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   1 /*
   2  * Copyright © 2012 Mike Beattie <mike@ethernal.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 package org.altusmetrum.AltosDroid;
  20
  21 import java.lang.ref.WeakReference;
  22 import java.util.concurrent.TimeoutException;
  23 import java.util.*;
  24
  25 import android.app.Notification;
  26 //import android.app.NotificationManager;
  27 import android.app.PendingIntent;
  28 import android.app.Service;
  29 import android.bluetooth.BluetoothDevice;
  30 import android.bluetooth.BluetoothAdapter;
  31 import android.hardware.usb.*;
  32 import android.content.Intent;
  33 import android.content.Context;
  34 import android.os.Bundle;
  35 import android.os.IBinder;
  36 import android.os.Handler;
  37 import android.os.Message;
  38 import android.os.Messenger;
  39 import android.os.RemoteException;
  40 import android.os.Looper;
  41 import android.widget.Toast;
  42 import android.location.Criteria;
  43
  44 import org.altusmetrum.altoslib_11.*;
  45
  46 public class TelemetryService extends Service implements AltosIdleMonitorListener {
  47
  48         static final int MSG_REGISTER_CLIENT   = 1;
  49         static final int MSG_UNREGISTER_CLIENT = 2;
  50         static final int MSG_CONNECT           = 3;
  51         static final int MSG_OPEN_USB          = 4;
  52         static final int MSG_CONNECTED         = 5;
  53         static final int MSG_CONNECT_FAILED    = 6;
  54         static final int MSG_DISCONNECTED      = 7;
  55         static final int MSG_TELEMETRY         = 8;
  56         static final int MSG_SETFREQUENCY      = 9;
  57         static final int MSG_CRC_ERROR         = 10;
  58         static final int MSG_SETBAUD           = 11;
  59         static final int MSG_DISCONNECT        = 12;
  60         static final int MSG_DELETE_SERIAL     = 13;
  61         static final int MSG_BLUETOOTH_ENABLED = 14;
  62         static final int MSG_MONITOR_IDLE_START= 15;
  63         static final int MSG_MONITOR_IDLE_STOP = 16;
  64         static final int MSG_REBOOT            = 17;
  65         static final int MSG_IGNITER_QUERY     = 18;
  66         static final int MSG_IGNITER_FIRE      = 19;
  67
  68         // Unique Identification Number for the Notification.
  69         // We use it on Notification start, and to cancel it.
  70         private int NOTIFICATION = R.string.telemetry_service_label;
  71         //private NotificationManager mNM;
  72
  73         ArrayList<Messenger> clients = new ArrayList<Messenger>(); // Keeps track of all current registered clients.
  74         final Handler   handler   = new IncomingHandler(this);
  75         final Messenger messenger = new Messenger(handler); // Target we publish for clients to send messages to IncomingHandler.
  76
  77         // Name of the connected device
  78         DeviceAddress address;
  79         private AltosDroidLink  altos_link  = null;
  80         private TelemetryReader telemetry_reader = null;
  81         private TelemetryLogger telemetry_logger = null;
  82
  83         // Local Bluetooth adapter
  84         private BluetoothAdapter bluetooth_adapter = null;
  85
  86         // Last data seen; send to UI when it starts
  87         private TelemetryState  telemetry_state;
  88
  89         // Idle monitor if active
  90         AltosIdleMonitor idle_monitor = null;
  91
  92         // Igniter bits
  93         AltosIgnite ignite = null;
  94         boolean ignite_running;
  95
  96         // Handler of incoming messages from clients.
