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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 | ||
f754c146 AJ |
68 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_serial_dev; |
69 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_tcp_dev; | |
70 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_usbtmc_dev; | |
71 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_vxi_dev; | |
72 | ||
73 | static const struct sr_scpi_dev_inst *scpi_devs[] = { | |
74 | &scpi_tcp_dev, | |
75 | &scpi_usbtmc_dev, | |
76 | #ifdef HAVE_RPC | |
77 | &scpi_vxi_dev, | |
78 | #endif | |
79 | #ifdef HAVE_LIBSERIALPORT | |
80 | &scpi_serial_dev, /* must be last as it matches any resource */ | |
81 | #endif | |
82 | }; | |
83 | ||
c3515cea AJ |
84 | SR_PRIV struct sr_scpi_dev_inst *scpi_dev_inst_new(const char *resource, |
85 | const char *serialcomm) | |
86 | { | |
87 | struct sr_scpi_dev_inst *scpi = NULL; | |
f754c146 AJ |
88 | const struct sr_scpi_dev_inst *scpi_dev; |
89 | gchar **params; | |
90 | unsigned i; | |
c3515cea | 91 | |
f754c146 AJ |
92 | for (i = 0; i < ARRAY_SIZE(scpi_devs); i++) { |
93 | scpi_dev = scpi_devs[i]; | |
94 | if (!strncmp(resource, scpi_dev->prefix, strlen(scpi_dev->prefix))) { | |
95 | sr_dbg("Opening %s device %s.", scpi_dev->name, resource); | |
96 | scpi = g_malloc(sizeof(*scpi)); | |
97 | *scpi = *scpi_dev; | |
98 | scpi->priv = g_malloc0(scpi->priv_size); | |
99 | params = g_strsplit(resource, "/", 0); | |
100 | if (scpi->dev_inst_new(scpi->priv, resource, | |
101 | params, serialcomm) != SR_OK) { | |
102 | sr_scpi_free(scpi); | |
103 | scpi = NULL; | |
104 | } | |
105 | g_strfreev(params); | |
106 | break; | |
107 | } | |
c3515cea | 108 | } |
f754c146 | 109 | |
c3515cea AJ |
110 | return scpi; |
111 | } | |
112 | ||
23f43dff ML |
113 | /** |
114 | * Open SCPI device. | |
115 | * | |
116 | * @param scpi Previously initialized SCPI device structure. | |
117 | * | |
118 | * @return SR_OK on success, SR_ERR on failure. | |
119 | */ | |
120 | SR_PRIV int sr_scpi_open(struct sr_scpi_dev_inst *scpi) | |
121 | { | |
122 | return scpi->open(scpi->priv); | |
123 | } | |
124 | ||
125 | /** | |
126 | * Add an event source for an SCPI device. | |
127 | * | |
128 | * @param scpi Previously initialized SCPI device structure. | |
129 | * @param events Events to check for. | |
130 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
131 | * @param cb Callback function to add. Must not be NULL. | |
132 | * @param cb_data Data for the callback function. Can be NULL. | |
133 | * | |
134 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
135 | * SR_ERR_MALLOC upon memory allocation errors. | |
136 | */ | |
137 | SR_PRIV int sr_scpi_source_add(struct sr_scpi_dev_inst *scpi, int events, | |
138 | int timeout, sr_receive_data_callback_t cb, void *cb_data) | |
139 | { | |
140 | return scpi->source_add(scpi->priv, events, timeout, cb, cb_data); | |
141 | } | |
142 | ||
143 | /** | |
144 | * Remove event source for an SCPI device. | |
145 | * | |
146 | * @param scpi Previously initialized SCPI device structure. | |
147 | * | |
148 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
149 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
150 | * internal errors. | |
151 | */ | |
152 | SR_PRIV int sr_scpi_source_remove(struct sr_scpi_dev_inst *scpi) | |
153 | { | |
154 | return scpi->source_remove(scpi->priv); | |
155 | } | |
156 | ||
7b9d7320 DJ |
157 | /** |
158 | * Send a SCPI command. | |
159 | * | |
23f43dff | 160 | * @param scpi Previously initialized SCPI device structure. |
