hardware/zeroplus-logic-cube/api.c

   1 /*
   2  * This file is part of the sigrok 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 "protocol.h"
  21
  22 #define VENDOR_NAME                     "ZEROPLUS"
  23 #define USB_INTERFACE                   0
  24 #define USB_CONFIGURATION               1
  25 #define NUM_TRIGGER_STAGES              4
  26 #define TRIGGER_TYPE                    "01"
  27 #define PACKET_SIZE                     2048    /* ?? */
  28
  29 //#define ZP_EXPERIMENTAL
  30
  31 struct zp_model {
  32         uint16_t vid;
  33         uint16_t pid;
  34         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, 0x7009, "LAP-C(16064)",  16, 64,   100},
  46         {0x0c12, 0x700a, "LAP-C(16128)",  16, 128,  200},
  47         /* TODO: We don't know anything about these.
  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         */
  52         {0x0c12, 0x700e, "LAP-C(16032)",  16, 32,   100},
  53         {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
  54         { 0, 0, 0, 0, 0, 0 }
  55 };
  56
  57 static const int32_t hwcaps[] = {
  58         SR_CONF_LOGIC_ANALYZER,
  59         SR_CONF_SAMPLERATE,
  60         SR_CONF_CAPTURE_RATIO,
  61         SR_CONF_LIMIT_SAMPLES,
  62 };
  63
  64 /*
  65  * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
  66  * We currently ignore other untested/unsupported devices here.
  67  */
  68 static const char *probe_names[] = {
  69         "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  70         "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
  71         NULL,
  72 };
  73
  74 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
  75 static struct sr_dev_driver *di = &zeroplus_logic_cube_driver_info;
  76
  77 /*
  78  * The hardware supports more samplerates than these, but these are the
  79  * options hardcoded into the vendor's Windows GUI.
  80  */
  81
  82 static const uint64_t samplerates_100[] = {
  83         SR_HZ(100),
  84         SR_HZ(500),
  85         SR_KHZ(1),
  86         SR_KHZ(5),
  87         SR_KHZ(25),
  88         SR_KHZ(50),
  89         SR_KHZ(100),
  90         SR_KHZ(200),
  91         SR_KHZ(400),
  92         SR_KHZ(800),
  93         SR_MHZ(1),
  94         SR_MHZ(10),
  95         SR_MHZ(25),
  96         SR_MHZ(50),
  97         SR_MHZ(80),
  98         SR_MHZ(100),
  99 };
 100
 101 const uint64_t samplerates_200[] = {
 102         SR_HZ(100),
 103         SR_HZ(500),
 104         SR_KHZ(1),
 105         SR_KHZ(5),
 106         SR_KHZ(25),
 107         SR_KHZ(50),
 108         SR_KHZ(100),
 109         SR_KHZ(200),
 110         SR_KHZ(400),
 111         SR_KHZ(800),
 112         SR_MHZ(1),
 113         SR_MHZ(10),
 114         SR_MHZ(25),
 115         SR_MHZ(50),
 116         SR_MHZ(80),
 117         SR_MHZ(100),
 118         SR_MHZ(150),
 119         SR_MHZ(200),
 120 };
 121
 122 static int hw_dev_close(struct sr_dev_inst *sdi);
 123
 124 #if 0
 125 static int configure_probes(const struct sr_dev_inst *sdi)
 126 {
 127         struct dev_context *devc;
 128         const struct sr_probe *probe;
 129         const GSList *l;
 130         int probe_bit, stage, i;
 131         char *tc;
 132
 133         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 134         devc = sdi->priv;
 135
 136         devc->probe_mask = 0;
 137         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 138                 devc->trigger_mask[i] = 0;
 139                 devc->trigger_value[i] = 0;
 140         }
 141
 142         stage = -1;
 143         for (l = sdi->probes; l; l = l->next) {
 144                 probe = (struct sr_probe *)l->data;
 145                 if (probe->enabled == FALSE)
 146                         continue;
 147                 probe_bit = 1 << (probe->index);
 148                 devc->probe_mask |= probe_bit;
 149
 150                 if (probe->trigger) {
 151                         stage = 0;
 152                         for (tc = probe->trigger; *tc; tc++) {
 153                                 devc->trigger_mask[stage] |= probe_bit;
 154                                 if (*tc == '1')
 155                                         devc->trigger_value[stage] |= probe_bit;
 156                                 stage++;
 157                                 if (stage > NUM_TRIGGER_STAGES)
 158                                         return SR_ERR;
 159                         }
 160                 }
 161         }
 162
 163         return SR_OK;
 164 }
 165 #endif
 166
 167 static int configure_probes(const struct sr_dev_inst *sdi)
 168 {
 169         struct dev_context *devc;
 170         const GSList *l;
 171         const struct sr_probe *probe;
 172         char *tc;
 173         int type;
 174
 175         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 176         devc = sdi->priv;
 177
 178         for (l = sdi->probes; l; l = l->next) {
 179                 probe = (struct sr_probe *)l->data;
