git.gag.com Git - fw/altos/blob - altoslib/AltosIdleMonitor.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 package org.altusmetrum.altoslib_14;
  20
  21 import java.io.*;
  22 import java.util.concurrent.*;
  23
  24
  25 public class AltosIdleMonitor extends Thread {
  26         AltosLink               link;
  27         AltosIdleMonitorListener        listener;
  28
  29         AltosIdleFetch          fetch;
  30
  31         boolean                 remote;
  32         boolean                 close_on_exit;
  33         double                  frequency = AltosLib.MISSING;
  34         String                  callsign;
  35
  36         AltosState              state;
  37         AltosListenerState      listener_state;
  38         AltosConfigData         config_data;
  39         AltosGPS                gps;
  40
  41         void start_link() throws InterruptedException, TimeoutException {
  42                 if (remote) {
  43                         link.set_radio_frequency(frequency);
  44                         link.set_callsign(callsign);
  45                         link.start_remote();
  46                 } else
  47                         link.flush_input();
  48         }
  49
  50         boolean stop_link() throws InterruptedException, TimeoutException {
  51                 if (remote)
  52                         link.stop_remote();
  53                 return link.reply_abort;
  54         }
  55
  56         boolean provide_data() throws InterruptedException, TimeoutException, AltosUnknownProduct {
  57                 boolean         worked = false;
  58                 boolean         aborted = false;
  59
  60                 try {
  61                         start_link();
  62                         link.config_data();
  63                         if (state == null)
  64                                 state = new AltosState(new AltosCalData(link.config_data()));
  65                         fetch.provide_data(state);
  66                         if (frequency != AltosLib.MISSING)
  67                                 state.set_frequency(frequency);
  68                         if (!link.has_error && !link.reply_abort)
  69                                 worked = true;
  70                 } finally {
  71                         aborted = stop_link();
  72                         if (worked) {
  73                                 if (remote)
  74                                         state.set_rssi(link.rssi(), 0);
  75                                 listener_state.battery = link.monitor_battery();
  76                         }
  77                 }
  78                 return aborted;
  79         }
  80
  81         public void set_frequency(double in_frequency) {
  82                 frequency = in_frequency;
  83                 link.abort_reply();
  84         }
  85
  86         public void set_callsign(String in_callsign) {
  87                 callsign = in_callsign;
  88                 link.abort_reply();
  89         }
  90
  91         public void abort() throws InterruptedException {
  92                 while (isAlive()) {
  93                         interrupt();
  94                         link.abort_reply();
  95                         Thread.sleep(100);
  96                 }
  97                 join();
  98         }
  99
 100         public void run() {
 101                 state = null;
 102                 try {
 103                         for (;;) {
 104                                 try {
 105                                         provide_data();
 106                                         listener.update(state, listener_state);
 107                                 } catch (TimeoutException te) {
 108                                 } catch (AltosUnknownProduct ae) {
 109                                         listener.error(String.format("Unknown product \"%s\"", ae.product));
 110                                 }
 111                                 if (link.has_error || link.reply_abort) {
 112                                         listener.failed();
 113                                         break;
 114                                 }
 115                                 Thread.sleep(1000);
 116                         }
 117                 } catch (InterruptedException ie) {
 118                 }
 119                 if (close_on_exit) {
 120                         try {
 121                                 link.close();
 122                         } catch (InterruptedException ie) {
 123                         }
 124                 }
 125         }
 126
 127         public AltosIdleMonitor(AltosIdleMonitorListener in_listener, AltosLink in_link, boolean in_remote, boolean in_close_on_exit) {
 128                 listener = in_listener;
 129                 link = in_link;
 130                 remote = in_remote;
 131                 close_on_exit = in_close_on_exit;
 132                 listener_state = new AltosListenerState();
 133                 fetch = new AltosIdleFetch(link);
 134         }
 135
 136         public AltosIdleMonitor(AltosIdleMonitorListener in_listener, AltosLink in_link, boolean in_remote) {
 137                 this(in_listener, in_link, in_remote, true);
 138         }
 139 }
 140