src/hardware/lecroy-xstream/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2017 Sven Schnelle <svens@stackframe.org>
   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 <config.h>
  21 #include <stdlib.h>
  22 #include "scpi.h"
  23 #include "protocol.h"
  24
  25 static struct sr_dev_driver lecroy_xstream_driver_info;
  26
  27 static const char *manufacturers[] = {
  28         "LECROY",
  29 };
  30
  31 static const uint32_t scanopts[] = {
  32         SR_CONF_CONN,
  33 };
  34
  35 static const uint32_t drvopts[] = {
  36         SR_CONF_OSCILLOSCOPE,
  37 };
  38
  39 static const uint32_t devopts[] = {
  40         SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
  41         SR_CONF_SAMPLERATE | SR_CONF_GET,
  42         SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  43         SR_CONF_NUM_HDIV | SR_CONF_GET,
  44         SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
  45         SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  46         SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  47 };
  48
  49 static const uint32_t devopts_cg_analog[] = {
  50         SR_CONF_NUM_VDIV | SR_CONF_GET,
  51         SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  52         SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  53 };
  54
  55 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
  56 {
  57         struct sr_dev_inst *sdi;
  58         struct dev_context *devc;
  59         struct sr_scpi_hw_info *hw_info;
  60
  61         sdi = NULL;
  62         devc = NULL;
  63         hw_info = NULL;
  64
  65         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
  66                 sr_info("Couldn't get IDN response.");
  67                 goto fail;
  68         }
  69
  70         if (std_str_idx_s(hw_info->manufacturer, ARRAY_AND_SIZE(manufacturers)) < 0)
  71                 goto fail;
  72
  73         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  74         sdi->vendor = g_strdup(hw_info->manufacturer);
  75         sdi->model = g_strdup(hw_info->model);
  76         sdi->version = g_strdup(hw_info->firmware_version);
  77         sdi->serial_num = g_strdup(hw_info->serial_number);
  78         sdi->driver = &lecroy_xstream_driver_info;
  79         sdi->inst_type = SR_INST_SCPI;
  80         sdi->conn = scpi;
  81
  82         sr_scpi_hw_info_free(hw_info);
  83         hw_info = NULL;
  84
  85         devc = g_malloc0(sizeof(struct dev_context));
  86
  87         sdi->priv = devc;
  88
  89         if (lecroy_xstream_init_device(sdi) != SR_OK)
  90                 goto fail;
  91
  92         return sdi;
  93
  94 fail:
  95         sr_scpi_hw_info_free(hw_info);
  96         sr_dev_inst_free(sdi);
  97         g_free(devc);
  98
  99         return NULL;
 100 }
 101
 102 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 103 {
 104         return sr_scpi_scan(di->context, options, probe_device);
 105 }
 106
 107 static void clear_helper(struct dev_context *devc)
 108 {
 109         lecroy_xstream_state_free(devc->model_state);
 110         g_free(devc->analog_groups);
 111 }
 112
 113 static int dev_clear(const struct sr_dev_driver *di)
 114 {
 115         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 116 }
 117
 118 static int dev_open(struct sr_dev_inst *sdi)
 119 {
 120         if (sr_scpi_open(sdi->conn) != SR_OK)
 121                 return SR_ERR;
 122
 123         if (lecroy_xstream_state_get(sdi) != SR_OK)
 124                 return SR_ERR;
 125
 126         return SR_OK;
 127 }
 128
 129 static int dev_close(struct sr_dev_inst *sdi)
 130 {
 131         return sr_scpi_close(sdi->conn);
 132 }
 133
 134 static int config_get(uint32_t key, GVariant **data,
 135         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 136 {
 137         unsigned int i;
 138         struct dev_context *devc;
 139         const struct scope_config *model;
 140         struct scope_state *state;
 141
 142         if (!sdi)
 143                 return SR_ERR_ARG;
 144
 145         devc = sdi->priv;
 146
 147         model = devc->model_config;
 148         state = devc->model_state;
 149         *data = NULL;
 150
 151         switch (key) {
 152         case SR_CONF_NUM_HDIV:
 153                 *data = g_variant_new_int32(model->num_xdivs);
 154                 break;
 155         case SR_CONF_TIMEBASE:
 156                 *data = g_variant_new("(tt)",
 157                                 model->timebases[state->timebase].p,
 158                                 model->timebases[state->timebase].q);
 159                 break;
 160         case SR_CONF_NUM_VDIV:
 161                 for (i = 0; i < model->analog_channels; i++) {
 162                         if (cg != devc->analog_groups[i])
 163                                 continue;
 164                         *data = g_variant_new_int32(model->num_ydivs);
 165                 }
 166                 break;
 167         case SR_CONF_VDIV:
 168                 for (i = 0; i < model->analog_channels; i++) {
 169                         if (cg != devc->analog_groups[i])
 170                                 continue;
