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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
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 | ||
20 | #include <stdio.h> | |
21 | #include <glib.h> | |
22 | #include "config.h" /* Needed for HAVE_LIBUSB_1_0 and others. */ | |
23 | #include "libsigrok.h" | |
24 | #include "libsigrok-internal.h" | |
25 | ||
26 | /** @cond PRIVATE */ | |
27 | #define LOG_PREFIX "device" | |
28 | /** @endcond */ | |
29 | ||
30 | /** | |
31 | * @file | |
32 | * | |
33 | * Device handling in libsigrok. | |
34 | */ | |
35 | ||
36 | /** | |
37 | * @defgroup grp_devices Devices | |
38 | * | |
39 | * Device handling in libsigrok. | |
40 | * | |
41 | * @{ | |
42 | */ | |
43 | ||
44 | /** @private | |
45 | * Allocate and initialize new struct sr_channel | |
46 | * @param[in] index @copydoc sr_channel::index | |
47 | * @param[in] type @copydoc sr_channel::type | |
48 | * @param[in] enabled @copydoc sr_channel::enabled | |
49 | * @param[in] name @copydoc sr_channel::name | |
50 | * | |
51 | * @return NULL (failure) or new struct sr_channel*. | |
52 | */ | |
53 | SR_PRIV struct sr_channel *sr_channel_new(int index, int type, | |
54 | gboolean enabled, const char *name) | |
55 | { | |
56 | struct sr_channel *ch; | |
57 | ||
58 | if (!(ch = g_try_malloc0(sizeof(struct sr_channel)))) { | |
59 | sr_err("Channel malloc failed."); | |
60 | return NULL; | |
61 | } | |
62 | ||
63 | ch->index = index; | |
64 | ch->type = type; | |
65 | ch->enabled = enabled; | |
66 | if (name) | |
67 | ch->name = g_strdup(name); | |
68 | ||
69 | return ch; | |
70 | } | |
71 | ||
72 | /** | |
73 | * Set the name of the specified channel in the specified device. | |
74 | * | |
75 | * If the channel already has a different name assigned to it, it will be | |
76 | * removed, and the new name will be saved instead. | |
77 | * | |
78 | * @param sdi The device instance the channel is connected to. | |
79 | * @param[in] channelnum The number of the channel whose name to set. | |
80 | * Note that the channel numbers start at 0. | |
81 | * @param[in] name The new name that the specified channel should get. A copy | |
82 | * of the string is made. | |
83 | * | |
84 | * @return SR_OK on success, or SR_ERR_ARG on invalid arguments. | |
85 | * | |
86 | * @since 0.3.0 | |
87 | */ | |
88 | SR_API int sr_dev_channel_name_set(const struct sr_dev_inst *sdi, | |
89 | int channelnum, const char *name) | |
90 | { | |
91 | GSList *l; | |
92 | struct sr_channel *ch; | |
93 | int ret; | |
94 | ||
95 | if (!sdi) { | |
96 | sr_err("%s: sdi was NULL", __func__); | |
97 | return SR_ERR_ARG; | |
98 | } | |
99 | ||
100 | ret = SR_ERR_ARG; | |
101 | for (l = sdi->channels; l; l = l->next) { | |
102 | ch = l->data; | |
103 | if (ch->index == channelnum) { | |
104 | g_free(ch->name); | |
105 | ch->name = g_strdup(name); | |
106 | ret = SR_OK; | |
107 | break; | |
108 | } | |
109 | } | |
110 | ||
111 | return ret; | |
112 | } | |
113 | ||
114 | /** | |
115 | * Enable or disable a channel on the specified device. | |
116 | * | |
117 | * @param sdi The device instance the channel is connected to. | |
118 | * @param channelnum The channel number, starting from 0. | |
119 | * @param state TRUE to enable the channel, FALSE to disable. | |
120 | * | |
121 | * @return SR_OK on success or SR_ERR on failure. In case of invalid | |
122 | * arguments, SR_ERR_ARG is returned and the channel enabled state | |
123 | * remains unchanged. | |
124 | * | |
