src/hardware/hameg-hmo/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com>
   5  * Copyright (C) 2018 Guido Trentalancia <guido@trentalancia.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 <config.h>
  22 #include <stdlib.h>
  23 #include "scpi.h"
  24 #include "protocol.h"
  25
  26 static struct sr_dev_driver hameg_hmo_driver_info;
  27
  28 static const char *manufacturers[] = {
  29         "HAMEG",
  30         "Rohde&Schwarz",
  31 };
  32
  33 static const uint32_t scanopts[] = {
  34         SR_CONF_CONN,
  35         SR_CONF_SERIALCOMM,
  36 };
  37
  38 static const uint32_t drvopts[] = {
  39         SR_CONF_OSCILLOSCOPE,
  40         SR_CONF_LOGIC_ANALYZER,
  41 };
  42
  43 enum {
  44         CG_INVALID = -1,
  45         CG_NONE,
  46         CG_ANALOG,
  47         CG_DIGITAL,
  48 };
  49
  50 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
  51 {
  52         struct sr_dev_inst *sdi;
  53         struct dev_context *devc;
  54         struct sr_scpi_hw_info *hw_info;
  55
  56         sdi = NULL;
  57         devc = NULL;
  58         hw_info = NULL;
  59
  60         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
  61                 sr_info("Couldn't get IDN response.");
  62                 goto fail;
  63         }
  64
  65         if (std_str_idx_s(hw_info->manufacturer, ARRAY_AND_SIZE(manufacturers)) < 0)
  66                 goto fail;
  67
  68         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  69         sdi->vendor = g_strdup(hw_info->manufacturer);
  70         sdi->model = g_strdup(hw_info->model);
  71         sdi->version = g_strdup(hw_info->firmware_version);
  72         sdi->serial_num = g_strdup(hw_info->serial_number);
  73         sdi->driver = &hameg_hmo_driver_info;
  74         sdi->inst_type = SR_INST_SCPI;
  75         sdi->conn = scpi;
  76
  77         sr_scpi_hw_info_free(hw_info);
  78         hw_info = NULL;
  79
  80         devc = g_malloc0(sizeof(struct dev_context));
  81
  82         sdi->priv = devc;
  83
  84         if (hmo_init_device(sdi) != SR_OK)
  85                 goto fail;
  86
  87         return sdi;
  88
  89 fail:
  90         sr_scpi_hw_info_free(hw_info);
  91         sr_dev_inst_free(sdi);
  92         g_free(devc);
  93
  94         return NULL;
  95 }
  96
  97 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  98 {
  99         return sr_scpi_scan(di->context, options, probe_device);
 100 }
 101
 102 static void clear_helper(struct dev_context *devc)
 103 {
 104         hmo_scope_state_free(devc->model_state);
 105         g_free(devc->analog_groups);
 106         g_free(devc->digital_groups);
 107 }
 108
 109 static int dev_clear(const struct sr_dev_driver *di)
 110 {
 111         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 112 }
 113
 114 static int dev_open(struct sr_dev_inst *sdi)
 115 {
 116         if (sr_scpi_open(sdi->conn) != SR_OK)
 117                 return SR_ERR;
 118
 119         if (hmo_scope_state_get(sdi) != SR_OK)
 120                 return SR_ERR;
 121
 122         return SR_OK;
 123 }
 124
 125 static int dev_close(struct sr_dev_inst *sdi)
 126 {
 127         return sr_scpi_close(sdi->conn);
 128 }
 129
 130 static int check_channel_group(struct dev_context *devc,
 131                              const struct sr_channel_group *cg)
 132 {
 133         const struct scope_config *model;
 134
 135         model = devc->model_config;
 136
 137         if (!cg)
 138                 return CG_NONE;
 139
 140         if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) >= 0)
 141                 return CG_ANALOG;
 142
 143         if (std_cg_idx(cg, devc->digital_groups, model->digital_pods) >= 0)
 144                 return CG_DIGITAL;
 145
 146         sr_err("Invalid channel group specified.");
 147
 148         return CG_INVALID;
 149 }
 150
 151 static int config_get(uint32_t key, GVariant **data,
 152         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 153 {
 154         int cg_type, idx, i;
 155         struct dev_context *devc;
 156         const struct scope_config *model;
 157         struct scope_state *state;
 158
 159         if (!sdi)
 160                 return SR_ERR_ARG;
 161
 162         devc = sdi->priv;
 163
 164         if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 165                 return SR_ERR;
 166
 167         model = devc->model_config;
 168         state = devc->model_state;
 169
 170         switch (key) {
 171         case SR_CONF_NUM_HDIV:
 172                 *data = g_variant_new_int32(model->num_xdivs);
 173                 break;
 174         case SR_CONF_TIMEBASE:
 175                 *data = g_variant_new("(tt)", (*model->timebases)[state->timebase][0],
