git.gag.com Git - fw/altos/blob - altosui/AltosSerial.java

   1 /*
   2  * Copyright © 2010 Keith Packard <keithp@keithp.com>
   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; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 /*
  19  * Deal with TeleDongle on a serial port
  20  */
  21
  22 package altosui;
  23
  24 import java.io.*;
  25 import java.util.*;
  26 import java.awt.*;
  27 import javax.swing.*;
  28 import org.altusmetrum.altoslib_2.*;
  29 import org.altusmetrum.altosuilib_1.*;
  30
  31 import libaltosJNI.*;
  32
  33 /*
  34  * This class reads from the serial port and places each received
  35  * line in a queue. Dealing with that queue is left up to other
  36  * threads.
  37  */
  38
  39 public class AltosSerial extends AltosLink  {
  40
  41         static java.util.List<String> devices_opened = Collections.synchronizedList(new LinkedList<String>());
  42
  43         AltosDevice device;
  44         SWIGTYPE_p_altos_file altos;
  45         Thread input_thread;
  46         String line;
  47         byte[] line_bytes;
  48         int line_count;
  49         Frame frame;
  50
  51         public int getchar() {
  52                 if (altos == null)
  53                         return ERROR;
  54                 return libaltos.altos_getchar(altos, 0);
  55         }
  56
  57         public void flush_output() {
  58                 super.flush_output();
  59                 if (altos != null) {
  60                         if (libaltos.altos_flush(altos) != 0)
  61                                 close_serial();
  62                 }
  63         }
  64
  65         JDialog         timeout_dialog;
  66
  67         private void start_timeout_dialog_internal() {
  68
  69                 Object[] options = { "Cancel" };
  70
  71                 JOptionPane     pane = new JOptionPane();
  72                 pane.setMessage(String.format("Connecting to %s, %7.3f MHz as %s", device.toShortString(), frequency, callsign));
  73                 pane.setOptions(options);
  74                 pane.setInitialValue(null);
  75
  76                 timeout_dialog = pane.createDialog(frame, "Connecting...");
  77
  78                 timeout_dialog.setVisible(true);
  79
  80                 Object o = pane.getValue();
  81                 if (o == null)
  82                         return;
  83                 if (options[0].equals(o))
  84                         reply_abort = true;
  85                 timeout_dialog.dispose();
  86                 timeout_dialog = null;
  87         }
  88
  89         /*
  90          * These are required by the AltosLink implementation
  91          */
  92
  93         public boolean can_cancel_reply() {
  94                 /*
  95                  * Can cancel any replies not called from the dispatch thread
  96                  */
  97                 return !SwingUtilities.isEventDispatchThread();
  98         }
  99
 100         public boolean show_reply_timeout() {
 101                 if (!SwingUtilities.isEventDispatchThread() && frame != null) {
 102                         Runnable r = new Runnable() {
 103                                         public void run() {
 104                                                 start_timeout_dialog_internal();
 105                                         }
 106                                 };
 107                         SwingUtilities.invokeLater(r);
 108                         return true;
 109                 }
 110                 return false;
 111         }
 112
 113         public void hide_reply_timeout() {
 114                 Runnable r = new Runnable() {
 115                                 public void run() {
 116                                         timeout_dialog.setVisible(false);
 117                                 }
 118                         };
 119                 SwingUtilities.invokeLater(r);
 120         }
 121
 122         private void close_serial() {
 123                 synchronized (devices_opened) {
 124                         devices_opened.remove(device.getPath());
 125                 }
 126                 if (altos != null) {
 127                         libaltos.altos_free(altos);
 128                         altos = null;
 129                 }
 130                 abort_reply();
 131         }
 132
 133         public void close() {
 134                 if (remote) {
 135                         try {
 136                                 stop_remote();
 137                         } catch (InterruptedException ie) {
 138                         }
 139                 }
 140                 if (in_reply != 0)
 141                         System.out.printf("Uh-oh. Closing active serial device\n");
 142
 143                 close_serial();
 144
 145                 if (input_thread != null) {
 146                         try {
 147                                 input_thread.interrupt();
 148                                 input_thread.join();
 149                         } catch (InterruptedException e) {
 150                         }
 151                         input_thread = null;
 152                 }
 153                 if (debug)
 154                         System.out.printf("Closing %s\n", device.getPath());
 155         }
 156
 157         private void putc(char c) {
 158                 if (altos != null)
 159                         if (libaltos.altos_putchar(altos, c) != 0) {
 160                                 close_serial();
 161                         }
 162         }
 163
 164         public void print(String data) {
 165                 for (int i = 0; i < data.length(); i++)
 166                         putc(data.charAt(i));
 167         }
 168
 169         private void open() throws FileNotFoundException, AltosSerialInUseException {
 170                 synchronized (devices_opened) {
 171                         if (devices_opened.contains(device.getPath()))
 172                                 throw new AltosSerialInUseException(device);
 173                         devices_opened.add(device.getPath());
 174                 }
 175                 altos = device.open();
 176                 if (altos == null) {
 177                         final String    message = device.getErrorString();
 178                         close();
 179                         throw new FileNotFoundException(String.format("%s (%s)",
 180                                                                       device.toShortString(), message));
 181                 }
 182                 if (debug)
 183                         System.out.printf("Open %s\n", device.getPath());
 184                 input_thread = new Thread(this);
 185                 input_thread.start();
 186                 print("~\nE 0\n");
 187                 set_monitor(false);
 188                 flush_output();
 189         }
 190
 191         public void set_frame(Frame in_frame) {
 192                 frame = in_frame;
 193         }
 194
 195         public AltosSerial(AltosDevice in_device) throws FileNotFoundException, AltosSerialInUseException {
 196                 device = in_device;
 197                 frame = null;
 198                 serial = device.getSerial();
 199                 name = device.toShortString();
 200                 open();
 201         }
 202 }