]>
Commit | Line | Data |
---|---|---|
7b9d7320 DJ |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.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 "libsigrok.h" | |
21 | #include "libsigrok-internal.h" | |
22 | ||
23 | #include <glib.h> | |
24 | #include <string.h> | |
25 | ||
3544f848 | 26 | #define LOG_PREFIX "scpi" |
7b9d7320 DJ |
27 | |
28 | #define SCPI_READ_RETRIES 100 | |
29 | #define SCPI_READ_RETRY_TIMEOUT 10000 | |
30 | ||
aa1e3b40 DJ |
31 | /** |
32 | * Parse a string representation of a boolean-like value into a gboolean. | |
33 | * Similar to sr_parse_boolstring but rejects strings which do not represent | |
34 | * a boolean-like value. | |
35 | * | |
36 | * @param str String to convert. | |
37 | * @param ret Pointer to a gboolean where the result of the conversion will be | |
38 | * stored. | |
39 | * | |
40 | * @return SR_OK on success, SR_ERR on failure. | |
41 | */ | |
d5976d8b | 42 | static int parse_strict_bool(const char *str, gboolean *ret) |
aa1e3b40 DJ |
43 | { |
44 | if (!str) | |
45 | return SR_ERR_ARG; | |
46 | ||
47 | if (!g_strcmp0(str, "1") || | |
48 | !g_ascii_strncasecmp(str, "y", 1) || | |
49 | !g_ascii_strncasecmp(str, "t", 1) || | |
50 | !g_ascii_strncasecmp(str, "yes", 3) || | |
51 | !g_ascii_strncasecmp(str, "true", 4) || | |
52 | !g_ascii_strncasecmp(str, "on", 2)) { | |
aa1e3b40 DJ |
53 | *ret = TRUE; |
54 | return SR_OK; | |
aa1e3b40 DJ |
55 | } else if (!g_strcmp0(str, "0") || |
56 | !g_ascii_strncasecmp(str, "n", 1) || | |
57 | !g_ascii_strncasecmp(str, "f", 1) || | |
58 | !g_ascii_strncasecmp(str, "no", 2) || | |
59 | !g_ascii_strncasecmp(str, "false", 5) || | |
60 | !g_ascii_strncasecmp(str, "off", 3)) { | |
aa1e3b40 DJ |
61 | *ret = FALSE; |
62 | return SR_OK; | |
63 | } | |
64 | ||
65 | return SR_ERR; | |
66 | } | |
67 | ||
23f43dff ML |
68 | /** |
69 | * Open SCPI device. | |
70 | * | |
71 | * @param scpi Previously initialized SCPI device structure. | |
72 | * | |
73 | * @return SR_OK on success, SR_ERR on failure. | |
74 | */ | |
75 | SR_PRIV int sr_scpi_open(struct sr_scpi_dev_inst *scpi) | |
76 | { | |
77 | return scpi->open(scpi->priv); | |
78 | } | |
79 | ||
80 | /** | |
81 | * Add an event source for an SCPI device. | |
82 | * | |
83 | * @param scpi Previously initialized SCPI device structure. | |
84 | * @param events Events to check for. | |
85 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
86 | * @param cb Callback function to add. Must not be NULL. | |
87 | * @param cb_data Data for the callback function. Can be NULL. | |
88 | * | |
89 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
90 | * SR_ERR_MALLOC upon memory allocation errors. | |
91 | */ | |
92 | SR_PRIV int sr_scpi_source_add(struct sr_scpi_dev_inst *scpi, int events, | |
93 | int timeout, sr_receive_data_callback_t cb, void *cb_data) | |
94 | { | |
95 | return scpi->source_add(scpi->priv, events, timeout, cb, cb_data); | |
96 | } | |
97 | ||
98 | /** | |
99 | * Remove event source for an SCPI device. | |
100 | * | |
101 | * @param scpi Previously initialized SCPI device structure. | |
102 | * | |
103 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
104 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
105 | * internal errors. | |
106 | */ | |
107 | SR_PRIV int sr_scpi_source_remove(struct sr_scpi_dev_inst *scpi) | |
108 | { | |
109 | return scpi->source_remove(scpi->priv); | |
110 | } | |
111 | ||
