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scpi-pps: Add SR_CONF_REGULATION for HP 66xxB power supplies.
[libsigrok.git] / src / hardware / scpi-pps / api.c
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2014 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2017 Frank Stettner <frank-stettner@gmx.net>
6 *
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include <config.h>
22#include <string.h>
23#include <strings.h>
24#include "scpi.h"
25#include "protocol.h"
26
27static struct sr_dev_driver scpi_pps_driver_info;
28static struct sr_dev_driver hp_ib_pps_driver_info;
29
30static const uint32_t scanopts[] = {
31 SR_CONF_CONN,
32 SR_CONF_SERIALCOMM,
33};
34
35static const uint32_t drvopts[] = {
36 SR_CONF_POWER_SUPPLY,
37};
38
39static const struct pps_channel_instance pci[] = {
40 { SR_MQ_VOLTAGE, SCPI_CMD_GET_MEAS_VOLTAGE, "V" },
41 { SR_MQ_CURRENT, SCPI_CMD_GET_MEAS_CURRENT, "I" },
42 { SR_MQ_POWER, SCPI_CMD_GET_MEAS_POWER, "P" },
43 { SR_MQ_FREQUENCY, SCPI_CMD_GET_MEAS_FREQUENCY, "F" },
44};
45
46static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi,
47 int (*get_hw_id)(struct sr_scpi_dev_inst *scpi,
48 struct sr_scpi_hw_info **scpi_response))
49{
50 struct dev_context *devc;
51 struct sr_dev_inst *sdi;
52 struct sr_scpi_hw_info *hw_info;
53 struct sr_channel_group *cg;
54 struct sr_channel *ch;
55 const struct scpi_pps *device;
56 struct pps_channel *pch;
57 struct channel_spec *channels;
58 struct channel_group_spec *channel_groups, *cgs;
59 struct pps_channel_group *pcg;
60 GRegex *model_re;
61 GMatchInfo *model_mi;
62 GSList *l;
63 uint64_t mask;
64 unsigned int num_channels, num_channel_groups, ch_num, ch_idx, i, j;
65 int ret;
66 const char *vendor;
67 char ch_name[16];
68
69 if (get_hw_id(scpi, &hw_info) != SR_OK) {
70 sr_info("Couldn't get IDN response.");
71 return NULL;
72 }
73
74 device = NULL;
75 for (i = 0; i < num_pps_profiles; i++) {
76 vendor = sr_vendor_alias(hw_info->manufacturer);
77 if (g_ascii_strcasecmp(vendor, pps_profiles[i].vendor))
78 continue;
79 model_re = g_regex_new(pps_profiles[i].model, 0, 0, NULL);
80 if (g_regex_match(model_re, hw_info->model, 0, &model_mi))
81 device = &pps_profiles[i];
82 g_match_info_unref(model_mi);
83 g_regex_unref(model_re);
84 if (device)
85 break;
86 }
87 if (!device) {
88 sr_scpi_hw_info_free(hw_info);
89 return NULL;
90 }
91
92 sdi = g_malloc0(sizeof(struct sr_dev_inst));
93 sdi->vendor = g_strdup(vendor);
94 sdi->model = g_strdup(hw_info->model);
95 sdi->version = g_strdup(hw_info->firmware_version);
96 sdi->conn = scpi;
97 sdi->driver = &scpi_pps_driver_info;
98 sdi->inst_type = SR_INST_SCPI;
99 sdi->serial_num = g_strdup(hw_info->serial_number);
100
101 devc = g_malloc0(sizeof(struct dev_context));
102 devc->device = device;
103 sr_sw_limits_init(&devc->limits);
104 sdi->priv = devc;
105
106 if (device->num_channels) {
107 /* Static channels and groups. */
108 channels = (struct channel_spec *)device->channels;
109 num_channels = device->num_channels;
110 channel_groups = (struct channel_group_spec *)device->channel_groups;
111 num_channel_groups = device->num_channel_groups;
112 } else {
113 /* Channels and groups need to be probed. */
114 ret = device->probe_channels(sdi, hw_info, &channels, &num_channels,
115 &channel_groups, &num_channel_groups);
116 if (ret != SR_OK) {
117 sr_err("Failed to probe for channels.");
118 return NULL;
119 }
120 /*
121 * Since these were dynamically allocated, we'll need to free them
122 * later.
