hardware/zeroplus-logic-cube/zeroplus.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 <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <sys/time.h>
  24 #include <inttypes.h>
  25 #include <glib.h>
  26 #include <libusb.h>
  27 #include "libsigrok.h"
  28 #include "libsigrok-internal.h"
  29 #include "analyzer.h"
  30 #include "protocol.h"
  31
  32 #define USB_VENDOR                      0x0c12
  33
  34 #define VENDOR_NAME                     "ZEROPLUS"
  35 #define MODEL_NAME                      "Logic Cube LAP-C"
  36 #define MODEL_VERSION                   NULL
  37
  38 #define NUM_PROBES                      16
  39 #define USB_INTERFACE                   0
  40 #define USB_CONFIGURATION               1
  41 #define NUM_TRIGGER_STAGES              4
  42 #define TRIGGER_TYPE                    "01"
  43
  44 #define PACKET_SIZE                     2048    /* ?? */
  45
  46 //#define ZP_EXPERIMENTAL
  47
  48 typedef struct {
  49         unsigned short vid;
  50         unsigned short pid;
  51         char *model_name;
  52         unsigned int channels;
  53         unsigned int sample_depth;      /* In Ksamples/channel */
  54         unsigned int max_sampling_freq;
  55 } model_t;
  56
  57 /*
  58  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
  59  * same 128K sample depth.
  60  */
  61 static model_t zeroplus_models[] = {
  62         {0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
  63         {0x0c12, 0x700A, "LAP-C(16128)",  16, 128,  200},
  64         /* TODO: we don't know anything about these
  65         {0x0c12, 0x700B, "LAP-C(32128)",  32, 128,  200},
  66         {0x0c12, 0x700C, "LAP-C(321000)", 32, 1024, 200},
  67         {0x0c12, 0x700D, "LAP-C(322000)", 32, 2048, 200},
  68         */
  69         {0x0c12, 0x700E, "LAP-C(16032)",  16, 32,   100},
  70         {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
  71         { 0, 0, 0, 0, 0, 0 }
  72 };
  73
  74 static const int hwcaps[] = {
  75         SR_CONF_LOGIC_ANALYZER,
  76         SR_CONF_SAMPLERATE,
  77         SR_CONF_CAPTURE_RATIO,
  78
  79         /* These are really implemented in the driver, not the hardware. */
  80         SR_CONF_LIMIT_SAMPLES,
  81         0,
  82 };
  83
  84 /*
  85  * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
  86  * We currently ignore other untested/unsupported devices here.
  87  */
  88 static const char *probe_names[NUM_PROBES + 1] = {
  89         "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  90         "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
  91         NULL,
  92 };
  93
  94 /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
  95 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
  96 static struct sr_dev_driver *di = &zeroplus_logic_cube_driver_info;
  97
  98 /*
  99  * The hardware supports more samplerates than these, but these are the
 100  * options hardcoded into the vendor's Windows GUI.
 101  */
 102
 103 /*
 104  * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
 105  * that high.
 106  */
 107 static const uint64_t supported_samplerates[] = {
 108         SR_HZ(100),
 109         SR_HZ(500),
 110         SR_KHZ(1),
 111         SR_KHZ(5),
 112         SR_KHZ(25),
 113         SR_KHZ(50),
 114         SR_KHZ(100),
 115         SR_KHZ(200),
 116         SR_KHZ(400),
 117         SR_KHZ(800),
 118         SR_MHZ(1),
 119         SR_MHZ(10),
 120         SR_MHZ(25),
 121         SR_MHZ(50),
 122         SR_MHZ(80),
 123         SR_MHZ(100),
 124         SR_MHZ(150),
 125         SR_MHZ(200),
 126         0,
 127 };
 128
 129 static const struct sr_samplerates samplerates = {
 130         .low  = 0,
 131         .high = 0,
 132         .step = 0,
 133         .list = supported_samplerates,
 134 };
 135
 136 /* Private, per-device-instance driver context. */
 137 struct dev_context {
 138         uint64_t cur_samplerate;
 139         uint64_t max_samplerate;
 140         uint64_t limit_samples;
 141         int num_channels; /* TODO: This isn't initialized before it's needed :( */
 142         int memory_size;
 143         unsigned int max_memory_size;
 144         //uint8_t probe_mask;
 145         //uint8_t trigger_mask[NUM_TRIGGER_STAGES];
 146         //uint8_t trigger_value[NUM_TRIGGER_STAGES];
 147         // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
 148         int trigger;
 149         unsigned int capture_ratio;
 150
 151         /* TODO: this belongs in the device instance */
 152         struct sr_usb_dev_inst *usb;
 153 };
 154
 155 static int hw_dev_close(struct sr_dev_inst *sdi);
 156
 157 static unsigned int get_memory_size(int type)
 158 {