 180                 if (probe->enabled == FALSE)
 181                         continue;
 182
 183                 if ((tc = probe->trigger)) {
 184                         switch (*tc) {
 185                         case '1':
 186                                 type = TRIGGER_HIGH;
 187                                 break;
 188                         case '0':
 189                                 type = TRIGGER_LOW;
 190                                 break;
 191 #if 0
 192                         case 'r':
 193                                 type = TRIGGER_POSEDGE;
 194                                 break;
 195                         case 'f':
 196                                 type = TRIGGER_NEGEDGE;
 197                                 break;
 198                         case 'c':
 199                                 type = TRIGGER_ANYEDGE;
 200                                 break;
 201 #endif
 202                         default:
 203                                 return SR_ERR;
 204                         }
 205                         analyzer_add_trigger(probe->index, type);
 206                         devc->trigger = 1;
 207                 }
 208         }
 209
 210         return SR_OK;
 211 }
 212
 213 SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate)
 214 {
 215         int i;
 216
 217         for (i = 0; ARRAY_SIZE(samplerates_200); i++)
 218                 if (samplerate == samplerates_200[i])
 219                         break;
 220
 221         if (i == ARRAY_SIZE(samplerates_200) || samplerate > devc->max_samplerate) {
 222                 sr_err("Unsupported samplerate: %" PRIu64 "Hz.", samplerate);
 223                 return SR_ERR_ARG;
 224         }
 225
 226         sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate);
 227
 228         if (samplerate >= SR_MHZ(1))
 229                 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 230         else if (samplerate >= SR_KHZ(1))
 231                 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
 232         else
 233                 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
 234
 235         devc->cur_samplerate = samplerate;
 236
 237         return SR_OK;
 238 }
 239
 240 static int clear_instances(void)
 241 {
 242         GSList *l;
 243         struct sr_dev_inst *sdi;
 244         struct drv_context *drvc;
 245         struct dev_context *devc;
 246
 247         drvc = di->priv;
 248         for (l = drvc->instances; l; l = l->next) {
 249                 sdi = l->data;
 250                 if (!(devc = sdi->priv)) {
 251                         /* Log error, but continue cleaning up the rest. */
 252                         sr_err("%s: sdi->priv was NULL, continuing", __func__);
 253                         continue;
 254                 }
 255                 sr_usb_dev_inst_free(devc->usb);
 256                 /* Properly close all devices... */
 257                 hw_dev_close(sdi);
 258                 /* ...and free all their memory. */
 259                 sr_dev_inst_free(sdi);
 260         }
 261         g_slist_free(drvc->instances);
 262         drvc->instances = NULL;
 263
 264         return SR_OK;
 265 }
 266
 267 static int hw_init(struct sr_context *sr_ctx)
 268 {
 269         return std_hw_init(sr_ctx, di, "zeroplus: ");
 270 }
 271
 272 static GSList *hw_scan(GSList *options)
 273 {
 274         struct sr_dev_inst *sdi;
 275         struct sr_probe *probe;
 276         struct drv_context *drvc;
 277         struct dev_context *devc;
 278         const struct zp_model *prof;
 279         struct libusb_device_descriptor des;
 280         libusb_device **devlist;
 281         GSList *devices;
 282         int ret, devcnt, i, j;
 283
 284         (void)options;
 285
 286         drvc = di->priv;
 287
 288         devices = NULL;
 289
 290         clear_instances();
 291
 292         /* Find all ZEROPLUS analyzers and add them to device list. */
 293         devcnt = 0;
 294         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 295
 296         for (i = 0; devlist[i]; i++) {
 297                 ret = libusb_get_device_descriptor(devlist[i], &des);
 298                 if (ret != 0) {
 299                         sr_err("Failed to get device descriptor: %s.",
 300                                libusb_error_name(ret));
 301                         continue;
 302                 }
 303
 304                 prof = NULL;
 305                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 306                         if (des.idVendor == zeroplus_models[j].vid &&
 307                                 des.idProduct == zeroplus_models[j].pid) {
 308                                 prof = &zeroplus_models[j];
 309                         }
 310                 }
 311                 /* Skip if the device was not found. */
 312                 if (!prof)
 313                         continue;
