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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 | /* Message logging helpers with subsystem-specific prefix string. */ | |
27 | #define LOG_PREFIX "device: " | |
28 | #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args) | |
29 | #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args) | |
30 | #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args) | |
31 | #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args) | |
32 | #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args) | |
33 | #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args) | |
34 | ||
35 | /** | |
36 | * @file | |
37 | * | |
38 | * Device handling in libsigrok. | |
39 | */ | |
40 | ||
41 | /** | |
42 | * @defgroup grp_devices Devices | |
43 | * | |
44 | * Device handling in libsigrok. | |
45 | * | |
46 | * @{ | |
47 | */ | |
48 | ||
49 | /** @private | |
50 | * Allocate and initialize new struct sr_probe | |
51 | * @param[in] index \copydoc sr_probe::index | |
52 | * @param[in] type \copydoc sr_probe::type | |
53 | * @param[in] enabled \copydoc sr_probe::enabled | |
54 | * @param[in] name \copydoc sr_probe::name | |
55 | * | |
56 | * @return NULL (failure) or new struct sr_probe*. | |
57 | */ | |
58 | SR_PRIV struct sr_probe *sr_probe_new(int index, int type, | |
59 | gboolean enabled, const char *name) | |
60 | { | |
61 | struct sr_probe *probe; | |
62 | ||
63 | if (!(probe = g_try_malloc0(sizeof(struct sr_probe)))) { | |
64 | sr_err("Probe malloc failed."); | |
65 | return NULL; | |
66 | } | |
67 | ||
68 | probe->index = index; | |
69 | probe->type = type; | |
70 | probe->enabled = enabled; | |
71 | if (name) | |
72 | probe->name = g_strdup(name); | |
73 | ||
74 | return probe; | |
75 | } | |
76 | ||
77 | /** | |
78 | * Set the name of the specified probe in the specified device. | |
79 | * | |
80 | * If the probe already has a different name assigned to it, it will be | |
81 | * removed, and the new name will be saved instead. | |
82 | * | |
83 | * @param sdi The device instance the probe is connected to. | |
84 | * @param[in] probenum The number of the probe whose name to set. | |
85 | * Note that the probe numbers start at 0. | |
86 | * @param[in] name The new name that the specified probe should get. A copy | |
87 | * of the string is made. | |
88 | * | |
89 | * @return SR_OK on success, or SR_ERR_ARG on invalid arguments. | |
90 | * | |
91 | * @since 0.2.0 | |
92 | */ | |
93 | SR_API int sr_dev_probe_name_set(const struct sr_dev_inst *sdi, | |
94 | int probenum, const char *name) | |
95 | { | |
96 | GSList *l; | |
97 | struct sr_probe *probe; | |
98 | int ret; | |
99 | ||
100 | if (!sdi) { | |
101 | sr_err("%s: sdi was NULL", __func__); | |
102 | return SR_ERR_ARG; | |
103 | } | |
104 | ||
105 | ret = SR_ERR_ARG; | |
106 | for (l = sdi->probes; l; l = l->next) { | |
107 | probe = l->data; | |
108 | if (probe->index == probenum) { | |
109 | g_free(probe->name); | |
110 | probe->name = g_strdup(name); | |
111 | ret = SR_OK; | |
112 | break; | |
113 | } | |
114 | } | |
115 | ||
116 | return ret; | |
117 | } | |
118 | ||
119 | /** | |
120 | * Enable or disable a probe on the specified device. | |
121 | * | |
122 | * @param sdi The device instance the probe is connected to. | |
123 | * @param probenum The probe number, starting from 0. | |
124 | * @param state TRUE to enable the probe, FALSE to disable. | |
125 | * | |
126 | * @return SR_OK on success, or SR_ERR_ARG on invalid arguments. | |
127 | * | |
128 | * @since 0.2.0 | |
129 | */ | |
130 | SR_API int sr_dev_probe_enable(const struct sr_dev_inst *sdi, int probenum, | |
131 | gboolean state) | |
132 | { | |
133 | GSList *l; | |
134 | struct sr_probe *probe; | |
135 | int ret; | |
136 | ||