 159         if (type == MEMORY_SIZE_8K)
 160                 return 8 * 1024;
 161         else if (type == MEMORY_SIZE_64K)
 162                 return 64 * 1024;
 163         else if (type == MEMORY_SIZE_128K)
 164                 return 128 * 1024;
 165         else if (type == MEMORY_SIZE_512K)
 166                 return 512 * 1024;
 167         else
 168                 return 0;
 169 }
 170
 171 #if 0
 172 static int configure_probes(const struct sr_dev_inst *sdi)
 173 {
 174         struct dev_context *devc;
 175         const struct sr_probe *probe;
 176         const GSList *l;
 177         int probe_bit, stage, i;
 178         char *tc;
 179
 180         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 181         devc = sdi->priv;
 182
 183         devc->probe_mask = 0;
 184         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 185                 devc->trigger_mask[i] = 0;
 186                 devc->trigger_value[i] = 0;
 187         }
 188
 189         stage = -1;
 190         for (l = sdi->probes; l; l = l->next) {
 191                 probe = (struct sr_probe *)l->data;
 192                 if (probe->enabled == FALSE)
 193                         continue;
 194                 probe_bit = 1 << (probe->index);
 195                 devc->probe_mask |= probe_bit;
 196
 197                 if (probe->trigger) {
 198                         stage = 0;
 199                         for (tc = probe->trigger; *tc; tc++) {
 200                                 devc->trigger_mask[stage] |= probe_bit;
 201                                 if (*tc == '1')
 202                                         devc->trigger_value[stage] |= probe_bit;
 203                                 stage++;
 204                                 if (stage > NUM_TRIGGER_STAGES)
 205                                         return SR_ERR;
 206                         }
 207                 }
 208         }
 209
 210         return SR_OK;
 211 }
 212 #endif
 213
 214 static int configure_probes(const struct sr_dev_inst *sdi)
 215 {
 216         struct dev_context *devc;
 217         const GSList *l;
 218         const struct sr_probe *probe;
 219         char *tc;
 220         int type;
 221
 222         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 223         devc = sdi->priv;
 224
 225         for (l = sdi->probes; l; l = l->next) {
 226                 probe = (struct sr_probe *)l->data;
 227                 if (probe->enabled == FALSE)
 228                         continue;
 229
 230                 if ((tc = probe->trigger)) {
 231                         switch (*tc) {
 232                         case '1':
 233                                 type = TRIGGER_HIGH;
 234                                 break;
 235                         case '0':
 236                                 type = TRIGGER_LOW;
 237                                 break;
 238 #if 0
 239                         case 'r':
 240                                 type = TRIGGER_POSEDGE;
 241                                 break;
 242                         case 'f':
 243                                 type = TRIGGER_NEGEDGE;
 244                                 break;
 245                         case 'c':
 246                                 type = TRIGGER_ANYEDGE;
 247                                 break;
 248 #endif
 249                         default:
 250                                 return SR_ERR;
 251                         }
 252                         analyzer_add_trigger(probe->index, type);
 253                         devc->trigger = 1;
 254                 }
 255         }
 256
 257         return SR_OK;
 258 }
 259
 260 static int clear_instances(void)
 261 {
 262         GSList *l;
 263         struct sr_dev_inst *sdi;
 264         struct drv_context *drvc;
 265         struct dev_context *devc;
 266
 267         drvc = di->priv;
 268         for (l = drvc->instances; l; l = l->next) {
 269                 sdi = l->data;
 270                 if (!(devc = sdi->priv)) {
 271                         /* Log error, but continue cleaning up the rest. */
 272                         sr_err("%s: sdi->priv was NULL, continuing", __func__);
 273                         continue;
 274                 }
 275                 sr_usb_dev_inst_free(devc->usb);
 276                 /* Properly close all devices... */
 277                 hw_dev_close(sdi);
 278                 /* ...and free all their memory. */
 279                 sr_dev_inst_free(sdi);
 280         }
 281         g_slist_free(drvc->instances);
 282         drvc->instances = NULL;
 283
 284         return SR_OK;
 285 }
 286
