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Another fremantle gps fix
1 | harbaum | 1 | /* |
2 | * Copyright (C) 2008 Till Harbaum <till@harbaum.org>. | ||
3 | * | ||
4 | * This file is part of OSM2Go. | ||
5 | * | ||
6 | * OSM2Go is free software: you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation, either version 3 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * OSM2Go is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with OSM2Go. If not, see <http://www.gnu.org/licenses/>. | ||
18 | */ | ||
19 | |||
20 | #include <stdio.h> | ||
21 | #include <string.h> | ||
22 | #include <math.h> | ||
23 | |||
24 | #include "appdata.h" | ||
25 | |||
26 | harbaum | 118 | #ifdef ENABLE_LIBLOCATION |
27 | |||
28 | #include <location/location-gps-device.h> | ||
29 | |||
30 | harbaum | 156 | gboolean gps_get_pos(appdata_t *appdata, pos_t *pos, float *alt) { |
31 | harbaum | 192 | if(!appdata->settings || !appdata->settings->enable_gps) |
32 | harbaum | 156 | return FALSE; |
33 | harbaum | 144 | |
34 | harbaum | 118 | gps_state_t *gps_state = appdata->gps_state; |
35 | |||
36 | if(!gps_state->fix) | ||
37 | harbaum | 156 | return FALSE; |
38 | harbaum | 118 | |
39 | harbaum | 156 | if(pos) { |
40 | pos->lat = gps_state->latitude; | ||
41 | pos->lon = gps_state->longitude; | ||
42 | } | ||
43 | harbaum | 118 | |
44 | harbaum | 156 | if(alt) |
45 | *alt = gps_state->altitude; | ||
46 | |||
47 | return TRUE; | ||
48 | harbaum | 118 | } |
49 | |||
50 | static void | ||
51 | location_changed(LocationGPSDevice *device, gps_state_t *gps_state) { | ||
52 | |||
53 | gps_state->fix = | ||
54 | (device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET); | ||
55 | |||
56 | if(gps_state->fix) { | ||
57 | gps_state->latitude = device->fix->latitude; | ||
58 | gps_state->longitude = device->fix->longitude; | ||
59 | } | ||
60 | harbaum | 156 | |
61 | if(device->fix->fields & LOCATION_GPS_DEVICE_ALTITUDE_SET) | ||
62 | gps_state->altitude = device->fix->altitude; | ||
63 | else | ||
64 | gps_state->altitude = NAN; | ||
65 | harbaum | 277 | |
66 | if(gps_state->cb) | ||
67 | harbaum | 280 | if(!gps_state->cb(gps_state->data)) |
68 | harbaum | 277 | gps_state->cb = NULL; |
69 | harbaum | 118 | } |
70 | |||
71 | void gps_init(appdata_t *appdata) { | ||
72 | gps_state_t *gps_state = appdata->gps_state = g_new0(gps_state_t, 1); | ||
73 | |||
74 | printf("GPS init: Using liblocation\n"); | ||
75 | |||
76 | gps_state->device = g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL); | ||
77 | if(!gps_state->device) { | ||
78 | printf("Unable to connect to liblocation\n"); | ||
79 | return; | ||
80 | } | ||
81 | |||
82 | gps_state->idd_changed = | ||
83 | g_signal_connect(gps_state->device, "changed", | ||
84 | G_CALLBACK(location_changed), gps_state); | ||
85 | |||
86 | harbaum | 253 | #ifdef LL_CONTROL_GPSD |
87 | harbaum | 118 | gps_state->control = location_gpsd_control_get_default(); |
88 | harbaum | 253 | #endif |
89 | harbaum | 118 | } |
90 | |||
91 | void gps_release(appdata_t *appdata) { | ||
92 | gps_state_t *gps_state = appdata->gps_state; | ||
93 | |||
94 | if(!gps_state->device) return; | ||
95 | |||
96 | harbaum | 253 | #ifdef LL_CONTROL_GPSD |
97 | if(gps_state->control | ||
98 | harbaum | 124 | #if MAEMO_VERSION_MAJOR < 5 |
99 | harbaum | 253 | && gps_state->control->can_control |
100 | #endif | ||
101 | ) { | ||
102 | harbaum | 118 | printf("Having control over GPSD, stopping it\n"); |
103 | harbaum | 331 | if(appdata->settings->enable_gps) |
