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         DS4000,
 175 };
 176
 177 /* short name, full name */
 178 static const struct rigol_ds_vendor supported_vendors[] = {
 179         [RIGOL] = {"Rigol", "Rigol Technologies"},
 180         [AGILENT] = {"Agilent", "Agilent Technologies"},
 181 };
 182
 183 #define VENDOR(x) &supported_vendors[x]
 184 /* vendor, series/name, protocol, data format, max timebase, min vdiv,
 185  * number of horizontal divs, live waveform samples, memory buffer samples */
 186 static const struct rigol_ds_series supported_series[] = {
 187         [VS5000] = {VENDOR(RIGOL), "VS5000", PROTOCOL_V1, FORMAT_RAW,
 188                 {50, 1}, {2, 1000}, 14, 2048, 0},
 189         [DS1000] = {VENDOR(RIGOL), "DS1000", PROTOCOL_V2, FORMAT_IEEE488_2,
 190                 {50, 1}, {2, 1000}, 12, 600, 1048576},
 191         [DS2000] = {VENDOR(RIGOL), "DS2000", PROTOCOL_V3, FORMAT_IEEE488_2,
 192                 {500, 1}, {500, 1000000}, 14, 1400, 14000},
 193         [DS2000A] = {VENDOR(RIGOL), "DS2000A", PROTOCOL_V3, FORMAT_IEEE488_2,
 194                 {1000, 1}, {500, 1000000}, 14, 1400, 14000},
 195         [DSO1000] = {VENDOR(AGILENT), "DSO1000", PROTOCOL_V3, FORMAT_IEEE488_2,
 196                 {50, 1}, {2, 1000}, 12, 600, 20480},
 197         [DS1000Z] = {VENDOR(RIGOL), "DS1000Z", PROTOCOL_V4, FORMAT_IEEE488_2,
 198                 {50, 1}, {1, 1000}, 12, 1200, 12000000},
 199         [DS4000] = {VENDOR(RIGOL), "DS4000", PROTOCOL_V4, FORMAT_IEEE488_2,
 200                 {1000, 1}, {1, 1000}, 14, 1400, 14000},
 201 };
 202
 203 #define SERIES(x) &supported_series[x]
 204 /*
 205  * Use a macro to select the correct list of trigger sources and its length
 206  * based on the number of analog channels and presence of digital channels.
 207  */
 208 #define CH_INFO(num, digital) \
 209         num, digital, trigger_sources_##num##_chans, \
 210         digital ? ARRAY_SIZE(trigger_sources_##num##_chans) : (num + 2)
 211 /* series, model, min timebase, analog channels, digital */
 212 static const struct rigol_ds_model supported_models[] = {
 213         {SERIES(VS5000), "VS5022", {20, 1000000000}, CH_INFO(2, false)},
 214         {SERIES(VS5000), "VS5042", {10, 1000000000}, CH_INFO(2, false)},
 215         {SERIES(VS5000), "VS5062", {5, 1000000000}, CH_INFO(2, false)},
 216         {SERIES(VS5000), "VS5102", {2, 1000000000}, CH_INFO(2, false)},
 217         {SERIES(VS5000), "VS5202", {2, 1000000000}, CH_INFO(2, false)},
 218         {SERIES(VS5000), "VS5022D", {20, 1000000000}, CH_INFO(2, true)},
 219         {SERIES(VS5000), "VS5042D", {10, 1000000000}, CH_INFO(2, true)},
 220         {SERIES(VS5000), "VS5062D", {5, 1000000000}, CH_INFO(2, true)},
 221         {SERIES(VS5000), "VS5102D", {2, 1000000000}, CH_INFO(2, true)},
 222         {SERIES(VS5000), "VS5202D", {2, 1000000000}, CH_INFO(2, true)},
 223         {SERIES(DS1000), "DS1052E", {5, 1000000000}, CH_INFO(2, false)},
 224         {SERIES(DS1000), "DS1102E", {2, 1000000000}, CH_INFO(2, false)},
 225         {SERIES(DS1000), "DS1152E", {2, 1000000000}, CH_INFO(2, false)},
 226         {SERIES(DS1000), "DS1052D", {5, 1000000000}, CH_INFO(2, true)},
 227         {SERIES(DS1000), "DS1102D", {2, 1000000000}, CH_INFO(2, true)},
 228         {SERIES(DS1000), "DS1152D", {2, 1000000000}, CH_INFO(2, true)},
 229         {SERIES(DS2000), "DS2072", {5, 1000000000}, CH_INFO(2, false)},
 230         {SERIES(DS2000), "DS2102", {5, 1000000000}, CH_INFO(2, false)},
 231         {SERIES(DS2000), "DS2202", {2, 1000000000}, CH_INFO(2, false)},
 232         {SERIES(DS2000), "DS2302", {1, 1000000000}, CH_INFO(2, false)},
 233         {SERIES(DS2000A), "DS2072A", {5, 1000000000}, CH_INFO(2, false)},
 234         {SERIES(DS2000A), "DS2102A", {5, 1000000000}, CH_INFO(2, false)},
 235         {SERIES(DS2000A), "DS2202A", {2, 1000000000}, CH_INFO(2, false)},
 236         {SERIES(DS2000A), "DS2302A", {1, 1000000000}, CH_INFO(2, false)},
 237         {SERIES(DS2000A), "MSO2072A", {5, 1000000000}, CH_INFO(2, true)},
 238         {SERIES(DS2000A), "MSO2102A", {5, 1000000000}, CH_INFO(2, true)},
 239         {SERIES(DS2000A), "MSO2202A", {2, 1000000000}, CH_INFO(2, true)},
 240         {SERIES(DS2000A), "MSO2302A", {1, 1000000000}, CH_INFO(2, true)},
 241         {SERIES(DSO1000), "DSO1002A", {5, 1000000000}, CH_INFO(2, false)},
 242         {SERIES(DSO1000), "DSO1004A", {5, 1000000000}, CH_INFO(4, false)},
 243         {SERIES(DSO1000), "DSO1012A", {2, 1000000000}, CH_INFO(2, false)},
 244         {SERIES(DSO1000), "DSO1014A", {2, 1000000000}, CH_INFO(4, false)},
 245         {SERIES(DSO1000), "DSO1022A", {2, 1000000000}, CH_INFO(2, false)},
 246         {SERIES(DSO1000), "DSO1024A", {2, 1000000000}, CH_INFO(4, false)},
 247         {SERIES(DS1000Z), "DS1054Z", {5, 1000000000}, CH_INFO(4, false)},
 248         {SERIES(DS1000Z), "DS1074Z", {5, 1000000000}, CH_INFO(4, false)},
