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a1bb33af | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
a1bb33af | 3 | * |
13d8e03c | 4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> |
a1bb33af UH |
5 | * |
6 | * This program 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 | * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
6ec6c43b | 20 | #include <config.h> |
a1bb33af UH |
21 | #include <stdio.h> |
22 | #include <glib.h> | |
c1aae900 | 23 | #include <libsigrok/libsigrok.h> |
45c59c8b | 24 | #include "libsigrok-internal.h" |
a1bb33af | 25 | |
2ad1deb8 | 26 | /** @cond PRIVATE */ |
3544f848 | 27 | #define LOG_PREFIX "device" |
2ad1deb8 | 28 | /** @endcond */ |
a885ce3e | 29 | |
393fb9cb UH |
30 | /** |
31 | * @file | |
32 | * | |
33 | * Device handling in libsigrok. | |
34 | */ | |
35 | ||
7b870c38 UH |
36 | /** |
37 | * @defgroup grp_devices Devices | |
38 | * | |
39 | * Device handling in libsigrok. | |
40 | * | |
41 | * @{ | |
42 | */ | |
43 | ||
04cb9157 | 44 | /** @private |
5e23fcab ML |
45 | * Allocate and initialize new struct sr_channel and add to sdi. |
46 | * @param[in] sdi The device instance the channel is connected to. | |
91aea754 UH |
47 | * @param[in] index @copydoc sr_channel::index |
48 | * @param[in] type @copydoc sr_channel::type | |
49 | * @param[in] enabled @copydoc sr_channel::enabled | |
50 | * @param[in] name @copydoc sr_channel::name | |
04cb9157 | 51 | * |
c368e6f3 | 52 | * @return A new struct sr_channel*. |
04cb9157 | 53 | */ |
5e23fcab ML |
54 | SR_PRIV struct sr_channel *sr_channel_new(struct sr_dev_inst *sdi, |
55 | int index, int type, gboolean enabled, const char *name) | |
48a486cd | 56 | { |
ba7dd8bb | 57 | struct sr_channel *ch; |
48a486cd | 58 | |
c368e6f3 | 59 | ch = g_malloc0(sizeof(struct sr_channel)); |
837b0866 | 60 | ch->sdi = sdi; |
ba7dd8bb UH |
61 | ch->index = index; |
62 | ch->type = type; | |
63 | ch->enabled = enabled; | |
48a486cd | 64 | if (name) |
ba7dd8bb | 65 | ch->name = g_strdup(name); |
48a486cd | 66 | |
5e23fcab ML |
67 | sdi->channels = g_slist_append(sdi->channels, ch); |
68 | ||
ba7dd8bb | 69 | return ch; |
48a486cd BV |
70 | } |
71 | ||
94799bc4 | 72 | /** |
6f1346fb | 73 | * Set the name of the specified channel. |
94799bc4 | 74 | * |
ba7dd8bb | 75 | * If the channel already has a different name assigned to it, it will be |
94799bc4 UH |
76 | * removed, and the new name will be saved instead. |
77 | * | |
6f1346fb ML |
78 | * @param[in] channel The channel whose name to set. |
79 | * @param[in] name The new name that the specified channel should get. A | |
80 | * copy of the string is made. | |
0e3b1439 | 81 | * |
37e8b4c4 | 82 | * @return SR_OK on success, or SR_ERR_ARG on invalid arguments. |
9fb5f2df | 83 | * |
47117241 | 84 | * @since 0.3.0 |
94799bc4 | 85 | */ |
6f1346fb ML |
86 | SR_API int sr_dev_channel_name_set(struct sr_channel *channel, |
87 | const char *name) | |
a1bb33af | 88 | { |
6f1346fb ML |
89 | if (!channel) { |
90 | sr_err("%s: channel was NULL", __func__); | |
0e3b1439 | 91 | return SR_ERR_ARG; |
94799bc4 UH |
92 | } |
93 | ||
6f1346fb ML |
94 | g_free(channel->name); |
