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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 | SR_PRIV struct sr_probe *sr_probe_new(int index, int type, | |
51 | gboolean enabled, const char *name) | |
52 | { | |
53 | struct sr_probe *probe; | |
54 | ||
55 | if (!(probe = g_try_malloc0(sizeof(struct sr_probe)))) { | |
56 | sr_err("Probe malloc failed."); | |
57 | return NULL; | |
58 | } | |
59 | ||
60 | probe->index = index; | |
61 | probe->type = type; | |
62 | probe->enabled = enabled; | |
63 | if (name) | |
64 | probe->name = g_strdup(name); | |
65 | ||
66 | return probe; | |
67 | } | |
68 | ||
69 | /** | |
70 | * Set the name of the specified probe in the specified device. | |
71 | * | |
72 | * If the probe already has a different name assigned to it, it will be | |
73 | * removed, and the new name will be saved instead. | |
74 | * | |
75 | * @param sdi The device instance the probe is connected to. | |
76 | * @param probenum The number of the probe whose name to set. | |
77 | * Note that the probe numbers start at 0. | |
78 | * @param name The new name that the specified probe should get. A copy | |
79 | * of the string is made. | |
80 | * | |
81 | * @return SR_OK on success, or SR_ERR_ARG on invalid arguments. | |
82 | * | |
83 | * @since 0.1.0 (but the API changed in 0.2.0) | |
84 | */ | |
85 | SR_API int sr_dev_probe_name_set(const struct sr_dev_inst *sdi, | |
86 | int probenum, const char *name) | |
87 | { | |
88 | GSList *l; | |
89 | struct sr_probe *probe; | |
90 | int ret; | |
91 | ||
92 | if (!sdi) { | |
93 | sr_err("%s: sdi was NULL", __func__); | |
94 | return SR_ERR_ARG; | |
95 | } | |
96 | ||
97 | ret = SR_ERR_ARG; | |
98 | for (l = sdi->probes; l; l = l->next) { | |
99 | probe = l->data; | |
100 | if (probe->index == probenum) { | |
101 | g_free(probe->name); | |
102 | probe->name = g_strdup(name); | |
103 | ret = SR_OK; | |
104 | break; | |
105 | } | |
106 | } | |
107 | ||
108 | return ret; | |
109 | } | |
110 | ||
111 | /** | |
112 | * Enable or disable a probe on the specified device. | |
113 | * | |
114 | * @param sdi The device instance the probe is connected to. | |
115 | * @param probenum The probe number, starting from 0. | |
116 | * @param state TRUE to enable the probe, FALSE to disable. | |
117 | * | |
118 | * @return SR_OK on success, or SR_ERR_ARG on invalid arguments. | |
119 | * | |
120 | * @since 0.2.0 | |
121 | */ | |
122 | SR_API int sr_dev_probe_enable(const struct sr_dev_inst *sdi, int probenum, | |
123 | gboolean state) | |
124 | { | |
125 | GSList *l; | |
126 | struct sr_probe *probe; | |
127 | int ret; | |
128 | ||
129 | if (!sdi) | |
130 | return SR_ERR_ARG; | |
131 | ||
132 | ret = SR_ERR_ARG; | |
133 | for (l = sdi->probes; l; l = l->next) { | |
134 | probe = l->data; | |
135 | if (probe->index == probenum) { | |
136 | probe->enabled = state; | |
137 | ret = SR_OK; | |
138 | break; | |
139 | } | |
140 | } | |
141 | ||
142 | return ret; | |
143 | } | |
144 | ||
145 | /** | |
146 | * Add a trigger to the specified device (and the specified probe). | |
147 | * | |
148 | * If the specified probe of this device already has a trigger, it will | |
149 | * be silently replaced. | |
150 | * | |
151 | * @param sdi Must not be NULL. | |
152 | * @param probenum The probe number, starting from 0. | |
153 | * @param trigger Trigger string, in the format used by sigrok-cli | |
154 | * | |
155 | * @return SR_OK on success, or SR_ERR_ARG on invalid arguments. | |
156 | * | |
157 | * @since 0.1.0 (but the API changed in 0.2.0) | |
158 | */ | |
159 | SR_API int sr_dev_trigger_set(const struct sr_dev_inst *sdi, int probenum, | |
160 | const char *trigger) | |
161 | { | |
162 | GSList *l; | |
163 | struct sr_probe *probe; | |
164 | int ret; | |
165 | ||
166 | if (!sdi) | |
167 | return SR_ERR_ARG; | |
168 | ||
169 | ret = SR_ERR_ARG; | |
170 | for (l = sdi->probes; l; l = l->next) { | |
171 | probe = l->data; | |