 249         {SERIES(DS1000Z), "DS1104Z", {5, 1000000000}, CH_INFO(4, false)},
 250         {SERIES(DS1000Z), "DS1074Z-S", {5, 1000000000}, CH_INFO(4, false)},
 251         {SERIES(DS1000Z), "DS1104Z-S", {5, 1000000000}, CH_INFO(4, false)},
 252         {SERIES(DS1000Z), "DS1074Z Plus", {5, 1000000000}, CH_INFO(4, false)},
 253         {SERIES(DS1000Z), "DS1104Z Plus", {5, 1000000000}, CH_INFO(4, false)},
 254         {SERIES(DS1000Z), "MSO1074Z", {5, 1000000000}, CH_INFO(4, true)},
 255         {SERIES(DS1000Z), "MSO1104Z", {5, 1000000000}, CH_INFO(4, true)},
 256         {SERIES(DS1000Z), "MSO1074Z-S", {5, 1000000000}, CH_INFO(4, true)},
 257         {SERIES(DS1000Z), "MSO1104Z-S", {5, 1000000000}, CH_INFO(4, true)},
 258         {SERIES(DS4000), "DS4024", {1, 1000000000}, CH_INFO(4, false)},
 259 };
 260
 261 static struct sr_dev_driver rigol_ds_driver_info;
 262
 263 static void clear_helper(struct dev_context *devc)
 264 {
 265         unsigned int i;
 266
 267         g_free(devc->data);
 268         g_free(devc->buffer);
 269         for (i = 0; i < ARRAY_SIZE(devc->coupling); i++)
 270                 g_free(devc->coupling[i]);
 271         g_free(devc->trigger_source);
 272         g_free(devc->trigger_slope);
 273         g_free(devc->analog_groups);
 274 }
 275
 276 static int dev_clear(const struct sr_dev_driver *di)
 277 {
 278         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 279 }
 280
 281 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
 282 {
 283         struct dev_context *devc;
 284         struct sr_dev_inst *sdi;
 285         struct sr_scpi_hw_info *hw_info;
 286         struct sr_channel *ch;
 287         long n[3];
 288         unsigned int i;
 289         const struct rigol_ds_model *model = NULL;
 290         gchar *channel_name, **version;
 291
 292         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
 293                 sr_info("Couldn't get IDN response, retrying.");
 294                 sr_scpi_close(scpi);
 295                 sr_scpi_open(scpi);
 296                 if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
 297                         sr_info("Couldn't get IDN response.");
 298                         return NULL;
 299                 }
 300         }
 301
 302         for (i = 0; i < ARRAY_SIZE(supported_models); i++) {
 303                 if (!g_ascii_strcasecmp(hw_info->manufacturer,
 304                                         supported_models[i].series->vendor->full_name) &&
 305                                 !strcmp(hw_info->model, supported_models[i].name)) {
 306                         model = &supported_models[i];
 307                         break;
 308                 }
 309         }
 310
 311         if (!model) {
 312                 sr_scpi_hw_info_free(hw_info);
 313                 return NULL;
 314         }
 315
 316         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 317         sdi->vendor = g_strdup(model->series->vendor->name);
 318         sdi->model = g_strdup(model->name);
 319         sdi->version = g_strdup(hw_info->firmware_version);
 320         sdi->conn = scpi;
 321         sdi->driver = &rigol_ds_driver_info;
 322         sdi->inst_type = SR_INST_SCPI;
 323         sdi->serial_num = g_strdup(hw_info->serial_number);
 324         devc = g_malloc0(sizeof(struct dev_context));
 325         devc->limit_frames = 0;
 326         devc->model = model;
 327         devc->format = model->series->format;
 328
 329         /* DS1000 models with firmware before 0.2.4 used the old data format. */
 330         if (model->series == SERIES(DS1000)) {
 331                 version = g_strsplit(hw_info->firmware_version, ".", 0);
 332                 do {
 333                         if (!version[0] || !version[1] || !version[2])
 334                                 break;
 335                         if (version[0][0] == 0 || version[1][0] == 0 || version[2][0] == 0)
 336                                 break;
 337                         for (i = 0; i < 3; i++) {
 338                                 if (sr_atol(version[i], &n[i]) != SR_OK)
 339                                         break;
 340                         }
 341                         if (i != 3)
 342                                 break;
 343                         scpi->firmware_version = n[0] * 100 + n[1] * 10 + n[2];
 344                         if (scpi->firmware_version < 24) {
 345                                 sr_dbg("Found DS1000 firmware < 0.2.4, using raw data format.");
 346                                 devc->format = FORMAT_RAW;
 347                         }
 348                         break;
 349                 } while (0);
 350                 g_strfreev(version);
 351         }
 352
 353         sr_scpi_hw_info_free(hw_info);
 354
 355         devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) *
 356                                         model->analog_channels);