504f40a5 | 161 | * @param format Format string, to be followed by any necessary arguments. |
7b9d7320 DJ |
162 | * |
163 | * @return SR_OK on success, SR_ERR on failure. | |
164 | */ | |
23f43dff | 165 | SR_PRIV int sr_scpi_send(struct sr_scpi_dev_inst *scpi, |
504f40a5 | 166 | const char *format, ...) |
7b9d7320 | 167 | { |
87c41083 ML |
168 | va_list args; |
169 | int ret; | |
170 | ||
171 | va_start(args, format); | |
172 | ret = sr_scpi_send_variadic(scpi, format, args); | |
173 | va_end(args); | |
174 | ||
175 | return ret; | |
176 | } | |
177 | ||
178 | /** | |
179 | * Send a SCPI command with a variadic argument list. | |
180 | * | |
181 | * @param scpi Previously initialized SCPI device structure. | |
182 | * @param format Format string. | |
183 | * @param args Argument list. | |
184 | * | |
185 | * @return SR_OK on success, SR_ERR on failure. | |
186 | */ | |
187 | SR_PRIV int sr_scpi_send_variadic(struct sr_scpi_dev_inst *scpi, | |
188 | const char *format, va_list args) | |
189 | { | |
190 | va_list args_copy; | |
504f40a5 ML |
191 | char *buf; |
192 | int len, ret; | |
193 | ||
504f40a5 | 194 | /* Get length of buffer required. */ |
87c41083 ML |
195 | va_copy(args_copy, args); |
196 | len = vsnprintf(NULL, 0, format, args_copy); | |
197 | va_end(args_copy); | |
504f40a5 ML |
198 | |
199 | /* Allocate buffer and write out command. */ | |
200 | buf = g_malloc(len + 1); | |
87c41083 | 201 | vsprintf(buf, format, args); |
504f40a5 ML |
202 | |
203 | /* Send command. */ | |
204 | ret = scpi->send(scpi->priv, buf); | |
205 | ||
206 | /* Free command buffer. */ | |
207 | g_free(buf); | |
208 | ||
209 | return ret; | |
23f43dff | 210 | } |
7b9d7320 | 211 | |
23f43dff | 212 | /** |
05c644ea | 213 | * Begin receiving an SCPI reply. |
23f43dff ML |
214 | * |
215 | * @param scpi Previously initialised SCPI device structure. | |
23f43dff | 216 | * |
05c644ea | 217 | * @return SR_OK on success, SR_ERR on failure. |
23f43dff | 218 | */ |
05c644ea | 219 | SR_PRIV int sr_scpi_read_begin(struct sr_scpi_dev_inst *scpi) |
23f43dff | 220 | { |
05c644ea | 221 | return scpi->read_begin(scpi->priv); |
23f43dff | 222 | } |
7b9d7320 | 223 | |
a1ff9c18 ML |
224 | /** |
225 | * Read part of a response from SCPI device. | |
226 | * | |
227 | * @param scpi Previously initialised SCPI device structure. | |
228 | * @param buf Buffer to store result. | |
229 | * @param maxlen Maximum number of bytes to read. | |
230 | * | |
231 | * @return Number of bytes read, or SR_ERR upon failure. | |
232 | */ | |
05c644ea | 233 | SR_PRIV int sr_scpi_read_data(struct sr_scpi_dev_inst *scpi, |
a1ff9c18 ML |
234 | char *buf, int maxlen) |
235 | { | |
05c644ea ML |
236 | return scpi->read_data(scpi->priv, buf, maxlen); |
237 | } | |
238 | ||
239 | /** | |
240 | * Check whether a complete SCPI response has been received. | |
241 | * | |
242 | * @param scpi Previously initialised SCPI device structure. | |
243 | * | |
244 | * @return 1 if complete, 0 otherwise. | |
245 | */ | |
246 | SR_PRIV int sr_scpi_read_complete(struct sr_scpi_dev_inst *scpi) | |
247 | { | |
248 | return scpi->read_complete(scpi->priv); | |
a1ff9c18 ML |
249 | } |
250 | ||
23f43dff ML |
251 | /** |
252 | * Close SCPI device. | |
253 | * | |
254 | * @param scpi Previously initialized SCPI device structure. | |
255 | * | |
256 | * @return SR_OK on success, SR_ERR on failure. | |
257 | */ | |
258 | SR_PRIV int sr_scpi_close(struct sr_scpi_dev_inst *scpi) | |
259 | { | |
260 | return scpi->close(scpi->priv); | |
261 | } | |
7b9d7320 | 262 | |
