src/hardware/yokogawa-dlm/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2014 abraxa (Soeren Apel) <soeren@apelpie.net>
   5  * Based on the Hameg HMO driver by poljar (Damir Jelić) <poljarinho@gmail.com>
   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 <stdlib.h>
  22 #include "protocol.h"
  23
  24 SR_PRIV struct sr_dev_driver yokogawa_dlm_driver_info;
  25
  26 static const char *MANUFACTURER_ID = "YOKOGAWA";
  27 static const char *MANUFACTURER_NAME = "Yokogawa";
  28
  29 static const uint32_t dlm_scanopts[] = {
  30         SR_CONF_CONN,
  31 };
  32
  33 static const uint32_t dlm_drvopts[] = {
  34         SR_CONF_LOGIC_ANALYZER,
  35         SR_CONF_OSCILLOSCOPE,
  36 };
  37
  38 static const uint32_t dlm_devopts[] = {
  39         SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
  40         SR_CONF_SAMPLERATE | SR_CONF_GET,
  41         SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  42         SR_CONF_NUM_HDIV | SR_CONF_GET,
  43         SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
  44         SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  45         SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  46 };
  47
  48 static const uint32_t dlm_analog_devopts[] = {
  49         SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  50         SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  51         SR_CONF_NUM_VDIV | SR_CONF_GET,
  52 };
  53
  54 static const uint32_t dlm_digital_devopts[] = {
  55 };
  56
  57 enum {
  58         CG_INVALID = -1,
  59         CG_NONE,
  60         CG_ANALOG,
  61         CG_DIGITAL,
  62 };
  63
  64 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
  65 {
  66         return std_init(sr_ctx, di, LOG_PREFIX);
  67 }
  68
  69 static struct sr_dev_inst *probe_usbtmc_device(struct sr_scpi_dev_inst *scpi)
  70 {
  71         struct sr_dev_inst *sdi;
  72         struct dev_context *devc;
  73         struct sr_scpi_hw_info *hw_info;
  74         char *model_name;
  75         int model_index;
  76
  77         sdi = NULL;
  78         devc = NULL;
  79         hw_info = NULL;
  80
  81         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
  82                 sr_info("Couldn't get IDN response.");
  83                 goto fail;
  84         }
  85
  86         if (strcmp(hw_info->manufacturer, MANUFACTURER_ID) != 0)
  87                 goto fail;
  88
  89         if (dlm_model_get(hw_info->model, &model_name, &model_index) != SR_OK)
  90                 goto fail;
  91
  92         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  93         sdi->status = SR_ST_ACTIVE;
  94         sdi->vendor = g_strdup(MANUFACTURER_NAME);
  95         sdi->model = g_strdup(model_name);
  96         sdi->version = g_strdup(hw_info->firmware_version);
  97
  98         sdi->serial_num = g_strdup(hw_info->serial_number);
  99
 100         sr_scpi_hw_info_free(hw_info);
 101         hw_info = NULL;
 102
 103         devc = g_malloc0(sizeof(struct dev_context));
 104
 105         sdi->driver = &yokogawa_dlm_driver_info;
 106         sdi->priv = devc;
 107         sdi->inst_type = SR_INST_SCPI;
 108         sdi->conn = scpi;
 109
 110         if (dlm_device_init(sdi, model_index) != SR_OK)
 111                 goto fail;
 112
 113         sr_scpi_close(sdi->conn);
 114
 115         sdi->status = SR_ST_INACTIVE;
 116         return sdi;
 117
 118 fail:
 119         if (hw_info)
 120                 sr_scpi_hw_info_free(hw_info);
 121         if (sdi)
 122                 sr_dev_inst_free(sdi);
 123         g_free(devc);
 124
 125         return NULL;
 126 }
 127
 128 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 129 {
 130         return sr_scpi_scan(di->priv, options, probe_usbtmc_device);
 131 }
 132
 133 static GSList *dev_list(const struct sr_dev_driver *di)
 134 {
 135         return ((struct drv_context *)(di->priv))->instances;
 136 }
 137
 138 static void clear_helper(void *priv)
 139 {
 140         struct dev_context *devc;
 141