 176                                       (*model->timebases)[state->timebase][1]);
 177                 break;
 178         case SR_CONF_NUM_VDIV:
 179                 if (!cg)
 180                         return SR_ERR_CHANNEL_GROUP;
 181                 if (cg_type != CG_ANALOG)
 182                         return SR_ERR_NA;
 183                 if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) < 0)
 184                         return SR_ERR_ARG;
 185                 *data = g_variant_new_int32(model->num_ydivs);
 186                 break;
 187         case SR_CONF_VDIV:
 188                 if (!cg)
 189                         return SR_ERR_CHANNEL_GROUP;
 190                 if (cg_type != CG_ANALOG)
 191                         return SR_ERR_NA;
 192                 if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
 193                         return SR_ERR_ARG;
 194                 *data = g_variant_new("(tt)",
 195                                       (*model->vdivs)[state->analog_channels[idx].vdiv][0],
 196                                       (*model->vdivs)[state->analog_channels[idx].vdiv][1]);
 197                 break;
 198         case SR_CONF_TRIGGER_SOURCE:
 199                 *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
 200                 break;
 201         case SR_CONF_TRIGGER_SLOPE:
 202                 *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]);
 203                 break;
 204         case SR_CONF_TRIGGER_PATTERN:
 205                 *data = g_variant_new_string(state->trigger_pattern);
 206                 break;
 207         case SR_CONF_HORIZ_TRIGGERPOS:
 208                 *data = g_variant_new_double(state->horiz_triggerpos);
 209                 break;
 210         case SR_CONF_COUPLING:
 211                 if (!cg)
 212                         return SR_ERR_CHANNEL_GROUP;
 213                 if (cg_type != CG_ANALOG)
 214                         return SR_ERR_NA;
 215                 if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
 216                         return SR_ERR_ARG;
 217                 *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[idx].coupling]);
 218                 break;
 219         case SR_CONF_SAMPLERATE:
 220                 *data = g_variant_new_uint64(state->sample_rate);
 221                 break;
 222         case SR_CONF_LOGIC_THRESHOLD:
 223                 if (!cg)
 224                         return SR_ERR_CHANNEL_GROUP;
 225                 if (cg_type != CG_DIGITAL)
 226                         return SR_ERR_NA;
 227                 if (!model)
 228                         return SR_ERR_ARG;
 229                 if ((idx = std_cg_idx(cg, devc->digital_groups, model->digital_pods)) < 0)
 230                         return SR_ERR_ARG;
 231                 *data = g_variant_new_string((*model->logic_threshold)[state->digital_pods[idx].threshold]);
 232                 break;
 233         case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
 234                 if (!cg)
 235                         return SR_ERR_CHANNEL_GROUP;
 236                 if (cg_type != CG_DIGITAL)
 237                         return SR_ERR_NA;
 238                 if (!model)
 239                         return SR_ERR_ARG;
 240                 if ((idx = std_cg_idx(cg, devc->digital_groups, model->digital_pods)) < 0)
 241                         return SR_ERR_ARG;
 242                 /* Check if the oscilloscope is currently in custom threshold mode. */
 243                 for (i = 0; i < model->num_logic_threshold; i++) {
 244                         if (!strcmp("USER2", (*model->logic_threshold)[i]))
 245                                 if (strcmp("USER2", (*model->logic_threshold)[state->digital_pods[idx].threshold]))
 246                                         return SR_ERR_NA;
 247                         if (!strcmp("USER", (*model->logic_threshold)[i]))
 248                                 if (strcmp("USER", (*model->logic_threshold)[state->digital_pods[idx].threshold]))
 249                                         return SR_ERR_NA;
 250                         if (!strcmp("MAN", (*model->logic_threshold)[i]))
 251                                 if (strcmp("MAN", (*model->logic_threshold)[state->digital_pods[idx].threshold]))
 252                                         return SR_ERR_NA;
 253                 }
 254                 *data = g_variant_new_double(state->digital_pods[idx].user_threshold);
 255                 break;
 256         default:
 257                 return SR_ERR_NA;
 258         }
 259
 260         return SR_OK;
 261 }
 262
 263 static int config_set(uint32_t key, GVariant *data,
 264         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 265 {
