src/hardware/scpi-pps/api.c

   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 uint32_t scanopts[] = {
  29         SR_CONF_CONN,
  30         SR_CONF_SERIALCOMM,
  31 };
  32
  33 static const uint32_t devopts_driver[] = {
  34         SR_CONF_POWER_SUPPLY,
  35         SR_CONF_CONTINUOUS,
  36 };
  37
  38 static struct pps_channel_instance pci[] = {
  39         { SR_MQ_VOLTAGE, SCPI_CMD_GET_MEAS_VOLTAGE, "V" },
  40         { SR_MQ_CURRENT, SCPI_CMD_GET_MEAS_CURRENT, "I" },
  41         { SR_MQ_POWER, SCPI_CMD_GET_MEAS_POWER, "P" },
  42 };
  43
  44 static int init(struct sr_context *sr_ctx)
  45 {
  46         return std_init(sr_ctx, di, LOG_PREFIX);
  47 }
  48
  49 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
  50 {
  51         struct dev_context *devc;
  52         struct sr_dev_inst *sdi;
  53         struct sr_scpi_hw_info *hw_info;
  54         struct sr_channel_group *cg;
  55         struct sr_channel *ch;
  56         const struct scpi_pps *device;
  57         struct pps_channel *pch;
  58         struct channel_spec *channels;
  59         struct channel_group_spec *channel_groups, *cgs;
  60         struct pps_channel_group *pcg;
  61         GRegex *model_re;
  62         GMatchInfo *model_mi;
  63         GSList *l;
  64         uint64_t mask;
  65         unsigned int num_channels, num_channel_groups, ch_num, ch_idx, i, j;
  66         int ret;
  67         const char *vendor;
  68         char ch_name[16];
  69
  70         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
  71                 sr_info("Couldn't get IDN response.");
  72                 return NULL;
  73         }
  74
  75         device = NULL;
  76         for (i = 0; i < num_pps_profiles; i++) {
  77                 vendor = get_vendor(hw_info->manufacturer);
  78                 if (strcasecmp(vendor, pps_profiles[i].vendor))
  79                         continue;
  80                 model_re = g_regex_new(pps_profiles[i].model, 0, 0, NULL);
  81                 if (g_regex_match(model_re, hw_info->model, 0, &model_mi))
  82                         device = &pps_profiles[i];
  83                 g_match_info_unref(model_mi);
  84                 g_regex_unref(model_re);
  85                 if (device)
  86                         break;
  87         }
  88         if (!device) {
  89                 sr_scpi_hw_info_free(hw_info);
  90                 return NULL;
  91         }
  92
  93         sdi = sr_dev_inst_new(SR_ST_ACTIVE, vendor, hw_info->model,
  94                         hw_info->firmware_version);
  95         sdi->conn = scpi;
  96         sdi->driver = di;
  97         sdi->inst_type = SR_INST_SCPI;
  98         sdi->serial_num = g_strdup(hw_info->serial_number);
  99
 100         devc = g_malloc0(sizeof(struct dev_context));
 101         devc->device = device;
 102         sdi->priv = devc;
 103
 104         if (device->num_channels) {
 105                 /* Static channels and groups. */
 106                 channels = device->channels;
 107                 num_channels = device->num_channels;
 108                 channel_groups = device->channel_groups;
 109                 num_channel_groups = device->num_channel_groups;
 110         } else {
 111                 /* Channels and groups need to be probed. */
 112                 ret = device->probe_channels(sdi, hw_info, &channels, &num_channels,
 113                                 &channel_groups, &num_channel_groups);
 114                 if (ret != SR_OK) {
 115                         sr_err("Failed to probe for channels.");
 116                         return NULL;
 117                 }
 118                 /*
 119                  * Since these were dynamically allocated, we'll need to free them
 120                  * later.