 357
 358         for (i = 0; i < model->analog_channels; i++) {
 359                 channel_name = g_strdup_printf("CH%d", i + 1);
 360                 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_name);
 361
 362                 devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
 363
 364                 devc->analog_groups[i]->name = channel_name;
 365                 devc->analog_groups[i]->channels = g_slist_append(NULL, ch);
 366                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
 367                                 devc->analog_groups[i]);
 368         }
 369
 370         if (devc->model->has_digital) {
 371                 devc->digital_group = g_malloc0(sizeof(struct sr_channel_group));
 372
 373                 for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
 374                         channel_name = g_strdup_printf("D%d", i);
 375                         ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
 376                         g_free(channel_name);
 377                         devc->digital_group->channels = g_slist_append(
 378                                         devc->digital_group->channels, ch);
 379                 }
 380                 devc->digital_group->name = g_strdup("LA");
 381                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
 382                                 devc->digital_group);
 383         }
 384
 385         for (i = 0; i < ARRAY_SIZE(timebases); i++) {
 386                 if (!memcmp(&devc->model->min_timebase, &timebases[i], sizeof(uint64_t[2])))
 387                         devc->timebases = &timebases[i];
 388                 if (!memcmp(&devc->model->series->max_timebase, &timebases[i], sizeof(uint64_t[2])))
 389                         devc->num_timebases = &timebases[i] - devc->timebases + 1;
 390         }
 391
 392         for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
 393                 if (!memcmp(&devc->model->series->min_vdiv,
 394                                         &vdivs[i], sizeof(uint64_t[2]))) {
 395                         devc->vdivs = &vdivs[i];
 396                         devc->num_vdivs = ARRAY_SIZE(vdivs) - i;
 397                 }
 398         }
 399
 400         devc->buffer = g_malloc(ACQ_BUFFER_SIZE);
 401         devc->data = g_malloc(ACQ_BUFFER_SIZE * sizeof(float));
 402
 403         devc->data_source = DATA_SOURCE_LIVE;
 404
 405         sdi->priv = devc;
 406
 407         return sdi;
 408 }
 409
 410 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 411 {
 412         return sr_scpi_scan(di->context, options, probe_device);
 413 }
 414
 415 static int dev_open(struct sr_dev_inst *sdi)
 416 {
 417         int ret;
 418         struct sr_scpi_dev_inst *scpi = sdi->conn;
 419
 420         if ((ret = sr_scpi_open(scpi)) < 0) {
 421                 sr_err("Failed to open SCPI device: %s.", sr_strerror(ret));
 422                 return SR_ERR;
 423         }
 424
 425         if ((ret = rigol_ds_get_dev_cfg(sdi)) < 0) {
 426                 sr_err("Failed to get device config: %s.", sr_strerror(ret));
 427                 return SR_ERR;
 428         }
 429
 430         return SR_OK;
 431 }
 432
 433 static int dev_close(struct sr_dev_inst *sdi)
 434 {
 435         struct sr_scpi_dev_inst *scpi;
 436         struct dev_context *devc;
 437
 438         scpi = sdi->conn;
 439         devc = sdi->priv;
 440
 441         if (!scpi)
 442                 return SR_ERR_BUG;
 443
 444         if (devc->model->series->protocol == PROTOCOL_V2)
 445                 rigol_ds_config_set(sdi, ":KEY:LOCK DISABLE");
 446
 447         return sr_scpi_close(scpi);
 448 }
 449
 450 static int analog_frame_size(const struct sr_dev_inst *sdi)
 451 {
 452         struct dev_context *devc = sdi->priv;
 453         struct sr_channel *ch;
 454         int analog_channels = 0;
 455         GSList *l;
 456
 457         for (l = sdi->channels; l; l = l->next) {
 458                 ch = l->data;
 459                 if (ch->type == SR_CHANNEL_ANALOG && ch->enabled)
 460                         analog_channels++;
 461         }
 462
 463         if (analog_channels == 0)
 464                 return 0;
 465
 466         switch (devc->data_source) {
 467         case DATA_SOURCE_LIVE:
 468                 return devc->model->series->live_samples;
 469         case DATA_SOURCE_MEMORY:
 470                 return devc->model->series->buffer_samples / analog_channels;
 471         default:
 472                 return 0;
 473         }
 474 }
 475
 476 static int digital_frame_size(const struct sr_dev_inst *sdi)
 477 {
 478         struct dev_context *devc = sdi->priv;
 479
 480         switch (devc->data_source) {
 481         case DATA_SOURCE_LIVE:
 482                 return devc->model->series->live_samples * 2;
 483         case DATA_SOURCE_MEMORY:
 484                 return devc->model->series->buffer_samples * 2;