95 | channel->name = g_strdup(name); | |
96 | return SR_OK; | |
a1bb33af UH |
97 | } |
98 | ||
be5bf44d | 99 | /** |
6f1346fb | 100 | * Enable or disable a channel. |
be5bf44d | 101 | * |
6f1346fb ML |
102 | * @param[in] channel The channel to enable or disable. |
103 | * @param[in] state TRUE to enable the channel, FALSE to disable. | |
be5bf44d | 104 | * |
2a854d71 | 105 | * @return SR_OK on success or SR_ERR on failure. In case of invalid |
ba7dd8bb | 106 | * arguments, SR_ERR_ARG is returned and the channel enabled state |
2a854d71 | 107 | * remains unchanged. |
9fb5f2df | 108 | * |
47117241 | 109 | * @since 0.3.0 |
be5bf44d | 110 | */ |
6f1346fb | 111 | SR_API int sr_dev_channel_enable(struct sr_channel *channel, |
be5bf44d BV |
112 | gboolean state) |
113 | { | |
be5bf44d | 114 | int ret; |
2a854d71 | 115 | gboolean was_enabled; |
6f1346fb | 116 | struct sr_dev_inst *sdi; |
be5bf44d | 117 | |
6f1346fb | 118 | if (!channel) |
be5bf44d BV |
119 | return SR_ERR_ARG; |
120 | ||
6f1346fb ML |
121 | sdi = channel->sdi; |
122 | was_enabled = channel->enabled; | |
123 | channel->enabled = state; | |
124 | if (!state != !was_enabled && sdi->driver | |
125 | && sdi->driver->config_channel_set) { | |
126 | ret = sdi->driver->config_channel_set( | |
127 | sdi, channel, SR_CHANNEL_SET_ENABLED); | |
128 | /* Roll back change if it wasn't applicable. */ | |
129 | if (ret != SR_OK) | |
130 | return ret; | |
be5bf44d BV |
131 | } |
132 | ||
6f1346fb | 133 | return SR_OK; |
be5bf44d BV |
134 | } |
135 | ||
9c24d16a BV |
136 | /* Returns the next enabled channel, wrapping around if necessary. */ |
137 | SR_PRIV struct sr_channel *sr_next_enabled_channel(const struct sr_dev_inst *sdi, | |
138 | struct sr_channel *cur_channel) | |
139 | { | |
140 | struct sr_channel *next_channel; | |
141 | GSList *l; | |
142 | ||
143 | next_channel = cur_channel; | |
144 | do { | |
145 | l = g_slist_find(sdi->channels, next_channel); | |
146 | if (l && l->next) | |
147 | next_channel = l->next->data; | |
148 | else | |
149 | next_channel = sdi->channels->data; | |
150 | } while (!next_channel->enabled); | |
151 | ||
152 | return next_channel; | |
153 | } | |
154 | ||
94799bc4 | 155 | /** |
9c5332d2 UH |
156 | * Determine whether the specified device instance has the specified |
157 | * capability. | |
94799bc4 | 158 | * |
9c5332d2 | 159 | * @param sdi Pointer to the device instance to be checked. Must not be NULL. |
8ec95d22 UH |
160 | * If the device's 'driver' field is NULL (virtual device), this |
161 | * function will always return FALSE (virtual devices don't have | |
162 | * a hardware capabilities list). | |
04cb9157 | 163 | * @param[in] key The option that should be checked for is supported by the |
4d15e5c9 | 164 | * specified device. |
94799bc4 | 165 | * |
04cb9157 MH |
166 | * @retval TRUE Device has the specified option |
167 | * @retval FALSE Device does not have the specified option, invalid input | |
168 | * parameters or other error conditions. | |
9fb5f2df | 169 | * |
53f05fa8 | 170 | * @since 0.2.0 |
94799bc4 | 171 | */ |
4d15e5c9 | 172 | SR_API gboolean sr_dev_has_option(const struct sr_dev_inst *sdi, int key) |