 266         int ret, cg_type, idx, i, j;
 267         char command[MAX_COMMAND_SIZE], command2[MAX_COMMAND_SIZE];
 268         char float_str[30], *tmp_str;
 269         struct dev_context *devc;
 270         const struct scope_config *model;
 271         struct scope_state *state;
 272         double tmp_d, tmp_d2;
 273         gboolean update_sample_rate;
 274
 275         if (!sdi)
 276                 return SR_ERR_ARG;
 277
 278         devc = sdi->priv;
 279
 280         if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 281                 return SR_ERR;
 282
 283         model = devc->model_config;
 284         state = devc->model_state;
 285         update_sample_rate = FALSE;
 286
 287         switch (key) {
 288         case SR_CONF_LIMIT_SAMPLES:
 289                 devc->samples_limit = g_variant_get_uint64(data);
 290                 ret = SR_OK;
 291                 break;
 292         case SR_CONF_LIMIT_FRAMES:
 293                 devc->frame_limit = g_variant_get_uint64(data);
 294                 ret = SR_OK;
 295                 break;
 296         case SR_CONF_TRIGGER_SOURCE:
 297                 if ((idx = std_str_idx(data, *model->trigger_sources, model->num_trigger_sources)) < 0)
 298                         return SR_ERR_ARG;
 299                 g_snprintf(command, sizeof(command),
 300                            (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
 301                            (*model->trigger_sources)[idx]);
 302                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 303                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 304                         return SR_ERR;
 305                 state->trigger_source = idx;
 306                 ret = SR_OK;
 307                 break;
 308         case SR_CONF_VDIV:
 309                 if (!cg)
 310                         return SR_ERR_CHANNEL_GROUP;
 311                 if ((idx = std_u64_tuple_idx(data, *model->vdivs, model->num_vdivs)) < 0)
 312                         return SR_ERR_ARG;
 313                 if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
 314                         return SR_ERR_ARG;
 315                 g_ascii_formatd(float_str, sizeof(float_str), "%E",
 316                         (float) (*model->vdivs)[idx][0] / (*model->vdivs)[idx][1]);
 317                 g_snprintf(command, sizeof(command),
 318                            (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_SCALE],
 319                            j + 1, float_str);
 320                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 321                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 322                         return SR_ERR;
 323                 state->analog_channels[j].vdiv = idx;
 324                 ret = SR_OK;
 325                 break;
 326         case SR_CONF_TIMEBASE:
 327                 if ((idx = std_u64_tuple_idx(data, *model->timebases, model->num_timebases)) < 0)
 328                         return SR_ERR_ARG;
 329                 g_ascii_formatd(float_str, sizeof(float_str), "%E",
 330                         (float) (*model->timebases)[idx][0] / (*model->timebases)[idx][1]);
 331                 g_snprintf(command, sizeof(command),
 332                            (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
 333                            float_str);
 334                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 335                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 336                         return SR_ERR;
 337                 state->timebase = idx;
 338                 ret = SR_OK;
 339                 update_sample_rate = TRUE;
 340                 break;
 341         case SR_CONF_HORIZ_TRIGGERPOS:
 342                 tmp_d = g_variant_get_double(data);
 343                 if (tmp_d < 0.0 || tmp_d > 1.0)
 344                         return SR_ERR;
 345                 tmp_d2 = -(tmp_d - 0.5) *
 346                         ((double) (*model->timebases)[state->timebase][0] /
 347                         (*model->timebases)[state->timebase][1])
 348                          * model->num_xdivs;
 349                 g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d2);
 350                 g_snprintf(command, sizeof(command),
 351                            (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
 352                            float_str);
 353                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 354                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 355                         return SR_ERR;
 356                 state->horiz_triggerpos = tmp_d;