104 | location_gpsd_control_stop(gps_state->control); | ||
105 | harbaum | 118 | } |
106 | harbaum | 124 | #endif |
107 | harbaum | 331 | |
108 | harbaum | 144 | /* Disconnect signal */ |
109 | harbaum | 118 | g_signal_handler_disconnect(gps_state->device, gps_state->idd_changed); |
110 | |||
111 | g_free(appdata->gps_state); | ||
112 | appdata->gps_state = NULL; | ||
113 | } | ||
114 | |||
115 | harbaum | 144 | void gps_enable(appdata_t *appdata, gboolean enable) { |
116 | harbaum | 329 | if(appdata->settings) { |
117 | harbaum | 331 | gps_state_t *gps_state = appdata->gps_state; |
118 | harbaum | 329 | |
119 | harbaum | 331 | if(enable != appdata->gps_state->gps_is_on) { |
120 | if(gps_state->device && gps_state->control | ||
121 | #if MAEMO_VERSION_MAJOR < 5 | ||
122 | && gps_state->control->can_control | ||
123 | #endif | ||
124 | ) { | ||
125 | if(enable) { | ||
126 | printf("starting gpsd\n"); | ||
127 | harbaum | 329 | location_gpsd_control_start(gps_state->control); |
128 | harbaum | 331 | } else { |
129 | printf("stopping gpsd\n"); | ||
130 | harbaum | 329 | location_gpsd_control_stop(gps_state->control); |
131 | harbaum | 331 | } |
132 | appdata->gps_state->gps_is_on = enable; | ||
133 | harbaum | 329 | } |
134 | } | ||
135 | harbaum | 331 | |
136 | harbaum | 192 | appdata->settings->enable_gps = enable; |
137 | harbaum | 329 | } |
138 | harbaum | 144 | } |
139 | |||
140 | harbaum | 118 | #else // ENABLE_LIBLOCATION |
141 | |||
142 | harbaum | 112 | #ifdef ENABLE_GPSBT |
143 | harbaum | 1 | #include <gpsbt.h> |
144 | #include <gpsmgr.h> | ||
145 | #include <errno.h> | ||
146 | #endif | ||
147 | |||
148 | /* maybe user configurable later on ... */ | ||
149 | #define GPSD_HOST "127.0.0.1" | ||
150 | #define GPSD_PORT 2947 | ||
151 | |||
152 | harbaum | 156 | gboolean gps_get_pos(appdata_t *appdata, pos_t *pos, float *alt) { |
153 | harbaum | 196 | pos_t tmp; |
154 | if(!pos) pos = &tmp; | ||
155 | pos->lat = NAN; | ||
156 | harbaum | 1 | |
157 | g_mutex_lock(appdata->gps_state->mutex); | ||
158 | harbaum | 156 | if(appdata->gps_state->gpsdata.set & STATUS_SET) { |
159 | if(appdata->gps_state->gpsdata.status != STATUS_NO_FIX) { | ||
160 | harbaum | 1 | if(appdata->gps_state->gpsdata.set & LATLON_SET) |
161 | harbaum | 156 | *pos = appdata->gps_state->gpsdata.fix.pos; |
162 | harbaum | 196 | if(alt && appdata->gps_state->gpsdata.set & ALTITUDE_SET) |
163 | harbaum | 156 | *alt = appdata->gps_state->gpsdata.fix.alt; |
164 | } | ||
165 | } | ||
166 | |||
167 | harbaum | 1 | g_mutex_unlock(appdata->gps_state->mutex); |
168 | harbaum | 156 | |
169 | return(!isnan(pos->lat)); | ||
170 | harbaum | 1 | } |
171 | |||
172 | static int gps_connect(gps_state_t *gps_state) { | ||
173 | GnomeVFSResult vfs_result; | ||
174 | harbaum | 112 | #ifdef ENABLE_GPSBT |
175 | harbaum | 1 | char errstr[256] = ""; |
176 | |||
177 | /* We need to start gpsd (via gpsbt) first. */ | ||
178 | memset(&gps_state->context, 0, sizeof(gpsbt_t)); | ||
179 | errno = 0; | ||
180 | |||
181 | if(gpsbt_start(NULL, 0, 0, 0, errstr, sizeof(errstr), | ||
182 | 0, &gps_state->context) < 0) { | ||
183 | printf("Error connecting to GPS receiver: (%d) %s (%s)\n", | ||
184 | errno, strerror(errno), errstr); | ||
185 | } | ||
186 | #endif | ||
187 | |||
188 | /************** from here down pure gnome/gtk/gpsd ********************/ | ||
189 | |||
190 | /* try to connect to gpsd */ | ||
191 | /* Create a socket to interact with GPSD. */ | ||
