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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 | 68 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_serial_dev; |
104ed125 AJ |
69 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_tcp_raw_dev; |
70 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_tcp_rigol_dev; | |
f754c146 AJ |
71 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_usbtmc_dev; |
72 | SR_PRIV extern const struct sr_scpi_dev_inst scpi_vxi_dev; | |
73 | ||
74 | static const struct sr_scpi_dev_inst *scpi_devs[] = { | |
104ed125 AJ |
75 | &scpi_tcp_raw_dev, |
76 | &scpi_tcp_rigol_dev, | |
f754c146 AJ |
77 | &scpi_usbtmc_dev, |
78 | #ifdef HAVE_RPC | |
79 | &scpi_vxi_dev, | |
80 | #endif | |
81 | #ifdef HAVE_LIBSERIALPORT | |
82 | &scpi_serial_dev, /* must be last as it matches any resource */ | |
83 | #endif | |
84 | }; | |
85 | ||
c3515cea AJ |
86 | SR_PRIV struct sr_scpi_dev_inst *scpi_dev_inst_new(const char *resource, |
87 | const char *serialcomm) | |
88 | { | |
89 | struct sr_scpi_dev_inst *scpi = NULL; | |
f754c146 AJ |
90 | const struct sr_scpi_dev_inst *scpi_dev; |
91 | gchar **params; | |
92 | unsigned i; | |
c3515cea | 93 | |
f754c146 AJ |
94 | for (i = 0; i < ARRAY_SIZE(scpi_devs); i++) { |
95 | scpi_dev = scpi_devs[i]; | |
96 | if (!strncmp(resource, scpi_dev->prefix, strlen(scpi_dev->prefix))) { | |
97 | sr_dbg("Opening %s device %s.", scpi_dev->name, resource); | |
98 | scpi = g_malloc(sizeof(*scpi)); | |
99 | *scpi = *scpi_dev; | |
100 | scpi->priv = g_malloc0(scpi->priv_size); | |
101 | params = g_strsplit(resource, "/", 0); | |
102 | if (scpi->dev_inst_new(scpi->priv, resource, | |
103 | params, serialcomm) != SR_OK) { | |
104 | sr_scpi_free(scpi); | |
105 | scpi = NULL; | |
106 | } | |
107 | g_strfreev(params); | |
108 | break; | |
109 | } | |
c3515cea | 110 | } |
f754c146 | 111 | |
c3515cea AJ |
112 | return scpi; |
113 | } | |
114 | ||
23f43dff ML |
115 | /** |
116 | * Open SCPI device. | |
117 | * | |
118 | * @param scpi Previously initialized SCPI device structure. | |
119 | * | |
120 | * @return SR_OK on success, SR_ERR on failure. | |
121 | */ | |
122 | SR_PRIV int sr_scpi_open(struct sr_scpi_dev_inst *scpi) | |
123 | { | |
124 | return scpi->open(scpi->priv); | |
125 | } | |
126 | ||
127 | /** | |
128 | * Add an event source for an SCPI device. | |
129 | * | |
130 | * @param scpi Previously initialized SCPI device structure. | |
131 | * @param events Events to check for. | |
132 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
133 | * @param cb Callback function to add. Must not be NULL. | |
134 | * @param cb_data Data for the callback function. Can be NULL. | |
135 | * | |
136 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
137 | * SR_ERR_MALLOC upon memory allocation errors. | |
138 | */ | |
139 | SR_PRIV int sr_scpi_source_add(struct sr_scpi_dev_inst *scpi, int events, | |
140 | int timeout, sr_receive_data_callback_t cb, void *cb_data) | |
141 | { | |
142 | return scpi->source_add(scpi->priv, events, timeout, cb, cb_data); | |
143 | } | |
144 | ||
145 | /** | |
146 | * Remove event source for an SCPI device. | |
147 | * | |
148 | * @param scpi Previously initialized SCPI device structure. | |
149 | * | |
150 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
151 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
152 | * internal errors. | |
153 | */ | |
154 | SR_PRIV int sr_scpi_source_remove(struct sr_scpi_dev_inst *scpi) | |
155 | { | |
156 | return scpi->source_remove(scpi->priv); | |
157 | } | |
158 | ||
7b9d7320 DJ |
