/*
- * Copyright © 2012 Mike Beattie <mike@ethernal.org>
+ * Copyright © 2012 Mike Beattie <mike@ethernal.org>
*
* 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
import java.lang.ref.WeakReference;
import java.util.ArrayList;
-import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeoutException;
+import java.util.Timer;
+import java.util.TimerTask;
import android.app.Notification;
//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.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;
-// Need the following import to get access to the app resources, since this
-// class is in a sub-package.
-//import org.altusmetrum.AltosDroid.R;
+import org.altusmetrum.altoslib_5.*;
-import org.altusmetrum.AltosLib.*;
-public class TelemetryService extends Service {
+public class TelemetryService extends Service implements LocationListener {
private static final String TAG = "TelemetryService";
private static final boolean D = true;
static final int MSG_UNREGISTER_CLIENT = 2;
static final int MSG_CONNECT = 3;
static final int MSG_CONNECTED = 4;
-
- public static final int STATE_NONE = 0;
- public static final int STATE_READY = 1;
- public static final int STATE_CONNECTING = 2;
- public static final int STATE_CONNECTED = 3;
-
- // Key names received from the TelemetryService Handler
- public static final String KEY_DEVNAME = "key_devname";
- public static final String KEY_TOAST = "key_toast";
+ 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
- private String mConnectedDeviceName = null;
- private AltosBluetooth mAltosBluetooth = null;
- private int state = STATE_NONE;
- LinkedBlockingQueue<AltosLine> telem;
+ 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 {
@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 {
- msg.replyTo.send(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, s.state, -1));
+ // 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);
}
break;
case MSG_CONNECT:
if (D) Log.d(TAG, "Connect command received");
- s.startAltosBluetooth((BluetoothDevice) msg.obj);
+ 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");
- s.mConnectedDeviceName = msg.getData().getString(KEY_DEVNAME);
- Message m = Message.obtain(null, AltosDroid.MSG_DEVNAME);
- Bundle b = new Bundle();
- b.putString(AltosDroid.KEY_DEVNAME, s.mConnectedDeviceName);
- m.setData(b);
- s.sendMessageToClients(m);
- s.setState(STATE_CONNECTED);
- s.mAltosBluetooth.add_monitor(s.telem);
+ 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 (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 void sendMessageToClients(Message m) {
+ private Message message() {
+ if (telemetry_state == null)
+ Log.d(TAG, "telemetry_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.i(TAG, "Stopping BT");
- setState(STATE_READY);
+ 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.i(TAG, "Closing AltosBluetooth");
+ if (D) Log.d(TAG, "stopAltosBluetooth(): stopping AltosBluetooth");
mAltosBluetooth.close();
mAltosBluetooth = null;
}
- telem.clear();
+ telemetry_state.config = null;
+ if (D) Log.d(TAG, "stopAltosBluetooth(): send message to clients");
+ sendMessageToClients();
}
- private void startAltosBluetooth(BluetoothDevice d) {
- if (D) Log.i(TAG, "Connecting to " + d.getName());
- mAltosBluetooth = new AltosBluetooth(d, mHandler);
- setState(STATE_CONNECTING);
+ 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 synchronized void setState(int s) {
- if (D) Log.d(TAG, "setState() " + state + " -> " + s);
- state = s;
+ 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);
+ mTelemetryReader.start();
+
+ if (D) Log.d(TAG, "connected TelemetryReader started");
- sendMessageToClients(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, state, -1));
+ 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);
- telem = new LinkedBlockingQueue<AltosLine>();
- setState(STATE_READY);
+ telemetry_state.connect = TelemetryState.CONNECT_READY;
+
+ // 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
@Override
public void onDestroy() {
+ // Stop listening for location updates
+ ((LocationManager) getSystemService(Context.LOCATION_SERVICE)).removeUpdates(this);
+
// Stop the bluetooth Comms threads
stopAltosBluetooth();
// Demote us from the foreground, and cancel the persistent notification.
stopForeground(true);
+ // Stop our timer
+ if (timer != null) {timer.cancel();}
+
// Tell the user we stopped.
Toast.makeText(this, R.string.telemetry_service_stopped, Toast.LENGTH_SHORT).show();
}
}
+ public void onLocationChanged(Location location) {
+ telemetry_state.location = location;
+ if (D) Log.d(TAG, "location changed");
+ sendMessageToClients();
+ }
+
+ public void onStatusChanged(String provider, int status, Bundle extras) {
+ }
+
+ public void onProviderEnabled(String provider) {
+ }
+
+ public void onProviderDisabled(String provider) {
+ }
+
}
projects / fw / altos / blobdiff