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  * Copyright (C) 2017,2019 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
  27 static struct sr_dev_driver scpi_pps_driver_info;
  28 static struct sr_dev_driver hp_ib_pps_driver_info;
  29
  30 static const uint32_t scanopts[] = {
  31         SR_CONF_CONN,
  32         SR_CONF_SERIALCOMM,
  33 };
  34
  35 static const uint32_t drvopts[] = {
  36         SR_CONF_POWER_SUPPLY,
  37 };
  38
  39 static 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
  46 static 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                                         /* Add mqflags from channel_group_spec only to voltage
 156                                          * and current channels
 157                                          */
 158                                         if (pch->mq == SR_MQ_VOLTAGE || pch->mq == SR_MQ_CURRENT)
 159                                                 pch->mqflags = cgs->mqflags;
 160                                         else
 161                                                 pch->mqflags = 0;
 162                                         if (pch->hw_output_idx == j)
 163                                                 cg->channels = g_slist_append(cg->channels, ch);
 164                                 }
 165                         }
 166                 }
 167                 pcg = g_malloc0(sizeof(struct pps_channel_group));
 168                 pcg->features = cgs->features;
 169                 cg->priv = pcg;
 170                 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
 171         }
 172
 173         sr_scpi_hw_info_free(hw_info);
 174         hw_info = NULL;
 175
 176         /* Don't send SCPI_CMD_LOCAL for HP 66xxB devices using SCPI over GPIB */
 177         if (!(devc->device->dialect == SCPI_DIALECT_HP_66XXB &&
 178                         scpi->transport == SCPI_TRANSPORT_LIBGPIB))
 179                 sr_scpi_cmd(sdi, devc->device->commands, 0, NULL, SCPI_CMD_LOCAL);
 180
 181         return sdi;
 182 }
 183
 184 static gchar *hpib_get_revision(struct sr_scpi_dev_inst *scpi)
 185 {
 186         int ret;
 187         gboolean matches;
 188         char *response;
 189         GRegex *version_regex;
 190
 191         ret = sr_scpi_get_string(scpi, "ROM?", &response);
 192         if (ret != SR_OK && !response)
 193                 return NULL;
 194
 195         /* Example version string: "B01 B01" */
 196         version_regex = g_regex_new("[A-Z][0-9]{2} [A-Z][0-9]{2}", 0, 0, NULL);
 197         matches = g_regex_match(version_regex, response, 0, NULL);
 198         g_regex_unref(version_regex);
 199
 200         if (!matches) {
 201                 /* Not a valid version string. Ignore it. */
 202                 g_free(response);
 203                 response = NULL;
 204         } else {
 205                 /* Replace space with dot. */
 206                 response[3] = '.';
 207         }
 208
 209         return response;
 210 }
 211
 212 /*
 213  * This function assumes the response is in the form "HP<model_number>"
 214  *
 215  * HP made many GPIB (then called HP-IB) instruments before the SCPI command
 216  * set was introduced into the standard. We haven't seen any non-HP instruments
 217  * which respond to the "ID?" query, so assume all are HP for now.