159 | /** |
160 | * Send a SCPI command. | |
161 | * | |
23f43dff | 162 | * @param scpi Previously initialized SCPI device structure. |
504f40a5 | 163 | * @param format Format string, to be followed by any necessary arguments. |
7b9d7320 DJ |
164 | * |
165 | * @return SR_OK on success, SR_ERR on failure. | |
166 | */ | |
23f43dff | 167 | SR_PRIV int sr_scpi_send(struct sr_scpi_dev_inst *scpi, |
504f40a5 | 168 | const char *format, ...) |
7b9d7320 | 169 | { |
87c41083 ML |
170 | va_list args; |
171 | int ret; | |
172 | ||
173 | va_start(args, format); | |
174 | ret = sr_scpi_send_variadic(scpi, format, args); | |
175 | va_end(args); | |
176 | ||
177 | return ret; | |
178 | } | |
179 | ||
180 | /** | |
181 | * Send a SCPI command with a variadic argument list. | |
182 | * | |
183 | * @param scpi Previously initialized SCPI device structure. | |
184 | * @param format Format string. | |
185 | * @param args Argument list. | |
186 | * | |
187 | * @return SR_OK on success, SR_ERR on failure. | |
188 | */ | |
189 | SR_PRIV int sr_scpi_send_variadic(struct sr_scpi_dev_inst *scpi, | |
190 | const char *format, va_list args) | |
191 | { | |
192 | va_list args_copy; | |
504f40a5 ML |
193 | char *buf; |
194 | int len, ret; | |
195 | ||
504f40a5 | 196 | /* Get length of buffer required. */ |
87c41083 ML |
197 | va_copy(args_copy, args); |
198 | len = vsnprintf(NULL, 0, format, args_copy); | |
199 | va_end(args_copy); | |
504f40a5 ML |
200 | |
201 | /* Allocate buffer and write out command. */ | |
202 | buf = g_malloc(len + 1); | |
87c41083 | 203 | vsprintf(buf, format, args); |
504f40a5 ML |
204 | |
205 | /* Send command. */ | |
206 | ret = scpi->send(scpi->priv, buf); | |
207 | ||
208 | /* Free command buffer. */ | |
209 | g_free(buf); | |
210 | ||
211 | return ret; | |
23f43dff | 212 | } |
7b9d7320 | 213 | |
23f43dff | 214 | /** |
05c644ea | 215 | * Begin receiving an SCPI reply. |
23f43dff ML |
216 | * |
217 | * @param scpi Previously initialised SCPI device structure. | |
23f43dff | 218 | * |
05c644ea | 219 | * @return SR_OK on success, SR_ERR on failure. |
23f43dff | 220 | */ |
05c644ea | 221 | SR_PRIV int sr_scpi_read_begin(struct sr_scpi_dev_inst *scpi) |
23f43dff | 222 | { |
05c644ea | 223 | return scpi->read_begin(scpi->priv); |
23f43dff | 224 | } |
7b9d7320 | 225 | |
a1ff9c18 ML |
226 | /** |
227 | * Read part of a response from SCPI device. | |
228 | * | |
229 | * @param scpi Previously initialised SCPI device structure. | |
230 | * @param buf Buffer to store result. | |
231 | * @param maxlen Maximum number of bytes to read. | |
232 | * | |
233 | * @return Number of bytes read, or SR_ERR upon failure. | |
234 | */ | |
05c644ea | 235 | SR_PRIV int sr_scpi_read_data(struct sr_scpi_dev_inst *scpi, |
a1ff9c18 ML |
236 | char *buf, int maxlen) |
237 | { | |
05c644ea ML |
238 | return scpi->read_data(scpi->priv, buf, maxlen); |
239 | } | |
240 | ||
241 | /** | |
242 | * Check whether a complete SCPI response has been received. | |
243 | * | |
244 | * @param scpi Previously initialised SCPI device structure. | |
245 | * | |
246 | * @return 1 if complete, 0 otherwise. | |
247 | */ | |
248 | SR_PRIV int sr_scpi_read_complete(struct sr_scpi_dev_inst *scpi) | |
249 | { | |
250 | return scpi->read_complete(scpi->priv); | |
a1ff9c18 ML |
251 | } |
252 | ||
23f43dff ML |
253 | /** |
254 | * Close SCPI device. | |
255 | * | |
256 | * @param scpi Previously initialized SCPI device structure. | |
257 | * | |
258 | * @return SR_OK on success, SR_ERR on failure. | |
259 | */ | |
260 | SR_PRIV int sr_scpi_close(struct sr_scpi_dev_inst *scpi) | |
