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_GET | 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 static const struct rigol_ds_command std_cmd[] = {
 163         { CMD_GET_HORIZ_TRIGGERPOS, ":TIM:OFFS?" },
 164         { CMD_SET_HORIZ_TRIGGERPOS, ":TIM:OFFS %s" },
 165 };
 166
 167 static const struct rigol_ds_command mso7000a_cmd[] = {
 168         { CMD_GET_HORIZ_TRIGGERPOS, ":TIM:POS?" },
 169         { CMD_SET_HORIZ_TRIGGERPOS, ":TIM:POS %s" },
 170 };
 171
 172 enum vendor {
 173         RIGOL,
 174         AGILENT,
 175 };
 176
 177 enum series {
 178         VS5000,
 179         DS1000,
 180         DS2000,
 181         DS2000A,
 182         DSO1000,
 183         DSO1000B,
 184         DS1000Z,
 185         DS4000,
 186         MSO5000,
 187         MSO7000A,
 188 };
 189
 190 /* short name, full name */
 191 static const struct rigol_ds_vendor supported_vendors[] = {
 192         [RIGOL] = {"Rigol", "Rigol Technologies"},
 193         [AGILENT] = {"Agilent", "Agilent Technologies"},
 194 };
 195
 196 #define VENDOR(x) &supported_vendors[x]
 197 /* vendor, series/name, protocol, data format, max timebase, min vdiv,
 198  * number of horizontal divs, live waveform samples, memory buffer samples */
 199 static const struct rigol_ds_series supported_series[] = {
 200         [VS5000] = {VENDOR(RIGOL), "VS5000", PROTOCOL_V1, FORMAT_RAW,
 201                 {50, 1}, {2, 1000}, 14, 2048, 0},
 202         [DS1000] = {VENDOR(RIGOL), "DS1000", PROTOCOL_V2, FORMAT_IEEE488_2,
 203                 {50, 1}, {2, 1000}, 12, 600, 1048576},
 204         [DS2000] = {VENDOR(RIGOL), "DS2000", PROTOCOL_V3, FORMAT_IEEE488_2,
 205                 {500, 1}, {500, 1000000}, 14, 1400, 14000},
 206         [DS2000A] = {VENDOR(RIGOL), "DS2000A", PROTOCOL_V3, FORMAT_IEEE488_2,
 207                 {1000, 1}, {500, 1000000}, 14, 1400, 14000},
 208         [DSO1000] = {VENDOR(AGILENT), "DSO1000", PROTOCOL_V3, FORMAT_IEEE488_2,
 209                 {50, 1}, {2, 1000}, 12, 600, 20480},
 210         [DSO1000B] = {VENDOR(AGILENT), "DSO1000", PROTOCOL_V3, FORMAT_IEEE488_2,
 211                 {50, 1}, {2, 1000}, 12, 600, 20480},
 212         [DS1000Z] = {VENDOR(RIGOL), "DS1000Z", PROTOCOL_V4, FORMAT_IEEE488_2,
 213                 {50, 1}, {1, 1000}, 12, 1200, 12000000},
 214         [DS4000] = {VENDOR(RIGOL), "DS4000", PROTOCOL_V4, FORMAT_IEEE488_2,
 215                 {1000, 1}, {1, 1000}, 14, 1400, 0},
 216         [MSO5000] = {VENDOR(RIGOL), "MSO5000", PROTOCOL_V5, FORMAT_IEEE488_2,
 217                 {1000, 1}, {500, 1000000}, 10, 1000, 0},
 218         [MSO7000A] = {VENDOR(AGILENT), "MSO7000A", PROTOCOL_V4, FORMAT_IEEE488_2,
 219                 {50, 1}, {2, 1000}, 10, 1000, 8000000},
 220 };
 221
 222 #define SERIES(x) &supported_series[x]
 223 /*
 224  * Use a macro to select the correct list of trigger sources and its length
 225  * based on the number of analog channels and presence of digital channels.