 121                  */
 122                 devc->channels = channels;
 123                 devc->channel_groups = channel_groups;
 124         }
 125
 126         ch_idx = 0;
 127         for (ch_num = 0; ch_num < num_channels; ch_num++) {
 128                 /* Create one channel per measurable output unit. */
 129                 for (i = 0; i < ARRAY_SIZE(pci); i++) {
 130                         if (!scpi_cmd_get(sdi, pci[i].command))
 131                                 continue;
 132                         g_snprintf(ch_name, 16, "%s%s", pci[i].prefix,
 133                                         channels[ch_num].name);
 134                         ch = sr_channel_new(ch_idx++, SR_CHANNEL_ANALOG, TRUE, ch_name);
 135                         pch = g_malloc0(sizeof(struct pps_channel));
 136                         pch->hw_output_idx = ch_num;
 137                         pch->hwname = channels[ch_num].name;
 138                         pch->mq = pci[i].mq;
 139                         ch->priv = pch;
 140                         sdi->channels = g_slist_append(sdi->channels, ch);
 141                 }
 142         }
 143
 144         for (i = 0; i < num_channel_groups; i++) {
 145                 cgs = &channel_groups[i];
 146                 cg = g_malloc0(sizeof(struct sr_channel_group));
 147                 cg->name = g_strdup(cgs->name);
 148                 for (j = 0, mask = 1; j < 64; j++, mask <<= 1) {
 149                         if (cgs->channel_index_mask & mask) {
 150                                 for (l = sdi->channels; l; l = l->next) {
 151                                         ch = l->data;
 152                                         pch = ch->priv;
 153                                         if (pch->hw_output_idx == j)
 154                                                 cg->channels = g_slist_append(cg->channels, ch);
 155                                 }
 156                         }
 157                 }
 158                 pcg = g_malloc0(sizeof(struct pps_channel_group));
 159                 pcg->features = cgs->features;
 160                 cg->priv = pcg;
 161                 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
 162         }
 163
 164         sr_scpi_hw_info_free(hw_info);
 165         hw_info = NULL;
 166
 167         scpi_cmd(sdi, SCPI_CMD_LOCAL);
 168         sr_scpi_close(scpi);
 169
 170         return sdi;
 171 }
 172
 173 static GSList *scan(GSList *options)
 174 {
 175         return sr_scpi_scan(di->priv, options, probe_device);
 176 }
 177
 178 static GSList *dev_list(void)
 179 {
 180         return ((struct drv_context *)(di->priv))->instances;
 181 }
 182
 183 static int dev_clear(void)
 184 {
 185         return std_dev_clear(di, NULL);
 186 }
 187
 188 static int dev_open(struct sr_dev_inst *sdi)
 189 {
 190         struct dev_context *devc;
 191         struct sr_scpi_dev_inst *scpi;
 192         GVariant *beeper;
 193
 194         if (sdi->status != SR_ST_ACTIVE)
 195                 return SR_ERR;
 196
 197         scpi = sdi->conn;
 198         if (sr_scpi_open(scpi) < 0)
 199                 return SR_ERR;
 200
 201         sdi->status = SR_ST_ACTIVE;
 202
 203         scpi_cmd(sdi, SCPI_CMD_REMOTE);
 204         devc = sdi->priv;
 205         devc->beeper_was_set = FALSE;
 206         if (scpi_cmd_resp(sdi, &beeper, G_VARIANT_TYPE_BOOLEAN, SCPI_CMD_BEEPER) == SR_OK) {
 207                 if (g_variant_get_boolean(beeper)) {
 208                         devc->beeper_was_set = TRUE;
 209                         scpi_cmd(sdi, SCPI_CMD_BEEPER_DISABLE);
 210                 }
 211                 g_variant_unref(beeper);
 212         }
 213
 214         return SR_OK;
 215 }
 216
 217 static int dev_close(struct sr_dev_inst *sdi)
 218 {
 219         struct sr_scpi_dev_inst *scpi;
 220         struct dev_context *devc;
 221
 222         if (sdi->status != SR_ST_ACTIVE)
 223                 return SR_ERR_DEV_CLOSED;
 224
 225         devc = sdi->priv;
 226         scpi = sdi->conn;
 227         if (scpi) {
 228                 if (devc->beeper_was_set)
 229                         scpi_cmd(sdi, SCPI_CMD_BEEPER_ENABLE);
 230                 scpi_cmd(sdi, SCPI_CMD_LOCAL);
 231                 sr_scpi_close(scpi);
 232                 sdi->status = SR_ST_INACTIVE;
 233         }
 234
 235         return SR_OK;
 236 }
 237
 238 static void clear_helper(void *priv)
 239 {
 240         struct dev_context *devc;
 241
 242         devc = priv;
 243         g_free(devc->channels);
 244         g_free(devc->channel_groups);
 245         g_free(devc);
 246 }
 247
 248 static int cleanup(void)
 249 {
 250         return std_dev_clear(di, clear_helper);
 251 }
 252
 253 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 254                 const struct sr_channel_group *cg)
 255 {
 256         struct dev_context *devc;
 257         const GVariantType *gvtype;
 258         unsigned int i;
 259         int cmd, ret;
 260
 261         if (!sdi)
 262                 return SR_ERR_ARG;
 263
 264         devc = sdi->priv;
 265
 266         if (cg) {
 267                 /*
 268                  * These options only apply to channel groups with a single
 269                  * channel -- they're per-channel settings for the device.