7d658874 | 173 | { |
003595ac | 174 | GVariant *gvar; |
4d15e5c9 | 175 | const int *devopts; |
003595ac BV |
176 | gsize num_opts, i; |
177 | int ret; | |
7d658874 | 178 | |
003595ac | 179 | if (!sdi || !sdi->driver || !sdi->driver->config_list) |
8ec95d22 | 180 | return FALSE; |
94799bc4 | 181 | |
8f996b89 | 182 | if (sdi->driver->config_list(SR_CONF_DEVICE_OPTIONS, |
92b68bb5 | 183 | &gvar, sdi, NULL) != SR_OK) |
8ec95d22 | 184 | return FALSE; |
94799bc4 | 185 | |
003595ac BV |
186 | ret = FALSE; |
187 | devopts = g_variant_get_fixed_array(gvar, &num_opts, sizeof(int32_t)); | |
188 | for (i = 0; i < num_opts; i++) { | |
d099d880 | 189 | if ((devopts[i] & SR_CONF_MASK) == key) { |
003595ac BV |
190 | ret = TRUE; |
191 | break; | |
192 | } | |
94799bc4 | 193 | } |
003595ac | 194 | g_variant_unref(gvar); |
218557b8 | 195 | |
003595ac | 196 | return ret; |
a1bb33af | 197 | } |
fd9836bf | 198 | |
e705ce3b UH |
199 | /** |
200 | * Allocate and init a new user-generated device instance. | |
aac29cc1 UH |
201 | * |
202 | * @param vendor Device vendor | |
203 | * @param model Device model | |
204 | * @param version Device version | |
205 | * | |
206 | * @retval struct sr_dev_inst *. Dynamically allocated, free using | |
207 | * sr_dev_inst_free(). | |
e705ce3b UH |
208 | */ |
209 | SR_API struct sr_dev_inst *sr_dev_inst_user_new(const char *vendor, | |
210 | const char *model, const char *version) | |
211 | { | |
212 | struct sr_dev_inst *sdi; | |
213 | ||
aac29cc1 UH |
214 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
215 | ||
0af636be UH |
216 | sdi->vendor = g_strdup(vendor); |
217 | sdi->model = g_strdup(model); | |
218 | sdi->version = g_strdup(version); | |
e705ce3b UH |
219 | sdi->inst_type = SR_INST_USER; |
220 | ||
221 | return sdi; | |
222 | } | |
223 | ||
224 | /** | |
225 | * Add a new channel to the specified device instance. | |
226 | */ | |
227 | SR_API int sr_dev_inst_channel_add(struct sr_dev_inst *sdi, int index, int type, const char *name) | |
228 | { | |
e705ce3b UH |
229 | if (!sdi || sdi->inst_type != SR_INST_USER || index < 0) |
230 | return SR_ERR_ARG; | |
231 | ||
5e23fcab | 232 | sr_channel_new(sdi, index, type, TRUE, name); |
e705ce3b UH |
233 | |
234 | return SR_OK; | |
235 | } | |
236 | ||
04cb9157 MH |
237 | /** @private |
238 | * Free device instance struct created by sr_dev_inst(). | |
7aebe22d | 239 | * @param sdi device instance to free. |
04cb9157 | 240 | */ |
48a486cd BV |
241 | SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi) |
242 | { | |
ba7dd8bb | 243 | struct sr_channel *ch; |
b1b1944e | 244 | struct sr_channel_group *cg; |
d3cff734 BV |
245 | GSList *l; |
246 | ||
ba7dd8bb UH |
247 | for (l = sdi->channels; l; l = l->next) { |
248 | ch = l->data; | |
249 | g_free(ch->name); | |
379d2609 | 250 | g_free(ch->priv); |
ba7dd8bb | 251 | g_free(ch); |
d3cff734 | 252 | } |
ba7dd8bb | 253 | g_slist_free(sdi->channels); |
d3cff734 | 254 | |
b1b1944e BV |
255 | for (l = sdi->channel_groups; l; l = l->next) { |
256 | cg = l->data; | |
7aebe22d BV |
257 | g_free(cg->name); |
258 | g_slist_free(cg->channels); | |
b1b1944e | 259 | g_free(cg->priv); |
7aebe22d | 260 | g_free(cg); |