 357                 ret = SR_OK;
 358                 break;
 359         case SR_CONF_TRIGGER_SLOPE:
 360                 if ((idx = std_str_idx(data, *model->trigger_slopes, model->num_trigger_slopes)) < 0)
 361                         return SR_ERR_ARG;
 362                 g_snprintf(command, sizeof(command),
 363                            (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
 364                            (*model->trigger_slopes)[idx]);
 365                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 366                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 367                         return SR_ERR;
 368                 state->trigger_slope = idx;
 369                 ret = SR_OK;
 370                 break;
 371         case SR_CONF_TRIGGER_PATTERN:
 372                 tmp_str = (char *)g_variant_get_string(data, 0);
 373                 idx = strlen(tmp_str);
 374                 if (idx == 0 || idx > model->analog_channels + model->digital_channels)
 375                         return SR_ERR_ARG;
 376                 g_snprintf(command, sizeof(command),
 377                            (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_PATTERN],
 378                            tmp_str);
 379                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 380                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 381                         return SR_ERR;
 382                 strncpy(state->trigger_pattern,
 383                         tmp_str,
 384                         MAX_ANALOG_CHANNEL_COUNT + MAX_DIGITAL_CHANNEL_COUNT);
 385                 ret = SR_OK;
 386                 break;
 387         case SR_CONF_COUPLING:
 388                 if (!cg)
 389                         return SR_ERR_CHANNEL_GROUP;
 390                 if ((idx = std_str_idx(data, *model->coupling_options, model->num_coupling_options)) < 0)
 391                         return SR_ERR_ARG;
 392                 if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
 393                         return SR_ERR_ARG;
 394                 g_snprintf(command, sizeof(command),
 395                            (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING],
 396                            j + 1, (*model->coupling_options)[idx]);
 397                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 398                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 399                         return SR_ERR;
 400                 state->analog_channels[j].coupling = idx;
 401                 ret = SR_OK;
 402                 break;
 403         case SR_CONF_LOGIC_THRESHOLD:
 404                 if (!cg)
 405                         return SR_ERR_CHANNEL_GROUP;
 406                 if (cg_type != CG_DIGITAL)
 407                         return SR_ERR_NA;
 408                 if (!model)
 409                         return SR_ERR_ARG;
 410                 if ((idx = std_str_idx(data, *model->logic_threshold, model->num_logic_threshold)) < 0)
 411                         return SR_ERR_ARG;
 412                 if ((j = std_cg_idx(cg, devc->digital_groups, model->digital_pods)) < 0)
 413                         return SR_ERR_ARG;
 414                 /* Check if the threshold command is based on the POD or digital channel index. */
 415                 if (model->logic_threshold_for_pod)
 416                         i = j + 1;
 417                 else
 418                         i = j * 8;
 419                 g_snprintf(command, sizeof(command),
 420                            (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_THRESHOLD],
 421                            i, (*model->logic_threshold)[idx]);
 422                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 423                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 424                         return SR_ERR;
 425                 state->digital_pods[j].threshold = idx;
 426                 ret = SR_OK;
 427                 break;
 428         case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
 429                 if (!cg)
 430                         return SR_ERR_CHANNEL_GROUP;
 431                 if (cg_type != CG_DIGITAL)
 432                         return SR_ERR_NA;
 433                 if (!model)
 434                         return SR_ERR_ARG;
 435                 if ((j = std_cg_idx(cg, devc->digital_groups, model->digital_pods)) < 0)
 436                         return SR_ERR_ARG;
 437                 tmp_d = g_variant_get_double(data);
 438                 if (tmp_d < -2.0 || tmp_d > 8.0)
 439                         return SR_ERR;
 440                 g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
