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
 136 static const char *trigger_sources_4_chans[] = {
 137         "CH1", "CH2", "CH3", "CH4",
 138         "EXT", "AC Line",
 139         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 140         "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 141 };
 142
 143 static const char *trigger_slopes[] = {
 144         "r", "f",
 145 };
 146
 147 static const char *coupling[] = {
 148         "AC", "DC", "GND",
 149 };
 150
 151 static const uint64_t probe_factor[] = {
 152         1, 2, 5, 10, 20, 50, 100, 200, 500, 1000,
 153 };
 154
 155 /* Do not change the order of entries */
 156 static const char *data_sources[] = {
 157         "Live",
 158         "Memory",
 159         "Segmented",
 160 };
 161
 162 enum vendor {
 163         RIGOL,
 164         AGILENT,
 165 };
 166
 167 enum series {
 168         VS5000,
 169         DS1000,
 170         DS2000,
 171         DS2000A,
 172         DSO1000,
 173         DS1000Z,
 174 };
 175
 176 /* short name, full name */
 177 static const struct rigol_ds_vendor supported_vendors[] = {
 178         [RIGOL] = {"Rigol", "Rigol Technologies"},
 179         [AGILENT] = {"Agilent", "Agilent Technologies"},
 180 };
 181
 182 #define VENDOR(x) &supported_vendors[x]
 183 /* vendor, series/name, protocol, data format, max timebase, min vdiv,
 184  * number of horizontal divs, live waveform samples, memory buffer samples */
 185 static const struct rigol_ds_series supported_series[] = {
 186         [VS5000] = {VENDOR(RIGOL), "VS5000", PROTOCOL_V1, FORMAT_RAW,
 187                 {50, 1}, {2, 1000}, 14, 2048, 0},
 188         [DS1000] = {VENDOR(RIGOL), "DS1000", PROTOCOL_V2, FORMAT_IEEE488_2,
 189                 {50, 1}, {2, 1000}, 12, 600, 1048576},
 190         [DS2000] = {VENDOR(RIGOL), "DS2000", PROTOCOL_V3, FORMAT_IEEE488_2,
 191                 {500, 1}, {500, 1000000}, 14, 1400, 14000},
 192         [DS2000A] = {VENDOR(RIGOL), "DS2000A", PROTOCOL_V3, FORMAT_IEEE488_2,
 193                 {1000, 1}, {500, 1000000}, 14, 1400, 14000},
 194         [DSO1000] = {VENDOR(AGILENT), "DSO1000", PROTOCOL_V3, FORMAT_IEEE488_2,
 195                 {50, 1}, {2, 1000}, 12, 600, 20480},
 196         [DS1000Z] = {VENDOR(RIGOL), "DS1000Z", PROTOCOL_V4, FORMAT_IEEE488_2,
 197                 {50, 1}, {1, 1000}, 12, 1200, 12000000},
 198 };
 199
 200 #define SERIES(x) &supported_series[x]
 201 /*
 202  * Use a macro to select the correct list of trigger sources and its length
 203  * based on the number of analog channels and presence of digital channels.
 204  */
 205 #define CH_INFO(num, digital) \
 206         num, digital, trigger_sources_##num##_chans, \
 207         digital ? ARRAY_SIZE(trigger_sources_##num##_chans) : (num + 2)
 208 /* series, model, min timebase, analog channels, digital */
 209 static const struct rigol_ds_model supported_models[] = {
 210         {SERIES(VS5000), "VS5022", {20, 1000000000}, CH_INFO(2, false)},
 211         {SERIES(VS5000), "VS5042", {10, 1000000000}, CH_INFO(2, false)},
 212         {SERIES(VS5000), "VS5062", {5, 1000000000}, CH_INFO(2, false)},
 213         {SERIES(VS5000), "VS5102", {2, 1000000000}, CH_INFO(2, false)},
 214         {SERIES(VS5000), "VS5202", {2, 1000000000}, CH_INFO(2, false)},
 215         {SERIES(VS5000), "VS5022D", {20, 1000000000}, CH_INFO(2, true)},
 216         {SERIES(VS5000), "VS5042D", {10, 1000000000}, CH_INFO(2, true)},
 217         {SERIES(VS5000), "VS5062D", {5, 1000000000}, CH_INFO(2, true)},
 218         {SERIES(VS5000), "VS5102D", {2, 1000000000}, CH_INFO(2, true)},
 219         {SERIES(VS5000), "VS5202D", {2, 1000000000}, CH_INFO(2, true)},
 220         {SERIES(DS1000), "DS1052E", {5, 1000000000}, CH_INFO(2, false)},
 221         {SERIES(DS1000), "DS1102E", {2, 1000000000}, CH_INFO(2, false)},
 222         {SERIES(DS1000), "DS1152E", {2, 1000000000}, CH_INFO(2, false)},
 223         {SERIES(DS1000), "DS1052D", {5, 1000000000}, CH_INFO(2, true)},
 224         {SERIES(DS1000), "DS1102D", {2, 1000000000}, CH_INFO(2, true)},
 225         {SERIES(DS1000), "DS1152D", {2, 1000000000}, CH_INFO(2, true)},
 226         {SERIES(DS2000), "DS2072", {5, 1000000000}, CH_INFO(2, false)},
 227         {SERIES(DS2000), "DS2102", {5, 1000000000}, CH_INFO(2, false)},
 228         {SERIES(DS2000), "DS2202", {2, 1000000000}, CH_INFO(2, false)},
 229         {SERIES(DS2000), "DS2302", {1, 1000000000}, CH_INFO(2, false)},
 230         {SERIES(DS2000A), "DS2072A", {5, 1000000000}, CH_INFO(2, false)},
 231         {SERIES(DS2000A), "DS2102A", {5, 1000000000}, CH_INFO(2, false)},
 232         {SERIES(DS2000A), "DS2202A", {2, 1000000000}, CH_INFO(2, false)},
 233         {SERIES(DS2000A), "DS2302A", {1, 1000000000}, CH_INFO(2, false)},
 234         {SERIES(DS2000A), "MSO2072A", {5, 1000000000}, CH_INFO(2, true)},
 235         {SERIES(DS2000A), "MSO2102A", {5, 1000000000}, CH_INFO(2, true)},
 236         {SERIES(DS2000A), "MSO2202A", {2, 1000000000}, CH_INFO(2, true)},