  97         static class IncomingHandler extends Handler {
  98                 private final WeakReference<TelemetryService> service;
  99                 IncomingHandler(TelemetryService s) { service = new WeakReference<TelemetryService>(s); }
 100
 101                 @Override
 102                 public void handleMessage(Message msg) {
 103                         DeviceAddress address;
 104
 105                         TelemetryService s = service.get();
 106                         AltosDroidLink bt = null;
 107                         if (s == null)
 108                                 return;
 109
 110                         switch (msg.what) {
 111
 112                                 /* Messages from application */
 113                         case MSG_REGISTER_CLIENT:
 114                                 s.add_client(msg.replyTo);
 115                                 break;
 116                         case MSG_UNREGISTER_CLIENT:
 117                                 s.remove_client(msg.replyTo);
 118                                 break;
 119                         case MSG_CONNECT:
 120                                 AltosDebug.debug("Connect command received");
 121                                 address = (DeviceAddress) msg.obj;
 122                                 AltosDroidPreferences.set_active_device(address);
 123                                 s.start_altos_bluetooth(address, false);
 124                                 break;
 125                         case MSG_OPEN_USB:
 126                                 AltosDebug.debug("Open USB command received");
 127                                 UsbDevice device = (UsbDevice) msg.obj;
 128                                 s.start_usb(device);
 129                                 break;
 130                         case MSG_DISCONNECT:
 131                                 AltosDebug.debug("Disconnect command received");
 132                                 s.address = null;
 133                                 if (!(Boolean) msg.obj)
 134                                         AltosDroidPreferences.set_active_device(null);
 135                                 s.disconnect(true);
 136                                 break;
 137                         case MSG_DELETE_SERIAL:
 138                                 AltosDebug.debug("Delete Serial command received");
 139                                 s.delete_serial((Integer) msg.obj);
 140                                 break;
 141                         case MSG_SETFREQUENCY:
 142                                 AltosDebug.debug("MSG_SETFREQUENCY");
 143                                 s.telemetry_state.frequency = (Double) msg.obj;
 144                                 if (s.telemetry_state.connect == TelemetryState.CONNECT_CONNECTED) {
 145                                         try {
 146                                                 s.altos_link.set_radio_frequency(s.telemetry_state.frequency);
 147                                                 s.altos_link.save_frequency();
 148                                         } catch (InterruptedException e) {
 149                                         } catch (TimeoutException e) {
 150                                         }
 151                                 }
 152                                 s.send_to_clients();
 153                                 break;
 154                         case MSG_SETBAUD:
 155                                 AltosDebug.debug("MSG_SETBAUD");
 156                                 s.telemetry_state.telemetry_rate = (Integer) msg.obj;
 157                                 if (s.telemetry_state.connect == TelemetryState.CONNECT_CONNECTED) {
 158                                         s.altos_link.set_telemetry_rate(s.telemetry_state.telemetry_rate);
 159                                         s.altos_link.save_telemetry_rate();
 160                                 }
 161                                 s.send_to_clients();
 162                                 break;
 163
 164                                 /*
 165                                  *Messages from AltosBluetooth
 166                                  */
 167                         case MSG_CONNECTED:
 168                                 AltosDebug.debug("MSG_CONNECTED");
 169                                 bt = (AltosDroidLink) msg.obj;
 170
 171                                 if (bt != s.altos_link) {
 172                                         AltosDebug.debug("Stale message");
 173                                         break;
 174                                 }
 175                                 AltosDebug.debug("Connected to device");
 176                                 try {
 177                                         s.connected();
 178                                 } catch (InterruptedException ie) {
 179                                 }
 180                                 break;
 181                         case MSG_CONNECT_FAILED:
 182                                 AltosDebug.debug("MSG_CONNECT_FAILED");
 183                                 bt = (AltosDroidLink) msg.obj;
 184
 185                                 if (bt != s.altos_link) {
 186                                         AltosDebug.debug("Stale message");
 187                                         break;
 188                                 }
 189                                 if (s.address != null) {
 190                                         AltosDebug.debug("Connection failed... retrying");
 191                                         s.start_altos_bluetooth(s.address, true);
 192                                 } else {
 193                                         s.disconnect(true);
 194                                 }