137 | if (!sdi) | |
138 | return SR_ERR_ARG; | |
139 | ||
140 | ret = SR_ERR_ARG; | |
141 | for (l = sdi->probes; l; l = l->next) { | |
142 | probe = l->data; | |
143 | if (probe->index == probenum) { | |
144 | probe->enabled = state; | |
145 | ret = SR_OK; | |
146 | break; | |
147 | } | |
148 | } | |
149 | ||
150 | return ret; | |
151 | } | |
152 | ||
153 | /** | |
154 | * Add a trigger to the specified device (and the specified probe). | |
155 | * | |
156 | * If the specified probe of this device already has a trigger, it will | |
157 | * be silently replaced. | |
158 | * | |
159 | * @param[in,out] sdi Pointer to the device instance; must not be NULL. | |
160 | * @param[in] probenum Number of probe, starting at 0. | |
161 | * @param[in] trigger Trigger string, in the format used by sigrok-cli | |
162 | * | |
163 | * @return SR_OK on success, or SR_ERR_ARG on invalid arguments. | |
164 | * | |
165 | * @since 0.2.0 | |
166 | */ | |
167 | SR_API int sr_dev_trigger_set(const struct sr_dev_inst *sdi, int probenum, | |
168 | const char *trigger) | |
169 | { | |
170 | GSList *l; | |
171 | struct sr_probe *probe; | |
172 | int ret; | |
173 | ||
174 | if (!sdi) | |
175 | return SR_ERR_ARG; | |
176 | ||
177 | ret = SR_ERR_ARG; | |
178 | for (l = sdi->probes; l; l = l->next) { | |
179 | probe = l->data; | |
180 | if (probe->index == probenum) { | |
181 | /* If the probe already has a trigger, kill it first. */ | |
182 | g_free(probe->trigger); | |
183 | probe->trigger = g_strdup(trigger); | |
184 | ret = SR_OK; | |
185 | break; | |
186 | } | |
187 | } | |
188 | ||
189 | return ret; | |
190 | } | |
191 | ||
192 | /** | |
193 | * Determine whether the specified device instance has the specified | |
194 | * capability. | |
195 | * | |
196 | * @param sdi Pointer to the device instance to be checked. Must not be NULL. | |
197 | * If the device's 'driver' field is NULL (virtual device), this | |
198 | * function will always return FALSE (virtual devices don't have | |
199 | * a hardware capabilities list). | |
200 | * @param[in] key The option that should be checked for is supported by the | |
201 | * specified device. | |
202 | * | |
203 | * @retval TRUE Device has the specified option | |
204 | * @retval FALSE Device does not have the specified option, invalid input | |
205 | * parameters or other error conditions. | |
206 | * | |
207 | * @since 0.2.0 | |
208 | */ | |
209 | SR_API gboolean sr_dev_has_option(const struct sr_dev_inst *sdi, int key) | |
210 | { | |
211 | GVariant *gvar; | |
212 | const int *devopts; | |
213 | gsize num_opts, i; | |
214 | int ret; | |
215 | ||
216 | if (!sdi || !sdi->driver || !sdi->driver->config_list) | |
217 | return FALSE; | |
218 | ||
219 | if (sdi->driver->config_list(SR_CONF_DEVICE_OPTIONS, | |
220 | &gvar, NULL, NULL) != SR_OK) | |
221 | return FALSE; | |
222 | ||
223 | ret = FALSE; | |
224 | devopts = g_variant_get_fixed_array(gvar, &num_opts, sizeof(int32_t)); | |
225 | for (i = 0; i < num_opts; i++) { | |
226 | if (devopts[i] == key) { | |
227 | ret = TRUE; | |
228 | break; | |
229 | } | |
230 | } | |
231 | g_variant_unref(gvar); | |
232 | ||
233 | return ret; | |
234 | } | |
235 | ||
236 | /** @private | |
237 | * Allocate and init new device instance struct. | |
238 | * \param[in] index \copydoc sr_dev_inst::index | |
239 | * \param[in] status \copydoc sr_dev_inst::status | |
240 | * \param[in] vendor \copydoc sr_dev_inst::vendor | |
241 | * \param[in] model \copydoc sr_dev_inst::model | |
242 | * \param[in] version \copydoc sr_dev_inst::version | |
243 | * | |
244 | * \retval NULL Error | |
245 | * \retval struct sr_dev_inst *. Dynamically allocated, free using | |
246 | * sr_dev_inst_free(). | |
247 | */ | |
248 | SR_PRIV struct sr_dev_inst *sr_dev_inst_new(int index, int status, | |