 270                  */
 271
 272                 /*
 273                  * Config keys are handled below depending on whether a channel
 274                  * group was provided by the frontend. However some of these
 275                  * take a CG on one PPS but not on others. Check the device's
 276                  * profile for that here, and NULL out the channel group as needed.
 277                  */
 278                 for (i = 0; i < devc->device->num_devopts; i++) {
 279                         if (devc->device->devopts[i] == key) {
 280                                 cg = NULL;
 281                                 break;
 282                         }
 283                 }
 284         }
 285
 286         gvtype = NULL;
 287         cmd = -1;
 288         switch (key) {
 289         case SR_CONF_OUTPUT_ENABLED:
 290                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 291                 cmd = SCPI_CMD_GET_OUTPUT_ENABLED;
 292                 break;
 293         case SR_CONF_OUTPUT_VOLTAGE:
 294                 gvtype = G_VARIANT_TYPE_DOUBLE;
 295                 cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
 296                 break;
 297         case SR_CONF_OUTPUT_VOLTAGE_TARGET:
 298                 gvtype = G_VARIANT_TYPE_DOUBLE;
 299                 cmd = SCPI_CMD_GET_VOLTAGE_TARGET;
 300                 break;
 301         case SR_CONF_OUTPUT_CURRENT:
 302                 gvtype = G_VARIANT_TYPE_DOUBLE;
 303                 cmd = SCPI_CMD_GET_MEAS_CURRENT;
 304                 break;
 305         case SR_CONF_OUTPUT_CURRENT_LIMIT:
 306                 gvtype = G_VARIANT_TYPE_DOUBLE;
 307                 cmd = SCPI_CMD_GET_CURRENT_LIMIT;
 308                 break;
 309         case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
 310                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 311                 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED;
 312                 break;
 313         case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE:
 314                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 315                 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE;
 316                 break;
 317         case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
 318                 gvtype = G_VARIANT_TYPE_DOUBLE;
 319                 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD;
 320                 break;
 321         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 322                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 323                 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED;
 324                 break;
 325         case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE:
 326                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 327                 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE;
 328                 break;
 329         case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
 330                 gvtype = G_VARIANT_TYPE_DOUBLE;
 331                 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD;
 332                 break;
 333         case SR_CONF_OVER_TEMPERATURE_PROTECTION:
 334                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 335                 cmd = SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION;
 336                 break;
 337         case SR_CONF_OUTPUT_REGULATION:
 338                 gvtype = G_VARIANT_TYPE_STRING;
 339                 cmd = SCPI_CMD_GET_OUTPUT_REGULATION;
 340         }
 341         if (gvtype) {
 342                 if (cg)
 343                         select_channel(sdi, cg->channels->data);
 344                 ret = scpi_cmd_resp(sdi, data, gvtype, cmd);
 345         } else
 346                 ret = SR_ERR_NA;
 347
 348         return ret;
 349 }
 350
 351 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 352                 const struct sr_channel_group *cg)
 353 {
 354         double d;
 355         int ret;
 356
 357         if (!sdi)
 358                 return SR_ERR_ARG;
 359
 360         if (sdi->status != SR_ST_ACTIVE)
 361                 return SR_ERR_DEV_CLOSED;
 362
 363         if (cg)
 364                 /* Channel group specified. */
 365                 select_channel(sdi, cg->channels->data);
 366
 367         ret = SR_OK;
 368         switch (key) {
 369         case SR_CONF_OUTPUT_ENABLED:
 370                 if (g_variant_get_boolean(data))
 371                         ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLE);
 372                 else
 373                         ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_DISABLE);
 374                 break;
 375         case SR_CONF_OUTPUT_VOLTAGE_TARGET:
 376                 d = g_variant_get_double(data);
 377                 ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_TARGET, d);