 237         {SERIES(DS2000A), "MSO2302A", {1, 1000000000}, CH_INFO(2, true)},
 238         {SERIES(DSO1000), "DSO1002A", {5, 1000000000}, CH_INFO(2, false)},
 239         {SERIES(DSO1000), "DSO1004A", {5, 1000000000}, CH_INFO(4, false)},
 240         {SERIES(DSO1000), "DSO1012A", {2, 1000000000}, CH_INFO(2, false)},
 241         {SERIES(DSO1000), "DSO1014A", {2, 1000000000}, CH_INFO(4, false)},
 242         {SERIES(DSO1000), "DSO1022A", {2, 1000000000}, CH_INFO(2, false)},
 243         {SERIES(DSO1000), "DSO1024A", {2, 1000000000}, CH_INFO(4, false)},
 244         {SERIES(DS1000Z), "DS1054Z", {5, 1000000000}, CH_INFO(4, false)},
 245         {SERIES(DS1000Z), "DS1074Z", {5, 1000000000}, CH_INFO(4, false)},
 246         {SERIES(DS1000Z), "DS1104Z", {5, 1000000000}, CH_INFO(4, false)},
 247         {SERIES(DS1000Z), "DS1074Z-S", {5, 1000000000}, CH_INFO(4, false)},
 248         {SERIES(DS1000Z), "DS1104Z-S", {5, 1000000000}, CH_INFO(4, false)},
 249         {SERIES(DS1000Z), "DS1074Z Plus", {5, 1000000000}, CH_INFO(4, false)},
 250         {SERIES(DS1000Z), "DS1104Z Plus", {5, 1000000000}, CH_INFO(4, false)},
 251         {SERIES(DS1000Z), "MSO1074Z", {5, 1000000000}, CH_INFO(4, true)},
 252         {SERIES(DS1000Z), "MSO1104Z", {5, 1000000000}, CH_INFO(4, true)},
 253         {SERIES(DS1000Z), "MSO1074Z-S", {5, 1000000000}, CH_INFO(4, true)},
 254         {SERIES(DS1000Z), "MSO1104Z-S", {5, 1000000000}, CH_INFO(4, true)},
 255 };
 256
 257 static struct sr_dev_driver rigol_ds_driver_info;
 258
 259 static void clear_helper(struct dev_context *devc)
 260 {
 261         unsigned int i;
 262
 263         g_free(devc->data);
 264         g_free(devc->buffer);
 265         for (i = 0; i < ARRAY_SIZE(devc->coupling); i++)
 266                 g_free(devc->coupling[i]);
 267         g_free(devc->trigger_source);
 268         g_free(devc->trigger_slope);
 269         g_free(devc->analog_groups);
 270 }
 271
 272 static int dev_clear(const struct sr_dev_driver *di)
 273 {
 274         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 275 }
 276
 277 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
 278 {
 279         struct dev_context *devc;
 280         struct sr_dev_inst *sdi;
 281         struct sr_scpi_hw_info *hw_info;
 282         struct sr_channel *ch;
 283         long n[3];
 284         unsigned int i;
 285         const struct rigol_ds_model *model = NULL;
 286         gchar *channel_name, **version;
 287
 288         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
 289                 sr_info("Couldn't get IDN response, retrying.");
 290                 sr_scpi_close(scpi);
 291                 sr_scpi_open(scpi);
 292                 if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
 293                         sr_info("Couldn't get IDN response.");
 294                         return NULL;
 295                 }
 296         }
 297
 298         for (i = 0; i < ARRAY_SIZE(supported_models); i++) {
 299                 if (!g_ascii_strcasecmp(hw_info->manufacturer,
 300                                         supported_models[i].series->vendor->full_name) &&
 301                                 !strcmp(hw_info->model, supported_models[i].name)) {
 302                         model = &supported_models[i];
 303                         break;
 304                 }
 305         }
 306
 307         if (!model) {
 308                 sr_scpi_hw_info_free(hw_info);
 309                 return NULL;
 310         }
 311
 312         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 313         sdi->vendor = g_strdup(model->series->vendor->name);
 314         sdi->model = g_strdup(model->name);
 315         sdi->version = g_strdup(hw_info->firmware_version);
 316         sdi->conn = scpi;
 317         sdi->driver = &rigol_ds_driver_info;
 318         sdi->inst_type = SR_INST_SCPI;
 319         sdi->serial_num = g_strdup(hw_info->serial_number);
 320         devc = g_malloc0(sizeof(struct dev_context));
 321         devc->limit_frames = 0;
 322         devc->model = model;
 323         devc->format = model->series->format;
 324
 325         /* DS1000 models with firmware before 0.2.4 used the old data format. */
 326         if (model->series == SERIES(DS1000)) {
 327                 version = g_strsplit(hw_info->firmware_version, ".", 0);
 328                 do {
 329                         if (!version[0] || !version[1] || !version[2])
 330                                 break;
 331                         if (version[0][0] == 0 || version[1][0] == 0 || version[2][0] == 0)
 332                                 break;
 333                         for (i = 0; i < 3; i++) {
 334                                 if (sr_atol(version[i], &n[i]) != SR_OK)
 335                                         break;
 336                         }
 337                         if (i != 3)
 338                                 break;
 339                         scpi->firmware_version = n[0] * 100 + n[1] * 10 + n[2];
