src/hardware/rigol-ds/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2012 Martin Ling <martin-git@earth.li>
   5  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   6  * Copyright (C) 2013 Mathias Grimmberger <mgri@zaphod.sax.de>
   7  *
   8  * This program is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include <config.h>
  23 #include <fcntl.h>
  24 #include <unistd.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <strings.h>
  28 #include <math.h>
  29 #include <glib.h>
  30 #include <libsigrok/libsigrok.h>
  31 #include "libsigrok-internal.h"
  32 #include "scpi.h"
  33 #include "protocol.h"
  34
  35 static const uint32_t scanopts[] = {
  36         SR_CONF_CONN,
  37         SR_CONF_SERIALCOMM,
  38 };
  39
  40 static const uint32_t drvopts[] = {
  41         SR_CONF_OSCILLOSCOPE,
  42 };
  43
  44 static const uint32_t devopts[] = {
  45         SR_CONF_LIMIT_FRAMES | SR_CONF_SET,
  46         SR_CONF_SAMPLERATE | SR_CONF_GET,
  47         SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  48         SR_CONF_NUM_HDIV | SR_CONF_GET,
  49         SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_SET,
  50         SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  51         SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  52         SR_CONF_TRIGGER_LEVEL | SR_CONF_GET | SR_CONF_SET,
  53         SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  54 };
  55
  56 static const uint32_t devopts_cg_analog[] = {
  57         SR_CONF_NUM_VDIV | SR_CONF_GET,
  58         SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  59         SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  60         SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  61 };
  62
  63 static const uint64_t timebases[][2] = {
  64         /* nanoseconds */
  65         { 1, 1000000000 },
  66         { 2, 1000000000 },
  67         { 5, 1000000000 },
  68         { 10, 1000000000 },
  69         { 20, 1000000000 },
  70         { 50, 1000000000 },
  71         { 100, 1000000000 },
  72         { 500, 1000000000 },
  73         /* microseconds */
  74         { 1, 1000000 },
  75         { 2, 1000000 },
  76         { 5, 1000000 },
  77         { 10, 1000000 },
  78         { 20, 1000000 },
  79         { 50, 1000000 },
  80         { 100, 1000000 },
  81         { 200, 1000000 },
  82         { 500, 1000000 },
  83         /* milliseconds */
  84         { 1, 1000 },
  85         { 2, 1000 },
  86         { 5, 1000 },
  87         { 10, 1000 },
  88         { 20, 1000 },
  89         { 50, 1000 },
  90         { 100, 1000 },
  91         { 200, 1000 },
  92         { 500, 1000 },
  93         /* seconds */
  94         { 1, 1 },
  95         { 2, 1 },
  96         { 5, 1 },
  97         { 10, 1 },
  98         { 20, 1 },
  99         { 50, 1 },
 100         { 100, 1 },
 101         { 200, 1 },
 102         { 500, 1 },
 103         { 1000, 1 },
 104 };
 105
 106 static const uint64_t vdivs[][2] = {
 107         /* microvolts */
 108         { 500, 1000000 },
 109         /* millivolts */
 110         { 1, 1000 },
 111         { 2, 1000 },
 112         { 5, 1000 },
 113         { 10, 1000 },
 114         { 20, 1000 },
 115         { 50, 1000 },
 116         { 100, 1000 },
 117         { 200, 1000 },
 118         { 500, 1000 },
 119         /* volts */
 120         { 1, 1 },
 121         { 2, 1 },
 122         { 5, 1 },
 123         { 10, 1 },
 124         { 20, 1 },
 125         { 50, 1 },
 126         { 100, 1 },
 127 };
 128
 129 static const char *trigger_sources_2_chans[] = {
 130         "CH1", "CH2",
 131         "EXT", "AC Line",
 132         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 133         "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 134 };
 135 static const char *trigger_sources_4_chans[] = {
 136         "CH1", "CH2", "CH3", "CH4",
 137         "EXT", "AC Line",
 138         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 139         "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 140 };
 141
 142 static const char *trigger_slopes[] = {
 143         "r", "f",
 144 };
 145
 146 static const char *coupling[] = {
 147         "AC", "DC", "GND",
 148 };
 149
 150 static const uint64_t probe_factor[] = {
 151         1, 2, 5, 10, 20, 50, 100, 200, 500, 1000,
 152 };
 153
 154 /* Do not change the order of entries */
 155 static const char *data_sources[] = {
 156         "Live",
 157         "Memory",
 158         "Segmented",
 159 };
 160
 161 enum vendor {
 162         RIGOL,
 163         AGILENT,
 164 };
 165
 166 enum series {
 167         VS5000,
 168         DS1000,
 169         DS2000,
 170         DS2000A,
 171         DSO1000,
 172         DS1000Z,
 173 };
 174
 175 /* short name, full name */
 176 static const struct rigol_ds_vendor supported_vendors[] = {
 177         [RIGOL] = {"Rigol", "Rigol Technologies"},
 178         [AGILENT] = {"Agilent", "Agilent Technologies"},
 179 };
 180
 181 #define VENDOR(x) &supported_vendors[x]
 182 /* vendor, series/name, protocol, data format, max timebase, min vdiv,
 183  * number of horizontal divs, live waveform samples, memory buffer samples */
 184 static const struct rigol_ds_series supported_series[] = {
 185         [VS5000] = {VENDOR(RIGOL), "VS5000", PROTOCOL_V1, FORMAT_RAW,
 186                 {50, 1}, {2, 1000}, 14, 2048, 0},
 187         [DS1000] = {VENDOR(RIGOL), "DS1000", PROTOCOL_V2, FORMAT_IEEE488_2,
 188                 {50, 1}, {2, 1000}, 12, 600, 1048576},
 189         [DS2000] = {VENDOR(RIGOL), "DS2000", PROTOCOL_V3, FORMAT_IEEE488_2,