261 | { | |
262 | return scpi->close(scpi->priv); | |
263 | } | |
7b9d7320 | 264 | |
23f43dff ML |
265 | /** |
266 | * Free SCPI device. | |
267 | * | |
268 | * @param scpi Previously initialized SCPI device structure. | |
269 | * | |
270 | * @return SR_OK on success, SR_ERR on failure. | |
271 | */ | |
272 | SR_PRIV void sr_scpi_free(struct sr_scpi_dev_inst *scpi) | |
273 | { | |
274 | scpi->free(scpi->priv); | |
f754c146 | 275 | g_free(scpi->priv); |
23f43dff | 276 | g_free(scpi); |
7b9d7320 DJ |
277 | } |
278 | ||
279 | /** | |
280 | * Send a SCPI command, receive the reply and store the reply in scpi_response. | |
281 | * | |
23f43dff | 282 | * @param scpi Previously initialised SCPI device structure. |
7b9d7320 | 283 | * @param command The SCPI command to send to the device (can be NULL). |
d5976d8b | 284 | * @param scpi_response Pointer where to store the SCPI response. |
7b9d7320 | 285 | * |
05c644ea | 286 | * @return SR_OK on success, SR_ERR on failure. |
7b9d7320 | 287 | */ |
23f43dff | 288 | SR_PRIV int sr_scpi_get_string(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 289 | const char *command, char **scpi_response) |
7b9d7320 | 290 | { |
05c644ea ML |
291 | char buf[256]; |
292 | int len; | |
293 | GString *response; | |
294 | ||
7b9d7320 | 295 | if (command) |
23f43dff | 296 | if (sr_scpi_send(scpi, command) != SR_OK) |
7b9d7320 DJ |
297 | return SR_ERR; |
298 | ||
05c644ea ML |
299 | if (sr_scpi_read_begin(scpi) != SR_OK) |
300 | return SR_ERR; | |
301 | ||
302 | response = g_string_new(""); | |
303 | ||
304 | *scpi_response = NULL; | |
305 | ||
306 | while (!sr_scpi_read_complete(scpi)) { | |
307 | len = sr_scpi_read_data(scpi, buf, sizeof(buf)); | |
308 | if (len < 0) { | |
309 | g_string_free(response, TRUE); | |
310 | return SR_ERR; | |
311 | } | |
312 | g_string_append_len(response, buf, len); | |
313 | } | |
314 | ||
315 | *scpi_response = response->str; | |
316 | g_string_free(response, FALSE); | |
317 | ||
318 | return SR_OK; | |
d730f70e DJ |
319 | } |
320 | ||
321 | /** | |
322 | * Send a SCPI command, read the reply, parse it as a bool value and store the | |
323 | * result in scpi_response. | |
324 | * | |
23f43dff | 325 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
326 | * @param command The SCPI command to send to the device (can be NULL). |
327 | * @param scpi_response Pointer where to store the parsed result. | |
328 | * | |
329 | * @return SR_OK on success, SR_ERR on failure. | |
330 | */ | |
23f43dff | 331 | SR_PRIV int sr_scpi_get_bool(struct sr_scpi_dev_inst *scpi, |
d730f70e DJ |
332 | const char *command, gboolean *scpi_response) |
333 | { | |
334 | int ret; | |
335 | char *response; | |
336 | ||
337 | response = NULL; | |
338 | ||
23f43dff | 339 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
340 | if (!response) |
341 | return SR_ERR; | |
342 | ||
d5976d8b | 343 | if (parse_strict_bool(response, scpi_response) == SR_OK) |
d730f70e DJ |
344 | ret = SR_OK; |
345 | else | |
346 | ret = SR_ERR; | |
347 | ||
348 | g_free(response); | |
349 | ||
350 | return ret; | |
351 | } | |
352 | ||
353 | /** | |
354 | * Send a SCPI command, read the reply, parse it as an integer and store the | |
355 | * result in scpi_response. | |
356 | * | |
23f43dff | 357 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
358 | * @param command The SCPI command to send to the device (can be NULL). |
359 | * @param scpi_response Pointer where to store the parsed result. | |
360 | * | |
361 | * @return SR_OK on success, SR_ERR on failure. | |
362 | */ | |
