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   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_hex(int *target, char *source)
  52 {
  53         *target = strtol(source, NULL, 16);
  54 }
  55
  56 static void
  57 aoview_parse_pos(double *target, char *source)
  58 {
  59         int     deg;
  60         double  min;
  61         char    dir;
  62         double  r;
  63
  64         if (sscanf(source, "%d°%lf'%c", &deg, &min, &dir) != 3) {
  65                 *target = 0;
  66                 return;
  67         }
  68         r = deg + min / 60.0;
  69         if (dir == 'S' || dir == 'W')
  70                 r = -r;
  71         *target = r;
  72 }
  73
  74 #define PARSE_MAX_WORDS 256
  75
  76 gboolean
  77 aoview_monitor_parse(const char *input_line)
  78 {
  79         char *saveptr;
  80         char *words[PARSE_MAX_WORDS];
  81         int nword;
  82         char line_buf[8192], *line;
  83         struct aodata   data;
  84         int     tracking_pos;
  85         int channel;
  86
  87         /* avoid smashing our input parameter */
  88         strncpy (line_buf, input_line, sizeof (line_buf)-1);
  89         line_buf[sizeof(line_buf) - 1] = '\0';
  90         line = line_buf;
  91         for (nword = 0; nword < PARSE_MAX_WORDS; nword++) {
  92                 words[nword] = strtok_r(line, " \t\n", &saveptr);
  93                 line = NULL;
  94                 if (words[nword] == NULL)
  95                         break;
  96         }
  97         if (nword < 36)
  98                 return FALSE;
  99         if (strcmp(words[0], "CALL") != 0)
 100                 return FALSE;
 101         aoview_parse_string(data.callsign, sizeof (data.callsign), words[1]);
 102         aoview_parse_int(&data.serial, words[3]);
 103
 104         aoview_parse_int(&data.rssi, words[5]);
 105         aoview_parse_string(data.state, sizeof (data.state), words[9]);
 106         aoview_parse_int(&data.tick, words[10]);
 107         aoview_parse_int(&data.accel, words[12]);
 108         aoview_parse_int(&data.pres, words[14]);
 109         aoview_parse_int(&data.temp, words[16]);
 110         aoview_parse_int(&data.batt, words[18]);
 111         aoview_parse_int(&data.drogue, words[20]);
 112         aoview_parse_int(&data.main, words[22]);
 113         aoview_parse_int(&data.flight_accel, words[24]);
 114         aoview_parse_int(&data.ground_accel, words[26]);
 115         aoview_parse_int(&data.flight_vel, words[28]);
 116         aoview_parse_int(&data.flight_pres, words[30]);
 117         aoview_parse_int(&data.ground_pres, words[32]);
 118         aoview_parse_int(&data.gps.nsat, words[34]);
 119         if (strcmp (words[36], "unlocked") == 0) {
 120                 data.gps.gps_connected = 1;
 121                 data.gps.gps_locked = 0;
 122                 data.gps.gps_time.hour = data.gps.gps_time.minute = data.gps.gps_time.second = 0;
 123                 data.gps.lat = data.gps.lon = 0;
 124                 data.gps.alt = 0;
 125                 tracking_pos = 37;
 126         } else if (nword >= 40) {
 127                 data.gps.gps_locked = 1;
 128                 data.gps.gps_connected = 1;
 129                 sscanf(words[36], "%d:%d:%d", &data.gps.gps_time.hour, &data.gps.gps_time.minute, &data.gps.gps_time.second);
 130                 aoview_parse_pos(&data.gps.lat, words[37]);
 131                 aoview_parse_pos(&data.gps.lon, words[38]);
 132                 sscanf(words[39], "%dm", &data.gps.alt);
 133                 tracking_pos = 46;
 134         } else {
 135                 data.gps.gps_connected = 0;
 136                 data.gps.gps_locked = 0;
 137                 data.gps.gps_time.hour = data.gps.gps_time.minute = data.gps.gps_time.second = 0;
 138                 data.gps.lat = data.gps.lon = 0;
 139                 data.gps.alt = 0;
 140                 tracking_pos = -1;
 141         }
 142         if (nword >= 46) {
 143                 data.gps.gps_extended = 1;
 144                 sscanf(words[40], "%lfm/s", &data.gps.ground_speed);
 145                 sscanf(words[41], "%d", &data.gps.course);