23f43dff ML |
263 | /** |
264 | * Free SCPI device. | |
265 | * | |
266 | * @param scpi Previously initialized SCPI device structure. | |
267 | * | |
268 | * @return SR_OK on success, SR_ERR on failure. | |
269 | */ | |
270 | SR_PRIV void sr_scpi_free(struct sr_scpi_dev_inst *scpi) | |
271 | { | |
272 | scpi->free(scpi->priv); | |
f754c146 | 273 | g_free(scpi->priv); |
23f43dff | 274 | g_free(scpi); |
7b9d7320 DJ |
275 | } |
276 | ||
277 | /** | |
278 | * Send a SCPI command, receive the reply and store the reply in scpi_response. | |
279 | * | |
23f43dff | 280 | * @param scpi Previously initialised SCPI device structure. |
7b9d7320 | 281 | * @param command The SCPI command to send to the device (can be NULL). |
d5976d8b | 282 | * @param scpi_response Pointer where to store the SCPI response. |
7b9d7320 | 283 | * |
05c644ea | 284 | * @return SR_OK on success, SR_ERR on failure. |
7b9d7320 | 285 | */ |
23f43dff | 286 | SR_PRIV int sr_scpi_get_string(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 287 | const char *command, char **scpi_response) |
7b9d7320 | 288 | { |
05c644ea ML |
289 | char buf[256]; |
290 | int len; | |
291 | GString *response; | |
292 | ||
7b9d7320 | 293 | if (command) |
23f43dff | 294 | if (sr_scpi_send(scpi, command) != SR_OK) |
7b9d7320 DJ |
295 | return SR_ERR; |
296 | ||
05c644ea ML |
297 | if (sr_scpi_read_begin(scpi) != SR_OK) |
298 | return SR_ERR; | |
299 | ||
300 | response = g_string_new(""); | |
301 | ||
302 | *scpi_response = NULL; | |
303 | ||
304 | while (!sr_scpi_read_complete(scpi)) { | |
305 | len = sr_scpi_read_data(scpi, buf, sizeof(buf)); | |
306 | if (len < 0) { | |
307 | g_string_free(response, TRUE); | |
308 | return SR_ERR; | |
309 | } | |
310 | g_string_append_len(response, buf, len); | |
311 | } | |
312 | ||
313 | *scpi_response = response->str; | |
314 | g_string_free(response, FALSE); | |
315 | ||
316 | return SR_OK; | |
d730f70e DJ |
317 | } |
318 | ||
319 | /** | |
320 | * Send a SCPI command, read the reply, parse it as a bool value and store the | |
321 | * result in scpi_response. | |
322 | * | |
23f43dff | 323 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
324 | * @param command The SCPI command to send to the device (can be NULL). |
325 | * @param scpi_response Pointer where to store the parsed result. | |
326 | * | |
327 | * @return SR_OK on success, SR_ERR on failure. | |
328 | */ | |
23f43dff | 329 | SR_PRIV int sr_scpi_get_bool(struct sr_scpi_dev_inst *scpi, |
d730f70e DJ |
330 | const char *command, gboolean *scpi_response) |
331 | { | |
332 | int ret; | |
333 | char *response; | |
334 | ||
335 | response = NULL; | |
336 | ||
23f43dff | 337 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
338 | if (!response) |
339 | return SR_ERR; | |
340 | ||
d5976d8b | 341 | if (parse_strict_bool(response, scpi_response) == SR_OK) |
d730f70e DJ |
342 | ret = SR_OK; |
343 | else | |
344 | ret = SR_ERR; | |
345 | ||
346 | g_free(response); | |
347 | ||
348 | return ret; | |
349 | } | |
350 | ||
351 | /** | |
352 | * Send a SCPI command, read the reply, parse it as an integer and store the | |
353 | * result in scpi_response. | |
354 | * | |
23f43dff | 355 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
356 | * @param command The SCPI command to send to the device (can be NULL). |
357 | * @param scpi_response Pointer where to store the parsed result. | |
358 | * | |
359 | * @return SR_OK on success, SR_ERR on failure. | |
360 | */ | |
23f43dff | 361 | SR_PRIV int sr_scpi_get_int(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 362 | const char *command, int *scpi_response) |
