//import android.os.Message;
import android.util.Log;
-import org.altusmetrum.altoslib_5.*;
+import org.altusmetrum.altoslib_6.*;
public class AltosBluetooth extends AltosLink {
private Handler handler;
private BluetoothAdapter adapter;
- private BluetoothDevice device;
private BluetoothSocket socket;
private InputStream input;
private OutputStream output;
// Constructor
- public AltosBluetooth(BluetoothDevice in_device, Handler in_handler) {
+ public AltosBluetooth(BluetoothDevice device, Handler handler) {
+// set_debug(D);
adapter = BluetoothAdapter.getDefaultAdapter();
- device = in_device;
- handler = in_handler;
+ this.handler = handler;
- connect_thread = new ConnectThread(device);
+ create_socket(device);
+ connect_thread = new ConnectThread();
connect_thread.start();
+ }
+
+ private Object closed_lock = new Object();
+ private boolean closed = false;
+ private boolean closed() {
+ synchronized(closed_lock) {
+ return closed;
+ }
}
- private class ConnectThread extends Thread {
- private final UUID SPP_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
+ private void connected() {
+ if (closed()) {
+ if (D) Log.d(TAG, "connected after closed");
+ return;
+ }
+
+ try {
+ synchronized(this) {
+ if (socket != null) {
+ input = socket.getInputStream();
+ output = socket.getOutputStream();
+
+ input_thread = new Thread(this);
+ input_thread.start();
+
+ // Configure the newly connected device for telemetry
+ print("~\nE 0\n");
+ set_monitor(false);
+ if (D) Log.d(TAG, "ConnectThread: connected");
+
+ /* Let TelemetryService know we're connected
+ */
+ handler.obtainMessage(TelemetryService.MSG_CONNECTED, this).sendToTarget();
+
+ /* Notify other waiting threads that we're connected now
+ */
+ notifyAll();
+ }
+ }
+ } catch (IOException io) {
+ connect_failed();
+ }
+ }
+
+ private void connect_failed() {
+ if (closed()) {
+ if (D) Log.d(TAG, "connect_failed after closed");
+ return;
+ }
+
+ close_socket();
+ input = null;
+ output = null;
+ handler.obtainMessage(TelemetryService.MSG_CONNECT_FAILED, this).sendToTarget();
+ if (D) Log.e(TAG, "ConnectThread: Failed to establish connection");
+ }
+
+ private void disconnected() {
+ if (closed()) {
+ if (D) Log.d(TAG, "disconnected after closed");
+ return;
+ }
- public ConnectThread(BluetoothDevice device) {
- BluetoothSocket tmp_socket = null;
+ if (D) Log.d(TAG, "Sending disconnected message");
+ handler.obtainMessage(TelemetryService.MSG_DISCONNECTED, this).sendToTarget();
+ }
+
+ private void close_socket() {
+ BluetoothSocket tmp_socket;
+
+ synchronized(this) {
+ tmp_socket = socket;
+ socket = null;
+ }
+ if (tmp_socket != null) {
try {
- tmp_socket = device.createInsecureRfcommSocketToServiceRecord(SPP_UUID);
+ tmp_socket.close();
} catch (IOException e) {
- e.printStackTrace();
+ if (D) Log.e(TAG, "close_socket failed");
}
+ }
+ }
+
+ private final UUID SPP_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
+
+ private void create_socket(BluetoothDevice device) {
+
+ BluetoothSocket tmp_socket = null;
+
+ try {
+ tmp_socket = device.createInsecureRfcommSocketToServiceRecord(SPP_UUID);
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ if (socket != null) {
+ if (D) Log.d(TAG, String.format("Socket already allocated %s", socket.toString()));
+ close_socket();
+ }
+ synchronized (this) {
socket = tmp_socket;
}
+ }
+
+ private class ConnectThread extends Thread {
public void run() {
if (D) Log.d(TAG, "ConnectThread: BEGIN");
setName("ConnectThread");
// Always cancel discovery because it will slow down a connection
- adapter.cancelDiscovery();
+ try {
+ adapter.cancelDiscovery();
+ } catch (Exception e) {
+ if (D) Log.d(TAG, String.format("cancelDiscovery exception %s", e.toString()));
+ }
+
+ BluetoothSocket local_socket = null;
synchronized (AltosBluetooth.this) {
- // Make a connection to the BluetoothSocket
+ if (!closed())
+ local_socket = socket;
+ }
+
+ if (local_socket != null) {
try {
+ // Make a connection to the BluetoothSocket
// This is a blocking call and will only return on a
// successful connection or an exception
- socket.connect();
-
- input = socket.getInputStream();
- output = socket.getOutputStream();
+ local_socket.connect();
} catch (IOException e) {
- // Close the socket
- try {
- socket.close();
- } catch (IOException e2) {
- if (D) Log.e(TAG, "ConnectThread: Failed to close() socket after failed connection");
- }
- input = null;
- output = null;
- AltosBluetooth.this.notifyAll();
- handler.obtainMessage(TelemetryService.MSG_CONNECT_FAILED).sendToTarget();
- if (D) Log.e(TAG, "ConnectThread: Failed to establish connection");