125 | * @since 0.3.0 | |
126 | */ | |
127 | SR_API int sr_dev_channel_enable(const struct sr_dev_inst *sdi, int channelnum, | |
128 | gboolean state) | |
129 | { | |
130 | GSList *l; | |
131 | struct sr_channel *ch; | |
132 | int ret; | |
133 | gboolean was_enabled; | |
134 | ||
135 | if (!sdi) | |
136 | return SR_ERR_ARG; | |
137 | ||
138 | ret = SR_ERR_ARG; | |
139 | for (l = sdi->channels; l; l = l->next) { | |
140 | ch = l->data; | |
141 | if (ch->index == channelnum) { | |
142 | was_enabled = ch->enabled; | |
143 | ch->enabled = state; | |
144 | ret = SR_OK; | |
145 | if (!state != !was_enabled && sdi->driver | |
146 | && sdi->driver->config_channel_set) { | |
147 | ret = sdi->driver->config_channel_set( | |
148 | sdi, ch, SR_CHANNEL_SET_ENABLED); | |
149 | /* Roll back change if it wasn't applicable. */ | |
150 | if (ret == SR_ERR_ARG) | |
151 | ch->enabled = was_enabled; | |
152 | } | |
153 | break; | |
154 | } | |
155 | } | |
156 | ||
157 | return ret; | |
158 | } | |
159 | ||
160 | /** | |
161 | * Determine whether the specified device instance has the specified | |
162 | * capability. | |
163 | * | |
164 | * @param sdi Pointer to the device instance to be checked. Must not be NULL. | |
165 | * If the device's 'driver' field is NULL (virtual device), this | |
166 | * function will always return FALSE (virtual devices don't have | |
167 | * a hardware capabilities list). | |
168 | * @param[in] key The option that should be checked for is supported by the | |
169 | * specified device. | |
170 | * | |
171 | * @retval TRUE Device has the specified option | |
172 | * @retval FALSE Device does not have the specified option, invalid input | |
173 | * parameters or other error conditions. | |
174 | * | |
175 | * @since 0.2.0 | |
176 | */ | |
177 | SR_API gboolean sr_dev_has_option(const struct sr_dev_inst *sdi, int key) | |
178 | { | |
179 | GVariant *gvar; | |
180 | const int *devopts; | |
181 | gsize num_opts, i; | |
182 | int ret; | |
183 | ||
184 | if (!sdi || !sdi->driver || !sdi->driver->config_list) | |
185 | return FALSE; | |
186 | ||
187 | if (sdi->driver->config_list(SR_CONF_DEVICE_OPTIONS, | |
188 | &gvar, sdi, NULL) != SR_OK) | |
189 | return FALSE; | |
190 | ||
191 | ret = FALSE; | |
192 | devopts = g_variant_get_fixed_array(gvar, &num_opts, sizeof(int32_t)); | |
193 | for (i = 0; i < num_opts; i++) { | |
194 | if ((devopts[i] & SR_CONF_MASK) == key) { | |
195 | ret = TRUE; | |
196 | break; | |
197 | } | |
198 | } | |
199 | g_variant_unref(gvar); | |
200 | ||
201 | return ret; | |
202 | } | |
203 | ||
204 | /** @private | |
205 | * Allocate and init a new device instance struct. | |
206 | * | |
207 | * @retval struct sr_dev_inst *. Dynamically allocated, free using | |
208 | * sr_dev_inst_free(). | |
209 | */ | |
210 | SR_PRIV struct sr_dev_inst *sr_dev_inst_new(void) | |
211 | { | |
212 | struct sr_dev_inst *sdi; | |
213 | ||
214 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
215 | ||
216 | sdi->driver = NULL; | |
217 | sdi->status = -1; | |
218 | sdi->inst_type = -1; | |
219 | sdi->vendor = NULL; | |
220 | sdi->model = NULL; | |
221 | sdi->version = NULL; | |
222 | sdi->serial_num = NULL; | |
223 | sdi->connection_id = NULL; | |
224 | sdi->channels = NULL; | |
225 | sdi->channel_groups = NULL; | |
226 | sdi->session = NULL; | |
227 | sdi->conn = NULL; | |
228 | sdi->priv = NULL; | |
229 | ||
230 | return sdi; | |
231 | } | |
232 | ||
233 | /** | |
234 | * Allocate and init a new user-generated device instance. | |