249 | const char *vendor, const char *model, const char *version) | |
250 | { | |
251 | struct sr_dev_inst *sdi; | |
252 | ||
253 | if (!(sdi = g_try_malloc(sizeof(struct sr_dev_inst)))) { | |
254 | sr_err("Device instance malloc failed."); | |
255 | return NULL; | |
256 | } | |
257 | ||
258 | sdi->driver = NULL; | |
259 | sdi->index = index; | |
260 | sdi->status = status; | |
261 | sdi->inst_type = -1; | |
262 | sdi->vendor = vendor ? g_strdup(vendor) : NULL; | |
263 | sdi->model = model ? g_strdup(model) : NULL; | |
264 | sdi->version = version ? g_strdup(version) : NULL; | |
265 | sdi->probes = NULL; | |
266 | sdi->probe_groups = NULL; | |
267 | sdi->conn = NULL; | |
268 | sdi->priv = NULL; | |
269 | ||
270 | return sdi; | |
271 | } | |
272 | ||
273 | /** @private | |
274 | * Free device instance struct created by sr_dev_inst(). | |
275 | * \param sdi struct* to free. | |
276 | */ | |
277 | SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi) | |
278 | { | |
279 | struct sr_probe *probe; | |
280 | GSList *l; | |
281 | ||
282 | for (l = sdi->probes; l; l = l->next) { | |
283 | probe = l->data; | |
284 | g_free(probe->name); | |
285 | g_free(probe->trigger); | |
286 | g_free(probe); | |
287 | } | |
288 | g_slist_free(sdi->probes); | |
289 | ||
290 | if (sdi->probe_groups) | |
291 | g_slist_free(sdi->probe_groups); | |
292 | ||
293 | g_free(sdi->vendor); | |
294 | g_free(sdi->model); | |
295 | g_free(sdi->version); | |
296 | g_free(sdi); | |
297 | } | |
298 | ||
299 | #ifdef HAVE_LIBUSB_1_0 | |
300 | ||
301 | /** @private | |
302 | * Allocate and init struct for USB device instance. | |
303 | * \param[in] bus \copydoc sr_usb_dev_inst::bus | |
304 | * \param[in] address \copydoc sr_usb_dev_inst::address | |
305 | * \param[in] hdl \copydoc sr_usb_dev_inst::devhdl | |
306 | * | |
307 | * \retval NULL Error | |
308 | * \retval other struct sr_usb_dev_inst * for USB device instance. | |
309 | */ | |
310 | SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus, | |
311 | uint8_t address, struct libusb_device_handle *hdl) | |
312 | { | |
313 | struct sr_usb_dev_inst *udi; | |
314 | ||
315 | if (!(udi = g_try_malloc(sizeof(struct sr_usb_dev_inst)))) { | |
316 | sr_err("USB device instance malloc failed."); | |
317 | return NULL; | |
318 | } | |
319 | ||
320 | udi->bus = bus; | |
321 | udi->address = address; | |
322 | udi->devhdl = hdl; | |
323 | ||
324 | return udi; | |
325 | } | |
326 | ||
327 | /** @private | |
328 | * Free struct * allocated by sr_usb_dev_inst(). | |
329 | * \param usb struct* to free. Must not be NULL. | |
330 | */ | |
331 | SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb) | |
332 | { | |
333 | g_free(usb); | |
334 | } | |
335 | ||
336 | #endif | |
337 | ||
338 | #ifdef HAVE_LIBSERIALPORT | |
339 | ||
340 | /** | |
341 | * @private | |
342 | * | |
343 | * Both parameters are copied to newly allocated strings, and freed | |
344 | * automatically by sr_serial_dev_inst_free(). | |
345 | * | |
346 | * @param[in] port OS-specific serial port specification. Examples: | |
347 | * "/dev/ttyUSB0", "/dev/ttyACM1", "/dev/tty.Modem-0", "COM1". | |
348 | * @param[in] serialcomm A serial communication parameters string, in the form | |
349 | * of \<speed\>/\<data bits\>\<parity\>\<stopbits\>, for example | |
350 | * "9600/8n1" or "600/7o2". This is an optional parameter; | |
351 | * it may be filled in later. | |
352 | * | |
353 | * @return A pointer to a newly initialized struct sr_serial_dev_inst, | |
354 | * or NULL on error. | |
355 | */ | |
356 | SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port, | |
357 | const char *serialcomm) | |
358 | { | |
359 | struct sr_serial_dev_inst *serial; | |
360 | ||
361 | if (!port) { | |
362 | sr_err("Serial port required."); | |