 441                 /* Check if the threshold command is based on the POD or digital channel index. */
 442                 if (model->logic_threshold_for_pod)
 443                         idx = j + 1;
 444                 else
 445                         idx = j * 8;
 446                 /* Try to support different dialects exhaustively. */
 447                 for (i = 0; i < model->num_logic_threshold; i++) {
 448                         if (!strcmp("USER2", (*model->logic_threshold)[i])) {
 449                                 g_snprintf(command, sizeof(command),
 450                                            (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_USER_THRESHOLD],
 451                                            idx, 2, float_str); /* USER2 */
 452                                 g_snprintf(command2, sizeof(command2),
 453                                            (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_THRESHOLD],
 454                                            idx, "USER2");
 455                                 break;
 456                         }
 457                         if (!strcmp("USER", (*model->logic_threshold)[i])) {
 458                                 g_snprintf(command, sizeof(command),
 459                                            (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_USER_THRESHOLD],
 460                                            idx, float_str);
 461                                 g_snprintf(command2, sizeof(command2),
 462                                            (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_THRESHOLD],
 463                                            idx, "USER");
 464                                 break;
 465                         }
 466                         if (!strcmp("MAN", (*model->logic_threshold)[i])) {
 467                                 g_snprintf(command, sizeof(command),
 468                                            (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_USER_THRESHOLD],
 469                                            idx, float_str);
 470                                 g_snprintf(command2, sizeof(command2),
 471                                            (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_THRESHOLD],
 472                                            idx, "MAN");
 473                                 break;
 474                         }
 475                 }
 476                 if (sr_scpi_send(sdi->conn, command) != SR_OK ||
 477                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 478                         return SR_ERR;
 479                 if (sr_scpi_send(sdi->conn, command2) != SR_OK ||
 480                     sr_scpi_get_opc(sdi->conn) != SR_OK)
 481                         return SR_ERR;
 482                 state->digital_pods[j].user_threshold = tmp_d;
 483                 ret = SR_OK;
 484                 break;
 485         default:
 486                 ret = SR_ERR_NA;
 487                 break;
 488         }
 489
 490         if (ret == SR_OK && update_sample_rate)
 491                 ret = hmo_update_sample_rate(sdi);
 492
 493         return ret;
 494 }
 495
 496 static int config_list(uint32_t key, GVariant **data,
 497         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 498 {
 499         int cg_type = CG_NONE;
 500         struct dev_context *devc = NULL;
 501         const struct scope_config *model = NULL;
 502
 503         if (sdi) {
 504                 devc = sdi->priv;
 505                 if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 506                         return SR_ERR;
 507
 508                 model = devc->model_config;
 509         }
 510
 511         switch (key) {
 512         case SR_CONF_SCAN_OPTIONS:
 513                 *data = std_gvar_array_u32(ARRAY_AND_SIZE(scanopts));
 514                 break;
 515         case SR_CONF_DEVICE_OPTIONS:
 516                 if (!cg) {
 517                         if (model)
 518                                 *data = std_gvar_array_u32(*model->devopts, model->num_devopts);
 519                         else
 520                                 *data = std_gvar_array_u32(ARRAY_AND_SIZE(drvopts));
 521                 } else if (cg_type == CG_ANALOG) {
 522                         *data = std_gvar_array_u32(*model->devopts_cg_analog, model->num_devopts_cg_analog);
 523                 } else if (cg_type == CG_DIGITAL) {
 524                         *data = std_gvar_array_u32(*model->devopts_cg_digital, model->num_devopts_cg_digital);
 525                 } else {
 526                         *data = std_gvar_array_u32(NULL, 0);
 527                 }
 528                 break;
