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         sdi->priv = devc;
  87
  88         if (lecroy_xstream_init_device(sdi) != SR_OK)
  89                 goto fail;
  90
  91         return sdi;
  92
  93 fail:
  94         sr_scpi_hw_info_free(hw_info);
  95         sr_dev_inst_free(sdi);
  96         g_free(devc);
  97
  98         return NULL;
  99 }
 100
 101 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 102 {
 103         return sr_scpi_scan(di->context, options, probe_device);
 104 }
 105
 106 static void clear_helper(struct dev_context *devc)
 107 {
 108         lecroy_xstream_state_free(devc->model_state);
 109         g_free(devc->analog_groups);
 110 }
 111
 112 static int dev_clear(const struct sr_dev_driver *di)
 113 {
 114         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 115 }
 116
 117 static int dev_open(struct sr_dev_inst *sdi)
 118 {
 119         if (sr_scpi_open(sdi->conn) != SR_OK)
 120                 return SR_ERR;
 121
 122         if (lecroy_xstream_state_get(sdi) != SR_OK)
 123                 return SR_ERR;
 124
 125         return SR_OK;
 126 }
 127
 128 static int dev_close(struct sr_dev_inst *sdi)
 129 {
 130         return sr_scpi_close(sdi->conn);
 131 }
 132
 133 static int config_get(uint32_t key, GVariant **data,
 134                 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 135 {
 136         int idx;
 137         struct dev_context *devc;
 138         const struct scope_config *model;
 139         struct scope_state *state;
 140
 141         if (!sdi)
 142                 return SR_ERR_ARG;
 143
 144         devc = sdi->priv;
 145
 146         model = devc->model_config;
 147         state = devc->model_state;
 148         *data = NULL;
 149
 150         switch (key) {
 151         case SR_CONF_NUM_HDIV:
 152                 *data = g_variant_new_int32(model->num_xdivs);
 153                 break;
 154         case SR_CONF_TIMEBASE:
 155                 *data = g_variant_new("(tt)",
 156                                 (*model->timebases)[state->timebase][0],
 157                                 (*model->timebases)[state->timebase][1]);
 158                 break;
 159         case SR_CONF_NUM_VDIV:
 160                 if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) < 0)
 161                         return SR_ERR_ARG;
 162                 *data = g_variant_new_int32(model->num_ydivs);
 163                 break;
 164         case SR_CONF_VDIV:
 165                 if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
 166                         return SR_ERR_ARG;
 167                 *data = g_variant_new("(tt)",
 168                                 (*model->vdivs)[state->analog_channels[idx].vdiv][0],
 169                                 (*model->vdivs)[state->analog_channels[idx].vdiv][1]);
 170                 break;
 171         case SR_CONF_TRIGGER_SOURCE:
 172                 *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
 173                 break;
 174         case SR_CONF_TRIGGER_SLOPE:
 175                 *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]);
 176                 break;
 177         case SR_CONF_HORIZ_TRIGGERPOS:
 178                 *data = g_variant_new_double(state->horiz_triggerpos);
 179                 break;
 180         case SR_CONF_COUPLING:
 181                 if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
 182                         return SR_ERR_ARG;
 183                 *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[idx].coupling]);
 184                 break;
 185         case SR_CONF_SAMPLERATE:
 186                 *data = g_variant_new_uint64(state->sample_rate);
 187                 break;
 188         case SR_CONF_ENABLED:
 189                 *data = g_variant_new_boolean(FALSE);
 190                 break;
 191         default:
 192                 return SR_ERR_NA;
 193         }
 194
 195         return SR_OK;
 196 }
 197
 198 static int config_set(uint32_t key, GVariant *data,
 199                 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 200 {
