]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 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 <string.h> | |
21 | #include "protocol.h" | |
22 | ||
23 | SR_PRIV struct sr_dev_driver scpi_pps_driver_info; | |
24 | static struct sr_dev_driver *di = &scpi_pps_driver_info; | |
25 | extern unsigned int num_pps_profiles; | |
26 | extern const struct scpi_pps pps_profiles[]; | |
27 | ||
28 | static const int32_t scanopts[] = { | |
29 | SR_CONF_CONN, | |
30 | SR_CONF_SERIALCOMM, | |
31 | }; | |
32 | ||
33 | static int init(struct sr_context *sr_ctx) | |
34 | { | |
35 | return std_init(sr_ctx, di, LOG_PREFIX); | |
36 | } | |
37 | ||
38 | static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi) | |
39 | { | |
40 | struct dev_context *devc; | |
41 | struct sr_dev_inst *sdi; | |
42 | struct sr_scpi_hw_info *hw_info; | |
43 | struct sr_channel_group *cg; | |
44 | struct sr_channel *ch; | |
45 | const struct scpi_pps *device; | |
46 | const struct channel_group_spec *cgs; | |
47 | struct pps_channel_group *pcg; | |
48 | uint64_t mask; | |
49 | unsigned int i, j; | |
50 | const char *vendor; | |
51 | ||
52 | if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) { | |
53 | sr_info("Couldn't get IDN response."); | |
54 | return NULL; | |
55 | } | |
56 | ||
57 | device = NULL; | |
58 | for (i = 0; i < num_pps_profiles; i++) { | |
59 | vendor = get_vendor(hw_info->manufacturer); | |
60 | if (strcasecmp(vendor, pps_profiles[i].idn_vendor)) | |
61 | continue; | |
62 | if (!strcmp(hw_info->model, pps_profiles[i].idn_model)) { | |
63 | device = &pps_profiles[i]; | |
64 | break; | |
65 | } | |
66 | } | |
67 | if (!device) { | |
68 | sr_scpi_hw_info_free(hw_info); | |
69 | return NULL; | |
70 | } | |
71 | ||
72 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, vendor, | |
73 | device->idn_model, hw_info->firmware_version); | |
74 | sdi->conn = scpi; | |
75 | sdi->driver = di; | |
76 | sdi->inst_type = SR_INST_SCPI; | |
77 | devc = g_malloc0(sizeof(struct dev_context)); | |
78 | devc->device = device; | |
79 | sdi->priv = devc; | |
80 | ||
81 | for (i = 0; i < device->num_channels; i++) { | |
82 | ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE, | |
83 | device->channels[i].name); | |
84 | sdi->channels = g_slist_append(sdi->channels, ch); | |
85 | } | |
86 | ||
87 | for (i = 0; i < device->num_channel_groups; i++) { | |
88 | cgs = &device->channel_groups[i]; | |
89 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
90 | cg->name = g_strdup(cgs->name); | |
91 | for (j = 0, mask = 1; j < 64; j++, mask <<= 1) { | |
92 | if (cgs->channel_index_mask & mask) { | |
93 | ch = g_slist_nth_data(sdi->channels, j); | |
94 | cg->channels = g_slist_append(cg->channels, ch); | |
95 | } | |
96 | } | |
97 | pcg = g_malloc0(sizeof(struct pps_channel_group)); | |
98 | pcg->features = cgs->features; | |
99 | cg->priv = pcg; | |
100 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
101 | } | |
102 | ||
103 | /* SCPI devices commonly lock the panel keys when accessed remotely. */ | |
104 | scpi_cmd(sdi, SCPI_CMD_KEY_UNLOCK); | |
105 | sr_scpi_close(scpi); | |
106 | ||
107 | return sdi; | |
108 | } | |
109 | ||
110 | static GSList *scan(GSList *options) | |
111 | { | |
112 | return sr_scpi_scan(di->priv, options, probe_device); | |
113 | } | |
114 | ||
115 | static GSList *dev_list(void) | |
116 | { | |
117 | return ((struct drv_context *)(di->priv))->instances; | |
118 | } | |
119 | ||
120 | static int dev_clear(void) | |
121 | { | |
122 | return std_dev_clear(di, NULL); | |
123 | } | |
124 | ||
125 | static int dev_open(struct sr_dev_inst *sdi) | |
126 | { | |
127 | struct sr_scpi_dev_inst *scpi; | |
128 | ||
129 | if (sdi->status != SR_ST_ACTIVE) | |
130 | return SR_ERR; | |
131 | ||
132 | scpi = sdi->conn; | |
133 | if (sr_scpi_open(scpi) < 0) | |
134 | return SR_ERR; | |
135 | ||
136 | sdi->status = SR_ST_ACTIVE; | |
137 | ||
138 | return SR_OK; | |
