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; 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 package org.altusmetrum.altoslib_4;
  19
  20 import java.io.*;
  21 import java.util.concurrent.*;
  22
  23
  24 public class AltosIdleMonitor extends Thread {
  25         AltosLink               link;
  26         AltosIdleMonitorListener        listener;
  27
  28         AltosIdleFetch          fetch;
  29
  30         boolean                 remote;
  31         double                  frequency;
  32         String                  callsign;
  33
  34         AltosListenerState      listener_state;
  35         AltosConfigData         config_data;
  36         AltosGPS                gps;
  37
  38         int AltosRSSI() throws TimeoutException, InterruptedException {
  39                 link.printf("s\n");
  40                 String line = link.get_reply_no_dialog(5000);
  41                 if (line == null)
  42                         throw new TimeoutException();
  43                 String[] items = line.split("\\s+");
  44                 if (items.length < 2)
  45                         return 0;
  46                 if (!items[0].equals("RSSI:"))
  47                         return 0;
  48                 int rssi = Integer.parseInt(items[1]);
  49                 return rssi;
  50         }
  51
  52         void start_link() throws InterruptedException, TimeoutException {
  53                 if (remote) {
  54                         link.set_radio_frequency(frequency);
  55                         link.set_callsign(callsign);
  56                         link.start_remote();
  57                 } else
  58                         link.flush_input();
  59         }
  60
  61         void stop_link() throws InterruptedException, TimeoutException {
  62                 if (remote)
  63                         link.stop_remote();
  64         }
  65
  66         void update_state(AltosState state) throws InterruptedException, TimeoutException {
  67                 boolean         worked = false;
  68
  69                 try {
  70                         start_link();
  71                         fetch.update_state(state);
  72                         worked = true;
  73                 } finally {
  74                         stop_link();
  75                         if (worked) {
  76                                 if (remote)
  77                                         state.set_rssi(link.rssi(), 0);
  78                                 listener_state.battery = link.monitor_battery();
  79                         }
  80                 }
  81         }
  82
  83         public void set_frequency(double in_frequency) {
  84                 frequency = in_frequency;
  85                 link.abort_reply();
  86         }
  87
  88         public void set_callsign(String in_callsign) {
  89                 callsign = in_callsign;
  90                 link.abort_reply();
  91         }
  92
  93         public void abort() throws InterruptedException {
  94                 while (isAlive()) {
  95                         interrupt();
  96                         link.abort_reply();
  97                         Thread.sleep(100);
  98                 }
  99                 join();
 100         }
 101
 102         public void run() {
 103                 AltosState state = new AltosState();
 104                 try {
 105                         while (!link.has_error) {
 106                                 try {
 107                                         link.config_data();
 108                                         update_state(state);
 109                                         listener.update(state, listener_state);
 110                                 } catch (TimeoutException te) {
 111                                 }
 112                                 Thread.sleep(1000);
 113                         }
 114                 } catch (InterruptedException ie) {
 115                 }
 116                 try {
 117                         link.close();
 118                 } catch (InterruptedException ie) {
 119                 }
 120         }
 121
 122         public AltosIdleMonitor(AltosIdleMonitorListener in_listener, AltosLink in_link, boolean in_remote)
 123                 throws FileNotFoundException, InterruptedException, TimeoutException {
 124                 listener = in_listener;
 125                 link = in_link;
 126                 remote = in_remote;
 127                 listener_state = new AltosListenerState();
 128                 fetch = new AltosIdleFetch(link);
 129         }
 130 }