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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 *raw_words[PARSE_MAX_WORDS];
  81         char **words;
  82         int version = 0;
  83         int nword;
  84         char line_buf[8192], *line;
  85         struct aodata   data;
  86         int     tracking_pos;
  87         int channel;
  88
  89         /* avoid smashing our input parameter */
  90         strncpy (line_buf, input_line, sizeof (line_buf)-1);
  91         line_buf[sizeof(line_buf) - 1] = '\0';
  92         line = line_buf;
  93         for (nword = 0; nword < PARSE_MAX_WORDS; nword++) {
  94                 raw_words[nword] = strtok_r(line, " \t\n", &saveptr);
  95                 line = NULL;
  96                 if (raw_words[nword] == NULL)
  97                         break;
  98         }
  99         if (nword < 36)
 100                 return FALSE;
 101         words = raw_words;
 102         if (strcmp(words[0], "VERSION") == 0) {
 103                 aoview_parse_int(&version, words[1]);
 104                 words += 2;
 105                 nword -= 2;
 106         }
 107         if (strcmp(words[0], "CALL") != 0)
 108                 return FALSE;
 109         aoview_parse_string(data.callsign, sizeof (data.callsign), words[1]);
 110         aoview_parse_int(&data.serial, words[3]);
 111
 112         aoview_parse_int(&data.rssi, words[5]);
 113         aoview_parse_string(data.state, sizeof (data.state), words[9]);
 114         aoview_parse_int(&data.tick, words[10]);
 115         aoview_parse_int(&data.accel, words[12]);
 116         aoview_parse_int(&data.pres, words[14]);
 117         aoview_parse_int(&data.temp, words[16]);
 118         aoview_parse_int(&data.batt, words[18]);
 119         aoview_parse_int(&data.drogue, words[20]);
 120         aoview_parse_int(&data.main, words[22]);
 121         aoview_parse_int(&data.flight_accel, words[24]);
 122         aoview_parse_int(&data.ground_accel, words[26]);
 123         aoview_parse_int(&data.flight_vel, words[28]);
 124         aoview_parse_int(&data.flight_pres, words[30]);
 125         aoview_parse_int(&data.ground_pres, words[32]);
 126         if (version >= 1) {
 127                 aoview_parse_int(&data.accel_plus_g, words[34]);
 128                 aoview_parse_int(&data.accel_minus_g, words[36]);
 129                 words += 4;
 130                 nword -= 4;
 131         } else {
 132                 data.accel_plus_g = data.ground_accel;
 133                 data.accel_minus_g = data.ground_accel + 530;
 134         }
 135         aoview_parse_int(&data.gps.nsat, words[34]);
 136         if (strcmp (words[36], "unlocked") == 0) {
 137                 data.gps.gps_connected = 1;
 138                 data.gps.gps_locked = 0;
 139                 data.gps.gps_time.hour = data.gps.gps_time.minute = data.gps.gps_time.second = 0;
 140                 data.gps.lat = data.gps.lon = 0;
 141                 data.gps.alt = 0;
 142                 tracking_pos = 37;
 143         } else if (nword >= 40) {
 144                 data.gps.gps_locked = 1;
 145                 data.gps.gps_connected = 1;
 146                 sscanf(words[36], "%d:%d:%d", &data.gps.gps_time.hour, &data.gps.gps_time.minute, &data.gps.gps_time.second);
 147                 aoview_parse_pos(&data.gps.lat, words[37]);
 148                 aoview_parse_pos(&data.gps.lon, words[38]);
 149                 sscanf(words[39], "%dm", &data.gps.alt);
 150                 tracking_pos = 46;
 151         } else {
 152                 data.gps.gps_connected = 0;
 153                 data.gps.gps_locked = 0;
 154                 data.gps.gps_time.hour = data.gps.gps_time.minute = data.gps.gps_time.second = 0;
 155                 data.gps.lat = data.gps.lon = 0;
 156                 data.gps.alt = 0;
 157                 tracking_pos = -1;
 158         }
 159         if (nword >= 46) {
 160                 data.gps.gps_extended = 1;
 161                 sscanf(words[40], "%lfm/s", &data.gps.ground_speed);
 162                 sscanf(words[41], "%d", &data.gps.course);
 163                 sscanf(words[42], "%lfm/s", &data.gps.climb_rate);