139 | } | |
140 | ||
141 | static int dev_close(struct sr_dev_inst *sdi) | |
142 | { | |
143 | struct sr_scpi_dev_inst *scpi; | |
144 | ||
145 | if (sdi->status != SR_ST_ACTIVE) | |
146 | return SR_ERR_DEV_CLOSED; | |
147 | ||
148 | scpi = sdi->conn; | |
149 | if (scpi) { | |
150 | scpi_cmd(sdi, SCPI_CMD_KEY_UNLOCK); | |
151 | sr_scpi_close(scpi); | |
152 | sdi->status = SR_ST_INACTIVE; | |
153 | } | |
154 | ||
155 | return SR_OK; | |
156 | } | |
157 | ||
158 | static int cleanup(void) | |
159 | { | |
160 | return SR_OK; | |
161 | } | |
162 | ||
163 | static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
164 | const struct sr_channel_group *cg) | |
165 | { | |
166 | struct dev_context *devc; | |
167 | struct sr_scpi_dev_inst *scpi; | |
168 | struct sr_channel *ch; | |
169 | double d; | |
170 | int ret; | |
171 | char *s; | |
172 | ||
173 | if (!sdi) | |
174 | return SR_ERR_ARG; | |
175 | ||
176 | devc = sdi->priv; | |
177 | scpi = sdi->conn; | |
178 | ||
179 | ret = SR_OK; | |
180 | if (!cg) { | |
181 | /* No channel group: global options. */ | |
182 | switch (key) { | |
183 | case SR_CONF_OVER_TEMPERATURE_PROTECTION: | |
184 | ret = SR_ERR; | |
185 | if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION) == SR_OK) { | |
186 | if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) { | |
187 | *data = g_variant_new_boolean(!strcmp(s, "ON")); | |
188 | ret = SR_OK; | |
189 | } | |
190 | } | |
191 | break; | |
192 | return SR_ERR_NA; | |
193 | break; | |
194 | case SR_CONF_OUTPUT_CHANNEL_CONFIG: | |
195 | ret = SR_ERR; | |
196 | if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_CHANNEL_CONFIG) == SR_OK) { | |
197 | if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) { | |
198 | *data = g_variant_new_string(s); | |
199 | g_free(s); | |
200 | ret = SR_OK; | |
201 | } | |
202 | } | |
203 | break; | |
204 | default: | |
205 | return SR_ERR_NA; | |
206 | } | |
207 | } else { | |
208 | /* | |
209 | * These options only apply to channel groups with a single | |
210 | * channel -- they're per-channel settings for the device. | |
211 | */ | |
212 | if (g_slist_length(cg->channels) > 1) | |
213 | return SR_ERR_NA; | |
214 | ch = cg->channels->data; | |
215 | ||
216 | switch (key) { | |
217 | case SR_CONF_OUTPUT_REGULATION: | |
218 | ret = SR_ERR; | |
219 | if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_REGULATION, ch->name) == SR_OK) { | |
220 | if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) { | |
221 | if (strcmp(s, "CC") && strcmp(s, "CV") && strcmp(s, "UR")) { | |
222 | sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s); | |
223 | } else { | |
224 | *data = g_variant_new_string(s); | |
225 | g_free(s); | |
226 | ret = SR_OK; | |
227 | } | |
228 | } | |
229 | } | |
230 | break; | |
231 | case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED: | |
232 | ret = SR_ERR; | |
233 | if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED, | |
234 | ch->name) == SR_OK) { | |
235 | if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) { | |
236 | *data = g_variant_new_boolean(!strcmp(s, "ON")); | |
237 | ret = SR_OK; | |
238 | } | |
239 | } | |
240 | break; | |
241 | case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE: | |
242 | ret = SR_ERR; | |
243 | if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE, | |
244 | ch->name) == SR_OK) { | |
245 | if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) { | |
246 | *data = g_variant_new_boolean(!strcmp(s, "YES")); | |
247 | ret = SR_OK; | |
248 | } | |
249 | } | |
250 | break; | |
251 | case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD: | |
252 | ret = SR_ERR; | |
253 | if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD, | |
254 | ch->name) == SR_OK) { | |
255 | if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) { | |
256 | *data = g_variant_new_double(d); | |
257 | ret = SR_OK; | |
258 | } | |
259 | } | |
