8784bb810faae410d49d8140a6993622039b756f
[fw/altos] / altoslib / AltosMag.java
1 /*
2  * Copyright © 2012 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_5;
19
20 import java.util.concurrent.*;
21 import java.io.*;
22
23 public class AltosMag implements Cloneable, Serializable {
24         public int              along;
25         public int              across;
26         public int              through;
27
28         public static double counts_per_gauss = 1090;
29
30         public static double convert_gauss(double counts) {
31                 return counts / counts_per_gauss;
32         }
33
34         public boolean parse_string(String line) {
35 //              if (line.startsWith("Syntax error")) {
36 //                      along = across = through = 0;
37 //                      return true;
38 //              }
39
40                 if (!line.startsWith("X:"))
41                         return false;
42
43                 String[] items = line.split("\\s+");
44
45                 if (items.length >= 6) {
46                         along = Integer.parseInt(items[1]);
47                         across = Integer.parseInt(items[3]);
48                         through = Integer.parseInt(items[5]);
49                 }
50                 return true;
51         }
52
53         public AltosMag clone() {
54                 AltosMag n = new AltosMag();
55
56                 n.along = along;
57                 n.across = across;
58                 n.through = through;
59                 return n;
60         }
61
62         public AltosMag() {
63                 along = AltosLib.MISSING;
64                 across = AltosLib.MISSING;
65                 through = AltosLib.MISSING;
66         }
67
68         public AltosMag(int along, int across, int through) {
69                 this.along = along;
70                 this.across = across;
71                 this.through = through;
72         }
73
74         static public void update_state(AltosState state, AltosLink link, AltosConfigData config_data) throws InterruptedException {
75                 try {
76                         AltosMag        mag = new AltosMag(link);
77
78                         if (mag != null)
79                                 state.set_mag(mag);
80                 } catch (TimeoutException te) {
81                 }
82         }
83
84         public AltosMag(AltosLink link) throws InterruptedException, TimeoutException {
85                 this();
86                 link.printf("M\n");
87                 for (;;) {
88                         String line = link.get_reply_no_dialog(5000);
89                         if (line == null) {
90                                 throw new TimeoutException();
91                         }
92                         if (parse_string(line))
93                                 break;
94                 }
95         }
96 }