57bc7b9163d9ecda3c43f3dc7f7a728b967261da
[fw/altos] / altoslib / AltosMma655x.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_11;
19
20 import java.util.concurrent.*;
21
22 public class AltosMma655x implements Cloneable {
23
24         private int     accel;
25
26         public boolean parse_line(String line) throws NumberFormatException {
27                 if (line.startsWith("MMA655X value")) {
28                         String[] items = line.split("\\s+");
29                         if (items.length >= 3) {
30                                 accel = Integer.parseInt(items[2]);
31                                 return true;
32                         }
33                 }
34                 return false;
35         }
36
37         public AltosMma655x() {
38                 accel = AltosLib.MISSING;
39         }
40
41         public AltosMma655x clone() {
42                 AltosMma655x    n = new AltosMma655x();
43
44                 n.accel = accel;
45                 return n;
46         }
47
48         static public void update_state(AltosState state, AltosLink link, AltosConfigData config_data) throws InterruptedException, AltosUnknownProduct {
49                 try {
50                         AltosMma655x    mma655x = new AltosMma655x(link);
51
52                         if (mma655x != null) {
53                                 int accel = mma655x.accel;
54                                 if (config_data.mma655x_inverted())
55                                         accel = 4095 - accel;
56                                 if (config_data.pad_orientation == 1)
57                                         accel = 4095 - accel;
58                                 state.set_accel(accel);
59                         }
60                 } catch (TimeoutException te) {
61                 } catch (NumberFormatException ne) {
62                 }
63         }
64
65         public AltosMma655x(AltosLink link) throws InterruptedException, TimeoutException, NumberFormatException {
66                 this();
67                 link.printf("A\n");
68                 for (;;) {
69                         String line = link.get_reply_no_dialog(5000);
70                         if (line == null)
71                                 throw new TimeoutException();
72                         if (parse_line(line))
73                                 break;
74                 }
75         }
76 }