 171                         *data = g_variant_new("(tt)",
 172                                 model->vdivs[state->analog_channels[i].vdiv].p,
 173                                 model->vdivs[state->analog_channels[i].vdiv].q);
 174                 }
 175                 break;
 176         case SR_CONF_TRIGGER_SOURCE:
 177                 *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
 178                 break;
 179         case SR_CONF_TRIGGER_SLOPE:
 180                 *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]);
 181                 break;
 182         case SR_CONF_HORIZ_TRIGGERPOS:
 183                 *data = g_variant_new_double(state->horiz_triggerpos);
 184                 break;
 185         case SR_CONF_COUPLING:
 186                 for (i = 0; i < model->analog_channels; i++) {
 187                         if (cg != devc->analog_groups[i])
 188                                 continue;
 189                         *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[i].coupling]);
 190                 }
 191                 break;
 192         case SR_CONF_SAMPLERATE:
 193                 *data = g_variant_new_uint64(state->sample_rate);
 194                 break;
 195         case SR_CONF_ENABLED:
 196                 *data = g_variant_new_boolean(FALSE);
 197                 break;
 198         default:
 199                 return SR_ERR_NA;
 200         }
 201
 202         return SR_OK;
 203 }
 204
 205 static int config_set(uint32_t key, GVariant *data,
 206         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 207 {
 208         int ret;
 209         unsigned int i, j;
 210         char command[MAX_COMMAND_SIZE];
 211         struct dev_context *devc;
 212         const struct scope_config *model;
 213         struct scope_state *state;
 214         const char *tmp;
 215         int64_t p;
 216         uint64_t q;
 217         double tmp_d;
 218         gboolean update_sample_rate;
 219
 220         if (!sdi)
 221                 return SR_ERR_ARG;
 222
 223         devc = sdi->priv;
 224
 225         model = devc->model_config;
 226         state = devc->model_state;
 227         update_sample_rate = FALSE;
 228
 229         ret = SR_ERR_NA;
 230
 231         switch (key) {
 232         case SR_CONF_LIMIT_FRAMES:
 233                 devc->frame_limit = g_variant_get_uint64(data);
 234                 ret = SR_OK;
 235                 break;
 236         case SR_CONF_TRIGGER_SOURCE:
 237                 tmp = g_variant_get_string(data, NULL);
 238                 for (i = 0; i < model->num_trigger_sources; i++) {
 239                         if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
 240                                 continue;
 241                         state->trigger_source = i;
 242                         g_snprintf(command, sizeof(command),
 243                                         "SET TRIGGER SOURCE %s",
 244                                         (*model->trigger_sources)[i]);
 245
 246                         ret = sr_scpi_send(sdi->conn, command);
 247                         break;
 248                 }
 249                 break;
 250         case SR_CONF_VDIV:
 251                 g_variant_get(data, "(tt)", &p, &q);
 252
 253                 for (i = 0; i < model->num_vdivs; i++) {
 254                         if (p != model->vdivs[i].p || q != model->vdivs[i].q)
 255                                 continue;
 256                         for (j = 1; j <= model->analog_channels; j++) {
 257                                 if (cg != devc->analog_groups[j - 1])
 258                                         continue;
 259                                 state->analog_channels[j - 1].vdiv = i;
 260                                 g_snprintf(command, sizeof(command),
 261                                                 "C%d:VDIV %E", j, (float)p/q);
 262
 263                                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 264                                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 265                                         return SR_ERR;
 266
 267                                 break;
 268                         }
 269
 270                         ret = SR_OK;
 271                         break;
 272                 }
 273                 break;
 274         case SR_CONF_TIMEBASE:
 275                 g_variant_get(data, "(tt)", &p, &q);
 276
 277                 for (i = 0; i < model->num_timebases; i++) {
 278                         if (p != model->timebases[i].p ||
 279                             q != model->timebases[i].q)
 280                                 continue;
 281                         state->timebase = i;
 282                         g_snprintf(command, sizeof(command),
 283                                         "TIME_DIV %E", (float)p/q);
 284
 285                         ret = sr_scpi_send(sdi->conn, command);
 286                         update_sample_rate = TRUE;
 287                         break;
 288                 }
 289                 break;
 290         case SR_CONF_HORIZ_TRIGGERPOS:
 291                 tmp_d = g_variant_get_double(data);