 142         devc = priv;
 143
 144         dlm_scope_state_destroy(devc->model_state);
 145
 146         g_free(devc->analog_groups);
 147         g_free(devc->digital_groups);
 148         g_free(devc);
 149 }
 150
 151 static int dev_clear(const struct sr_dev_driver *di)
 152 {
 153         return std_dev_clear(di, clear_helper);
 154 }
 155
 156 static int dev_open(struct sr_dev_inst *sdi)
 157 {
 158         if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
 159                 return SR_ERR;
 160
 161         if (dlm_scope_state_query(sdi) != SR_OK)
 162                 return SR_ERR;
 163
 164         sdi->status = SR_ST_ACTIVE;
 165
 166         return SR_OK;
 167 }
 168
 169 static int dev_close(struct sr_dev_inst *sdi)
 170 {
 171         if (sdi->status == SR_ST_INACTIVE)
 172                 return SR_OK;
 173
 174         sr_scpi_close(sdi->conn);
 175
 176         sdi->status = SR_ST_INACTIVE;
 177
 178         return SR_OK;
 179 }
 180
 181 static int cleanup(const struct sr_dev_driver *di)
 182 {
 183         dev_clear(di);
 184
 185         return SR_OK;
 186 }
 187
 188 /**
 189  * Check which category a given channel group belongs to.
 190  *
 191  * @param devc Our internal device context.
 192  * @param cg   The channel group to check.
 193  *
 194  * @retval CG_NONE    cg is NULL
 195  * @retval CG_ANALOG  cg is an analog group
 196  * @retval CG_DIGITAL cg is a digital group
 197  * @retval CG_INVALID cg is something else
 198  */
 199 static int check_channel_group(struct dev_context *devc,
 200                         const struct sr_channel_group *cg)
 201 {
 202         unsigned int i;
 203         const struct scope_config *model;
 204
 205         model = devc->model_config;
 206
 207         if (!cg)
 208                 return CG_NONE;
 209
 210         for (i = 0; i < model->analog_channels; ++i)
 211                 if (cg == devc->analog_groups[i])
 212                         return CG_ANALOG;
 213
 214         for (i = 0; i < model->pods; ++i)
 215                 if (cg == devc->digital_groups[i])
 216                         return CG_DIGITAL;
 217
 218         sr_err("Invalid channel group specified.");
 219         return CG_INVALID;
 220 }
 221
 222 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 223                 const struct sr_channel_group *cg)
 224 {
 225         int ret, cg_type;
 226         unsigned int i;
 227         struct dev_context *devc;
 228         const struct scope_config *model;
 229         struct scope_state *state;
 230
 231         if (!sdi || !(devc = sdi->priv))
 232                 return SR_ERR_ARG;
 233
 234         if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 235                 return SR_ERR;
 236
 237         ret = SR_ERR_NA;
 238         model = devc->model_config;
 239         state = devc->model_state;
 240
 241         switch (key) {
 242         case SR_CONF_NUM_HDIV:
 243                 *data = g_variant_new_int32(model->num_xdivs);
 244                 ret = SR_OK;
 245                 break;
 246         case SR_CONF_TIMEBASE:
 247                 *data = g_variant_new("(tt)",
 248                                 dlm_timebases[state->timebase][0],
 249                                 dlm_timebases[state->timebase][1]);
 250                 ret = SR_OK;
 251                 break;
 252         case SR_CONF_NUM_VDIV:
 253                 if (cg_type == CG_NONE) {
 254                         sr_err("No channel group specified.");
 255                         return SR_ERR_CHANNEL_GROUP;
 256                 } else if (cg_type == CG_ANALOG) {
 257                                 *data = g_variant_new_int32(model->num_ydivs);
 258                                 ret = SR_OK;
 259                                 break;
 260                 } else {
 261                         ret = SR_ERR_NA;
 262                 }
 263                 break;
 264         case SR_CONF_VDIV:
 265                 ret = SR_ERR_NA;
 266                 if (cg_type == CG_NONE) {