 190                 {500, 1}, {500, 1000000}, 14, 1400, 14000},
 191         [DS2000A] = {VENDOR(RIGOL), "DS2000A", PROTOCOL_V3, FORMAT_IEEE488_2,
 192                 {1000, 1}, {500, 1000000}, 14, 1400, 14000},
 193         [DSO1000] = {VENDOR(AGILENT), "DSO1000", PROTOCOL_V3, FORMAT_IEEE488_2,
 194                 {50, 1}, {2, 1000}, 12, 600, 20480},
 195         [DS1000Z] = {VENDOR(RIGOL), "DS1000Z", PROTOCOL_V4, FORMAT_IEEE488_2,
 196                 {50, 1}, {1, 1000}, 12, 1200, 12000000},
 197 };
 198
 199 #define SERIES(x) &supported_series[x]
 200 #define CHANINFO(num, digital) num, digital, trigger_sources_##num##_chans, digital ? ARRAY_SIZE(trigger_sources_##num##_chans) : (num + 2)
 201 /* series, model, min timebase, analog channels, digital */
 202 static const struct rigol_ds_model supported_models[] = {
 203         {SERIES(VS5000), "VS5022", {20, 1000000000}, CHANINFO(2, false)},
 204         {SERIES(VS5000), "VS5042", {10, 1000000000}, CHANINFO(2, false)},
 205         {SERIES(VS5000), "VS5062", {5, 1000000000}, CHANINFO(2, false)},
 206         {SERIES(VS5000), "VS5102", {2, 1000000000}, CHANINFO(2, false)},
 207         {SERIES(VS5000), "VS5202", {2, 1000000000}, CHANINFO(2, false)},
 208         {SERIES(VS5000), "VS5022D", {20, 1000000000}, CHANINFO(2, true)},
 209         {SERIES(VS5000), "VS5042D", {10, 1000000000}, CHANINFO(2, true)},
 210         {SERIES(VS5000), "VS5062D", {5, 1000000000}, CHANINFO(2, true)},
 211         {SERIES(VS5000), "VS5102D", {2, 1000000000}, CHANINFO(2, true)},
 212         {SERIES(VS5000), "VS5202D", {2, 1000000000}, CHANINFO(2, true)},
 213         {SERIES(DS1000), "DS1052E", {5, 1000000000}, CHANINFO(2, false)},
 214         {SERIES(DS1000), "DS1102E", {2, 1000000000}, CHANINFO(2, false)},
 215         {SERIES(DS1000), "DS1152E", {2, 1000000000}, CHANINFO(2, false)},
 216         {SERIES(DS1000), "DS1052D", {5, 1000000000}, CHANINFO(2, true)},
 217         {SERIES(DS1000), "DS1102D", {2, 1000000000}, CHANINFO(2, true)},
 218         {SERIES(DS1000), "DS1152D", {2, 1000000000}, CHANINFO(2, true)},
 219         {SERIES(DS2000), "DS2072", {5, 1000000000}, CHANINFO(2, false)},
 220         {SERIES(DS2000), "DS2102", {5, 1000000000}, CHANINFO(2, false)},
 221         {SERIES(DS2000), "DS2202", {2, 1000000000}, CHANINFO(2, false)},
 222         {SERIES(DS2000), "DS2302", {1, 1000000000}, CHANINFO(2, false)},
 223         {SERIES(DS2000A), "DS2072A", {5, 1000000000}, CHANINFO(2, false)},
 224         {SERIES(DS2000A), "DS2102A", {5, 1000000000}, CHANINFO(2, false)},
 225         {SERIES(DS2000A), "DS2202A", {2, 1000000000}, CHANINFO(2, false)},
 226         {SERIES(DS2000A), "DS2302A", {1, 1000000000}, CHANINFO(2, false)},
 227         {SERIES(DS2000A), "MSO2072A", {5, 1000000000}, CHANINFO(2, true)},
 228         {SERIES(DS2000A), "MSO2102A", {5, 1000000000}, CHANINFO(2, true)},
 229         {SERIES(DS2000A), "MSO2202A", {2, 1000000000}, CHANINFO(2, true)},
 230         {SERIES(DS2000A), "MSO2302A", {1, 1000000000}, CHANINFO(2, true)},
 231         {SERIES(DSO1000), "DSO1002A", {5, 1000000000}, CHANINFO(2, false)},
 232         {SERIES(DSO1000), "DSO1004A", {5, 1000000000}, CHANINFO(4, false)},
 233         {SERIES(DSO1000), "DSO1012A", {2, 1000000000}, CHANINFO(2, false)},
 234         {SERIES(DSO1000), "DSO1014A", {2, 1000000000}, CHANINFO(4, false)},
 235         {SERIES(DSO1000), "DSO1022A", {2, 1000000000}, CHANINFO(2, false)},
 236         {SERIES(DSO1000), "DSO1024A", {2, 1000000000}, CHANINFO(4, false)},
 237         {SERIES(DS1000Z), "DS1054Z", {5, 1000000000}, CHANINFO(4, false)},
 238         {SERIES(DS1000Z), "DS1074Z", {5, 1000000000}, CHANINFO(4, false)},
 239         {SERIES(DS1000Z), "DS1104Z", {5, 1000000000}, CHANINFO(4, false)},
 240         {SERIES(DS1000Z), "DS1074Z-S", {5, 1000000000}, CHANINFO(4, false)},
 241         {SERIES(DS1000Z), "DS1104Z-S", {5, 1000000000}, CHANINFO(4, false)},
 242         {SERIES(DS1000Z), "DS1074Z Plus", {5, 1000000000}, CHANINFO(4, false)},
 243         {SERIES(DS1000Z), "DS1104Z Plus", {5, 1000000000}, CHANINFO(4, false)},
 244         {SERIES(DS1000Z), "MSO1074Z", {5, 1000000000}, CHANINFO(4, true)},
 245         {SERIES(DS1000Z), "MSO1104Z", {5, 1000000000}, CHANINFO(4, true)},
 246         {SERIES(DS1000Z), "MSO1074Z-S", {5, 1000000000}, CHANINFO(4, true)},
 247         {SERIES(DS1000Z), "MSO1104Z-S", {5, 1000000000}, CHANINFO(4, true)},
 248 };
 249
 250 static struct sr_dev_driver rigol_ds_driver_info;
 251
 252 static void clear_helper(struct dev_context *devc)
 253 {
 254         unsigned int i;
 255
 256         g_free(devc->data);
 257         g_free(devc->buffer);
 258         for (i = 0; i < ARRAY_SIZE(devc->coupling); i++)
 259                 g_free(devc->coupling[i]);
 260         g_free(devc->trigger_source);
 261         g_free(devc->trigger_slope);
 262         g_free(devc->analog_groups);
 263 }
 264
 265 static int dev_clear(const struct sr_dev_driver *di)
 266 {
 267         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 268 }
 269
 270 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
 271 {
 272         struct dev_context *devc;
 273         struct sr_dev_inst *sdi;
 274         struct sr_scpi_hw_info *hw_info;
 275         struct sr_channel *ch;
 276         long n[3];
 277         unsigned int i;
 278         const struct rigol_ds_model *model = NULL;
 279         gchar *channel_name, **version;
 280
 281         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