 195                                 break;
 196                         case MSG_DISCONNECTED:
 197
 198                                 /* This can be sent by either AltosDroidLink or TelemetryReader */
 199                                 AltosDebug.debug("MSG_DISCONNECTED");
 200                                 bt = (AltosDroidLink) msg.obj;
 201
 202                                 if (bt != s.altos_link) {
 203                                         AltosDebug.debug("Stale message");
 204                                         break;
 205                                 }
 206                                 if (s.address != null) {
 207                                         AltosDebug.debug("Connection lost... retrying");
 208                                         s.start_altos_bluetooth(s.address, true);
 209                                 } else {
 210                                         s.disconnect(true);
 211                                 }
 212                                 break;
 213
 214                                 /*
 215                                  * Messages from TelemetryReader
 216                                  */
 217                         case MSG_TELEMETRY:
 218                                 s.telemetry((AltosTelemetry) msg.obj);
 219                                 break;
 220                         case MSG_CRC_ERROR:
 221                                 // forward crc error messages
 222                                 s.telemetry_state.crc_errors = (Integer) msg.obj;
 223                                 s.send_to_clients();
 224                                 break;
 225                         case MSG_BLUETOOTH_ENABLED:
 226                                 AltosDebug.debug("TelemetryService notes that BT is now enabled");
 227                                 address = AltosDroidPreferences.active_device();
 228                                 if (address != null && !address.address.startsWith("USB"))
 229                                         s.start_altos_bluetooth(address, false);
 230                                 break;
 231                         case MSG_MONITOR_IDLE_START:
 232                                 AltosDebug.debug("start monitor idle");
 233                                 s.start_idle_monitor();
 234                                 break;
 235                         case MSG_MONITOR_IDLE_STOP:
 236                                 AltosDebug.debug("stop monitor idle");
 237                                 s.stop_idle_monitor();
 238                                 break;
 239                         case MSG_REBOOT:
 240                                 AltosDebug.debug("reboot");
 241                                 s.reboot_remote();
 242                                 break;
 243                         case MSG_IGNITER_QUERY:
 244                                 AltosDebug.debug("igniter query");
 245                                 s.igniter_query(msg.replyTo);
 246                                 break;
 247                         case MSG_IGNITER_FIRE:
 248                                 AltosDebug.debug("igniter fire");
 249                                 s.igniter_fire((String) msg.obj);
 250                                 break;
 251                         default:
 252                                 super.handleMessage(msg);
 253                         }
 254                 }
 255         }
 256
 257         /* Handle telemetry packet
 258          */
 259         private void telemetry(AltosTelemetry telem) {
 260                 AltosState      state;
 261
 262                 if (telemetry_state.states.containsKey(telem.serial))
 263                         state = telemetry_state.states.get(telem.serial).clone();
 264                 else
 265                         state = new AltosState();
 266                 telem.update_state(state);
 267                 telemetry_state.states.put(telem.serial, state);
 268                 if (state != null) {
 269                         AltosPreferences.set_state(state);
 270                 }
 271                 send_to_clients();
 272         }
 273
 274         /* Construct the message to deliver to clients
 275          */
 276         private Message message() {
 277                 if (telemetry_state == null)
 278                         AltosDebug.debug("telemetry_state null!");
 279                 if (telemetry_state.states == null)
 280                         AltosDebug.debug("telemetry_state.states null!");
 281                 return Message.obtain(null, AltosDroid.MSG_STATE, telemetry_state);
 282         }
 283
 284         /* A new friend has connected
 285          */
 286         private void add_client(Messenger client) {
 287
 288                 clients.add(client);
 289                 AltosDebug.debug("Client bound to service");
 290
 291                 /* On connect, send the current state to the new client
 292                  */
 293                 send_to_client(client);
 294                 send_idle_mode_to_client(client);
 295
 296                 /* If we've got an address from a previous session, then
 297                  * go ahead and try to reconnect to the device
 298                  */
 299                 if (address != null && telemetry_state.connect == TelemetryState.CONNECT_DISCONNECTED) {
 300                         AltosDebug.debug("Reconnecting now...");
 301                         start_altos_bluetooth(address, false);
 302                 }
 303         }
 304
 305         /* A client has disconnected, clean up
 306          */
 307         private void remove_client(Messenger client) {
 308                 clients.remove(client);
 309                 AltosDebug.debug("Client unbound from service");
 310