 267                         sr_err("No channel group specified.");
 268                         return SR_ERR_CHANNEL_GROUP;
 269                 } else if (cg_type != CG_ANALOG)
 270                         break;
 271
 272                 for (i = 0; i < model->analog_channels; ++i) {
 273                         if (cg != devc->analog_groups[i])
 274                                 continue;
 275                         *data = g_variant_new("(tt)",
 276                                         dlm_vdivs[state->analog_states[i].vdiv][0],
 277                                         dlm_vdivs[state->analog_states[i].vdiv][1]);
 278                         ret = SR_OK;
 279                         break;
 280                 }
 281                 break;
 282         case SR_CONF_TRIGGER_SOURCE:
 283                 *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
 284                 ret = SR_OK;
 285                 break;
 286         case SR_CONF_TRIGGER_SLOPE:
 287                 *data = g_variant_new_string(dlm_trigger_slopes[state->trigger_slope]);
 288                 ret = SR_OK;
 289                 break;
 290         case SR_CONF_HORIZ_TRIGGERPOS:
 291                 *data = g_variant_new_double(state->horiz_triggerpos);
 292                 ret = SR_OK;
 293                 break;
 294         case SR_CONF_COUPLING:
 295                 ret = SR_ERR_NA;
 296                 if (cg_type == CG_NONE) {
 297                         sr_err("No channel group specified.");
 298                         return SR_ERR_CHANNEL_GROUP;
 299                 } else if (cg_type != CG_ANALOG)
 300                         break;
 301
 302                 for (i = 0; i < model->analog_channels; ++i) {
 303                         if (cg != devc->analog_groups[i])
 304                                 continue;
 305                         *data = g_variant_new_string((*model->coupling_options)[state->analog_states[i].coupling]);
 306                         ret = SR_OK;
 307                         break;
 308                 }
 309                 break;
 310         case SR_CONF_SAMPLERATE:
 311                 *data = g_variant_new_uint64(state->sample_rate);
 312                 ret = SR_OK;
 313                 break;
 314         default:
 315                 ret = SR_ERR_NA;
 316         }
 317
 318         return ret;
 319 }
 320
 321 static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n)
 322 {
 323         unsigned int i;
 324         GVariant *rational[2];
 325         GVariantBuilder gvb;
 326
 327         g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 328
 329         for (i = 0; i < n; i++) {
 330                 rational[0] = g_variant_new_uint64((*array)[i][0]);
 331                 rational[1] = g_variant_new_uint64((*array)[i][1]);
 332
 333                 /* FIXME: Valgrind reports a memory leak here. */
 334                 g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
 335         }
 336
 337         return g_variant_builder_end(&gvb);
 338 }
 339
 340 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 341                 const struct sr_channel_group *cg)
 342 {
 343         int ret, cg_type;
 344         unsigned int i, j;
 345         char float_str[30];
 346         struct dev_context *devc;
 347         const struct scope_config *model;
 348         struct scope_state *state;
 349         const char *tmp;
 350         uint64_t p, q;
 351         double tmp_d;
 352         gboolean update_sample_rate;
 353
 354         if (!sdi || !(devc = sdi->priv))
 355                 return SR_ERR_ARG;
 356
 357         if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 358                 return SR_ERR;
 359
 360         model = devc->model_config;
 361         state = devc->model_state;
 362         update_sample_rate = FALSE;
 363
 364         ret = SR_ERR_NA;
 365
 366         switch (key) {
 367         case SR_CONF_LIMIT_FRAMES:
 368                 devc->frame_limit = g_variant_get_uint64(data);