260 | break; | |
261 | case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED: | |
262 | ret = SR_ERR; | |
263 | if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED, | |
264 | ch->name) == SR_OK) { | |
265 | if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) { | |
266 | *data = g_variant_new_boolean(!strcmp(s, "ON")); | |
267 | ret = SR_OK; | |
268 | } | |
269 | } | |
270 | break; | |
271 | case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE: | |
272 | ret = SR_ERR; | |
273 | if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE, | |
274 | ch->name) == SR_OK) { | |
275 | if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) { | |
276 | *data = g_variant_new_boolean(!strcmp(s, "YES")); | |
277 | ret = SR_OK; | |
278 | } | |
279 | } | |
280 | break; | |
281 | case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD: | |
282 | ret = SR_ERR; | |
283 | if (scpi_cmd(sdi, SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD, | |
284 | ch->name) == SR_OK) { | |
285 | if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) { | |
286 | *data = g_variant_new_double(d); | |
287 | ret = SR_OK; | |
288 | } | |
289 | } | |
290 | break; | |
291 | case SR_CONF_OUTPUT_VOLTAGE: | |
292 | ret = SR_ERR; | |
293 | if (scpi_cmd(sdi, SCPI_CMD_GET_MEAS_VOLTAGE, ch->name) == SR_OK) { | |
294 | if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) { | |
295 | *data = g_variant_new_double(d); | |
296 | ret = SR_OK; | |
297 | } | |
298 | } | |
299 | break; | |
300 | case SR_CONF_OUTPUT_VOLTAGE_MAX: | |
301 | ret = SR_ERR; | |
302 | if (scpi_cmd(sdi, SCPI_CMD_GET_VOLTAGE_MAX, ch->name) == SR_OK) { | |
303 | if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) { | |
304 | *data = g_variant_new_double(d); | |
305 | ret = SR_OK; | |
306 | } | |
307 | } | |
308 | break; | |
309 | case SR_CONF_OUTPUT_CURRENT: | |
310 | ret = SR_ERR; | |
311 | if (scpi_cmd(sdi, SCPI_CMD_GET_MEAS_CURRENT, ch->name) == SR_OK) { | |
312 | if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) { | |
313 | *data = g_variant_new_double(d); | |
314 | ret = SR_OK; | |
315 | } | |
316 | } | |
317 | break; | |
318 | case SR_CONF_OUTPUT_CURRENT_MAX: | |
319 | ret = SR_ERR; | |
320 | if (scpi_cmd(sdi, SCPI_CMD_GET_CURRENT_MAX, ch->name) == SR_OK) { | |
321 | if (sr_scpi_get_double(scpi, NULL, &d) == SR_OK) { | |
322 | *data = g_variant_new_double(d); | |
323 | ret = SR_OK; | |
324 | } | |
325 | } | |
326 | break; | |
327 | case SR_CONF_OUTPUT_ENABLED: | |
328 | ret = SR_ERR; | |
329 | if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_ENABLED, ch->name) == SR_OK) { | |
330 | if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) { | |
331 | *data = g_variant_new_boolean(!strcmp(s, "ON")); | |
332 | ret = SR_OK; | |
333 | } | |
334 | } | |
335 | break; | |
336 | default: | |
337 | return SR_ERR_NA; | |
338 | } | |
339 | } | |
340 | ||
341 | return ret; | |
342 | } | |
343 | ||
344 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi, | |
345 | const struct sr_channel_group *cg) | |
346 | { | |
347 | struct sr_channel *ch; | |
348 | double d; | |
349 | int ret; | |
350 | const char *s; | |
351 | ||
352 | if (sdi->status != SR_ST_ACTIVE) | |
353 | return SR_ERR_DEV_CLOSED; | |
354 | ||
355 | ||
356 | ret = SR_OK; | |
357 | if (!cg) { | |
358 | switch (key) { | |
359 | /* No channel group: global options. */ | |
360 | case SR_CONF_OVER_TEMPERATURE_PROTECTION: | |
361 | s = g_variant_get_boolean(data) ? "ON" : "OFF"; | |
362 | if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION, s) < 0) | |
363 | ret = SR_ERR; | |
364 | break; | |
365 | case SR_CONF_OUTPUT_CHANNEL_CONFIG: | |
366 | s = g_variant_get_string(data, NULL); | |
367 | if (scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_CHANNEL_CONFIG, s) < 0) | |
368 | ret = SR_ERR; | |
369 | break; | |
370 | default: | |
371 | ret = SR_ERR_NA; | |
372 | } | |
373 | } else { | |