 226  */
 227 #define CH_INFO(num, digital) \
 228         num, digital, trigger_sources_##num##_chans, \
 229         digital ? ARRAY_SIZE(trigger_sources_##num##_chans) : (num + 2)
 230 /* series, model, min timebase, analog channels, digital */
 231 static const struct rigol_ds_model supported_models[] = {
 232         {SERIES(VS5000), "VS5022", {20, 1000000000}, CH_INFO(2, false), std_cmd},
 233         {SERIES(VS5000), "VS5042", {10, 1000000000}, CH_INFO(2, false), std_cmd},
 234         {SERIES(VS5000), "VS5062", {5, 1000000000}, CH_INFO(2, false), std_cmd},
 235         {SERIES(VS5000), "VS5102", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 236         {SERIES(VS5000), "VS5202", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 237         {SERIES(VS5000), "VS5022D", {20, 1000000000}, CH_INFO(2, true), std_cmd},
 238         {SERIES(VS5000), "VS5042D", {10, 1000000000}, CH_INFO(2, true), std_cmd},
 239         {SERIES(VS5000), "VS5062D", {5, 1000000000}, CH_INFO(2, true), std_cmd},
 240         {SERIES(VS5000), "VS5102D", {2, 1000000000}, CH_INFO(2, true), std_cmd},
 241         {SERIES(VS5000), "VS5202D", {2, 1000000000}, CH_INFO(2, true), std_cmd},
 242         {SERIES(DS1000), "DS1052E", {5, 1000000000}, CH_INFO(2, false), std_cmd},
 243         {SERIES(DS1000), "DS1102E", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 244         {SERIES(DS1000), "DS1152E", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 245         {SERIES(DS1000), "DS1152E-EDU", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 246         {SERIES(DS1000), "DS1052D", {5, 1000000000}, CH_INFO(2, true), std_cmd},
 247         {SERIES(DS1000), "DS1102D", {2, 1000000000}, CH_INFO(2, true), std_cmd},
 248         {SERIES(DS1000), "DS1152D", {2, 1000000000}, CH_INFO(2, true), std_cmd},
 249         {SERIES(DS2000), "DS2072", {5, 1000000000}, CH_INFO(2, false), std_cmd},
 250         {SERIES(DS2000), "DS2102", {5, 1000000000}, CH_INFO(2, false), std_cmd},
 251         {SERIES(DS2000), "DS2202", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 252         {SERIES(DS2000), "DS2302", {1, 1000000000}, CH_INFO(2, false), std_cmd},
 253         {SERIES(DS2000A), "DS2072A", {5, 1000000000}, CH_INFO(2, false), std_cmd},
 254         {SERIES(DS2000A), "DS2102A", {5, 1000000000}, CH_INFO(2, false), std_cmd},
 255         {SERIES(DS2000A), "DS2202A", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 256         {SERIES(DS2000A), "DS2302A", {1, 1000000000}, CH_INFO(2, false), std_cmd},
 257         {SERIES(DS2000A), "MSO2072A", {5, 1000000000}, CH_INFO(2, true), std_cmd},
 258         {SERIES(DS2000A), "MSO2102A", {5, 1000000000}, CH_INFO(2, true), std_cmd},
 259         {SERIES(DS2000A), "MSO2202A", {2, 1000000000}, CH_INFO(2, true), std_cmd},
 260         {SERIES(DS2000A), "MSO2302A", {1, 1000000000}, CH_INFO(2, true), std_cmd},
 261         {SERIES(DSO1000), "DSO1002A", {5, 1000000000}, CH_INFO(2, false), std_cmd},
 262         {SERIES(DSO1000), "DSO1004A", {5, 1000000000}, CH_INFO(4, false), std_cmd},
 263         {SERIES(DSO1000), "DSO1012A", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 264         {SERIES(DSO1000), "DSO1014A", {2, 1000000000}, CH_INFO(4, false), std_cmd},
 265         {SERIES(DSO1000), "DSO1022A", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 266         {SERIES(DSO1000), "DSO1024A", {2, 1000000000}, CH_INFO(4, false), std_cmd},
 267         {SERIES(DSO1000B), "DSO1052B", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 268         {SERIES(DSO1000B), "DSO1072B", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 269         {SERIES(DSO1000B), "DSO1102B", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 270         {SERIES(DSO1000B), "DSO1152B", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 271         {SERIES(DS1000Z), "DS1054Z", {5, 1000000000}, CH_INFO(4, false), std_cmd},
 272         {SERIES(DS1000Z), "DS1074Z", {5, 1000000000}, CH_INFO(4, false), std_cmd},
 273         {SERIES(DS1000Z), "DS1104Z", {5, 1000000000}, CH_INFO(4, false), std_cmd},
 274         {SERIES(DS1000Z), "DS1074Z-S", {5, 1000000000}, CH_INFO(4, false), std_cmd},
 275         {SERIES(DS1000Z), "DS1104Z-S", {5, 1000000000}, CH_INFO(4, false), std_cmd},
 276         {SERIES(DS1000Z), "DS1074Z Plus", {5, 1000000000}, CH_INFO(4, false), std_cmd},
 277         {SERIES(DS1000Z), "DS1104Z Plus", {5, 1000000000}, CH_INFO(4, false), std_cmd},
 278         {SERIES(DS1000Z), "DS1202Z-E", {2, 1000000000}, CH_INFO(2, false), std_cmd},
 279         {SERIES(DS1000Z), "MSO1074Z", {5, 1000000000}, CH_INFO(4, true), std_cmd},
 280         {SERIES(DS1000Z), "MSO1104Z", {5, 1000000000}, CH_INFO(4, true), std_cmd},
 281         {SERIES(DS1000Z), "MSO1074Z-S", {5, 1000000000}, CH_INFO(4, true), std_cmd},
 282         {SERIES(DS1000Z), "MSO1104Z-S", {5, 1000000000}, CH_INFO(4, true), std_cmd},
 283         {SERIES(DS4000), "DS4024", {1, 1000000000}, CH_INFO(4, false), std_cmd},
 284         {SERIES(MSO5000), "MSO5072", {1, 1000000000}, CH_INFO(2, true), std_cmd},
 285         {SERIES(MSO5000), "MSO5074", {1, 1000000000}, CH_INFO(4, true), std_cmd},
 286         {SERIES(MSO5000), "MSO5102", {1, 1000000000}, CH_INFO(2, true), std_cmd},
 287         {SERIES(MSO5000), "MSO5104", {1, 1000000000}, CH_INFO(4, true), std_cmd},
 288         {SERIES(MSO5000), "MSO5204", {1, 1000000000}, CH_INFO(4, true), std_cmd},
 289         {SERIES(MSO5000), "MSO5354", {1, 1000000000}, CH_INFO(4, true), std_cmd},
 290         /* TODO: Digital channels are not yet supported on MSO7000A. */
 291         {SERIES(MSO7000A), "MSO7034A", {2, 1000000000}, CH_INFO(4, false), mso7000a_cmd},
 292 };
 293
 294 static struct sr_dev_driver rigol_ds_driver_info;
 295
 296 static int analog_frame_size(const struct sr_dev_inst *);
 297
 298 static void clear_helper(struct dev_context *devc)
 299 {
 300         unsigned int i;
 301
 302         g_free(devc->data);
 303         g_free(devc->buffer);
 304         for (i = 0; i < ARRAY_SIZE(devc->coupling); i++)
