1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*
* 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 "ao.h"
struct ao_gps_split {
uint8_t positive;
uint8_t degrees;
uint8_t minutes;
uint16_t minutes_fraction;
};
static void
ao_gps_split(int32_t v, __xdata struct ao_gps_split *split) __reentrant
{
uint32_t minutes_e7;
split->positive = 1;
if (v < 0) {
v = -v;
split->positive = 0;
}
split->degrees = v / 10000000;
minutes_e7 = (v % 10000000) * 60;
split->minutes = minutes_e7 / 10000000;
split->minutes_fraction = (minutes_e7 % 10000000) / 1000;
}
void
ao_gps_print(__xdata struct ao_gps_data *gps_data) __reentrant
{
printf("GPS %2d sat",
(gps_data->flags & AO_GPS_NUM_SAT_MASK) >> AO_GPS_NUM_SAT_SHIFT);;
if (gps_data->flags & AO_GPS_VALID) {
static __xdata struct ao_gps_split lat, lon;
ao_gps_split(gps_data->latitude, &lat);
ao_gps_split(gps_data->longitude, &lon);
printf(" %2d:%02d:%02d %2d°%02d.%04d'%c %2d°%02d.%04d'%c %5dm\n",
gps_data->hour,
gps_data->minute,
gps_data->second,
lat.degrees,
lat.minutes,
lat.minutes_fraction,
lat.positive ? 'N' : 'S',
lon.degrees,
lon.minutes,
lon.minutes_fraction,
lon.positive ? 'E' : 'W',
gps_data->altitude,
(gps_data->flags & AO_GPS_NUM_SAT_MASK) >> AO_GPS_NUM_SAT_SHIFT);
} else {
printf(" unlocked\n");
}
}
|
