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 VENDOR_NAME                     "ZEROPLUS"
  24 #define USB_INTERFACE                   0
  25 #define USB_CONFIGURATION               1
  26 #define NUM_TRIGGER_STAGES              4
  27 #define PACKET_SIZE                     2048    /* ?? */
  28
  29 //#define ZP_EXPERIMENTAL
  30
  31 struct zp_model {
  32         uint16_t vid;
  33         uint16_t pid;
  34         const char *model_name;
  35         unsigned int channels;
  36         unsigned int sample_depth;      /* In Ksamples/channel */
  37         unsigned int max_sampling_freq;
  38 };
  39
  40 /*
  41  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
  42  * same 128K sample depth.
  43  */
  44 static const struct zp_model zeroplus_models[] = {
  45         {0x0c12, 0x7002, "LAP-16128U",    16, 128,  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, 0x7100, "AKIP-9101", 16, 256, 200},
  54         ALL_ZERO
  55 };
  56
  57 static const uint32_t drvopts[] = {
  58         SR_CONF_LOGIC_ANALYZER,
  59 };
  60
  61 static const uint32_t devopts[] = {
  62         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_LIST,
  63         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  64         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
  65         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
  66         SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  67 };
  68
  69 static const int32_t trigger_matches[] = {
  70         SR_TRIGGER_ZERO,
  71         SR_TRIGGER_ONE,
  72 };
  73
  74 /*
  75  * ZEROPLUS LAP-C (16032) numbers the 16 channels A0-A7 and B0-B7.
  76  * We currently ignore other untested/unsupported devices here.
  77  */
  78 static const char *channel_names[] = {
  79         "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  80         "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
  81         "C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7",
  82         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
  83 };
  84
  85 /*
  86  * The hardware supports more samplerates than these, but these are the
  87  * options hardcoded into the vendor's Windows GUI.
  88  */
  89
  90 static const uint64_t samplerates_100[] = {
  91         SR_HZ(100),
  92         SR_HZ(500),
  93         SR_KHZ(1),
  94         SR_KHZ(5),
  95         SR_KHZ(25),
  96         SR_KHZ(50),
  97         SR_KHZ(100),
  98         SR_KHZ(200),
  99         SR_KHZ(400),
 100         SR_KHZ(800),
 101         SR_MHZ(1),
 102         SR_MHZ(10),
 103         SR_MHZ(25),
 104         SR_MHZ(50),
 105         SR_MHZ(80),
 106         SR_MHZ(100),
 107 };
 108
 109 const uint64_t samplerates_200[] = {
 110         SR_HZ(100),
 111         SR_HZ(500),
 112         SR_KHZ(1),
 113         SR_KHZ(5),
 114         SR_KHZ(25),
 115         SR_KHZ(50),
 116         SR_KHZ(100),
 117         SR_KHZ(200),
 118         SR_KHZ(400),
 119         SR_KHZ(800),
 120         SR_MHZ(1),
 121         SR_MHZ(10),
 122         SR_MHZ(25),
 123         SR_MHZ(50),
 124         SR_MHZ(80),
 125         SR_MHZ(100),
 126         SR_MHZ(150),
 127         SR_MHZ(200),
 128 };
 129
 130 SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate)
 131 {
 132         int i;
 133
 134         for (i = 0; ARRAY_SIZE(samplerates_200); i++)
 135                 if (samplerate == samplerates_200[i])
 136                         break;
 137
 138         if (i == ARRAY_SIZE(samplerates_200) || samplerate > devc->max_samplerate) {
 139                 sr_err("Unsupported samplerate: %" PRIu64 "Hz.", samplerate);
 140                 return SR_ERR_ARG;
 141         }
 142
 143         sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate);
 144
 145         if (samplerate >= SR_MHZ(1))
 146                 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 147         else if (samplerate >= SR_KHZ(1))
 148                 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
 149         else
 150                 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
 151
 152         devc->cur_samplerate = samplerate;
 153
 154         return SR_OK;
 155 }
 156
 157 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 158 {
 159         struct sr_dev_inst *sdi;
 160         struct drv_context *drvc;
 161         struct dev_context *devc;
 162         const struct zp_model *prof;
 163         struct libusb_device_descriptor des;
 164         struct libusb_device_handle *hdl;
 165         libusb_device **devlist;
 166         GSList *devices;
 167         int ret, i, j;
 168         char serial_num[64], connection_id[64];
 169
 170         (void)options;
 171
 172         drvc = di->context;
 173
