src/hardware/zeroplus-logic-cube/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21 #include "protocol.h"
  22
  23 #define USB_INTERFACE                   0
  24 #define USB_CONFIGURATION               1
  25 #define NUM_TRIGGER_STAGES              4
  26 #define PACKET_SIZE                     2048    /* ?? */
  27
  28 //#define ZP_EXPERIMENTAL
  29
  30 struct zp_model {
  31         uint16_t vid;
  32         uint16_t pid;
  33         const char *model_name;
  34         unsigned int channels;
  35         unsigned int sample_depth;      /* In Ksamples/channel */
  36         unsigned int max_sampling_freq;
  37 };
  38
  39 /*
  40  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
  41  * same 128K sample depth.
  42  */
  43 static const struct zp_model zeroplus_models[] = {
  44         {0x0c12, 0x7002, "LAP-16128U",    16, 128,  200},
  45         {0x0c12, 0x7007, "LAP-16032U",    16, 32,   200},
  46         {0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
  47         {0x0c12, 0x700a, "LAP-C(16128)",  16, 128,  200},
  48         {0x0c12, 0x700b, "LAP-C(32128)",  32, 128,  200},
  49         {0x0c12, 0x700c, "LAP-C(321000)", 32, 1024, 200},
  50         {0x0c12, 0x700d, "LAP-C(322000)", 32, 2048, 200},
  51         {0x0c12, 0x700e, "LAP-C(16032)",  16, 32,   100},
  52         {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
  53         {0x0c12, 0x7025, "LAP-C(16128+)", 16, 128,  200},
  54         {0x0c12, 0x7064, "Logian-16L",    16, 128,  200},
  55         {0x0c12, 0x7100, "AKIP-9101",     16, 256,  200},
  56         ALL_ZERO
  57 };
  58
  59 static const uint32_t drvopts[] = {
  60         SR_CONF_LOGIC_ANALYZER,
  61 };
  62
  63 static const uint32_t devopts[] = {
  64         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_LIST,
  65         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  66         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
  67         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
  68         SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  69 };
  70
  71 static const int32_t trigger_matches[] = {
  72         SR_TRIGGER_ZERO,
  73         SR_TRIGGER_ONE,
  74         SR_TRIGGER_RISING,
  75         SR_TRIGGER_FALLING,
  76         SR_TRIGGER_EDGE,
  77 };
  78
  79 /*
  80  * ZEROPLUS LAP-C (16032) numbers the 16 channels A0-A7 and B0-B7.
  81  * We currently ignore other untested/unsupported devices here.
  82  */
  83 static const char *channel_names[] = {
  84         "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  85         "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
  86         "C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7",
  87         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
  88 };
  89
  90 /*
  91  * The hardware supports more samplerates than these, but these are the
  92  * options hardcoded into the vendor's Windows GUI.
  93  */
  94
  95 static const uint64_t samplerates_100[] = {
  96         SR_HZ(100),
  97         SR_HZ(500),
  98         SR_KHZ(1),
  99         SR_KHZ(5),
 100         SR_KHZ(25),
 101         SR_KHZ(50),
 102         SR_KHZ(100),
 103         SR_KHZ(200),
 104         SR_KHZ(400),
 105         SR_KHZ(800),
 106         SR_MHZ(1),
 107         SR_MHZ(10),
 108         SR_MHZ(25),
 109         SR_MHZ(50),
 110         SR_MHZ(80),
 111         SR_MHZ(100),
 112 };
 113
 114 const uint64_t samplerates_200[] = {
 115         SR_HZ(100),
 116         SR_HZ(500),
 117         SR_KHZ(1),
 118         SR_KHZ(5),
 119         SR_KHZ(25),
 120         SR_KHZ(50),
 121         SR_KHZ(100),
 122         SR_KHZ(200),
 123         SR_KHZ(400),
 124         SR_KHZ(800),
 125         SR_MHZ(1),
 126         SR_MHZ(10),
 127         SR_MHZ(25),
 128         SR_MHZ(50),
 129         SR_MHZ(80),
 130         SR_MHZ(100),
 131         SR_MHZ(150),
 132         SR_MHZ(200),
 133 };
 134
 135 SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate)
 136 {
 137         int i;
 138
 139         for (i = 0; ARRAY_SIZE(samplerates_200); i++)
 140                 if (samplerate == samplerates_200[i])
 141                         break;
 142
 143         if (i == ARRAY_SIZE(samplerates_200) || samplerate > devc->max_samplerate) {
 144                 sr_err("Unsupported samplerate: %" PRIu64 "Hz.", samplerate);
 145                 return SR_ERR_ARG;
 146         }
 147
 148         sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate);
 149
 150         if (samplerate >= SR_MHZ(1))
 151                 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 152         else if (samplerate >= SR_KHZ(1))
 153                 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
 154         else
 155                 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
 156
 157         devc->cur_samplerate = samplerate;
 158
 159         return SR_OK;