7b9d7320 DJ |
112 | /** |
113 | * Send a SCPI command. | |
114 | * | |
23f43dff | 115 | * @param scpi Previously initialized SCPI device structure. |
504f40a5 | 116 | * @param format Format string, to be followed by any necessary arguments. |
7b9d7320 DJ |
117 | * |
118 | * @return SR_OK on success, SR_ERR on failure. | |
119 | */ | |
23f43dff | 120 | SR_PRIV int sr_scpi_send(struct sr_scpi_dev_inst *scpi, |
504f40a5 | 121 | const char *format, ...) |
7b9d7320 | 122 | { |
87c41083 ML |
123 | va_list args; |
124 | int ret; | |
125 | ||
126 | va_start(args, format); | |
127 | ret = sr_scpi_send_variadic(scpi, format, args); | |
128 | va_end(args); | |
129 | ||
130 | return ret; | |
131 | } | |
132 | ||
133 | /** | |
134 | * Send a SCPI command with a variadic argument list. | |
135 | * | |
136 | * @param scpi Previously initialized SCPI device structure. | |
137 | * @param format Format string. | |
138 | * @param args Argument list. | |
139 | * | |
140 | * @return SR_OK on success, SR_ERR on failure. | |
141 | */ | |
142 | SR_PRIV int sr_scpi_send_variadic(struct sr_scpi_dev_inst *scpi, | |
143 | const char *format, va_list args) | |
144 | { | |
145 | va_list args_copy; | |
504f40a5 ML |
146 | char *buf; |
147 | int len, ret; | |
148 | ||
504f40a5 | 149 | /* Get length of buffer required. */ |
87c41083 ML |
150 | va_copy(args_copy, args); |
151 | len = vsnprintf(NULL, 0, format, args_copy); | |
152 | va_end(args_copy); | |
504f40a5 ML |
153 | |
154 | /* Allocate buffer and write out command. */ | |
155 | buf = g_malloc(len + 1); | |
87c41083 | 156 | vsprintf(buf, format, args); |
504f40a5 ML |
157 | |
158 | /* Send command. */ | |
159 | ret = scpi->send(scpi->priv, buf); | |
160 | ||
161 | /* Free command buffer. */ | |
162 | g_free(buf); | |
163 | ||
164 | return ret; | |
23f43dff | 165 | } |
7b9d7320 | 166 | |
23f43dff ML |
167 | /** |
168 | * Receive an SCPI reply and store the reply in scpi_response. | |
169 | * | |
170 | * @param scpi Previously initialised SCPI device structure. | |
171 | * @param scpi_response Pointer where to store the SCPI response. | |
172 | * | |
173 | * @return SR_OK upon fetching a full SCPI response, SR_ERR upon fetching an | |
174 | * incomplete or no response. The allocated response must be freed by | |
175 | * the caller in the case of a full response as well in the case of | |
176 | * an incomplete. | |
177 | */ | |
178 | SR_PRIV int sr_scpi_receive(struct sr_scpi_dev_inst *scpi, | |
179 | char **scpi_response) | |
180 | { | |
181 | return scpi->receive(scpi->priv, scpi_response); | |
182 | } | |
7b9d7320 | 183 | |
a1ff9c18 ML |
184 | /** |
185 | * Read part of a response from SCPI device. | |
186 | * | |
187 | * @param scpi Previously initialised SCPI device structure. | |
188 | * @param buf Buffer to store result. | |
189 | * @param maxlen Maximum number of bytes to read. | |
190 | * | |
191 | * @return Number of bytes read, or SR_ERR upon failure. | |
192 | */ | |
193 | SR_PRIV int sr_scpi_read(struct sr_scpi_dev_inst *scpi, | |
194 | char *buf, int maxlen) | |
195 | { | |
196 | return scpi->read(scpi->priv, buf, maxlen); | |
197 | } | |
198 | ||
23f43dff ML |
199 | /** |
200 | * Close SCPI device. | |
201 | * | |
202 | * @param scpi Previously initialized SCPI device structure. | |
203 | * | |
204 | * @return SR_OK on success, SR_ERR on failure. | |
205 | */ | |
206 | SR_PRIV int sr_scpi_close(struct sr_scpi_dev_inst *scpi) | |