374 | /* Channel group specified. */ | |
375 | if (!sdi) | |
376 | return SR_ERR_ARG; | |
377 | if (g_slist_length(cg->channels) > 1) | |
378 | return SR_ERR_NA; | |
379 | ch = cg->channels->data; | |
380 | switch (key) { | |
381 | case SR_CONF_OUTPUT_VOLTAGE_MAX: | |
382 | d = g_variant_get_double(data); | |
383 | if (scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_MAX, ch->name, d) < 0) | |
384 | ret = SR_ERR; | |
385 | break; | |
386 | case SR_CONF_OUTPUT_CURRENT_MAX: | |
387 | d = g_variant_get_double(data); | |
388 | if (scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_MAX, ch->name, d) < 0) | |
389 | ret = SR_ERR; | |
390 | break; | |
391 | case SR_CONF_OUTPUT_ENABLED: | |
392 | s = g_variant_get_boolean(data) ? "ON" : "OFF"; | |
393 | if (scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLED, ch->name, s) < 0) | |
394 | ret = SR_ERR; | |
395 | break; | |
396 | case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED: | |
397 | s = g_variant_get_boolean(data) ? "ON" : "OFF"; | |
398 | if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLED, | |
399 | ch->name, s) < 0) | |
400 | ret = SR_ERR; | |
401 | break; | |
402 | case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD: | |
403 | d = g_variant_get_double(data); | |
404 | if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD, | |
405 | ch->name, d) < 0) | |
406 | ret = SR_ERR; | |
407 | break; | |
408 | case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED: | |
409 | s = g_variant_get_boolean(data) ? "ON" : "OFF"; | |
410 | if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLED, | |
411 | ch->name, s) < 0) | |
412 | ret = SR_ERR; | |
413 | break; | |
414 | case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD: | |
415 | d = g_variant_get_double(data); | |
416 | if (scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD, | |
417 | ch->name, d) < 0) | |
418 | ret = SR_ERR; | |
419 | break; | |
420 | default: | |
421 | ret = SR_ERR_NA; | |
422 | } | |
423 | } | |
424 | ||
425 | return ret; | |
426 | } | |
427 | ||
428 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
429 | const struct sr_channel_group *cg) | |
430 | { | |
431 | struct dev_context *devc; | |
432 | struct sr_channel *ch; | |
433 | struct channel_spec *ch_spec; | |
434 | GVariant *gvar; | |
435 | GVariantBuilder gvb; | |
436 | int ret, i; | |
437 | const char *s[16]; | |
438 | ||
439 | /* Always available, even without sdi. */ | |
440 | if (key == SR_CONF_SCAN_OPTIONS) { | |
441 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
442 | scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); | |
443 | return SR_OK; | |
444 | } | |
445 | ||
446 | if (!sdi) | |
447 | return SR_ERR_ARG; | |
448 | devc = sdi->priv; | |
449 | ||
450 | ret = SR_OK; | |
451 | if (!cg) { | |
452 | /* No channel group: global options. */ | |
453 | switch (key) { | |
454 | case SR_CONF_DEVICE_OPTIONS: | |
455 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
456 | devc->device->devopts, devc->device->num_devopts, | |
457 | sizeof(int32_t)); | |
458 | break; | |
459 | case SR_CONF_OUTPUT_CHANNEL_CONFIG: | |
460 | i = 0; | |
461 | if (devc->device->features & PPS_INDEPENDENT) | |
462 | s[i++] = "Independent"; | |
463 | if (devc->device->features & PPS_SERIES) | |
464 | s[i++] = "Series"; | |
465 | if (devc->device->features & PPS_PARALLEL) | |
466 | s[i++] = "Parallel"; | |
467 | if (i == 0) { | |
468 | /* | |
469 | * Shouldn't happen: independent-only devices | |
470 | * shouldn't advertise this option at all. | |
471 | */ | |
472 | return SR_ERR_NA; | |
473 | } | |
474 | *data = g_variant_new_strv(s, i); | |
475 | break; | |
476 | default: | |
477 | return SR_ERR_NA; | |
478 | } | |
479 | } else { | |
480 | /* Channel group specified. */ | |
481 | if (!sdi) | |
482 | return SR_ERR_ARG; | |
483 | /* | |
484 | * Per-channel-group options depending on a channel are actually | |