 485         default:
 486                 return 0;
 487         }
 488 }
 489
 490 static int config_get(uint32_t key, GVariant **data,
 491         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 492 {
 493         struct dev_context *devc;
 494         struct sr_channel *ch;
 495         const char *tmp_str;
 496         uint64_t samplerate;
 497         int analog_channel = -1;
 498         float smallest_diff = INFINITY;
 499         int idx = -1;
 500         unsigned i;
 501
 502         if (!sdi)
 503                 return SR_ERR_ARG;
 504
 505         devc = sdi->priv;
 506
 507         /* If a channel group is specified, it must be a valid one. */
 508         if (cg && !g_slist_find(sdi->channel_groups, cg)) {
 509                 sr_err("Invalid channel group specified.");
 510                 return SR_ERR;
 511         }
 512
 513         if (cg) {
 514                 ch = g_slist_nth_data(cg->channels, 0);
 515                 if (!ch)
 516                         return SR_ERR;
 517                 if (ch->type == SR_CHANNEL_ANALOG) {
 518                         if (ch->name[2] < '1' || ch->name[2] > '4')
 519                                 return SR_ERR;
 520                         analog_channel = ch->name[2] - '1';
 521                 }
 522         }
 523
 524         switch (key) {
 525         case SR_CONF_NUM_HDIV:
 526                 *data = g_variant_new_int32(devc->model->series->num_horizontal_divs);
 527                 break;
 528         case SR_CONF_NUM_VDIV:
 529                 *data = g_variant_new_int32(devc->num_vdivs);
 530                 break;
 531         case SR_CONF_DATA_SOURCE:
 532                 if (devc->data_source == DATA_SOURCE_LIVE)
 533                         *data = g_variant_new_string("Live");
 534                 else if (devc->data_source == DATA_SOURCE_MEMORY)
 535                         *data = g_variant_new_string("Memory");
 536                 else
 537                         *data = g_variant_new_string("Segmented");
 538                 break;
 539         case SR_CONF_SAMPLERATE:
 540                 if (devc->data_source == DATA_SOURCE_LIVE) {
 541                         samplerate = analog_frame_size(sdi) /
 542                                 (devc->timebase * devc->model->series->num_horizontal_divs);
 543                         *data = g_variant_new_uint64(samplerate);
 544                 } else {
 545                         sr_dbg("Unknown data source: %d.", devc->data_source);
 546                         return SR_ERR_NA;
 547                 }
 548                 break;
 549         case SR_CONF_TRIGGER_SOURCE:
 550                 if (!strcmp(devc->trigger_source, "ACL"))
 551                         tmp_str = "AC Line";
 552                 else if (!strcmp(devc->trigger_source, "CHAN1"))
 553                         tmp_str = "CH1";
 554                 else if (!strcmp(devc->trigger_source, "CHAN2"))
 555                         tmp_str = "CH2";
 556                 else if (!strcmp(devc->trigger_source, "CHAN3"))
 557                         tmp_str = "CH3";
 558                 else if (!strcmp(devc->trigger_source, "CHAN4"))
 559                         tmp_str = "CH4";
 560                 else
 561                         tmp_str = devc->trigger_source;
 562                 *data = g_variant_new_string(tmp_str);
 563                 break;
 564         case SR_CONF_TRIGGER_SLOPE:
 565                 if (!strncmp(devc->trigger_slope, "POS", 3)) {
 566                         tmp_str = "r";
 567                 } else if (!strncmp(devc->trigger_slope, "NEG", 3)) {
 568                         tmp_str = "f";
 569                 } else {
 570                         sr_dbg("Unknown trigger slope: '%s'.", devc->trigger_slope);
 571                         return SR_ERR_NA;
 572                 }
 573                 *data = g_variant_new_string(tmp_str);
 574                 break;
 575         case SR_CONF_TRIGGER_LEVEL:
 576                 *data = g_variant_new_double(devc->trigger_level);
 577                 break;
 578         case SR_CONF_TIMEBASE:
 579                 for (i = 0; i < devc->num_timebases; i++) {
 580                         float tb = (float)devc->timebases[i][0] / devc->timebases[i][1];
 581                         float diff = fabs(devc->timebase - tb);
 582                         if (diff < smallest_diff) {
 583                                 smallest_diff = diff;
 584                                 idx = i;
 585                         }
 586                 }
 587                 if (idx < 0) {
 588                         sr_dbg("Negative timebase index: %d.", idx);
 589                         return SR_ERR_NA;
 590                 }
 591                 *data = g_variant_new("(tt)", devc->timebases[idx][0],
 592                                               devc->timebases[idx][1]);
 593                 break;
