git.gag.com Git - fw/altos/blob - aoview/aoview_monitor.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 #include "aoview.h"
  19
  20 static struct aoview_serial *monitor_serial;
  21
  22 #define MONITOR_LEN     1024
  23
  24 static char     monitor_line[MONITOR_LEN + 1];
  25 static int      monitor_pos;
  26
  27 void
  28 aoview_monitor_disconnect(void)
  29 {
  30         if (monitor_serial) {
  31                 aoview_serial_close(monitor_serial);
  32                 monitor_serial = NULL;
  33         }
  34         aoview_log_new();
  35 }
  36
  37 static void
  38 aoview_parse_string(char *target, int len, char *source)
  39 {
  40         strncpy(target, source, len-1);
  41         target[len-1] = '\0';
  42 }
  43
  44 static void
  45 aoview_parse_int(int *target, char *source)
  46 {
  47         *target = strtol(source, NULL, 0);
  48 }
  49
  50 static void
  51 aoview_parse_pos(double *target, char *source)
  52 {
  53         int     deg;
  54         double  min;
  55         char    dir;
  56         double  r;
  57
  58         if (sscanf(source, "%d°%lf'%c", &deg, &min, &dir) != 3) {
  59                 *target = 0;
  60                 return;
  61         }
  62         r = deg + min / 60.0;
  63         if (dir == 'S' || dir == 'W')
  64                 r = -r;
  65         *target = r;
  66 }
  67
  68 gboolean
  69 aoview_monitor_parse(const char *input_line)
  70 {
  71         char *saveptr;
  72         char *words[64];
  73         int nword;
  74         char line_buf[8192], *line;
  75         struct aodata   data;
  76
  77         /* avoid smashing our input parameter */
  78         strncpy (line_buf, input_line, sizeof (line_buf)-1);
  79         line_buf[sizeof(line_buf) - 1] = '\0';
  80         line = line_buf;
  81         for (nword = 0; nword < 64; nword++) {
  82                 words[nword] = strtok_r(line, " \t\n", &saveptr);
  83                 line = NULL;
  84                 if (words[nword] == NULL)
  85                         break;
  86         }
  87         if (nword < 36)
  88                 return FALSE;
  89         if (strcmp(words[0], "CALL") != 0)
  90                 return FALSE;
  91         aoview_parse_string(data.callsign, sizeof (data.callsign), words[1]);
  92         aoview_parse_int(&data.serial, words[3]);
  93
  94         aoview_parse_int(&data.rssi, words[5]);
  95         aoview_parse_string(data.state, sizeof (data.state), words[9]);
  96         aoview_parse_int(&data.tick, words[10]);
  97         aoview_parse_int(&data.accel, words[12]);
  98         aoview_parse_int(&data.pres, words[14]);
  99         aoview_parse_int(&data.temp, words[16]);
 100         aoview_parse_int(&data.batt, words[18]);
 101         aoview_parse_int(&data.drogue, words[20]);
 102         aoview_parse_int(&data.main, words[22]);
 103         aoview_parse_int(&data.flight_accel, words[24]);
 104         aoview_parse_int(&data.ground_accel, words[26]);
 105         aoview_parse_int(&data.flight_vel, words[28]);
 106         aoview_parse_int(&data.flight_pres, words[30]);
 107         aoview_parse_int(&data.ground_pres, words[32]);
 108         aoview_parse_int(&data.nsat, words[34]);
 109         if (strcmp (words[36], "unlocked") == 0) {
 110                 data.gps_connected = 1;
 111                 data.gps_locked = 0;
 112                 data.gps_time.hour = data.gps_time.minute = data.gps_time.second = 0;
 113                 data.lat = data.lon = 0;
 114                 data.alt = 0;
 115         } else if (nword >= 40) {
 116                 data.gps_locked = 1;
 117                 data.gps_connected = 1;
 118                 sscanf(words[36], "%d:%d:%d", &data.gps_time.hour, &data.gps_time.minute, &data.gps_time.second);
 119                 aoview_parse_pos(&data.lat, words[37]);
 120                 aoview_parse_pos(&data.lon, words[38]);
 121                 sscanf(words[39], "%dm", &data.alt);
 122         } else {
 123                 data.gps_connected = 0;
 124                 data.gps_locked = 0;
 125                 data.gps_time.hour = data.gps_time.minute = data.gps_time.second = 0;
 126                 data.lat = data.lon = 0;
 127                 data.alt = 0;
 128         }
 129         if (nword >= 46) {
 130                 sscanf(words[40], "%lfm/s", &data.ground_speed);
 131                 sscanf(words[41], "%d", &data.course);
 132                 sscanf(words[42], "%lfm/s", &data.climb_rate);
 133                 sscanf(words[43], "%lf", &data.hdop);
 134                 sscanf(words[44], "%d", &data.h_error);
 135                 sscanf(words[45], "%d", &data.v_error);
 136         } else {
 137                 data.ground_speed = 0;
 138                 data.course = 0;
 139                 data.climb_rate = 0;
 140                 data.hdop = 0;
 141                 data.h_error = 0;
 142                 data.v_error = 0;
 143         }
 144         aoview_state_notify(&data);
 145         return TRUE;
 146 }
 147
 148 static void
 149 aoview_monitor_callback(gpointer user_data,
 150                         struct aoview_serial *serial,
 151                         gint revents)
 152 {
 153         int     c;
 154
 155         if (revents & (G_IO_HUP|G_IO_ERR)) {
 156                 aoview_monitor_disconnect();
 157                 return;
 158         }
 159         if (revents & G_IO_IN) {
 160                 for (;;) {
 161                         c = aoview_serial_getc(serial);
 162                         if (c == -1)
 163                                 break;
 164                         if (c == '\r')
 165                                 continue;
 166                         if (c == '\n') {
 167                                 monitor_line[monitor_pos] = '\0';
 168                                 if (monitor_pos) {
 169                                         if (aoview_monitor_parse(monitor_line)) {
 170                                                 aoview_log_set_serial(aostate.data.serial);
 171                                                 if (aoview_log_get_serial())
 172                                                         aoview_log_printf ("%s\n", monitor_line);
 173                                         }
 174                                 }
 175                                 monitor_pos = 0;
 176                         } else if (monitor_pos < MONITOR_LEN)
 177                                 monitor_line[monitor_pos++] = c;
 178                 }
 179         }
 180 }
 181
 182 gboolean
 183 aoview_monitor_connect(char *tty)
 184 {
 185         aoview_monitor_disconnect();
 186         monitor_serial = aoview_serial_open(tty);
 187         if (!monitor_serial)
 188                 return FALSE;
 189         aoview_table_clear();
 190         aoview_state_reset();
 191         aoview_serial_set_callback(monitor_serial,
 192                                    aoview_monitor_callback);
 193         return TRUE;
 194 }