 529         case SR_CONF_COUPLING:
 530                 if (!cg)
 531                         return SR_ERR_CHANNEL_GROUP;
 532                 if (!model)
 533                         return SR_ERR_ARG;
 534                 *data = g_variant_new_strv(*model->coupling_options, model->num_coupling_options);
 535                 break;
 536         case SR_CONF_TRIGGER_SOURCE:
 537                 if (!model)
 538                         return SR_ERR_ARG;
 539                 *data = g_variant_new_strv(*model->trigger_sources, model->num_trigger_sources);
 540                 break;
 541         case SR_CONF_TRIGGER_SLOPE:
 542                 if (!model)
 543                         return SR_ERR_ARG;
 544                 *data = g_variant_new_strv(*model->trigger_slopes, model->num_trigger_slopes);
 545                 break;
 546         case SR_CONF_TIMEBASE:
 547                 if (!model)
 548                         return SR_ERR_ARG;
 549                 *data = std_gvar_tuple_array(*model->timebases, model->num_timebases);
 550                 break;
 551         case SR_CONF_VDIV:
 552                 if (!cg)
 553                         return SR_ERR_CHANNEL_GROUP;
 554                 if (!model)
 555                         return SR_ERR_ARG;
 556                 *data = std_gvar_tuple_array(*model->vdivs, model->num_vdivs);
 557                 break;
 558         case SR_CONF_LOGIC_THRESHOLD:
 559                 if (!cg)
 560                         return SR_ERR_CHANNEL_GROUP;
 561                 if (!model)
 562                         return SR_ERR_ARG;
 563                 *data = g_variant_new_strv(*model->logic_threshold, model->num_logic_threshold);
 564                 break;
 565         default:
 566                 return SR_ERR_NA;
 567         }
 568
 569         return SR_OK;
 570 }
 571
 572 SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
 573 {
 574         char command[MAX_COMMAND_SIZE];
 575         struct sr_channel *ch;
 576         struct dev_context *devc;
 577         const struct scope_config *model;
 578
 579         devc = sdi->priv;
 580         model = devc->model_config;
 581
 582         ch = devc->current_channel->data;
 583
 584         switch (ch->type) {
 585         case SR_CHANNEL_ANALOG:
 586                 g_snprintf(command, sizeof(command),
 587                            (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA],
 588 #ifdef WORDS_BIGENDIAN
 589                            "MSBF",
 590 #else
 591                            "LSBF",
 592 #endif
 593                            ch->index + 1);
 594                 break;
 595         case SR_CHANNEL_LOGIC:
 596                 g_snprintf(command, sizeof(command),
 597                            (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA],
 598                            ch->index < 8 ? 1 : 2);
 599                 break;
 600         default:
 601                 sr_err("Invalid channel type.");
 602                 break;
 603         }
 604
 605         return sr_scpi_send(sdi->conn, command);
 606 }
 607
 608 static int hmo_check_channels(GSList *channels)
 609 {
 610         GSList *l;
 611         struct sr_channel *ch;
 612         gboolean enabled_chan[MAX_ANALOG_CHANNEL_COUNT];
 613         gboolean enabled_pod[MAX_DIGITAL_GROUP_COUNT];
 614         size_t idx;
 615
 616         /* Preset "not enabled" for all channels / pods. */
 617         for (idx = 0; idx < ARRAY_SIZE(enabled_chan); idx++)
 618                 enabled_chan[idx] = FALSE;
 619         for (idx = 0; idx < ARRAY_SIZE(enabled_pod); idx++)
 620                 enabled_pod[idx] = FALSE;
 621
 622         /*
 623          * Determine which channels / pods are required for the caller's
 624          * specified configuration.
 625          */
 626         for (l = channels; l; l = l->next) {
 627                 ch = l->data;
 628                 switch (ch->type) {
 629                 case SR_CHANNEL_ANALOG:
 630                         idx = ch->index;
 631                         if (idx < ARRAY_SIZE(enabled_chan))
 632                                 enabled_chan[idx] = TRUE;
 633                         break;
 634                 case SR_CHANNEL_LOGIC:
 635                         idx = ch->index / 8;
 636                         if (idx < ARRAY_SIZE(enabled_pod))
 637                                 enabled_pod[idx] = TRUE;
 638                         break;
 639                 default:
 640                         return SR_ERR;
 641                 }
 642         }
 643
 644         /*
 645          * Check for resource conflicts. Some channels can be either
 646          * analog or digital, but never both at the same time.