 594         case SR_CONF_VDIV:
 595                 if (analog_channel < 0) {
 596                         sr_dbg("Negative analog channel: %d.", analog_channel);
 597                         return SR_ERR_NA;
 598                 }
 599                 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
 600                         float vdiv = (float)vdivs[i][0] / vdivs[i][1];
 601                         float diff = fabs(devc->vdiv[analog_channel] - vdiv);
 602                         if (diff < smallest_diff) {
 603                                 smallest_diff = diff;
 604                                 idx = i;
 605                         }
 606                 }
 607                 if (idx < 0) {
 608                         sr_dbg("Negative vdiv index: %d.", idx);
 609                         return SR_ERR_NA;
 610                 }
 611                 *data = g_variant_new("(tt)", vdivs[idx][0], vdivs[idx][1]);
 612                 break;
 613         case SR_CONF_COUPLING:
 614                 if (analog_channel < 0) {
 615                         sr_dbg("Negative analog channel: %d.", analog_channel);
 616                         return SR_ERR_NA;
 617                 }
 618                 *data = g_variant_new_string(devc->coupling[analog_channel]);
 619                 break;
 620         case SR_CONF_PROBE_FACTOR:
 621                 if (analog_channel < 0) {
 622                         sr_dbg("Negative analog channel: %d.", analog_channel);
 623                         return SR_ERR_NA;
 624                 }
 625                 *data = g_variant_new_uint64(devc->attenuation[analog_channel]);
 626                 break;
 627         default:
 628                 return SR_ERR_NA;
 629         }
 630
 631         return SR_OK;
 632 }
 633
 634 static int config_set(uint32_t key, GVariant *data,
 635         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 636 {
 637         struct dev_context *devc;
 638         uint64_t p;
 639         double t_dbl;
 640         int ret, idx, i;
 641         const char *tmp_str;
 642         char buffer[16];
 643
 644         devc = sdi->priv;
 645
 646         /* If a channel group is specified, it must be a valid one. */
 647         if (cg && !g_slist_find(sdi->channel_groups, cg)) {
 648                 sr_err("Invalid channel group specified.");
 649                 return SR_ERR;
 650         }
 651
 652         switch (key) {
 653         case SR_CONF_LIMIT_FRAMES:
 654                 devc->limit_frames = g_variant_get_uint64(data);
 655                 break;
 656         case SR_CONF_TRIGGER_SLOPE:
 657                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0)
 658                         return SR_ERR_ARG;
 659                 g_free(devc->trigger_slope);
 660                 devc->trigger_slope = g_strdup((trigger_slopes[idx][0] == 'r') ? "POS" : "NEG");
 661                 return rigol_ds_config_set(sdi, ":TRIG:EDGE:SLOP %s", devc->trigger_slope);
 662         case SR_CONF_HORIZ_TRIGGERPOS:
 663                 t_dbl = g_variant_get_double(data);
 664                 if (t_dbl < 0.0 || t_dbl > 1.0) {
 665                         sr_err("Invalid horiz. trigger position: %g.", t_dbl);
 666                         return SR_ERR;
 667                 }
 668                 devc->horiz_triggerpos = t_dbl;
 669                 /* We have the trigger offset as a percentage of the frame, but
 670                  * need to express this in seconds. */
 671                 t_dbl = -(devc->horiz_triggerpos - 0.5) * devc->timebase * devc->num_timebases;
 672                 g_ascii_formatd(buffer, sizeof(buffer), "%.6f", t_dbl);
 673                 return rigol_ds_config_set(sdi, ":TIM:OFFS %s", buffer);
 674         case SR_CONF_TRIGGER_LEVEL:
 675                 t_dbl = g_variant_get_double(data);
 676                 g_ascii_formatd(buffer, sizeof(buffer), "%.3f", t_dbl);
 677                 ret = rigol_ds_config_set(sdi, ":TRIG:EDGE:LEV %s", buffer);
 678                 if (ret == SR_OK)
 679                         devc->trigger_level = t_dbl;
 680                 return ret;
 681         case SR_CONF_TIMEBASE:
 682                 if ((idx = std_u64_tuple_idx(data, devc->timebases, devc->num_timebases)) < 0)
 683                         return SR_ERR_ARG;
 684                 devc->timebase = (float)devc->timebases[idx][0] / devc->timebases[idx][1];
 685                 g_ascii_formatd(buffer, sizeof(buffer), "%.9f",
 686                                 devc->timebase);
 687                 return rigol_ds_config_set(sdi, ":TIM:SCAL %s", buffer);
 688         case SR_CONF_TRIGGER_SOURCE:
 689                 if ((idx = std_str_idx(data, devc->model->trigger_sources, devc->model->num_trigger_sources)) < 0)
 690                         return SR_ERR_ARG;
 691                 g_free(devc->trigger_source);
 692                 devc->trigger_source = g_strdup(devc->model->trigger_sources[idx]);