- return;
+ if (D) Log.d(TAG, String.format("Connect exception %s", e.toString()));
+ local_socket = null;
}
+ }
- input_thread = new Thread(AltosBluetooth.this);
- input_thread.start();
-
- // Configure the newly connected device for telemetry
- print("~\nE 0\n");
- set_monitor(false);
+ if (local_socket != null) {
+ connected();
+ } else {
+ connect_failed();
+ }
- // Let TelemetryService know we're connected
- handler.obtainMessage(TelemetryService.MSG_CONNECTED).sendToTarget();
+ if (D) Log.d(TAG, "ConnectThread: completed");
+ }
+ }
- // Notify other waiting threads, now that we're connected
- AltosBluetooth.this.notifyAll();
+ public double frequency() {
+ return frequency;
+ }
- // Reset the ConnectThread because we're done
- connect_thread = null;
+ public int telemetry_rate() {
+ return telemetry_rate;
+ }
- if (D) Log.d(TAG, "ConnectThread: Connect completed");
- }
- }
+ public void save_frequency() {
+ AltosPreferences.set_frequency(0, frequency);
+ }
- public void cancel() {
- try {
- if (socket != null)
- socket.close();
- } catch (IOException e) {
- if (D) Log.e(TAG, "ConnectThread: close() of connect socket failed", e);
- }
- }
+ public void save_telemetry_rate() {
+ AltosPreferences.set_telemetry_rate(0, telemetry_rate);
}
private synchronized void wait_connected() throws InterruptedException, IOException {
- if (input == null) {
+ if (input == null && socket != null) {
+ if (D) Log.d(TAG, "wait_connected...");
wait();
- if (input == null) throw new IOException();
+ if (D) Log.d(TAG, "wait_connected done");
}
- }
-
- private void connection_lost() {
- if (D) Log.e(TAG, "Connection lost during I/O");
- handler.obtainMessage(TelemetryService.MSG_DISCONNECTED).sendToTarget();
+ if (socket == null)
+ throw new IOException();
}
public void print(String data) {
output.write(bytes);
if (D) Log.d(TAG, "print(): Wrote bytes: '" + data.replace('\n', '\\') + "'");
} catch (IOException e) {
- connection_lost();
+ disconnected();
} catch (InterruptedException e) {
- connection_lost();
+ disconnected();
}
}
output.write(bytes);
if (D) Log.d(TAG, "print(): Wrote byte: '" + c + "'");
} catch (IOException e) {
- connection_lost();
+ disconnected();
} catch (InterruptedException e) {
- connection_lost();
+ disconnected();
+ }
+ }
+
+ private static final int buffer_size = 1024;
+
+ private byte[] buffer = new byte[buffer_size];
+ private int buffer_len = 0;
+ private int buffer_off = 0;
+
+ private byte[] debug_chars = new byte[buffer_size];
+ private int debug_off;
+
+ private void debug_input(byte b) {
+ if (b == '\n') {
+ Log.d(TAG, " " + new String(debug_chars, 0, debug_off));
+ debug_off = 0;
+ } else {
+ if (debug_off < buffer_size)
+ debug_chars[debug_off++] = b;
}
- }
+ }
public int getchar() {
- try {
- wait_connected();
- return input.read();
- } catch (IOException e) {
- connection_lost();
- } catch (java.lang.InterruptedException e) {
- connection_lost();
+ while (buffer_off == buffer_len) {
+ try {
+ wait_connected();
+ buffer_len = input.read(buffer);
+ buffer_off = 0;
+ } catch (IOException e) {
+ if (D) Log.d(TAG, "getchar IOException");
+ disconnected();
+ return AltosLink.ERROR;
+ } catch (java.lang.InterruptedException e) {
+ if (D) Log.d(TAG, "getchar Interrupted");
+ disconnected();
+ return AltosLink.ERROR;
+ }
+ }
+ if (D)
+ debug_input(buffer[buffer_off]);
+ return buffer[buffer_off++];
+ }
+
+ public void closing() {
+ synchronized(closed_lock) {
+ if (D) Log.d(TAG, "Marked closed true");
+ closed = true;
}
- return AltosLink.ERROR;
}
+
public void close() {
if (D) Log.d(TAG, "close(): begin");
+
+ closing();
+
+ close_socket();
+
synchronized(this) {
- if (D) Log.d(TAG, "close(): synched");
- if (connect_thread != null) {
- if (D) Log.d(TAG, "close(): stopping connect_thread");
- connect_thread.cancel();
- connect_thread = null;
- }
- if (D) Log.d(TAG, "close(): Closing socket");
- try {
- socket.close();
- } catch (IOException e) {
- if (D) Log.e(TAG, "close(): unable to close() socket");
- }
if (input_thread != null) {
if (D) Log.d(TAG, "close(): stopping input_thread");
try {
}
}
-
- // We override this method so that we can add some debugging. Not 100% elegant, but more useful
- // than debugging one char at a time above in getchar()!
- public void add_reply(AltosLine line) throws InterruptedException {
- if (D) Log.d(TAG, String.format("Got REPLY: %s", line.line));
- super.add_reply(line);
- }
-
//public void flush_output() { super.flush_output(); }
// Stubs of required methods when extending AltosLink
projects / fw / altos / blobdiff