 305                 g_free(devc->coupling[i]);
 306         g_free(devc->trigger_source);
 307         g_free(devc->trigger_slope);
 308         g_free(devc->analog_groups);
 309 }
 310
 311 static int dev_clear(const struct sr_dev_driver *di)
 312 {
 313         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 314 }
 315
 316 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
 317 {
 318         struct dev_context *devc;
 319         struct sr_dev_inst *sdi;
 320         struct sr_scpi_hw_info *hw_info;
 321         struct sr_channel *ch;
 322         long n[3];
 323         unsigned int i;
 324         const struct rigol_ds_model *model = NULL;
 325         gchar *channel_name, **version;
 326
 327         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
 328                 sr_info("Couldn't get IDN response, retrying.");
 329                 sr_scpi_close(scpi);
 330                 sr_scpi_open(scpi);
 331                 if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
 332                         sr_info("Couldn't get IDN response.");
 333                         return NULL;
 334                 }
 335         }
 336
 337         for (i = 0; i < ARRAY_SIZE(supported_models); i++) {
 338                 if (!g_ascii_strcasecmp(hw_info->manufacturer,
 339                                         supported_models[i].series->vendor->full_name) &&
 340                                 !strcmp(hw_info->model, supported_models[i].name)) {
 341                         model = &supported_models[i];
 342                         break;
 343                 }
 344         }
 345
 346         if (!model) {
 347                 sr_scpi_hw_info_free(hw_info);
 348                 return NULL;
 349         }
 350
 351         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 352         sdi->vendor = g_strdup(model->series->vendor->name);
 353         sdi->model = g_strdup(model->name);
 354         sdi->version = g_strdup(hw_info->firmware_version);
 355         sdi->conn = scpi;
 356         sdi->driver = &rigol_ds_driver_info;
 357         sdi->inst_type = SR_INST_SCPI;
 358         sdi->serial_num = g_strdup(hw_info->serial_number);
 359         devc = g_malloc0(sizeof(struct dev_context));
 360         devc->limit_frames = 0;
 361         devc->model = model;
 362         devc->format = model->series->format;
 363
 364         /* DS1000 models with firmware before 0.2.4 used the old data format. */
 365         if (model->series == SERIES(DS1000)) {
 366                 version = g_strsplit(hw_info->firmware_version, ".", 0);
 367                 do {
 368                         if (!version[0] || !version[1] || !version[2])
 369                                 break;
 370                         if (version[0][0] == 0 || version[1][0] == 0 || version[2][0] == 0)
 371                                 break;
 372                         for (i = 0; i < 3; i++) {
 373                                 if (sr_atol(version[i], &n[i]) != SR_OK)
 374                                         break;
 375                         }
 376                         if (i != 3)
 377                                 break;
 378                         scpi->firmware_version = n[0] * 100 + n[1] * 10 + n[2];
 379                         if (scpi->firmware_version < 24) {
 380                                 sr_dbg("Found DS1000 firmware < 0.2.4, using raw data format.");
 381                                 devc->format = FORMAT_RAW;
 382                         }
 383                         break;
 384                 } while (0);
 385                 g_strfreev(version);
 386         }
 387
 388         sr_scpi_hw_info_free(hw_info);
 389
 390         devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) *
 391                                         model->analog_channels);
 392
 393         for (i = 0; i < model->analog_channels; i++) {
 394                 channel_name = g_strdup_printf("CH%d", i + 1);
 395                 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_name);
 396
 397                 devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
 398
 399                 devc->analog_groups[i]->name = channel_name;
 400                 devc->analog_groups[i]->channels = g_slist_append(NULL, ch);
 401                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
 402                                 devc->analog_groups[i]);
 403         }
 404
 405         if (devc->model->has_digital) {
 406                 devc->digital_group = g_malloc0(sizeof(struct sr_channel_group));
 407
 408                 for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
 409                         channel_name = g_strdup_printf("D%d", i);
 410                         ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
 411                         g_free(channel_name);
 412                         devc->digital_group->channels = g_slist_append(
 413                                         devc->digital_group->channels, ch);
 414                 }
 415                 devc->digital_group->name = g_strdup("LA");
 416                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
 417                                 devc->digital_group);
 418         }
 419
 420         for (i = 0; i < ARRAY_SIZE(timebases); i++) {
 421                 if (!memcmp(&devc->model->min_timebase, &timebases[i], sizeof(uint64_t[2])))
 422                         devc->timebases = &timebases[i];
 423                 if (!memcmp(&devc->model->series->max_timebase, &timebases[i], sizeof(uint64_t[2])))
 424                         devc->num_timebases = &timebases[i] - devc->timebases + 1;
 425         }
 426
 427         for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
 428                 if (!memcmp(&devc->model->series->min_vdiv,
 429                                         &vdivs[i], sizeof(uint64_t[2]))) {
 430                         devc->vdivs = &vdivs[i];