 693                 if (!strcmp(devc->trigger_source, "AC Line"))
 694                         tmp_str = "ACL";
 695                 else if (!strcmp(devc->trigger_source, "CH1"))
 696                         tmp_str = "CHAN1";
 697                 else if (!strcmp(devc->trigger_source, "CH2"))
 698                         tmp_str = "CHAN2";
 699                 else if (!strcmp(devc->trigger_source, "CH3"))
 700                         tmp_str = "CHAN3";
 701                 else if (!strcmp(devc->trigger_source, "CH4"))
 702                         tmp_str = "CHAN4";
 703                 else
 704                         tmp_str = (char *)devc->trigger_source;
 705                 return rigol_ds_config_set(sdi, ":TRIG:EDGE:SOUR %s", tmp_str);
 706         case SR_CONF_VDIV:
 707                 if (!cg)
 708                         return SR_ERR_CHANNEL_GROUP;
 709                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 710                         return SR_ERR_ARG;
 711                 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
 712                         return SR_ERR_ARG;
 713                 devc->vdiv[i] = (float)vdivs[idx][0] / vdivs[idx][1];
 714                 g_ascii_formatd(buffer, sizeof(buffer), "%.3f", devc->vdiv[i]);
 715                 return rigol_ds_config_set(sdi, ":CHAN%d:SCAL %s", i + 1, buffer);
 716         case SR_CONF_COUPLING:
 717                 if (!cg)
 718                         return SR_ERR_CHANNEL_GROUP;
 719                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 720                         return SR_ERR_ARG;
 721                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
 722                         return SR_ERR_ARG;
 723                 g_free(devc->coupling[i]);
 724                 devc->coupling[i] = g_strdup(coupling[idx]);
 725                 return rigol_ds_config_set(sdi, ":CHAN%d:COUP %s", i + 1, devc->coupling[i]);
 726         case SR_CONF_PROBE_FACTOR:
 727                 if (!cg)
 728                         return SR_ERR_CHANNEL_GROUP;
 729                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 730                         return SR_ERR_ARG;
 731                 if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(probe_factor))) < 0)
 732                         return SR_ERR_ARG;
 733                 p = g_variant_get_uint64(data);
 734                 devc->attenuation[i] = probe_factor[idx];
 735                 ret = rigol_ds_config_set(sdi, ":CHAN%d:PROB %"PRIu64, i + 1, p);
 736                 if (ret == SR_OK)
 737                         rigol_ds_get_dev_cfg_vertical(sdi);
 738                 return ret;
 739         case SR_CONF_DATA_SOURCE:
 740                 tmp_str = g_variant_get_string(data, NULL);
 741                 if (!strcmp(tmp_str, "Live"))
 742                         devc->data_source = DATA_SOURCE_LIVE;
 743                 else if (devc->model->series->protocol >= PROTOCOL_V2
 744                         && !strcmp(tmp_str, "Memory"))
 745                         devc->data_source = DATA_SOURCE_MEMORY;
 746                 else if (devc->model->series->protocol >= PROTOCOL_V3
 747                          && !strcmp(tmp_str, "Segmented"))
 748                         devc->data_source = DATA_SOURCE_SEGMENTED;
 749                 else {
 750                         sr_err("Unknown data source: '%s'.", tmp_str);
 751                         return SR_ERR;
 752                 }
 753                 break;
 754         default:
 755                 return SR_ERR_NA;
 756         }
 757
 758         return SR_OK;
 759 }
 760
 761 static int config_list(uint32_t key, GVariant **data,
 762         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 763 {
 764         struct dev_context *devc;
 765
 766         devc = (sdi) ? sdi->priv : NULL;
 767
 768         switch (key) {
 769         case SR_CONF_SCAN_OPTIONS:
 770         case SR_CONF_DEVICE_OPTIONS:
 771                 if (!cg)
 772                         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 773                 if (!devc)
 774                         return SR_ERR_ARG;
 775                 if (cg == devc->digital_group) {
 776                         *data = std_gvar_array_u32(NULL, 0);
 777                         return SR_OK;
 778                 } else {
 779                         if (std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels) < 0)
 780                                 return SR_ERR_ARG;
 781                         *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog));
 782                         return SR_OK;
 783                 }
 784                 break;
 785         case SR_CONF_COUPLING:
 786                 if (!cg)
 787                         return SR_ERR_CHANNEL_GROUP;
 788                 *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling));