 292
 293                 if (tmp_d < 0.0 || tmp_d > 1.0)
 294                         return SR_ERR;
 295
 296                 state->horiz_triggerpos = tmp_d;
 297                 tmp_d = -(tmp_d - 0.5) *
 298                         ((double)model->timebases[state->timebase].p /
 299                          model->timebases[state->timebase].q)
 300                          * model->num_xdivs;
 301
 302                 g_snprintf(command, sizeof(command), "TRIG POS %e S", tmp_d);
 303
 304                 ret = sr_scpi_send(sdi->conn, command);
 305                 break;
 306         case SR_CONF_TRIGGER_SLOPE:
 307                 tmp = g_variant_get_string(data, NULL);
 308                 for (i = 0; i < model->num_trigger_slopes; i++) {
 309                         if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0)
 310                                 continue;
 311                         state->trigger_slope = i;
 312                         g_snprintf(command, sizeof(command),
 313                                         "SET TRIGGER SLOPE %s",
 314                                         (*model->trigger_slopes)[i]);
 315
 316                         ret = sr_scpi_send(sdi->conn, command);
 317                         break;
 318                 }
 319                 break;
 320         case SR_CONF_COUPLING:
 321                 tmp = g_variant_get_string(data, NULL);
 322
 323                 for (i = 0; i < model->num_coupling_options; i++) {
 324                         if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
 325                                 continue;
 326                         for (j = 1; j <= model->analog_channels; j++) {
 327                                 if (cg != devc->analog_groups[j - 1])
 328                                         continue;
 329                                 state->analog_channels[j - 1].coupling = i;
 330
 331                                 g_snprintf(command, sizeof(command),
 332                                                 "C%d:COUPLING %s", j, tmp);
 333
 334                                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 335                                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 336                                         return SR_ERR;
 337                                 break;
 338                         }
 339
 340                         ret = SR_OK;
 341                         break;
 342                 }
 343                 break;
 344         default:
 345                 ret = SR_ERR_NA;
 346                 break;
 347         }
 348
 349         if (ret == SR_OK)
 350                 ret = sr_scpi_get_opc(sdi->conn);
 351
 352         if (ret == SR_OK && update_sample_rate)
 353                 ret = lecroy_xstream_update_sample_rate(sdi);
 354
 355         return ret;
 356 }
 357
 358 static int config_list(uint32_t key, GVariant **data,
 359         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 360 {
 361         struct dev_context *devc;
 362         const struct scope_config *model;
 363
 364         devc = (sdi) ? sdi->priv : NULL;
 365         model = (devc) ? devc->model_config : NULL;
 366
 367         switch (key) {
 368         case SR_CONF_SCAN_OPTIONS:
 369                 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, NULL, NULL);
 370         case SR_CONF_DEVICE_OPTIONS:
 371                 if (!cg)
 372                         return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
 373                 *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog));
 374                 break;
 375         case SR_CONF_COUPLING:
 376                 *data = g_variant_new_strv(*model->coupling_options, model->num_coupling_options);
 377                 break;
 378         case SR_CONF_TRIGGER_SOURCE:
 379                 if (!model)
 380                         return SR_ERR_ARG;
 381                 *data = g_variant_new_strv(*model->trigger_sources, model->num_trigger_sources);
 382                 break;
 383         case SR_CONF_TRIGGER_SLOPE:
 384                 if (!model)
 385                         return SR_ERR_ARG;
 386                 *data = g_variant_new_strv(*model->trigger_slopes, model->num_trigger_slopes);
 387                 break;
 388         case SR_CONF_TIMEBASE:
 389                 if (!model)
 390                         return SR_ERR_ARG;
 391                 *data = std_gvar_tuple_rational(model->timebases, model->num_timebases);
 392                 break;
 393         case SR_CONF_VDIV:
 394                 if (!model)
 395                         return SR_ERR_ARG;
 396                 *data = std_gvar_tuple_rational(model->vdivs, model->num_vdivs);
 397                 break;
 398         default:
 399                 return SR_ERR_NA;
 400         }
 401
 402         return SR_OK;
 403 }
 404
 405 SR_PRIV int lecroy_xstream_request_data(const struct sr_dev_inst *sdi)
 406 {
 407         char command[MAX_COMMAND_SIZE];
 408         struct sr_channel *ch;
 409         struct dev_context *devc;
 410
 411         devc = sdi->priv;
 412
 413         ch = devc->current_channel->data;