23f43dff | 363 | SR_PRIV int sr_scpi_get_int(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 364 | const char *command, int *scpi_response) |
d730f70e DJ |
365 | { |
366 | int ret; | |
367 | char *response; | |
368 | ||
369 | response = NULL; | |
370 | ||
23f43dff | 371 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
372 | if (!response) |
373 | return SR_ERR; | |
374 | ||
375 | if (sr_atoi(response, scpi_response) == SR_OK) | |
376 | ret = SR_OK; | |
377 | else | |
378 | ret = SR_ERR; | |
379 | ||
380 | g_free(response); | |
381 | ||
382 | return ret; | |
383 | } | |
384 | ||
385 | /** | |
386 | * Send a SCPI command, read the reply, parse it as a float and store the | |
387 | * result in scpi_response. | |
388 | * | |
23f43dff | 389 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
390 | * @param command The SCPI command to send to the device (can be NULL). |
391 | * @param scpi_response Pointer where to store the parsed result. | |
392 | * | |
393 | * @return SR_OK on success, SR_ERR on failure. | |
394 | */ | |
23f43dff | 395 | SR_PRIV int sr_scpi_get_float(struct sr_scpi_dev_inst *scpi, |
d730f70e DJ |
396 | const char *command, float *scpi_response) |
397 | { | |
398 | int ret; | |
399 | char *response; | |
400 | ||
401 | response = NULL; | |
402 | ||
23f43dff | 403 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
404 | if (!response) |
405 | return SR_ERR; | |
406 | ||
407 | if (sr_atof(response, scpi_response) == SR_OK) | |
408 | ret = SR_OK; | |
409 | else | |
410 | ret = SR_ERR; | |
411 | ||
412 | g_free(response); | |
413 | ||
414 | return ret; | |
415 | } | |
416 | ||
417 | /** | |
418 | * Send a SCPI command, read the reply, parse it as a double and store the | |
419 | * result in scpi_response. | |
420 | * | |
23f43dff | 421 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
422 | * @param command The SCPI command to send to the device (can be NULL). |
423 | * @param scpi_response Pointer where to store the parsed result. | |
424 | * | |
425 | * @return SR_OK on success, SR_ERR on failure. | |
426 | */ | |
23f43dff | 427 | SR_PRIV int sr_scpi_get_double(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 428 | const char *command, double *scpi_response) |
d730f70e DJ |
429 | { |
430 | int ret; | |
431 | char *response; | |
432 | ||
433 | response = NULL; | |
434 | ||
23f43dff | 435 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
436 | if (!response) |
437 | return SR_ERR; | |
438 | ||
439 | if (sr_atod(response, scpi_response) == SR_OK) | |
440 | ret = SR_OK; | |
441 | else | |
442 | ret = SR_ERR; | |
443 | ||
444 | g_free(response); | |
445 | ||
7b9d7320 DJ |
446 | return ret; |
447 | } | |
448 | ||
f5922ade DJ |
449 | /** |
450 | * Send a SCPI *OPC? command, read the reply and return the result of the | |
451 | * command. | |
452 | * | |
23f43dff | 453 | * @param scpi Previously initialised SCPI device structure. |
f5922ade DJ |
454 | * |
455 | * @return SR_OK on success, SR_ERR on failure. | |
456 | */ | |
23f43dff | 457 | SR_PRIV int sr_scpi_get_opc(struct sr_scpi_dev_inst *scpi) |
f5922ade DJ |
458 | { |
459 | unsigned int i; | |
460 | gboolean opc; | |
461 | ||
462 | for (i = 0; i < SCPI_READ_RETRIES; ++i) { | |
23f43dff | 463 | sr_scpi_get_bool(scpi, SCPI_CMD_OPC, &opc); |
f5922ade DJ |
464 | if (opc) |
465 | return SR_OK; | |
f5922ade DJ |
466 | g_usleep(SCPI_READ_RETRY_TIMEOUT); |
467 | } | |
468 | ||
469 | return SR_ERR; | |
470 | } | |
471 | ||
8acbb89a DJ |
472 | /** |
473 | * Send a SCPI command, read the reply, parse it as comma separated list of | |