 282                 sr_info("Couldn't get IDN response, retrying.");
 283                 sr_scpi_close(scpi);
 284                 sr_scpi_open(scpi);
 285                 if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
 286                         sr_info("Couldn't get IDN response.");
 287                         return NULL;
 288                 }
 289         }
 290
 291         for (i = 0; i < ARRAY_SIZE(supported_models); i++) {
 292                 if (!g_ascii_strcasecmp(hw_info->manufacturer,
 293                                         supported_models[i].series->vendor->full_name) &&
 294                                 !strcmp(hw_info->model, supported_models[i].name)) {
 295                         model = &supported_models[i];
 296                         break;
 297                 }
 298         }
 299
 300         if (!model) {
 301                 sr_scpi_hw_info_free(hw_info);
 302                 return NULL;
 303         }
 304
 305         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 306         sdi->vendor = g_strdup(model->series->vendor->name);
 307         sdi->model = g_strdup(model->name);
 308         sdi->version = g_strdup(hw_info->firmware_version);
 309         sdi->conn = scpi;
 310         sdi->driver = &rigol_ds_driver_info;
 311         sdi->inst_type = SR_INST_SCPI;
 312         sdi->serial_num = g_strdup(hw_info->serial_number);
 313         devc = g_malloc0(sizeof(struct dev_context));
 314         devc->limit_frames = 0;
 315         devc->model = model;
 316         devc->format = model->series->format;
 317
 318         /* DS1000 models with firmware before 0.2.4 used the old data format. */
 319         if (model->series == SERIES(DS1000)) {
 320                 version = g_strsplit(hw_info->firmware_version, ".", 0);
 321                 do {
 322                         if (!version[0] || !version[1] || !version[2])
 323                                 break;
 324                         if (version[0][0] == 0 || version[1][0] == 0 || version[2][0] == 0)
 325                                 break;
 326                         for (i = 0; i < 3; i++) {
 327                                 if (sr_atol(version[i], &n[i]) != SR_OK)
 328                                         break;
 329                         }
 330                         if (i != 3)
 331                                 break;
 332                         scpi->firmware_version = n[0] * 100 + n[1] * 10 + n[2];
 333                         if (scpi->firmware_version < 24) {
 334                                 sr_dbg("Found DS1000 firmware < 0.2.4, using raw data format.");
 335                                 devc->format = FORMAT_RAW;
 336                         }
 337                         break;
 338                 } while (0);
 339                 g_strfreev(version);
 340         }
 341
 342         sr_scpi_hw_info_free(hw_info);
 343
 344         devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) *
 345                                         model->analog_channels);
 346
 347         for (i = 0; i < model->analog_channels; i++) {
 348                 channel_name = g_strdup_printf("CH%d", i + 1);
 349                 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_name);
 350
 351                 devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
 352
 353                 devc->analog_groups[i]->name = channel_name;
 354                 devc->analog_groups[i]->channels = g_slist_append(NULL, ch);
 355                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
 356                                 devc->analog_groups[i]);
 357         }
 358
 359         if (devc->model->has_digital) {
 360                 devc->digital_group = g_malloc0(sizeof(struct sr_channel_group));
 361
 362                 for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
 363                         channel_name = g_strdup_printf("D%d", i);
 364                         ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
 365                         g_free(channel_name);
 366                         devc->digital_group->channels = g_slist_append(
 367                                         devc->digital_group->channels, ch);
 368                 }
 369                 devc->digital_group->name = g_strdup("LA");
 370                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
 371                                 devc->digital_group);
 372         }
 373
 374         for (i = 0; i < ARRAY_SIZE(timebases); i++) {
 375                 if (!memcmp(&devc->model->min_timebase, &timebases[i], sizeof(uint64_t[2])))
 376                         devc->timebases = &timebases[i];
 377                 if (!memcmp(&devc->model->series->max_timebase, &timebases[i], sizeof(uint64_t[2])))
 378                         devc->num_timebases = &timebases[i] - devc->timebases + 1;
 379         }
 380
 381         for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
 382                 if (!memcmp(&devc->model->series->min_vdiv,
 383                                         &vdivs[i], sizeof(uint64_t[2]))) {
 384                         devc->vdivs = &vdivs[i];
 385                         devc->num_vdivs = ARRAY_SIZE(vdivs) - i;
 386                 }
 387         }
 388
 389         devc->buffer = g_malloc(ACQ_BUFFER_SIZE);
 390         devc->data = g_malloc(ACQ_BUFFER_SIZE * sizeof(float));
 391
 392         devc->data_source = DATA_SOURCE_LIVE;
 393
 394         sdi->priv = devc;
 395
 396         return sdi;