 414
 415         if (ch->type != SR_CHANNEL_ANALOG)
 416                 return SR_ERR;
 417
 418         g_snprintf(command, sizeof(command),
 419                 "COMM_FORMAT DEF9,WORD,BIN;C%d:WAVEFORM?", ch->index + 1);
 420         return sr_scpi_send(sdi->conn, command);
 421 }
 422
 423 static int setup_channels(const struct sr_dev_inst *sdi)
 424 {
 425         GSList *l;
 426         gboolean setup_changed;
 427         char command[MAX_COMMAND_SIZE];
 428         struct scope_state *state;
 429         struct sr_channel *ch;
 430         struct dev_context *devc;
 431         struct sr_scpi_dev_inst *scpi;
 432
 433         devc = sdi->priv;
 434         scpi = sdi->conn;
 435         state = devc->model_state;
 436         setup_changed = FALSE;
 437
 438         for (l = sdi->channels; l; l = l->next) {
 439                 ch = l->data;
 440                 switch (ch->type) {
 441                 case SR_CHANNEL_ANALOG:
 442                         if (ch->enabled == state->analog_channels[ch->index].state)
 443                                 break;
 444                         g_snprintf(command, sizeof(command), "C%d:TRACE %s",
 445                                    ch->index + 1, ch->enabled ? "ON" : "OFF");
 446
 447                         if (sr_scpi_send(scpi, command) != SR_OK)
 448                                 return SR_ERR;
 449                         state->analog_channels[ch->index].state = ch->enabled;
 450                         setup_changed = TRUE;
 451                         break;
 452                 default:
 453                         return SR_ERR;
 454                 }
 455         }
 456
 457         if (setup_changed && lecroy_xstream_update_sample_rate(sdi) != SR_OK)
 458                 return SR_ERR;
 459
 460         return SR_OK;
 461 }
 462
 463 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 464 {
 465         GSList *l;
 466         struct sr_channel *ch;
 467         struct dev_context *devc;
 468         int ret;
 469         struct sr_scpi_dev_inst *scpi;
 470
 471         devc = sdi->priv;
 472         scpi = sdi->conn;
 473
 474         /* Preset empty results. */
 475         g_slist_free(devc->enabled_channels);
 476         devc->enabled_channels = NULL;
 477
 478         /*
 479          * Contruct the list of enabled channels. Determine the highest
 480          * number of digital pods involved in the acquisition.
 481          */
 482
 483         for (l = sdi->channels; l; l = l->next) {
 484                 ch = l->data;
 485                 if (!ch->enabled)
 486                         continue;
 487                 /* Only add a single digital channel per group (pod). */
 488                 devc->enabled_channels = g_slist_append(
 489                         devc->enabled_channels, ch);
 490         }
 491
 492         if (!devc->enabled_channels)
 493                 return SR_ERR;
 494
 495         /*
 496          * Configure the analog channels and the
 497          * corresponding digital pods.
 498          */
 499         if (setup_channels(sdi) != SR_OK) {
 500                 sr_err("Failed to setup channel configuration!");
 501                 ret = SR_ERR;
 502                 goto free_enabled;
 503         }
 504
 505         /*
 506          * Start acquisition on the first enabled channel. The
 507          * receive routine will continue driving the acquisition.
 508          */
 509         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
 510                         lecroy_xstream_receive_data, (void *)sdi);
 511
 512         std_session_send_df_header(sdi);
 513
 514         devc->current_channel = devc->enabled_channels;
 515
 516         return lecroy_xstream_request_data(sdi);
 517
 518 free_enabled:
 519         g_slist_free(devc->enabled_channels);
 520         devc->enabled_channels = NULL;
 521
 522         return ret;
 523 }
 524
 525 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 526 {
 527         struct dev_context *devc;
 528         struct sr_scpi_dev_inst *scpi;
 529
 530         std_session_send_df_end(sdi);
 531
 532         devc = sdi->priv;
 533
 534         devc->num_frames = 0;
 535         g_slist_free(devc->enabled_channels);
 536         devc->enabled_channels = NULL;
 537         scpi = sdi->conn;
 538         sr_scpi_source_remove(sdi->session, scpi);
 539
 540         return SR_OK;
 541 }
 542
 543 static struct sr_dev_driver lecroy_xstream_driver_info = {
 544         .name = "lecroy-xstream",
 545         .longname = "LeCroy X-Stream",
 546         .api_version = 1,
 547         .init = std_init,
 548         .cleanup = std_cleanup,
 549         .scan = scan,
 550         .dev_list = std_dev_list,
 551         .dev_clear = dev_clear,
 552         .config_get = config_get,
 553         .config_set = config_set,
 554         .config_list = config_list,
 555         .dev_open = dev_open,
 556         .dev_close = dev_close,
 557         .dev_acquisition_start = dev_acquisition_start,
 558         .dev_acquisition_stop = dev_acquisition_stop,
 559         .context = NULL,
 560 };
 561 SR_REGISTER_DEV_DRIVER(lecroy_xstream_driver_info);