 340                         if (scpi->firmware_version < 24) {
 341                                 sr_dbg("Found DS1000 firmware < 0.2.4, using raw data format.");
 342                                 devc->format = FORMAT_RAW;
 343                         }
 344                         break;
 345                 } while (0);
 346                 g_strfreev(version);
 347         }
 348
 349         sr_scpi_hw_info_free(hw_info);
 350
 351         devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) *
 352                                         model->analog_channels);
 353
 354         for (i = 0; i < model->analog_channels; i++) {
 355                 channel_name = g_strdup_printf("CH%d", i + 1);
 356                 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_name);
 357
 358                 devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
 359
 360                 devc->analog_groups[i]->name = channel_name;
 361                 devc->analog_groups[i]->channels = g_slist_append(NULL, ch);
 362                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
 363                                 devc->analog_groups[i]);
 364         }
 365
 366         if (devc->model->has_digital) {
 367                 devc->digital_group = g_malloc0(sizeof(struct sr_channel_group));
 368
 369                 for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
 370                         channel_name = g_strdup_printf("D%d", i);
 371                         ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
 372                         g_free(channel_name);
 373                         devc->digital_group->channels = g_slist_append(
 374                                         devc->digital_group->channels, ch);
 375                 }
 376                 devc->digital_group->name = g_strdup("LA");
 377                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
 378                                 devc->digital_group);
 379         }
 380
 381         for (i = 0; i < ARRAY_SIZE(timebases); i++) {
 382                 if (!memcmp(&devc->model->min_timebase, &timebases[i], sizeof(uint64_t[2])))
 383                         devc->timebases = &timebases[i];
 384                 if (!memcmp(&devc->model->series->max_timebase, &timebases[i], sizeof(uint64_t[2])))
 385                         devc->num_timebases = &timebases[i] - devc->timebases + 1;
 386         }
 387
 388         for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
 389                 if (!memcmp(&devc->model->series->min_vdiv,
 390                                         &vdivs[i], sizeof(uint64_t[2]))) {
 391                         devc->vdivs = &vdivs[i];
 392                         devc->num_vdivs = ARRAY_SIZE(vdivs) - i;
 393                 }
 394         }
 395
 396         devc->buffer = g_malloc(ACQ_BUFFER_SIZE);
 397         devc->data = g_malloc(ACQ_BUFFER_SIZE * sizeof(float));
 398
 399         devc->data_source = DATA_SOURCE_LIVE;
 400
 401         sdi->priv = devc;
 402
 403         return sdi;
 404 }
 405
 406 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 407 {
 408         return sr_scpi_scan(di->context, options, probe_device);
 409 }
 410
 411 static int dev_open(struct sr_dev_inst *sdi)
 412 {
 413         int ret;
 414         struct sr_scpi_dev_inst *scpi = sdi->conn;
 415
 416         if ((ret = sr_scpi_open(scpi)) < 0) {
 417                 sr_err("Failed to open SCPI device: %s.", sr_strerror(ret));
 418                 return SR_ERR;
 419         }
 420
 421         if ((ret = rigol_ds_get_dev_cfg(sdi)) < 0) {
 422                 sr_err("Failed to get device config: %s.", sr_strerror(ret));
 423                 return SR_ERR;
 424         }
 425
 426         return SR_OK;
 427 }
 428
 429 static int dev_close(struct sr_dev_inst *sdi)
 430 {
 431         struct sr_scpi_dev_inst *scpi;
 432         struct dev_context *devc;
 433
 434         scpi = sdi->conn;
 435         devc = sdi->priv;
 436
 437         if (!scpi)
 438                 return SR_ERR_BUG;
 439
 440         if (devc->model->series->protocol == PROTOCOL_V2)
 441                 rigol_ds_config_set(sdi, ":KEY:LOCK DISABLE");
 442
 443         return sr_scpi_close(scpi);
 444 }
 445
 446 static int analog_frame_size(const struct sr_dev_inst *sdi)
 447 {
 448         struct dev_context *devc = sdi->priv;
 449         struct sr_channel *ch;
 450         int analog_channels = 0;
 451         GSList *l;
 452
 453         for (l = sdi->channels; l; l = l->next) {
 454                 ch = l->data;
 455                 if (ch->type == SR_CHANNEL_ANALOG && ch->enabled)
 456                         analog_channels++;
 457         }
 458
 459         if (analog_channels == 0)
 460                 return 0;
 461
 462         switch (devc->data_source) {
 463         case DATA_SOURCE_LIVE:
 464                 return devc->model->series->live_samples;
 465         case DATA_SOURCE_MEMORY:
 466                 return devc->model->series->buffer_samples / analog_channels;
