemetryBinder();
+ public void onProviderDisabled(String provider) {
+ }
}
projects / fw / altos / blobdiff