235 | */ | |
236 | SR_API struct sr_dev_inst *sr_dev_inst_user_new(const char *vendor, | |
237 | const char *model, const char *version) | |
238 | { | |
239 | struct sr_dev_inst *sdi; | |
240 | ||
241 | sdi = sr_dev_inst_new(); | |
242 | sdi->vendor = g_strdup(vendor); | |
243 | sdi->model = g_strdup(model); | |
244 | sdi->version = g_strdup(version); | |
245 | sdi->inst_type = SR_INST_USER; | |
246 | ||
247 | return sdi; | |
248 | } | |
249 | ||
250 | /** | |
251 | * Add a new channel to the specified device instance. | |
252 | */ | |
253 | SR_API int sr_dev_inst_channel_add(struct sr_dev_inst *sdi, int index, int type, const char *name) | |
254 | { | |
255 | struct sr_channel *ch; | |
256 | ||
257 | if (!sdi || sdi->inst_type != SR_INST_USER || index < 0) | |
258 | return SR_ERR_ARG; | |
259 | ||
260 | ch = sr_channel_new(index, type, TRUE, name); | |
261 | if (!ch) | |
262 | return SR_ERR; | |
263 | ||
264 | sdi->channels = g_slist_append(sdi->channels, ch); | |
265 | ||
266 | return SR_OK; | |
267 | } | |
268 | ||
269 | /** @private | |
270 | * Free device instance struct created by sr_dev_inst(). | |
271 | * @param sdi device instance to free. | |
272 | */ | |
273 | SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi) | |
274 | { | |
275 | struct sr_channel *ch; | |
276 | struct sr_channel_group *cg; | |
277 | GSList *l; | |
278 | ||
279 | for (l = sdi->channels; l; l = l->next) { | |
280 | ch = l->data; | |
281 | g_free(ch->name); | |
282 | g_free(ch->priv); | |
283 | g_free(ch); | |
284 | } | |
285 | g_slist_free(sdi->channels); | |
286 | ||
287 | for (l = sdi->channel_groups; l; l = l->next) { | |
288 | cg = l->data; | |
289 | g_free(cg->name); | |
290 | g_slist_free(cg->channels); | |
291 | g_free(cg->priv); | |
292 | g_free(cg); | |
293 | } | |
294 | g_slist_free(sdi->channel_groups); | |
295 | ||
296 | g_free(sdi->vendor); | |
297 | g_free(sdi->model); | |
298 | g_free(sdi->version); | |
299 | g_free(sdi->serial_num); | |
300 | g_free(sdi->connection_id); | |
301 | g_free(sdi); | |
302 | } | |
303 | ||
304 | #ifdef HAVE_LIBUSB_1_0 | |
305 | ||
306 | /** @private | |
307 | * Allocate and init struct for USB device instance. | |
308 | * @param[in] bus @copydoc sr_usb_dev_inst::bus | |
309 | * @param[in] address @copydoc sr_usb_dev_inst::address | |
310 | * @param[in] hdl @copydoc sr_usb_dev_inst::devhdl | |
311 | * | |
312 | * @retval NULL Error | |
313 | * @retval other struct sr_usb_dev_inst * for USB device instance. | |
314 | */ | |
315 | SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus, | |
316 | uint8_t address, struct libusb_device_handle *hdl) | |
317 | { | |
318 | struct sr_usb_dev_inst *udi; | |
319 | ||
320 | if (!(udi = g_try_malloc(sizeof(struct sr_usb_dev_inst)))) { | |
321 | sr_err("USB device instance malloc failed."); | |
322 | return NULL; | |
323 | } | |
324 | ||
325 | udi->bus = bus; | |
326 | udi->address = address; | |
327 | udi->devhdl = hdl; | |
328 | ||
329 | return udi; | |
330 | } | |
331 | ||
332 | /** @private | |
333 | * Free struct * allocated by sr_usb_dev_inst(). | |
334 | * @param usb struct* to free. Must not be NULL. | |
335 | */ | |
336 | SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb) | |
337 | { | |
338 | g_free(usb); | |
339 | } | |
340 | ||
341 | #endif | |
342 | ||
343 | #ifdef HAVE_LIBSERIALPORT | |
344 | ||
345 | /** | |
346 | * @private | |
347 | * | |
348 | * Both parameters are copied to newly allocated strings, and freed | |