 378                 break;
 379         case SR_CONF_OUTPUT_CURRENT_LIMIT:
 380                 d = g_variant_get_double(data);
 381                 ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_LIMIT, d);
 382                 break;
 383         case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
 384                 if (g_variant_get_boolean(data))
 385                         ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLE);
 386                 else
 387                         ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_DISABLE);
 388                 break;
 389         case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
 390                 d = g_variant_get_double(data);
 391                 ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD, d);
 392                 break;
 393         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 394                 if (g_variant_get_boolean(data))
 395                         ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLE);
 396                 else
 397                         ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_DISABLE);
 398                 break;
 399         case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
 400                 d = g_variant_get_double(data);
 401                 ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD, d);
 402                 break;
 403         case SR_CONF_OVER_TEMPERATURE_PROTECTION:
 404                 if (g_variant_get_boolean(data))
 405                         ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_ENABLE);
 406                 else
 407                         ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_DISABLE);
 408                 break;
 409         default:
 410                 ret = SR_ERR_NA;
 411         }
 412
 413         return ret;
 414 }
 415
 416 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 417                 const struct sr_channel_group *cg)
 418 {
 419         struct dev_context *devc;
 420         struct sr_channel *ch;
 421         struct channel_spec *ch_spec;
 422         GVariant *gvar;
 423         GVariantBuilder gvb;
 424         int ret, i;
 425         const char *s[16];
 426
 427         /* Always available, even without sdi. */
 428         if (key == SR_CONF_SCAN_OPTIONS) {
 429                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 430                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 431                 return SR_OK;
 432         } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
 433                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 434                                 devopts_driver, ARRAY_SIZE(devopts_driver), sizeof(uint32_t));
 435                 return SR_OK;
 436         }
 437
 438         if (!sdi)
 439                 return SR_ERR_ARG;
 440         devc = sdi->priv;
 441
 442         ret = SR_OK;
 443         if (!cg) {
 444                 /* No channel group: global options. */
 445                 switch (key) {
 446                 case SR_CONF_DEVICE_OPTIONS:
 447                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 448                                         devc->device->devopts, devc->device->num_devopts,
 449                                         sizeof(uint32_t));
 450                         break;
 451                 case SR_CONF_OUTPUT_CHANNEL_CONFIG:
 452                         /* Not used. */
 453                         i = 0;
 454                         if (devc->device->features & PPS_INDEPENDENT)
 455                                 s[i++] = "Independent";
 456                         if (devc->device->features & PPS_SERIES)
 457                                 s[i++] = "Series";
 458                         if (devc->device->features & PPS_PARALLEL)
 459                                 s[i++] = "Parallel";
 460                         if (i == 0) {
 461                                 /*
 462                                  * Shouldn't happen: independent-only devices
 463                                  * shouldn't advertise this option at all.
 464                                  */
 465                                 return SR_ERR_NA;
 466                         }
 467                         *data = g_variant_new_strv(s, i);
 468                         break;
 469                 default:
 470                         return SR_ERR_NA;
 471                 }
 472         } else {
 473                 /* Channel group specified. */
 474                 /*
 475                  * Per-channel-group options depending on a channel are actually
 476                  * done with the first channel. Channel groups in PPS can have
 477                  * more than one channel, but they will typically be of equal
 478                  * specification for use in series or parallel mode.
