git.maemo.org Git - speedometer/blob - util.c

   1 /****
   2         Speedometer, shows your current speed using GPS
   3         Copyright (C) 2008 Wellu Mäkinen <wellu@wellu.org>
   4
   5         This program is free software: you can redistribute it and/or modify
   6         it under the terms of the GNU General Public License as published by
   7         the Free Software Foundation, either version 3 of the License, or
   8         (at your option) any later version.
   9
  10         This program is distributed in the hope that it will be useful,
  11         but WITHOUT ANY WARRANTY; without even the implied warranty of
  12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13         GNU General Public License for more details.
  14
  15         You should have received a copy of the GNU General Public License
  16         along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  ****/
  18
  19 #include <location/location-gps-device.h>
  20 #include <location/location-gpsd-control.h>
  21
  22 #include "util.h"
  23 #include "appdata.h"
  24 #include "callbacks.h"
  25 #include "ui.h"
  26
  27 static LocationGPSDevice *device = NULL;
  28 static LocationGPSDControl *control = NULL;
  29
  30 void start_gps(AppData* appdata) {
  31 #ifdef __arm__
  32         if(!device) {
  33                 device = g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL);
  34                 g_signal_connect(device, "changed", G_CALLBACK(location_changed), appdata);
  35         }
  36         control = location_gpsd_control_get_default();
  37         location_gpsd_control_request_status(control);
  38         if(control->can_control) {
  39                 location_gpsd_control_start(control);
  40                 }
  41 #endif // __arm__
  42 }
  43
  44 void stop_gps(AppData* appdata) {
  45 #ifdef __arm__
  46         control = location_gpsd_control_get_default();
  47         location_gpsd_control_request_status(control);
  48         if(control->can_control) {
  49                 location_gpsd_control_stop(control);
  50         }
  51 #endif // __arm__
  52 }
  53
  54 void interpret_speed_from_gps(AppData* appdata, gdouble speed) {
  55
  56         // first let's convert the number to characters
  57         gchar* c_digits = calloc(30, 1);
  58
  59         g_sprintf(c_digits, "%f", speed);
  60
  61         g_print("interpret_speed_from_gps: %s", c_digits);
  62
  63         int i = 0;
  64         while(i < 3) {
  65                 guint value = g_ascii_digit_value(c_digits[i]);
  66                 set_nth_digit(appdata, i, value);
  67                 i++;
  68         }
  69         g_free(c_digits);
  70 }
  71