import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
+//import android.os.Bundle;
+import android.os.Handler;
+//import android.os.Message;
import android.util.Log;
-import org.altusmetrum.AltosLib.*;
+import org.altusmetrum.altoslib_6.*;
public class AltosBluetooth extends AltosLink {
private static final boolean D = true;
private ConnectThread connect_thread = null;
+ private Thread input_thread = null;
+
+ private Handler handler;
private BluetoothAdapter adapter;
private BluetoothDevice device;
private OutputStream output;
// Constructor
- public AltosBluetooth(BluetoothDevice in_device) {
+ public AltosBluetooth(BluetoothDevice in_device, Handler in_handler) {
+// set_debug(D);
adapter = BluetoothAdapter.getDefaultAdapter();
-
+ device = in_device;
+ handler = in_handler;
connect_thread = new ConnectThread(device);
connect_thread.start();
+
+ }
+
+ private void connected() {
+ 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).sendToTarget();
+
+ /* Notify other waiting threads that we're connected now
+ */
+ notifyAll();
+ }
+ }
+ } catch (IOException io) {
+ connect_failed();
+ }
+ }
+
+ private void connect_failed() {
+ synchronized (this) {
+ if (socket != null) {
+ try {
+ socket.close();
+ } catch (IOException e2) {
+ if (D) Log.e(TAG, "ConnectThread: Failed to close() socket after failed connection");
+ }
+ socket = null;
+ }
+ input = null;
+ output = null;
+ handler.obtainMessage(TelemetryService.MSG_CONNECT_FAILED).sendToTarget();
+ if (D) Log.e(TAG, "ConnectThread: Failed to establish connection");
+ }
+ }
+
+ private Object closing_lock = new Object();
+ private boolean closing = false;
+
+ private void disconnected() {
+ synchronized(closing_lock) {
+ if (D) Log.e(TAG, String.format("Connection lost during I/O. Closing %b", closing));
+ if (!closing) {
+ if (D) Log.d(TAG, "Sending disconnected message");
+ handler.obtainMessage(TelemetryService.MSG_DISCONNECTED).sendToTarget();
+ }
+ }
}
private class ConnectThread extends Thread {
}
public void run() {
- if (D) Log.i(TAG, "BEGIN ConnectThread");
+ if (D) Log.d(TAG, "ConnectThread: BEGIN");
setName("ConnectThread");
// Always cancel discovery because it will slow down a connection
adapter.cancelDiscovery();
- // Make a connection to the BluetoothSocket
- try {
- // This is a blocking call and will only return on a
- // successful connection or an exception
- socket.connect();
- } catch (IOException e) {
- // Close the socket
- try {
- socket.close();
- } catch (IOException e2) {
- if (D) Log.e(TAG, "unable to close() socket during connection failure", e2);
- }
- connection_failed();
- return;
- }
+ BluetoothSocket local_socket;
try {
synchronized (AltosBluetooth.this) {
- input = socket.getInputStream();
- output = socket.getOutputStream();
+ local_socket = socket;
+ }
- // Reset the ConnectThread because we're done
- AltosBluetooth.this.notify();
- connect_thread = null;
- if (D) Log.i(TAG, "Completed connect");
+ if (local_socket != null) {
+ // Make a connection to the BluetoothSocket
+ // This is a blocking call and will only return on a
+ // successful connection or an exception
+ local_socket.connect();
}
- } catch (Exception e) {
- if (D) Log.e(TAG, "Failed to finish connection", e);
- e.printStackTrace();
+
+ connected();
+
+ } catch (IOException e) {
+ connect_failed();
}
+
+ synchronized (AltosBluetooth.this) {
+ /* Reset the ConnectThread because we're done
+ */
+ connect_thread = null;
+ }
+ if (D) Log.d(TAG, "ConnectThread: Connect completed");
}
public void cancel() {
try {
- if (socket != null)
- socket.close();
+ BluetoothSocket local_socket;
+ synchronized(AltosBluetooth.this) {
+ local_socket = socket;
+ socket = null;
+ }
+ if (local_socket != null)
+ local_socket.close();
+
} catch (IOException e) {
- if (D) Log.e(TAG, "close() of connect socket failed", e);
+ if (D) Log.e(TAG, "ConnectThread: close() of connect socket failed", e);
}
}
}
- private synchronized void wait_connected() throws InterruptedException {
- if (input == null) {
+ public double frequency() {
+ return frequency;
+ }
+
+ public int telemetry_rate() {
+ return telemetry_rate;
+ }
+
+ public void save_frequency() {
+ AltosPreferences.set_frequency(0, frequency);
+ }
+
+ public void save_telemetry_rate() {
+ AltosPreferences.set_telemetry_rate(0, telemetry_rate);
+ }
+
+ private synchronized void wait_connected() throws InterruptedException, IOException {
+ if (input == null && socket != null) {
+ if (D) Log.d(TAG, "wait_connected...");
wait();
+ if (D) Log.d(TAG, "wait_connected done");
}
+ if (socket == null)
+ throw new IOException();
}
- private void connection_failed() {
- }
-
public void print(String data) {
byte[] bytes = data.getBytes();
+ if (D) Log.d(TAG, "print(): begin");
try {
wait_connected();
output.write(bytes);
+ if (D) Log.d(TAG, "print(): Wrote bytes: '" + data.replace('\n', '\\') + "'");
} catch (IOException e) {
- connection_failed();
+ disconnected();
} catch (InterruptedException e) {
- connection_failed();
+ disconnected();
}
}
- public int getchar() {
+ public void putchar(byte c) {
+ byte[] bytes = { c };
+ if (D) Log.d(TAG, "print(): begin");
try {
wait_connected();
- return input.read();
+ output.write(bytes);
+ if (D) Log.d(TAG, "print(): Wrote byte: '" + c + "'");
} catch (IOException e) {
- connection_failed();
- } catch (java.lang.InterruptedException e) {
- connection_failed();
+ disconnected();
+ } catch (InterruptedException e) {
+ 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;
+
+ public int getchar() {
+ 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;
+ }
}
- return AltosLink.ERROR;
+ return buffer[buffer_off++];
}
-
+
+ public void closing() {
+ synchronized(closing_lock) {
+ if (D) Log.d(TAG, "Marked closing true");
+ closing = true;
+ }
+ }
+
+
public void close() {
+ if (D) Log.d(TAG, "close(): begin");
+
+ closing();
+
synchronized(this) {
- if (connect_thread != null) {
- connect_thread.cancel();
- connect_thread = null;
+ if (D) Log.d(TAG, "close(): synched");
+
+ if (socket != 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");
+ }
+ socket = null;
+ }
+ connect_thread = null;
+ if (input_thread != null) {
+ if (D) Log.d(TAG, "close(): stopping input_thread");
+ try {
+ if (D) Log.d(TAG, "close(): input_thread.interrupt().....");
+ input_thread.interrupt();
+ if (D) Log.d(TAG, "close(): input_thread.join().....");
+ input_thread.join();
+ } catch (Exception e) {}
+ input_thread = null;
}
+ input = null;
+ output = null;
+ notifyAll();
}
}
+ // 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
public boolean can_cancel_reply() { return false; }
public boolean show_reply_timeout() { return true; }
public void hide_reply_timeout() { }
projects / fw / altos / blobdiff