 201         int ret, idx, j;
 202         char command[MAX_COMMAND_SIZE];
 203         struct dev_context *devc;
 204         const struct scope_config *model;
 205         struct scope_state *state;
 206         double tmp_d;
 207         gboolean update_sample_rate;
 208
 209         if (!sdi)
 210                 return SR_ERR_ARG;
 211
 212         devc = sdi->priv;
 213
 214         model = devc->model_config;
 215         state = devc->model_state;
 216         update_sample_rate = FALSE;
 217
 218         ret = SR_ERR_NA;
 219
 220         switch (key) {
 221         case SR_CONF_LIMIT_FRAMES:
 222                 devc->frame_limit = g_variant_get_uint64(data);
 223                 ret = SR_OK;
 224                 break;
 225         case SR_CONF_TRIGGER_SOURCE:
 226                 if ((idx = std_str_idx(data, *model->trigger_sources, model->num_trigger_sources)) < 0)
 227                         return SR_ERR_ARG;
 228                 state->trigger_source = idx;
 229                 g_snprintf(command, sizeof(command),
 230                                 "SET TRIGGER SOURCE %s", (*model->trigger_sources)[idx]);
 231                 ret = sr_scpi_send(sdi->conn, command);
 232                 break;
 233         case SR_CONF_VDIV:
 234                 if ((idx = std_u64_tuple_idx(data, *model->vdivs, model->num_vdivs)) < 0)
 235                         return SR_ERR_ARG;
 236                 if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
 237                         return SR_ERR_ARG;
 238                 state->analog_channels[j].vdiv = idx;
 239                 g_snprintf(command, sizeof(command),
 240                                 "C%d:VDIV %E", j + 1, (float) (*model->vdivs)[idx][0] / (*model->vdivs)[idx][1]);
 241                 if (sr_scpi_send(sdi->conn, command) != SR_OK || sr_scpi_get_opc(sdi->conn) != SR_OK)
 242                         return SR_ERR;
 243                 ret = SR_OK;
 244                 break;
 245         case SR_CONF_TIMEBASE:
 246                 if ((idx = std_u64_tuple_idx(data, *model->timebases, model->num_timebases)) < 0)
 247                         return SR_ERR_ARG;
 248                 state->timebase = idx;
 249                 g_snprintf(command, sizeof(command),
 250                                 "TIME_DIV %E", (float) (*model->timebases)[idx][0] / (*model->timebases)[idx][1]);
 251                 ret = sr_scpi_send(sdi->conn, command);
 252                 update_sample_rate = TRUE;
 253                 break;
 254         case SR_CONF_HORIZ_TRIGGERPOS:
 255                 tmp_d = g_variant_get_double(data);
 256
 257                 if (tmp_d < 0.0 || tmp_d > 1.0)
 258                         return SR_ERR;
 259
 260                 state->horiz_triggerpos = tmp_d;
 261                 tmp_d = -(tmp_d - 0.5) *
 262                                 ((double)(*model->timebases)[state->timebase][0] /
 263                                 (*model->timebases)[state->timebase][1])
 264                                 * model->num_xdivs;
 265
 266                 g_snprintf(command, sizeof(command), "TRIG POS %e S", tmp_d);
 267
 268                 ret = sr_scpi_send(sdi->conn, command);
 269                 break;
 270         case SR_CONF_TRIGGER_SLOPE:
 271                 if ((idx = std_str_idx(data, *model->trigger_slopes, model->num_trigger_slopes)) < 0)
 272                         return SR_ERR_ARG;
 273                 state->trigger_slope = idx;
 274                 g_snprintf(command, sizeof(command),
 275                                 "SET TRIGGER SLOPE %s", (*model->trigger_slopes)[idx]);
 276                 ret = sr_scpi_send(sdi->conn, command);
 277                 break;
 278         case SR_CONF_COUPLING:
 279                 if ((idx = std_str_idx(data, *model->coupling_options, model->num_coupling_options)) < 0)
 280                         return SR_ERR_ARG;
 281                 if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
 282                         return SR_ERR_ARG;
 283                 state->analog_channels[j].coupling = idx;