 160 }
 161
 162 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 163 {
 164         struct sr_dev_inst *sdi;
 165         struct drv_context *drvc;
 166         struct dev_context *devc;
 167         const struct zp_model *prof;
 168         struct libusb_device_descriptor des;
 169         struct libusb_device_handle *hdl;
 170         libusb_device **devlist;
 171         GSList *devices;
 172         int ret, i, j;
 173         const struct zp_model *check;
 174         char serial_num[64], connection_id[64];
 175
 176         (void)options;
 177
 178         drvc = di->context;
 179
 180         devices = NULL;
 181
 182         /* Find all ZEROPLUS analyzers and add them to device list. */
 183         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 184
 185         for (i = 0; devlist[i]; i++) {
 186                 libusb_get_device_descriptor(devlist[i], &des);
 187
 188                 /*
 189                  * Check for expected VID:PID first as soon as we got
 190                  * the descriptor's content. This avoids access to flaky
 191                  * unrelated devices which trouble the application even
 192                  * if they are unrelated to measurement purposes.
 193                  *
 194                  * See https://sigrok.org/bugzilla/show_bug.cgi?id=1115
 195                  * and https://github.com/sigrokproject/libsigrok/pull/165
 196                  * for a discussion.
 197                  */
 198                 prof = NULL;
 199                 for (j = 0; zeroplus_models[j].vid; j++) {
 200                         check = &zeroplus_models[j];
 201                         if (des.idVendor != check->vid)
 202                                 continue;
 203                         if (des.idProduct != check->pid)
 204                                 continue;
 205                         prof = check;
 206                         break;
 207                 }
 208                 if (!prof)
 209                         continue;
 210
 211                 /* Get the device's serial number from USB strings. */
 212                 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
 213                         continue;
 214
 215                 if (des.iSerialNumber == 0) {
 216                         serial_num[0] = '\0';
 217                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 218                                 des.iSerialNumber, (unsigned char *) serial_num,
 219                                 sizeof(serial_num))) < 0) {
 220                         sr_warn("Failed to get serial number string descriptor: %s.",
 221                                 libusb_error_name(ret));
 222                         continue;
 223                 }
 224
 225                 libusb_close(hdl);
 226
 227                 if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
 228                         continue;
 229
 230                 sr_info("Found ZEROPLUS %s.", prof->model_name);
 231
 232                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 233                 sdi->status = SR_ST_INACTIVE;
 234                 sdi->vendor = g_strdup("ZEROPLUS");
 235                 sdi->model = g_strdup(prof->model_name);
 236                 sdi->serial_num = g_strdup(serial_num);
 237                 sdi->connection_id = g_strdup(connection_id);
 238
 239                 devc = g_malloc0(sizeof(struct dev_context));
 240                 sdi->priv = devc;
 241                 devc->prof = prof;
 242                 devc->num_channels = prof->channels;
 243 #ifdef ZP_EXPERIMENTAL
 244                 devc->max_sample_depth = 128 * 1024;
 245                 devc->max_samplerate = 200;
 246 #else
 247                 devc->max_sample_depth = prof->sample_depth * 1024;
 248                 devc->max_samplerate = prof->max_sampling_freq;
 249 #endif
 250                 devc->max_samplerate *= SR_MHZ(1);
 251                 devc->memory_size = MEMORY_SIZE_8K;
 252                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 253
 254                 for (j = 0; j < devc->num_channels; j++)
 255                         sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
 256                                         channel_names[j]);
 257
 258                 devices = g_slist_append(devices, sdi);
 259                 sdi->inst_type = SR_INST_USB;
 260                 sdi->conn = sr_usb_dev_inst_new(
 261                         libusb_get_bus_number(devlist[i]),
 262                         libusb_get_device_address(devlist[i]), NULL);
 263         }
 264         libusb_free_device_list(devlist, 1);
 265
 266         return std_scan_complete(di, devices);
 267 }
 268
 269 static int dev_open(struct sr_dev_inst *sdi)
 270 {
 271         struct sr_dev_driver *di = sdi->driver;
 272         struct dev_context *devc;
