X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=ao-tools%2Flib%2Fcc-telem.c;fp=ao-tools%2Flib%2Fcc-telem.c;h=a6ac0313b03f173c49cf75859e0b05c9f3740f1b;hb=c46e832b28820d7c5be4efaacbbd7c0607927fe5;hp=0000000000000000000000000000000000000000;hpb=26f56b51bd11aa91f1d77b81827b49c28cb6ec5f;p=fw%2Faltos

diff --git a/ao-tools/lib/cc-telem.c b/ao-tools/lib/cc-telem.c
new file mode 100644
index 00000000..a6ac0313
--- /dev/null
+++ b/ao-tools/lib/cc-telem.c
@@ -0,0 +1,164 @@
+/*
+ * 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", &deg, &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;
+}