 218  */
 219 static int hpib_get_hw_id(struct sr_scpi_dev_inst *scpi,
 220                           struct sr_scpi_hw_info **scpi_response)
 221 {
 222         int ret;
 223         char *response;
 224         struct sr_scpi_hw_info *hw_info;
 225
 226         ret = sr_scpi_get_string(scpi, "ID?", &response);
 227         if ((ret != SR_OK) || !response)
 228                 return SR_ERR;
 229
 230         hw_info = g_malloc0(sizeof(struct sr_scpi_hw_info));
 231
 232         *scpi_response = hw_info;
 233         hw_info->model = response;
 234         hw_info->firmware_version = hpib_get_revision(scpi);
 235         hw_info->manufacturer = g_strdup("HP");
 236
 237         return SR_OK;
 238 }
 239
 240 static struct sr_dev_inst *probe_scpi_pps_device(struct sr_scpi_dev_inst *scpi)
 241 {
 242         return probe_device(scpi, sr_scpi_get_hw_id);
 243 }
 244
 245 static struct sr_dev_inst *probe_hpib_pps_device(struct sr_scpi_dev_inst *scpi)
 246 {
 247         return probe_device(scpi, hpib_get_hw_id);
 248 }
 249
 250 static GSList *scan_scpi_pps(struct sr_dev_driver *di, GSList *options)
 251 {
 252         return sr_scpi_scan(di->context, options, probe_scpi_pps_device);
 253 }
 254
 255 static GSList *scan_hpib_pps(struct sr_dev_driver *di, GSList *options)
 256 {
 257         return sr_scpi_scan(di->context, options, probe_hpib_pps_device);
 258 }
 259
 260 static int dev_open(struct sr_dev_inst *sdi)
 261 {
 262         struct dev_context *devc;
 263         struct sr_scpi_dev_inst *scpi;
 264         GVariant *beeper;
 265
 266         scpi = sdi->conn;
 267         if (sr_scpi_open(scpi) < 0)
 268                 return SR_ERR;
 269
 270         devc = sdi->priv;
 271
 272         /* Don't send SCPI_CMD_REMOTE for HP 66xxB devices using SCPI over GPIB */
 273         if (!(devc->device->dialect == SCPI_DIALECT_HP_66XXB &&
 274                         scpi->transport == SCPI_TRANSPORT_LIBGPIB))
 275                 sr_scpi_cmd(sdi, devc->device->commands, 0, NULL, SCPI_CMD_REMOTE);
 276
 277         devc->beeper_was_set = FALSE;
 278         if (sr_scpi_cmd_resp(sdi, devc->device->commands, 0, NULL,
 279                         &beeper, G_VARIANT_TYPE_BOOLEAN, SCPI_CMD_BEEPER) == SR_OK) {
 280                 if (g_variant_get_boolean(beeper)) {
 281                         devc->beeper_was_set = TRUE;
 282                         sr_scpi_cmd(sdi, devc->device->commands,
 283                                 0, NULL, SCPI_CMD_BEEPER_DISABLE);
 284                 }
 285                 g_variant_unref(beeper);
 286         }
 287
 288         return SR_OK;
 289 }
 290
 291 static int dev_close(struct sr_dev_inst *sdi)
 292 {
 293         struct sr_scpi_dev_inst *scpi;
 294         struct dev_context *devc;
 295
 296         devc = sdi->priv;
 297         scpi = sdi->conn;
 298
 299         if (!scpi)
 300                 return SR_ERR_BUG;
 301
 302         if (devc->beeper_was_set)
 303                 sr_scpi_cmd(sdi, devc->device->commands,
 304                         0, NULL, SCPI_CMD_BEEPER_ENABLE);
 305
 306         /* Don't send SCPI_CMD_LOCAL for HP 66xxB devices using SCPI over GPIB */
 307         if (!(devc->device->dialect == SCPI_DIALECT_HP_66XXB &&
 308                         scpi->transport == SCPI_TRANSPORT_LIBGPIB))
 309                 sr_scpi_cmd(sdi, devc->device->commands, 0, NULL, SCPI_CMD_LOCAL);
 310
 311         return sr_scpi_close(scpi);
 312 }
 313
 314 static void clear_helper(struct dev_context *devc)
 315 {
 316         g_free(devc->channels);
 317         g_free(devc->channel_groups);
 318 }
 319
 320 static int dev_clear(const struct sr_dev_driver *di)
 321 {
 322         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 323 }
 324
 325 static int config_get(uint32_t key, GVariant **data,
 326         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 327 {
 328         struct dev_context *devc;
 329         const GVariantType *gvtype;
 330         unsigned int i;
 331         int channel_group_cmd;
 332         char *channel_group_name;
 333         int cmd, ret;
 334         const char *s;
 335         int reg;
 336
 337         if (!sdi)
 338                 return SR_ERR_ARG;
 339
 340         devc = sdi->priv;
 341
 342         if (cg) {
 343                 /*
 344                  * These options only apply to channel groups with a single
 345                  * channel -- they're per-channel settings for the device.