207 | { | |
208 | return scpi->close(scpi->priv); | |
209 | } | |
7b9d7320 | 210 | |
23f43dff ML |
211 | /** |
212 | * Free SCPI device. | |
213 | * | |
214 | * @param scpi Previously initialized SCPI device structure. | |
215 | * | |
216 | * @return SR_OK on success, SR_ERR on failure. | |
217 | */ | |
218 | SR_PRIV void sr_scpi_free(struct sr_scpi_dev_inst *scpi) | |
219 | { | |
220 | scpi->free(scpi->priv); | |
221 | g_free(scpi); | |
7b9d7320 DJ |
222 | } |
223 | ||
224 | /** | |
225 | * Send a SCPI command, receive the reply and store the reply in scpi_response. | |
226 | * | |
23f43dff | 227 | * @param scpi Previously initialised SCPI device structure. |
7b9d7320 | 228 | * @param command The SCPI command to send to the device (can be NULL). |
d5976d8b | 229 | * @param scpi_response Pointer where to store the SCPI response. |
7b9d7320 | 230 | * |
d5976d8b UH |
231 | * @return SR_OK upon fetching a full SCPI response, SR_ERR upon fetching an |
232 | * incomplete or no response. The allocated response must be freed by | |
233 | * the caller in the case of a full response as well in the case of | |
234 | * an incomplete. | |
7b9d7320 | 235 | */ |
23f43dff | 236 | SR_PRIV int sr_scpi_get_string(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 237 | const char *command, char **scpi_response) |
7b9d7320 | 238 | { |
7b9d7320 | 239 | if (command) |
23f43dff | 240 | if (sr_scpi_send(scpi, command) != SR_OK) |
7b9d7320 DJ |
241 | return SR_ERR; |
242 | ||
23f43dff | 243 | return sr_scpi_receive(scpi, scpi_response); |
d730f70e DJ |
244 | } |
245 | ||
246 | /** | |
247 | * Send a SCPI command, read the reply, parse it as a bool value and store the | |
248 | * result in scpi_response. | |
249 | * | |
23f43dff | 250 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
251 | * @param command The SCPI command to send to the device (can be NULL). |
252 | * @param scpi_response Pointer where to store the parsed result. | |
253 | * | |
254 | * @return SR_OK on success, SR_ERR on failure. | |
255 | */ | |
23f43dff | 256 | SR_PRIV int sr_scpi_get_bool(struct sr_scpi_dev_inst *scpi, |
d730f70e DJ |
257 | const char *command, gboolean *scpi_response) |
258 | { | |
259 | int ret; | |
260 | char *response; | |
261 | ||
262 | response = NULL; | |
263 | ||
23f43dff | 264 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
265 | if (!response) |
266 | return SR_ERR; | |
267 | ||
d5976d8b | 268 | if (parse_strict_bool(response, scpi_response) == SR_OK) |
d730f70e DJ |
269 | ret = SR_OK; |
270 | else | |
271 | ret = SR_ERR; | |
272 | ||
273 | g_free(response); | |
274 | ||
275 | return ret; | |
276 | } | |
277 | ||
278 | /** | |
279 | * Send a SCPI command, read the reply, parse it as an integer and store the | |
280 | * result in scpi_response. | |
281 | * | |
23f43dff | 282 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
283 | * @param command The SCPI command to send to the device (can be NULL). |
284 | * @param scpi_response Pointer where to store the parsed result. | |
285 | * | |
286 | * @return SR_OK on success, SR_ERR on failure. | |
287 | */ | |
23f43dff | 288 | SR_PRIV int sr_scpi_get_int(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 289 | const char *command, int *scpi_response) |
d730f70e DJ |
290 | { |
291 | int ret; | |
292 | char *response; | |
293 | ||
294 | response = NULL; | |
295 | ||
23f43dff | 296 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