 314                 sr_info("Found ZEROPLUS %s.", prof->model_name);
 315
 316                 /* Register the device with libsigrok. */
 317                 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
 318                                 VENDOR_NAME, prof->model_name, NULL))) {
 319                         sr_err("%s: sr_dev_inst_new failed", __func__);
 320                         return NULL;
 321                 }
 322                 sdi->driver = di;
 323
 324                 /* Allocate memory for our private driver context. */
 325                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 326                         sr_err("Device context malloc failed.");
 327                         return NULL;
 328                 }
 329
 330                 sdi->priv = devc;
 331                 devc->prof = prof;
 332                 devc->num_channels = prof->channels;
 333 #ifdef ZP_EXPERIMENTAL
 334                 devc->max_memory_size = 128 * 1024;
 335                 devc->max_samplerate = 200;
 336 #else
 337                 devc->max_memory_size = prof->sample_depth * 1024;
 338                 devc->max_samplerate = prof->max_sampling_freq;
 339 #endif
 340                 devc->max_samplerate *= SR_MHZ(1);
 341                 devc->memory_size = MEMORY_SIZE_8K;
 342                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 343
 344                 /* Fill in probelist according to this device's profile. */
 345                 for (j = 0; j < devc->num_channels; j++) {
 346                         if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
 347                                         probe_names[j])))
 348                                 return NULL;
 349                         sdi->probes = g_slist_append(sdi->probes, probe);
 350                 }
 351
 352                 devices = g_slist_append(devices, sdi);
 353                 drvc->instances = g_slist_append(drvc->instances, sdi);
 354                 devc->usb = sr_usb_dev_inst_new(
 355                         libusb_get_bus_number(devlist[i]),
 356                         libusb_get_device_address(devlist[i]), NULL);
 357                 devcnt++;
 358
 359         }
 360         libusb_free_device_list(devlist, 1);
 361
 362         return devices;
 363 }
 364
 365 static GSList *hw_dev_list(void)
 366 {
 367         return ((struct drv_context *)(di->priv))->instances;
 368 }
 369
 370 static int hw_dev_open(struct sr_dev_inst *sdi)
 371 {
 372         struct dev_context *devc;
 373         struct drv_context *drvc;
 374         libusb_device **devlist, *dev;
 375         struct libusb_device_descriptor des;
 376         int device_count, ret, i;
 377
 378         drvc = di->priv;
 379
 380         if (!(devc = sdi->priv)) {
 381                 sr_err("%s: sdi->priv was NULL", __func__);
 382                 return SR_ERR_ARG;
 383         }
 384
 385         device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
 386                                               &devlist);
 387         if (device_count < 0) {
 388                 sr_err("Failed to retrieve device list.");
 389                 return SR_ERR;
 390         }
 391
 392         dev = NULL;
 393         for (i = 0; i < device_count; i++) {
 394                 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
 395                         sr_err("Failed to get device descriptor: %s.",
 396                                libusb_error_name(ret));
 397                         continue;
 398                 }
 399                 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
 400                     && libusb_get_device_address(devlist[i]) == devc->usb->address) {
 401                         dev = devlist[i];
 402                         break;
 403                 }
 404         }
 405         if (!dev) {
 406                 sr_err("Device on bus %d address %d disappeared!",
 407                        devc->usb->bus, devc->usb->address);
 408                 return SR_ERR;
 409         }
 410
 411         if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
 412                 sdi->status = SR_ST_ACTIVE;
 413                 sr_info("Opened device %d on %d.%d interface %d.",
 414                         sdi->index, devc->usb->bus,
 415                         devc->usb->address, USB_INTERFACE);
 416         } else {
 417                 sr_err("Failed to open device: %s.", libusb_error_name(ret));
 418                 return SR_ERR;
 419         }
 420
 421         ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
 422         if (ret < 0) {
 423                 sr_err("Unable to set USB configuration %d: %s.",
 424                        USB_CONFIGURATION, libusb_error_name(ret));
 425                 return SR_ERR;
 426         }
 427
 428         ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
 429         if (ret != 0) {
 430                 sr_err("Unable to claim interface: %s.",