363 | return NULL; | |
364 | } | |
365 | ||
366 | if (!(serial = g_try_malloc0(sizeof(struct sr_serial_dev_inst)))) { | |
367 | sr_err("Serial device instance malloc failed."); | |
368 | return NULL; | |
369 | } | |
370 | ||
371 | serial->port = g_strdup(port); | |
372 | if (serialcomm) | |
373 | serial->serialcomm = g_strdup(serialcomm); | |
374 | ||
375 | return serial; | |
376 | } | |
377 | ||
378 | /** @private | |
379 | * Free struct sr_serial_dev_inst * allocated by sr_serial_dev_inst(). | |
380 | * \param serial struct sr_serial_dev_inst * to free. Must not be NULL. | |
381 | */ | |
382 | SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial) | |
383 | { | |
384 | g_free(serial->port); | |
385 | g_free(serial->serialcomm); | |
386 | g_free(serial); | |
387 | } | |
388 | #endif | |
389 | ||
390 | SR_PRIV struct sr_usbtmc_dev_inst *sr_usbtmc_dev_inst_new(const char *device) | |
391 | { | |
392 | struct sr_usbtmc_dev_inst *usbtmc; | |
393 | ||
394 | if (!device) { | |
395 | sr_err("Device name required."); | |
396 | return NULL; | |
397 | } | |
398 | ||
399 | if (!(usbtmc = g_try_malloc0(sizeof(struct sr_usbtmc_dev_inst)))) { | |
400 | sr_err("USBTMC device instance malloc failed."); | |
401 | return NULL; | |
402 | } | |
403 | ||
404 | usbtmc->device = g_strdup(device); | |
405 | usbtmc->fd = -1; | |
406 | ||
407 | return usbtmc; | |
408 | } | |
409 | ||
410 | SR_PRIV void sr_usbtmc_dev_inst_free(struct sr_usbtmc_dev_inst *usbtmc) | |
411 | { | |
412 | g_free(usbtmc->device); | |
413 | g_free(usbtmc); | |
414 | } | |
415 | ||
416 | /** | |
417 | * Get the list of devices/instances of the specified driver. | |
418 | * | |
419 | * @param driver The driver to use. Must not be NULL. | |
420 | * | |
421 | * @return The list of devices/instances of this driver, or NULL upon errors | |
422 | * or if the list is empty. | |
423 | * | |
424 | * @since 0.2.0 | |
425 | */ | |
426 | SR_API GSList *sr_dev_list(const struct sr_dev_driver *driver) | |
427 | { | |
428 | if (driver && driver->dev_list) | |
429 | return driver->dev_list(); | |
430 | else | |
431 | return NULL; | |
432 | } | |
433 | ||
434 | /** | |
435 | * Clear all devices/instances of the specified driver. | |
436 | * | |
437 | * @param driver The driver to use. Must not be NULL. | |
438 | * | |
439 | * @return SR_OK upon success, a negative error code upon errors. | |
440 | * | |
441 | * @since 0.2.0 | |
442 | */ | |
443 | SR_API int sr_dev_clear(const struct sr_dev_driver *driver) | |
444 | { | |
445 | if (driver && driver->dev_clear) | |
446 | return driver->dev_clear(); | |
447 | else | |
448 | return SR_OK; | |
449 | } | |
450 | ||
451 | /** | |
452 | * Open the specified device. | |
453 | * | |
454 | * @param sdi Device instance to use. Must not be NULL. | |
455 | * | |
456 | * @return SR_OK upon success, a negative error code upon errors. | |
457 | * | |
458 | * @since 0.2.0 | |
459 | */ | |
460 | SR_API int sr_dev_open(struct sr_dev_inst *sdi) | |
461 | { | |
462 | int ret; | |
463 | ||
464 | if (!sdi || !sdi->driver || !sdi->driver->dev_open) | |
465 | return SR_ERR; | |
466 | ||
467 | ret = sdi->driver->dev_open(sdi); | |
468 | ||
469 | return ret; | |
470 | } | |
471 | ||
472 | /** | |
473 | * Close the specified device. | |
474 | * | |
475 | * @param sdi Device instance to use. Must not be NULL. | |
476 | * | |
477 | * @return SR_OK upon success, a negative error code upon errors. | |
478 | * | |
479 | * @since 0.2.0 | |
480 | */ | |
481 | SR_API int sr_dev_close(struct sr_dev_inst *sdi) | |
482 | { | |
483 | int ret; | |
484 | ||
485 | if (!sdi || !sdi->driver || !sdi->driver->dev_close) | |
486 | return SR_ERR; | |
487 | ||
488 | ret = sdi->driver->dev_close(sdi); | |
489 | ||
490 | return ret; | |
491 | } | |
492 | ||
493 | /** @} */ |