 174         devices = NULL;
 175
 176         /* Find all ZEROPLUS analyzers and add them to device list. */
 177         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 178
 179         for (i = 0; devlist[i]; i++) {
 180                 libusb_get_device_descriptor(devlist[i], &des);
 181
 182                 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
 183                         continue;
 184
 185                 if (des.iSerialNumber == 0) {
 186                         serial_num[0] = '\0';
 187                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 188                                 des.iSerialNumber, (unsigned char *) serial_num,
 189                                 sizeof(serial_num))) < 0) {
 190                         sr_warn("Failed to get serial number string descriptor: %s.",
 191                                 libusb_error_name(ret));
 192                         continue;
 193                 }
 194
 195                 libusb_close(hdl);
 196
 197                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 198
 199                 prof = NULL;
 200                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 201                         if (des.idVendor == zeroplus_models[j].vid &&
 202                                 des.idProduct == zeroplus_models[j].pid) {
 203                                 prof = &zeroplus_models[j];
 204                         }
 205                 }
 206
 207                 if (!prof)
 208                         continue;
 209                 sr_info("Found ZEROPLUS %s.", prof->model_name);
 210
 211                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 212                 sdi->status = SR_ST_INACTIVE;
 213                 sdi->vendor = g_strdup(VENDOR_NAME);
 214                 sdi->model = g_strdup(prof->model_name);
 215                 sdi->serial_num = g_strdup(serial_num);
 216                 sdi->connection_id = g_strdup(connection_id);
 217
 218                 devc = g_malloc0(sizeof(struct dev_context));
 219                 sdi->priv = devc;
 220                 devc->prof = prof;
 221                 devc->num_channels = prof->channels;
 222 #ifdef ZP_EXPERIMENTAL
 223                 devc->max_sample_depth = 128 * 1024;
 224                 devc->max_samplerate = 200;
 225 #else
 226                 devc->max_sample_depth = prof->sample_depth * 1024;
 227                 devc->max_samplerate = prof->max_sampling_freq;
 228 #endif
 229                 devc->max_samplerate *= SR_MHZ(1);
 230                 devc->memory_size = MEMORY_SIZE_8K;
 231                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 232
 233                 for (j = 0; j < devc->num_channels; j++)
 234                         sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
 235                                         channel_names[j]);
 236
 237                 devices = g_slist_append(devices, sdi);
 238                 sdi->inst_type = SR_INST_USB;
 239                 sdi->conn = sr_usb_dev_inst_new(
 240                         libusb_get_bus_number(devlist[i]),
 241                         libusb_get_device_address(devlist[i]), NULL);
 242         }
 243         libusb_free_device_list(devlist, 1);
 244
 245         return std_scan_complete(di, devices);
 246 }
 247
 248 static int dev_open(struct sr_dev_inst *sdi)
 249 {
 250         struct sr_dev_driver *di = sdi->driver;
 251         struct dev_context *devc;
 252         struct drv_context *drvc;
 253         struct sr_usb_dev_inst *usb;
 254         int ret;
 255
 256         drvc = di->context;
 257         usb = sdi->conn;
 258         devc = sdi->priv;
 259
 260         ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
 261         if (ret != SR_OK)
 262                 return ret;
 263
 264         ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION);
 265         if (ret < 0) {
 266                 sr_err("Unable to set USB configuration %d: %s.",
 267                        USB_CONFIGURATION, libusb_error_name(ret));
 268                 return SR_ERR;
 269         }
 270
 271         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 272         if (ret != 0) {
 273                 sr_err("Unable to claim interface: %s.",
 274                        libusb_error_name(ret));
 275                 return SR_ERR;
 276         }
 277
 278         /* Set default configuration after power on. */
 279         if (analyzer_read_status(usb->devhdl) == 0)
 280                 analyzer_configure(usb->devhdl);
 281
 282         analyzer_reset(usb->devhdl);
 283         analyzer_initialize(usb->devhdl);
 284