349 | * automatically by sr_serial_dev_inst_free(). | |
350 | * | |
351 | * @param[in] port OS-specific serial port specification. Examples: | |
352 | * "/dev/ttyUSB0", "/dev/ttyACM1", "/dev/tty.Modem-0", "COM1". | |
353 | * @param[in] serialcomm A serial communication parameters string, in the form | |
354 | * of \<speed\>/\<data bits\>\<parity\>\<stopbits\>, for example | |
355 | * "9600/8n1" or "600/7o2". This is an optional parameter; | |
356 | * it may be filled in later. | |
357 | * | |
358 | * @return A pointer to a newly initialized struct sr_serial_dev_inst, | |
359 | * or NULL on error. | |
360 | */ | |
361 | SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port, | |
362 | const char *serialcomm) | |
363 | { | |
364 | struct sr_serial_dev_inst *serial; | |
365 | ||
366 | if (!port) { | |
367 | sr_err("Serial port required."); | |
368 | return NULL; | |
369 | } | |
370 | ||
371 | if (!(serial = g_try_malloc0(sizeof(struct sr_serial_dev_inst)))) { | |
372 | sr_err("Serial device instance malloc failed."); | |
373 | return NULL; | |
374 | } | |
375 | ||
376 | serial->port = g_strdup(port); | |
377 | if (serialcomm) | |
378 | serial->serialcomm = g_strdup(serialcomm); | |
379 | ||
380 | return serial; | |
381 | } | |
382 | ||
383 | /** @private | |
384 | * Free struct sr_serial_dev_inst * allocated by sr_serial_dev_inst(). | |
385 | * @param serial struct sr_serial_dev_inst * to free. Must not be NULL. | |
386 | */ | |
387 | SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial) | |
388 | { | |
389 | g_free(serial->port); | |
390 | g_free(serial->serialcomm); | |
391 | g_free(serial); | |
392 | } | |
393 | #endif | |
394 | ||
395 | /** @private */ | |
396 | SR_PRIV struct sr_usbtmc_dev_inst *sr_usbtmc_dev_inst_new(const char *device) | |
397 | { | |
398 | struct sr_usbtmc_dev_inst *usbtmc; | |
399 | ||
400 | if (!device) { | |
401 | sr_err("Device name required."); | |
402 | return NULL; | |
403 | } | |
404 | ||
405 | if (!(usbtmc = g_try_malloc0(sizeof(struct sr_usbtmc_dev_inst)))) { | |
406 | sr_err("USBTMC device instance malloc failed."); | |
407 | return NULL; | |
408 | } | |
409 | ||
410 | usbtmc->device = g_strdup(device); | |
411 | usbtmc->fd = -1; | |
412 | ||
413 | return usbtmc; | |
414 | } | |
415 | ||
416 | /** @private */ | |
417 | SR_PRIV void sr_usbtmc_dev_inst_free(struct sr_usbtmc_dev_inst *usbtmc) | |
418 | { | |
419 | g_free(usbtmc->device); | |
420 | g_free(usbtmc); | |
421 | } | |
422 | ||
423 | /** | |
424 | * Get the list of devices/instances of the specified driver. | |
425 | * | |
426 | * @param driver The driver to use. Must not be NULL. | |
427 | * | |
428 | * @return The list of devices/instances of this driver, or NULL upon errors | |
429 | * or if the list is empty. | |
430 | * | |
431 | * @since 0.2.0 | |
432 | */ | |
433 | SR_API GSList *sr_dev_list(const struct sr_dev_driver *driver) | |
434 | { | |
435 | if (driver && driver->dev_list) | |
436 | return driver->dev_list(); | |
437 | else | |
438 | return NULL; | |
439 | } | |
440 | ||
441 | /** | |
442 | * Clear the list of device instances a driver knows about. | |
443 | * | |
444 | * @param driver The driver to use. This must be a pointer to one of | |
445 | * the entries returned by sr_driver_list(). Must not be NULL. | |
446 | * | |
447 | * @retval SR_OK Success | |
448 | * @retval SR_ERR_ARG Invalid driver | |
449 | * | |
450 | * @since 0.2.0 | |
451 | */ | |