172 | if (probe->index == probenum) { | |
173 | /* If the probe already has a trigger, kill it first. */ | |
174 | g_free(probe->trigger); | |
175 | probe->trigger = g_strdup(trigger); | |
176 | ret = SR_OK; | |
177 | break; | |
178 | } | |
179 | } | |
180 | ||
181 | return ret; | |
182 | } | |
183 | ||
184 | /** | |
185 | * Determine whether the specified device instance has the specified | |
186 | * capability. | |
187 | * | |
188 | * @param sdi Pointer to the device instance to be checked. Must not be NULL. | |
189 | * If the device's 'driver' field is NULL (virtual device), this | |
190 | * function will always return FALSE (virtual devices don't have | |
191 | * a hardware capabilities list). | |
192 | * @param key The option that should be checked for support on the | |
193 | * specified device. | |
194 | * | |
195 | * @return TRUE if the device has the specified option, FALSE otherwise. | |
196 | * FALSE is also returned on invalid input parameters or other | |
197 | * error conditions. | |
198 | * | |
199 | * @since 0.1.0 (but the API changed in 0.2.0) | |
200 | */ | |
201 | SR_API gboolean sr_dev_has_option(const struct sr_dev_inst *sdi, int key) | |
202 | { | |
203 | GVariant *gvar; | |
204 | const int *devopts; | |
205 | gsize num_opts, i; | |
206 | int ret; | |
207 | ||
208 | if (!sdi || !sdi->driver || !sdi->driver->config_list) | |
209 | return FALSE; | |
210 | ||
211 | if (sdi->driver->config_list(SR_CONF_DEVICE_OPTIONS, &gvar, NULL) != SR_OK) | |
212 | return FALSE; | |
213 | ||
214 | ret = FALSE; | |
215 | devopts = g_variant_get_fixed_array(gvar, &num_opts, sizeof(int32_t)); | |
216 | for (i = 0; i < num_opts; i++) { | |
217 | if (devopts[i] == key) { | |
218 | ret = TRUE; | |
219 | break; | |
220 | } | |
221 | } | |
222 | g_variant_unref(gvar); | |
223 | ||
224 | return ret; | |
225 | } | |
226 | ||
227 | /** @private */ | |
228 | SR_PRIV struct sr_dev_inst *sr_dev_inst_new(int index, int status, | |
229 | const char *vendor, const char *model, const char *version) | |
230 | { | |
231 | struct sr_dev_inst *sdi; | |
232 | ||
233 | if (!(sdi = g_try_malloc(sizeof(struct sr_dev_inst)))) { | |
234 | sr_err("Device instance malloc failed."); | |
235 | return NULL; | |
236 | } | |
237 | ||
238 | sdi->driver = NULL; | |
239 | sdi->index = index; | |
240 | sdi->status = status; | |
241 | sdi->inst_type = -1; | |
242 | sdi->vendor = vendor ? g_strdup(vendor) : NULL; | |
243 | sdi->model = model ? g_strdup(model) : NULL; | |
244 | sdi->version = version ? g_strdup(version) : NULL; | |
245 | sdi->probes = NULL; | |
246 | sdi->conn = NULL; | |
247 | sdi->priv = NULL; | |
248 | ||
249 | return sdi; | |
250 | } | |
251 | ||
252 | /** @private */ | |
253 | SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi) | |
254 | { | |
255 | struct sr_probe *probe; | |
256 | GSList *l; | |
257 | ||
258 | for (l = sdi->probes; l; l = l->next) { | |
259 | probe = l->data; | |
260 | g_free(probe->name); | |
261 | g_free(probe->trigger); | |
262 | g_free(probe); | |
263 | } | |
264 | g_slist_free(sdi->probes); | |
265 | ||
266 | g_free(sdi->vendor); | |
267 | g_free(sdi->model); | |
268 | g_free(sdi->version); | |
269 | g_free(sdi); | |
270 | } | |
271 | ||
272 | #ifdef HAVE_LIBUSB_1_0 | |
273 | ||
274 | /** @private */ | |
275 | SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus, | |
276 | uint8_t address, struct libusb_device_handle *hdl) | |
277 | { | |
278 | struct sr_usb_dev_inst *udi; | |
279 | ||
280 | if (!(udi = g_try_malloc(sizeof(struct sr_usb_dev_inst)))) { | |
281 | sr_err("USB device instance malloc failed."); | |
282 | return NULL; | |
283 | } | |
284 | ||
285 | udi->bus = bus; | |
286 | udi->address = address; | |
287 | udi->devhdl = hdl; | |
288 | ||
289 | return udi; | |
290 | } | |
291 | ||
292 | /** @private */ | |
293 | SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb) | |
294 | { | |
295 | g_free(usb); | |
