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.*;
  29 import org.altusmetrum.altosuilib.*;
  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                                 libaltos.altos_close(altos);
  62                                 altos = null;
  63                                 abort_reply();
  64                         }
  65                 }
  66         }
  67
  68         JDialog         timeout_dialog;
  69
  70         private void start_timeout_dialog_internal() {
  71
  72                 Object[] options = { "Cancel" };
  73
  74                 JOptionPane     pane = new JOptionPane();
  75                 pane.setMessage(String.format("Connecting to %s, %7.3f MHz", device.toShortString(), frequency));
  76                 pane.setOptions(options);
  77                 pane.setInitialValue(null);
  78
  79                 timeout_dialog = pane.createDialog(frame, "Connecting...");
  80
  81                 timeout_dialog.setVisible(true);
  82
  83                 Object o = pane.getValue();
  84                 if (o == null)
  85                         return;
  86                 if (options[0].equals(o))
  87                         reply_abort = true;
  88                 timeout_dialog.dispose();
  89                 timeout_dialog = null;
  90         }
  91
  92         /*
  93          * These are required by the AltosLink implementation
  94          */
  95
  96         public boolean can_cancel_reply() {
  97                 /*
  98                  * Can cancel any replies not called from the dispatch thread
  99                  */
 100                 return !SwingUtilities.isEventDispatchThread();
 101         }
 102
 103         public boolean show_reply_timeout() {
 104                 if (!SwingUtilities.isEventDispatchThread() && frame != null) {
 105                         Runnable r = new Runnable() {
 106                                         public void run() {
 107                                                 start_timeout_dialog_internal();
 108                                         }
 109                                 };
 110                         SwingUtilities.invokeLater(r);
 111                         return true;
 112                 }
 113                 return false;
 114         }
 115
 116         public void hide_reply_timeout() {
 117                 Runnable r = new Runnable() {
 118                                 public void run() {
 119                                         timeout_dialog.setVisible(false);
 120                                 }
 121                         };
 122                 SwingUtilities.invokeLater(r);
 123         }
 124
 125         public void close() {
 126                 if (remote) {
 127                         try {
 128                                 stop_remote();
 129                         } catch (InterruptedException ie) {
 130                         }
 131                 }
 132                 if (in_reply != 0)
 133                         System.out.printf("Uh-oh. Closing active serial device\n");
 134
 135                 if (altos != null) {
 136                         libaltos.altos_close(altos);
 137                 }
 138                 if (input_thread != null) {
 139                         try {
 140                                 input_thread.interrupt();
 141                                 input_thread.join();
 142                         } catch (InterruptedException e) {
 143                         }
 144                         input_thread = null;
 145                 }
 146                 if (altos != null) {
 147                         libaltos.altos_free(altos);
 148                         altos = null;
 149                 }
 150                 synchronized (devices_opened) {
 151                         devices_opened.remove(device.getPath());
 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                                 libaltos.altos_close(altos);
 161                                 altos = null;
 162                                 abort_reply();
 163                         }
 164         }
 165
 166         public void print(String data) {
 167                 for (int i = 0; i < data.length(); i++)
 168                         putc(data.charAt(i));
 169         }
 170
 171         private void open() throws FileNotFoundException, AltosSerialInUseException {
 172                 synchronized (devices_opened) {
 173                         if (devices_opened.contains(device.getPath()))
 174                                 throw new AltosSerialInUseException(device);
 175                         devices_opened.add(device.getPath());
 176                 }
 177                 altos = device.open();
 178                 if (altos == null) {
 179                         final String    message = device.getErrorString();
 180                         close();
 181                         throw new FileNotFoundException(String.format("%s (%s)",
 182                                                                       device.toShortString(), message));
 183                 }
 184                 if (debug)
 185                         System.out.printf("Open %s\n", device.getPath());
 186                 input_thread = new Thread(this);
 187                 input_thread.start();
 188                 print("~\nE 0\n");
 189                 set_monitor(false);
 190                 flush_output();
 191         }
 192
 193         public void set_frame(Frame in_frame) {
 194                 frame = in_frame;
 195         }
 196
 197         public AltosSerial(AltosDevice in_device) throws FileNotFoundException, AltosSerialInUseException {
 198                 device = in_device;
 199                 frame = null;
 200                 serial = device.getSerial();
 201                 name = device.toShortString();
 202                 open();
 203         }
 204 }