 397 }
 398
 399 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 400 {
 401         return sr_scpi_scan(di->context, options, probe_device);
 402 }
 403
 404 static int dev_open(struct sr_dev_inst *sdi)
 405 {
 406         int ret;
 407         struct sr_scpi_dev_inst *scpi = sdi->conn;
 408
 409         if ((ret = sr_scpi_open(scpi)) < 0) {
 410                 sr_err("Failed to open SCPI device: %s.", sr_strerror(ret));
 411                 return SR_ERR;
 412         }
 413
 414         if ((ret = rigol_ds_get_dev_cfg(sdi)) < 0) {
 415                 sr_err("Failed to get device config: %s.", sr_strerror(ret));
 416                 return SR_ERR;
 417         }
 418
 419         return SR_OK;
 420 }
 421
 422 static int dev_close(struct sr_dev_inst *sdi)
 423 {
 424         struct sr_scpi_dev_inst *scpi;
 425         struct dev_context *devc;
 426
 427         scpi = sdi->conn;
 428         devc = sdi->priv;
 429
 430         if (!scpi)
 431                 return SR_ERR_BUG;
 432
 433         if (devc->model->series->protocol == PROTOCOL_V2)
 434                 rigol_ds_config_set(sdi, ":KEY:LOCK DISABLE");
 435
 436         return sr_scpi_close(scpi);
 437 }
 438
 439 static int analog_frame_size(const struct sr_dev_inst *sdi)
 440 {
 441         struct dev_context *devc = sdi->priv;
 442         struct sr_channel *ch;
 443         int analog_channels = 0;
 444         GSList *l;
 445
 446         for (l = sdi->channels; l; l = l->next) {
 447                 ch = l->data;
 448                 if (ch->type == SR_CHANNEL_ANALOG && ch->enabled)
 449                         analog_channels++;
 450         }
 451
 452         if (analog_channels == 0)
 453                 return 0;
 454
 455         switch (devc->data_source) {
 456         case DATA_SOURCE_LIVE:
 457                 return devc->model->series->live_samples;
 458         case DATA_SOURCE_MEMORY:
 459                 return devc->model->series->buffer_samples / analog_channels;
 460         default:
 461                 return 0;
 462         }
 463 }
 464
 465 static int digital_frame_size(const struct sr_dev_inst *sdi)
 466 {
 467         struct dev_context *devc = sdi->priv;
 468
 469         switch (devc->data_source) {
 470         case DATA_SOURCE_LIVE:
 471                 return devc->model->series->live_samples * 2;
 472         case DATA_SOURCE_MEMORY:
 473                 return devc->model->series->buffer_samples * 2;
 474         default:
 475                 return 0;
 476         }
 477 }
 478
 479 static int config_get(uint32_t key, GVariant **data,
 480         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 481 {
 482         struct dev_context *devc;
 483         struct sr_channel *ch;
 484         const char *tmp_str;
 485         uint64_t samplerate;
 486         int analog_channel = -1;
 487         float smallest_diff = INFINITY;
 488         int idx = -1;
 489         unsigned i;
 490
 491         if (!sdi)
 492                 return SR_ERR_ARG;
 493
 494         devc = sdi->priv;
 495
 496         /* If a channel group is specified, it must be a valid one. */
 497         if (cg && !g_slist_find(sdi->channel_groups, cg)) {
 498                 sr_err("Invalid channel group specified.");
 499                 return SR_ERR;
 500         }
 501
 502         if (cg) {
 503                 ch = g_slist_nth_data(cg->channels, 0);
 504                 if (!ch)
 505                         return SR_ERR;
 506                 if (ch->type == SR_CHANNEL_ANALOG) {
 507                         if (ch->name[2] < '1' || ch->name[2] > '4')
 508                                 return SR_ERR;
 509                         analog_channel = ch->name[2] - '1';
 510                 }
 511         }
 512
 513         switch (key) {
 514         case SR_CONF_NUM_HDIV:
 515                 *data = g_variant_new_int32(devc->model->series->num_horizontal_divs);
 516                 break;
 517         case SR_CONF_NUM_VDIV:
 518                 *data = g_variant_new_int32(devc->num_vdivs);
 519                 break;
 520         case SR_CONF_DATA_SOURCE:
 521                 if (devc->data_source == DATA_SOURCE_LIVE)
 522                         *data = g_variant_new_string("Live");
 523                 else if (devc->data_source == DATA_SOURCE_MEMORY)
 524                         *data = g_variant_new_string("Memory");
 525                 else
 526                         *data = g_variant_new_string("Segmented");
 527                 break;
 528         case SR_CONF_SAMPLERATE:
 529                 if (devc->data_source == DATA_SOURCE_LIVE) {
 530                         samplerate = analog_frame_size(sdi) /
 531                                 (devc->timebase * devc->model->series->num_horizontal_divs);
 532                         *data = g_variant_new_uint64(samplerate);
 533                 } else {
 534                         sr_dbg("Unknown data source: %d.", devc->data_source);
 535                         return SR_ERR_NA;
 536                 }
 537                 break;
 538         case SR_CONF_TRIGGER_SOURCE:
 539                 if (!strcmp(devc->trigger_source, "ACL"))
 540                         tmp_str = "AC Line";
 541                 else if (!strcmp(devc->trigger_source, "CHAN1"))
 542                         tmp_str = "CH1";
 543                 else if (!strcmp(devc->trigger_source, "CHAN2"))
 544                         tmp_str = "CH2";
 545                 else if (!strcmp(devc->trigger_source, "CHAN3"))
 546                         tmp_str = "CH3";