296 | } | |
297 | ||
298 | #endif | |
299 | ||
300 | /** | |
301 | * @private | |
302 | * | |
303 | * Both parameters are copied to newly allocated strings, and freed | |
304 | * automatically by sr_serial_dev_inst_free(). | |
305 | * | |
306 | * @param pathname OS-specific serial port specification. Examples: | |
307 | * "/dev/ttyUSB0", "/dev/ttyACM1", "/dev/tty.Modem-0", "COM1". | |
308 | * @param serialcomm A serial communication parameters string, in the form | |
309 | * of <speed>/<data bits><parity><stopbits>, for example | |
310 | * "9600/8n1" or "600/7o2". This is an optional parameter; | |
311 | * it may be filled in later. | |
312 | * | |
313 | * @return A pointer to a newly initialized struct sr_serial_dev_inst, | |
314 | * or NULL on error. | |
315 | */ | |
316 | SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port, | |
317 | const char *serialcomm) | |
318 | { | |
319 | struct sr_serial_dev_inst *serial; | |
320 | ||
321 | if (!port) { | |
322 | sr_err("Serial port required."); | |
323 | return NULL; | |
324 | } | |
325 | ||
326 | if (!(serial = g_try_malloc0(sizeof(struct sr_serial_dev_inst)))) { | |
327 | sr_err("Serial device instance malloc failed."); | |
328 | return NULL; | |
329 | } | |
330 | ||
331 | serial->port = g_strdup(port); | |
332 | if (serialcomm) | |
333 | serial->serialcomm = g_strdup(serialcomm); | |
334 | serial->fd = -1; | |
335 | ||
336 | return serial; | |
337 | } | |
338 | ||
339 | /** @private */ | |
340 | SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial) | |
341 | { | |
342 | g_free(serial->port); | |
343 | g_free(serial->serialcomm); | |
344 | g_free(serial); | |
345 | } | |
346 | ||
347 | /** | |
348 | * Get the list of devices/instances of the specified driver. | |
349 | * | |
350 | * @param driver The driver to use. Must not be NULL. | |
351 | * | |
352 | * @return The list of devices/instances of this driver, or NULL upon errors | |
353 | * or if the list is empty. | |
354 | * | |
355 | * @since 0.1.0 (but the API changed in 0.2.0) | |
356 | */ | |
357 | SR_API GSList *sr_dev_list(const struct sr_dev_driver *driver) | |
358 | { | |
359 | if (driver && driver->dev_list) | |
360 | return driver->dev_list(); | |
361 | else | |
362 | return NULL; | |
363 | } | |
364 | ||
365 | /** | |
366 | * Clear all devices/instances of the specified driver. | |
367 | * | |
368 | * @param driver The driver to use. Must not be NULL. | |
369 | * | |
370 | * @return SR_OK upon success, a negative error code upon errors. | |
371 | * | |
372 | * @since 0.2.0 | |
373 | */ | |
374 | SR_API int sr_dev_clear(const struct sr_dev_driver *driver) | |
375 | { | |
376 | if (driver && driver->dev_clear) | |
377 | return driver->dev_clear(); | |
378 | else | |
379 | return SR_OK; | |
380 | } | |
381 | ||
382 | /** | |
383 | * Open the specified device. | |
384 | * | |
385 | * @param sdi Device instance to use. Must not be NULL. | |
386 | * | |
387 | * @return SR_OK upon success, a negative error code upon errors. | |
388 | * | |
389 | * @since 0.2.0 | |
390 | */ | |
391 | SR_API int sr_dev_open(struct sr_dev_inst *sdi) | |
392 | { | |
393 | int ret; | |
394 | ||
395 | if (!sdi || !sdi->driver || !sdi->driver->dev_open) | |
396 | return SR_ERR; | |
397 | ||
398 | ret = sdi->driver->dev_open(sdi); | |
399 | ||
400 | return ret; | |
401 | } | |
402 | ||
403 | /** | |
404 | * Close the specified device. | |
405 | * | |
406 | * @param sdi Device instance to use. Must not be NULL. | |
407 | * | |
408 | * @return SR_OK upon success, a negative error code upon errors. | |
409 | * | |
410 | * @since 0.2.0 | |
411 | */ | |
412 | SR_API int sr_dev_close(struct sr_dev_inst *sdi) | |
413 | { | |
414 | int ret; | |
415 | ||
416 | if (!sdi || !sdi->driver || !sdi->driver->dev_close) | |
417 | return SR_ERR; | |
418 | ||
419 | ret = sdi->driver->dev_close(sdi); | |
420 | ||
421 | return ret; | |
422 | } | |
423 | ||
424 | /** @} */ |