 287 static int hw_init(struct sr_context *sr_ctx)
 288 {
 289         return std_hw_init(sr_ctx, di, "zeroplus: ");
 290 }
 291
 292 static GSList *hw_scan(GSList *options)
 293 {
 294         struct sr_dev_inst *sdi;
 295         struct sr_probe *probe;
 296         struct drv_context *drvc;
 297         struct dev_context *devc;
 298         model_t *prof;
 299         struct libusb_device_descriptor des;
 300         libusb_device **devlist;
 301         GSList *devices;
 302         int ret, devcnt, i, j;
 303
 304         (void)options;
 305
 306         drvc = di->priv;
 307
 308         devices = NULL;
 309
 310         clear_instances();
 311
 312         /* Find all ZEROPLUS analyzers and add them to device list. */
 313         devcnt = 0;
 314         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 315
 316         for (i = 0; devlist[i]; i++) {
 317                 ret = libusb_get_device_descriptor(devlist[i], &des);
 318                 if (ret != 0) {
 319                         sr_err("Failed to get device descriptor: %s.",
 320                                libusb_error_name(ret));
 321                         continue;
 322                 }
 323
 324                 prof = NULL;
 325                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 326                         if (des.idVendor == zeroplus_models[j].vid &&
 327                                 des.idProduct == zeroplus_models[j].pid) {
 328                                 prof = &zeroplus_models[j];
 329                         }
 330                 }
 331                 /* Skip if the device was not found */
 332                 if (!prof)
 333                         continue;
 334                 sr_info("Found ZEROPLUS model %s.", prof->model_name);
 335
 336                 /* Register the device with libsigrok. */
 337                 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
 338                                 VENDOR_NAME, prof->model_name, NULL))) {
 339                         sr_err("%s: sr_dev_inst_new failed", __func__);
 340                         return NULL;
 341                 }
 342                 sdi->driver = di;
 343
 344                 /* Allocate memory for our private driver context. */
 345                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 346                         sr_err("Device context malloc failed.");
 347                         return NULL;
 348                 }
 349                 sdi->priv = devc;
 350                 devc->num_channels = prof->channels;
 351 #ifdef ZP_EXPERIMENTAL
 352                 devc->max_memory_size = 128 * 1024;
 353                 devc->max_samplerate = 200;
 354 #else
 355                 devc->max_memory_size = prof->sample_depth * 1024;
 356                 devc->max_samplerate = prof->max_sampling_freq;
 357 #endif
 358                 devc->max_samplerate *= SR_MHZ(1);
 359                 devc->memory_size = MEMORY_SIZE_8K;
 360                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 361
 362                 /* Fill in probelist according to this device's profile. */
 363                 for (j = 0; j < devc->num_channels; j++) {
 364                         if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
 365                                         probe_names[j])))
 366                                 return NULL;
 367                         sdi->probes = g_slist_append(sdi->probes, probe);
 368                 }
 369
 370                 devices = g_slist_append(devices, sdi);
 371                 drvc->instances = g_slist_append(drvc->instances, sdi);
 372                 devc->usb = sr_usb_dev_inst_new(
 373                         libusb_get_bus_number(devlist[i]),
 374                         libusb_get_device_address(devlist[i]), NULL);
 375                 devcnt++;
 376
 377         }
 378         libusb_free_device_list(devlist, 1);
 379
 380         return devices;
 381 }
 382
 383 static GSList *hw_dev_list(void)
 384 {
 385         return ((struct drv_context *)(di->priv))->instances;
 386 }
 387
 388 static int hw_dev_open(struct sr_dev_inst *sdi)
 389 {
 390         struct dev_context *devc;
 391         struct drv_context *drvc = di->priv;
 392         libusb_device **devlist, *dev;
 393         struct libusb_device_descriptor des;
 394         int device_count, ret, i;
 395
 396         if (!(devc = sdi->priv)) {
 397                 sr_err("%s: sdi->priv was NULL", __func__);
 398                 return SR_ERR_ARG;
 399         }
 400
 401         device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
 402                                               &devlist);