474 | * floats and store the as an result in scpi_response. | |
475 | * | |
23f43dff | 476 | * @param scpi Previously initialised SCPI device structure. |
8acbb89a DJ |
477 | * @param command The SCPI command to send to the device (can be NULL). |
478 | * @param scpi_response Pointer where to store the parsed result. | |
479 | * | |
480 | * @return SR_OK upon successfully parsing all values, SR_ERR upon a parsing | |
d5976d8b UH |
481 | * error or upon no response. The allocated response must be freed by |
482 | * the caller in the case of an SR_OK as well as in the case of | |
483 | * parsing error. | |
8acbb89a | 484 | */ |
23f43dff | 485 | SR_PRIV int sr_scpi_get_floatv(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 486 | const char *command, GArray **scpi_response) |
8acbb89a DJ |
487 | { |
488 | int ret; | |
489 | float tmp; | |
490 | char *response; | |
d5976d8b | 491 | gchar **ptr, **tokens; |
8acbb89a DJ |
492 | GArray *response_array; |
493 | ||
494 | ret = SR_OK; | |
495 | response = NULL; | |
496 | tokens = NULL; | |
497 | ||
23f43dff | 498 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
8acbb89a DJ |
499 | if (!response) |
500 | return SR_ERR; | |
501 | ||
502 | tokens = g_strsplit(response, ",", 0); | |
503 | ptr = tokens; | |
504 | ||
505 | response_array = g_array_sized_new(TRUE, FALSE, sizeof(float), 256); | |
506 | ||
d5976d8b | 507 | while (*ptr) { |
8acbb89a DJ |
508 | if (sr_atof(*ptr, &tmp) == SR_OK) |
509 | response_array = g_array_append_val(response_array, | |
510 | tmp); | |
511 | else | |
512 | ret = SR_ERR; | |
513 | ||
514 | ptr++; | |
515 | } | |
516 | g_strfreev(tokens); | |
517 | g_free(response); | |
518 | ||
519 | if (ret == SR_ERR && response_array->len == 0) { | |
520 | g_array_free(response_array, TRUE); | |
521 | *scpi_response = NULL; | |
522 | return SR_ERR; | |
523 | } | |
524 | ||
525 | *scpi_response = response_array; | |
526 | ||
1a323dd8 DJ |
527 | return ret; |
528 | } | |
529 | ||
530 | /** | |
531 | * Send a SCPI command, read the reply, parse it as comma separated list of | |
532 | * unsigned 8 bit integers and store the as an result in scpi_response. | |
533 | * | |
23f43dff | 534 | * @param scpi Previously initialised SCPI device structure. |
1a323dd8 DJ |
535 | * @param command The SCPI command to send to the device (can be NULL). |
536 | * @param scpi_response Pointer where to store the parsed result. | |
537 | * | |
538 | * @return SR_OK upon successfully parsing all values, SR_ERR upon a parsing | |
d5976d8b UH |
539 | * error or upon no response. The allocated response must be freed by |
540 | * the caller in the case of an SR_OK as well as in the case of | |
541 | * parsing error. | |
1a323dd8 | 542 | */ |
23f43dff | 543 | SR_PRIV int sr_scpi_get_uint8v(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 544 | const char *command, GArray **scpi_response) |
1a323dd8 | 545 | { |
d5976d8b | 546 | int tmp, ret; |
1a323dd8 | 547 | char *response; |
d5976d8b | 548 | gchar **ptr, **tokens; |
1a323dd8 DJ |
549 | GArray *response_array; |
550 | ||
551 | ret = SR_OK; | |
552 | response = NULL; | |
553 | tokens = NULL; | |
554 | ||
23f43dff | 555 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
1a323dd8 DJ |
556 | if (!response) |
557 | return SR_ERR; | |
558 | ||
559 | tokens = g_strsplit(response, ",", 0); | |
560 | ptr = tokens; | |
561 | ||
562 | response_array = g_array_sized_new(TRUE, FALSE, sizeof(uint8_t), 256); | |
563 | ||
d5976d8b | 564 | while (*ptr) { |
1a323dd8 DJ |
565 | if (sr_atoi(*ptr, &tmp) == SR_OK) |
566 | response_array = g_array_append_val(response_array, | |