b1b1944e BV |
261 | } |
262 | g_slist_free(sdi->channel_groups); | |
90c7f4e9 | 263 | |
fe7b8efc SB |
264 | if (sdi->session) |
265 | sr_session_dev_remove(sdi->session, sdi); | |
266 | ||
48a486cd BV |
267 | g_free(sdi->vendor); |
268 | g_free(sdi->model); | |
269 | g_free(sdi->version); | |
2fe6210a SA |
270 | g_free(sdi->serial_num); |
271 | g_free(sdi->connection_id); | |
48a486cd BV |
272 | g_free(sdi); |
273 | } | |
274 | ||
275 | #ifdef HAVE_LIBUSB_1_0 | |
276 | ||
04cb9157 MH |
277 | /** @private |
278 | * Allocate and init struct for USB device instance. | |
2eb84c98 UH |
279 | * @param[in] bus @copydoc sr_usb_dev_inst::bus |
280 | * @param[in] address @copydoc sr_usb_dev_inst::address | |
281 | * @param[in] hdl @copydoc sr_usb_dev_inst::devhdl | |
04cb9157 | 282 | * |
2eb84c98 | 283 | * @retval other struct sr_usb_dev_inst * for USB device instance. |
04cb9157 | 284 | */ |
48a486cd BV |
285 | SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus, |
286 | uint8_t address, struct libusb_device_handle *hdl) | |
287 | { | |
288 | struct sr_usb_dev_inst *udi; | |
289 | ||
91219afc | 290 | udi = g_malloc0(sizeof(struct sr_usb_dev_inst)); |
48a486cd BV |
291 | udi->bus = bus; |
292 | udi->address = address; | |
293 | udi->devhdl = hdl; | |
294 | ||
295 | return udi; | |
296 | } | |
297 | ||
04cb9157 MH |
298 | /** @private |
299 | * Free struct * allocated by sr_usb_dev_inst(). | |
2eb84c98 | 300 | * @param usb struct* to free. Must not be NULL. |
04cb9157 | 301 | */ |
48a486cd BV |
302 | SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb) |
303 | { | |
a006798b | 304 | g_free(usb); |
48a486cd BV |
305 | } |
306 | ||
307 | #endif | |
308 | ||
c4f2dfd0 UH |
309 | #ifdef HAVE_LIBSERIALPORT |
310 | ||
9fb5f2df UH |
311 | /** |
312 | * @private | |
299bdb24 BV |
313 | * |
314 | * Both parameters are copied to newly allocated strings, and freed | |
315 | * automatically by sr_serial_dev_inst_free(). | |
9fb5f2df | 316 | * |
04cb9157 | 317 | * @param[in] port OS-specific serial port specification. Examples: |
9fb5f2df | 318 | * "/dev/ttyUSB0", "/dev/ttyACM1", "/dev/tty.Modem-0", "COM1". |
91219afc | 319 | * Must not be NULL. |
04cb9157 MH |
320 | * @param[in] serialcomm A serial communication parameters string, in the form |
321 | * of \<speed\>/\<data bits\>\<parity\>\<stopbits\>, for example | |
322 | * "9600/8n1" or "600/7o2". This is an optional parameter; | |
91219afc | 323 | * it may be filled in later. Can be NULL. |
9fb5f2df UH |
324 | * |
325 | * @return A pointer to a newly initialized struct sr_serial_dev_inst, | |
326 | * or NULL on error. | |
299bdb24 | 327 | */ |
48a486cd | 328 | SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port, |
299bdb24 | 329 | const char *serialcomm) |
48a486cd BV |
330 | { |
331 | struct sr_serial_dev_inst *serial; | |
332 | ||
91219afc | 333 | serial = g_malloc0(sizeof(struct sr_serial_dev_inst)); |
48a486cd | 334 | serial->port = g_strdup(port); |
299bdb24 BV |
335 | if (serialcomm) |
336 | serial->serialcomm = g_strdup(serialcomm); | |
48a486cd BV |
337 | |
338 | return serial; | |
339 | } | |
340 | ||
04cb9157 MH |
341 | /** @private |