 547                 else if (!strcmp(devc->trigger_source, "CHAN4"))
 548                         tmp_str = "CH4";
 549                 else
 550                         tmp_str = devc->trigger_source;
 551                 *data = g_variant_new_string(tmp_str);
 552                 break;
 553         case SR_CONF_TRIGGER_SLOPE:
 554                 if (!strncmp(devc->trigger_slope, "POS", 3)) {
 555                         tmp_str = "r";
 556                 } else if (!strncmp(devc->trigger_slope, "NEG", 3)) {
 557                         tmp_str = "f";
 558                 } else {
 559                         sr_dbg("Unknown trigger slope: '%s'.", devc->trigger_slope);
 560                         return SR_ERR_NA;
 561                 }
 562                 *data = g_variant_new_string(tmp_str);
 563                 break;
 564         case SR_CONF_TRIGGER_LEVEL:
 565                 *data = g_variant_new_double(devc->trigger_level);
 566                 break;
 567         case SR_CONF_TIMEBASE:
 568                 for (i = 0; i < devc->num_timebases; i++) {
 569                         float tb = (float)devc->timebases[i][0] / devc->timebases[i][1];
 570                         float diff = fabs(devc->timebase - tb);
 571                         if (diff < smallest_diff) {
 572                                 smallest_diff = diff;
 573                                 idx = i;
 574                         }
 575                 }
 576                 if (idx < 0) {
 577                         sr_dbg("Negative timebase index: %d.", idx);
 578                         return SR_ERR_NA;
 579                 }
 580                 *data = g_variant_new("(tt)", devc->timebases[idx][0],
 581                                               devc->timebases[idx][1]);
 582                 break;
 583         case SR_CONF_VDIV:
 584                 if (analog_channel < 0) {
 585                         sr_dbg("Negative analog channel: %d.", analog_channel);
 586                         return SR_ERR_NA;
 587                 }
 588                 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
 589                         float vdiv = (float)vdivs[i][0] / vdivs[i][1];
 590                         float diff = fabs(devc->vdiv[analog_channel] - vdiv);
 591                         if (diff < smallest_diff) {
 592                                 smallest_diff = diff;
 593                                 idx = i;
 594                         }
 595                 }
 596                 if (idx < 0) {
 597                         sr_dbg("Negative vdiv index: %d.", idx);
 598                         return SR_ERR_NA;
 599                 }
 600                 *data = g_variant_new("(tt)", vdivs[idx][0], vdivs[idx][1]);
 601                 break;
 602         case SR_CONF_COUPLING:
 603                 if (analog_channel < 0) {
 604                         sr_dbg("Negative analog channel: %d.", analog_channel);
 605                         return SR_ERR_NA;
 606                 }
 607                 *data = g_variant_new_string(devc->coupling[analog_channel]);
 608                 break;
 609         case SR_CONF_PROBE_FACTOR:
 610                 if (analog_channel < 0) {
 611                         sr_dbg("Negative analog channel: %d.", analog_channel);
 612                         return SR_ERR_NA;
 613                 }
 614                 *data = g_variant_new_uint64(devc->attenuation[analog_channel]);
 615                 break;
 616         default:
 617                 return SR_ERR_NA;
 618         }
 619
 620         return SR_OK;
 621 }
 622
 623 static int config_set(uint32_t key, GVariant *data,
 624         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 625 {
 626         struct dev_context *devc;
 627         uint64_t p;
 628         double t_dbl;
 629         int ret, idx, i;
 630         const char *tmp_str;
 631         char buffer[16];
 632
 633         devc = sdi->priv;
 634
 635         /* If a channel group is specified, it must be a valid one. */
 636         if (cg && !g_slist_find(sdi->channel_groups, cg)) {
 637                 sr_err("Invalid channel group specified.");
 638                 return SR_ERR;
 639         }
 640
 641         switch (key) {
 642         case SR_CONF_LIMIT_FRAMES:
 643                 devc->limit_frames = g_variant_get_uint64(data);
 644                 break;
 645         case SR_CONF_TRIGGER_SLOPE:
 646                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0)
 647                         return SR_ERR_ARG;
 648                 g_free(devc->trigger_slope);
 649                 devc->trigger_slope = g_strdup((trigger_slopes[idx][0] == 'r') ? "POS" : "NEG");
 650                 return rigol_ds_config_set(sdi, ":TRIG:EDGE:SLOP %s", devc->trigger_slope);
 651         case SR_CONF_HORIZ_TRIGGERPOS:
 652                 t_dbl = g_variant_get_double(data);
 653                 if (t_dbl < 0.0 || t_dbl > 1.0) {
 654                         sr_err("Invalid horiz. trigger position: %g.", t_dbl);
 655                         return SR_ERR;
 656                 }
 657                 devc->horiz_triggerpos = t_dbl;
 658                 /* We have the trigger offset as a percentage of the frame, but
 659                  * need to express this in seconds. */
 660                 t_dbl = -(devc->horiz_triggerpos - 0.5) * devc->timebase * devc->num_timebases;
 661                 g_ascii_formatd(buffer, sizeof(buffer), "%.6f", t_dbl);
