import java.lang.ref.WeakReference;
import java.util.ArrayList;
-import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeoutException;
import android.app.Notification;
//import android.app.NotificationManager;
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;
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";
-
// Unique Identification Number for the Notification.
// We use it on Notification start, and to cancel it.
private int NOTIFICATION = R.string.telemetry_service_label;
final Messenger mMessenger = new Messenger(mHandler); // Target we publish for clients to send messages to IncomingHandler.
// Name of the connected device
- private BluetoothDevice device = null;
- private String mConnectedDeviceName = null;
- private AltosBluetooth mAltosBluetooth = null;
+ private BluetoothDevice device = null;
+ private AltosBluetooth mAltosBluetooth = null;
+ private AltosConfigData mConfigData = null;
+ private TelemetryReader mTelemetryReader = null;
+
+ // internally track state of bluetooth connection
private int state = STATE_NONE;
- LinkedBlockingQueue<AltosLine> telem;
// Handler of incoming messages from clients.
static class IncomingHandler extends Handler {
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 - Basically state and Config Data.
+ msg.replyTo.send(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, s.state, -1, s.mConfigData));
} catch (RemoteException e) {
s.mClients.remove(msg.replyTo);
}
break;
case MSG_CONNECTED:
if (D) Log.d(TAG, "Connected to device");
- s.mConnectedDeviceName = s.device.getName();
- s.sendMessageToClients(Message.obtain(null, AltosDroid.MSG_DEVNAME, s.mConnectedDeviceName));
- s.setState(STATE_CONNECTED);
- s.mAltosBluetooth.add_monitor(s.telem);
+ s.connected();
+ break;
+ case MSG_CONNECT_FAILED:
+ if (D) Log.d(TAG, "Connection failed... retrying");
+ s.startAltosBluetooth();
+ break;
+ case MSG_DISCONNECTED:
+ // Only do the following if we haven't been shutdown elsewhere..
+ if (s.device != null) {
+ if (D) Log.d(TAG, "Disconnected from " + s.device.getName());
+ s.stopAltosBluetooth();
+ }
+ break;
+ case MSG_TELEMETRY:
+ s.sendMessageToClients(Message.obtain(null, AltosDroid.MSG_TELEMETRY, msg.obj));
break;
default:
super.handleMessage(msg);
}
private void stopAltosBluetooth() {
- if (D) Log.i(TAG, "Stopping BT");
+ if (D) Log.d(TAG, "stopAltosBluetooth(): begin");
setState(STATE_READY);
+ if (mTelemetryReader != null) {
+ if (D) Log.d(TAG, "stopAltosBluetooth(): stopping TelemetryReader");
+ mTelemetryReader.interrupt();
+ try {
+ mTelemetryReader.join();
+ } catch (InterruptedException e) {
+ }
+ mTelemetryReader = null;
+ }
if (mAltosBluetooth != null) {
- if (D) Log.i(TAG, "Closing AltosBluetooth");
+ if (D) Log.d(TAG, "stopAltosBluetooth(): stopping AltosBluetooth");
mAltosBluetooth.close();
mAltosBluetooth = null;
}
- mConnectedDeviceName = null;
device = null;
- telem.clear();
+ mConfigData = null;
}
private void startAltosBluetooth() {
if (mAltosBluetooth == null) {
- if (D) Log.i(TAG, "Connecting to " + device.getName());
+ if (D) Log.d(TAG, String.format("startAltosBluetooth(): Connecting to %s (%s)", device.getName(), device.getAddress()));
mAltosBluetooth = new AltosBluetooth(device, mHandler);
setState(STATE_CONNECTING);
} 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, device), 3000);
stopAltosBluetooth();
- mHandler.sendMessageDelayed(Message.obtain(null, MSG_CONNECT, device), 1000);
}
}
private synchronized void setState(int s) {
- if (D) Log.d(TAG, "setState() " + state + " -> " + s);
+ if (D) Log.d(TAG, "setState(): " + state + " -> " + s);
state = s;
- sendMessageToClients(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, state, -1));
+ // This shouldn't be required - mConfigData should be null for any non-connected
+ // state, but to be safe and to reduce message size
+ AltosConfigData acd = (state == STATE_CONNECTED) ? mConfigData : null;
+
+ sendMessageToClients(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, state, -1, acd));
+ }
+
+ private void connected() {
+ try {
+ mConfigData = mAltosBluetooth.config_data();
+ } catch (InterruptedException e) {
+ } 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;
+ }
+
+ setState(STATE_CONNECTED);
+
+ mTelemetryReader = new TelemetryReader(mAltosBluetooth, mHandler);
+ mTelemetryReader.start();
}
+
@Override
public void onCreate() {
// 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);
}
projects / fw / altos / blobdiff