 346                  */
 347
 348                 /*
 349                  * Config keys are handled below depending on whether a channel
 350                  * group was provided by the frontend. However some of these
 351                  * take a CG on one PPS but not on others. Check the device's
 352                  * profile for that here, and NULL out the channel group as needed.
 353                  */
 354                 for (i = 0; i < devc->device->num_devopts; i++) {
 355                         if (devc->device->devopts[i] == key) {
 356                                 cg = NULL;
 357                                 break;
 358                         }
 359                 }
 360         }
 361
 362         gvtype = NULL;
 363         cmd = -1;
 364         switch (key) {
 365         case SR_CONF_ENABLED:
 366                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 367                 cmd = SCPI_CMD_GET_OUTPUT_ENABLED;
 368                 break;
 369         case SR_CONF_VOLTAGE:
 370                 gvtype = G_VARIANT_TYPE_DOUBLE;
 371                 cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
 372                 break;
 373         case SR_CONF_VOLTAGE_TARGET:
 374                 gvtype = G_VARIANT_TYPE_DOUBLE;
 375                 cmd = SCPI_CMD_GET_VOLTAGE_TARGET;
 376                 break;
 377         case SR_CONF_OUTPUT_FREQUENCY:
 378                 gvtype = G_VARIANT_TYPE_DOUBLE;
 379                 cmd = SCPI_CMD_GET_MEAS_FREQUENCY;
 380                 break;
 381         case SR_CONF_OUTPUT_FREQUENCY_TARGET:
 382                 gvtype = G_VARIANT_TYPE_DOUBLE;
 383                 cmd = SCPI_CMD_GET_FREQUENCY_TARGET;
 384                 break;
 385         case SR_CONF_CURRENT:
 386                 gvtype = G_VARIANT_TYPE_DOUBLE;
 387                 cmd = SCPI_CMD_GET_MEAS_CURRENT;
 388                 break;
 389         case SR_CONF_CURRENT_LIMIT:
 390                 gvtype = G_VARIANT_TYPE_DOUBLE;
 391                 cmd = SCPI_CMD_GET_CURRENT_LIMIT;
 392                 break;
 393         case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
 394                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 395                 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED;
 396                 break;
 397         case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE:
 398                 if (devc->device->dialect == SCPI_DIALECT_HP_66XXB ||
 399                         devc->device->dialect == SCPI_DIALECT_HP_COMP)
 400                         gvtype = G_VARIANT_TYPE_STRING;
 401                 else
 402                         gvtype = G_VARIANT_TYPE_BOOLEAN;
 403                 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE;
 404                 break;
 405         case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
 406                 gvtype = G_VARIANT_TYPE_DOUBLE;
 407                 cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD;
 408                 break;
 409         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 410                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 411                 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED;
 412                 break;
 413         case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE:
 414                 if (devc->device->dialect == SCPI_DIALECT_HP_66XXB ||
 415                         devc->device->dialect == SCPI_DIALECT_HP_COMP)
 416                         gvtype = G_VARIANT_TYPE_STRING;
 417                 else
 418                         gvtype = G_VARIANT_TYPE_BOOLEAN;
 419                 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE;
 420                 break;
 421         case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
 422                 gvtype = G_VARIANT_TYPE_DOUBLE;
 423                 cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD;
 424                 break;
 425         case SR_CONF_OVER_TEMPERATURE_PROTECTION:
 426                 gvtype = G_VARIANT_TYPE_BOOLEAN;
 427                 cmd = SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION;
 428                 break;
 429         case SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE:
 430                 if (devc->device->dialect == SCPI_DIALECT_HP_66XXB ||
 431                         devc->device->dialect == SCPI_DIALECT_HP_COMP)
 432                         gvtype = G_VARIANT_TYPE_STRING;
 433                 else
 434                         gvtype = G_VARIANT_TYPE_BOOLEAN;
 435                 cmd = SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION_ACTIVE;
 436                 break;
 437         case SR_CONF_REGULATION:
 438                 gvtype = G_VARIANT_TYPE_STRING;
 439                 cmd = SCPI_CMD_GET_OUTPUT_REGULATION;
 440                 break;
 441         default:
 442                 return sr_sw_limits_config_get(&devc->limits, key, data);
 443         }
 444         if (!gvtype)
 445                 return SR_ERR_NA;
 446
 447         channel_group_cmd = 0;
 448         channel_group_name = NULL;
 449         if (cg) {
 450                 channel_group_cmd = SCPI_CMD_SELECT_CHANNEL;
 451                 channel_group_name = g_strdup(cg->name);
 452         }
 453
 454         ret = sr_scpi_cmd_resp(sdi, devc->device->commands,
 455                 channel_group_cmd, channel_group_name, data, gvtype, cmd);
 456         g_free(channel_group_name);
 457
 458         /*
 459          * Handle special cases
 460          */
 461
 462         if (cmd == SCPI_CMD_GET_OUTPUT_REGULATION) {
 463                 if (devc->device->dialect == SCPI_DIALECT_PHILIPS) {
 464                         /*
 465                         * The Philips PM2800 series returns VOLT/CURR. We always return
 466                         * a GVariant string in the Rigol notation (CV/CC/UR).