d730f70e DJ |
363 | { |
364 | int ret; | |
365 | char *response; | |
366 | ||
367 | response = NULL; | |
368 | ||
23f43dff | 369 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
370 | if (!response) |
371 | return SR_ERR; | |
372 | ||
373 | if (sr_atoi(response, scpi_response) == SR_OK) | |
374 | ret = SR_OK; | |
375 | else | |
376 | ret = SR_ERR; | |
377 | ||
378 | g_free(response); | |
379 | ||
380 | return ret; | |
381 | } | |
382 | ||
383 | /** | |
384 | * Send a SCPI command, read the reply, parse it as a float and store the | |
385 | * result in scpi_response. | |
386 | * | |
23f43dff | 387 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
388 | * @param command The SCPI command to send to the device (can be NULL). |
389 | * @param scpi_response Pointer where to store the parsed result. | |
390 | * | |
391 | * @return SR_OK on success, SR_ERR on failure. | |
392 | */ | |
23f43dff | 393 | SR_PRIV int sr_scpi_get_float(struct sr_scpi_dev_inst *scpi, |
d730f70e DJ |
394 | const char *command, float *scpi_response) |
395 | { | |
396 | int ret; | |
397 | char *response; | |
398 | ||
399 | response = NULL; | |
400 | ||
23f43dff | 401 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
402 | if (!response) |
403 | return SR_ERR; | |
404 | ||
405 | if (sr_atof(response, scpi_response) == SR_OK) | |
406 | ret = SR_OK; | |
407 | else | |
408 | ret = SR_ERR; | |
409 | ||
410 | g_free(response); | |
411 | ||
412 | return ret; | |
413 | } | |
414 | ||
415 | /** | |
416 | * Send a SCPI command, read the reply, parse it as a double and store the | |
417 | * result in scpi_response. | |
418 | * | |
23f43dff | 419 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
420 | * @param command The SCPI command to send to the device (can be NULL). |
421 | * @param scpi_response Pointer where to store the parsed result. | |
422 | * | |
423 | * @return SR_OK on success, SR_ERR on failure. | |
424 | */ | |
23f43dff | 425 | SR_PRIV int sr_scpi_get_double(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 426 | const char *command, double *scpi_response) |
d730f70e DJ |
427 | { |
428 | int ret; | |
429 | char *response; | |
430 | ||
431 | response = NULL; | |
432 | ||
23f43dff | 433 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
434 | if (!response) |
435 | return SR_ERR; | |
436 | ||
437 | if (sr_atod(response, scpi_response) == SR_OK) | |
438 | ret = SR_OK; | |
439 | else | |
440 | ret = SR_ERR; | |
441 | ||
442 | g_free(response); | |
443 | ||
7b9d7320 DJ |
444 | return ret; |
445 | } | |
446 | ||
f5922ade DJ |
447 | /** |
448 | * Send a SCPI *OPC? command, read the reply and return the result of the | |
449 | * command. | |
450 | * | |
23f43dff | 451 | * @param scpi Previously initialised SCPI device structure. |
f5922ade DJ |
452 | * |
453 | * @return SR_OK on success, SR_ERR on failure. | |
454 | */ | |
23f43dff | 455 | SR_PRIV int sr_scpi_get_opc(struct sr_scpi_dev_inst *scpi) |
f5922ade DJ |
456 | { |
457 | unsigned int i; | |
458 | gboolean opc; | |
459 | ||
460 | for (i = 0; i < SCPI_READ_RETRIES; ++i) { | |
23f43dff | 461 | sr_scpi_get_bool(scpi, SCPI_CMD_OPC, &opc); |
f5922ade DJ |
462 | if (opc) |
463 | return SR_OK; | |
f5922ade DJ |
464 | g_usleep(SCPI_READ_RETRY_TIMEOUT); |
465 | } | |
466 | ||
467 | return SR_ERR; | |
468 | } | |
469 | ||
8acbb89a DJ |
470 | /** |
471 | * Send a SCPI command, read the reply, parse it as comma separated list of | |
472 | * floats and store the as an result in scpi_response. | |