123 */
124 devc->channels = channels;
125 devc->channel_groups = channel_groups;
126 }
127
128 ch_idx = 0;
129 for (ch_num = 0; ch_num < num_channels; ch_num++) {
130 /* Create one channel per measurable output unit. */
131 for (i = 0; i < ARRAY_SIZE(pci); i++) {
132 if (!sr_scpi_cmd_get(devc->device->commands, pci[i].command))
133 continue;
134 g_snprintf(ch_name, 16, "%s%s", pci[i].prefix,
135 channels[ch_num].name);
136 ch = sr_channel_new(sdi, ch_idx++, SR_CHANNEL_ANALOG, TRUE,
137 ch_name);
138 pch = g_malloc0(sizeof(struct pps_channel));
139 pch->hw_output_idx = ch_num;
140 pch->hwname = channels[ch_num].name;
141 pch->mq = pci[i].mq;
142 ch->priv = pch;
143 }
144 }
145
146 for (i = 0; i < num_channel_groups; i++) {
147 cgs = &channel_groups[i];
148 cg = g_malloc0(sizeof(struct sr_channel_group));
149 cg->name = g_strdup(cgs->name);
150 for (j = 0, mask = 1; j < 64; j++, mask <<= 1) {
151 if (cgs->channel_index_mask & mask) {
152 for (l = sdi->channels; l; l = l->next) {
153 ch = l->data;
154 pch = ch->priv;
155 if (pch->hw_output_idx == j)
156 cg->channels = g_slist_append(cg->channels, ch);
157 }
158 }
159 }
160 pcg = g_malloc0(sizeof(struct pps_channel_group));
161 pcg->features = cgs->features;
162 cg->priv = pcg;
163 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
164 }
165
166 sr_scpi_hw_info_free(hw_info);
167 hw_info = NULL;
168
169 sr_scpi_cmd(sdi, devc->device->commands, 0, NULL, SCPI_CMD_LOCAL);
170
171 return sdi;
172}
173
174static gchar *hpib_get_revision(struct sr_scpi_dev_inst *scpi)
175{
176 int ret;
177 gboolean matches;
178 char *response;
179 GRegex *version_regex;
180
181 ret = sr_scpi_get_string(scpi, "ROM?", &response);
182 if (ret != SR_OK && !response)
183 return NULL;
184
185 /* Example version string: "B01 B01" */
186 version_regex = g_regex_new("[A-Z][0-9]{2} [A-Z][0-9]{2}", 0, 0, NULL);
187 matches = g_regex_match(version_regex, response, 0, NULL);
188 g_regex_unref(version_regex);
189
190 if (!matches) {
191 /* Not a valid version string. Ignore it. */
192 g_free(response);
193 response = NULL;
194 } else {
195 /* Replace space with dot. */
196 response[3] = '.';
197 }
198
199 return response;
200}
201
202/*
203 * This function assumes the response is in the form "HP<model_number>"
204 *
205 * HP made many GPIB (then called HP-IB) instruments before the SCPI command
206 * set was introduced into the standard. We haven't seen any non-HP instruments
207 * which respond to the "ID?" query, so assume all are HP for now.