 467                         */
 468                         s = g_variant_get_string(*data, NULL);
 469                         if (!g_strcmp0(s, "VOLT")) {
 470                                 g_variant_unref(*data);
 471                                 *data = g_variant_new_string("CV");
 472                         } else if (!g_strcmp0(s, "CURR")) {
 473                                 g_variant_unref(*data);
 474                                 *data = g_variant_new_string("CC");
 475                         }
 476                 }
 477                 if (devc->device->dialect == SCPI_DIALECT_HP_COMP) {
 478                         /* Evaluate Status Register from a HP 66xx in COMP mode. */
 479                         s = g_variant_get_string(*data, NULL);
 480                         sr_atoi(s, &reg);
 481                         g_variant_unref(*data);
 482                         if (reg & (1 << 0))
 483                                 *data = g_variant_new_string("CV");
 484                         else if (reg & (1 << 1))
 485                                 *data = g_variant_new_string("CC");
 486                         else if (reg & (1 << 2))
 487                                 *data = g_variant_new_string("UR");
 488                         else if (reg & (1 << 9))
 489                                 *data = g_variant_new_string("CC-");
 490                         else
 491                                 *data = g_variant_new_string("");
 492                 }
 493                 if (devc->device->dialect == SCPI_DIALECT_HP_66XXB) {
 494                         /* Evaluate Operational Status Register from a HP 66xxB. */
 495                         s = g_variant_get_string(*data, NULL);
 496                         sr_atoi(s, &reg);
 497                         g_variant_unref(*data);
 498                         if (reg & (1 << 8))
 499                                 *data = g_variant_new_string("CV");
 500                         else if (reg & (1 << 10))
 501                                 *data = g_variant_new_string("CC");
 502                         else if (reg & (1 << 11))
 503                                 *data = g_variant_new_string("CC-");
 504                         else
 505                                 *data = g_variant_new_string("UR");
 506                 }
 507
 508                 s = g_variant_get_string(*data, NULL);
 509                 if (g_strcmp0(s, "CV") && g_strcmp0(s, "CC") && g_strcmp0(s, "CC-") &&
 510                         g_strcmp0(s, "UR") && g_strcmp0(s, "")) {
 511
 512                         sr_err("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
 513                         ret = SR_ERR_DATA;
 514                 }
 515         }
 516
 517         if (cmd == SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE) {
 518                 if (devc->device->dialect == SCPI_DIALECT_HP_COMP) {
 519                         /* Evaluate Status Register from a HP 66xx in COMP mode. */
 520                         s = g_variant_get_string(*data, NULL);
 521                         sr_atoi(s, &reg);
 522                         g_variant_unref(*data);
 523                         *data = g_variant_new_boolean(reg & (1 << 3));
 524                 }
 525                 if (devc->device->dialect == SCPI_DIALECT_HP_66XXB) {
 526                         /* Evaluate Questionable Status Register bit 0 from a HP 66xxB. */
 527                         s = g_variant_get_string(*data, NULL);
 528                         sr_atoi(s, &reg);
 529                         g_variant_unref(*data);
 530                         *data = g_variant_new_boolean(reg & (1 << 0));
 531                 }
 532         }
 533
 534         if (cmd == SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE) {
 535                 if (devc->device->dialect == SCPI_DIALECT_HP_COMP) {
 536                         /* Evaluate Status Register from a HP 66xx in COMP mode. */
 537                         s = g_variant_get_string(*data, NULL);
 538                         sr_atoi(s, &reg);
 539                         g_variant_unref(*data);
 540                         *data = g_variant_new_boolean(reg & (1 << 6));
 541                 }
 542                 if (devc->device->dialect == SCPI_DIALECT_HP_66XXB) {
 543                         /* Evaluate Questionable Status Register bit 1 from a HP 66xxB. */
 544                         s = g_variant_get_string(*data, NULL);
 545                         sr_atoi(s, &reg);