 431                         devc->num_vdivs = ARRAY_SIZE(vdivs) - i;
 432                 }
 433         }
 434
 435         devc->buffer = g_malloc(ACQ_BUFFER_SIZE);
 436         devc->data = g_malloc(ACQ_BUFFER_SIZE * sizeof(float));
 437
 438         devc->data_source = DATA_SOURCE_LIVE;
 439
 440         sdi->priv = devc;
 441
 442         return sdi;
 443 }
 444
 445 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 446 {
 447         return sr_scpi_scan(di->context, options, probe_device);
 448 }
 449
 450 static int dev_open(struct sr_dev_inst *sdi)
 451 {
 452         int ret;
 453         struct sr_scpi_dev_inst *scpi = sdi->conn;
 454
 455         if ((ret = sr_scpi_open(scpi)) < 0) {
 456                 sr_err("Failed to open SCPI device: %s.", sr_strerror(ret));
 457                 return SR_ERR;
 458         }
 459
 460         if ((ret = rigol_ds_get_dev_cfg(sdi)) < 0) {
 461                 sr_err("Failed to get device config: %s.", sr_strerror(ret));
 462                 return SR_ERR;
 463         }
 464
 465         return SR_OK;
 466 }
 467
 468 static int dev_close(struct sr_dev_inst *sdi)
 469 {
 470         struct sr_scpi_dev_inst *scpi;
 471         struct dev_context *devc;
 472
 473         scpi = sdi->conn;
 474         devc = sdi->priv;
 475
 476         if (!scpi)
 477                 return SR_ERR_BUG;
 478
 479         if (devc->model->series->protocol == PROTOCOL_V2)
 480                 rigol_ds_config_set(sdi, ":KEY:LOCK DISABLE");
 481
 482         return sr_scpi_close(scpi);
 483 }
 484
 485 static int analog_frame_size(const struct sr_dev_inst *sdi)
 486 {
 487         struct dev_context *devc = sdi->priv;
 488         struct sr_channel *ch;
 489         int analog_channels = 0;
 490         GSList *l;
 491
 492         for (l = sdi->channels; l; l = l->next) {
 493                 ch = l->data;
 494                 if (ch->type == SR_CHANNEL_ANALOG && ch->enabled)
 495                         analog_channels++;
 496         }
 497
 498         if (analog_channels == 0)
 499                 return 0;
 500
 501         switch (devc->data_source) {
 502         case DATA_SOURCE_LIVE:
 503                 return devc->model->series->live_samples;
 504         case DATA_SOURCE_MEMORY:
 505         case DATA_SOURCE_SEGMENTED:
 506                 return devc->model->series->buffer_samples / analog_channels;
 507         default:
 508                 return 0;
 509         }
 510 }
 511
 512 static int digital_frame_size(const struct sr_dev_inst *sdi)
 513 {
 514         struct dev_context *devc = sdi->priv;
 515
 516         switch (devc->data_source) {
 517         case DATA_SOURCE_LIVE:
 518                 return devc->model->series->live_samples * 2;
 519         case DATA_SOURCE_MEMORY:
 520         case DATA_SOURCE_SEGMENTED:
 521                 return devc->model->series->buffer_samples * 2;
 522         default:
 523                 return 0;
 524         }
 525 }
 526
 527 static int config_get(uint32_t key, GVariant **data,
 528         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 529 {
 530         struct dev_context *devc;
 531         struct sr_channel *ch;
 532         const char *tmp_str;
 533         int analog_channel = -1;
 534         float smallest_diff = INFINITY;
 535         int idx = -1;
 536         unsigned i;
 537
 538         if (!sdi)
 539                 return SR_ERR_ARG;
 540
 541         devc = sdi->priv;
 542
 543         /* If a channel group is specified, it must be a valid one. */
 544         if (cg && !g_slist_find(sdi->channel_groups, cg)) {
 545                 sr_err("Invalid channel group specified.");
 546                 return SR_ERR;
 547         }
 548
 549         if (cg) {
 550                 ch = g_slist_nth_data(cg->channels, 0);
 551                 if (!ch)
 552                         return SR_ERR;
 553                 if (ch->type == SR_CHANNEL_ANALOG) {
 554                         if (ch->name[2] < '1' || ch->name[2] > '4')
 555                                 return SR_ERR;
 556                         analog_channel = ch->name[2] - '1';
 557                 }
 558         }
 559
 560         switch (key) {
 561         case SR_CONF_NUM_HDIV:
 562                 *data = g_variant_new_int32(devc->model->series->num_horizontal_divs);
 563                 break;
 564         case SR_CONF_NUM_VDIV:
 565                 *data = g_variant_new_int32(devc->num_vdivs);
 566                 break;
 567         case SR_CONF_DATA_SOURCE:
 568                 if (devc->data_source == DATA_SOURCE_LIVE)
 569                         *data = g_variant_new_string("Live");
 570                 else if (devc->data_source == DATA_SOURCE_MEMORY)
 571                         *data = g_variant_new_string("Memory");
 572                 else
 573                         *data = g_variant_new_string("Segmented");
 574                 break;
 575         case SR_CONF_LIMIT_FRAMES:
 576                 *data = g_variant_new_uint64(devc->limit_frames);
 577                 break;
 578         case SR_CONF_SAMPLERATE:
 579                 *data = g_variant_new_uint64(devc->sample_rate);
 580                 break;
 581         case SR_CONF_TRIGGER_SOURCE:
 582                 if (!strcmp(devc->trigger_source, "ACL"))
 583                         tmp_str = "AC Line";
 584                 else if (!strcmp(devc->trigger_source, "CHAN1"))
 585                         tmp_str = "CH1";
 586                 else if (!strcmp(devc->trigger_source, "CHAN2"))
 587                         tmp_str = "CH2";
 588                 else if (!strcmp(devc->trigger_source, "CHAN3"))
 589                         tmp_str = "CH3";
 590                 else if (!strcmp(devc->trigger_source, "CHAN4"))
 591                         tmp_str = "CH4";
 592                 else
 593                         tmp_str = devc->trigger_source;
 594                 *data = g_variant_new_string(tmp_str);
 595                 break;
 596         case SR_CONF_TRIGGER_SLOPE:
 597                 if (!strncmp(devc->trigger_slope, "POS", 3)) {
 598                         tmp_str = "r";
 599                 } else if (!strncmp(devc->trigger_slope, "NEG", 3)) {
 600                         tmp_str = "f";
 601                 } else {
 602                         sr_dbg("Unknown trigger slope: '%s'.", devc->trigger_slope);
 603                         return SR_ERR_NA;
 604                 }
 605                 *data = g_variant_new_string(tmp_str);
 606                 break;
 607         case SR_CONF_TRIGGER_LEVEL:
 608                 *data = g_variant_new_double(devc->trigger_level);
 609                 break;
 610         case SR_CONF_TIMEBASE:
 611                 for (i = 0; i < devc->num_timebases; i++) {
 612                         float tb = (float)devc->timebases[i][0] / devc->timebases[i][1];
 613                         float diff = fabs(devc->timebase - tb);
 614                         if (diff < smallest_diff) {
 615                                 smallest_diff = diff;
 616                                 idx = i;
 617                         }
 618                 }
 619                 if (idx < 0) {
 620                         sr_dbg("Negative timebase index: %d.", idx);
 621                         return SR_ERR_NA;
 622                 }
 623                 *data = g_variant_new("(tt)", devc->timebases[idx][0],
 624                                               devc->timebases[idx][1]);
 625                 break;
 626         case SR_CONF_VDIV:
 627                 if (analog_channel < 0) {
 628                         sr_dbg("Negative analog channel: %d.", analog_channel);
 629                         return SR_ERR_NA;
 630                 }
 631                 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
 632                         float vdiv = (float)vdivs[i][0] / vdivs[i][1];
 633                         float diff = fabs(devc->vdiv[analog_channel] - vdiv);
 634                         if (diff < smallest_diff) {
 635                                 smallest_diff = diff;
 636                                 idx = i;
 637                         }
 638                 }
 639                 if (idx < 0) {
 640                         sr_dbg("Negative vdiv index: %d.", idx);
 641                         return SR_ERR_NA;
 642                 }
 643                 *data = g_variant_new("(tt)", vdivs[idx][0], vdivs[idx][1]);
 644                 break;
 645         case SR_CONF_COUPLING:
 646                 if (analog_channel < 0) {
 647                         sr_dbg("Negative analog channel: %d.", analog_channel);
 648                         return SR_ERR_NA;
 649                 }
 650                 *data = g_variant_new_string(devc->coupling[analog_channel]);
 651                 break;
 652         case SR_CONF_PROBE_FACTOR:
 653                 if (analog_channel < 0) {
 654                         sr_dbg("Negative analog channel: %d.", analog_channel);
 655                         return SR_ERR_NA;
 656                 }
 657                 *data = g_variant_new_uint64(devc->attenuation[analog_channel]);
 658                 break;
 659         default:
 660                 return SR_ERR_NA;
 661         }
 662
 663         return SR_OK;
 664 }
 665
 666 static int config_set(uint32_t key, GVariant *data,
 667         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 668 {
 669         struct dev_context *devc;
 670         uint64_t p;
 671         double t_dbl;
 672         int ret, idx, i;
 673         const char *tmp_str;
 674         char buffer[16];
 675
 676         devc = sdi->priv;
 677
 678         /* If a channel group is specified, it must be a valid one. */
 679         if (cg && !g_slist_find(sdi->channel_groups, cg)) {
 680                 sr_err("Invalid channel group specified.");
 681                 return SR_ERR;
 682         }
 683
 684         switch (key) {
 685         case SR_CONF_LIMIT_FRAMES:
 686                 devc->limit_frames = g_variant_get_uint64(data);
 687                 break;
 688         case SR_CONF_TRIGGER_SLOPE:
 689                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0)
 690                         return SR_ERR_ARG;
 691                 g_free(devc->trigger_slope);
 692                 devc->trigger_slope = g_strdup((trigger_slopes[idx][0] == 'r') ? "POS" : "NEG");
 693                 return rigol_ds_config_set(sdi, ":TRIG:EDGE:SLOP %s", devc->trigger_slope);
 694         case SR_CONF_HORIZ_TRIGGERPOS:
 695                 t_dbl = g_variant_get_double(data);
 696                 if (t_dbl < 0.0 || t_dbl > 1.0) {
 697                         sr_err("Invalid horiz. trigger position: %g.", t_dbl);
 698                         return SR_ERR;
 699                 }
 700                 devc->horiz_triggerpos = t_dbl;
 701                 /* We have the trigger offset as a percentage of the frame, but
 702                  * need to express this in seconds. */
 703                 t_dbl = -(devc->horiz_triggerpos - 0.5) * devc->timebase * devc->num_timebases;
 704                 g_ascii_formatd(buffer, sizeof(buffer), "%.6f", t_dbl);
 705                 return rigol_ds_config_set(sdi,
 706                         devc->model->cmds[CMD_SET_HORIZ_TRIGGERPOS].str, buffer);
 707         case SR_CONF_TRIGGER_LEVEL:
 708                 t_dbl = g_variant_get_double(data);
 709                 g_ascii_formatd(buffer, sizeof(buffer), "%.3f", t_dbl);
 710                 ret = rigol_ds_config_set(sdi, ":TRIG:EDGE:LEV %s", buffer);
 711                 if (ret == SR_OK)
 712                         devc->trigger_level = t_dbl;
 713                 return ret;
 714         case SR_CONF_TIMEBASE:
 715                 if ((idx = std_u64_tuple_idx(data, devc->timebases, devc->num_timebases)) < 0)
 716                         return SR_ERR_ARG;
 717                 devc->timebase = (float)devc->timebases[idx][0] / devc->timebases[idx][1];
 718                 g_ascii_formatd(buffer, sizeof(buffer), "%.9f",
