2 * Copyright © 2010 Keith Packard <keithp@keithp.com>
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.
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.
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.
22 import java.util.HashMap;
25 * Telemetry data contents
30 * The telemetry data stream is a bit of a mess at present, with no consistent
31 * formatting. In particular, the GPS data is formatted for viewing instead of parsing.
32 * However, the key feature is that every telemetry line contains all of the information
33 * necessary to describe the current rocket state, including the calibration values
34 * for accelerometer and barometer.
38 * VERSION 2 CALL KB0G SERIAL 51 FLIGHT 2 RSSI -68 STATUS ff STATE pad 1001 \
39 * a: 16032 p: 21232 t: 20284 v: 25160 d: 204 m: 204 fa: 16038 ga: 16032 fv: 0 \
40 * fp: 21232 gp: 21230 a+: 16049 a-: 16304 GPS 0 sat unlocked SAT 1 15 30
44 * VERSION 2 CALL KB0G SERIAL 51 FLIGHT 2 RSSI -71 STATUS ff STATE pad 2504 \
45 * a: 16028 p: 21220 t: 20360 v: 25004 d: 208 m: 200 fa: 16031 ga: 16032 fv: 330 \
46 * fp: 21231 gp: 21230 a+: 16049 a-: 16304 \
47 * GPS 9 sat 2010-02-13 17:16:51 35°20.0803'N 106°45.2235'W 1790m \
48 * 0.00m/s(H) 0° 0.00m/s(V) 1.0(hdop) 0(herr) 0(verr) \
49 * SAT 10 29 30 24 28 5 25 21 20 15 33 1 23 30 24 18 26 10 29 2 26
52 public class AltosTelemetry extends AltosRecord {
53 public AltosTelemetry(String line) throws ParseException, AltosCRCException {
54 String[] words = line.split("\\s+");
57 if (words[i].equals("CRC") && words[i+1].equals("INVALID")) {
59 AltosParse.word(words[i++], "RSSI");
60 rssi = AltosParse.parse_int(words[i++]);
61 throw new AltosCRCException(rssi);
63 if (words[i].equals("CALL")) {
66 AltosParse.word (words[i++], "VERSION");
67 version = AltosParse.parse_int(words[i++]);
70 AltosParse.word (words[i++], "CALL");
71 callsign = words[i++];
73 AltosParse.word (words[i++], "SERIAL");
74 serial = AltosParse.parse_int(words[i++]);
77 AltosParse.word (words[i++], "FLIGHT");
78 flight = AltosParse.parse_int(words[i++]);
82 AltosParse.word(words[i++], "RSSI");
83 rssi = AltosParse.parse_int(words[i++]);
85 /* Older telemetry data had mis-computed RSSI value */
87 rssi = (rssi + 74) / 2 - 74;
89 AltosParse.word(words[i++], "STATUS");
90 status = AltosParse.parse_hex(words[i++]);
92 AltosParse.word(words[i++], "STATE");
93 state = Altos.state(words[i++]);
95 tick = AltosParse.parse_int(words[i++]);
97 AltosParse.word(words[i++], "a:");
98 accel = AltosParse.parse_int(words[i++]);
100 AltosParse.word(words[i++], "p:");
101 pres = AltosParse.parse_int(words[i++]);
103 AltosParse.word(words[i++], "t:");
104 temp = AltosParse.parse_int(words[i++]);
106 AltosParse.word(words[i++], "v:");
107 batt = AltosParse.parse_int(words[i++]);
109 AltosParse.word(words[i++], "d:");
110 drogue = AltosParse.parse_int(words[i++]);
112 AltosParse.word(words[i++], "m:");
113 main = AltosParse.parse_int(words[i++]);
115 AltosParse.word(words[i++], "fa:");
116 flight_accel = AltosParse.parse_int(words[i++]);
118 AltosParse.word(words[i++], "ga:");
119 ground_accel = AltosParse.parse_int(words[i++]);
121 AltosParse.word(words[i++], "fv:");
122 flight_vel = AltosParse.parse_int(words[i++]);
124 AltosParse.word(words[i++], "fp:");
125 flight_pres = AltosParse.parse_int(words[i++]);
127 AltosParse.word(words[i++], "gp:");
128 ground_pres = AltosParse.parse_int(words[i++]);
131 AltosParse.word(words[i++], "a+:");
132 accel_plus_g = AltosParse.parse_int(words[i++]);
134 AltosParse.word(words[i++], "a-:");
135 accel_minus_g = AltosParse.parse_int(words[i++]);
137 accel_plus_g = ground_accel;
138 accel_minus_g = ground_accel + 530;
141 gps = new AltosGPS(words, i, version);