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   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;
  19
  20 import java.lang.*;
  21 import java.text.*;
  22 import java.io.*;
  23 import java.util.concurrent.*;
  24
  25 class AltosTelemetryReader extends AltosFlightReader {
  26         AltosDevice     device;
  27         AltosSerial     serial;
  28         AltosLog        log;
  29         AltosRecord     previous;
  30         double          frequency;
  31         int             telemetry;
  32
  33         LinkedBlockingQueue<AltosLine> telem;
  34
  35         AltosRecord read() throws InterruptedException, ParseException, AltosCRCException, IOException {
  36                 AltosLine l = telem.take();
  37                 if (l.line == null)
  38                         throw new IOException("IO error");
  39                 AltosRecord     next = AltosTelemetry.parse(l.line, previous);
  40                 previous = next;
  41                 return next;
  42         }
  43
  44         void flush() {
  45                 telem.clear();
  46         }
  47
  48         void close(boolean interrupted) {
  49                 serial.remove_monitor(telem);
  50                 log.close();
  51                 serial.close();
  52         }
  53
  54         public void set_frequency(double in_frequency) throws InterruptedException, TimeoutException {
  55                 frequency = in_frequency;
  56                 serial.set_radio_frequency(frequency);
  57         }
  58
  59         public boolean supports_telemetry(int telemetry) {
  60
  61                 try {
  62                         /* Version 1.0 or later firmware supports all telemetry formats */
  63                         if (serial.config_data().compare_version("1.0") >= 0)
  64                                 return true;
  65
  66                         /* Version 0.9 firmware only supports 0.9 telemetry */
  67                         if (serial.config_data().compare_version("0.9") >= 0) {
  68                                 if (telemetry == Altos.ao_telemetry_0_9)
  69                                         return true;
  70                                 else
  71                                         return false;
  72                         }
  73
  74                         /* Version 0.8 firmware only supports 0.8 telemetry */
  75                         if (telemetry == Altos.ao_telemetry_0_8)
  76                                 return true;
  77                         else
  78                                 return false;
  79                 } catch (InterruptedException ie) {
  80                         return true;
  81                 } catch (TimeoutException te) {
  82                         return true;
  83                 }
  84         }
  85
  86         void save_frequency() {
  87                 AltosUIPreferences.set_frequency(device.getSerial(), frequency);
  88         }
  89
  90         void set_telemetry(int in_telemetry) {
  91                 telemetry = in_telemetry;
  92                 serial.set_telemetry(telemetry);
  93         }
  94
  95         void save_telemetry() {
  96                 AltosUIPreferences.set_telemetry(device.getSerial(), telemetry);
  97         }
  98
  99         File backing_file() {
 100                 return log.file();
 101         }
 102
 103         public AltosTelemetryReader (AltosDevice in_device)
 104                 throws FileNotFoundException, AltosSerialInUseException, IOException, InterruptedException, TimeoutException {
 105                 device = in_device;
 106                 serial = new AltosSerial(device);
 107                 log = new AltosLog(serial);
 108                 name = device.toShortString();
 109                 previous = null;
 110
 111                 telem = new LinkedBlockingQueue<AltosLine>();
 112                 frequency = AltosUIPreferences.frequency(device.getSerial());
 113                 set_frequency(frequency);
 114                 telemetry = AltosUIPreferences.telemetry(device.getSerial());
 115                 set_telemetry(telemetry);
 116                 serial.set_callsign(AltosUIPreferences.callsign());
 117                 serial.add_monitor(telem);
 118         }
 119 }