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