473 | * | |
23f43dff | 474 | * @param scpi Previously initialised SCPI device structure. |
8acbb89a DJ |
475 | * @param command The SCPI command to send to the device (can be NULL). |
476 | * @param scpi_response Pointer where to store the parsed result. | |
477 | * | |
478 | * @return SR_OK upon successfully parsing all values, SR_ERR upon a parsing | |
d5976d8b UH |
479 | * error or upon no response. The allocated response must be freed by |
480 | * the caller in the case of an SR_OK as well as in the case of | |
481 | * parsing error. | |
8acbb89a | 482 | */ |
23f43dff | 483 | SR_PRIV int sr_scpi_get_floatv(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 484 | const char *command, GArray **scpi_response) |
8acbb89a DJ |
485 | { |
486 | int ret; | |
487 | float tmp; | |
488 | char *response; | |
d5976d8b | 489 | gchar **ptr, **tokens; |
8acbb89a DJ |
490 | GArray *response_array; |
491 | ||
492 | ret = SR_OK; | |
493 | response = NULL; | |
494 | tokens = NULL; | |
495 | ||
23f43dff | 496 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
8acbb89a DJ |
497 | if (!response) |
498 | return SR_ERR; | |
499 | ||
500 | tokens = g_strsplit(response, ",", 0); | |
501 | ptr = tokens; | |
502 | ||
503 | response_array = g_array_sized_new(TRUE, FALSE, sizeof(float), 256); | |
504 | ||
d5976d8b | 505 | while (*ptr) { |
8acbb89a DJ |
506 | if (sr_atof(*ptr, &tmp) == SR_OK) |
507 | response_array = g_array_append_val(response_array, | |
508 | tmp); | |
509 | else | |
510 | ret = SR_ERR; | |
511 | ||
512 | ptr++; | |
513 | } | |
514 | g_strfreev(tokens); | |
515 | g_free(response); | |
516 | ||
517 | if (ret == SR_ERR && response_array->len == 0) { | |
518 | g_array_free(response_array, TRUE); | |
519 | *scpi_response = NULL; | |
520 | return SR_ERR; | |
521 | } | |
522 | ||
523 | *scpi_response = response_array; | |
524 | ||
1a323dd8 DJ |
525 | return ret; |
526 | } | |
527 | ||
528 | /** | |
529 | * Send a SCPI command, read the reply, parse it as comma separated list of | |
530 | * unsigned 8 bit integers and store the as an result in scpi_response. | |
531 | * | |
23f43dff | 532 | * @param scpi Previously initialised SCPI device structure. |
1a323dd8 DJ |
533 | * @param command The SCPI command to send to the device (can be NULL). |
534 | * @param scpi_response Pointer where to store the parsed result. | |
535 | * | |
536 | * @return SR_OK upon successfully parsing all values, SR_ERR upon a parsing | |
d5976d8b UH |
537 | * error or upon no response. The allocated response must be freed by |
538 | * the caller in the case of an SR_OK as well as in the case of | |
539 | * parsing error. | |
1a323dd8 | 540 | */ |
23f43dff | 541 | SR_PRIV int sr_scpi_get_uint8v(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 542 | const char *command, GArray **scpi_response) |
1a323dd8 | 543 | { |
d5976d8b | 544 | int tmp, ret; |
1a323dd8 | 545 | char *response; |
d5976d8b | 546 | gchar **ptr, **tokens; |
1a323dd8 DJ |
547 | GArray *response_array; |
548 | ||
549 | ret = SR_OK; | |
550 | response = NULL; | |
551 | tokens = NULL; | |
552 | ||
23f43dff | 553 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
1a323dd8 DJ |
554 | if (!response) |
555 | return SR_ERR; | |
556 | ||
557 | tokens = g_strsplit(response, ",", 0); | |
558 | ptr = tokens; | |
559 | ||
560 | response_array = g_array_sized_new(TRUE, FALSE, sizeof(uint8_t), 256); | |
561 | ||
d5976d8b | 562 | while (*ptr) { |
1a323dd8 DJ |
563 | if (sr_atoi(*ptr, &tmp) == SR_OK) |
564 | response_array = g_array_append_val(response_array, | |