 719                                 devc->timebase);
 720                 return rigol_ds_config_set(sdi, ":TIM:SCAL %s", buffer);
 721         case SR_CONF_TRIGGER_SOURCE:
 722                 if ((idx = std_str_idx(data, devc->model->trigger_sources, devc->model->num_trigger_sources)) < 0)
 723                         return SR_ERR_ARG;
 724                 g_free(devc->trigger_source);
 725                 devc->trigger_source = g_strdup(devc->model->trigger_sources[idx]);
 726                 if (!strcmp(devc->trigger_source, "AC Line"))
 727                         tmp_str = "ACL";
 728                 else if (!strcmp(devc->trigger_source, "CH1"))
 729                         tmp_str = "CHAN1";
 730                 else if (!strcmp(devc->trigger_source, "CH2"))
 731                         tmp_str = "CHAN2";
 732                 else if (!strcmp(devc->trigger_source, "CH3"))
 733                         tmp_str = "CHAN3";
 734                 else if (!strcmp(devc->trigger_source, "CH4"))
 735                         tmp_str = "CHAN4";
 736                 else
 737                         tmp_str = (char *)devc->trigger_source;
 738                 return rigol_ds_config_set(sdi, ":TRIG:EDGE:SOUR %s", tmp_str);
 739         case SR_CONF_VDIV:
 740                 if (!cg)
 741                         return SR_ERR_CHANNEL_GROUP;
 742                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 743                         return SR_ERR_ARG;
 744                 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
 745                         return SR_ERR_ARG;
 746                 devc->vdiv[i] = (float)vdivs[idx][0] / vdivs[idx][1];
 747                 g_ascii_formatd(buffer, sizeof(buffer), "%.3f", devc->vdiv[i]);
 748                 return rigol_ds_config_set(sdi, ":CHAN%d:SCAL %s", i + 1, buffer);
 749         case SR_CONF_COUPLING:
 750                 if (!cg)
 751                         return SR_ERR_CHANNEL_GROUP;
 752                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 753                         return SR_ERR_ARG;
 754                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
 755                         return SR_ERR_ARG;
 756                 g_free(devc->coupling[i]);
 757                 devc->coupling[i] = g_strdup(coupling[idx]);
 758                 return rigol_ds_config_set(sdi, ":CHAN%d:COUP %s", i + 1, devc->coupling[i]);
 759         case SR_CONF_PROBE_FACTOR:
 760                 if (!cg)
 761                         return SR_ERR_CHANNEL_GROUP;
 762                 if ((i = std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels)) < 0)
 763                         return SR_ERR_ARG;
 764                 if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(probe_factor))) < 0)
 765                         return SR_ERR_ARG;
 766                 p = g_variant_get_uint64(data);
 767                 devc->attenuation[i] = probe_factor[idx];
 768                 ret = rigol_ds_config_set(sdi, ":CHAN%d:PROB %"PRIu64, i + 1, p);
 769                 if (ret == SR_OK)
 770                         rigol_ds_get_dev_cfg_vertical(sdi);
 771                 return ret;
 772         case SR_CONF_DATA_SOURCE:
 773                 tmp_str = g_variant_get_string(data, NULL);
 774                 if (!strcmp(tmp_str, "Live"))
 775                         devc->data_source = DATA_SOURCE_LIVE;
 776                 else if (devc->model->series->protocol >= PROTOCOL_V2
 777                         && !strcmp(tmp_str, "Memory"))
 778                         devc->data_source = DATA_SOURCE_MEMORY;
 779                 else if (devc->model->series->protocol >= PROTOCOL_V3
 780                          && !strcmp(tmp_str, "Segmented"))
 781                         devc->data_source = DATA_SOURCE_SEGMENTED;
 782                 else {
 783                         sr_err("Unknown data source: '%s'.", tmp_str);
 784                         return SR_ERR;
 785                 }
 786                 break;
 787         default:
 788                 return SR_ERR_NA;
 789         }
 790
 791         return SR_OK;
 792 }
 793
 794 static int config_list(uint32_t key, GVariant **data,
 795         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 796 {
 797         struct dev_context *devc;
 798
 799         devc = (sdi) ? sdi->priv : NULL;
 800
 801         switch (key) {
 802         case SR_CONF_SCAN_OPTIONS:
 803         case SR_CONF_DEVICE_OPTIONS:
 804                 if (!cg)
 805                         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 806                 if (!devc)
 807                         return SR_ERR_ARG;
 808                 if (cg == devc->digital_group) {
 809                         *data = std_gvar_array_u32(NULL, 0);
 810                         return SR_OK;
 811                 } else {
 812                         if (std_cg_idx(cg, devc->analog_groups, devc->model->analog_channels) < 0)
 813                                 return SR_ERR_ARG;
 814                         *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog));
 815                         return SR_OK;
 816                 }
 817                 break;
 818         case SR_CONF_COUPLING:
 819                 if (!cg)
 820                         return SR_ERR_CHANNEL_GROUP;
 821                 *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling));
 822                 break;
 823         case SR_CONF_PROBE_FACTOR:
 824                 if (!cg)
 825                         return SR_ERR_CHANNEL_GROUP;
 826                 *data = std_gvar_array_u64(ARRAY_AND_SIZE(probe_factor));
 827                 break;
 828         case SR_CONF_VDIV:
 829                 if (!devc)
 830                         /* Can't know this until we have the exact model. */
 831                         return SR_ERR_ARG;
 832                 if (!cg)
 833                         return SR_ERR_CHANNEL_GROUP;