 311                 /* When the list of clients is empty, stop the service if
 312                  * we have no current telemetry source
 313                  */
 314
 315                  if (clients.isEmpty() && telemetry_state.connect == TelemetryState.CONNECT_DISCONNECTED) {
 316                          AltosDebug.debug("No clients, no connection. Stopping\n");
 317                          stopSelf();
 318                  }
 319         }
 320
 321         private void send_to_client(Messenger client) {
 322                 Message m = message();
 323                 try {
 324                         client.send(m);
 325                 } catch (RemoteException e) {
 326                         AltosDebug.error("Client %s disappeared", client.toString());
 327                         remove_client(client);
 328                 }
 329         }
 330
 331         private void send_to_clients() {
 332                 for (Messenger client : clients)
 333                         send_to_client(client);
 334         }
 335
 336         private void send_idle_mode_to_client(Messenger client) {
 337                 Message m = Message.obtain(null, AltosDroid.MSG_IDLE_MODE, idle_monitor != null);
 338                 try {
 339                         client.send(m);
 340                 } catch (RemoteException e) {
 341                         AltosDebug.error("Client %s disappeared", client.toString());
 342                         remove_client(client);
 343                 }
 344         }
 345
 346         private void send_idle_mode_to_clients() {
 347                 for (Messenger client : clients)
 348                         send_idle_mode_to_client(client);
 349         }
 350
 351         private void telemetry_start() {
 352                 if (telemetry_reader == null && idle_monitor == null && !ignite_running) {
 353                         telemetry_reader = new TelemetryReader(altos_link, handler);
 354                         telemetry_reader.start();
 355                 }
 356         }
 357
 358         private void telemetry_stop() {
 359                 if (telemetry_reader != null) {
 360                         AltosDebug.debug("disconnect(): stopping TelemetryReader");
 361                         telemetry_reader.interrupt();
 362                         try {
 363                                 telemetry_reader.join();
 364                         } catch (InterruptedException e) {
 365                         }
 366                         telemetry_reader = null;
 367                 }
 368         }
 369
 370         private void disconnect(boolean notify) {
 371                 AltosDebug.debug("disconnect(): begin");
 372
 373                 telemetry_state.connect = TelemetryState.CONNECT_DISCONNECTED;
 374                 telemetry_state.address = null;
 375
 376                 if (idle_monitor != null)
 377                         stop_idle_monitor();
 378
 379                 if (altos_link != null)
 380                         altos_link.closing();
 381
 382                 stop_receiver_voltage_timer();
 383
 384                 telemetry_stop();
 385                 if (telemetry_logger != null) {
 386                         AltosDebug.debug("disconnect(): stopping TelemetryLogger");
 387                         telemetry_logger.stop();
 388                         telemetry_logger = null;
 389                 }
 390                 if (altos_link != null) {
 391                         AltosDebug.debug("disconnect(): stopping AltosDroidLink");
 392                         altos_link.close();
 393                         altos_link = null;
 394                         ignite = null;
 395                 }
 396                 telemetry_state.config = null;
 397                 if (notify) {
 398                         AltosDebug.debug("disconnect(): send message to clients");
 399                         send_to_clients();
 400                         if (clients.isEmpty()) {
 401                                 AltosDebug.debug("disconnect(): no clients, terminating");
 402                                 stopSelf();
 403                         }
 404                 }
 405         }
 406
 407         private void start_usb(UsbDevice device) {
 408                 AltosUsb        d = new AltosUsb(this, device, handler);
 409
 410                 if (d != null) {
 411                         disconnect(false);
 412                         altos_link = d;
 413                         try {
 414                                 connected();
 415                         } catch (InterruptedException ie) {
 416                         }
 417                 }
 418         }
 419
 420         private void delete_serial(int serial) {
 421                 telemetry_state.states.remove((Integer) serial);
 422                 AltosPreferences.remove_state(serial);
 423                 send_to_clients();
 424         }
 425
 426         private void start_altos_bluetooth(DeviceAddress address, boolean pause) {
 427                 if (bluetooth_adapter == null || !bluetooth_adapter.isEnabled())
 428                         return;
 429
 430                 disconnect(false);
 431
 432                 // Get the BluetoothDevice object
 433                 BluetoothDevice device = bluetooth_adapter.getRemoteDevice(address.address);
 434
 435                 this.address = address;
 436                 AltosDebug.debug("start_altos_bluetooth(): Connecting to %s (%s)", device.getName(), device.getAddress());
 437                 altos_link = new AltosBluetooth(device, handler, pause);
 438                 telemetry_state.connect = TelemetryState.CONNECT_CONNECTING;
 439                 telemetry_state.address = address;
 440                 send_to_clients();
 441         }