565 | tmp); | |
566 | else | |
567 | ret = SR_ERR; | |
568 | ||
569 | ptr++; | |
570 | } | |
571 | g_strfreev(tokens); | |
572 | g_free(response); | |
573 | ||
574 | if (response_array->len == 0) { | |
575 | g_array_free(response_array, TRUE); | |
576 | *scpi_response = NULL; | |
577 | return SR_ERR; | |
578 | } | |
579 | ||
580 | *scpi_response = response_array; | |
581 | ||
8acbb89a DJ |
582 | return ret; |
583 | } | |
584 | ||
7b9d7320 DJ |
585 | /** |
586 | * Send the *IDN? SCPI command, receive the reply, parse it and store the | |
587 | * reply as a sr_scpi_hw_info structure in the supplied scpi_response pointer. | |
588 | * | |
d5976d8b UH |
589 | * The hw_info structure must be freed by the caller via sr_scpi_hw_info_free(). |
590 | * | |
23f43dff | 591 | * @param scpi Previously initialised SCPI device structure. |
7b9d7320 DJ |
592 | * @param scpi_response Pointer where to store the hw_info structure. |
593 | * | |
594 | * @return SR_OK upon success, SR_ERR on failure. | |
7b9d7320 | 595 | */ |
23f43dff | 596 | SR_PRIV int sr_scpi_get_hw_id(struct sr_scpi_dev_inst *scpi, |
7b9d7320 DJ |
597 | struct sr_scpi_hw_info **scpi_response) |
598 | { | |
599 | int num_tokens; | |
600 | char *response; | |
bc7b7eb1 | 601 | char *newline; |
7b9d7320 | 602 | gchar **tokens; |
7b9d7320 DJ |
603 | struct sr_scpi_hw_info *hw_info; |
604 | ||
605 | response = NULL; | |
606 | tokens = NULL; | |
607 | ||
23f43dff | 608 | if (sr_scpi_get_string(scpi, SCPI_CMD_IDN, &response) != SR_OK) |
7b9d7320 DJ |
609 | if (!response) |
610 | return SR_ERR; | |
611 | ||
77c16c04 ML |
612 | sr_info("Got IDN string: '%s'", response); |
613 | ||
bc7b7eb1 ML |
614 | /* Remove trailing newline if present. */ |
615 | if ((newline = g_strrstr(response, "\n"))) | |
616 | newline[0] = '\0'; | |
617 | ||
7b9d7320 DJ |
618 | /* |
619 | * The response to a '*IDN?' is specified by the SCPI spec. It contains | |
620 | * a comma-separated list containing the manufacturer name, instrument | |
621 | * model, serial number of the instrument and the firmware version. | |
622 | */ | |
623 | tokens = g_strsplit(response, ",", 0); | |
624 | ||
625 | for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++); | |
626 | ||
627 | if (num_tokens != 4) { | |
d5976d8b | 628 | sr_dbg("IDN response not according to spec: %80.s.", response); |
7b9d7320 DJ |
629 | g_strfreev(tokens); |
630 | g_free(response); | |
631 | return SR_ERR; | |
632 | } | |
633 | g_free(response); | |
634 | ||
635 | hw_info = g_try_malloc(sizeof(struct sr_scpi_hw_info)); | |
636 | if (!hw_info) { | |
637 | g_strfreev(tokens); | |
638 | return SR_ERR_MALLOC; | |
639 | } | |
640 | ||
641 | hw_info->manufacturer = g_strdup(tokens[0]); | |
642 | hw_info->model = g_strdup(tokens[1]); | |
643 | hw_info->serial_number = g_strdup(tokens[2]); | |
644 | hw_info->firmware_version = g_strdup(tokens[3]); | |
645 | ||
646 | g_strfreev(tokens); | |
647 | ||
648 | *scpi_response = hw_info; | |
649 | ||
650 | return SR_OK; | |
651 | } | |
652 | ||
653 | /** | |
654 | * Free a sr_scpi_hw_info struct. | |
655 | * | |
656 | * @param hw_info Pointer to the struct to free. | |
657 | * | |
658 | * This function is safe to call with a NULL pointer. | |
659 | */ | |
660 | SR_PRIV void sr_scpi_hw_info_free(struct sr_scpi_hw_info *hw_info) | |
661 | { | |
662 | if (hw_info) { | |
663 | g_free(hw_info->manufacturer); | |
664 | g_free(hw_info->model); | |
665 | g_free(hw_info->serial_number); | |
666 | g_free(hw_info->firmware_version); | |
667 | g_free(hw_info); | |
668 | } | |
669 | } |