 146                 sscanf(words[42], "%lfm/s", &data.gps.climb_rate);
 147                 sscanf(words[43], "%lf", &data.gps.hdop);
 148                 sscanf(words[44], "%d", &data.gps.h_error);
 149                 sscanf(words[45], "%d", &data.gps.v_error);
 150         } else {
 151                 data.gps.gps_extended = 0;
 152                 data.gps.ground_speed = 0;
 153                 data.gps.course = 0;
 154                 data.gps.climb_rate = 0;
 155                 data.gps.hdop = 0;
 156                 data.gps.h_error = 0;
 157                 data.gps.v_error = 0;
 158         }
 159         if (tracking_pos >= 0 && nword >= tracking_pos + 2 && strcmp(words[tracking_pos], "SAT") == 0) {
 160                 int     c, n, pos;
 161                 aoview_parse_int(&n, words[tracking_pos + 1]);
 162                 pos = tracking_pos + 2;
 163                 if (nword >= pos + n * 3) {
 164                         data.gps_tracking.channels = n;
 165                         for (c = 0; c < n; c++) {
 166                                 aoview_parse_int(&data.gps_tracking.sats[c].svid,
 167                                                  words[pos + 0]);
 168                                 aoview_parse_hex(&data.gps_tracking.sats[c].state,
 169                                                  words[pos + 1]);
 170                                 aoview_parse_int(&data.gps_tracking.sats[c].c_n0,
 171                                                  words[pos + 2]);
 172                                 pos += 3;
 173                         }
 174                 } else {
 175                         data.gps_tracking.channels = 0;
 176                 }
 177         } else {
 178                 data.gps_tracking.channels = 0;
 179         }
 180         aoview_state_notify(&data);
 181         return TRUE;
 182 }
 183
 184 static void
 185 aoview_monitor_callback(gpointer user_data,
 186                         struct aoview_serial *serial,
 187                         gint revents)
 188 {
 189         int     c;
 190
 191         if (revents & (G_IO_HUP|G_IO_ERR)) {
 192                 aoview_monitor_disconnect();
 193                 return;
 194         }
 195         if (revents & G_IO_IN) {
 196                 for (;;) {
 197                         c = aoview_serial_getc(serial);
 198                         if (c == -1)
 199                                 break;
 200                         if (c == '\r')
 201                                 continue;
 202                         if (c == '\n') {
 203                                 monitor_line[monitor_pos] = '\0';
 204                                 if (monitor_pos) {
 205                                         if (aoview_monitor_parse(monitor_line)) {
 206                                                 aoview_log_set_serial(aostate.data.serial);
 207                                                 if (aoview_log_get_serial())
 208                                                         aoview_log_printf ("%s\n", monitor_line);
 209                                         }
 210                                 }
 211                                 monitor_pos = 0;
 212                         } else if (monitor_pos < MONITOR_LEN)
 213                                 monitor_line[monitor_pos++] = c;
 214                 }
 215         }
 216 }
 217
 218 void
 219 aoview_monitor_set_channel(int channel)
 220 {
 221         if (monitor_serial)
 222                 aoview_serial_printf(monitor_serial, "c r %d\n", channel);
 223 }
 224
 225 gboolean
 226 aoview_monitor_connect(char *tty)
 227 {
 228         int     channel;
 229         aoview_monitor_disconnect();
 230         monitor_serial = aoview_serial_open(tty);
 231         if (!monitor_serial)
 232                 return FALSE;
 233         aoview_table_clear();
 234         aoview_state_reset();
 235         channel = aoview_channel_current();
 236         if (channel >= 0)
 237                 aoview_monitor_set_channel(channel);
 238         aoview_serial_set_callback(monitor_serial,
 239                                    aoview_monitor_callback);
 240         return TRUE;
 241 }