 479                  */
 480                 ch = cg->channels->data;
 481
 482                 switch (key) {
 483                 case SR_CONF_DEVICE_OPTIONS:
 484                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 485                                         devc->device->devopts_cg, devc->device->num_devopts_cg,
 486                                         sizeof(uint32_t));
 487                         break;
 488                 case SR_CONF_OUTPUT_VOLTAGE_TARGET:
 489                         ch_spec = &(devc->device->channels[ch->index]);
 490                         g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 491                         /* Min, max, write resolution. */
 492                         for (i = 0; i < 3; i++) {
 493                                 gvar = g_variant_new_double(ch_spec->voltage[i]);
 494                                 g_variant_builder_add_value(&gvb, gvar);
 495                         }
 496                         *data = g_variant_builder_end(&gvb);
 497                         break;
 498                 case SR_CONF_OUTPUT_CURRENT_LIMIT:
 499                         g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 500                         /* Min, max, step. */
 501                         for (i = 0; i < 3; i++) {
 502                                 ch_spec = &(devc->device->channels[ch->index]);
 503                                 gvar = g_variant_new_double(ch_spec->current[i]);
 504                                 g_variant_builder_add_value(&gvb, gvar);
 505                         }
 506                         *data = g_variant_builder_end(&gvb);
 507                         break;
 508                 default:
 509                         return SR_ERR_NA;
 510                 }
 511         }
 512
 513         return ret;
 514 }
 515
 516 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
 517                 void *cb_data)
 518 {
 519         struct dev_context *devc;
 520         struct sr_scpi_dev_inst *scpi;
 521         struct sr_channel *ch;
 522         struct pps_channel *pch;
 523         int cmd, ret;
 524
 525         if (sdi->status != SR_ST_ACTIVE)
 526                 return SR_ERR_DEV_CLOSED;
 527
 528         devc = sdi->priv;
 529         scpi = sdi->conn;
 530         devc->cb_data = cb_data;
 531
 532         if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10,
 533                         scpi_pps_receive_data, (void *)sdi)) != SR_OK)
 534                 return ret;
 535         std_session_send_df_header(sdi, LOG_PREFIX);
 536
 537         /* Prime the pipe with the first channel's fetch. */
 538         ch = next_enabled_channel(sdi, NULL);
 539         pch = ch->priv;
 540         if ((ret = select_channel(sdi, ch)) != SR_OK)
 541                 return ret;
 542         if (pch->mq == SR_MQ_VOLTAGE)
 543                 cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
 544         else if (pch->mq == SR_MQ_CURRENT)
 545                 cmd = SCPI_CMD_GET_MEAS_CURRENT;
 546         else if (pch->mq == SR_MQ_POWER)
 547                 cmd = SCPI_CMD_GET_MEAS_POWER;
 548         else
 549                 return SR_ERR;
 550         scpi_cmd(sdi, cmd, pch->hwname);
 551
 552         return SR_OK;
 553 }
 554
 555 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 556 {
 557         struct sr_datafeed_packet packet;
 558         struct sr_scpi_dev_inst *scpi;
 559         float f;
 560
 561         (void)cb_data;
 562
 563         if (sdi->status != SR_ST_ACTIVE)
 564                 return SR_ERR_DEV_CLOSED;
 565
 566         scpi = sdi->conn;
 567
 568         /*
 569          * A requested value is certainly on the way. Retrieve it now,
 570          * to avoid leaving the device in a state where it's not expecting
 571          * commands.
 572          */
 573         sr_scpi_get_float(scpi, NULL, &f);
 574         sr_scpi_source_remove(sdi->session, scpi);
 575
 576         packet.type = SR_DF_END;
 577         sr_session_send(sdi, &packet);
 578
 579         return SR_OK;
 580 }
 581
 582 SR_PRIV struct sr_dev_driver scpi_pps_driver_info = {
 583         .name = "scpi-pps",
 584         .longname = "SCPI PPS",
 585         .api_version = 1,
 586         .init = init,
 587         .cleanup = cleanup,
 588         .scan = scan,
 589         .dev_list = dev_list,
 590         .dev_clear = dev_clear,
 591         .config_get = config_get,
 592         .config_set = config_set,
 593         .config_list = config_list,
 594         .dev_open = dev_open,
 595         .dev_close = dev_close,
 596         .dev_acquisition_start = dev_acquisition_start,
 597         .dev_acquisition_stop = dev_acquisition_stop,
 598         .priv = NULL,
 599 };