 662                 return rigol_ds_config_set(sdi, ":TIM:OFFS %s", buffer);
 663         case SR_CONF_TRIGGER_LEVEL:
 664                 t_dbl = g_variant_get_double(data);
 665                 g_ascii_formatd(buffer, sizeof(buffer), "%.3f", t_dbl);
 666                 ret = rigol_ds_config_set(sdi, ":TRIG:EDGE:LEV %s", buffer);
 667                 if (ret == SR_OK)
 668                         devc->trigger_level = t_dbl;
 669                 return ret;
 670         case SR_CONF_TIMEBASE:
 671                 if ((idx = std_u64_tuple_idx(data, devc->timebases, devc->num_timebases)) < 0)
 672                         return SR_ERR_ARG;
 673                 devc->timebase = (float)devc->timebases[idx][0] / devc->timebases[idx][1];
 674                 g_ascii_formatd(buffer, sizeof(buffer), "%.9f",
 675                                 devc->timebase);
 676                 return rigol_ds_config_set(sdi, ":TIM:SCAL %s", buffer);
 677         case SR_CONF_TRIGGER_SOURCE:
 678                 if ((idx = std_str_idx(data, devc->model->trigger_sources, devc->model->num_trigger_sources)) < 0)
 679                         return SR_ERR_ARG;
 680                 g_free(devc->trigger_source);
 681                 devc->trigger_source = g_strdup(devc->model->trigger_sources[idx]);
 682                 if (!strcmp(devc->trigger_source, "AC Line"))
 683                         tmp_str = "ACL";
 684                 else if (!strcmp(devc->trigger_source, "CH1"))
 685                         tmp_str = "CHAN1";
 686                 else if (!strcmp(devc->trigger_source, "CH2"))
 687                         tmp_str = "CHAN2";
 688                 else if (!strcmp(devc->trigger_source, "CH3"))
 689                         tmp_str = "CHAN3";
 690                 else if (!strcmp(devc->trigger_source, "CH4"))
 691                         tmp_str = "CHAN4";
 692                 else
 693                         tmp_str = (char *)devc->trigger_source;
 694                 return rigol_ds_config_set(sdi, ":TRIG:EDGE:SOUR %s", tmp_str);
 695         case SR_CONF_VDIV:
 696                 if (!cg)
 697                         return SR_ERR_CHANNEL_GROUP;
 698                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 699                         return SR_ERR_ARG;
 700                 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
 701                         return SR_ERR_ARG;
 702                 devc->vdiv[i] = (float)vdivs[idx][0] / vdivs[idx][1];
 703                 g_ascii_formatd(buffer, sizeof(buffer), "%.3f", devc->vdiv[i]);
 704                 return rigol_ds_config_set(sdi, ":CHAN%d:SCAL %s", i + 1, buffer);
 705         case SR_CONF_COUPLING:
 706                 if (!cg)
 707                         return SR_ERR_CHANNEL_GROUP;
 708                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 709                         return SR_ERR_ARG;
 710                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
 711                         return SR_ERR_ARG;
 712                 g_free(devc->coupling[i]);
 713                 devc->coupling[i] = g_strdup(coupling[idx]);
 714                 return rigol_ds_config_set(sdi, ":CHAN%d:COUP %s", i + 1, devc->coupling[i]);
 715         case SR_CONF_PROBE_FACTOR:
 716                 if (!cg)
 717                         return SR_ERR_CHANNEL_GROUP;
 718                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 719                         return SR_ERR_ARG;
 720                 if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(probe_factor))) < 0)
 721                         return SR_ERR_ARG;
 722                 p = g_variant_get_uint64(data);
 723                 devc->attenuation[i] = probe_factor[idx];
 724                 ret = rigol_ds_config_set(sdi, ":CHAN%d:PROB %"PRIu64, i + 1, p);
 725                 if (ret == SR_OK)
 726                         rigol_ds_get_dev_cfg_vertical(sdi);
 727                 return ret;
 728         case SR_CONF_DATA_SOURCE:
 729                 tmp_str = g_variant_get_string(data, NULL);
 730                 if (!strcmp(tmp_str, "Live"))
 731                         devc->data_source = DATA_SOURCE_LIVE;
 732                 else if (devc->model->series->protocol >= PROTOCOL_V2
 733                         && !strcmp(tmp_str, "Memory"))
 734                         devc->data_source = DATA_SOURCE_MEMORY;
 735                 else if (devc->model->series->protocol >= PROTOCOL_V3
 736                          && !strcmp(tmp_str, "Segmented"))
 737                         devc->data_source = DATA_SOURCE_SEGMENTED;
 738                 else {
 739                         sr_err("Unknown data source: '%s'.", tmp_str);
 740                         return SR_ERR;
 741                 }
 742                 break;
 743         default:
 744                 return SR_ERR_NA;
 745         }
 746
 747         return SR_OK;
 748 }
 749
 750 static int config_list(uint32_t key, GVariant **data,
 751         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 752 {
 753         struct dev_context *devc;
 754
 755         devc = (sdi) ? sdi->priv : NULL;
 756
 757         switch (key) {
 758         case SR_CONF_SCAN_OPTIONS:
 759         case SR_CONF_DEVICE_OPTIONS:
 760                 if (!cg)
 761                         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 762                 if (!devc)
 763                         return SR_ERR_ARG;
 764                 if (cg == devc->digital_group) {
 765                         *data = std_gvar_array_u32(NULL, 0);