192 | |||
193 | harbaum | 156 | printf("GPSD: trying to connect to %s %d\n", GPSD_HOST, GPSD_PORT); |
194 | |||
195 | harbaum | 1 | int retries = 5; |
196 | while(retries && | ||
197 | (GNOME_VFS_OK != (vfs_result = gnome_vfs_inet_connection_create( | ||
198 | &gps_state->iconn, GPSD_HOST, GPSD_PORT, NULL)))) { | ||
199 | printf("Error creating connection to GPSD, retrying ...\n"); | ||
200 | |||
201 | retries--; | ||
202 | sleep(1); | ||
203 | } | ||
204 | |||
205 | if(!retries) { | ||
206 | printf("Finally failed ...\n"); | ||
207 | return -1; | ||
208 | } | ||
209 | |||
210 | retries = 5; | ||
211 | while(retries && ((gps_state->socket = | ||
212 | gnome_vfs_inet_connection_to_socket(gps_state->iconn)) == NULL)) { | ||
213 | printf("Error creating connecting GPSD socket, retrying ...\n"); | ||
214 | |||
215 | retries--; | ||
216 | sleep(1); | ||
217 | } | ||
218 | |||
219 | if(!retries) { | ||
220 | printf("Finally failed ...\n"); | ||
221 | gnome_vfs_inet_connection_destroy(gps_state->iconn, NULL); | ||
222 | return -1; | ||
223 | } | ||
224 | |||
225 | GTimeVal timeout = { 10, 0 }; | ||
226 | if(GNOME_VFS_OK != (vfs_result = gnome_vfs_socket_set_timeout( | ||
227 | gps_state->socket, &timeout, NULL))) { | ||
228 | printf("Error setting GPSD timeout\n"); | ||
229 | gnome_vfs_inet_connection_destroy(gps_state->iconn, NULL); | ||
230 | return -1; | ||
231 | } | ||
232 | |||
233 | printf("GPSD connected ...\n"); | ||
234 | |||
235 | return 0; | ||
236 | } | ||
237 | |||
238 | void gps_clear_fix(struct gps_fix_t *fixp) { | ||
239 | fixp->mode = MODE_NOT_SEEN; | ||
240 | fixp->pos.lat = fixp->pos.lon = NAN; | ||
241 | harbaum | 156 | fixp->alt = NAN; |
242 | harbaum | 1 | fixp->eph = NAN; |
243 | } | ||
244 | |||
245 | /* unpack a daemon response into a status structure */ | ||
246 | static void gps_unpack(char *buf, struct gps_data_t *gpsdata) { | ||
247 | char *ns, *sp, *tp; | ||
248 | |||
249 | for(ns = buf; ns; ns = strstr(ns+1, "GPSD")) { | ||
250 | if(strncmp(ns, "GPSD", 4) == 0) { | ||
251 | /* the following should execute each time we have a good next sp */ | ||
252 | for (sp = ns + 5; *sp != '\0'; sp = tp+1) { | ||
253 | tp = sp + strcspn(sp, ",\r\n"); | ||
254 | if (*tp == '\0') tp--; | ||
255 | else *tp = '\0'; | ||
256 | |||
257 | switch (*sp) { | ||
258 | case 'O': | ||
259 | if (sp[2] == '?') { | ||
260 | gpsdata->set = | ||
261 | (gpsdata->set & SATELLITE_SET) | // fix for below | ||
262 | MODE_SET | STATUS_SET; // this clears sat info?? | ||
263 | gpsdata->status = STATUS_NO_FIX; | ||
264 | gps_clear_fix(&gpsdata->fix); | ||
265 | } else { | ||
266 | struct gps_fix_t nf; | ||
267 | char tag[MAXTAGLEN+1], alt[20], eph[20], lat[20], lon[20], mode[2]; | ||
268 | int st = sscanf(sp+2, | ||
269 | "%8s %*s %*s %19s %19s " | ||
270 | "%19s %19s %*s %*s %*s %*s " | ||
271 | "%*s %*s %*s %1s", | ||
272 | tag, lat, lon, | ||
273 | alt, eph, | ||
274 | mode); | ||
275 | if (st >= 5) { | ||
276 | #define DEFAULT(val) (val[0] == '?') ? NAN : g_ascii_strtod(val, NULL) | ||
277 | nf.pos.lat = DEFAULT(lat); | ||
278 | nf.pos.lon = DEFAULT(lon); | ||
279 | nf.eph = DEFAULT(eph); | ||
280 | harbaum | 156 | nf.alt = DEFAULT(alt); |
281 | harbaum | 1 | #undef DEFAULT |
282 | if (st >= 6) | ||
283 | nf.mode = (mode[0] == '?') ? MODE_NOT_SEEN : atoi(mode); | ||
284 | else | ||
285 | nf.mode = (alt[0] == '?') ? MODE_2D : MODE_3D; | ||
286 | gpsdata->fix = nf; | ||
287 | gpsdata->set |= LATLON_SET|MODE_SET; | ||
288 | gpsdata->status = STATUS_FIX; | ||