342 | * Free struct sr_serial_dev_inst * allocated by sr_serial_dev_inst(). | |
2eb84c98 | 343 | * @param serial struct sr_serial_dev_inst * to free. Must not be NULL. |
04cb9157 | 344 | */ |
48a486cd BV |
345 | SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial) |
346 | { | |
347 | g_free(serial->port); | |
299bdb24 | 348 | g_free(serial->serialcomm); |
acac8fc3 | 349 | g_free(serial); |
48a486cd | 350 | } |
c4f2dfd0 UH |
351 | #endif |
352 | ||
df823ac4 | 353 | /** @private */ |
ae67644f ML |
354 | SR_PRIV struct sr_usbtmc_dev_inst *sr_usbtmc_dev_inst_new(const char *device) |
355 | { | |
356 | struct sr_usbtmc_dev_inst *usbtmc; | |
357 | ||
91219afc | 358 | usbtmc = g_malloc0(sizeof(struct sr_usbtmc_dev_inst)); |
ae67644f ML |
359 | usbtmc->device = g_strdup(device); |
360 | usbtmc->fd = -1; | |
361 | ||
362 | return usbtmc; | |
363 | } | |
364 | ||
df823ac4 | 365 | /** @private */ |
ae67644f ML |
366 | SR_PRIV void sr_usbtmc_dev_inst_free(struct sr_usbtmc_dev_inst *usbtmc) |
367 | { | |
368 | g_free(usbtmc->device); | |
369 | g_free(usbtmc); | |
370 | } | |
371 | ||
576ff5b0 UH |
372 | /** |
373 | * Get the list of devices/instances of the specified driver. | |
374 | * | |
375 | * @param driver The driver to use. Must not be NULL. | |
376 | * | |
377 | * @return The list of devices/instances of this driver, or NULL upon errors | |
378 | * or if the list is empty. | |
379 | * | |
53f05fa8 | 380 | * @since 0.2.0 |
576ff5b0 | 381 | */ |
f99e32af | 382 | SR_API GSList *sr_dev_list(const struct sr_dev_driver *driver) |
811deee4 | 383 | { |
811deee4 | 384 | if (driver && driver->dev_list) |
4f840ce9 | 385 | return driver->dev_list(driver); |
811deee4 BV |
386 | else |
387 | return NULL; | |
388 | } | |
389 | ||
576ff5b0 | 390 | /** |
8102cee4 | 391 | * Clear the list of device instances a driver knows about. |
576ff5b0 | 392 | * |
8102cee4 BV |
393 | * @param driver The driver to use. This must be a pointer to one of |
394 | * the entries returned by sr_driver_list(). Must not be NULL. | |
576ff5b0 | 395 | * |
8102cee4 BV |
396 | * @retval SR_OK Success |
397 | * @retval SR_ERR_ARG Invalid driver | |
576ff5b0 UH |
398 | * |
399 | * @since 0.2.0 | |
400 | */ | |
f99e32af | 401 | SR_API int sr_dev_clear(const struct sr_dev_driver *driver) |
811deee4 | 402 | { |
8102cee4 BV |
403 | int ret; |
404 | ||
405 | if (!driver) { | |
406 | sr_err("Invalid driver."); | |
407 | return SR_ERR_ARG; | |
408 | } | |
409 | ||
410 | if (driver->dev_clear) | |
4f840ce9 | 411 | ret = driver->dev_clear(driver); |
811deee4 | 412 | else |
8102cee4 BV |
413 | ret = std_dev_clear(driver, NULL); |
414 | ||
415 | return ret; | |
811deee4 BV |
416 | } |
417 | ||
576ff5b0 UH |
418 | /** |
419 | * Open the specified device. | |
420 | * | |
421 | * @param sdi Device instance to use. Must not be NULL. | |
422 | * | |
423 | * @return SR_OK upon success, a negative error code upon errors. | |
424 | * | |
425 | * @since 0.2.0 | |
426 | */ | |
efdecf4c BV |
427 | SR_API int sr_dev_open(struct sr_dev_inst *sdi) |
428 | { | |
429 | int ret; | |
430 | ||
431 | if (!sdi || !sdi->driver || !sdi->driver->dev_open) | |