 369                 ret = SR_OK;
 370                 break;
 371         case SR_CONF_TRIGGER_SOURCE:
 372                 tmp = g_variant_get_string(data, NULL);
 373                 for (i = 0; (*model->trigger_sources)[i]; i++) {
 374                         if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
 375                                 continue;
 376                         state->trigger_source = i;
 377                         /* TODO: A and B trigger support possible? */
 378                         ret = dlm_trigger_source_set(sdi->conn, (*model->trigger_sources)[i]);
 379                         break;
 380                 }
 381                 break;
 382         case SR_CONF_VDIV:
 383                 if (cg_type == CG_NONE) {
 384                         sr_err("No channel group specified.");
 385                         return SR_ERR_CHANNEL_GROUP;
 386                 }
 387
 388                 g_variant_get(data, "(tt)", &p, &q);
 389
 390                 for (i = 0; i < ARRAY_SIZE(dlm_vdivs); i++) {
 391                         if (p != dlm_vdivs[i][0] ||
 392                                         q != dlm_vdivs[i][1])
 393                                 continue;
 394                         for (j = 1; j <= model->analog_channels; ++j) {
 395                                 if (cg != devc->analog_groups[j - 1])
 396                                         continue;
 397                                 state->analog_states[j - 1].vdiv = i;
 398                                 g_ascii_formatd(float_str, sizeof(float_str),
 399                                                 "%E", (float) p / q);
 400                                 if (dlm_analog_chan_vdiv_set(sdi->conn, j, float_str) != SR_OK ||
 401                                                 sr_scpi_get_opc(sdi->conn) != SR_OK)
 402                                         return SR_ERR;
 403
 404                                 break;
 405                         }
 406
 407                         ret = SR_OK;
 408                         break;
 409                 }
 410                 break;
 411         case SR_CONF_TIMEBASE:
 412                 g_variant_get(data, "(tt)", &p, &q);
 413
 414                 for (i = 0; i < ARRAY_SIZE(dlm_timebases); i++) {
 415                         if (p != dlm_timebases[i][0] ||
 416                                         q != dlm_timebases[i][1])
 417                                 continue;
 418                         state->timebase = i;
 419                         g_ascii_formatd(float_str, sizeof(float_str),
 420                                         "%E", (float) p / q);
 421                         ret = dlm_timebase_set(sdi->conn, float_str);
 422                         update_sample_rate = TRUE;
 423                         break;
 424                 }
 425                 break;
 426         case SR_CONF_HORIZ_TRIGGERPOS:
 427                 tmp_d = g_variant_get_double(data);
 428
 429                 /* TODO: Check if the calculation makes sense for the DLM. */
 430                 if (tmp_d < 0.0 || tmp_d > 1.0)
 431                         return SR_ERR;
 432
 433                 state->horiz_triggerpos = tmp_d;
 434                 tmp_d = -(tmp_d - 0.5) *
 435                                 ((double) dlm_timebases[state->timebase][0] /
 436                                 dlm_timebases[state->timebase][1])
 437                                 * model->num_xdivs;
 438
 439                 g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
 440                 ret = dlm_horiz_trigger_pos_set(sdi->conn, float_str);
 441                 break;
 442         case SR_CONF_TRIGGER_SLOPE:
 443                 tmp = g_variant_get_string(data, NULL);
 444
 445                 if (!tmp || !(tmp[0] == 'f' || tmp[0] == 'r'))
 446                         return SR_ERR_ARG;
 447
 448                 /* Note: See dlm_trigger_slopes[] in protocol.c. */
 449                 state->trigger_slope = (tmp[0] == 'r') ?