 431                        libusb_error_name(ret));
 432                 return SR_ERR;
 433         }
 434
 435         /* Set default configuration after power on. */
 436         if (analyzer_read_status(devc->usb->devhdl) == 0)
 437                 analyzer_configure(devc->usb->devhdl);
 438
 439         analyzer_reset(devc->usb->devhdl);
 440         analyzer_initialize(devc->usb->devhdl);
 441
 442         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 443         // analyzer_set_freq(g_freq, g_freq_scale);
 444         analyzer_set_trigger_count(1);
 445         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 446         // * get_memory_size(g_memory_size)) / 100) >> 2);
 447
 448 #if 0
 449         if (g_double_mode == 1)
 450                 analyzer_set_compression(COMPRESSION_DOUBLE);
 451         else if (g_compression == 1)
 452                 analyzer_set_compression(COMPRESSION_ENABLE);
 453         else
 454 #endif
 455         analyzer_set_compression(COMPRESSION_NONE);
 456
 457         if (devc->cur_samplerate == 0) {
 458                 /* Samplerate hasn't been set. Default to 1MHz. */
 459                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 460                 devc->cur_samplerate = SR_MHZ(1);
 461         }
 462
 463         return SR_OK;
 464 }
 465
 466 static int hw_dev_close(struct sr_dev_inst *sdi)
 467 {
 468         struct dev_context *devc;
 469
 470         devc = sdi->priv;
 471
 472         if (!devc->usb->devhdl)
 473                 return SR_ERR;
 474
 475         sr_info("Closing device %d on %d.%d interface %d.", sdi->index,
 476                 devc->usb->bus, devc->usb->address, USB_INTERFACE);
 477         libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
 478         libusb_reset_device(devc->usb->devhdl);
 479         libusb_close(devc->usb->devhdl);
 480         devc->usb->devhdl = NULL;
 481         sdi->status = SR_ST_INACTIVE;
 482
 483         return SR_OK;
 484 }
 485
 486 static int hw_cleanup(void)
 487 {
 488         struct drv_context *drvc;
 489
 490         if (!(drvc = di->priv))
 491                 return SR_OK;
 492
 493         clear_instances();
 494
 495         return SR_OK;
 496 }
 497
 498 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
 499 {
 500         struct dev_context *devc;
 501
 502         switch (id) {
 503         case SR_CONF_SAMPLERATE:
 504                 if (sdi) {
 505                         devc = sdi->priv;
 506                         *data = g_variant_new_uint64(devc->cur_samplerate);
 507                         sr_spew("Returning samplerate: %" PRIu64 "Hz.",
 508                                 devc->cur_samplerate);
 509                 } else
 510                         return SR_ERR;
 511                 break;
 512         default:
 513                 return SR_ERR_ARG;
 514         }
 515
 516         return SR_OK;
 517 }
 518
 519 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
 520 {
 521         struct dev_context *devc;
 522
 523         if (!sdi) {
 524                 sr_err("%s: sdi was NULL", __func__);
 525                 return SR_ERR_ARG;
 526         }
 527
 528         if (!(devc = sdi->priv)) {
 529                 sr_err("%s: sdi->priv was NULL", __func__);
 530                 return SR_ERR_ARG;
 531         }
 532
 533         switch (id) {
 534         case SR_CONF_SAMPLERATE:
 535                 return zp_set_samplerate(devc, g_variant_get_uint64(data));
 536         case SR_CONF_LIMIT_SAMPLES:
 537                 return set_limit_samples(devc, g_variant_get_uint64(data));
 538         case SR_CONF_CAPTURE_RATIO:
 539                 return set_capture_ratio(devc, g_variant_get_uint64(data));
 540         default:
 541                 return SR_ERR;
 542         }
 543
 544         return SR_OK;
 545 }
 546
 547 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
 548 {
 549         struct dev_context *devc;
 550         GVariant *gvar;
 551         GVariantBuilder gvb;
 552
 553         switch (key) {
 554         case SR_CONF_DEVICE_OPTIONS:
 555                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 556                                 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
 557                 break;
 558         case SR_CONF_SAMPLERATE:
 559                 devc = sdi->priv;
 560                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 561                 if (devc->prof->max_sampling_freq == 100) {
 562                         gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
 563                                         samplerates_100, ARRAY_SIZE(samplerates_100),
 564                                         sizeof(uint64_t));
 565                 } else if (devc->prof->max_sampling_freq == 200) {
 566                         gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