208 */
209static int hpib_get_hw_id(struct sr_scpi_dev_inst *scpi,
210 struct sr_scpi_hw_info **scpi_response)
211{
212 int ret;
213 char *response;
214 struct sr_scpi_hw_info *hw_info;
215
216 ret = sr_scpi_get_string(scpi, "ID?", &response);
217 if ((ret != SR_OK) || !response)
218 return SR_ERR;
219
220 hw_info = g_malloc0(sizeof(struct sr_scpi_hw_info));
221
222 *scpi_response = hw_info;
223 hw_info->model = response;
224 hw_info->firmware_version = hpib_get_revision(scpi);
225 hw_info->manufacturer = g_strdup("HP");
226
227 return SR_OK;
228}
229
230static struct sr_dev_inst *probe_scpi_pps_device(struct sr_scpi_dev_inst *scpi)
231{
232 return probe_device(scpi, sr_scpi_get_hw_id);
233}
234
235static struct sr_dev_inst *probe_hpib_pps_device(struct sr_scpi_dev_inst *scpi)
236{
237 return probe_device(scpi, hpib_get_hw_id);
238}
239
240static GSList *scan_scpi_pps(struct sr_dev_driver *di, GSList *options)
241{
242 return sr_scpi_scan(di->context, options, probe_scpi_pps_device);
243}
244
245static GSList *scan_hpib_pps(struct sr_dev_driver *di, GSList *options)
246{
247 return sr_scpi_scan(di->context, options, probe_hpib_pps_device);
248}
249
250static int dev_open(struct sr_dev_inst *sdi)
251{
252 struct dev_context *devc;
253 struct sr_scpi_dev_inst *scpi;
254 GVariant *beeper;
255
256 scpi = sdi->conn;
257 if (sr_scpi_open(scpi) < 0)
258 return SR_ERR;
259
260 devc = sdi->priv;
261 sr_scpi_cmd(sdi, devc->device->commands, 0, NULL, SCPI_CMD_REMOTE);
262 devc->beeper_was_set = FALSE;
263 if (sr_scpi_cmd_resp(sdi, devc->device->commands, 0, NULL,
264 &beeper, G_VARIANT_TYPE_BOOLEAN, SCPI_CMD_BEEPER) == SR_OK) {
265 if (g_variant_get_boolean(beeper)) {
266 devc->beeper_was_set = TRUE;
267 sr_scpi_cmd(sdi, devc->device->commands,
268 0, NULL, SCPI_CMD_BEEPER_DISABLE);
269 }
270 g_variant_unref(beeper);
271 }
272
273 return SR_OK;
274}
275
276static int dev_close(struct sr_dev_inst *sdi)
277{
278 struct sr_scpi_dev_inst *scpi;
279 struct dev_context *devc;
280
281 devc = sdi->priv;
282 scpi = sdi->conn;
283
284 if (!scpi)
285 return SR_ERR_BUG;
286
287 if (devc->beeper_was_set)
288 sr_scpi_cmd(sdi, devc->device->commands,
289 0, NULL, SCPI_CMD_BEEPER_ENABLE);
290 sr_scpi_cmd(sdi, devc->device->commands, 0, NULL, SCPI_CMD_LOCAL);
291
292 return sr_scpi_close(scpi);
293}
294
295static void clear_helper(struct dev_context *devc)
296{
297 g_free(devc->channels);
298 g_free(devc->channel_groups);
299}
300
301static int dev_clear(const struct sr_dev_driver *di)
302{
303 return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
304}
305
306static int config_get(uint32_t key, GVariant **data,
307 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
308{
309 struct dev_context *devc;
310 const GVariantType *gvtype;
311 unsigned int i;
312 int channel_group_cmd;
313 char *channel_group_name;
314 int cmd, ret;
315 const char *s;
316 int oper_cond;
317
318 if (!sdi)
319 return SR_ERR_ARG;
320
321 devc = sdi->priv;
322
323 if (cg) {
324 /*
325 * These options only apply to channel groups with a single
326 * channel -- they're per-channel settings for the device.
327 */
328
329 /*
330 * Config keys are handled below depending on whether a channel
331 * group was provided by the frontend. However some of these
332 * take a CG on one PPS but not on others. Check the device's
333 * profile for that here, and NULL out the channel group as needed.
334 */
335 for (i = 0; i < devc->device->num_devopts; i++) {
336 if (devc->device->devopts[i] == key) {
337 cg = NULL;
338 break;
339 }
340 }
341 }
342
343 gvtype = NULL;
344 cmd = -1;
345 switch (key) {
346 case SR_CONF_ENABLED:
347 gvtype = G_VARIANT_TYPE_BOOLEAN;
348 cmd = SCPI_CMD_GET_OUTPUT_ENABLED;
349 break;
350 case SR_CONF_VOLTAGE:
351 gvtype = G_VARIANT_TYPE_DOUBLE;
352 cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
353 break;
354 case SR_CONF_VOLTAGE_TARGET:
355 gvtype = G_VARIANT_TYPE_DOUBLE;
356 cmd = SCPI_CMD_GET_VOLTAGE_TARGET;
357 break;
358 case SR_CONF_OUTPUT_FREQUENCY:
359 gvtype = G_VARIANT_TYPE_DOUBLE;