 467         default:
 468                 return 0;
 469         }
 470 }
 471
 472 static int digital_frame_size(const struct sr_dev_inst *sdi)
 473 {
 474         struct dev_context *devc = sdi->priv;
 475
 476         switch (devc->data_source) {
 477         case DATA_SOURCE_LIVE:
 478                 return devc->model->series->live_samples * 2;
 479         case DATA_SOURCE_MEMORY:
 480                 return devc->model->series->buffer_samples * 2;
 481         default:
 482                 return 0;
 483         }
 484 }
 485
 486 static int config_get(uint32_t key, GVariant **data,
 487         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 488 {
 489         struct dev_context *devc;
 490         struct sr_channel *ch;
 491         const char *tmp_str;
 492         uint64_t samplerate;
 493         int analog_channel = -1;
 494         float smallest_diff = INFINITY;
 495         int idx = -1;
 496         unsigned i;
 497
 498         if (!sdi)
 499                 return SR_ERR_ARG;
 500
 501         devc = sdi->priv;
 502
 503         /* If a channel group is specified, it must be a valid one. */
 504         if (cg && !g_slist_find(sdi->channel_groups, cg)) {
 505                 sr_err("Invalid channel group specified.");
 506                 return SR_ERR;
 507         }
 508
 509         if (cg) {
 510                 ch = g_slist_nth_data(cg->channels, 0);
 511                 if (!ch)
 512                         return SR_ERR;
 513                 if (ch->type == SR_CHANNEL_ANALOG) {
 514                         if (ch->name[2] < '1' || ch->name[2] > '4')
 515                                 return SR_ERR;
 516                         analog_channel = ch->name[2] - '1';
 517                 }
 518         }
 519
 520         switch (key) {
 521         case SR_CONF_NUM_HDIV:
 522                 *data = g_variant_new_int32(devc->model->series->num_horizontal_divs);
 523                 break;
 524         case SR_CONF_NUM_VDIV:
 525                 *data = g_variant_new_int32(devc->num_vdivs);
 526                 break;
 527         case SR_CONF_DATA_SOURCE:
 528                 if (devc->data_source == DATA_SOURCE_LIVE)
 529                         *data = g_variant_new_string("Live");
 530                 else if (devc->data_source == DATA_SOURCE_MEMORY)
 531                         *data = g_variant_new_string("Memory");
 532                 else
 533                         *data = g_variant_new_string("Segmented");
 534                 break;
 535         case SR_CONF_SAMPLERATE:
 536                 if (devc->data_source == DATA_SOURCE_LIVE) {
 537                         samplerate = analog_frame_size(sdi) /
 538                                 (devc->timebase * devc->model->series->num_horizontal_divs);
 539                         *data = g_variant_new_uint64(samplerate);
 540                 } else {
 541                         sr_dbg("Unknown data source: %d.", devc->data_source);
 542                         return SR_ERR_NA;
 543                 }
 544                 break;
 545         case SR_CONF_TRIGGER_SOURCE:
 546                 if (!strcmp(devc->trigger_source, "ACL"))
 547                         tmp_str = "AC Line";
 548                 else if (!strcmp(devc->trigger_source, "CHAN1"))
 549                         tmp_str = "CH1";
 550                 else if (!strcmp(devc->trigger_source, "CHAN2"))
 551                         tmp_str = "CH2";
 552                 else if (!strcmp(devc->trigger_source, "CHAN3"))
 553                         tmp_str = "CH3";
 554                 else if (!strcmp(devc->trigger_source, "CHAN4"))
 555                         tmp_str = "CH4";
 556                 else
 557                         tmp_str = devc->trigger_source;
 558                 *data = g_variant_new_string(tmp_str);
 559                 break;
 560         case SR_CONF_TRIGGER_SLOPE:
 561                 if (!strncmp(devc->trigger_slope, "POS", 3)) {
 562                         tmp_str = "r";
 563                 } else if (!strncmp(devc->trigger_slope, "NEG", 3)) {
 564                         tmp_str = "f";
 565                 } else {
 566                         sr_dbg("Unknown trigger slope: '%s'.", devc->trigger_slope);
 567                         return SR_ERR_NA;
 568                 }
 569                 *data = g_variant_new_string(tmp_str);
 570                 break;
 571         case SR_CONF_TRIGGER_LEVEL:
 572                 *data = g_variant_new_double(devc->trigger_level);
 573                 break;
 574         case SR_CONF_TIMEBASE:
 575                 for (i = 0; i < devc->num_timebases; i++) {
 576                         float tb = (float)devc->timebases[i][0] / devc->timebases[i][1];
 577                         float diff = fabs(devc->timebase - tb);
 578                         if (diff < smallest_diff) {
 579                                 smallest_diff = diff;
 580                                 idx = i;