 284                 g_snprintf(command, sizeof(command), "C%d:COUPLING %s",
 285                                 j + 1, (*model->coupling_options)[idx]);
 286                 if (sr_scpi_send(sdi->conn, command) != SR_OK || sr_scpi_get_opc(sdi->conn) != SR_OK)
 287                         return SR_ERR;
 288                 ret = SR_OK;
 289                 break;
 290         default:
 291                 ret = SR_ERR_NA;
 292                 break;
 293         }
 294
 295         if (ret == SR_OK)
 296                 ret = sr_scpi_get_opc(sdi->conn);
 297
 298         if (ret == SR_OK && update_sample_rate)
 299                 ret = lecroy_xstream_update_sample_rate(sdi);
 300
 301         return ret;
 302 }
 303
 304 static int config_list(uint32_t key, GVariant **data,
 305                 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 306 {
 307         struct dev_context *devc;
 308         const struct scope_config *model;
 309
 310         devc = (sdi) ? sdi->priv : NULL;
 311         model = (devc) ? devc->model_config : NULL;
 312
 313         switch (key) {
 314         case SR_CONF_SCAN_OPTIONS:
 315                 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, NULL, NULL);
 316         case SR_CONF_DEVICE_OPTIONS:
 317                 if (!cg)
 318                         return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
 319                 *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog));
 320                 break;
 321         case SR_CONF_COUPLING:
 322                 *data = g_variant_new_strv(*model->coupling_options, model->num_coupling_options);
 323                 break;
 324         case SR_CONF_TRIGGER_SOURCE:
 325                 if (!model)
 326                         return SR_ERR_ARG;
 327                 *data = g_variant_new_strv(*model->trigger_sources, model->num_trigger_sources);
 328                 break;
 329         case SR_CONF_TRIGGER_SLOPE:
 330                 if (!model)
 331                         return SR_ERR_ARG;
 332                 *data = g_variant_new_strv(*model->trigger_slopes, model->num_trigger_slopes);
 333                 break;
 334         case SR_CONF_TIMEBASE:
 335                 if (!model)
 336                         return SR_ERR_ARG;
 337                 *data = std_gvar_tuple_array(*model->timebases, model->num_timebases);
 338                 break;
 339         case SR_CONF_VDIV:
 340                 if (!model)
 341                         return SR_ERR_ARG;
 342                 *data = std_gvar_tuple_array(*model->vdivs, model->num_vdivs);
 343                 break;
 344         default:
 345                 return SR_ERR_NA;
 346         }
 347
 348         return SR_OK;
 349 }
 350
 351 SR_PRIV int lecroy_xstream_request_data(const struct sr_dev_inst *sdi)
 352 {
 353         char command[MAX_COMMAND_SIZE];
 354         struct sr_channel *ch;
 355         struct dev_context *devc;
 356
 357         devc = sdi->priv;
 358         ch = devc->current_channel->data;
 359
 360         if (ch->type != SR_CHANNEL_ANALOG)
 361                 return SR_ERR;
 362
 363         g_snprintf(command, sizeof(command), "C%d:WAVEFORM?", ch->index + 1);
 364         return sr_scpi_send(sdi->conn, command);
 365 }
 366
 367 static int setup_channels(const struct sr_dev_inst *sdi)
 368 {
 369         GSList *l;
 370         gboolean setup_changed;
 371         char command[MAX_COMMAND_SIZE];
 372         struct scope_state *state;
 373         struct sr_channel *ch;
 374         struct dev_context *devc;
 375         struct sr_scpi_dev_inst *scpi;
 376
 377         devc = sdi->priv;
 378         scpi = sdi->conn;
 379         state = devc->model_state;
 380         setup_changed = FALSE;
 381
 382         for (l = sdi->channels; l; l = l->next) {
 383                 ch = l->data;
 384                 switch (ch->type) {
 385                 case SR_CHANNEL_ANALOG:
 386                         if (ch->enabled == state->analog_channels[ch->index].state)
 387                                 break;