 647          *
 648          * Note that the constraints might depend on the specific model.
 649          * These tests might need some adjustment when support for more
 650          * models gets added to the driver.
 651          */
 652         if (enabled_pod[0] && enabled_chan[2])
 653                 return SR_ERR;
 654         if (enabled_pod[1] && enabled_chan[3])
 655                 return SR_ERR;
 656         return SR_OK;
 657 }
 658
 659 static int hmo_setup_channels(const struct sr_dev_inst *sdi)
 660 {
 661         GSList *l;
 662         unsigned int i;
 663         gboolean *pod_enabled, setup_changed;
 664         char command[MAX_COMMAND_SIZE];
 665         struct scope_state *state;
 666         const struct scope_config *model;
 667         struct sr_channel *ch;
 668         struct dev_context *devc;
 669         struct sr_scpi_dev_inst *scpi;
 670         int ret;
 671
 672         devc = sdi->priv;
 673         scpi = sdi->conn;
 674         state = devc->model_state;
 675         model = devc->model_config;
 676         setup_changed = FALSE;
 677
 678         pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods);
 679
 680         for (l = sdi->channels; l; l = l->next) {
 681                 ch = l->data;
 682                 switch (ch->type) {
 683                 case SR_CHANNEL_ANALOG:
 684                         if (ch->enabled == state->analog_channels[ch->index].state)
 685                                 break;
 686                         g_snprintf(command, sizeof(command),
 687                                    (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
 688                                    ch->index + 1, ch->enabled);
 689
 690                         if (sr_scpi_send(scpi, command) != SR_OK) {
 691                                 g_free(pod_enabled);
 692                                 return SR_ERR;
 693                         }
 694                         state->analog_channels[ch->index].state = ch->enabled;
 695                         setup_changed = TRUE;
 696                         break;
 697                 case SR_CHANNEL_LOGIC:
 698                         /*
 699                          * A digital POD needs to be enabled for every group of
 700                          * 8 channels.
 701                          */
 702                         if (ch->enabled)
 703                                 pod_enabled[ch->index < 8 ? 0 : 1] = TRUE;
 704
 705                         if (ch->enabled == state->digital_channels[ch->index])
 706                                 break;
 707                         g_snprintf(command, sizeof(command),
 708                                    (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
 709                                    ch->index, ch->enabled);
 710
 711                         if (sr_scpi_send(scpi, command) != SR_OK) {
 712                                 g_free(pod_enabled);
 713                                 return SR_ERR;
 714                         }
 715
 716                         state->digital_channels[ch->index] = ch->enabled;
 717                         setup_changed = TRUE;
 718                         break;
 719                 default:
 720                         g_free(pod_enabled);
 721                         return SR_ERR;
 722                 }
 723         }
 724
 725         ret = SR_OK;
 726         for (i = 0; i < model->digital_pods; i++) {
 727                 if (state->digital_pods[i].state == pod_enabled[i])
 728                         continue;
 729                 g_snprintf(command, sizeof(command),
 730                            (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE],
 731                            i + 1, pod_enabled[i]);
 732                 if (sr_scpi_send(scpi, command) != SR_OK) {
 733                         ret = SR_ERR;
 734                         break;
 735                 }
 736                 state->digital_pods[i].state = pod_enabled[i];
 737                 setup_changed = TRUE;
 738         }
 739         g_free(pod_enabled);
 740         if (ret != SR_OK)
 741                 return ret;
 742
 743         if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK)
 744                 return SR_ERR;
 745
 746         return SR_OK;
 747 }
 748
 749 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 750 {
 751         GSList *l;
 752         gboolean digital_added[MAX_DIGITAL_GROUP_COUNT];
 753         size_t group, pod_count;
 754         struct sr_channel *ch;
 755         struct dev_context *devc;
 756         struct sr_scpi_dev_inst *scpi;
 757         int ret;
 758
 759         scpi = sdi->conn;
 760         devc = sdi->priv;
 761
 762         devc->num_samples = 0;
 763         devc->num_frames = 0;
 764
 765         /* Preset empty results. */
 766         for (group = 0; group < ARRAY_SIZE(digital_added); group++)
 767                 digital_added[group] = FALSE;
 768         g_slist_free(devc->enabled_channels);
 769         devc->enabled_channels = NULL;
 770
 771         /*
 772          * Contruct the list of enabled channels. Determine the highest
 773          * number of digital pods involved in the acquisition.