 789                 break;
 790         case SR_CONF_PROBE_FACTOR:
 791                 if (!cg)
 792                         return SR_ERR_CHANNEL_GROUP;
 793                 *data = std_gvar_array_u64(ARRAY_AND_SIZE(probe_factor));
 794                 break;
 795         case SR_CONF_VDIV:
 796                 if (!devc)
 797                         /* Can't know this until we have the exact model. */
 798                         return SR_ERR_ARG;
 799                 if (!cg)
 800                         return SR_ERR_CHANNEL_GROUP;
 801                 *data = std_gvar_tuple_array(devc->vdivs, devc->num_vdivs);
 802                 break;
 803         case SR_CONF_TIMEBASE:
 804                 if (!devc)
 805                         /* Can't know this until we have the exact model. */
 806                         return SR_ERR_ARG;
 807                 if (devc->num_timebases <= 0)
 808                         return SR_ERR_NA;
 809                 *data = std_gvar_tuple_array(devc->timebases, devc->num_timebases);
 810                 break;
 811         case SR_CONF_TRIGGER_SOURCE:
 812                 if (!devc)
 813                         /* Can't know this until we have the exact model. */
 814                         return SR_ERR_ARG;
 815                 *data = g_variant_new_strv(devc->model->trigger_sources, devc->model->num_trigger_sources);
 816                 break;
 817         case SR_CONF_TRIGGER_SLOPE:
 818                 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
 819                 break;
 820         case SR_CONF_DATA_SOURCE:
 821                 if (!devc)
 822                         /* Can't know this until we have the exact model. */
 823                         return SR_ERR_ARG;
 824                 switch (devc->model->series->protocol) {
 825                 case PROTOCOL_V1:
 826                         *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources) - 2);
 827                         break;
 828                 case PROTOCOL_V2:
 829                         *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources) - 1);
 830                         break;
 831                 default:
 832                         *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
 833                         break;
 834                 }
 835                 break;
 836         default:
 837                 return SR_ERR_NA;
 838         }
 839
 840         return SR_OK;
 841 }
 842
 843 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 844 {
 845         struct sr_scpi_dev_inst *scpi;
 846         struct dev_context *devc;
 847         struct sr_channel *ch;
 848         struct sr_datafeed_packet packet;
 849         gboolean some_digital;
 850         GSList *l;
 851
 852         scpi = sdi->conn;
 853         devc = sdi->priv;
 854
 855         devc->num_frames = 0;
 856
 857         some_digital = FALSE;
 858         for (l = sdi->channels; l; l = l->next) {
 859                 ch = l->data;
 860                 sr_dbg("handling channel %s", ch->name);
 861                 if (ch->type == SR_CHANNEL_ANALOG) {
 862                         if (ch->enabled)
 863                                 devc->enabled_channels = g_slist_append(
 864                                                 devc->enabled_channels, ch);
 865                         if (ch->enabled != devc->analog_channels[ch->index]) {
 866                                 /* Enabled channel is currently disabled, or vice versa. */
 867                                 if (rigol_ds_config_set(sdi, ":CHAN%d:DISP %s", ch->index + 1,
 868                                                 ch->enabled ? "ON" : "OFF") != SR_OK)
 869                                         return SR_ERR;
 870                                 devc->analog_channels[ch->index] = ch->enabled;
 871                         }
 872                 } else if (ch->type == SR_CHANNEL_LOGIC) {
 873                         /* Only one list entry for older protocols. All channels are
 874                          * retrieved together when this entry is processed. */
 875                         if (ch->enabled && (
 876                                                 devc->model->series->protocol > PROTOCOL_V3 ||
 877                                                 !some_digital))
 878                                 devc->enabled_channels = g_slist_append(
 879                                                 devc->enabled_channels, ch);
 880                         if (ch->enabled) {
 881                                 some_digital = TRUE;
 882                                 /* Turn on LA module if currently off. */
 883                                 if (!devc->la_enabled) {
 884                                         if (rigol_ds_config_set(sdi,
 885                                                         devc->model->series->protocol >= PROTOCOL_V3 ?
