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; 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.
24 static int pad_pres_total;
25 static int pad_accel_total;
26 static double pad_lat_total;
27 static double pad_lon_total;
28 static int pad_alt_total;
31 static double prev_accel;
32 static double velocity;
33 static double pad_lat;
34 static double pad_lon;
35 static double pad_alt;
37 #define NUM_PAD_SAMPLES 50
42 aoview_great_circle (double start_lat, double start_lon,
43 double end_lat, double end_lon,
44 double *dist, double *bearing)
46 double rad = M_PI / 180;
47 double earth_radius = 6371.2;
48 double a = (90 - start_lat) * rad;
49 double b = (90 - end_lat) * rad;
50 double phi = (end_lon - start_lon) * rad;
51 double cosr = cos(a) * cos(b) + sin(a) * sin(b) * cos(phi);
52 double r = acos(cosr);
53 double rdist = earth_radius * r;
54 double sinth = sin(phi) * sin(b) / sin(r);
55 double th = asin(sinth) / rad;
61 aoview_state_notify(struct aostate *state)
65 double velocity_change;
71 double drogue_sense, main_sense;
73 if (!strcmp(state->state, "pad")) {
74 if (npad < NUM_PAD_SAMPLES) {
75 pad_accel_total += state->accel;
76 pad_pres_total += state->pres;
77 pad_lat_total += state->lat;
78 pad_lon_total += state->lon;
79 pad_alt_total += state->alt;
83 if (npad <= NUM_PAD_SAMPLES) {
84 pad_pres = pad_pres_total / npad;
85 pad_accel = pad_accel_total / npad;
86 pad_lat = pad_lat_total / npad;
87 pad_lon = pad_lon_total / npad;
88 pad_alt = pad_alt_total / npad;
91 altitude = aoview_pres_to_altitude(state->pres) - aoview_pres_to_altitude(pad_pres);
92 accel = (pad_accel - state->accel) / 264.8 * 9.80665;
93 velocity_change = (accel + prev_accel) / 2.0;
94 ticks = state->tick - prev_tick;
95 velocity -= velocity_change * (ticks / 100.0);
96 temp = ((state->temp / 32767.0 * 3.3) - 0.5) / 0.01;
97 battery = (state->batt / 32767.0 * 5.0);
98 drogue_sense = (state->drogue / 32767.0 * 15.0);
99 main_sense = (state->main / 32767.0 * 15.0);
102 prev_tick = state->tick;
103 aoview_table_start();
104 aoview_table_add_row("RSSI", "%ddB", state->rssi);
105 aoview_table_add_row("Height", "%dm", altitude);
106 aoview_table_add_row("Acceleration", "%gm/s²", accel);
107 aoview_table_add_row("Velocity", "%gm/s", velocity);
108 aoview_table_add_row("Temperature", "%g°C", temp);
109 aoview_table_add_row("Battery", "%gV", battery);
110 aoview_table_add_row("Drogue", "%gV", drogue_sense);
111 aoview_table_add_row("Main", "%gV", main_sense);
112 aoview_table_add_row("Pad altitude", "%dm", aoview_pres_to_altitude(pad_pres));
113 aoview_table_add_row("Satellites", "%d", state->nsat);
115 aoview_table_add_row("Lat", "%g", state->lat);
116 aoview_table_add_row("Lon", "%g", state->lon);
117 aoview_table_add_row("GPS alt", "%d", state->alt);
118 aoview_table_add_row("GPS time", "%02d:%02d:%02d",
119 state->gps_time.hour,
120 state->gps_time.minute,
121 state->gps_time.second);
122 aoview_great_circle(pad_lat, pad_lon, state->lat, state->lon,
124 aoview_table_add_row("Course", "%gkm %g°", dist, bearing);
126 aoview_table_add_row("GPS", "unlocked");
128 aoview_table_finish();
132 aoview_state_init(GladeXML *xml)