289 | gpsdata->set |= STATUS_SET; | ||
290 | harbaum | 156 | |
291 | if(alt[0] != '?') | ||
292 | gpsdata->set |= ALTITUDE_SET; | ||
293 | harbaum | 1 | } |
294 | } | ||
295 | break; | ||
296 | } | ||
297 | } | ||
298 | } | ||
299 | } | ||
300 | } | ||
301 | |||
302 | harbaum | 144 | void gps_enable(appdata_t *appdata, gboolean enable) { |
303 | harbaum | 329 | if(appdata->settings) |
304 | harbaum | 192 | appdata->settings->enable_gps = enable; |
305 | harbaum | 144 | } |
306 | |||
307 | harbaum | 1 | gpointer gps_thread(gpointer data) { |
308 | GnomeVFSFileSize bytes_read; | ||
309 | GnomeVFSResult vfs_result; | ||
310 | char str[512]; | ||
311 | appdata_t *appdata = (appdata_t*)data; | ||
312 | |||
313 | const char *msg = "o\r\n"; /* pos request */ | ||
314 | |||
315 | appdata->gps_state->gpsdata.set = 0; | ||
316 | |||
317 | gboolean connected = FALSE; | ||
318 | |||
319 | while(1) { | ||
320 | harbaum | 193 | if(appdata->settings && appdata->settings->enable_gps) { |
321 | harbaum | 1 | if(!connected) { |
322 | printf("trying to connect\n"); | ||
323 | |||
324 | if(gps_connect(appdata->gps_state) < 0) | ||
325 | sleep(10); | ||
326 | else | ||
327 | connected = TRUE; | ||
328 | } else { | ||
329 | if(GNOME_VFS_OK == | ||
330 | (vfs_result = gnome_vfs_socket_write(appdata->gps_state->socket, | ||
331 | msg, strlen(msg)+1, &bytes_read, NULL))) { | ||
332 | |||
333 | /* update every second, wait here to make sure a complete */ | ||
334 | /* reply is received */ | ||
335 | sleep(1); | ||
336 | |||
337 | if(bytes_read == (strlen(msg)+1)) { | ||
338 | vfs_result = gnome_vfs_socket_read(appdata->gps_state->socket, | ||
339 | str, sizeof(str)-1, &bytes_read, NULL); | ||
340 | if(vfs_result == GNOME_VFS_OK) { | ||
341 | str[bytes_read] = 0; | ||
342 | |||
343 | printf("msg: %s (%d)\n", str, strlen(str)); | ||
344 | |||
345 | g_mutex_lock(appdata->gps_state->mutex); | ||
346 | |||
347 | appdata->gps_state->gpsdata.set &= | ||
348 | ~(LATLON_SET|MODE_SET|STATUS_SET); | ||
349 | |||
350 | gps_unpack(str, &appdata->gps_state->gpsdata); | ||
351 | g_mutex_unlock(appdata->gps_state->mutex); | ||
352 | } | ||
353 | } | ||
354 | } | ||
355 | } | ||
356 | } else { | ||
357 | if(connected) { | ||
358 | printf("stopping GPS connection due to user request\n"); | ||
359 | gnome_vfs_inet_connection_destroy(appdata->gps_state->iconn, NULL); | ||
360 | |||
361 | harbaum | 112 | #ifdef ENABLE_GPSBT |
362 | harbaum | 1 | gpsbt_stop(&appdata->gps_state->context); |
363 | #endif | ||
364 | connected = FALSE; | ||
365 | } else | ||
366 | sleep(1); | ||
367 | } | ||
368 | } | ||
369 | |||
370 | printf("GPS thread ended???\n"); | ||
371 | return NULL; | ||
372 | } | ||
373 | |||
374 | void gps_init(appdata_t *appdata) { | ||
375 | appdata->gps_state = g_new0(gps_state_t, 1); | ||
376 | |||
377 | harbaum | 118 | printf("GPS init: Using gpsd\n"); |
378 | |||
379 | harbaum | 1 | /* start a new thread to listen to gpsd */ |
380 | appdata->gps_state->mutex = g_mutex_new(); | ||
381 | appdata->gps_state->thread_p = | ||
382 | g_thread_create(gps_thread, appdata, FALSE, NULL); | ||
383 | } | ||
384 | |||
385 | void gps_release(appdata_t *appdata) { | ||
386 | harbaum | 112 | #ifdef ENABLE_GPSBT |
387 | harbaum | 1 | gpsbt_stop(&appdata->gps_state->context); |
388 | #endif | ||
389 | g_free(appdata->gps_state); | ||
390 | harbaum | 118 | appdata->gps_state = NULL; |
391 | harbaum | 1 | } |
392 | harbaum | 118 | |
393 | #endif // ENABLE_LIBLOCATION |