 403         if (device_count < 0) {
 404                 sr_err("Failed to retrieve device list.");
 405                 return SR_ERR;
 406         }
 407
 408         dev = NULL;
 409         for (i = 0; i < device_count; i++) {
 410                 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
 411                         sr_err("Failed to get device descriptor: %s.",
 412                                libusb_error_name(ret));
 413                         continue;
 414                 }
 415                 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
 416                     && libusb_get_device_address(devlist[i]) == devc->usb->address) {
 417                         dev = devlist[i];
 418                         break;
 419                 }
 420         }
 421         if (!dev) {
 422                 sr_err("Device on bus %d address %d disappeared!",
 423                        devc->usb->bus, devc->usb->address);
 424                 return SR_ERR;
 425         }
 426
 427         if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
 428                 sdi->status = SR_ST_ACTIVE;
 429                 sr_info("Opened device %d on %d.%d interface %d.",
 430                         sdi->index, devc->usb->bus,
 431                         devc->usb->address, USB_INTERFACE);
 432         } else {
 433                 sr_err("Failed to open device: %s.", libusb_error_name(ret));
 434                 return SR_ERR;
 435         }
 436
 437         ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
 438         if (ret < 0) {
 439                 sr_err("Unable to set USB configuration %d: %s.",
 440                        USB_CONFIGURATION, libusb_error_name(ret));
 441                 return SR_ERR;
 442         }
 443
 444         ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
 445         if (ret != 0) {
 446                 sr_err("Unable to claim interface: %s.",
 447                        libusb_error_name(ret));
 448                 return SR_ERR;
 449         }
 450
 451         /* Set default configuration after power on */
 452         if (analyzer_read_status(devc->usb->devhdl) == 0)
 453                 analyzer_configure(devc->usb->devhdl);
 454
 455         analyzer_reset(devc->usb->devhdl);
 456         analyzer_initialize(devc->usb->devhdl);
 457
 458         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 459         // analyzer_set_freq(g_freq, g_freq_scale);
 460         analyzer_set_trigger_count(1);
 461         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 462         // * get_memory_size(g_memory_size)) / 100) >> 2);
 463
 464 #if 0
 465         if (g_double_mode == 1)
 466                 analyzer_set_compression(COMPRESSION_DOUBLE);
 467         else if (g_compression == 1)
 468                 analyzer_set_compression(COMPRESSION_ENABLE);
 469         else
 470 #endif
 471         analyzer_set_compression(COMPRESSION_NONE);
 472
 473         if (devc->cur_samplerate == 0) {
 474                 /* Samplerate hasn't been set. Default to 1MHz. */
 475                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 476                 devc->cur_samplerate = SR_MHZ(1);
 477         }
 478
 479         return SR_OK;
 480 }
 481
 482 static int hw_dev_close(struct sr_dev_inst *sdi)
 483 {
 484         struct dev_context *devc;
 485
 486         devc = sdi->priv;
 487
 488         if (!devc->usb->devhdl)
 489                 return SR_ERR;
 490
 491         sr_info("Closing device %d on %d.%d interface %d.", sdi->index,
 492                 devc->usb->bus, devc->usb->address, USB_INTERFACE);
 493         libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
 494         libusb_reset_device(devc->usb->devhdl);
 495         libusb_close(devc->usb->devhdl);
 496         devc->usb->devhdl = NULL;
 497         sdi->status = SR_ST_INACTIVE;
 498
 499         return SR_OK;
 500 }
 501
 502 static int hw_cleanup(void)
 503 {
 504         struct drv_context *drvc;
 505
 506         if (!(drvc = di->priv))
 507                 return SR_OK;
 508
 509         clear_instances();
 510
 511         return SR_OK;
 512 }
 513
 514 static int config_get(int id, const void **data, const struct sr_dev_inst *sdi)
 515 {
 516         struct dev_context *devc;
 517
 518         switch (id) {
 519         case SR_CONF_SAMPLERATE:
 520                 if (sdi) {
 521                         devc = sdi->priv;
 522                         *data = &devc->cur_samplerate;
 523                         sr_spew("Returning samplerate: %" PRIu64 "Hz.",
 524                                 devc->cur_samplerate);
 525                 } else