452 | SR_API int sr_dev_clear(const struct sr_dev_driver *driver) | |
453 | { | |
454 | int ret; | |
455 | ||
456 | if (!driver) { | |
457 | sr_err("Invalid driver."); | |
458 | return SR_ERR_ARG; | |
459 | } | |
460 | ||
461 | if (driver->dev_clear) | |
462 | ret = driver->dev_clear(); | |
463 | else | |
464 | ret = std_dev_clear(driver, NULL); | |
465 | ||
466 | return ret; | |
467 | } | |
468 | ||
469 | /** | |
470 | * Open the specified device. | |
471 | * | |
472 | * @param sdi Device instance to use. Must not be NULL. | |
473 | * | |
474 | * @return SR_OK upon success, a negative error code upon errors. | |
475 | * | |
476 | * @since 0.2.0 | |
477 | */ | |
478 | SR_API int sr_dev_open(struct sr_dev_inst *sdi) | |
479 | { | |
480 | int ret; | |
481 | ||
482 | if (!sdi || !sdi->driver || !sdi->driver->dev_open) | |
483 | return SR_ERR; | |
484 | ||
485 | ret = sdi->driver->dev_open(sdi); | |
486 | ||
487 | return ret; | |
488 | } | |
489 | ||
490 | /** | |
491 | * Close the specified device. | |
492 | * | |
493 | * @param sdi Device instance to use. Must not be NULL. | |
494 | * | |
495 | * @return SR_OK upon success, a negative error code upon errors. | |
496 | * | |
497 | * @since 0.2.0 | |
498 | */ | |
499 | SR_API int sr_dev_close(struct sr_dev_inst *sdi) | |
500 | { | |
501 | int ret; | |
502 | ||
503 | if (!sdi || !sdi->driver || !sdi->driver->dev_close) | |
504 | return SR_ERR; | |
505 | ||
506 | ret = sdi->driver->dev_close(sdi); | |
507 | ||
508 | return ret; | |
509 | } | |
510 | ||
511 | /** | |
512 | * Queries a device instances' driver. | |
513 | * | |
514 | * @param sdi Device instance to use. Must not be NULL. | |
515 | * | |
516 | * @return The driver instance or NULL on error. | |
517 | */ | |
518 | SR_API struct sr_dev_driver *sr_dev_inst_driver_get(const struct sr_dev_inst *sdi) | |
519 | { | |
520 | if (!sdi || !sdi->driver) | |
521 | return NULL; | |
522 | ||
523 | return sdi->driver; | |
524 | } | |
525 | ||
526 | /** | |
527 | * Queries a device instances' vendor. | |
528 | * | |
529 | * @param sdi Device instance to use. Must not be NULL. | |
530 | * | |
531 | * @return The vendor string or NULL. | |
532 | */ | |
533 | SR_API const char *sr_dev_inst_vendor_get(const struct sr_dev_inst *sdi) | |
534 | { | |
535 | if (!sdi) | |
536 | return NULL; | |
537 | ||
538 | return sdi->vendor; | |
539 | } | |
540 | ||
541 | /** | |
542 | * Queries a device instances' model. | |
543 | * | |
544 | * @param sdi Device instance to use. Must not be NULL. | |
545 | * | |
546 | * @return The model string or NULL. | |
547 | */ | |
548 | SR_API const char *sr_dev_inst_model_get(const struct sr_dev_inst *sdi) | |
549 | { | |
550 | if (!sdi) | |
551 | return NULL; | |
552 | ||
553 | return sdi->model; | |
554 | } | |
555 | ||
556 | /** | |
557 | * Queries a device instances' version. | |
558 | * | |
559 | * @param sdi Device instance to use. Must not be NULL. | |
560 | * | |
561 | * @return The version string or NULL. | |
562 | */ | |
563 | SR_API const char *sr_dev_inst_version_get(const struct sr_dev_inst *sdi) | |
564 | { | |
565 | if (!sdi) | |
566 | return NULL; | |
567 | ||
568 | return sdi->version; | |
569 | } | |
570 | ||
571 | /** | |
572 | * Queries a device instances' serial number. | |
573 | * | |
574 | * @param sdi Device instance to use. Must not be NULL. | |
575 | * | |
576 | * @return The serial number string or NULL. | |
577 | */ | |
578 | SR_API const char *sr_dev_inst_sernum_get(const struct sr_dev_inst *sdi) | |