 450                                 SLOPE_POSITIVE : SLOPE_NEGATIVE;
 451
 452                 ret = dlm_trigger_slope_set(sdi->conn, state->trigger_slope);
 453                 break;
 454         case SR_CONF_COUPLING:
 455                 if (cg_type == CG_NONE) {
 456                         sr_err("No channel group specified.");
 457                         return SR_ERR_CHANNEL_GROUP;
 458                 }
 459
 460                 tmp = g_variant_get_string(data, NULL);
 461
 462                 for (i = 0; (*model->coupling_options)[i]; i++) {
 463                         if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
 464                                 continue;
 465                         for (j = 1; j <= model->analog_channels; ++j) {
 466                                 if (cg != devc->analog_groups[j - 1])
 467                                         continue;
 468                                 state->analog_states[j-1].coupling = i;
 469
 470                                 if (dlm_analog_chan_coupl_set(sdi->conn, j, tmp) != SR_OK ||
 471                                                 sr_scpi_get_opc(sdi->conn) != SR_OK)
 472                                         return SR_ERR;
 473                                 break;
 474                         }
 475
 476                         ret = SR_OK;
 477                         break;
 478                 }
 479                 break;
 480         default:
 481                 ret = SR_ERR_NA;
 482                 break;
 483         }
 484
 485         if (ret == SR_OK)
 486                 ret = sr_scpi_get_opc(sdi->conn);
 487
 488         if (ret == SR_OK && update_sample_rate)
 489                 ret = dlm_sample_rate_query(sdi);
 490
 491         return ret;
 492 }
 493
 494 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 495                 const struct sr_channel_group *cg)
 496 {
 497         int cg_type = CG_NONE;
 498         struct dev_context *devc = NULL;
 499         const struct scope_config *model = NULL;
 500
 501         /* SR_CONF_SCAN_OPTIONS is always valid, regardless of sdi or probe group. */
 502         if (key == SR_CONF_SCAN_OPTIONS) {
 503                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 504                                 dlm_scanopts, ARRAY_SIZE(dlm_scanopts), sizeof(uint32_t));
 505                 return SR_OK;
 506         }
 507
 508         /* If sdi is NULL, nothing except SR_CONF_DEVICE_OPTIONS can be provided. */
 509         if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
 510                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 511                                 dlm_drvopts, ARRAY_SIZE(dlm_drvopts), sizeof(uint32_t));
 512                 return SR_OK;
 513         }
 514
 515         if (!sdi)
 516                 return SR_ERR_ARG;
 517
 518         devc = sdi->priv;
 519         model = devc->model_config;
 520
 521         /* If cg is NULL, only the SR_CONF_DEVICE_OPTIONS that are not
 522          * specific to a probe group must be returned. */
 523         if (!cg) {
 524                 switch (key) {
 525                 case SR_CONF_DEVICE_OPTIONS:
 526                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 527                                         dlm_devopts, ARRAY_SIZE(dlm_devopts), sizeof(uint32_t));
 528                         return SR_OK;
 529                 case SR_CONF_TIMEBASE:
 530                         *data = build_tuples(&dlm_timebases, ARRAY_SIZE(dlm_timebases));
 531                         return SR_OK;
 532                 case SR_CONF_TRIGGER_SOURCE:
 533                         if (!model)
 534                                 return SR_ERR_ARG;
 535                         *data = g_variant_new_strv(*model->trigger_sources,
 536                                         g_strv_length((char **)*model->trigger_sources));
 537                         return SR_OK;
 538                 case SR_CONF_TRIGGER_SLOPE:
 539                         *data = g_variant_new_strv(dlm_trigger_slopes,
 540                                         g_strv_length((char **)dlm_trigger_slopes));
 541                         return SR_OK;
 542                 case SR_CONF_NUM_HDIV:
 543                         *data = g_variant_new_uint32(ARRAY_SIZE(dlm_timebases));
 544                         return SR_OK;
 545                 default:
 546                         return SR_ERR_NA;
