--- /dev/null
+/*
+ * Copyright © 2009 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "cc.h"
+#include <string.h>
+#include <stdlib.h>
+
+static void
+cc_parse_string(char *target, int len, char *source)
+{
+ strncpy(target, source, len-1);
+ target[len-1] = '\0';
+}
+
+static void
+cc_parse_int(int *target, char *source)
+{
+ *target = strtol(source, NULL, 0);
+}
+
+static void
+cc_parse_hex(int *target, char *source)
+{
+ *target = strtol(source, NULL, 16);
+}
+
+static void
+cc_parse_pos(double *target, char *source)
+{
+ int deg;
+ double min;
+ char dir;
+ double r;
+
+ if (sscanf(source, "%d°%lf'%c", °, &min, &dir) != 3) {
+ *target = 0;
+ return;
+ }
+ r = deg + min / 60.0;
+ if (dir == 'S' || dir == 'W')
+ r = -r;
+ *target = r;
+}
+
+#define PARSE_MAX_WORDS 512
+
+int
+cc_telem_parse(const char *input_line, struct cc_telem *telem)
+{
+ char *saveptr;
+ char *words[PARSE_MAX_WORDS];
+ int nword;
+ char line_buf[8192], *line;
+ int tracking_pos;
+
+ /* avoid smashing our input parameter */
+ strncpy (line_buf, input_line, sizeof (line_buf)-1);
+ line_buf[sizeof(line_buf) - 1] = '\0';
+ line = line_buf;
+ for (nword = 0; nword < PARSE_MAX_WORDS; nword++) {
+ words[nword] = strtok_r(line, " \t\n", &saveptr);
+ line = NULL;
+ if (words[nword] == NULL)
+ break;
+ }
+ if (nword < 36)
+ return FALSE;
+ if (strcmp(words[0], "CALL") != 0)
+ return FALSE;
+ cc_parse_string(telem->callsign, sizeof (telem->callsign), words[1]);
+ cc_parse_int(&telem->serial, words[3]);
+
+ cc_parse_int(&telem->rssi, words[5]);
+ cc_parse_string(telem->state, sizeof (telem->state), words[9]);
+ cc_parse_int(&telem->tick, words[10]);
+ cc_parse_int(&telem->accel, words[12]);
+ cc_parse_int(&telem->pres, words[14]);
+ cc_parse_int(&telem->temp, words[16]);
+ cc_parse_int(&telem->batt, words[18]);
+ cc_parse_int(&telem->drogue, words[20]);
+ cc_parse_int(&telem->main, words[22]);
+ cc_parse_int(&telem->flight_accel, words[24]);
+ cc_parse_int(&telem->ground_accel, words[26]);
+ cc_parse_int(&telem->flight_vel, words[28]);
+ cc_parse_int(&telem->flight_pres, words[30]);
+ cc_parse_int(&telem->ground_pres, words[32]);
+ cc_parse_int(&telem->gps.nsat, words[34]);
+ if (strcmp (words[36], "unlocked") == 0) {
+ telem->gps.gps_connected = 1;
+ telem->gps.gps_locked = 0;
+ telem->gps.gps_time.hour = telem->gps.gps_time.minute = telem->gps.gps_time.second = 0;
+ telem->gps.lat = telem->gps.lon = 0;
+ telem->gps.alt = 0;
+ tracking_pos = 37;
+ } else if (nword >= 40) {
+ telem->gps.gps_locked = 1;
+ telem->gps.gps_connected = 1;
+ sscanf(words[36], "%d:%d:%d", &telem->gps.gps_time.hour, &telem->gps.gps_time.minute, &telem->gps.gps_time.second);
+ cc_parse_pos(&telem->gps.lat, words[37]);
+ cc_parse_pos(&telem->gps.lon, words[38]);
+ sscanf(words[39], "%dm", &telem->gps.alt);
+ tracking_pos = 46;
+ } else {
+ telem->gps.gps_connected = 0;
+ telem->gps.gps_locked = 0;
+ telem->gps.gps_time.hour = telem->gps.gps_time.minute = telem->gps.gps_time.second = 0;
+ telem->gps.lat = telem->gps.lon = 0;
+ telem->gps.alt = 0;
+ tracking_pos = -1;
+ }
+ if (nword >= 46) {
+ telem->gps.gps_extended = 1;
+ sscanf(words[40], "%lfm/s", &telem->gps.ground_speed);
+ sscanf(words[41], "%d", &telem->gps.course);
+ sscanf(words[42], "%lfm/s", &telem->gps.climb_rate);
+ sscanf(words[43], "%lf", &telem->gps.hdop);
+ sscanf(words[44], "%d", &telem->gps.h_error);
+ sscanf(words[45], "%d", &telem->gps.v_error);
+ } else {
+ telem->gps.gps_extended = 0;
+ telem->gps.ground_speed = 0;
+ telem->gps.course = 0;
+ telem->gps.climb_rate = 0;
+ telem->gps.hdop = 0;
+ telem->gps.h_error = 0;
+ telem->gps.v_error = 0;
+ }
+ if (tracking_pos >= 0 && nword >= tracking_pos + 2 && strcmp(words[tracking_pos], "SAT") == 0) {
+ int c, n, pos;
+ cc_parse_int(&n, words[tracking_pos + 1]);
+ pos = tracking_pos + 2;
+ if (nword >= pos + n * 3) {
+ telem->gps_tracking.channels = n;
+ for (c = 0; c < n; c++) {
+ cc_parse_int(&telem->gps_tracking.sats[c].svid,
+ words[pos + 0]);
+ cc_parse_hex(&telem->gps_tracking.sats[c].state,
+ words[pos + 1]);
+ cc_parse_int(&telem->gps_tracking.sats[c].c_n0,
+ words[pos + 2]);
+ pos += 3;
+ }
+ } else {
+ telem->gps_tracking.channels = 0;
+ }
+ } else {
+ telem->gps_tracking.channels = 0;
+ }
+ return TRUE;
+}
projects / fw / altos / blobdiff