297 | if (!response) |
298 | return SR_ERR; | |
299 | ||
300 | if (sr_atoi(response, scpi_response) == SR_OK) | |
301 | ret = SR_OK; | |
302 | else | |
303 | ret = SR_ERR; | |
304 | ||
305 | g_free(response); | |
306 | ||
307 | return ret; | |
308 | } | |
309 | ||
310 | /** | |
311 | * Send a SCPI command, read the reply, parse it as a float and store the | |
312 | * result in scpi_response. | |
313 | * | |
23f43dff | 314 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
315 | * @param command The SCPI command to send to the device (can be NULL). |
316 | * @param scpi_response Pointer where to store the parsed result. | |
317 | * | |
318 | * @return SR_OK on success, SR_ERR on failure. | |
319 | */ | |
23f43dff | 320 | SR_PRIV int sr_scpi_get_float(struct sr_scpi_dev_inst *scpi, |
d730f70e DJ |
321 | const char *command, float *scpi_response) |
322 | { | |
323 | int ret; | |
324 | char *response; | |
325 | ||
326 | response = NULL; | |
327 | ||
23f43dff | 328 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
329 | if (!response) |
330 | return SR_ERR; | |
331 | ||
332 | if (sr_atof(response, scpi_response) == SR_OK) | |
333 | ret = SR_OK; | |
334 | else | |
335 | ret = SR_ERR; | |
336 | ||
337 | g_free(response); | |
338 | ||
339 | return ret; | |
340 | } | |
341 | ||
342 | /** | |
343 | * Send a SCPI command, read the reply, parse it as a double and store the | |
344 | * result in scpi_response. | |
345 | * | |
23f43dff | 346 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
347 | * @param command The SCPI command to send to the device (can be NULL). |
348 | * @param scpi_response Pointer where to store the parsed result. | |
349 | * | |
350 | * @return SR_OK on success, SR_ERR on failure. | |
351 | */ | |
23f43dff | 352 | SR_PRIV int sr_scpi_get_double(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 353 | const char *command, double *scpi_response) |
d730f70e DJ |
354 | { |
355 | int ret; | |
356 | char *response; | |
357 | ||
358 | response = NULL; | |
359 | ||
23f43dff | 360 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
361 | if (!response) |
362 | return SR_ERR; | |
363 | ||
364 | if (sr_atod(response, scpi_response) == SR_OK) | |
365 | ret = SR_OK; | |
366 | else | |
367 | ret = SR_ERR; | |
368 | ||
369 | g_free(response); | |
370 | ||
7b9d7320 DJ |
371 | return ret; |
372 | } | |
373 | ||
f5922ade DJ |
374 | /** |
375 | * Send a SCPI *OPC? command, read the reply and return the result of the | |
376 | * command. | |
377 | * | |
23f43dff | 378 | * @param scpi Previously initialised SCPI device structure. |
f5922ade DJ |
379 | * |
380 | * @return SR_OK on success, SR_ERR on failure. | |
381 | */ | |
23f43dff | 382 | SR_PRIV int sr_scpi_get_opc(struct sr_scpi_dev_inst *scpi) |
f5922ade DJ |
383 | { |
384 | unsigned int i; | |
385 | gboolean opc; | |
386 | ||
387 | for (i = 0; i < SCPI_READ_RETRIES; ++i) { | |
23f43dff | 388 | sr_scpi_get_bool(scpi, SCPI_CMD_OPC, &opc); |
f5922ade DJ |
389 | if (opc) |
390 | return SR_OK; | |
f5922ade DJ |
391 | g_usleep(SCPI_READ_RETRY_TIMEOUT); |
392 | } | |
393 | ||
394 | return SR_ERR; | |
395 | } | |
396 | ||
8acbb89a DJ |
397 | /** |
398 | * Send a SCPI command, read the reply, parse it as comma separated list of | |
399 | * floats and store the as an result in scpi_response. | |
400 | * | |
23f43dff | 401 | * @param scpi Previously initialised SCPI device structure. |