 547                 }
 548         }
 549
 550         if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 551                 return SR_ERR;
 552
 553         switch (key) {
 554         case SR_CONF_DEVICE_OPTIONS:
 555                 if (cg_type == CG_ANALOG) {
 556                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 557                                 dlm_analog_devopts, ARRAY_SIZE(dlm_analog_devopts), sizeof(uint32_t));
 558                 } else if (cg_type == CG_DIGITAL) {
 559                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 560                                 dlm_digital_devopts, ARRAY_SIZE(dlm_digital_devopts), sizeof(uint32_t));
 561                 } else {
 562                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 563                                 NULL, 0, sizeof(uint32_t));
 564                 }
 565                 break;
 566         case SR_CONF_COUPLING:
 567                 if (cg_type == CG_NONE)
 568                         return SR_ERR_CHANNEL_GROUP;
 569                 *data = g_variant_new_strv(*model->coupling_options,
 570                                 g_strv_length((char **)*model->coupling_options));
 571                 break;
 572         case SR_CONF_VDIV:
 573                 if (cg_type == CG_NONE)
 574                         return SR_ERR_CHANNEL_GROUP;
 575                 *data = build_tuples(&dlm_vdivs, ARRAY_SIZE(dlm_vdivs));
 576                 break;
 577         default:
 578                 return SR_ERR_NA;
 579         }
 580
 581         return SR_OK;
 582 }
 583
 584 static int dlm_check_channels(GSList *channels)
 585 {
 586         GSList *l;
 587         struct sr_channel *ch;
 588         gboolean enabled_pod1, enabled_chan4;
 589
 590         enabled_pod1 = enabled_chan4 = FALSE;
 591
 592         /* Note: On the DLM2000, CH4 and Logic are shared. */
 593         /* TODO Handle non-DLM2000 models. */
 594         for (l = channels; l; l = l->next) {
 595                 ch = l->data;
 596                 switch (ch->type) {
 597                 case SR_CHANNEL_ANALOG:
 598                         if (ch->index == 3)
 599                                 enabled_chan4 = TRUE;
 600                         break;
 601                 case SR_CHANNEL_LOGIC:
 602                         enabled_pod1 = TRUE;
 603                         break;
 604                 default:
 605                         return SR_ERR;
 606                 }
 607         }
 608
 609         if (enabled_pod1 && enabled_chan4)
 610                 return SR_ERR;
 611
 612         return SR_OK;
 613 }
 614
 615 static int dlm_setup_channels(const struct sr_dev_inst *sdi)
 616 {
 617         GSList *l;
 618         unsigned int i;
 619         gboolean *pod_enabled, setup_changed;
 620         struct scope_state *state;
 621         const struct scope_config *model;
 622         struct sr_channel *ch;
 623         struct dev_context *devc;
 624         struct sr_scpi_dev_inst *scpi;
 625
 626         devc = sdi->priv;
 627         scpi = sdi->conn;
 628         state = devc->model_state;
 629         model = devc->model_config;
 630         setup_changed = FALSE;
 631
 632         pod_enabled = g_malloc0(sizeof(gboolean) * model->pods);
 633
 634         for (l = sdi->channels; l; l = l->next) {
 635                 ch = l->data;
 636                 switch (ch->type) {
 637                 case SR_CHANNEL_ANALOG:
 638                         if (ch->enabled == state->analog_states[ch->index].state)
 639                                 break;
 640
 641                         if (dlm_analog_chan_state_set(scpi, ch->index + 1,
 642                                         ch->enabled) != SR_OK)
 643                                 return SR_ERR;
 644
 645                         state->analog_states[ch->index].state = ch->enabled;
 646                         setup_changed = TRUE;
 647                         break;
 648                 case SR_CHANNEL_LOGIC:
 649                         i = ch->index - DLM_DIG_CHAN_INDEX_OFFS;
 650                         if (ch->enabled)
 651                                 pod_enabled[i / 8] = TRUE;
 652
 653                         if (ch->enabled == state->digital_states[i])
 654                                 break;
 655
 656                         if (dlm_digital_chan_state_set(scpi, i + 1,
 657                                         ch->enabled) != SR_OK)