 388                         g_snprintf(command, sizeof(command), "C%d:TRACE %s",
 389                                         ch->index + 1, ch->enabled ? "ON" : "OFF");
 390
 391                         if (sr_scpi_send(scpi, command) != SR_OK)
 392                                 return SR_ERR;
 393
 394                         state->analog_channels[ch->index].state = ch->enabled;
 395                         setup_changed = TRUE;
 396                         break;
 397                 default:
 398                         return SR_ERR;
 399                 }
 400         }
 401
 402         if (setup_changed && lecroy_xstream_update_sample_rate(sdi) != SR_OK)
 403                 return SR_ERR;
 404
 405         return SR_OK;
 406 }
 407
 408 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 409 {
 410         GSList *l;
 411         struct sr_channel *ch;
 412         struct dev_context *devc;
 413         int ret;
 414         struct sr_scpi_dev_inst *scpi;
 415
 416         devc = sdi->priv;
 417         scpi = sdi->conn;
 418
 419         /* Preset empty results. */
 420         g_slist_free(devc->enabled_channels);
 421         devc->enabled_channels = NULL;
 422
 423         /*
 424          * Contruct the list of enabled channels. Determine the highest
 425          * number of digital pods involved in the acquisition.
 426          */
 427
 428         for (l = sdi->channels; l; l = l->next) {
 429                 ch = l->data;
 430                 if (!ch->enabled)
 431                         continue;
 432                 /* Only add a single digital channel per group (pod). */
 433                 devc->enabled_channels = g_slist_append(
 434                         devc->enabled_channels, ch);
 435         }
 436
 437         if (!devc->enabled_channels)
 438                 return SR_ERR;
 439
 440         /*
 441          * Configure the analog channels and the
 442          * corresponding digital pods.
 443          */
 444         if (setup_channels(sdi) != SR_OK) {
 445                 sr_err("Failed to setup channel configuration!");
 446                 ret = SR_ERR;
 447                 goto free_enabled;
 448         }
 449
 450         /*
 451          * Start acquisition on the first enabled channel. The
 452          * receive routine will continue driving the acquisition.
 453          */
 454         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
 455                         lecroy_xstream_receive_data, (void *)sdi);
 456
 457         std_session_send_df_header(sdi);
 458
 459         devc->current_channel = devc->enabled_channels;
 460
 461         return lecroy_xstream_request_data(sdi);
 462
 463 free_enabled:
 464         g_slist_free(devc->enabled_channels);
 465         devc->enabled_channels = NULL;
 466
 467         return ret;
 468 }
 469
 470 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 471 {
 472         struct dev_context *devc;
 473         struct sr_scpi_dev_inst *scpi;
 474
 475         std_session_send_df_end(sdi);
 476
 477         devc = sdi->priv;
 478
 479         devc->num_frames = 0;
 480         g_slist_free(devc->enabled_channels);
 481         devc->enabled_channels = NULL;
 482         scpi = sdi->conn;
 483         sr_scpi_source_remove(sdi->session, scpi);
 484
 485         return SR_OK;
 486 }
 487
 488 static struct sr_dev_driver lecroy_xstream_driver_info = {
 489         .name = "lecroy-xstream",
 490         .longname = "LeCroy X-Stream",
 491         .api_version = 1,
 492         .init = std_init,
 493         .cleanup = std_cleanup,
 494         .scan = scan,
 495         .dev_list = std_dev_list,
 496         .dev_clear = dev_clear,
 497         .config_get = config_get,
 498         .config_set = config_set,
 499         .config_list = config_list,
 500         .dev_open = dev_open,
 501         .dev_close = dev_close,
 502         .dev_acquisition_start = dev_acquisition_start,
 503         .dev_acquisition_stop = dev_acquisition_stop,
 504         .context = NULL,
 505 };
 506 SR_REGISTER_DEV_DRIVER(lecroy_xstream_driver_info);