 442
 443         private void start_idle_monitor() {
 444                 if (altos_link != null && idle_monitor == null) {
 445                         telemetry_stop();
 446                         idle_monitor = new AltosIdleMonitor(this, altos_link, true, false);
 447                         idle_monitor.set_callsign(AltosPreferences.callsign());
 448                         idle_monitor.start();
 449                         send_idle_mode_to_clients();
 450                 }
 451         }
 452
 453         private void stop_idle_monitor() {
 454                 if (idle_monitor != null) {
 455                         try {
 456                                 idle_monitor.abort();
 457                         } catch (InterruptedException ie) {
 458                         }
 459                         idle_monitor = null;
 460                         telemetry_start();
 461                         send_idle_mode_to_clients();
 462                 }
 463         }
 464
 465         private void reboot_remote() {
 466                 if (altos_link != null) {
 467                         stop_idle_monitor();
 468                         try {
 469                                 altos_link.start_remote();
 470                                 altos_link.printf("r eboot\n");
 471                                 altos_link.flush_output();
 472                         } catch (TimeoutException te) {
 473                         } catch (InterruptedException ie) {
 474                         } finally {
 475                                 try {
 476                                         altos_link.stop_remote();
 477                                 } catch (InterruptedException ie) {
 478                                 }
 479                         }
 480                 }
 481         }
 482
 483         private void ensure_ignite() {
 484                 if (ignite == null)
 485                         ignite = new AltosIgnite(altos_link, true, false);
 486         }
 487
 488         private synchronized void igniter_query(Messenger client) {
 489                 ensure_ignite();
 490                 HashMap<String,Integer> status_map = null;
 491                 ignite_running = true;
 492                 try {
 493                         stop_idle_monitor();
 494                         try {
 495                                 status_map = ignite.status();
 496                         } catch (InterruptedException ie) {
 497                                 AltosDebug.debug("ignite.status interrupted");
 498                         } catch (TimeoutException te) {
 499                                 AltosDebug.debug("ignite.status timeout");
 500                         }
 501                 } finally {
 502                         ignite_running = false;
 503                 }
 504                 Message m = Message.obtain(null, AltosDroid.MSG_IGNITER_STATUS, status_map);
 505                 try {
 506                         client.send(m);
 507                 } catch (RemoteException e) {
 508                 }
 509         }
 510
 511         private synchronized void igniter_fire(String igniter) {
 512                 ensure_ignite();
 513                 ignite_running = true;
 514                 stop_idle_monitor();
 515                 try {
 516                         ignite.fire(igniter);
 517                 } catch (InterruptedException ie) {
 518                 } finally {
 519                         ignite_running = false;
 520                 }
 521         }
 522
 523         // Timer for receiver battery voltage monitoring
 524         Timer receiver_voltage_timer;
 525
 526         private void update_receiver_voltage() {
 527                 if (altos_link != null && idle_monitor == null && !ignite_running) {
 528                         try {
 529                                 double  voltage = altos_link.monitor_battery();
 530                                 telemetry_state.receiver_battery = voltage;
 531                                 send_to_clients();
 532                         } catch (InterruptedException ie) {
 533                         }
 534                 }
 535         }
 536
 537         private void stop_receiver_voltage_timer() {
 538                 if (receiver_voltage_timer != null) {
 539                         receiver_voltage_timer.cancel();
 540                         receiver_voltage_timer.purge();
 541                         receiver_voltage_timer = null;
 542                 }
 543         }
 544
 545         private void start_receiver_voltage_timer() {
 546                 if (receiver_voltage_timer == null && altos_link.has_monitor_battery()) {
 547                         receiver_voltage_timer = new Timer();
 548                         receiver_voltage_timer.scheduleAtFixedRate(new TimerTask() { public void run() {update_receiver_voltage();}}, 1000L, 10000L);
 549                 }
 550         }
 551
 552         private void connected() throws InterruptedException {
 553                 AltosDebug.debug("connected top");
 554                 AltosDebug.check_ui("connected\n");
 555                 try {
 556                         if (altos_link == null)
 557                                 throw new InterruptedException("no bluetooth");
 558                         telemetry_state.config = altos_link.config_data();
 559                         altos_link.set_radio_frequency(telemetry_state.frequency);
 560                         altos_link.set_telemetry_rate(telemetry_state.telemetry_rate);
 561                 } catch (TimeoutException e) {
 562                         // If this timed out, then we really want to retry it, but
 563                         // probably safer to just retry the connection from scratch.