 285         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 286         // analyzer_set_freq(g_freq, g_freq_scale);
 287         analyzer_set_trigger_count(1);
 288         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 289         // * get_memory_size(g_memory_size)) / 100) >> 2);
 290
 291 #if 0
 292         if (g_double_mode == 1)
 293                 analyzer_set_compression(COMPRESSION_DOUBLE);
 294         else if (g_compression == 1)
 295                 analyzer_set_compression(COMPRESSION_ENABLE);
 296         else
 297 #endif
 298         analyzer_set_compression(COMPRESSION_NONE);
 299
 300         if (devc->cur_samplerate == 0) {
 301                 /* Samplerate hasn't been set. Default to 1MHz. */
 302                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 303                 devc->cur_samplerate = SR_MHZ(1);
 304         }
 305
 306         if (devc->cur_threshold == 0)
 307                 set_voltage_threshold(devc, 1.5);
 308
 309         return SR_OK;
 310 }
 311
 312 static int dev_close(struct sr_dev_inst *sdi)
 313 {
 314         struct sr_usb_dev_inst *usb;
 315
 316         usb = sdi->conn;
 317
 318         if (!usb->devhdl)
 319                 return SR_ERR_BUG;
 320
 321         sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
 322                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 323         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 324         libusb_reset_device(usb->devhdl);
 325         libusb_close(usb->devhdl);
 326         usb->devhdl = NULL;
 327
 328         return SR_OK;
 329 }
 330
 331 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 332                 const struct sr_channel_group *cg)
 333 {
 334         struct dev_context *devc;
 335         GVariant *range[2];
 336
 337         (void)cg;
 338
 339         if (!sdi)
 340                 return SR_ERR_ARG;
 341
 342         devc = sdi->priv;
 343
 344         switch (key) {
 345         case SR_CONF_SAMPLERATE:
 346                 *data = g_variant_new_uint64(devc->cur_samplerate);
 347                 break;
 348         case SR_CONF_CAPTURE_RATIO:
 349                 *data = g_variant_new_uint64(devc->capture_ratio);
 350                 break;
 351         case SR_CONF_VOLTAGE_THRESHOLD:
 352                 range[0] = g_variant_new_double(devc->cur_threshold);
 353                 range[1] = g_variant_new_double(devc->cur_threshold);
 354                 *data = g_variant_new_tuple(range, 2);
 355                 break;
 356         default:
 357                 return SR_ERR_NA;
 358         }
 359
 360         return SR_OK;
 361 }
 362
 363 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 364                 const struct sr_channel_group *cg)
 365 {
 366         struct dev_context *devc;
 367         gdouble low, high;
 368
 369         (void)cg;
 370
 371         devc = sdi->priv;
 372
 373         switch (key) {
 374         case SR_CONF_SAMPLERATE:
 375                 return zp_set_samplerate(devc, g_variant_get_uint64(data));
 376         case SR_CONF_LIMIT_SAMPLES:
 377                 return set_limit_samples(devc, g_variant_get_uint64(data));
 378         case SR_CONF_CAPTURE_RATIO:
 379                 return set_capture_ratio(devc, g_variant_get_uint64(data));
 380         case SR_CONF_VOLTAGE_THRESHOLD:
 381                 g_variant_get(data, "(dd)", &low, &high);
 382                 return set_voltage_threshold(devc, (low + high) / 2.0);
 383         default:
 384                 return SR_ERR_NA;
 385         }
 386
 387         return SR_OK;
 388 }
 389
 390 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 391                 const struct sr_channel_group *cg)
 392 {
 393         struct dev_context *devc;
 394         GVariant *gvar, *grange[2];
 395         GVariantBuilder gvb;
 396         double v;
 397         GVariant *range[2];
 398
 399         switch (key) {
 400         case SR_CONF_DEVICE_OPTIONS:
 401                 return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
 402         case SR_CONF_SAMPLERATE:
 403                 devc = sdi->priv;
 404                 if (devc->prof->max_sampling_freq == 100)
 405                         *data = std_gvar_samplerates(samplerates_100, ARRAY_SIZE(samplerates_100));
 406                 else if (devc->prof->max_sampling_freq == 200)
 407                         *data = std_gvar_samplerates(samplerates_200, ARRAY_SIZE(samplerates_200));
 408                 else {
 409                         sr_err("Internal error: Unknown max. samplerate: %d.",
 410                                devc->prof->max_sampling_freq);
 411                         return SR_ERR_ARG;
 412                 }
 413                 break;
 414         case SR_CONF_TRIGGER_MATCH:
 415                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 416                                 trigger_matches, ARRAY_SIZE(trigger_matches),
 417                                 sizeof(int32_t));
 418                 break;
 419         case SR_CONF_VOLTAGE_THRESHOLD:
 420                 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 421                 for (v = -6.0; v <= 6.0; v += 0.1) {
 422                         range[0] = g_variant_new_double(v);
 423                         range[1] = g_variant_new_double(v);
 424                         gvar = g_variant_new_tuple(range, 2);
 425                         g_variant_builder_add_value(&gvb, gvar);
 426                 }
 427                 *data = g_variant_builder_end(&gvb);
 428                 break;
 429         case SR_CONF_LIMIT_SAMPLES:
 430                 if (!sdi)
 431                         return SR_ERR_ARG;
 432                 devc = sdi->priv;
 433                 grange[0] = g_variant_new_uint64(0);
 434                 grange[1] = g_variant_new_uint64(devc->max_sample_depth);
 435                 *data = g_variant_new_tuple(grange, 2);
 436                 break;
 437         default:
 438                 return SR_ERR_NA;
 439         }
 440
 441         return SR_OK;
 442 }
 443
 444 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 445 {
 446         struct dev_context *devc;
 447         struct sr_usb_dev_inst *usb;
 448         struct sr_datafeed_packet packet;
 449         struct sr_datafeed_logic logic;
 450         unsigned int samples_read;
 451         int res;
 452         unsigned int packet_num, n;
 453         unsigned char *buf;
 454         unsigned int status;
 455         unsigned int stop_address;
 456         unsigned int now_address;
 457         unsigned int trigger_address;
 458         unsigned int trigger_offset;
 459         unsigned int triggerbar;
 460         unsigned int ramsize_trigger;
 461         unsigned int memory_size;
 462         unsigned int valid_samples;
 463         unsigned int discard;
 464         int trigger_now;
 465
 466         devc = sdi->priv;
 467
 468         if (analyzer_add_triggers(sdi) != SR_OK) {
 469                 sr_err("Failed to configure triggers.");
 470                 return SR_ERR;
 471         }
 472
 473         usb = sdi->conn;
 474
 475         set_triggerbar(devc);
 476
 477         /* Push configured settings to device. */
 478         analyzer_configure(usb->devhdl);
 479
 480         analyzer_start(usb->devhdl);
 481         sr_info("Waiting for data.");
 482         analyzer_wait_data(usb->devhdl);
 483
 484         status = analyzer_read_status(usb->devhdl);
 485         stop_address = analyzer_get_stop_address(usb->devhdl);
 486         now_address = analyzer_get_now_address(usb->devhdl);
 487         trigger_address = analyzer_get_trigger_address(usb->devhdl);
 488
 489         triggerbar = analyzer_get_triggerbar_address();
 490         ramsize_trigger = analyzer_get_ramsize_trigger_address();
 491
 492         n = get_memory_size(devc->memory_size);
 493         memory_size = n / 4;
 494
 495         sr_info("Status = 0x%x.", status);
 496         sr_info("Stop address       = 0x%x.", stop_address);
 497         sr_info("Now address        = 0x%x.", now_address);
 498         sr_info("Trigger address    = 0x%x.", trigger_address);
 499         sr_info("Triggerbar address = 0x%x.", triggerbar);
 500         sr_info("Ramsize trigger    = 0x%x.", ramsize_trigger);
 501         sr_info("Memory size        = 0x%x.", memory_size);
 502
 503         std_session_send_df_header(sdi);
 504
 505         /* Check for empty capture */
 506         if ((status & STATUS_READY) && !stop_address) {
 507                 std_session_send_df_end(sdi);
 508                 return SR_OK;
 509         }
 510
 511         buf = g_malloc(PACKET_SIZE);
 512
 513         /* Check if the trigger is in the samples we are throwing away */
 514         trigger_now = now_address == trigger_address ||
 515                 ((now_address + 1) % memory_size) == trigger_address;
 516
 517         /*
 518          * STATUS_READY doesn't clear until now_address advances past
 519          * addr 0, but for our logic, clear it in that case
 520          */
 521         if (!now_address)
 522                 status &= ~STATUS_READY;
 523
 524         analyzer_read_start(usb->devhdl);
 525
 526         /* Calculate how much data to discard */
 527         discard = 0;
 528         if (status & STATUS_READY) {
 529                 /*
 530                  * We haven't wrapped around, we need to throw away data from
 531                  * our current position to the end of the buffer.