 774          */
 775         pod_count = 0;
 776         for (l = sdi->channels; l; l = l->next) {
 777                 ch = l->data;
 778                 if (!ch->enabled)
 779                         continue;
 780                 /* Only add a single digital channel per group (pod). */
 781                 group = ch->index / 8;
 782                 if (ch->type != SR_CHANNEL_LOGIC || !digital_added[group]) {
 783                         devc->enabled_channels = g_slist_append(
 784                                         devc->enabled_channels, ch);
 785                         if (ch->type == SR_CHANNEL_LOGIC) {
 786                                 digital_added[group] = TRUE;
 787                                 if (pod_count < group + 1)
 788                                         pod_count = group + 1;
 789                         }
 790                 }
 791         }
 792         if (!devc->enabled_channels)
 793                 return SR_ERR;
 794         devc->pod_count = pod_count;
 795         devc->logic_data = NULL;
 796
 797         /*
 798          * Check constraints. Some channels can be either analog or
 799          * digital, but not both at the same time.
 800          */
 801         if (hmo_check_channels(devc->enabled_channels) != SR_OK) {
 802                 sr_err("Invalid channel configuration specified!");
 803                 ret = SR_ERR_NA;
 804                 goto free_enabled;
 805         }
 806
 807         /*
 808          * Configure the analog and digital channels and the
 809          * corresponding digital pods.
 810          */
 811         if (hmo_setup_channels(sdi) != SR_OK) {
 812                 sr_err("Failed to setup channel configuration!");
 813                 ret = SR_ERR;
 814                 goto free_enabled;
 815         }
 816
 817         /*
 818          * Start acquisition on the first enabled channel. The
 819          * receive routine will continue driving the acquisition.
 820          */
 821         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
 822                         hmo_receive_data, (void *)sdi);
 823
 824         std_session_send_df_header(sdi);
 825
 826         devc->current_channel = devc->enabled_channels;
 827
 828         return hmo_request_data(sdi);
 829
 830 free_enabled:
 831         g_slist_free(devc->enabled_channels);
 832         devc->enabled_channels = NULL;
 833         return ret;
 834 }
 835
 836 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 837 {
 838         struct dev_context *devc;
 839         struct sr_scpi_dev_inst *scpi;
 840
 841         std_session_send_df_end(sdi);
 842
 843         devc = sdi->priv;
 844
 845         devc->num_samples = 0;
 846         devc->num_frames = 0;
 847         g_slist_free(devc->enabled_channels);
 848         devc->enabled_channels = NULL;
 849         scpi = sdi->conn;
 850         sr_scpi_source_remove(sdi->session, scpi);
 851
 852         return SR_OK;
 853 }
 854
 855 static struct sr_dev_driver hameg_hmo_driver_info = {
 856         .name = "hameg-hmo",
 857         .longname = "Hameg HMO",
 858         .api_version = 1,
 859         .init = std_init,
 860         .cleanup = std_cleanup,
 861         .scan = scan,
 862         .dev_list = std_dev_list,
 863         .dev_clear = dev_clear,
 864         .config_get = config_get,
 865         .config_set = config_set,
 866         .config_list = config_list,
 867         .dev_open = dev_open,
 868         .dev_close = dev_close,
 869         .dev_acquisition_start = dev_acquisition_start,
 870         .dev_acquisition_stop = dev_acquisition_stop,
 871         .context = NULL,
 872 };
 873 SR_REGISTER_DEV_DRIVER(hameg_hmo_driver_info);