 564                         AltosDebug.debug("connected timeout");
 565                         if (address != null) {
 566                                 AltosDebug.debug("connected timeout, retrying");
 567                                 start_altos_bluetooth(address, true);
 568                         } else {
 569                                 handler.obtainMessage(MSG_CONNECT_FAILED).sendToTarget();
 570                                 disconnect(true);
 571                         }
 572                         return;
 573                 }
 574
 575                 AltosDebug.debug("connected bluetooth configured");
 576                 telemetry_state.connect = TelemetryState.CONNECT_CONNECTED;
 577                 telemetry_state.address = address;
 578
 579                 telemetry_start();
 580
 581                 AltosDebug.debug("connected TelemetryReader started");
 582
 583                 telemetry_logger = new TelemetryLogger(this, altos_link);
 584
 585                 start_receiver_voltage_timer();
 586
 587                 AltosDebug.debug("Notify UI of connection");
 588
 589                 send_to_clients();
 590         }
 591
 592
 593         @Override
 594         public void onCreate() {
 595
 596                 AltosDebug.init(this);
 597
 598                 // Initialise preferences
 599                 AltosDroidPreferences.init(this);
 600
 601                 // Get local Bluetooth adapter
 602                 bluetooth_adapter = BluetoothAdapter.getDefaultAdapter();
 603
 604                 telemetry_state = new TelemetryState();
 605
 606                 // Create a reference to the NotificationManager so that we can update our notifcation text later
 607                 //mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
 608
 609                 telemetry_state.connect = TelemetryState.CONNECT_DISCONNECTED;
 610                 telemetry_state.address = null;
 611
 612                 /* Pull the saved state information out of the preferences database
 613                  */
 614                 ArrayList<Integer> serials = AltosPreferences.list_states();
 615
 616                 telemetry_state.latest_serial = AltosPreferences.latest_state();
 617
 618                 AltosDebug.debug("latest serial %d\n", telemetry_state.latest_serial);
 619
 620                 for (int serial : serials) {
 621                         AltosState saved_state = AltosPreferences.state(serial);
 622                         if (saved_state != null) {
 623                                 if (telemetry_state.latest_serial == 0)
 624                                         telemetry_state.latest_serial = serial;
 625
 626                                 AltosDebug.debug("recovered old state serial %d flight %d",
 627                                                  serial,
 628                                                  saved_state.flight);
 629                                 if (saved_state.gps != null)
 630                                         AltosDebug.debug("\tposition %f,%f",
 631                                                          saved_state.gps.lat,
 632                                                          saved_state.gps.lon);
 633                                 telemetry_state.states.put(serial, saved_state);
 634                         } else {
 635                                 AltosDebug.debug("Failed to recover state for %d", serial);
 636                                 AltosPreferences.remove_state(serial);
 637                         }
 638                 }
 639         }
 640
 641         @Override
 642         public int onStartCommand(Intent intent, int flags, int startId) {
 643                 AltosDebug.debug("Received start id %d: %s", startId, intent);
 644
 645                 CharSequence text = getText(R.string.telemetry_service_started);
 646
 647                 // Create notification to be displayed while the service runs
 648                 Notification notification = new Notification(R.drawable.am_status_c, text, 0);
 649
 650                 // The PendingIntent to launch our activity if the user selects this notification
 651                 PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
 652                                 new Intent(this, AltosDroid.class), 0);
 653
 654                 // Set the info for the views that show in the notification panel.
 655                 notification.setLatestEventInfo(this, getText(R.string.telemetry_service_label), text, contentIntent);
 656
 657                 // Set the notification to be in the "Ongoing" section.
 658                 notification.flags |= Notification.FLAG_ONGOING_EVENT;
 659
 660                 // Move us into the foreground.
 661                 startForeground(NOTIFICATION, notification);
 662
 663                 /* Start bluetooth if we don't have a connection already */
 664                 if (intent != null &&
 665                     (telemetry_state.connect == TelemetryState.CONNECT_NONE ||
 666                      telemetry_state.connect == TelemetryState.CONNECT_DISCONNECTED))
 667                 {
 668                         String  action = intent.getAction();
 669
 670                         if (action.equals(AltosDroid.ACTION_BLUETOOTH)) {
 671                                 DeviceAddress address = AltosDroidPreferences.active_device();
 672                                 if (address != null && !address.address.startsWith("USB"))
 673                                         start_altos_bluetooth(address, false);
 674                         }
 675                 }
 676
 677                 // We want this service to continue running until it is explicitly
 678                 // stopped, so return sticky.
 679                 return START_STICKY;
 680         }
 681
 682         @Override
 683         public void onDestroy() {
 684
 685                 // Stop the bluetooth Comms threads
 686                 disconnect(true);
 687
 688                 // Demote us from the foreground, and cancel the persistent notification.
 689                 stopForeground(true);
 690
 691                 // Tell the user we stopped.
 692                 Toast.makeText(this, R.string.telemetry_service_stopped, Toast.LENGTH_SHORT).show();
 693         }
 694
 695         @Override
 696         public IBinder onBind(Intent intent) {
 697                 return messenger.getBinder();
 698         }
 699
 700         /* AltosIdleMonitorListener */
 701         public void update(AltosState state, AltosListenerState listener_state) {
 702                 telemetry_state.states.put(state.serial, state);
 703                 telemetry_state.receiver_battery = listener_state.battery;
 704                 send_to_clients();
 705         }
 706
 707         public void failed() {
 708         }
 709
 710         public void error(String reason) {
 711                 stop_idle_monitor();
 712         }
 713 }