432 | return SR_ERR; | |
433 | ||
434 | ret = sdi->driver->dev_open(sdi); | |
435 | ||
436 | return ret; | |
437 | } | |
438 | ||
576ff5b0 UH |
439 | /** |
440 | * Close the specified device. | |
441 | * | |
442 | * @param sdi Device instance to use. Must not be NULL. | |
443 | * | |
444 | * @return SR_OK upon success, a negative error code upon errors. | |
445 | * | |
446 | * @since 0.2.0 | |
447 | */ | |
efdecf4c BV |
448 | SR_API int sr_dev_close(struct sr_dev_inst *sdi) |
449 | { | |
450 | int ret; | |
451 | ||
452 | if (!sdi || !sdi->driver || !sdi->driver->dev_close) | |
453 | return SR_ERR; | |
454 | ||
455 | ret = sdi->driver->dev_close(sdi); | |
456 | ||
457 | return ret; | |
458 | } | |
459 | ||
0157fdce SA |
460 | /** |
461 | * Queries a device instances' driver. | |
462 | * | |
463 | * @param sdi Device instance to use. Must not be NULL. | |
464 | * | |
465 | * @return The driver instance or NULL on error. | |
466 | */ | |
2f5f9705 | 467 | SR_API struct sr_dev_driver *sr_dev_inst_driver_get(const struct sr_dev_inst *sdi) |
0157fdce SA |
468 | { |
469 | if (!sdi || !sdi->driver) | |
470 | return NULL; | |
471 | ||
472 | return sdi->driver; | |
473 | } | |
474 | ||
475 | /** | |
476 | * Queries a device instances' vendor. | |
477 | * | |
478 | * @param sdi Device instance to use. Must not be NULL. | |
479 | * | |
480 | * @return The vendor string or NULL. | |
481 | */ | |
2f5f9705 | 482 | SR_API const char *sr_dev_inst_vendor_get(const struct sr_dev_inst *sdi) |
0157fdce SA |
483 | { |
484 | if (!sdi) | |
485 | return NULL; | |
486 | ||
487 | return sdi->vendor; | |
488 | } | |
489 | ||
490 | /** | |
491 | * Queries a device instances' model. | |
492 | * | |
493 | * @param sdi Device instance to use. Must not be NULL. | |
494 | * | |
495 | * @return The model string or NULL. | |
496 | */ | |
2f5f9705 | 497 | SR_API const char *sr_dev_inst_model_get(const struct sr_dev_inst *sdi) |
0157fdce SA |
498 | { |
499 | if (!sdi) | |
500 | return NULL; | |
501 | ||
502 | return sdi->model; | |
503 | } | |
504 | ||
505 | /** | |
506 | * Queries a device instances' version. | |
507 | * | |
508 | * @param sdi Device instance to use. Must not be NULL. | |
509 | * | |
510 | * @return The version string or NULL. | |
511 | */ | |
2f5f9705 | 512 | SR_API const char *sr_dev_inst_version_get(const struct sr_dev_inst *sdi) |
0157fdce SA |
513 | { |
514 | if (!sdi) | |
515 | return NULL; | |
516 | ||
517 | return sdi->version; | |
518 | } | |
519 | ||
520 | /** | |
521 | * Queries a device instances' serial number. | |
522 | * | |
523 | * @param sdi Device instance to use. Must not be NULL. | |
524 | * | |
525 | * @return The serial number string or NULL. | |
526 | */ | |
2f5f9705 | 527 | SR_API const char *sr_dev_inst_sernum_get(const struct sr_dev_inst *sdi) |
0157fdce SA |
528 | { |
529 | if (!sdi) | |
530 | return NULL; | |
531 | ||
532 | return sdi->serial_num; | |
533 | } | |
534 | ||
535 | /** | |
536 | * Queries a device instances' connection identifier. | |
537 | * | |
538 | * @param sdi Device instance to use. Must not be NULL. | |
539 | * | |
540 | * @return A copy of the connection id string or NULL. The caller is responsible | |