485 | * done with the first channel. Channel groups in PPS can have | |
486 | * more than one channel, but they will typically be of equal | |
487 | * specification for use in series or parallel mode. Drop requests | |
488 | * for groups with more than one channel just to make sure. | |
489 | */ | |
490 | if (g_slist_length(cg->channels) > 1) | |
491 | return SR_ERR_NA; | |
492 | ch = cg->channels->data; | |
493 | ||
494 | switch (key) { | |
495 | case SR_CONF_DEVICE_OPTIONS: | |
496 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
497 | devc->device->devopts_cg, devc->device->num_devopts_cg, | |
498 | sizeof(int32_t)); | |
499 | break; | |
500 | case SR_CONF_OUTPUT_VOLTAGE_MAX: | |
501 | ch_spec = &(devc->device->channels[ch->index]); | |
502 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
503 | /* Min, max, write resolution. */ | |
504 | for (i = 0; i < 3; i++) { | |
505 | gvar = g_variant_new_double(ch_spec->voltage[i]); | |
506 | g_variant_builder_add_value(&gvb, gvar); | |
507 | } | |
508 | *data = g_variant_builder_end(&gvb); | |
509 | break; | |
510 | case SR_CONF_OUTPUT_CURRENT_MAX: | |
511 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
512 | /* Min, max, step. */ | |
513 | for (i = 0; i < 3; i++) { | |
514 | ch_spec = &(devc->device->channels[ch->index]); | |
515 | gvar = g_variant_new_double(ch_spec->current[i]); | |
516 | g_variant_builder_add_value(&gvb, gvar); | |
517 | } | |
518 | *data = g_variant_builder_end(&gvb); | |
519 | break; | |
520 | default: | |
521 | return SR_ERR_NA; | |
522 | } | |
523 | } | |
524 | ||
525 | return ret; | |
526 | } | |
527 | ||
528 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
529 | void *cb_data) | |
530 | { | |
531 | struct dev_context *devc; | |
532 | struct sr_scpi_dev_inst *scpi; | |
533 | struct sr_channel *ch; | |
534 | int ret; | |
535 | ||
536 | if (sdi->status != SR_ST_ACTIVE) | |
537 | return SR_ERR_DEV_CLOSED; | |
538 | ||
539 | devc = sdi->priv; | |
540 | scpi = sdi->conn; | |
541 | devc->cb_data = cb_data; | |
542 | ||
543 | if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 100, | |
544 | scpi_pps_receive_data, (void *)sdi)) != SR_OK) | |
545 | return ret; | |
546 | std_session_send_df_header(sdi, LOG_PREFIX); | |
547 | ||
548 | /* Prime the pipe. */ | |
549 | devc->state = STATE_VOLTAGE; | |
550 | ch = sdi->channels->data; | |
551 | devc->cur_channel = ch; | |
552 | scpi_cmd(sdi, SCPI_CMD_GET_MEAS_VOLTAGE, ch->name); | |
553 | ||
554 | return SR_OK; | |
555 | } | |
556 | ||
557 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
558 | { | |
559 | struct dev_context *devc; | |
560 | struct sr_scpi_dev_inst *scpi; | |
561 | float f; | |
562 | ||
563 | (void)cb_data; | |
564 | ||
565 | if (sdi->status != SR_ST_ACTIVE) | |
566 | return SR_ERR_DEV_CLOSED; | |
567 | ||
568 | devc = sdi->priv; | |
569 | scpi = sdi->conn; | |
570 | ||
571 | /* | |
572 | * A requested value is certainly on the way. Retrieve it now, | |
573 | * to avoid leaving the device in a state where it's not expecting | |
574 | * commands. | |
575 | */ | |
576 | sr_scpi_get_float(scpi, NULL, &f); | |
577 | sr_scpi_source_remove(sdi->session, scpi); | |
578 | ||
579 | /* Just in case something is queued up. */ | |
580 | devc->state = STATE_STOP; | |
581 | ||
582 | return SR_OK; | |
583 | } | |
584 | ||
585 | SR_PRIV struct sr_dev_driver scpi_pps_driver_info = { | |
586 | .name = "scpi-pps", | |
587 | .longname = "SCPI PPS", | |
588 | .api_version = 1, | |
589 | .init = init, | |
590 | .cleanup = cleanup, | |
591 | .scan = scan, | |
592 | .dev_list = dev_list, | |
593 | .dev_clear = dev_clear, | |
594 | .config_get = config_get, | |
595 | .config_set = config_set, | |
596 | .config_list = config_list, | |
597 | .dev_open = dev_open, | |
598 | .dev_close = dev_close, | |
599 | .dev_acquisition_start = dev_acquisition_start, | |
600 | .dev_acquisition_stop = dev_acquisition_stop, | |
601 | .priv = NULL, | |
602 | }; |