git.gag.com Git - fw/altos/blob - altosuilib/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; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 /*
  20  * Deal with TeleDongle on a serial port
  21  */
  22
  23 package org.altusmetrum.altosuilib_12;
  24
  25 import java.io.*;
  26 import java.util.*;
  27 import java.awt.*;
  28 import javax.swing.*;
  29 import org.altusmetrum.altoslib_12.*;
  30 import libaltosJNI.*;
  31
  32 /*
  33  * This class reads from the serial port and places each received
  34  * line in a queue. Dealing with that queue is left up to other
  35  * threads.
  36  */
  37
  38 public class AltosSerial extends AltosLink  {
  39
  40         static java.util.List<String> devices_opened = Collections.synchronizedList(new LinkedList<String>());
  41
  42         public AltosDevice device;
  43         SWIGTYPE_p_altos_file altos;
  44         Thread input_thread;
  45         String line;
  46         byte[] line_bytes;
  47         int line_count;
  48         Frame frame;
  49
  50         public int getchar() {
  51                 if (altos == null)
  52                         return ERROR;
  53                 return libaltos.altos_getchar(altos, 0);
  54         }
  55
  56         public void flush_output() {
  57                 super.flush_output();
  58                 if (altos != null) {
  59                         if (libaltos.altos_flush(altos) != 0)
  60                                 close_serial();
  61                 }
  62         }
  63
  64         JDialog         timeout_dialog;
  65
  66         private void start_timeout_dialog_internal() {
  67
  68                 Object[] options = { "Cancel" };
  69
  70                 JOptionPane     pane = new JOptionPane();
  71                 pane.setMessage(String.format("Connecting to %s, %7.3f MHz as %s", device.toShortString(), frequency, callsign));
  72                 pane.setOptions(options);
  73                 pane.setInitialValue(null);
  74
  75                 timeout_dialog = pane.createDialog(frame, "Connecting...");
  76
  77                 timeout_dialog.setVisible(true);
  78
  79                 Object o = pane.getValue();
  80                 if (o == null)
  81                         return;
  82                 if (options[0].equals(o))
  83                         reply_abort = true;
  84                 timeout_dialog.dispose();
  85                 timeout_dialog = null;
  86         }
  87
  88         /*
  89          * These are required by the AltosLink implementation
  90          */
  91
  92         public boolean can_cancel_reply() {
  93                 /*
  94                  * Can cancel any replies not called from the dispatch thread
  95                  */
  96                 return !SwingUtilities.isEventDispatchThread();
  97         }
  98
  99         public boolean show_reply_timeout() {
 100                 if (!SwingUtilities.isEventDispatchThread() && frame != null) {
 101                         Runnable r = new Runnable() {
 102                                         public void run() {
 103                                                 start_timeout_dialog_internal();
 104                                         }
 105                                 };
 106                         SwingUtilities.invokeLater(r);
 107                         return true;
 108                 }
 109                 return false;
 110         }
 111
 112         public void hide_reply_timeout() {
 113                 Runnable r = new Runnable() {
 114                                 public void run() {
 115                                         timeout_dialog.setVisible(false);
 116                                 }
 117                         };
 118                 SwingUtilities.invokeLater(r);
 119         }
 120
 121         private synchronized void close_serial() {
 122                 synchronized (devices_opened) {
 123                         devices_opened.remove(device.getPath());
 124                 }
 125                 if (altos != null) {
 126                         libaltos.altos_free(altos);
 127                         altos = null;
 128                 }
 129                 abort_reply();
 130         }
 131
 132         public void close() {
 133                 if (remote) {
 134                         try {
 135                                 stop_remote();
 136                         } catch (InterruptedException ie) {
 137                         }
 138                 }
 139                 if (in_reply != 0)
 140                         System.out.printf("Uh-oh. Closing active serial device\n");
 141
 142                 close_serial();
 143
 144                 if (input_thread != null) {
 145                         try {
 146                                 input_thread.interrupt();
 147                                 input_thread.join();
 148                         } catch (InterruptedException ie) {
 149                         }
 150                         input_thread = null;
 151                 }
 152                 if (debug)
 153                         System.out.printf("Closing %s\n", device.getPath());
 154         }
 155
 156         private void putc(char c) {
 157                 if (altos != null)
 158                         if (libaltos.altos_putchar(altos, c) != 0)
 159                                 close_serial();
 160         }
 161
 162         public void putchar(byte c) {
 163                 if (altos != null) {
 164                         if (debug)
 165                                 System.out.printf(" %02x", (int) c & 0xff);
 166                         if (libaltos.altos_putchar(altos, (char) c) != 0)
 167                                 close_serial();
 168                 }
 169         }
 170
 171         public void print(String data) {
 172                 for (int i = 0; i < data.length(); i++)
 173                         putc(data.charAt(i));
 174         }
 175
 176         private void open() throws FileNotFoundException, AltosSerialInUseException {
 177                 synchronized (devices_opened) {
 178                         if (devices_opened.contains(device.getPath()))
 179                                 throw new AltosSerialInUseException(device);
 180                         devices_opened.add(device.getPath());
 181                 }
 182                 altos = device.open();
 183                 if (altos == null) {
 184                         final String    message = device.getErrorString();
 185                         close();
 186                         throw new FileNotFoundException(String.format("%s (%s)",
 187                                                                       device.toShortString(), message));
 188                 }
 189                 if (debug)
 190                         System.out.printf("Open %s\n", device.getPath());
 191                 input_thread = new Thread(this);
 192                 input_thread.start();
 193                 print("~\nE 0\n");
 194                 set_monitor(false);
 195                 flush_output();
 196         }
 197
 198         public void set_frame(Frame in_frame) {
 199                 frame = in_frame;
 200         }
 201
 202         public AltosSerial(AltosDevice in_device) throws FileNotFoundException, AltosSerialInUseException {
 203                 device = in_device;
 204                 frame = null;
 205                 serial = device.getSerial();
 206                 name = device.toShortString();
 207                 open();
 208         }
 209 }