 581                         }
 582                 }
 583                 if (idx < 0) {
 584                         sr_dbg("Negative timebase index: %d.", idx);
 585                         return SR_ERR_NA;
 586                 }
 587                 *data = g_variant_new("(tt)", devc->timebases[idx][0],
 588                                               devc->timebases[idx][1]);
 589                 break;
 590         case SR_CONF_VDIV:
 591                 if (analog_channel < 0) {
 592                         sr_dbg("Negative analog channel: %d.", analog_channel);
 593                         return SR_ERR_NA;
 594                 }
 595                 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
 596                         float vdiv = (float)vdivs[i][0] / vdivs[i][1];
 597                         float diff = fabs(devc->vdiv[analog_channel] - vdiv);
 598                         if (diff < smallest_diff) {
 599                                 smallest_diff = diff;
 600                                 idx = i;
 601                         }
 602                 }
 603                 if (idx < 0) {
 604                         sr_dbg("Negative vdiv index: %d.", idx);
 605                         return SR_ERR_NA;
 606                 }
 607                 *data = g_variant_new("(tt)", vdivs[idx][0], vdivs[idx][1]);
 608                 break;
 609         case SR_CONF_COUPLING:
 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_string(devc->coupling[analog_channel]);
 615                 break;
 616         case SR_CONF_PROBE_FACTOR:
 617                 if (analog_channel < 0) {
 618                         sr_dbg("Negative analog channel: %d.", analog_channel);
 619                         return SR_ERR_NA;
 620                 }
 621                 *data = g_variant_new_uint64(devc->attenuation[analog_channel]);
 622                 break;
 623         default:
 624                 return SR_ERR_NA;
 625         }
 626
 627         return SR_OK;
 628 }
 629
 630 static int config_set(uint32_t key, GVariant *data,
 631         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 632 {
 633         struct dev_context *devc;
 634         uint64_t p;
 635         double t_dbl;
 636         int ret, idx, i;
 637         const char *tmp_str;
 638         char buffer[16];
 639
 640         devc = sdi->priv;
 641
 642         /* If a channel group is specified, it must be a valid one. */
 643         if (cg && !g_slist_find(sdi->channel_groups, cg)) {
 644                 sr_err("Invalid channel group specified.");
 645                 return SR_ERR;
 646         }
 647
 648         switch (key) {
 649         case SR_CONF_LIMIT_FRAMES:
 650                 devc->limit_frames = g_variant_get_uint64(data);
 651                 break;
 652         case SR_CONF_TRIGGER_SLOPE:
 653                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0)
 654                         return SR_ERR_ARG;
 655                 g_free(devc->trigger_slope);
 656                 devc->trigger_slope = g_strdup((trigger_slopes[idx][0] == 'r') ? "POS" : "NEG");
 657                 return rigol_ds_config_set(sdi, ":TRIG:EDGE:SLOP %s", devc->trigger_slope);
 658         case SR_CONF_HORIZ_TRIGGERPOS:
 659                 t_dbl = g_variant_get_double(data);
 660                 if (t_dbl < 0.0 || t_dbl > 1.0) {
 661                         sr_err("Invalid horiz. trigger position: %g.", t_dbl);
 662                         return SR_ERR;
 663                 }
 664                 devc->horiz_triggerpos = t_dbl;
 665                 /* We have the trigger offset as a percentage of the frame, but
 666                  * need to express this in seconds. */
 667                 t_dbl = -(devc->horiz_triggerpos - 0.5) * devc->timebase * devc->num_timebases;
 668                 g_ascii_formatd(buffer, sizeof(buffer), "%.6f", t_dbl);
 669                 return rigol_ds_config_set(sdi, ":TIM:OFFS %s", buffer);
 670         case SR_CONF_TRIGGER_LEVEL:
 671                 t_dbl = g_variant_get_double(data);
 672                 g_ascii_formatd(buffer, sizeof(buffer), "%.3f", t_dbl);
 673                 ret = rigol_ds_config_set(sdi, ":TRIG:EDGE:LEV %s", buffer);
 674                 if (ret == SR_OK)
 675                         devc->trigger_level = t_dbl;
 676                 return ret;
 677         case SR_CONF_TIMEBASE:
 678                 if ((idx = std_u64_tuple_idx(data, devc->timebases, devc->num_timebases)) < 0)
 679                         return SR_ERR_ARG;
 680                 devc->timebase = (float)devc->timebases[idx][0] / devc->timebases[idx][1];
 681                 g_ascii_formatd(buffer, sizeof(buffer), "%.9f",
 682                                 devc->timebase);
 683                 return rigol_ds_config_set(sdi, ":TIM:SCAL %s", buffer);
 684         case SR_CONF_TRIGGER_SOURCE:
 685                 if ((idx = std_str_idx(data, devc->model->trigger_sources, devc->model->num_trigger_sources)) < 0)