 526                         return SR_ERR;
 527                 break;
 528         default:
 529                 return SR_ERR_ARG;
 530         }
 531
 532         return SR_OK;
 533 }
 534
 535 static int set_samplerate(struct dev_context *devc, uint64_t samplerate)
 536 {
 537         int i;
 538
 539         for (i = 0; supported_samplerates[i]; i++)
 540                 if (samplerate == supported_samplerates[i])
 541                         break;
 542
 543         if (!supported_samplerates[i] || samplerate > devc->max_samplerate) {
 544                 sr_err("Unsupported samplerate.");
 545                 return SR_ERR_ARG;
 546         }
 547
 548         sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate);
 549
 550         if (samplerate >= SR_MHZ(1))
 551                 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 552         else if (samplerate >= SR_KHZ(1))
 553                 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
 554         else
 555                 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
 556
 557         devc->cur_samplerate = samplerate;
 558
 559         return SR_OK;
 560 }
 561
 562 static int set_limit_samples(struct dev_context *devc, uint64_t samples)
 563 {
 564         devc->limit_samples = samples;
 565
 566         if (samples <= 2 * 1024)
 567                 devc->memory_size = MEMORY_SIZE_8K;
 568         else if (samples <= 16 * 1024)
 569                 devc->memory_size = MEMORY_SIZE_64K;
 570         else if (samples <= 32 * 1024 ||
 571                  devc->max_memory_size <= 32 * 1024)
 572                 devc->memory_size = MEMORY_SIZE_128K;
 573         else
 574                 devc->memory_size = MEMORY_SIZE_512K;
 575
 576         sr_info("Setting memory size to %dK.",
 577                 get_memory_size(devc->memory_size) / 1024);
 578
 579         analyzer_set_memory_size(devc->memory_size);
 580
 581         return SR_OK;
 582 }
 583
 584 static int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
 585 {
 586         if (ratio > 100) {
 587                 sr_err("Invalid capture ratio: %" PRIu64 ".", ratio);
 588                 return SR_ERR_ARG;
 589         }
 590
 591         devc->capture_ratio = ratio;
 592
 593         sr_info("Setting capture ratio to %d%%.", devc->capture_ratio);
 594
 595         return SR_OK;
 596 }
 597
 598 static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
 599 {
 600         struct dev_context *devc;
 601
 602         if (!sdi) {
 603                 sr_err("%s: sdi was NULL", __func__);
 604                 return SR_ERR_ARG;
 605         }
 606
 607         if (!(devc = sdi->priv)) {
 608                 sr_err("%s: sdi->priv was NULL", __func__);
 609                 return SR_ERR_ARG;
 610         }
 611
 612         switch (id) {
 613         case SR_CONF_SAMPLERATE:
 614                 return set_samplerate(devc, *(const uint64_t *)value);
 615         case SR_CONF_LIMIT_SAMPLES:
 616                 return set_limit_samples(devc, *(const uint64_t *)value);
 617         case SR_CONF_CAPTURE_RATIO:
 618                 return set_capture_ratio(devc, *(const uint64_t *)value);
 619         default:
 620                 return SR_ERR;
 621         }
 622 }
 623
 624 static int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
 625 {
 626         (void)sdi;
 627
 628         switch (key) {
 629         case SR_CONF_DEVICE_OPTIONS:
 630                 *data = hwcaps;
 631                 break;
 632         case SR_CONF_SAMPLERATE:
 633                 *data = &samplerates;
 634                 break;
 635         case SR_CONF_TRIGGER_TYPE:
 636                 *data = TRIGGER_TYPE;
 637                 break;
 638         default:
 639                 return SR_ERR_ARG;
 640         }
 641
 642         return SR_OK;
 643 }
 644
 645 static void set_triggerbar(struct dev_context *devc)
 646 {
 647         unsigned int ramsize;
 648         unsigned int n;
 649         unsigned int triggerbar;
 650
 651         ramsize = get_memory_size(devc->memory_size) / 4;
 652         if (devc->trigger) {
 653                 n = ramsize;
 654                 if (devc->max_memory_size < n)
 655                         n = devc->max_memory_size;
 656                 if (devc->limit_samples < n)
 657                         n = devc->limit_samples;
 658                 n = n * devc->capture_ratio / 100;
 659                 if (n > ramsize - 8)
 660                         triggerbar = ramsize - 8;
 661                 else
 662                         triggerbar = n;
 663         } else {
 664                 triggerbar = 0;
 665         }