8acbb89a DJ |
402 | * @param command The SCPI command to send to the device (can be NULL). |
403 | * @param scpi_response Pointer where to store the parsed result. | |
404 | * | |
405 | * @return SR_OK upon successfully parsing all values, SR_ERR upon a parsing | |
d5976d8b UH |
406 | * error or upon no response. The allocated response must be freed by |
407 | * the caller in the case of an SR_OK as well as in the case of | |
408 | * parsing error. | |
8acbb89a | 409 | */ |
23f43dff | 410 | SR_PRIV int sr_scpi_get_floatv(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 411 | const char *command, GArray **scpi_response) |
8acbb89a DJ |
412 | { |
413 | int ret; | |
414 | float tmp; | |
415 | char *response; | |
d5976d8b | 416 | gchar **ptr, **tokens; |
8acbb89a DJ |
417 | GArray *response_array; |
418 | ||
419 | ret = SR_OK; | |
420 | response = NULL; | |
421 | tokens = NULL; | |
422 | ||
23f43dff | 423 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
8acbb89a DJ |
424 | if (!response) |
425 | return SR_ERR; | |
426 | ||
427 | tokens = g_strsplit(response, ",", 0); | |
428 | ptr = tokens; | |
429 | ||
430 | response_array = g_array_sized_new(TRUE, FALSE, sizeof(float), 256); | |
431 | ||
d5976d8b | 432 | while (*ptr) { |
8acbb89a DJ |
433 | if (sr_atof(*ptr, &tmp) == SR_OK) |
434 | response_array = g_array_append_val(response_array, | |
435 | tmp); | |
436 | else | |
437 | ret = SR_ERR; | |
438 | ||
439 | ptr++; | |
440 | } | |
441 | g_strfreev(tokens); | |
442 | g_free(response); | |
443 | ||
444 | if (ret == SR_ERR && response_array->len == 0) { | |
445 | g_array_free(response_array, TRUE); | |
446 | *scpi_response = NULL; | |
447 | return SR_ERR; | |
448 | } | |
449 | ||
450 | *scpi_response = response_array; | |
451 | ||
1a323dd8 DJ |
452 | return ret; |
453 | } | |
454 | ||
455 | /** | |
456 | * Send a SCPI command, read the reply, parse it as comma separated list of | |
457 | * unsigned 8 bit integers and store the as an result in scpi_response. | |
458 | * | |
23f43dff | 459 | * @param scpi Previously initialised SCPI device structure. |
1a323dd8 DJ |
460 | * @param command The SCPI command to send to the device (can be NULL). |
461 | * @param scpi_response Pointer where to store the parsed result. | |
462 | * | |
463 | * @return SR_OK upon successfully parsing all values, SR_ERR upon a parsing | |
d5976d8b UH |
464 | * error or upon no response. The allocated response must be freed by |
465 | * the caller in the case of an SR_OK as well as in the case of | |
466 | * parsing error. | |
1a323dd8 | 467 | */ |
23f43dff | 468 | SR_PRIV int sr_scpi_get_uint8v(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 469 | const char *command, GArray **scpi_response) |
1a323dd8 | 470 | { |
d5976d8b | 471 | int tmp, ret; |
1a323dd8 | 472 | char *response; |
d5976d8b | 473 | gchar **ptr, **tokens; |
1a323dd8 DJ |
474 | GArray *response_array; |
475 | ||
476 | ret = SR_OK; | |
477 | response = NULL; | |
478 | tokens = NULL; | |
479 | ||
23f43dff | 480 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
1a323dd8 DJ |
481 | if (!response) |
482 | return SR_ERR; | |
483 | ||
484 | tokens = g_strsplit(response, ",", 0); | |
485 | ptr = tokens; | |
486 | ||
487 | response_array = g_array_sized_new(TRUE, FALSE, sizeof(uint8_t), 256); | |
488 | ||
d5976d8b | 489 | while (*ptr) { |
1a323dd8 DJ |
490 | if (sr_atoi(*ptr, &tmp) == SR_OK) |