 164                 sscanf(words[43], "%lf", &data.gps.hdop);
 165                 sscanf(words[44], "%d", &data.gps.h_error);
 166                 sscanf(words[45], "%d", &data.gps.v_error);
 167         } else {
 168                 data.gps.gps_extended = 0;
 169                 data.gps.ground_speed = 0;
 170                 data.gps.course = 0;
 171                 data.gps.climb_rate = 0;
 172                 data.gps.hdop = 0;
 173                 data.gps.h_error = 0;
 174                 data.gps.v_error = 0;
 175         }
 176         if (tracking_pos >= 0 && nword >= tracking_pos + 2 && strcmp(words[tracking_pos], "SAT") == 0) {
 177                 int     c, n, pos;
 178                 aoview_parse_int(&n, words[tracking_pos + 1]);
 179                 pos = tracking_pos + 2;
 180                 if (nword >= pos + n * 3) {
 181                         data.gps_tracking.channels = n;
 182                         for (c = 0; c < n; c++) {
 183                                 aoview_parse_int(&data.gps_tracking.sats[c].svid,
 184                                                  words[pos + 0]);
 185                                 aoview_parse_hex(&data.gps_tracking.sats[c].state,
 186                                                  words[pos + 1]);
 187                                 aoview_parse_int(&data.gps_tracking.sats[c].c_n0,
 188                                                  words[pos + 2]);
 189                                 pos += 3;
 190                         }
 191                 } else {
 192                         data.gps_tracking.channels = 0;
 193                 }
 194         } else {
 195                 data.gps_tracking.channels = 0;
 196         }
 197         aoview_state_notify(&data);
 198         return TRUE;
 199 }
 200
 201 static void
 202 aoview_monitor_callback(gpointer user_data,
 203                         struct aoview_serial *serial,
 204                         gint revents)
 205 {
 206         int     c;
 207
 208         if (revents & (G_IO_HUP|G_IO_ERR)) {
 209                 aoview_monitor_disconnect();
 210                 return;
 211         }
 212         if (revents & G_IO_IN) {
 213                 for (;;) {
 214                         c = aoview_serial_getc(serial);
 215                         if (c == -1)
 216                                 break;
 217                         if (c == '\r')
 218                                 continue;
 219                         if (c == '\n') {
 220                                 monitor_line[monitor_pos] = '\0';
 221                                 if (monitor_pos) {
 222                                         if (aoview_monitor_parse(monitor_line)) {
 223                                                 aoview_log_set_serial(aostate.data.serial);
 224                                                 if (aoview_log_get_serial())
 225                                                         aoview_log_printf ("%s\n", monitor_line);
 226                                         }
 227                                 }
 228                                 monitor_pos = 0;
 229                         } else if (monitor_pos < MONITOR_LEN)
 230                                 monitor_line[monitor_pos++] = c;
 231                 }
 232         }
 233 }
 234
 235 void
 236 aoview_monitor_set_channel(int channel)
 237 {
 238         if (monitor_serial)
 239                 aoview_serial_printf(monitor_serial, "c r %d\n", channel);
 240 }
 241
 242 gboolean
 243 aoview_monitor_connect(char *tty)
 244 {
 245         int     channel;
 246         aoview_monitor_disconnect();
 247         monitor_serial = aoview_serial_open(tty);
 248         if (!monitor_serial)
 249                 return FALSE;
 250         aoview_table_clear();
 251         aoview_state_reset();
 252         channel = aoview_channel_current();
 253         if (channel >= 0)
 254                 aoview_monitor_set_channel(channel);
 255         aoview_serial_set_callback(monitor_serial,
 256                                    aoview_monitor_callback);
 257         return TRUE;
 258 }