 546                         g_variant_unref(*data);
 547                         *data = g_variant_new_boolean(reg & (1 << 1));
 548                 }
 549         }
 550
 551         if (cmd == SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION_ACTIVE) {
 552                 if (devc->device->dialect == SCPI_DIALECT_HP_COMP) {
 553                         /* Evaluate Status Register from a HP 66xx in COMP mode. */
 554                         s = g_variant_get_string(*data, NULL);
 555                         sr_atoi(s, &reg);
 556                         g_variant_unref(*data);
 557                         *data = g_variant_new_boolean(reg & (1 << 4));
 558                 }
 559                 if (devc->device->dialect == SCPI_DIALECT_HP_66XXB) {
 560                         /* Evaluate Questionable Status Register bit 4 from a HP 66xxB. */
 561                         s = g_variant_get_string(*data, NULL);
 562                         sr_atoi(s, &reg);
 563                         g_variant_unref(*data);
 564                         *data = g_variant_new_boolean(reg & (1 << 4));
 565                 }
 566         }
 567
 568         return ret;
 569 }
 570
 571 static int config_set(uint32_t key, GVariant *data,
 572         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 573 {
 574         struct dev_context *devc;
 575         double d;
 576         int channel_group_cmd;
 577         char *channel_group_name;
 578         int ret;
 579
 580         if (!sdi)
 581                 return SR_ERR_ARG;
 582
 583         channel_group_cmd = 0;
 584         channel_group_name = NULL;
 585         if (cg) {
 586                 channel_group_cmd = SCPI_CMD_SELECT_CHANNEL;
 587                 channel_group_name = g_strdup(cg->name);
 588         }
 589
 590         devc = sdi->priv;
 591
 592         switch (key) {
 593         case SR_CONF_ENABLED:
 594                 if (g_variant_get_boolean(data))
 595                         ret = sr_scpi_cmd(sdi, devc->device->commands,
 596                                         channel_group_cmd, channel_group_name,
 597                                         SCPI_CMD_SET_OUTPUT_ENABLE);
 598                 else
 599                         ret = sr_scpi_cmd(sdi, devc->device->commands,
 600                                         channel_group_cmd, channel_group_name,
 601                                         SCPI_CMD_SET_OUTPUT_DISABLE);
 602                 break;
 603         case SR_CONF_VOLTAGE_TARGET:
 604                 d = g_variant_get_double(data);
 605                 ret = sr_scpi_cmd(sdi, devc->device->commands,
 606                                 channel_group_cmd, channel_group_name,
 607                                 SCPI_CMD_SET_VOLTAGE_TARGET, d);
 608                 break;
 609         case SR_CONF_OUTPUT_FREQUENCY_TARGET:
 610                 d = g_variant_get_double(data);
 611                 ret = sr_scpi_cmd(sdi, devc->device->commands,
 612                                 channel_group_cmd, channel_group_name,
 613                                 SCPI_CMD_SET_FREQUENCY_TARGET, d);
 614                 break;
 615         case SR_CONF_CURRENT_LIMIT:
 616                 d = g_variant_get_double(data);
 617                 ret = sr_scpi_cmd(sdi, devc->device->commands,
 618                                 channel_group_cmd, channel_group_name,
 619                                 SCPI_CMD_SET_CURRENT_LIMIT, d);
 620                 break;
 621         case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
 622                 if (g_variant_get_boolean(data))
 623                         ret = sr_scpi_cmd(sdi, devc->device->commands,
 624                                         channel_group_cmd, channel_group_name,
 625                                         SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLE);
 626                 else
 627                         ret = sr_scpi_cmd(sdi, devc->device->commands,
 628                                         channel_group_cmd, channel_group_name,
 629                                         SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_DISABLE);
 630                 break;
 631         case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
 632                 d = g_variant_get_double(data);
 633                 ret = sr_scpi_cmd(sdi, devc->device->commands,
 634                                 channel_group_cmd, channel_group_name,
 635                                 SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD, d);