360 cmd = SCPI_CMD_GET_MEAS_FREQUENCY;
361 break;
362 case SR_CONF_OUTPUT_FREQUENCY_TARGET:
363 gvtype = G_VARIANT_TYPE_DOUBLE;
364 cmd = SCPI_CMD_GET_FREQUENCY_TARGET;
365 break;
366 case SR_CONF_CURRENT:
367 gvtype = G_VARIANT_TYPE_DOUBLE;
368 cmd = SCPI_CMD_GET_MEAS_CURRENT;
369 break;
370 case SR_CONF_CURRENT_LIMIT:
371 gvtype = G_VARIANT_TYPE_DOUBLE;
372 cmd = SCPI_CMD_GET_CURRENT_LIMIT;
373 break;
374 case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
375 gvtype = G_VARIANT_TYPE_BOOLEAN;
376 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED;
377 break;
378 case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE:
379 gvtype = G_VARIANT_TYPE_BOOLEAN;
380 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE;
381 break;
382 case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
383 gvtype = G_VARIANT_TYPE_DOUBLE;
384 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD;
385 break;
386 case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
387 gvtype = G_VARIANT_TYPE_BOOLEAN;
388 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED;
389 break;
390 case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE:
391 gvtype = G_VARIANT_TYPE_BOOLEAN;
392 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE;
393 break;
394 case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
395 gvtype = G_VARIANT_TYPE_DOUBLE;
396 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD;
397 break;
398 case SR_CONF_OVER_TEMPERATURE_PROTECTION:
399 gvtype = G_VARIANT_TYPE_BOOLEAN;
400 cmd = SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION;
401 break;
402 case SR_CONF_REGULATION:
403 gvtype = G_VARIANT_TYPE_STRING;
404 cmd = SCPI_CMD_GET_OUTPUT_REGULATION;
405 break;
406 default:
407 return sr_sw_limits_config_get(&devc->limits, key, data);
408 }
409 if (!gvtype)
410 return SR_ERR_NA;
411
412 channel_group_cmd = 0;
413 channel_group_name = NULL;
414 if (cg) {
415 channel_group_cmd = SCPI_CMD_SELECT_CHANNEL;
416 channel_group_name = g_strdup(cg->name);
417 }
418
419 ret = sr_scpi_cmd_resp(sdi, devc->device->commands,
420 channel_group_cmd, channel_group_name, data, gvtype, cmd);
421 g_free(channel_group_name);
422
423 /*
424 * Handle special cases
425 */
426
427 if (cmd == SCPI_CMD_GET_OUTPUT_REGULATION) {
428 if (devc->device->dialect == SCPI_DIALECT_PHILIPS) {
429 /*
430 * The Philips PM2800 series returns VOLT/CURR. We always return
431 * a GVariant string in the Rigol notation (CV/CC/UR).
432 */
433 s = g_variant_get_string(*data, NULL);
434 if (!g_strcmp0(s, "VOLT")) {
435 g_variant_unref(*data);
436 *data = g_variant_new_string("CV");
437 } else if (!g_strcmp0(s, "CURR")) {
438 g_variant_unref(*data);
439 *data = g_variant_new_string("CC");
440 }
441 }
442 if (devc->device->dialect == SCPI_DIALECT_HP_66XXB) {
443 /* Evaluate Operational Status Register from a HP 66xxB. */
444 s = g_variant_get_string(*data, NULL);
445 sr_atoi(s, &oper_cond);
446 g_variant_unref(*data);
447 if (oper_cond & (1 << 8))
448 *data = g_variant_new_string("CV");
449 else if (oper_cond & (1 << 10))
450 *data = g_variant_new_string("CC");
451 else if (oper_cond & (1 << 11))
452 *data = g_variant_new_string("CC-");
453 else
454 *data = g_variant_new_string("UR");
455 }
456
457 s = g_variant_get_string(*data, NULL);
458 if (g_strcmp0(s, "CV") && g_strcmp0(s, "CC") &&
459 g_strcmp0(s, "CC-") && g_strcmp0(s, "UR")) {
460
461 sr_err("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
462 ret = SR_ERR_DATA;
463 }
464 }
465
466 return ret;
467}
468
469static int config_set(uint32_t key, GVariant *data,
470 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
471{
472 struct dev_context *devc;
473 double d;
474 int channel_group_cmd;
475 char *channel_group_name;
476 int ret;
477
478 if (!sdi)
479 return SR_ERR_ARG;
480
481 channel_group_cmd = 0;
482 channel_group_name = NULL;
483 if (cg) {
484 channel_group_cmd = SCPI_CMD_SELECT_CHANNEL;
485 channel_group_name = g_strdup(cg->name);
486 }
487
488 devc = sdi->priv;
489
490 switch (key) {
491 case SR_CONF_ENABLED:
492 if (g_variant_get_boolean(data))
493 ret = sr_scpi_cmd(sdi, devc->device->commands,
494 channel_group_cmd, channel_group_name,
495 SCPI_CMD_SET_OUTPUT_ENABLE);
496 else
497 ret = sr_scpi_cmd(sdi, devc->device->commands,
498 channel_group_cmd, channel_group_name,
499 SCPI_CMD_SET_OUTPUT_DISABLE);
500 break;
501 case SR_CONF_VOLTAGE_TARGET:
502 d = g_variant_get_double(data);
503 ret = sr_scpi_cmd(sdi, devc->device->commands,
504 channel_group_cmd, channel_group_name,
505 SCPI_CMD_SET_VOLTAGE_TARGET, d);
506 break;
507 case SR_CONF_OUTPUT_FREQUENCY_TARGET:
508 d = g_variant_get_double(data);
509 ret = sr_scpi_cmd(sdi, devc->device->commands,
510 channel_group_cmd, channel_group_name,
511 SCPI_CMD_SET_FREQUENCY_TARGET, d);
512 break;
513 case SR_CONF_CURRENT_LIMIT:
514 d = g_variant_get_double(data);
515 ret = sr_scpi_cmd(sdi, devc->device->commands,
516 channel_group_cmd, channel_group_name,
517 SCPI_CMD_SET_CURRENT_LIMIT, d);
518 break;
519 case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
520 if (g_variant_get_boolean(data))
521 ret = sr_scpi_cmd(sdi, devc->device->commands,
522 channel_group_cmd, channel_group_name,
523 SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLE);
524 else
525 ret = sr_scpi_cmd(sdi, devc->device->commands,
526 channel_group_cmd, channel_group_name,
527 SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_DISABLE);
528 break;
529 case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
530 d = g_variant_get_double(data);
531 ret = sr_scpi_cmd(sdi, devc->device->commands,
532 channel_group_cmd, channel_group_name,
533 SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD, d);
534 break;
535 case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
536 if (g_variant_get_boolean(data))
537 ret = sr_scpi_cmd(sdi, devc->device->commands,
538 channel_group_cmd, channel_group_name,
539 SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLE);
540 else
541 ret = sr_scpi_cmd(sdi, devc->device->commands,
542 channel_group_cmd, channel_group_name,
543 SCPI_CMD_SET_OVER_CURRENT_PROTECTION_DISABLE);
544 break;
545 case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
546 d = g_variant_get_double(data);
547 ret = sr_scpi_cmd(sdi, devc->device->commands,
548 channel_group_cmd, channel_group_name,
549 SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD, d);
550 break;
551 case SR_CONF_OVER_TEMPERATURE_PROTECTION:
552 if (g_variant_get_boolean(data))
553 ret = sr_scpi_cmd(sdi, devc->device->commands,
554 channel_group_cmd, channel_group_name,
555 SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_ENABLE);
556 else
557 ret = sr_scpi_cmd(sdi, devc->device->commands,
558 channel_group_cmd, channel_group_name,
559 SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_DISABLE);
560 break;
561 default:
562 ret = sr_sw_limits_config_set(&devc->limits, key, data);
563 }
564
565 g_free(channel_group_name);
566
567 return ret;
568}
569
570static int config_list(uint32_t key, GVariant **data,
571 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
572{
573 struct dev_context *devc;
574 struct sr_channel *ch;
575 const struct channel_spec *ch_spec;
576 int i;
577 const char *s[16];
578
579 devc = (sdi) ? sdi->priv : NULL;
580
581 if (!cg) {
582 switch (key) {
583 case SR_CONF_SCAN_OPTIONS:
584 case SR_CONF_DEVICE_OPTIONS:
585 return std_opts_config_list(key, data, sdi, cg,
586 ARRAY_AND_SIZE(scanopts),
587 ARRAY_AND_SIZE(drvopts),
588 (devc && devc->device) ? devc->device->devopts : NULL,
589 (devc && devc->device) ? devc->device->num_devopts : 0);
590 break;
591 case SR_CONF_CHANNEL_CONFIG:
592 if (!devc || !devc->device)
593 return SR_ERR_ARG;
594 /* Not used. */
595 i = 0;
596 if (devc->device->features & PPS_INDEPENDENT)
597 s[i++] = "Independent";
598 if (devc->device->features & PPS_SERIES)
599 s[i++] = "Series";
600 if (devc->device->features & PPS_PARALLEL)
601 s[i++] = "Parallel";
602 if (i == 0) {
603 /*
604 * Shouldn't happen: independent-only devices
605 * shouldn't advertise this option at all.
