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.lang.*;
  25 import java.io.*;
  26 import java.util.concurrent.*;
  27 import java.util.*;
  28 import java.text.*;
  29 import java.awt.*;
  30 import java.awt.event.*;
  31 import javax.swing.*;
  32 import javax.swing.filechooser.FileNameExtensionFilter;
  33 import javax.swing.table.*;
  34 import org.altusmetrum.AltosLib.*;
  35
  36 import libaltosJNI.*;
  37
  38 /*
  39  * This class reads from the serial port and places each received
  40  * line in a queue. Dealing with that queue is left up to other
  41  * threads.
  42  */
  43
  44 public class AltosSerial extends AltosLink implements Runnable {
  45
  46         static java.util.List<String> devices_opened = Collections.synchronizedList(new LinkedList<String>());
  47
  48         AltosDevice device;
  49         SWIGTYPE_p_altos_file altos;
  50         Thread input_thread;
  51         String line;
  52         byte[] line_bytes;
  53         int line_count;
  54         Frame frame;
  55
  56         public void run () {
  57                 int c;
  58                 byte[] line_bytes = null;
  59                 int line_count = 0;
  60
  61                 try {
  62                         for (;;) {
  63                                 c = libaltos.altos_getchar(altos, 0);
  64                                 if (Thread.interrupted())
  65                                         break;
  66                                 if (c == libaltosConstants.LIBALTOS_ERROR) {
  67                                         add_telem (new AltosLine());
  68                                         add_reply (new AltosLine());
  69                                         break;
  70                                 }
  71                                 if (c == libaltosConstants.LIBALTOS_TIMEOUT)
  72                                         continue;
  73                                 if (c == '\r')
  74                                         continue;
  75                                 synchronized(this) {
  76                                         if (c == '\n') {
  77                                                 if (line_count != 0) {
  78                                                         add_bytes(line_bytes, line_count);
  79                                                         line_count = 0;
  80                                                 }
  81                                         } else {
  82                                                 if (line_bytes == null) {
  83                                                         line_bytes = new byte[256];
  84                                                 } else if (line_count == line_bytes.length) {
  85                                                         byte[] new_line_bytes = new byte[line_count * 2];
  86                                                         System.arraycopy(line_bytes, 0, new_line_bytes, 0, line_count);
  87                                                         line_bytes = new_line_bytes;
  88                                                 }
  89                                                 line_bytes[line_count] = (byte) c;
  90                                                 line_count++;
  91                                         }
  92                                 }
  93                         }
  94                 } catch (InterruptedException e) {
  95                 }
  96         }
  97
  98         public void flush_output() {
  99                 super.flush_output();
 100                 if (altos != null) {
 101                         libaltos.altos_flush(altos);
 102                 }
 103         }
 104
 105         JDialog         timeout_dialog;
 106
 107         private void start_timeout_dialog_internal() {
 108
 109                 Object[] options = { "Cancel" };
 110
 111                 JOptionPane     pane = new JOptionPane();
 112                 pane.setMessage(String.format("Connecting to %s, %7.3f MHz", device.toShortString(), frequency));
 113                 pane.setOptions(options);
 114                 pane.setInitialValue(null);
 115
 116                 timeout_dialog = pane.createDialog(frame, "Connecting...");
 117
 118                 timeout_dialog.setVisible(true);
 119
 120                 Object o = pane.getValue();
 121                 if (o == null)
 122                         return;
 123                 if (options[0].equals(o))
 124                         reply_abort = true;
 125                 timeout_dialog.dispose();
 126                 timeout_dialog = null;
 127         }
 128
 129         /*
 130          * These are required by the AltosLink implementation
 131          */
 132
 133         public boolean can_cancel_reply() {
 134                 /*
 135                  * Can cancel any replies not called from the dispatch thread
 136                  */
 137                 return !SwingUtilities.isEventDispatchThread();
 138         }
 139
 140         public boolean show_reply_timeout() {
 141                 if (!SwingUtilities.isEventDispatchThread() && frame != null) {
 142                         Runnable r = new Runnable() {
 143                                         public void run() {
 144                                                 start_timeout_dialog_internal();
 145                                         }
 146                                 };
 147                         SwingUtilities.invokeLater(r);
 148                         return true;
 149                 }
 150                 return false;
 151         }
 152
 153         public void hide_reply_timeout() {
 154                 Runnable r = new Runnable() {
 155                                 public void run() {
 156                                         timeout_dialog.setVisible(false);
 157                                 }
 158                         };
 159                 SwingUtilities.invokeLater(r);
 160         }
 161
 162         public void close() {
 163                 if (remote) {
 164                         try {
 165                                 stop_remote();
 166                         } catch (InterruptedException ie) {
 167                         }
 168                 }
 169                 if (in_reply != 0)
 170                         System.out.printf("Uh-oh. Closing active serial device\n");
 171
 172                 if (altos != null) {
 173                         libaltos.altos_close(altos);
 174                 }
 175                 if (input_thread != null) {
 176                         try {
 177                                 input_thread.interrupt();
 178                                 input_thread.join();
 179                         } catch (InterruptedException e) {
 180                         }
 181                         input_thread = null;
 182                 }
 183                 if (altos != null) {
 184                         libaltos.altos_free(altos);
 185                         altos = null;
 186                 }
 187                 synchronized (devices_opened) {
 188                         devices_opened.remove(device.getPath());
 189                 }
 190                 if (debug)
 191                         System.out.printf("Closing %s\n", device.getPath());
 192         }
 193
 194         private void putc(char c) {
 195                 if (altos != null)
 196                         libaltos.altos_putchar(altos, c);
 197         }
 198
 199         public void print(String data) {
 200                 for (int i = 0; i < data.length(); i++)
 201                         putc(data.charAt(i));
 202         }
 203
 204         private void open() throws FileNotFoundException, AltosSerialInUseException {
 205                 synchronized (devices_opened) {
 206                         if (devices_opened.contains(device.getPath()))
 207                                 throw new AltosSerialInUseException(device);
 208                         devices_opened.add(device.getPath());
 209                 }
 210                 altos = device.open();
 211                 if (altos == null) {
 212                         final String    message = device.getErrorString();
 213                         close();
 214                         throw new FileNotFoundException(String.format("%s (%s)",
 215                                                                       device.toShortString(), message));
 216                 }
 217                 if (debug)
 218                         System.out.printf("Open %s\n", device.getPath());
 219                 input_thread = new Thread(this);
 220                 input_thread.start();
 221                 print("~\nE 0\n");
 222                 set_monitor(false);
 223                 flush_output();
 224         }
 225
 226         public void set_frame(Frame in_frame) {
 227                 frame = in_frame;
 228         }
 229
 230         public AltosSerial(AltosDevice in_device) throws FileNotFoundException, AltosSerialInUseException {
 231                 device = in_device;
 232                 frame = null;
 233                 serial = device.getSerial();
 234                 name = device.toShortString();
 235                 open();
 236         }
 237 }