 273         struct drv_context *drvc;
 274         struct sr_usb_dev_inst *usb;
 275         int ret;
 276
 277         drvc = di->context;
 278         usb = sdi->conn;
 279         devc = sdi->priv;
 280
 281         ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
 282         if (ret != SR_OK)
 283                 return ret;
 284
 285         ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION);
 286         if (ret < 0) {
 287                 sr_err("Unable to set USB configuration %d: %s.",
 288                        USB_CONFIGURATION, libusb_error_name(ret));
 289                 return SR_ERR;
 290         }
 291
 292         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 293         if (ret != 0) {
 294                 sr_err("Unable to claim interface: %s.",
 295                        libusb_error_name(ret));
 296                 return SR_ERR;
 297         }
 298
 299         /* Set default configuration after power on. */
 300         if (analyzer_read_status(usb->devhdl) == 0)
 301                 analyzer_configure(usb->devhdl);
 302
 303         analyzer_reset(usb->devhdl);
 304         analyzer_initialize(usb->devhdl);
 305
 306         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 307         // analyzer_set_freq(g_freq, g_freq_scale);
 308         analyzer_set_trigger_count(1);
 309         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 310         // * get_memory_size(g_memory_size)) / 100) >> 2);
 311
 312 #if 0
 313         if (g_double_mode == 1)
 314                 analyzer_set_compression(COMPRESSION_DOUBLE);
 315         else if (g_compression == 1)
 316                 analyzer_set_compression(COMPRESSION_ENABLE);
 317         else
 318 #endif
 319         analyzer_set_compression(COMPRESSION_NONE);
 320
 321         if (devc->cur_samplerate == 0) {
 322                 /* Samplerate hasn't been set. Default to 1MHz. */
 323                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 324                 devc->cur_samplerate = SR_MHZ(1);
 325         }
 326
 327         if (devc->cur_threshold == 0)
 328                 set_voltage_threshold(devc, 1.5);
 329
 330         return SR_OK;
 331 }
 332
 333 static int dev_close(struct sr_dev_inst *sdi)
 334 {
 335         struct sr_usb_dev_inst *usb;
 336
 337         usb = sdi->conn;
 338
 339         if (!usb->devhdl)
 340                 return SR_ERR_BUG;
 341
 342         sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
 343                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 344         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 345         libusb_reset_device(usb->devhdl);
 346         libusb_close(usb->devhdl);
 347         usb->devhdl = NULL;
 348
 349         return SR_OK;
 350 }
 351
 352 static int config_get(uint32_t key, GVariant **data,
 353         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 354 {
 355         struct dev_context *devc;
 356
 357         (void)cg;
 358
 359         if (!sdi)
 360                 return SR_ERR_ARG;
 361
 362         devc = sdi->priv;
 363
 364         switch (key) {
 365         case SR_CONF_SAMPLERATE:
 366                 *data = g_variant_new_uint64(devc->cur_samplerate);
 367                 break;
 368         case SR_CONF_CAPTURE_RATIO:
 369                 *data = g_variant_new_uint64(devc->capture_ratio);
 370                 break;
 371         case SR_CONF_VOLTAGE_THRESHOLD:
 372                 *data = std_gvar_tuple_double(devc->cur_threshold, devc->cur_threshold);
 373                 break;
 374         default:
 375                 return SR_ERR_NA;
 376         }
 377
 378         return SR_OK;
 379 }
 380
 381 static int config_set(uint32_t key, GVariant *data,
 382         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 383 {
 384         struct dev_context *devc;
 385         gdouble low, high;
 386
 387         (void)cg;
 388
 389         devc = sdi->priv;
 390
 391         switch (key) {
 392         case SR_CONF_SAMPLERATE:
 393                 return zp_set_samplerate(devc, g_variant_get_uint64(data));
 394         case SR_CONF_LIMIT_SAMPLES:
 395                 return set_limit_samples(devc, g_variant_get_uint64(data));
 396         case SR_CONF_CAPTURE_RATIO:
 397                 devc->capture_ratio = g_variant_get_uint64(data);
 398                 break;
 399         case SR_CONF_VOLTAGE_THRESHOLD:
 400                 g_variant_get(data, "(dd)", &low, &high);
 401                 return set_voltage_threshold(devc, (low + high) / 2.0);
 402         default:
 403                 return SR_ERR_NA;
 404         }
 405
 406         return SR_OK;
 407 }
 408
 409 static int config_list(uint32_t key, GVariant **data,
 410         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 411 {
 412         struct dev_context *devc;
 413
 414         switch (key) {