491 | response_array = g_array_append_val(response_array, | |
492 | tmp); | |
493 | else | |
494 | ret = SR_ERR; | |
495 | ||
496 | ptr++; | |
497 | } | |
498 | g_strfreev(tokens); | |
499 | g_free(response); | |
500 | ||
501 | if (response_array->len == 0) { | |
502 | g_array_free(response_array, TRUE); | |
503 | *scpi_response = NULL; | |
504 | return SR_ERR; | |
505 | } | |
506 | ||
507 | *scpi_response = response_array; | |
508 | ||
8acbb89a DJ |
509 | return ret; |
510 | } | |
511 | ||
7b9d7320 DJ |
512 | /** |
513 | * Send the *IDN? SCPI command, receive the reply, parse it and store the | |
514 | * reply as a sr_scpi_hw_info structure in the supplied scpi_response pointer. | |
515 | * | |
d5976d8b UH |
516 | * The hw_info structure must be freed by the caller via sr_scpi_hw_info_free(). |
517 | * | |
23f43dff | 518 | * @param scpi Previously initialised SCPI device structure. |
7b9d7320 DJ |
519 | * @param scpi_response Pointer where to store the hw_info structure. |
520 | * | |
521 | * @return SR_OK upon success, SR_ERR on failure. | |
7b9d7320 | 522 | */ |
23f43dff | 523 | SR_PRIV int sr_scpi_get_hw_id(struct sr_scpi_dev_inst *scpi, |
7b9d7320 DJ |
524 | struct sr_scpi_hw_info **scpi_response) |
525 | { | |
526 | int num_tokens; | |
527 | char *response; | |
528 | gchar **tokens; | |
7b9d7320 DJ |
529 | struct sr_scpi_hw_info *hw_info; |
530 | ||
531 | response = NULL; | |
532 | tokens = NULL; | |
533 | ||
23f43dff | 534 | if (sr_scpi_get_string(scpi, SCPI_CMD_IDN, &response) != SR_OK) |
7b9d7320 DJ |
535 | if (!response) |
536 | return SR_ERR; | |
537 | ||
77c16c04 ML |
538 | sr_info("Got IDN string: '%s'", response); |
539 | ||
7b9d7320 DJ |
540 | /* |
541 | * The response to a '*IDN?' is specified by the SCPI spec. It contains | |
542 | * a comma-separated list containing the manufacturer name, instrument | |
543 | * model, serial number of the instrument and the firmware version. | |
544 | */ | |
545 | tokens = g_strsplit(response, ",", 0); | |
546 | ||
547 | for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++); | |
548 | ||
549 | if (num_tokens != 4) { | |
d5976d8b | 550 | sr_dbg("IDN response not according to spec: %80.s.", response); |
7b9d7320 DJ |
551 | g_strfreev(tokens); |
552 | g_free(response); | |
553 | return SR_ERR; | |
554 | } | |
555 | g_free(response); | |
556 | ||
557 | hw_info = g_try_malloc(sizeof(struct sr_scpi_hw_info)); | |
558 | if (!hw_info) { | |
559 | g_strfreev(tokens); | |
560 | return SR_ERR_MALLOC; | |
561 | } | |
562 | ||
563 | hw_info->manufacturer = g_strdup(tokens[0]); | |
564 | hw_info->model = g_strdup(tokens[1]); | |
565 | hw_info->serial_number = g_strdup(tokens[2]); | |
566 | hw_info->firmware_version = g_strdup(tokens[3]); | |
567 | ||
568 | g_strfreev(tokens); | |
569 | ||
570 | *scpi_response = hw_info; | |
571 | ||
572 | return SR_OK; | |
573 | } | |
574 | ||
575 | /** | |
576 | * Free a sr_scpi_hw_info struct. | |
577 | * | |
578 | * @param hw_info Pointer to the struct to free. | |
579 | * | |
580 | * This function is safe to call with a NULL pointer. | |
581 | */ | |
582 | SR_PRIV void sr_scpi_hw_info_free(struct sr_scpi_hw_info *hw_info) | |
583 | { | |
584 | if (hw_info) { | |
585 | g_free(hw_info->manufacturer); | |
586 | g_free(hw_info->model); | |
587 | g_free(hw_info->serial_number); | |
588 | g_free(hw_info->firmware_version); | |
589 | g_free(hw_info); | |
590 | } | |
591 | } |