git.gag.com Git - fw/altos/blob - src/ao_gps_print.c

   1 /*
   2  * Copyright © 2009 Keith Packard <keithp@keithp.com>
   3  *
   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.
   7  *
   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.
  12  *
  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.
  16  */
  17
  18 #ifndef AO_GPS_TEST
  19 #include "ao.h"
  20 #endif
  21
  22 struct ao_gps_split {
  23         uint8_t positive;
  24         uint8_t degrees;
  25         uint8_t minutes;
  26         uint16_t minutes_fraction;
  27 };
  28
  29 static void
  30 ao_gps_split(int32_t v, __xdata struct ao_gps_split *split) __reentrant
  31 {
  32         uint32_t minutes_e7;
  33
  34         split->positive = 1;
  35         if (v < 0) {
  36                 v = -v;
  37                 split->positive = 0;
  38         }
  39         split->degrees = v / 10000000;
  40         minutes_e7 = (v % 10000000) * 60;
  41         split->minutes = minutes_e7 / 10000000;
  42         split->minutes_fraction = (minutes_e7 % 10000000) / 1000;
  43 }
  44
  45 void
  46 ao_gps_print(__xdata struct ao_gps_data *gps_data) __reentrant
  47 {
  48         printf("GPS %2d sat",
  49                (gps_data->flags & AO_GPS_NUM_SAT_MASK) >> AO_GPS_NUM_SAT_SHIFT);
  50         if (gps_data->flags & AO_GPS_VALID) {
  51                 static __xdata struct ao_gps_split      lat, lon;
  52                 int16_t climb, climb_int, climb_frac;
  53
  54                 ao_gps_split(gps_data->latitude, &lat);
  55                 ao_gps_split(gps_data->longitude, &lon);
  56                 printf(" %2d:%02d:%02d",
  57                        gps_data->hour,
  58                        gps_data->minute,
  59                        gps_data->second);
  60                 printf(" %2d°%02d.%04d'%c %2d°%02d.%04d'%c %5dm",
  61                        lat.degrees,
  62                        lat.minutes,
  63                        lat.minutes_fraction,
  64                        lat.positive ? 'N' : 'S',
  65                        lon.degrees,
  66                        lon.minutes,
  67                        lon.minutes_fraction,
  68                        lon.positive ? 'E' : 'W',
  69                        gps_data->altitude);
  70                 climb = gps_data->climb_rate;
  71                 if (climb >= 0) {
  72                         climb_int = climb / 100;
  73                         climb_frac = climb % 100;
  74                 } else {
  75                         climb = -climb;
  76                         climb_int = -(climb / 100);
  77                         climb_frac = climb % 100;
  78                 }
  79                 printf(" %5u.%02dm/s(H) %d° %5d.%02dm/s(V)",
  80                        gps_data->ground_speed / 100,
  81                        gps_data->ground_speed % 100,
  82                        gps_data->course * 2,
  83                        climb / 100,
  84                        climb % 100);
  85                 printf(" %d.%d(hdop) %5u(herr) %5u(verr)\n",
  86                        gps_data->hdop / 5,
  87                        (gps_data->hdop * 2) % 10,
  88                        gps_data->h_error,
  89                        gps_data->v_error);
  90         } else if (gps_data->flags & AO_GPS_RUNNING) {
  91                 printf(" unlocked\n");
  92         } else {
  93                 printf (" not-connected\n");
  94         }
  95 }