 415         case SR_CONF_DEVICE_OPTIONS:
 416                 return STD_CONFIG_LIST(key, data, sdi, cg, NO_OPTS, drvopts, devopts);
 417         case SR_CONF_SAMPLERATE:
 418                 devc = sdi->priv;
 419                 if (devc->prof->max_sampling_freq == 100)
 420                         *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates_100));
 421                 else if (devc->prof->max_sampling_freq == 200)
 422                         *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates_200));
 423                 else {
 424                         sr_err("Internal error: Unknown max. samplerate: %d.",
 425                                devc->prof->max_sampling_freq);
 426                         return SR_ERR_ARG;
 427                 }
 428                 break;
 429         case SR_CONF_TRIGGER_MATCH:
 430                 *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
 431                 break;
 432         case SR_CONF_VOLTAGE_THRESHOLD:
 433                 *data = std_gvar_min_max_step_thresholds(-6.0, 6.0, 0.1);
 434                 break;
 435         case SR_CONF_LIMIT_SAMPLES:
 436                 if (!sdi)
 437                         return SR_ERR_ARG;
 438                 devc = sdi->priv;
 439                 *data = std_gvar_tuple_u64(0, devc->max_sample_depth);
 440                 break;
 441         default:
 442                 return SR_ERR_NA;
 443         }
 444
 445         return SR_OK;
 446 }
 447
 448 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 449 {
 450         struct dev_context *devc;
 451         struct sr_usb_dev_inst *usb;
 452         struct sr_datafeed_packet packet;
 453         struct sr_datafeed_logic logic;
 454         unsigned int samples_read;
 455         int res;
 456         unsigned int packet_num, n;
 457         unsigned char *buf;
 458         unsigned int status;
 459         unsigned int stop_address;
 460         unsigned int now_address;
 461         unsigned int trigger_address;
 462         unsigned int trigger_offset;
 463         unsigned int triggerbar;
 464         unsigned int ramsize_trigger;
 465         unsigned int memory_size;
 466         unsigned int valid_samples;
 467         unsigned int discard;
 468         int trigger_now;
 469
 470         devc = sdi->priv;
 471
 472         if (analyzer_add_triggers(sdi) != SR_OK) {
 473                 sr_err("Failed to configure triggers.");
 474                 return SR_ERR;
 475         }
 476
 477         usb = sdi->conn;
 478
 479         set_triggerbar(devc);
 480
 481         /* Push configured settings to device. */
 482         analyzer_configure(usb->devhdl);
 483
 484         analyzer_start(usb->devhdl);
 485         sr_info("Waiting for data.");
 486         analyzer_wait_data(usb->devhdl);
 487
 488         status = analyzer_read_status(usb->devhdl);
 489         stop_address = analyzer_get_stop_address(usb->devhdl);
 490         now_address = analyzer_get_now_address(usb->devhdl);
 491         trigger_address = analyzer_get_trigger_address(usb->devhdl);
 492
 493         triggerbar = analyzer_get_triggerbar_address();
 494         ramsize_trigger = analyzer_get_ramsize_trigger_address();
 495
 496         n = get_memory_size(devc->memory_size);
 497         memory_size = n / 4;
 498
 499         sr_info("Status = 0x%x.", status);
 500         sr_info("Stop address       = 0x%x.", stop_address);
 501         sr_info("Now address        = 0x%x.", now_address);
 502         sr_info("Trigger address    = 0x%x.", trigger_address);
 503         sr_info("Triggerbar address = 0x%x.", triggerbar);
 504         sr_info("Ramsize trigger    = 0x%x.", ramsize_trigger);
 505         sr_info("Memory size        = 0x%x.", memory_size);
 506
 507         std_session_send_df_header(sdi);
 508
 509         /* Check for empty capture */
 510         if ((status & STATUS_READY) && !stop_address) {
 511                 std_session_send_df_end(sdi);
 512                 return SR_OK;
 513         }
 514
 515         buf = g_malloc(PACKET_SIZE);
 516
 517         /* Check if the trigger is in the samples we are throwing away */
 518         trigger_now = now_address == trigger_address ||
 519                 ((now_address + 1) % memory_size) == trigger_address;
 520
 521         /*
 522          * STATUS_READY doesn't clear until now_address advances past
 523          * addr 0, but for our logic, clear it in that case
 524          */
 525         if (!now_address)
 526                 status &= ~STATUS_READY;
 527
 528         analyzer_read_start(usb->devhdl);
 529
 530         /* Calculate how much data to discard */
 531         discard = 0;
 532         if (status & STATUS_READY) {
 533                 /*
 534                  * We haven't wrapped around, we need to throw away data from
 535                  * our current position to the end of the buffer.