 686                         return SR_ERR_ARG;
 687                 g_free(devc->trigger_source);
 688                 devc->trigger_source = g_strdup(devc->model->trigger_sources[idx]);
 689                 if (!strcmp(devc->trigger_source, "AC Line"))
 690                         tmp_str = "ACL";
 691                 else if (!strcmp(devc->trigger_source, "CH1"))
 692                         tmp_str = "CHAN1";
 693                 else if (!strcmp(devc->trigger_source, "CH2"))
 694                         tmp_str = "CHAN2";
 695                 else if (!strcmp(devc->trigger_source, "CH3"))
 696                         tmp_str = "CHAN3";
 697                 else if (!strcmp(devc->trigger_source, "CH4"))
 698                         tmp_str = "CHAN4";
 699                 else
 700                         tmp_str = (char *)devc->trigger_source;
 701                 return rigol_ds_config_set(sdi, ":TRIG:EDGE:SOUR %s", tmp_str);
 702         case SR_CONF_VDIV:
 703                 if (!cg)
 704                         return SR_ERR_CHANNEL_GROUP;
 705                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 706                         return SR_ERR_ARG;
 707                 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
 708                         return SR_ERR_ARG;
 709                 devc->vdiv[i] = (float)vdivs[idx][0] / vdivs[idx][1];
 710                 g_ascii_formatd(buffer, sizeof(buffer), "%.3f", devc->vdiv[i]);
 711                 return rigol_ds_config_set(sdi, ":CHAN%d:SCAL %s", i + 1, buffer);
 712         case SR_CONF_COUPLING:
 713                 if (!cg)
 714                         return SR_ERR_CHANNEL_GROUP;
 715                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 716                         return SR_ERR_ARG;
 717                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
 718                         return SR_ERR_ARG;
 719                 g_free(devc->coupling[i]);
 720                 devc->coupling[i] = g_strdup(coupling[idx]);
 721                 return rigol_ds_config_set(sdi, ":CHAN%d:COUP %s", i + 1, devc->coupling[i]);
 722         case SR_CONF_PROBE_FACTOR:
 723                 if (!cg)
 724                         return SR_ERR_CHANNEL_GROUP;
 725                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 726                         return SR_ERR_ARG;
 727                 if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(probe_factor))) < 0)
 728                         return SR_ERR_ARG;
 729                 p = g_variant_get_uint64(data);
 730                 devc->attenuation[i] = probe_factor[idx];
 731                 ret = rigol_ds_config_set(sdi, ":CHAN%d:PROB %"PRIu64, i + 1, p);
 732                 if (ret == SR_OK)
 733                         rigol_ds_get_dev_cfg_vertical(sdi);
 734                 return ret;
 735         case SR_CONF_DATA_SOURCE:
 736                 tmp_str = g_variant_get_string(data, NULL);
 737                 if (!strcmp(tmp_str, "Live"))
 738                         devc->data_source = DATA_SOURCE_LIVE;
 739                 else if (devc->model->series->protocol >= PROTOCOL_V2
 740                         && !strcmp(tmp_str, "Memory"))
 741                         devc->data_source = DATA_SOURCE_MEMORY;
 742                 else if (devc->model->series->protocol >= PROTOCOL_V3
 743                          && !strcmp(tmp_str, "Segmented"))
 744                         devc->data_source = DATA_SOURCE_SEGMENTED;
 745                 else {
 746                         sr_err("Unknown data source: '%s'.", tmp_str);
 747                         return SR_ERR;
 748                 }
 749                 break;
 750         default:
 751                 return SR_ERR_NA;
 752         }
 753
 754         return SR_OK;
 755 }
 756
 757 static int config_list(uint32_t key, GVariant **data,
 758         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 759 {
 760         struct dev_context *devc;
 761
 762         devc = (sdi) ? sdi->priv : NULL;
 763
 764         switch (key) {
 765         case SR_CONF_SCAN_OPTIONS:
 766         case SR_CONF_DEVICE_OPTIONS:
 767                 if (!cg)
 768                         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 769                 if (!devc)
 770                         return SR_ERR_ARG;
 771                 if (cg == devc->digital_group) {
 772                         *data = std_gvar_array_u32(NULL, 0);
 773                         return SR_OK;
 774                 } else {
 775                         if (std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels) < 0)
 776                                 return SR_ERR_ARG;
 777                         *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog));
 778                         return SR_OK;
 779                 }
 780                 break;
 781         case SR_CONF_COUPLING:
 782                 if (!cg)
 783                         return SR_ERR_CHANNEL_GROUP;