 766                         return SR_OK;
 767                 } else {
 768                         if (std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels) < 0)
 769                                 return SR_ERR_ARG;
 770                         *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog));
 771                         return SR_OK;
 772                 }
 773                 break;
 774         case SR_CONF_COUPLING:
 775                 if (!cg)
 776                         return SR_ERR_CHANNEL_GROUP;
 777                 *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling));
 778                 break;
 779         case SR_CONF_PROBE_FACTOR:
 780                 if (!cg)
 781                         return SR_ERR_CHANNEL_GROUP;
 782                 *data = std_gvar_array_u64(ARRAY_AND_SIZE(probe_factor));
 783                 break;
 784         case SR_CONF_VDIV:
 785                 if (!devc)
 786                         /* Can't know this until we have the exact model. */
 787                         return SR_ERR_ARG;
 788                 if (!cg)
 789                         return SR_ERR_CHANNEL_GROUP;
 790                 *data = std_gvar_tuple_array(devc->vdivs, devc->num_vdivs);
 791                 break;
 792         case SR_CONF_TIMEBASE:
 793                 if (!devc)
 794                         /* Can't know this until we have the exact model. */
 795                         return SR_ERR_ARG;
 796                 if (devc->num_timebases <= 0)
 797                         return SR_ERR_NA;
 798                 *data = std_gvar_tuple_array(devc->timebases, devc->num_timebases);
 799                 break;
 800         case SR_CONF_TRIGGER_SOURCE:
 801                 if (!devc)
 802                         /* Can't know this until we have the exact model. */
 803                         return SR_ERR_ARG;
 804                 *data = g_variant_new_strv(devc->model->trigger_sources, devc->model->num_trigger_sources);
 805                 break;
 806         case SR_CONF_TRIGGER_SLOPE:
 807                 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
 808                 break;
 809         case SR_CONF_DATA_SOURCE:
 810                 if (!devc)
 811                         /* Can't know this until we have the exact model. */
 812                         return SR_ERR_ARG;
 813                 switch (devc->model->series->protocol) {
 814                 case PROTOCOL_V1:
 815                         *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources) - 2);
 816                         break;
 817                 case PROTOCOL_V2:
 818                         *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources) - 1);
 819                         break;
 820                 default:
 821                         *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
 822                         break;
 823                 }
 824                 break;
 825         default:
 826                 return SR_ERR_NA;
 827         }
 828
 829         return SR_OK;
 830 }
 831
 832 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 833 {
 834         struct sr_scpi_dev_inst *scpi;
 835         struct dev_context *devc;
 836         struct sr_channel *ch;
 837         struct sr_datafeed_packet packet;
 838         gboolean some_digital;
 839         GSList *l;
 840
 841         scpi = sdi->conn;
 842         devc = sdi->priv;
 843
 844         devc->num_frames = 0;
 845
 846         some_digital = FALSE;
 847         for (l = sdi->channels; l; l = l->next) {
 848                 ch = l->data;
 849                 sr_dbg("handling channel %s", ch->name);
 850                 if (ch->type == SR_CHANNEL_ANALOG) {
 851                         if (ch->enabled)
 852                                 devc->enabled_channels = g_slist_append(
 853                                                 devc->enabled_channels, ch);
 854                         if (ch->enabled != devc->analog_channels[ch->index]) {
 855                                 /* Enabled channel is currently disabled, or vice versa. */
 856                                 if (rigol_ds_config_set(sdi, ":CHAN%d:DISP %s", ch->index + 1,
 857                                                 ch->enabled ? "ON" : "OFF") != SR_OK)
 858                                         return SR_ERR;
 859                                 devc->analog_channels[ch->index] = ch->enabled;
 860                         }
 861                 } else if (ch->type == SR_CHANNEL_LOGIC) {
 862                         /* Only one list entry for older protocols. All channels are
 863                          * retrieved together when this entry is processed. */
 864                         if (ch->enabled && (
 865                                                 devc->model->series->protocol > PROTOCOL_V3 ||
 866                                                 !some_digital))
 867                                 devc->enabled_channels = g_slist_append(
 868                                                 devc->enabled_channels, ch);
 869                         if (ch->enabled) {
 870                                 some_digital = TRUE;
 871                                 /* Turn on LA module if currently off. */
 872                                 if (!devc->la_enabled) {
 873                                         if (rigol_ds_config_set(sdi,
 874                                                         devc->model->series->protocol >= PROTOCOL_V3 ?