606 */
607 return SR_ERR_NA;
608 }
609 *data = g_variant_new_strv(s, i);
610 break;
611 default:
612 return SR_ERR_NA;
613 }
614 } else {
615 /*
616 * Per-channel-group options depending on a channel are actually
617 * done with the first channel. Channel groups in PPS can have
618 * more than one channel, but they will typically be of equal
619 * specification for use in series or parallel mode.
620 */
621 ch = cg->channels->data;
622 if (!devc || !devc->device)
623 return SR_ERR_ARG;
624 ch_spec = &(devc->device->channels[ch->index]);
625
626 switch (key) {
627 case SR_CONF_DEVICE_OPTIONS:
628 *data = std_gvar_array_u32(devc->device->devopts_cg, devc->device->num_devopts_cg);
629 break;
630 case SR_CONF_VOLTAGE_TARGET:
631 *data = std_gvar_min_max_step_array(ch_spec->voltage);
632 break;
633 case SR_CONF_OUTPUT_FREQUENCY_TARGET:
634 *data = std_gvar_min_max_step_array(ch_spec->frequency);
635 break;
636 case SR_CONF_CURRENT_LIMIT:
637 *data = std_gvar_min_max_step_array(ch_spec->current);
638 break;
639 case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
640 *data = std_gvar_min_max_step_array(ch_spec->ovp);
641 break;
642 case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
643 *data = std_gvar_min_max_step_array(ch_spec->ocp);
644 break;
645 default:
646 return SR_ERR_NA;
647 }
648 }
649
650 return SR_OK;
651}
652
653static int dev_acquisition_start(const struct sr_dev_inst *sdi)
654{
655 struct dev_context *devc;
656 struct sr_scpi_dev_inst *scpi;
657 int ret;
658
659 devc = sdi->priv;
660 scpi = sdi->conn;
661
662 /* Prime the pipe with the first channel. */
663 devc->cur_acquisition_channel = sr_next_enabled_channel(sdi, NULL);
664
665 if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10,
666 scpi_pps_receive_data, (void *)sdi)) != SR_OK)
667 return ret;
668 std_session_send_df_header(sdi);
669 sr_sw_limits_acquisition_start(&devc->limits);
670
671 return SR_OK;
672}
673
674static int dev_acquisition_stop(struct sr_dev_inst *sdi)
675{
676 struct sr_scpi_dev_inst *scpi;
677
678 scpi = sdi->conn;
679
680 sr_scpi_source_remove(sdi->session, scpi);
681
682 std_session_send_df_end(sdi);
683
684 return SR_OK;
685}
686
687static struct sr_dev_driver scpi_pps_driver_info = {
688 .name = "scpi-pps",
689 .longname = "SCPI PPS",
690 .api_version = 1,
691 .init = std_init,
692 .cleanup = std_cleanup,
693 .scan = scan_scpi_pps,
694 .dev_list = std_dev_list,
695 .dev_clear = dev_clear,
696 .config_get = config_get,
697 .config_set = config_set,
698 .config_list = config_list,
699 .dev_open = dev_open,
700 .dev_close = dev_close,
701 .dev_acquisition_start = dev_acquisition_start,
702 .dev_acquisition_stop = dev_acquisition_stop,
703 .context = NULL,
704};
705
706static struct sr_dev_driver hp_ib_pps_driver_info = {
707 .name = "hpib-pps",
708 .longname = "HP-IB PPS",
709 .api_version = 1,
710 .init = std_init,
711 .cleanup = std_cleanup,
712 .scan = scan_hpib_pps,
713 .dev_list = std_dev_list,
714 .dev_clear = dev_clear,
715 .config_get = config_get,
716 .config_set = config_set,
717 .config_list = config_list,
718 .dev_open = dev_open,
719 .dev_close = dev_close,
720 .dev_acquisition_start = dev_acquisition_start,
721 .dev_acquisition_stop = dev_acquisition_stop,
722 .context = NULL,
723};
724SR_REGISTER_DEV_DRIVER(scpi_pps_driver_info);
725SR_REGISTER_DEV_DRIVER(hp_ib_pps_driver_info);
Hardware access and backend lib