 666         analyzer_set_triggerbar_address(triggerbar);
 667         analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
 668
 669         sr_dbg("triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
 670         sr_dbg("ramsize_triggerbar_address = %d(0x%x)",
 671                ramsize - triggerbar, ramsize - triggerbar);
 672 }
 673
 674 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 675                 void *cb_data)
 676 {
 677         struct sr_datafeed_packet packet;
 678         struct sr_datafeed_logic logic;
 679         struct sr_datafeed_header header;
 680         //uint64_t samples_read;
 681         int res;
 682         unsigned int packet_num;
 683         unsigned int n;
 684         unsigned char *buf;
 685         struct dev_context *devc;
 686
 687         if (!(devc = sdi->priv)) {
 688                 sr_err("%s: sdi->priv was NULL", __func__);
 689                 return SR_ERR_ARG;
 690         }
 691
 692         if (configure_probes(sdi) != SR_OK) {
 693                 sr_err("Failed to configure probes.");
 694                 return SR_ERR;
 695         }
 696
 697         set_triggerbar(devc);
 698
 699         /* push configured settings to device */
 700         analyzer_configure(devc->usb->devhdl);
 701
 702         analyzer_start(devc->usb->devhdl);
 703         sr_info("Waiting for data.");
 704         analyzer_wait_data(devc->usb->devhdl);
 705
 706         sr_info("Stop address    = 0x%x.",
 707                 analyzer_get_stop_address(devc->usb->devhdl));
 708         sr_info("Now address     = 0x%x.",
 709                 analyzer_get_now_address(devc->usb->devhdl));
 710         sr_info("Trigger address = 0x%x.",
 711                 analyzer_get_trigger_address(devc->usb->devhdl));
 712
 713         packet.type = SR_DF_HEADER;
 714         packet.payload = &header;
 715         header.feed_version = 1;
 716         gettimeofday(&header.starttime, NULL);
 717         sr_session_send(cb_data, &packet);
 718
 719         if (!(buf = g_try_malloc(PACKET_SIZE))) {
 720                 sr_err("Packet buffer malloc failed.");
 721                 return SR_ERR_MALLOC;
 722         }
 723
 724         //samples_read = 0;
 725         analyzer_read_start(devc->usb->devhdl);
 726         /* Send the incoming transfer to the session bus. */
 727         n = get_memory_size(devc->memory_size);
 728         if (devc->max_memory_size * 4 < n)
 729                 n = devc->max_memory_size * 4;
 730         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 731                 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
 732                 sr_info("Tried to read %d bytes, actually read %d bytes.",
 733                         PACKET_SIZE, res);
 734
 735                 packet.type = SR_DF_LOGIC;
 736                 packet.payload = &logic;
 737                 logic.length = PACKET_SIZE;
 738                 logic.unitsize = 4;
 739                 logic.data = buf;
 740                 sr_session_send(cb_data, &packet);
 741                 //samples_read += res / 4;
 742         }
 743         analyzer_read_stop(devc->usb->devhdl);
 744         g_free(buf);
 745
 746         packet.type = SR_DF_END;
 747         sr_session_send(cb_data, &packet);
 748
 749         return SR_OK;
 750 }
 751
 752 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
 753 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 754 {
 755         struct sr_datafeed_packet packet;
 756         struct dev_context *devc;
 757
 758         packet.type = SR_DF_END;
 759         sr_session_send(cb_data, &packet);
 760
 761         if (!(devc = sdi->priv)) {
 762                 sr_err("%s: sdi->priv was NULL", __func__);
 763                 return SR_ERR_BUG;
 764         }
 765
 766         analyzer_reset(devc->usb->devhdl);
 767         /* TODO: Need to cancel and free any queued up transfers. */
 768
 769         return SR_OK;
 770 }
 771
 772 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 773         .name = "zeroplus-logic-cube",
 774         .longname = "ZEROPLUS Logic Cube LAP-C series",
 775         .api_version = 1,
 776         .init = hw_init,
 777         .cleanup = hw_cleanup,
 778         .scan = hw_scan,
 779         .dev_list = hw_dev_list,
 780         .dev_clear = hw_cleanup,
 781         .config_get = config_get,
 782         .config_set = config_set,
 783         .config_list = config_list,
 784         .dev_open = hw_dev_open,
 785         .dev_close = hw_dev_close,
 786         .dev_acquisition_start = hw_dev_acquisition_start,
 787         .dev_acquisition_stop = hw_dev_acquisition_stop,
 788         .priv = NULL,
 789 };