 536                  * Additionally, the first two samples captured are always
 537                  * bogus.
 538                  */
 539                 discard += memory_size - now_address + 2;
 540                 now_address = 2;
 541         }
 542
 543         /* If we have more samples than we need, discard them */
 544         valid_samples = (stop_address - now_address) % memory_size;
 545         if (valid_samples > ramsize_trigger + triggerbar) {
 546                 discard += valid_samples - (ramsize_trigger + triggerbar);
 547                 now_address += valid_samples - (ramsize_trigger + triggerbar);
 548         }
 549
 550         sr_info("Need to discard %d samples.", discard);
 551
 552         /* Calculate how far in the trigger is */
 553         if (trigger_now)
 554                 trigger_offset = 0;
 555         else
 556                 trigger_offset = (trigger_address - now_address) % memory_size;
 557
 558         /* Recalculate the number of samples available */
 559         valid_samples = (stop_address - now_address) % memory_size;
 560
 561         /* Send the incoming transfer to the session bus. */
 562         samples_read = 0;
 563         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 564                 unsigned int len;
 565                 unsigned int buf_offset;
 566
 567                 res = analyzer_read_data(usb->devhdl, buf, PACKET_SIZE);
 568                 if (res != PACKET_SIZE)
 569                         sr_warn("Tried to read %d bytes, actually read %d.",
 570                                 PACKET_SIZE, res);
 571
 572                 if (discard >= PACKET_SIZE / 4) {
 573                         discard -= PACKET_SIZE / 4;
 574                         continue;
 575                 }
 576
 577                 len = PACKET_SIZE - discard * 4;
 578                 buf_offset = discard * 4;
 579                 discard = 0;
 580
 581                 /* Check if we've read all the samples */
 582                 if (samples_read + len / 4 >= valid_samples)
 583                         len = (valid_samples - samples_read) * 4;
 584                 if (!len)
 585                         break;
 586
 587                 if (samples_read < trigger_offset &&
 588                     samples_read + len / 4 > trigger_offset) {
 589                         /* Send out samples remaining before trigger */
 590                         packet.type = SR_DF_LOGIC;
 591                         packet.payload = &logic;
 592                         logic.length = (trigger_offset - samples_read) * 4;
 593                         logic.unitsize = 4;
 594                         logic.data = buf + buf_offset;
 595                         sr_session_send(sdi, &packet);
 596                         len -= logic.length;
 597                         samples_read += logic.length / 4;
 598                         buf_offset += logic.length;
 599                 }
 600
 601                 if (samples_read == trigger_offset)
 602                         std_session_send_df_trigger(sdi);
 603
 604                 /* Send out data (or data after trigger) */
 605                 packet.type = SR_DF_LOGIC;
 606                 packet.payload = &logic;
 607                 logic.length = len;
 608                 logic.unitsize = 4;
 609                 logic.data = buf + buf_offset;
 610                 sr_session_send(sdi, &packet);
 611                 samples_read += len / 4;
 612         }
 613         analyzer_read_stop(usb->devhdl);
 614         g_free(buf);
 615
 616         std_session_send_df_end(sdi);
 617
 618         return SR_OK;
 619 }
 620
 621 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 622 {
 623         struct sr_usb_dev_inst *usb;
 624
 625         std_session_send_df_end(sdi);
 626
 627         usb = sdi->conn;
 628         analyzer_reset(usb->devhdl);
 629         /* TODO: Need to cancel and free any queued up transfers. */
 630
 631         return SR_OK;
 632 }
 633
 634 static struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 635         .name = "zeroplus-logic-cube",
 636         .longname = "ZEROPLUS Logic Cube LAP-C series",
 637         .api_version = 1,
 638         .init = std_init,
 639         .cleanup = std_cleanup,
 640         .scan = scan,
 641         .dev_list = std_dev_list,
 642         .dev_clear = std_dev_clear,
 643         .config_get = config_get,
 644         .config_set = config_set,
 645         .config_list = config_list,
 646         .dev_open = dev_open,
 647         .dev_close = dev_close,
 648         .dev_acquisition_start = dev_acquisition_start,
 649         .dev_acquisition_stop = dev_acquisition_stop,
 650         .context = NULL,
 651 };
 652 SR_REGISTER_DEV_DRIVER(zeroplus_logic_cube_driver_info);