 875                                                                 ":LA:STAT ON" : ":LA:DISP ON") != SR_OK)
 876                                                 return SR_ERR;
 877                                         devc->la_enabled = TRUE;
 878                                 }
 879                         }
 880                         if (ch->enabled != devc->digital_channels[ch->index]) {
 881                                 /* Enabled channel is currently disabled, or vice versa. */
 882                                 if (rigol_ds_config_set(sdi,
 883                                                 devc->model->series->protocol >= PROTOCOL_V3 ?
 884                                                         ":LA:DIG%d:DISP %s" : ":DIG%d:TURN %s", ch->index,
 885                                                 ch->enabled ? "ON" : "OFF") != SR_OK)
 886                                         return SR_ERR;
 887                                 devc->digital_channels[ch->index] = ch->enabled;
 888                         }
 889                 }
 890         }
 891
 892         if (!devc->enabled_channels)
 893                 return SR_ERR;
 894
 895         /* Turn off LA module if on and no digital channels selected. */
 896         if (devc->la_enabled && !some_digital)
 897                 if (rigol_ds_config_set(sdi,
 898                                 devc->model->series->protocol >= PROTOCOL_V3 ?
 899                                         ":LA:STAT OFF" : ":LA:DISP OFF") != SR_OK)
 900                         return SR_ERR;
 901
 902         /* Set memory mode. */
 903         if (devc->data_source == DATA_SOURCE_SEGMENTED) {
 904                 sr_err("Data source 'Segmented' not yet supported");
 905                 return SR_ERR;
 906         }
 907
 908         devc->analog_frame_size = analog_frame_size(sdi);
 909         devc->digital_frame_size = digital_frame_size(sdi);
 910
 911         switch (devc->model->series->protocol) {
 912         case PROTOCOL_V2:
 913                 if (rigol_ds_config_set(sdi, ":ACQ:MEMD LONG") != SR_OK)
 914                         return SR_ERR;
 915                 break;
 916         case PROTOCOL_V3:
 917                 /* Apparently for the DS2000 the memory
 918                  * depth can only be set in Running state -
 919                  * this matches the behaviour of the UI. */
 920                 if (rigol_ds_config_set(sdi, ":RUN") != SR_OK)
 921                         return SR_ERR;
 922                 if (rigol_ds_config_set(sdi, ":ACQ:MDEP %d",
 923                                         devc->analog_frame_size) != SR_OK)
 924                         return SR_ERR;
 925                 if (rigol_ds_config_set(sdi, ":STOP") != SR_OK)
 926                         return SR_ERR;
 927                 break;
 928         default:
 929                 break;
 930         }
 931
 932         if (devc->data_source == DATA_SOURCE_LIVE)
 933                 if (rigol_ds_config_set(sdi, ":RUN") != SR_OK)
 934                         return SR_ERR;
 935
 936         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
 937                         rigol_ds_receive, (void *)sdi);
 938
 939         std_session_send_df_header(sdi);
 940
 941         devc->channel_entry = devc->enabled_channels;
 942
 943         if (rigol_ds_capture_start(sdi) != SR_OK)
 944                 return SR_ERR;
 945
 946         /* Start of first frame. */
 947         packet.type = SR_DF_FRAME_BEGIN;
 948         sr_session_send(sdi, &packet);
 949
 950         return SR_OK;
 951 }
 952
 953 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 954 {
 955         struct dev_context *devc;
 956         struct sr_scpi_dev_inst *scpi;
 957
 958         devc = sdi->priv;
 959
 960         std_session_send_df_end(sdi);
 961
 962         g_slist_free(devc->enabled_channels);
 963         devc->enabled_channels = NULL;
 964         scpi = sdi->conn;
 965         sr_scpi_source_remove(sdi->session, scpi);
 966
 967         return SR_OK;
 968 }
 969
 970 static struct sr_dev_driver rigol_ds_driver_info = {
 971         .name = "rigol-ds",
 972         .longname = "Rigol DS",
 973         .api_version = 1,
 974         .init = std_init,
 975         .cleanup = std_cleanup,
 976         .scan = scan,
 977         .dev_list = std_dev_list,
 978         .dev_clear = dev_clear,
 979         .config_get = config_get,
 980         .config_set = config_set,
 981         .config_list = config_list,
 982         .dev_open = dev_open,
 983         .dev_close = dev_close,
 984         .dev_acquisition_start = dev_acquisition_start,
 985         .dev_acquisition_stop = dev_acquisition_stop,
 986         .context = NULL,
 987 };
 988 SR_REGISTER_DEV_DRIVER(rigol_ds_driver_info);