 784                 *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling));
 785                 break;
 786         case SR_CONF_PROBE_FACTOR:
 787                 if (!cg)
 788                         return SR_ERR_CHANNEL_GROUP;
 789                 *data = std_gvar_array_u64(ARRAY_AND_SIZE(probe_factor));
 790                 break;
 791         case SR_CONF_VDIV:
 792                 if (!devc)
 793                         /* Can't know this until we have the exact model. */
 794                         return SR_ERR_ARG;
 795                 if (!cg)
 796                         return SR_ERR_CHANNEL_GROUP;
 797                 *data = std_gvar_tuple_array(devc->vdivs, devc->num_vdivs);
 798                 break;
 799         case SR_CONF_TIMEBASE:
 800                 if (!devc)
 801                         /* Can't know this until we have the exact model. */
 802                         return SR_ERR_ARG;
 803                 if (devc->num_timebases <= 0)
 804                         return SR_ERR_NA;
 805                 *data = std_gvar_tuple_array(devc->timebases, devc->num_timebases);
 806                 break;
 807         case SR_CONF_TRIGGER_SOURCE:
 808                 if (!devc)
 809                         /* Can't know this until we have the exact model. */
 810                         return SR_ERR_ARG;
 811                 *data = g_variant_new_strv(devc->model->trigger_sources, devc->model->num_trigger_sources);
 812                 break;
 813         case SR_CONF_TRIGGER_SLOPE:
 814                 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
 815                 break;
 816         case SR_CONF_DATA_SOURCE:
 817                 if (!devc)
 818                         /* Can't know this until we have the exact model. */
 819                         return SR_ERR_ARG;
 820                 switch (devc->model->series->protocol) {
 821                 case PROTOCOL_V1:
 822                         *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources) - 2);
 823                         break;
 824                 case PROTOCOL_V2:
 825                         *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources) - 1);
 826                         break;
 827                 default:
 828                         *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
 829                         break;
 830                 }
 831                 break;
 832         default:
 833                 return SR_ERR_NA;
 834         }
 835
 836         return SR_OK;
 837 }
 838
 839 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 840 {
 841         struct sr_scpi_dev_inst *scpi;
 842         struct dev_context *devc;
 843         struct sr_channel *ch;
 844         struct sr_datafeed_packet packet;
 845         gboolean some_digital;
 846         GSList *l;
 847
 848         scpi = sdi->conn;
 849         devc = sdi->priv;
 850
 851         devc->num_frames = 0;
 852
 853         some_digital = FALSE;
 854         for (l = sdi->channels; l; l = l->next) {
 855                 ch = l->data;
 856                 sr_dbg("handling channel %s", ch->name);
 857                 if (ch->type == SR_CHANNEL_ANALOG) {
 858                         if (ch->enabled)
 859                                 devc->enabled_channels = g_slist_append(
 860                                                 devc->enabled_channels, ch);
 861                         if (ch->enabled != devc->analog_channels[ch->index]) {
 862                                 /* Enabled channel is currently disabled, or vice versa. */
 863                                 if (rigol_ds_config_set(sdi, ":CHAN%d:DISP %s", ch->index + 1,
 864                                                 ch->enabled ? "ON" : "OFF") != SR_OK)
 865                                         return SR_ERR;
 866                                 devc->analog_channels[ch->index] = ch->enabled;
 867                         }
 868                 } else if (ch->type == SR_CHANNEL_LOGIC) {
 869                         /* Only one list entry for older protocols. All channels are
 870                          * retrieved together when this entry is processed. */
 871                         if (ch->enabled && (
 872                                                 devc->model->series->protocol > PROTOCOL_V3 ||
 873                                                 !some_digital))
 874                                 devc->enabled_channels = g_slist_append(
 875                                                 devc->enabled_channels, ch);
 876                         if (ch->enabled) {
 877                                 some_digital = TRUE;
 878                                 /* Turn on LA module if currently off. */
 879                                 if (!devc->la_enabled) {
 880                                         if (rigol_ds_config_set(sdi,
 881                                                         devc->model->series->protocol >= PROTOCOL_V3 ?