 834                 *data = std_gvar_tuple_array(devc->vdivs, devc->num_vdivs);
 835                 break;
 836         case SR_CONF_TIMEBASE:
 837                 if (!devc)
 838                         /* Can't know this until we have the exact model. */
 839                         return SR_ERR_ARG;
 840                 if (devc->num_timebases <= 0)
 841                         return SR_ERR_NA;
 842                 *data = std_gvar_tuple_array(devc->timebases, devc->num_timebases);
 843                 break;
 844         case SR_CONF_TRIGGER_SOURCE:
 845                 if (!devc)
 846                         /* Can't know this until we have the exact model. */
 847                         return SR_ERR_ARG;
 848                 *data = g_variant_new_strv(devc->model->trigger_sources, devc->model->num_trigger_sources);
 849                 break;
 850         case SR_CONF_TRIGGER_SLOPE:
 851                 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
 852                 break;
 853         case SR_CONF_DATA_SOURCE:
 854                 if (!devc)
 855                         /* Can't know this until we have the exact model. */
 856                         return SR_ERR_ARG;
 857                 switch (devc->model->series->protocol) {
 858                 case PROTOCOL_V1:
 859                         *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources) - 2);
 860                         break;
 861                 case PROTOCOL_V2:
 862                         *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources) - 1);
 863                         break;
 864                 default:
 865                         *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
 866                         break;
 867                 }
 868                 break;
 869         default:
 870                 return SR_ERR_NA;
 871         }
 872
 873         return SR_OK;
 874 }
 875
 876 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 877 {
 878         struct sr_scpi_dev_inst *scpi;
 879         struct dev_context *devc;
 880         struct sr_channel *ch;
 881         gboolean some_digital;
 882         GSList *l;
 883         char *cmd;
 884         int protocol;
 885
 886         scpi = sdi->conn;
 887         devc = sdi->priv;
 888         protocol = devc->model->series->protocol;
 889
 890         devc->num_frames = 0;
 891         devc->num_frames_segmented = 0;
 892
 893         some_digital = FALSE;
 894         for (l = sdi->channels; l; l = l->next) {
 895                 ch = l->data;
 896                 sr_dbg("handling channel %s", ch->name);
 897                 if (ch->type == SR_CHANNEL_ANALOG) {
 898                         if (ch->enabled)
 899                                 devc->enabled_channels = g_slist_append(
 900                                                 devc->enabled_channels, ch);
 901                         if (ch->enabled != devc->analog_channels[ch->index]) {
 902                                 /* Enabled channel is currently disabled, or vice versa. */
 903                                 if (rigol_ds_config_set(sdi, ":CHAN%d:DISP %s", ch->index + 1,
 904                                                 ch->enabled ? "ON" : "OFF") != SR_OK)
 905                                         return SR_ERR;
 906                                 devc->analog_channels[ch->index] = ch->enabled;
 907                         }
 908                 } else if (ch->type == SR_CHANNEL_LOGIC) {
 909                         /* Only one list entry for older protocols. All channels are
 910                          * retrieved together when this entry is processed. */
 911                         if (ch->enabled && (
 912                                                 protocol > PROTOCOL_V3 ||
 913                                                 !some_digital))
 914                                 devc->enabled_channels = g_slist_append(
 915                                                 devc->enabled_channels, ch);
 916                         if (ch->enabled) {
 917                                 some_digital = TRUE;
 918                                 /* Turn on LA module if currently off. */
 919                                 if (!devc->la_enabled) {
 920                                         if (rigol_ds_config_set(sdi, protocol >= PROTOCOL_V3 ?
 921                                                                 ":LA:STAT ON" : ":LA:DISP ON") != SR_OK)
 922                                                 return SR_ERR;
 923                                         devc->la_enabled = TRUE;
 924                                 }
 925                         }
 926                         if (ch->enabled != devc->digital_channels[ch->index]) {
 927                                 /* Enabled channel is currently disabled, or vice versa. */
 928                                 if (protocol >= PROTOCOL_V5)
 929                                         cmd = ":LA:DISP D%d,%s";
 930                                 else if (protocol >= PROTOCOL_V3)
 931                                         cmd = ":LA:DIG%d:DISP %s";
 932                                 else
 933                                         cmd = ":DIG%d:TURN %s";
 934
 935                                 if (rigol_ds_config_set(sdi, cmd, ch->index,
 936                                                 ch->enabled ? "ON" : "OFF") != SR_OK)
 937                                         return SR_ERR;
 938                                 devc->digital_channels[ch->index] = ch->enabled;
 939                         }
 940                 }
 941         }
 942
 943         if (!devc->enabled_channels)
 944                 return SR_ERR;
 945
 946         /* Turn off LA module if on and no digital channels selected. */
 947         if (devc->la_enabled && !some_digital)
 948                 if (rigol_ds_config_set(sdi,
 949                                 devc->model->series->protocol >= PROTOCOL_V3 ?