 886                                                                 ":LA:STAT ON" : ":LA:DISP ON") != SR_OK)
 887                                                 return SR_ERR;
 888                                         devc->la_enabled = TRUE;
 889                                 }
 890                         }
 891                         if (ch->enabled != devc->digital_channels[ch->index]) {
 892                                 /* Enabled channel is currently disabled, or vice versa. */
 893                                 if (rigol_ds_config_set(sdi,
 894                                                 devc->model->series->protocol >= PROTOCOL_V3 ?
 895                                                         ":LA:DIG%d:DISP %s" : ":DIG%d:TURN %s", ch->index,
 896                                                 ch->enabled ? "ON" : "OFF") != SR_OK)
 897                                         return SR_ERR;
 898                                 devc->digital_channels[ch->index] = ch->enabled;
 899                         }
 900                 }
 901         }
 902
 903         if (!devc->enabled_channels)
 904                 return SR_ERR;
 905
 906         /* Turn off LA module if on and no digital channels selected. */
 907         if (devc->la_enabled && !some_digital)
 908                 if (rigol_ds_config_set(sdi,
 909                                 devc->model->series->protocol >= PROTOCOL_V3 ?
 910                                         ":LA:STAT OFF" : ":LA:DISP OFF") != SR_OK)
 911                         return SR_ERR;
 912
 913         /* Set memory mode. */
 914         if (devc->data_source == DATA_SOURCE_SEGMENTED) {
 915                 sr_err("Data source 'Segmented' not yet supported");
 916                 return SR_ERR;
 917         }
 918
 919         devc->analog_frame_size = analog_frame_size(sdi);
 920         devc->digital_frame_size = digital_frame_size(sdi);
 921
 922         switch (devc->model->series->protocol) {
 923         case PROTOCOL_V2:
 924                 if (rigol_ds_config_set(sdi, ":ACQ:MEMD LONG") != SR_OK)
 925                         return SR_ERR;
 926                 break;
 927         case PROTOCOL_V3:
 928                 /* Apparently for the DS2000 the memory
 929                  * depth can only be set in Running state -
 930                  * this matches the behaviour of the UI. */
 931                 if (rigol_ds_config_set(sdi, ":RUN") != SR_OK)
 932                         return SR_ERR;
 933                 if (rigol_ds_config_set(sdi, ":ACQ:MDEP %d",
 934                                         devc->analog_frame_size) != SR_OK)
 935                         return SR_ERR;
 936                 if (rigol_ds_config_set(sdi, ":STOP") != SR_OK)
 937                         return SR_ERR;
 938                 break;
 939         default:
 940                 break;
 941         }
 942
 943         if (devc->data_source == DATA_SOURCE_LIVE)
 944                 if (rigol_ds_config_set(sdi, ":RUN") != SR_OK)
 945                         return SR_ERR;
 946
 947         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
 948                         rigol_ds_receive, (void *)sdi);
 949
 950         std_session_send_df_header(sdi);
 951
 952         devc->channel_entry = devc->enabled_channels;
 953
 954         if (rigol_ds_capture_start(sdi) != SR_OK)
 955                 return SR_ERR;
 956
 957         /* Start of first frame. */
 958         packet.type = SR_DF_FRAME_BEGIN;
 959         sr_session_send(sdi, &packet);
 960
 961         return SR_OK;
 962 }
 963
 964 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 965 {
 966         struct dev_context *devc;
 967         struct sr_scpi_dev_inst *scpi;
 968
 969         devc = sdi->priv;
 970
 971         std_session_send_df_end(sdi);
 972
 973         g_slist_free(devc->enabled_channels);
 974         devc->enabled_channels = NULL;
 975         scpi = sdi->conn;
 976         sr_scpi_source_remove(sdi->session, scpi);
 977
 978         return SR_OK;
 979 }
 980
 981 static struct sr_dev_driver rigol_ds_driver_info = {
 982         .name = "rigol-ds",
 983         .longname = "Rigol DS",
 984         .api_version = 1,
 985         .init = std_init,
 986         .cleanup = std_cleanup,
 987         .scan = scan,
 988         .dev_list = std_dev_list,
 989         .dev_clear = dev_clear,
 990         .config_get = config_get,
 991         .config_set = config_set,
 992         .config_list = config_list,
 993         .dev_open = dev_open,
 994         .dev_close = dev_close,
 995         .dev_acquisition_start = dev_acquisition_start,
 996         .dev_acquisition_stop = dev_acquisition_stop,
 997         .context = NULL,
 998 };
 999 SR_REGISTER_DEV_DRIVER(rigol_ds_driver_info);