 567                                         samplerates_200, ARRAY_SIZE(samplerates_200),
 568                                         sizeof(uint64_t));
 569                 } else {
 570                         sr_err("Internal error: Unknown max. samplerate: %d.",
 571                                devc->prof->max_sampling_freq);
 572                         return SR_ERR_ARG;
 573                 }
 574                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 575                 *data = g_variant_builder_end(&gvb);
 576                 break;
 577         case SR_CONF_TRIGGER_TYPE:
 578                 *data = g_variant_new_string(TRIGGER_TYPE);
 579                 break;
 580         default:
 581                 return SR_ERR_ARG;
 582         }
 583
 584         return SR_OK;
 585 }
 586
 587 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 588                 void *cb_data)
 589 {
 590         struct sr_datafeed_packet packet;
 591         struct sr_datafeed_logic logic;
 592         //uint64_t samples_read;
 593         int res;
 594         unsigned int packet_num, n;
 595         unsigned char *buf;
 596         struct dev_context *devc;
 597
 598         if (!(devc = sdi->priv)) {
 599                 sr_err("%s: sdi->priv was NULL", __func__);
 600                 return SR_ERR_ARG;
 601         }
 602
 603         if (configure_probes(sdi) != SR_OK) {
 604                 sr_err("Failed to configure probes.");
 605                 return SR_ERR;
 606         }
 607
 608         set_triggerbar(devc);
 609
 610         /* Push configured settings to device. */
 611         analyzer_configure(devc->usb->devhdl);
 612
 613         analyzer_start(devc->usb->devhdl);
 614         sr_info("Waiting for data.");
 615         analyzer_wait_data(devc->usb->devhdl);
 616
 617         sr_info("Stop address    = 0x%x.",
 618                 analyzer_get_stop_address(devc->usb->devhdl));
 619         sr_info("Now address     = 0x%x.",
 620                 analyzer_get_now_address(devc->usb->devhdl));
 621         sr_info("Trigger address = 0x%x.",
 622                 analyzer_get_trigger_address(devc->usb->devhdl));
 623
 624         /* Send header packet to the session bus. */
 625         std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
 626
 627         if (!(buf = g_try_malloc(PACKET_SIZE))) {
 628                 sr_err("Packet buffer malloc failed.");
 629                 return SR_ERR_MALLOC;
 630         }
 631
 632         //samples_read = 0;
 633         analyzer_read_start(devc->usb->devhdl);
 634         /* Send the incoming transfer to the session bus. */
 635         n = get_memory_size(devc->memory_size);
 636         if (devc->max_memory_size * 4 < n)
 637                 n = devc->max_memory_size * 4;
 638         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 639                 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
 640                 sr_info("Tried to read %d bytes, actually read %d bytes.",
 641                         PACKET_SIZE, res);
 642
 643                 packet.type = SR_DF_LOGIC;
 644                 packet.payload = &logic;
 645                 logic.length = PACKET_SIZE;
 646                 logic.unitsize = 4;
 647                 logic.data = buf;
 648                 sr_session_send(cb_data, &packet);
 649                 //samples_read += res / 4;
 650         }
 651         analyzer_read_stop(devc->usb->devhdl);
 652         g_free(buf);
 653
 654         packet.type = SR_DF_END;
 655         sr_session_send(cb_data, &packet);
 656
 657         return SR_OK;
 658 }
 659
 660 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
 661 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 662 {
 663         struct sr_datafeed_packet packet;
 664         struct dev_context *devc;
 665
 666         packet.type = SR_DF_END;
 667         sr_session_send(cb_data, &packet);
 668
 669         if (!(devc = sdi->priv)) {
 670                 sr_err("%s: sdi->priv was NULL", __func__);
 671                 return SR_ERR_BUG;
 672         }
 673
 674         analyzer_reset(devc->usb->devhdl);
 675         /* TODO: Need to cancel and free any queued up transfers. */
 676
 677         return SR_OK;
 678 }
 679
 680 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 681         .name = "zeroplus-logic-cube",
 682         .longname = "ZEROPLUS Logic Cube LAP-C series",
 683         .api_version = 1,
 684         .init = hw_init,
 685         .cleanup = hw_cleanup,
 686         .scan = hw_scan,
 687         .dev_list = hw_dev_list,
 688         .dev_clear = hw_cleanup,
 689         .config_get = config_get,
 690         .config_set = config_set,
 691         .config_list = config_list,
 692         .dev_open = hw_dev_open,
 693         .dev_close = hw_dev_close,
 694         .dev_acquisition_start = hw_dev_acquisition_start,
 695         .dev_acquisition_stop = hw_dev_acquisition_stop,
 696         .priv = NULL,
 697 };