579 | { | |
580 | if (!sdi) | |
581 | return NULL; | |
582 | ||
583 | return sdi->serial_num; | |
584 | } | |
585 | ||
586 | /** | |
587 | * Queries a device instances' connection identifier. | |
588 | * | |
589 | * @param sdi Device instance to use. Must not be NULL. | |
590 | * | |
591 | * @return A copy of the connection id string or NULL. The caller is responsible | |
592 | * for g_free()ing the string when it is no longer needed. | |
593 | */ | |
594 | SR_API const char *sr_dev_inst_connid_get(const struct sr_dev_inst *sdi) | |
595 | { | |
596 | struct drv_context *drvc; | |
597 | int r, cnt, i, a, b; | |
598 | char connection_id[64]; | |
599 | ||
600 | #ifdef HAVE_LIBUSB_1_0 | |
601 | struct sr_usb_dev_inst *usb; | |
602 | struct libusb_device **devlist; | |
603 | struct libusb_device_descriptor des; | |
604 | #endif | |
605 | ||
606 | if (!sdi) | |
607 | return NULL; | |
608 | ||
609 | #ifdef HAVE_LIBSERIALPORT | |
610 | struct sr_serial_dev_inst *serial; | |
611 | ||
612 | if ((!sdi->connection_id) && (sdi->inst_type == SR_INST_SERIAL)) { | |
613 | /* connection_id isn't populated, let's do that here. */ | |
614 | ||
615 | serial = sdi->conn; | |
616 | ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(serial->port); | |
617 | } | |
618 | #endif | |
619 | ||
620 | ||
621 | #ifdef HAVE_LIBUSB_1_0 | |
622 | if ((!sdi->connection_id) && (sdi->inst_type == SR_INST_USB)) { | |
623 | /* connection_id isn't populated, let's do that here. */ | |
624 | ||
625 | drvc = sdi->driver->priv; | |
626 | usb = sdi->conn; | |
627 | ||
628 | if ((cnt = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist)) < 0) { | |
629 | sr_err("Failed to retrieve device list: %s.", | |
630 | libusb_error_name(cnt)); | |
631 | return NULL; | |
632 | } | |
633 | ||
634 | for (i = 0; i < cnt; i++) { | |
635 | if ((r = libusb_get_device_descriptor(devlist[i], &des)) < 0) { | |
636 | sr_err("Failed to get device descriptor: %s.", | |
637 | libusb_error_name(r)); | |
638 | continue; | |
639 | } | |
640 | ||
641 | /* Find the USB device by the logical address we know. */ | |
642 | b = libusb_get_bus_number(devlist[i]); | |
643 | a = libusb_get_device_address(devlist[i]); | |
644 | if (b != usb->bus || a != usb->address) | |
645 | continue; | |
646 | ||
647 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
648 | ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(connection_id); | |
649 | break; | |
650 | } | |
651 | ||
652 | libusb_free_device_list(devlist, 1); | |
653 | } | |
654 | #endif | |
655 | ||
656 | return sdi->connection_id; | |
657 | } | |
658 | ||
659 | /** | |
660 | * Queries a device instances' channel list. | |
661 | * | |
662 | * @param sdi Device instance to use. Must not be NULL. | |
663 | * | |
664 | * @return The GSList of channels or NULL. | |
665 | */ | |
666 | SR_API GSList *sr_dev_inst_channels_get(const struct sr_dev_inst *sdi) | |
667 | { | |
668 | if (!sdi) | |
669 | return NULL; | |
670 | ||
671 | return sdi->channels; | |
672 | } | |
673 | ||
674 | /** | |
675 | * Queries a device instances' channel groups list. | |
676 | * | |
677 | * @param sdi Device instance to use. Must not be NULL. | |
678 | * | |
679 | * @return The GSList of channel groups or NULL. | |
680 | */ | |
681 | SR_API GSList *sr_dev_inst_channel_groups_get(const struct sr_dev_inst *sdi) | |
682 | { | |
683 | if (!sdi) | |
684 | return NULL; | |
685 | ||
686 | return sdi->channel_groups; | |
687 | } | |
688 | ||
689 | /** @} */ |