567 | tmp); | |
568 | else | |
569 | ret = SR_ERR; | |
570 | ||
571 | ptr++; | |
572 | } | |
573 | g_strfreev(tokens); | |
574 | g_free(response); | |
575 | ||
576 | if (response_array->len == 0) { | |
577 | g_array_free(response_array, TRUE); | |
578 | *scpi_response = NULL; | |
579 | return SR_ERR; | |
580 | } | |
581 | ||
582 | *scpi_response = response_array; | |
583 | ||
8acbb89a DJ |
584 | return ret; |
585 | } | |
586 | ||
7b9d7320 DJ |
587 | /** |
588 | * Send the *IDN? SCPI command, receive the reply, parse it and store the | |
589 | * reply as a sr_scpi_hw_info structure in the supplied scpi_response pointer. | |
590 | * | |
d5976d8b UH |
591 | * The hw_info structure must be freed by the caller via sr_scpi_hw_info_free(). |
592 | * | |
23f43dff | 593 | * @param scpi Previously initialised SCPI device structure. |
7b9d7320 DJ |
594 | * @param scpi_response Pointer where to store the hw_info structure. |
595 | * | |
596 | * @return SR_OK upon success, SR_ERR on failure. | |
7b9d7320 | 597 | */ |
23f43dff | 598 | SR_PRIV int sr_scpi_get_hw_id(struct sr_scpi_dev_inst *scpi, |
7b9d7320 DJ |
599 | struct sr_scpi_hw_info **scpi_response) |
600 | { | |
601 | int num_tokens; | |
602 | char *response; | |
bc7b7eb1 | 603 | char *newline; |
7b9d7320 | 604 | gchar **tokens; |
7b9d7320 DJ |
605 | struct sr_scpi_hw_info *hw_info; |
606 | ||
607 | response = NULL; | |
608 | tokens = NULL; | |
609 | ||
23f43dff | 610 | if (sr_scpi_get_string(scpi, SCPI_CMD_IDN, &response) != SR_OK) |
7b9d7320 DJ |
611 | if (!response) |
612 | return SR_ERR; | |
613 | ||
77c16c04 ML |
614 | sr_info("Got IDN string: '%s'", response); |
615 | ||
bc7b7eb1 ML |
616 | /* Remove trailing newline if present. */ |
617 | if ((newline = g_strrstr(response, "\n"))) | |
618 | newline[0] = '\0'; | |
619 | ||
7b9d7320 DJ |
620 | /* |
621 | * The response to a '*IDN?' is specified by the SCPI spec. It contains | |
622 | * a comma-separated list containing the manufacturer name, instrument | |
623 | * model, serial number of the instrument and the firmware version. | |
624 | */ | |
625 | tokens = g_strsplit(response, ",", 0); | |
626 | ||
627 | for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++); | |
628 | ||
629 | if (num_tokens != 4) { | |
d5976d8b | 630 | sr_dbg("IDN response not according to spec: %80.s.", response); |
7b9d7320 DJ |
631 | g_strfreev(tokens); |
632 | g_free(response); | |
633 | return SR_ERR; | |
634 | } | |
635 | g_free(response); | |
636 | ||
637 | hw_info = g_try_malloc(sizeof(struct sr_scpi_hw_info)); | |
638 | if (!hw_info) { | |
639 | g_strfreev(tokens); | |
640 | return SR_ERR_MALLOC; | |
641 | } | |
642 | ||
643 | hw_info->manufacturer = g_strdup(tokens[0]); | |
644 | hw_info->model = g_strdup(tokens[1]); | |
645 | hw_info->serial_number = g_strdup(tokens[2]); | |
646 | hw_info->firmware_version = g_strdup(tokens[3]); | |
647 | ||
648 | g_strfreev(tokens); | |
649 | ||
650 | *scpi_response = hw_info; | |
651 | ||
652 | return SR_OK; | |
653 | } | |
654 | ||
655 | /** | |
656 | * Free a sr_scpi_hw_info struct. | |
657 | * | |
658 | * @param hw_info Pointer to the struct to free. | |
659 | * | |
660 | * This function is safe to call with a NULL pointer. | |
661 | */ | |
662 | SR_PRIV void sr_scpi_hw_info_free(struct sr_scpi_hw_info *hw_info) | |
663 | { | |
664 | if (hw_info) { | |
665 | g_free(hw_info->manufacturer); | |
666 | g_free(hw_info->model); | |
667 | g_free(hw_info->serial_number); | |
668 | g_free(hw_info->firmware_version); | |
669 | g_free(hw_info); | |
670 | } | |
671 | } |