 950                                         ":LA:STAT OFF" : ":LA:DISP OFF") != SR_OK)
 951                         return SR_ERR;
 952
 953         /* Set memory mode. */
 954         if (devc->data_source == DATA_SOURCE_SEGMENTED) {
 955                 switch (protocol) {
 956                 case PROTOCOL_V1:
 957                 case PROTOCOL_V2:
 958                         /* V1 and V2 do not have segmented data */
 959                         sr_err("Data source 'Segmented' not supported on this model");
 960                         break;
 961                 case PROTOCOL_V3:
 962                 case PROTOCOL_V4:
 963                 {
 964                         int frames = 0;
 965                         if (sr_scpi_get_int(sdi->conn,
 966                                                 protocol == PROTOCOL_V4 ? "FUNC:WREP:FEND?" :
 967                                                 "FUNC:WREP:FMAX?", &frames) != SR_OK)
 968                                 return SR_ERR;
 969                         if (frames <= 0) {
 970                                 sr_err("No segmented data available");
 971                                 return SR_ERR;
 972                         }
 973                         devc->num_frames_segmented = frames;
 974                         break;
 975                 }
 976                 case PROTOCOL_V5:
 977                         /* The frame limit has to be read on the fly, just set up
 978                          * reading of the first frame */
 979                         if (rigol_ds_config_set(sdi, "REC:CURR 1") != SR_OK)
 980                                 return SR_ERR;
 981                         break;
 982                 default:
 983                         sr_err("Data source 'Segmented' not yet supported");
 984                         return SR_ERR;
 985                 }
 986         }
 987
 988         devc->analog_frame_size = analog_frame_size(sdi);
 989         devc->digital_frame_size = digital_frame_size(sdi);
 990
 991         switch (devc->model->series->protocol) {
 992         case PROTOCOL_V2:
 993                 if (rigol_ds_config_set(sdi, ":ACQ:MEMD LONG") != SR_OK)
 994                         return SR_ERR;
 995                 break;
 996         case PROTOCOL_V3:
 997                 /* Apparently for the DS2000 the memory
 998                  * depth can only be set in Running state -
 999                  * this matches the behaviour of the UI. */
1000                 if (rigol_ds_config_set(sdi, ":RUN") != SR_OK)
1001                         return SR_ERR;
1002                 if (rigol_ds_config_set(sdi, ":ACQ:MDEP %d",
1003                                         devc->analog_frame_size) != SR_OK)
1004                         return SR_ERR;
1005                 if (rigol_ds_config_set(sdi, ":STOP") != SR_OK)
1006                         return SR_ERR;
1007                 break;
1008         default:
1009                 break;
1010         }
1011
1012         if (devc->data_source == DATA_SOURCE_LIVE)
1013                 if (rigol_ds_config_set(sdi, ":RUN") != SR_OK)
1014                         return SR_ERR;
1015
1016         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
1017                         rigol_ds_receive, (void *)sdi);
1018
1019         std_session_send_df_header(sdi);
1020
1021         devc->channel_entry = devc->enabled_channels;
1022
1023         if (devc->data_source == DATA_SOURCE_LIVE)
1024                 devc->sample_rate = analog_frame_size(sdi) /
1025                         (devc->timebase * devc->model->series->num_horizontal_divs);
1026         else {
1027                 float xinc;
1028                 if (devc->model->series->protocol >= PROTOCOL_V3 &&
1029                                 sr_scpi_get_float(sdi->conn, "WAV:XINC?", &xinc) != SR_OK) {
1030                         sr_err("Couldn't get sampling rate");
1031                         return SR_ERR;
1032                 }
1033                 devc->sample_rate = 1. / xinc;
1034         }
1035
1036
1037         if (rigol_ds_capture_start(sdi) != SR_OK)
1038                 return SR_ERR;
1039
1040         /* Start of first frame. */
1041         std_session_send_df_frame_begin(sdi);
1042
1043         return SR_OK;
1044 }
1045
1046 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
1047 {
1048         struct dev_context *devc;
1049         struct sr_scpi_dev_inst *scpi;
1050
1051         devc = sdi->priv;
1052
1053         std_session_send_df_end(sdi);
1054
1055         g_slist_free(devc->enabled_channels);
1056         devc->enabled_channels = NULL;
1057         scpi = sdi->conn;
1058         sr_scpi_source_remove(sdi->session, scpi);
1059
1060         return SR_OK;
1061 }
1062
1063 static struct sr_dev_driver rigol_ds_driver_info = {
1064         .name = "rigol-ds",
1065         .longname = "Rigol DS",
1066         .api_version = 1,
1067         .init = std_init,
1068         .cleanup = std_cleanup,
1069         .scan = scan,
1070         .dev_list = std_dev_list,
1071         .dev_clear = dev_clear,
1072         .config_get = config_get,
1073         .config_set = config_set,
1074         .config_list = config_list,
1075         .dev_open = dev_open,
1076         .dev_close = dev_close,
1077         .dev_acquisition_start = dev_acquisition_start,
1078         .dev_acquisition_stop = dev_acquisition_stop,
1079         .context = NULL,
1080 };
1081 SR_REGISTER_DEV_DRIVER(rigol_ds_driver_info);