541 | * for g_free()ing the string when it is no longer needed. | |
542 | */ | |
2f5f9705 | 543 | SR_API const char *sr_dev_inst_connid_get(const struct sr_dev_inst *sdi) |
0157fdce | 544 | { |
468665df | 545 | #ifdef HAVE_LIBUSB_1_0 |
0157fdce | 546 | struct drv_context *drvc; |
8de8551b | 547 | int cnt, i, a, b; |
9c6a2913 | 548 | char connection_id[64]; |
0157fdce SA |
549 | struct sr_usb_dev_inst *usb; |
550 | struct libusb_device **devlist; | |
9c6a2913 | 551 | #endif |
0157fdce SA |
552 | |
553 | if (!sdi) | |
554 | return NULL; | |
555 | ||
9c6a2913 | 556 | #ifdef HAVE_LIBSERIALPORT |
e8cbb223 SA |
557 | struct sr_serial_dev_inst *serial; |
558 | ||
559 | if ((!sdi->connection_id) && (sdi->inst_type == SR_INST_SERIAL)) { | |
560 | /* connection_id isn't populated, let's do that here. */ | |
561 | ||
562 | serial = sdi->conn; | |
2f5f9705 | 563 | ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(serial->port); |
e8cbb223 | 564 | } |
9c6a2913 | 565 | #endif |
e8cbb223 | 566 | |
9c6a2913 | 567 | #ifdef HAVE_LIBUSB_1_0 |
0157fdce SA |
568 | if ((!sdi->connection_id) && (sdi->inst_type == SR_INST_USB)) { |
569 | /* connection_id isn't populated, let's do that here. */ | |
570 | ||
41812aca | 571 | drvc = sdi->driver->context; |
0157fdce SA |
572 | usb = sdi->conn; |
573 | ||
574 | if ((cnt = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist)) < 0) { | |
575 | sr_err("Failed to retrieve device list: %s.", | |
576 | libusb_error_name(cnt)); | |
577 | return NULL; | |
578 | } | |
579 | ||
580 | for (i = 0; i < cnt; i++) { | |
0157fdce SA |
581 | /* Find the USB device by the logical address we know. */ |
582 | b = libusb_get_bus_number(devlist[i]); | |
583 | a = libusb_get_device_address(devlist[i]); | |
584 | if (b != usb->bus || a != usb->address) | |
585 | continue; | |
586 | ||
587 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
2f5f9705 | 588 | ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(connection_id); |
0157fdce SA |
589 | break; |
590 | } | |
591 | ||
592 | libusb_free_device_list(devlist, 1); | |
593 | } | |
9c6a2913 | 594 | #endif |
0157fdce SA |
595 | |
596 | return sdi->connection_id; | |
597 | } | |
598 | ||
e437da2b UH |
599 | /** |
600 | * Queries a device instances' channel list. | |
601 | * | |
602 | * @param sdi Device instance to use. Must not be NULL. | |
603 | * | |
604 | * @return The GSList of channels or NULL. | |
605 | */ | |
2f5f9705 | 606 | SR_API GSList *sr_dev_inst_channels_get(const struct sr_dev_inst *sdi) |
e437da2b UH |
607 | { |
608 | if (!sdi) | |
609 | return NULL; | |
610 | ||
611 | return sdi->channels; | |
612 | } | |
613 | ||
614 | /** | |
615 | * Queries a device instances' channel groups list. | |
616 | * | |
617 | * @param sdi Device instance to use. Must not be NULL. | |
618 | * | |
619 | * @return The GSList of channel groups or NULL. | |
620 | */ | |
2f5f9705 | 621 | SR_API GSList *sr_dev_inst_channel_groups_get(const struct sr_dev_inst *sdi) |
e437da2b UH |
622 | { |
623 | if (!sdi) | |
624 | return NULL; | |
625 | ||
626 | return sdi->channel_groups; | |
627 | } | |
628 | ||
7b870c38 | 629 | /** @} */ |