 636                 break;
 637         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 638                 if (g_variant_get_boolean(data))
 639                         ret = sr_scpi_cmd(sdi, devc->device->commands,
 640                                         channel_group_cmd, channel_group_name,
 641                                         SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLE);
 642                 else
 643                         ret = sr_scpi_cmd(sdi, devc->device->commands,
 644                                         channel_group_cmd, channel_group_name,
 645                                         SCPI_CMD_SET_OVER_CURRENT_PROTECTION_DISABLE);
 646                 break;
 647         case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
 648                 d = g_variant_get_double(data);
 649                 ret = sr_scpi_cmd(sdi, devc->device->commands,
 650                                 channel_group_cmd, channel_group_name,
 651                                 SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD, d);
 652                 break;
 653         case SR_CONF_OVER_TEMPERATURE_PROTECTION:
 654                 if (g_variant_get_boolean(data))
 655                         ret = sr_scpi_cmd(sdi, devc->device->commands,
 656                                         channel_group_cmd, channel_group_name,
 657                                         SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_ENABLE);
 658                 else
 659                         ret = sr_scpi_cmd(sdi, devc->device->commands,
 660                                         channel_group_cmd, channel_group_name,
 661                                         SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_DISABLE);
 662                 break;
 663         default:
 664                 ret = sr_sw_limits_config_set(&devc->limits, key, data);
 665         }
 666
 667         g_free(channel_group_name);
 668
 669         return ret;
 670 }
 671
 672 static int config_list(uint32_t key, GVariant **data,
 673         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 674 {
 675         struct dev_context *devc;
 676         struct sr_channel *ch;
 677         const struct channel_spec *ch_spec;
 678         int i;
 679         const char *s[16];
 680
 681         devc = (sdi) ? sdi->priv : NULL;
 682
 683         if (!cg) {
 684                 switch (key) {
 685                 case SR_CONF_SCAN_OPTIONS:
 686                 case SR_CONF_DEVICE_OPTIONS:
 687                         return std_opts_config_list(key, data, sdi, cg,
 688                                 ARRAY_AND_SIZE(scanopts),
 689                                 ARRAY_AND_SIZE(drvopts),
 690                                 (devc && devc->device) ? devc->device->devopts : NULL,
 691                                 (devc && devc->device) ? devc->device->num_devopts : 0);
 692                         break;
 693                 case SR_CONF_CHANNEL_CONFIG:
 694                         if (!devc || !devc->device)
 695                                 return SR_ERR_ARG;
 696                         /* Not used. */
 697                         i = 0;
 698                         if (devc->device->features & PPS_INDEPENDENT)
 699                                 s[i++] = "Independent";
 700                         if (devc->device->features & PPS_SERIES)
 701                                 s[i++] = "Series";
 702                         if (devc->device->features & PPS_PARALLEL)
 703                                 s[i++] = "Parallel";
 704                         if (i == 0) {
 705                                 /*
 706                                  * Shouldn't happen: independent-only devices
 707                                  * shouldn't advertise this option at all.
 708                                  */
 709                                 return SR_ERR_NA;
 710                         }
 711                         *data = g_variant_new_strv(s, i);
 712                         break;
 713                 default:
 714                         return SR_ERR_NA;
 715                 }
 716         } else {
 717                 /*
 718                  * Per-channel-group options depending on a channel are actually
 719                  * done with the first channel. Channel groups in PPS can have
 720                  * more than one channel, but they will typically be of equal
 721                  * specification for use in series or parallel mode.