 882                                                                 ":LA:STAT ON" : ":LA:DISP ON") != SR_OK)
 883                                                 return SR_ERR;
 884                                         devc->la_enabled = TRUE;
 885                                 }
 886                         }
 887                         if (ch->enabled != devc->digital_channels[ch->index]) {
 888                                 /* Enabled channel is currently disabled, or vice versa. */
 889                                 if (rigol_ds_config_set(sdi,
 890                                                 devc->model->series->protocol >= PROTOCOL_V3 ?
 891                                                         ":LA:DIG%d:DISP %s" : ":DIG%d:TURN %s", ch->index,
 892                                                 ch->enabled ? "ON" : "OFF") != SR_OK)
 893                                         return SR_ERR;
 894                                 devc->digital_channels[ch->index] = ch->enabled;
 895                         }
 896                 }
 897         }
 898
 899         if (!devc->enabled_channels)
 900                 return SR_ERR;
 901
 902         /* Turn off LA module if on and no digital channels selected. */
 903         if (devc->la_enabled && !some_digital)
 904                 if (rigol_ds_config_set(sdi,
 905                                 devc->model->series->protocol >= PROTOCOL_V3 ?
 906                                         ":LA:STAT OFF" : ":LA:DISP OFF") != SR_OK)
 907                         return SR_ERR;
 908
 909         /* Set memory mode. */
 910         if (devc->data_source == DATA_SOURCE_SEGMENTED) {
 911                 sr_err("Data source 'Segmented' not yet supported");
 912                 return SR_ERR;
 913         }
 914
 915         devc->analog_frame_size = analog_frame_size(sdi);
 916         devc->digital_frame_size = digital_frame_size(sdi);
 917
 918         switch (devc->model->series->protocol) {
 919         case PROTOCOL_V2:
 920                 if (rigol_ds_config_set(sdi, ":ACQ:MEMD LONG") != SR_OK)
 921                         return SR_ERR;
 922                 break;
 923         case PROTOCOL_V3:
 924                 /* Apparently for the DS2000 the memory
 925                  * depth can only be set in Running state -
 926                  * this matches the behaviour of the UI. */
 927                 if (rigol_ds_config_set(sdi, ":RUN") != SR_OK)
 928                         return SR_ERR;
 929                 if (rigol_ds_config_set(sdi, ":ACQ:MDEP %d",
 930                                         devc->analog_frame_size) != SR_OK)
 931                         return SR_ERR;
 932                 if (rigol_ds_config_set(sdi, ":STOP") != SR_OK)
 933                         return SR_ERR;
 934                 break;
 935         default:
 936                 break;
 937         }
 938
 939         if (devc->data_source == DATA_SOURCE_LIVE)
 940                 if (rigol_ds_config_set(sdi, ":RUN") != SR_OK)
 941                         return SR_ERR;
 942
 943         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
 944                         rigol_ds_receive, (void *)sdi);
 945
 946         std_session_send_df_header(sdi);
 947
 948         devc->channel_entry = devc->enabled_channels;
 949
 950         if (rigol_ds_capture_start(sdi) != SR_OK)
 951                 return SR_ERR;
 952
 953         /* Start of first frame. */
 954         packet.type = SR_DF_FRAME_BEGIN;
 955         sr_session_send(sdi, &packet);
 956
 957         return SR_OK;
 958 }
 959
 960 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 961 {
 962         struct dev_context *devc;
 963         struct sr_scpi_dev_inst *scpi;
 964
 965         devc = sdi->priv;
 966
 967         std_session_send_df_end(sdi);
 968
 969         g_slist_free(devc->enabled_channels);
 970         devc->enabled_channels = NULL;
 971         scpi = sdi->conn;
 972         sr_scpi_source_remove(sdi->session, scpi);
 973
 974         return SR_OK;
 975 }
 976
 977 static struct sr_dev_driver rigol_ds_driver_info = {
 978         .name = "rigol-ds",
 979         .longname = "Rigol DS",
 980         .api_version = 1,
 981         .init = std_init,
 982         .cleanup = std_cleanup,
 983         .scan = scan,
 984         .dev_list = std_dev_list,
 985         .dev_clear = dev_clear,
 986         .config_get = config_get,
 987         .config_set = config_set,
 988         .config_list = config_list,
 989         .dev_open = dev_open,
 990         .dev_close = dev_close,
 991         .dev_acquisition_start = dev_acquisition_start,
 992         .dev_acquisition_stop = dev_acquisition_stop,
 993         .context = NULL,
 994 };
 995 SR_REGISTER_DEV_DRIVER(rigol_ds_driver_info);