 658                                 return SR_ERR;
 659
 660                         state->digital_states[i] = ch->enabled;
 661                         setup_changed = TRUE;
 662                         break;
 663                 default:
 664                         return SR_ERR;
 665                 }
 666         }
 667
 668         for (i = 1; i <= model->pods; ++i) {
 669                 if (state->pod_states[i - 1] == pod_enabled[i - 1])
 670                         continue;
 671
 672                 if (dlm_digital_pod_state_set(scpi, i,
 673                                 pod_enabled[i - 1]) != SR_OK)
 674                         return SR_ERR;
 675
 676                 state->pod_states[i - 1] = pod_enabled[i - 1];
 677                 setup_changed = TRUE;
 678         }
 679
 680         g_free(pod_enabled);
 681
 682         if (setup_changed && dlm_sample_rate_query(sdi) != SR_OK)
 683                 return SR_ERR;
 684
 685         return SR_OK;
 686 }
 687
 688 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 689 {
 690         GSList *l;
 691         gboolean digital_added;
 692         struct sr_channel *ch;
 693         struct dev_context *devc;
 694         struct sr_scpi_dev_inst *scpi;
 695
 696         (void)cb_data;
 697
 698         if (sdi->status != SR_ST_ACTIVE)
 699                 return SR_ERR_DEV_CLOSED;
 700
 701         scpi = sdi->conn;
 702         devc = sdi->priv;
 703         digital_added = FALSE;
 704
 705         g_slist_free(devc->enabled_channels);
 706         devc->enabled_channels = NULL;
 707
 708         for (l = sdi->channels; l; l = l->next) {
 709                 ch = l->data;
 710                 if (!ch->enabled)
 711                         continue;
 712                 /* Only add a single digital channel. */
 713                 if (ch->type != SR_CHANNEL_LOGIC || !digital_added) {
 714                         devc->enabled_channels = g_slist_append(
 715                                 devc->enabled_channels, ch);
 716                         if (ch->type == SR_CHANNEL_LOGIC)
 717                                 digital_added = TRUE;
 718                 }
 719         }
 720
 721         if (!devc->enabled_channels)
 722                 return SR_ERR;
 723
 724         if (dlm_check_channels(devc->enabled_channels) != SR_OK) {
 725                 sr_err("Invalid channel configuration specified!");
 726                 return SR_ERR_NA;
 727         }
 728
 729         if (dlm_setup_channels(sdi) != SR_OK) {
 730                 sr_err("Failed to setup channel configuration!");
 731                 return SR_ERR;
 732         }
 733
 734         /* Request data for the first enabled channel. */
 735         devc->current_channel = devc->enabled_channels;
 736         dlm_channel_data_request(sdi);
 737
 738         /* Call our callback when data comes in or after 5ms. */
 739         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 5,
 740                         dlm_data_receive, (void *)sdi);
 741
 742         return SR_OK;
 743 }
 744
 745 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 746 {
 747         struct dev_context *devc;
 748         struct sr_datafeed_packet packet;
 749
 750         (void)cb_data;
 751
 752         packet.type = SR_DF_END;
 753         packet.payload = NULL;
 754         sr_session_send(sdi, &packet);
 755
 756         if (sdi->status != SR_ST_ACTIVE)
 757                 return SR_ERR_DEV_CLOSED;
 758
 759         devc = sdi->priv;
 760
 761         devc->num_frames = 0;
 762         g_slist_free(devc->enabled_channels);
 763         devc->enabled_channels = NULL;
 764
 765         sr_scpi_source_remove(sdi->session, sdi->conn);
 766
 767         return SR_OK;
 768 }
 769
 770 SR_PRIV struct sr_dev_driver yokogawa_dlm_driver_info = {
 771         .name = "yokogawa-dlm",
 772         .longname = "Yokogawa DL/DLM",
 773         .api_version = 1,
 774         .init = init,
 775         .cleanup = cleanup,
 776         .scan = scan,
 777         .dev_list = dev_list,
 778         .dev_clear = dev_clear,
 779         .config_get = config_get,
 780         .config_set = config_set,
 781         .config_list = config_list,
 782         .dev_open = dev_open,
 783         .dev_close = dev_close,
 784         .dev_acquisition_start = dev_acquisition_start,
 785         .dev_acquisition_stop = dev_acquisition_stop,
 786         .priv = NULL,
 787 };