2 * Copyright © 2009 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; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
24 cc_parse_string(char *target, int len, char *source)
26 strncpy(target, source, len-1);
31 cc_parse_int(int *target, char *source)
33 *target = strtol(source, NULL, 0);
37 cc_parse_hex(int *target, char *source)
39 *target = strtol(source, NULL, 16);
43 cc_parse_pos(double *target, char *source)
50 if (sscanf(source, "%d°%lf'%c", °, &min, &dir) != 3) {
55 if (dir == 'S' || dir == 'W')
60 #define PARSE_MAX_WORDS 512
63 cc_telem_parse(const char *input_line, struct cc_telem *telem)
66 char *raw_words[PARSE_MAX_WORDS];
70 char line_buf[8192], *line;
73 /* avoid smashing our input parameter */
74 strncpy (line_buf, input_line, sizeof (line_buf)-1);
75 line_buf[sizeof(line_buf) - 1] = '\0';
77 for (nword = 0; nword < PARSE_MAX_WORDS; nword++) {
78 raw_words[nword] = strtok_r(line, " \t\n", &saveptr);
80 if (raw_words[nword] == NULL)
86 if (strcmp(words[0], "VERSION") == 0) {
87 cc_parse_int(&version, words[1]);
92 if (strcmp(words[0], "CALL") != 0)
94 cc_parse_string(telem->callsign, sizeof (telem->callsign), words[1]);
95 cc_parse_int(&telem->serial, words[3]);
98 cc_parse_int(&telem->flight, words[5]);
104 cc_parse_int(&telem->rssi, words[5]);
106 /* Older telemetry versions mis-computed the rssi value */
107 telem->rssi = (telem->rssi + 74) / 2 - 74;
109 cc_parse_string(telem->state, sizeof (telem->state), words[9]);
110 cc_parse_int(&telem->tick, words[10]);
111 cc_parse_int(&telem->accel, words[12]);
112 cc_parse_int(&telem->pres, words[14]);
113 cc_parse_int(&telem->temp, words[16]);
114 cc_parse_int(&telem->batt, words[18]);
115 cc_parse_int(&telem->drogue, words[20]);
116 cc_parse_int(&telem->main, words[22]);
117 cc_parse_int(&telem->flight_accel, words[24]);
118 cc_parse_int(&telem->ground_accel, words[26]);
119 cc_parse_int(&telem->flight_vel, words[28]);
120 cc_parse_int(&telem->flight_pres, words[30]);
121 cc_parse_int(&telem->ground_pres, words[32]);
123 cc_parse_int(&telem->accel_plus_g, words[34]);
124 cc_parse_int(&telem->accel_minus_g, words[36]);
128 telem->accel_plus_g = telem->ground_accel;
129 telem->accel_minus_g = telem->ground_accel + 530;
131 cc_parse_int(&telem->gps.nsat, words[34]);
132 if (strcmp (words[36], "unlocked") == 0) {
133 telem->gps.gps_connected = 1;
134 telem->gps.gps_locked = 0;
135 telem->gps.gps_time.year = telem->gps.gps_time.month = telem->gps.gps_time.day = 0;
136 telem->gps.gps_time.hour = telem->gps.gps_time.minute = telem->gps.gps_time.second = 0;
137 telem->gps.lat = telem->gps.lon = 0;
140 } else if (nword >= 40) {
141 telem->gps.gps_locked = 1;
142 telem->gps.gps_connected = 1;
144 sscanf(words[36], "%d-%d-%d",
145 &telem->gps.gps_time.year,
146 &telem->gps.gps_time.month,
147 &telem->gps.gps_time.day);
151 telem->gps.gps_time.year = telem->gps.gps_time.month = telem->gps.gps_time.day = 0;
153 sscanf(words[36], "%d:%d:%d", &telem->gps.gps_time.hour, &telem->gps.gps_time.minute, &telem->gps.gps_time.second);
154 cc_parse_pos(&telem->gps.lat, words[37]);
155 cc_parse_pos(&telem->gps.lon, words[38]);
156 sscanf(words[39], "%dm", &telem->gps.alt);
159 telem->gps.gps_connected = 0;
160 telem->gps.gps_locked = 0;
161 telem->gps.gps_time.year = telem->gps.gps_time.month = telem->gps.gps_time.day = 0;
162 telem->gps.gps_time.hour = telem->gps.gps_time.minute = telem->gps.gps_time.second = 0;
163 telem->gps.lat = telem->gps.lon = 0;
168 telem->gps.gps_extended = 1;
169 sscanf(words[40], "%lfm/s", &telem->gps.ground_speed);
170 sscanf(words[41], "%d", &telem->gps.course);
171 sscanf(words[42], "%lfm/s", &telem->gps.climb_rate);
172 sscanf(words[43], "%lf", &telem->gps.hdop);
173 sscanf(words[44], "%d", &telem->gps.h_error);
174 sscanf(words[45], "%d", &telem->gps.v_error);
176 telem->gps.gps_extended = 0;
177 telem->gps.ground_speed = 0;
178 telem->gps.course = 0;
179 telem->gps.climb_rate = 0;
181 telem->gps.h_error = 0;
182 telem->gps.v_error = 0;
184 if (tracking_pos >= 0 && nword >= tracking_pos + 2 && strcmp(words[tracking_pos], "SAT") == 0) {
193 cc_parse_int(&n, words[tracking_pos + 1]);
194 pos = tracking_pos + 2;
195 if (nword >= pos + n * per_sat) {
196 telem->gps_tracking.channels = n;
197 for (c = 0; c < n; c++) {
198 cc_parse_int(&telem->gps_tracking.sats[c].svid,
201 cc_parse_hex(&state, words[pos + 1]);
202 cc_parse_int(&telem->gps_tracking.sats[c].c_n0,
203 words[pos + per_sat - 1]);
207 telem->gps_tracking.channels = 0;
210 telem->gps_tracking.channels = 0;