 722                  */
 723                 ch = cg->channels->data;
 724                 if (!devc || !devc->device)
 725                         return SR_ERR_ARG;
 726                 ch_spec = &(devc->device->channels[ch->index]);
 727
 728                 switch (key) {
 729                 case SR_CONF_DEVICE_OPTIONS:
 730                         *data = std_gvar_array_u32(devc->device->devopts_cg, devc->device->num_devopts_cg);
 731                         break;
 732                 case SR_CONF_VOLTAGE_TARGET:
 733                         *data = std_gvar_min_max_step_array(ch_spec->voltage);
 734                         break;
 735                 case SR_CONF_OUTPUT_FREQUENCY_TARGET:
 736                         *data = std_gvar_min_max_step_array(ch_spec->frequency);
 737                         break;
 738                 case SR_CONF_CURRENT_LIMIT:
 739                         *data = std_gvar_min_max_step_array(ch_spec->current);
 740                         break;
 741                 case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
 742                         *data = std_gvar_min_max_step_array(ch_spec->ovp);
 743                         break;
 744                 case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
 745                         *data = std_gvar_min_max_step_array(ch_spec->ocp);
 746                         break;
 747                 default:
 748                         return SR_ERR_NA;
 749                 }
 750         }
 751
 752         return SR_OK;
 753 }
 754
 755 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 756 {
 757         struct dev_context *devc;
 758         struct sr_scpi_dev_inst *scpi;
 759         int ret;
 760
 761         devc = sdi->priv;
 762         scpi = sdi->conn;
 763
 764         /* Prime the pipe with the first channel. */
 765         devc->cur_acquisition_channel = sr_next_enabled_channel(sdi, NULL);
 766
 767         /* Device specific initialization before acquisition starts. */
 768         if (devc->device->init_acquisition)
 769                 devc->device->init_acquisition(sdi);
 770
 771         if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10,
 772                         scpi_pps_receive_data, (void *)sdi)) != SR_OK)
 773                 return ret;
 774         std_session_send_df_header(sdi);
 775         sr_sw_limits_acquisition_start(&devc->limits);
 776
 777         return SR_OK;
 778 }
 779
 780 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 781 {
 782         struct sr_scpi_dev_inst *scpi;
 783
 784         scpi = sdi->conn;
 785
 786         sr_scpi_source_remove(sdi->session, scpi);
 787
 788         std_session_send_df_end(sdi);
 789
 790         return SR_OK;
 791 }
 792
 793 static struct sr_dev_driver scpi_pps_driver_info = {
 794         .name = "scpi-pps",
 795         .longname = "SCPI PPS",
 796         .api_version = 1,
 797         .init = std_init,
 798         .cleanup = std_cleanup,
 799         .scan = scan_scpi_pps,
 800         .dev_list = std_dev_list,
 801         .dev_clear = dev_clear,
 802         .config_get = config_get,
 803         .config_set = config_set,
 804         .config_list = config_list,
 805         .dev_open = dev_open,
 806         .dev_close = dev_close,
 807         .dev_acquisition_start = dev_acquisition_start,
 808         .dev_acquisition_stop = dev_acquisition_stop,
 809         .context = NULL,
 810 };
 811
 812 static struct sr_dev_driver hp_ib_pps_driver_info = {
 813         .name = "hpib-pps",
 814         .longname = "HP-IB PPS",
 815         .api_version = 1,
 816         .init = std_init,
 817         .cleanup = std_cleanup,
 818         .scan = scan_hpib_pps,
 819         .dev_list = std_dev_list,
 820         .dev_clear = dev_clear,
 821         .config_get = config_get,
 822         .config_set = config_set,
 823         .config_list = config_list,
 824         .dev_open = dev_open,
 825         .dev_close = dev_close,
 826         .dev_acquisition_start = dev_acquisition_start,
 827         .dev_acquisition_stop = dev_acquisition_stop,
 828         .context = NULL,
 829 };
 830 SR_REGISTER_DEV_DRIVER(scpi_pps_driver_info);
 831 SR_REGISTER_DEV_DRIVER(hp_ib_pps_driver_info);