 532                  * Additionally, the first two samples captured are always
 533                  * bogus.
 534                  */
 535                 discard += memory_size - now_address + 2;
 536                 now_address = 2;
 537         }
 538
 539         /* If we have more samples than we need, discard them */
 540         valid_samples = (stop_address - now_address) % memory_size;
 541         if (valid_samples > ramsize_trigger + triggerbar) {
 542                 discard += valid_samples - (ramsize_trigger + triggerbar);
 543                 now_address += valid_samples - (ramsize_trigger + triggerbar);
 544         }
 545
 546         sr_info("Need to discard %d samples.", discard);
 547
 548         /* Calculate how far in the trigger is */
 549         if (trigger_now)
 550                 trigger_offset = 0;
 551         else
 552                 trigger_offset = (trigger_address - now_address) % memory_size;
 553
 554         /* Recalculate the number of samples available */
 555         valid_samples = (stop_address - now_address) % memory_size;
 556
 557         /* Send the incoming transfer to the session bus. */
 558         samples_read = 0;
 559         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 560                 unsigned int len;
 561                 unsigned int buf_offset;
 562
 563                 res = analyzer_read_data(usb->devhdl, buf, PACKET_SIZE);
 564                 sr_info("Tried to read %d bytes, actually read %d bytes.",
 565                         PACKET_SIZE, res);
 566
 567                 if (discard >= PACKET_SIZE / 4) {
 568                         discard -= PACKET_SIZE / 4;
 569                         continue;
 570                 }
 571
 572                 len = PACKET_SIZE - discard * 4;
 573                 buf_offset = discard * 4;
 574                 discard = 0;
 575
 576                 /* Check if we've read all the samples */
 577                 if (samples_read + len / 4 >= valid_samples)
 578                         len = (valid_samples - samples_read) * 4;
 579                 if (!len)
 580                         break;
 581
 582                 if (samples_read < trigger_offset &&
 583                     samples_read + len / 4 > trigger_offset) {
 584                         /* Send out samples remaining before trigger */
 585                         packet.type = SR_DF_LOGIC;
 586                         packet.payload = &logic;
 587                         logic.length = (trigger_offset - samples_read) * 4;
 588                         logic.unitsize = 4;
 589                         logic.data = buf + buf_offset;
 590                         sr_session_send(sdi, &packet);
 591                         len -= logic.length;
 592                         samples_read += logic.length / 4;
 593                         buf_offset += logic.length;
 594                 }
 595
 596                 if (samples_read == trigger_offset) {
 597                         /* Send out trigger */
 598                         packet.type = SR_DF_TRIGGER;
 599                         packet.payload = NULL;
 600                         sr_session_send(sdi, &packet);
 601                 }
 602
 603                 /* Send out data (or data after trigger) */
 604                 packet.type = SR_DF_LOGIC;
 605                 packet.payload = &logic;
 606                 logic.length = len;
 607                 logic.unitsize = 4;
 608                 logic.data = buf + buf_offset;
 609                 sr_session_send(sdi, &packet);
 610                 samples_read += len / 4;
 611         }
 612         analyzer_read_stop(usb->devhdl);
 613         g_free(buf);
 614
 615         std_session_send_df_end(sdi);
 616
 617         return SR_OK;
 618 }
 619
 620 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 621 {
 622         struct sr_usb_dev_inst *usb;
 623
 624         std_session_send_df_end(sdi);
 625
 626         usb = sdi->conn;
 627         analyzer_reset(usb->devhdl);
 628         /* TODO: Need to cancel and free any queued up transfers. */
 629
 630         return SR_OK;
 631 }
 632
 633 static struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 634         .name = "zeroplus-logic-cube",
 635         .longname = "ZEROPLUS Logic Cube LAP-C series",
 636         .api_version = 1,
 637         .init = std_init,
 638         .cleanup = std_cleanup,
 639         .scan = scan,
 640         .dev_list = std_dev_list,
 641         .dev_clear = std_dev_clear,
 642         .config_get = config_get,
 643         .config_set = config_set,
 644         .config_list = config_list,
 645         .dev_open = dev_open,
 646         .dev_close = dev_close,
 647         .dev_acquisition_start = dev_acquisition_start,
 648         .dev_acquisition_stop = dev_acquisition_stop,
 649         .context = NULL,
 650 };
 651 SR_REGISTER_DEV_DRIVER(zeroplus_logic_cube_driver_info);