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
  31 #define USB_VENDOR                      0x0c12
  32
  33 #define VENDOR_NAME                     "ZEROPLUS"
  34 #define MODEL_NAME                      "Logic Cube LAP-C"
  35 #define MODEL_VERSION                   NULL
  36
  37 #define NUM_PROBES                      16
  38 #define USB_INTERFACE                   0
  39 #define USB_CONFIGURATION               1
  40 #define NUM_TRIGGER_STAGES              4
  41 #define TRIGGER_TYPE                    "01"
  42
  43 #define PACKET_SIZE                     2048    /* ?? */
  44
  45 //#define ZP_EXPERIMENTAL
  46
  47 typedef struct {
  48         unsigned short vid;
  49         unsigned short pid;
  50         char *model_name;
  51         unsigned int channels;
  52         unsigned int sample_depth;      /* In Ksamples/channel */
  53         unsigned int max_sampling_freq;
  54 } model_t;
  55
  56 /*
  57  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
  58  * same 128K sample depth.
  59  */
  60 static model_t zeroplus_models[] = {
  61         {0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
  62         {0x0c12, 0x700A, "LAP-C(16128)",  16, 128,  200},
  63         /* TODO: we don't know anything about these
  64         {0x0c12, 0x700B, "LAP-C(32128)",  32, 128,  200},
  65         {0x0c12, 0x700C, "LAP-C(321000)", 32, 1024, 200},
  66         {0x0c12, 0x700D, "LAP-C(322000)", 32, 2048, 200},
  67         */
  68         {0x0c12, 0x700E, "LAP-C(16032)",  16, 32,   100},
  69         {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
  70         { 0, 0, 0, 0, 0, 0 }
  71 };
  72
  73 static const int hwcaps[] = {
  74         SR_CONF_LOGIC_ANALYZER,
  75         SR_CONF_SAMPLERATE,
  76         SR_CONF_CAPTURE_RATIO,
  77
  78         /* These are really implemented in the driver, not the hardware. */
  79         SR_CONF_LIMIT_SAMPLES,
  80         0,
  81 };
  82
  83 /*
  84  * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
  85  * We currently ignore other untested/unsupported devices here.
  86  */
  87 static const char *probe_names[NUM_PROBES + 1] = {
  88         "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  89         "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
  90         NULL,
  91 };
  92
  93 /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
  94 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
  95 static struct sr_dev_driver *di = &zeroplus_logic_cube_driver_info;
  96
  97 /*
  98  * The hardware supports more samplerates than these, but these are the
  99  * options hardcoded into the vendor's Windows GUI.
 100  */
 101
 102 /*
 103  * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
 104  * that high.
 105  */
 106 static const uint64_t supported_samplerates[] = {
 107         SR_HZ(100),
 108         SR_HZ(500),
 109         SR_KHZ(1),
 110         SR_KHZ(5),
 111         SR_KHZ(25),
 112         SR_KHZ(50),
 113         SR_KHZ(100),
 114         SR_KHZ(200),
 115         SR_KHZ(400),
 116         SR_KHZ(800),
 117         SR_MHZ(1),
 118         SR_MHZ(10),
 119         SR_MHZ(25),
 120         SR_MHZ(50),
 121         SR_MHZ(80),
 122         SR_MHZ(100),
 123         SR_MHZ(150),
 124         SR_MHZ(200),
 125         0,
 126 };
 127
 128 static const struct sr_samplerates samplerates = {
 129         0,
 130         0,
 131         0,
 132         supported_samplerates,
 133 };
 134
 135 /* Private, per-device-instance driver context. */
 136 struct dev_context {
 137         uint64_t cur_samplerate;
 138         uint64_t max_samplerate;
 139         uint64_t limit_samples;
 140         int num_channels; /* TODO: This isn't initialized before it's needed :( */
 141         int memory_size;
 142         unsigned int max_memory_size;
 143         //uint8_t probe_mask;
 144         //uint8_t trigger_mask[NUM_TRIGGER_STAGES];
 145         //uint8_t trigger_value[NUM_TRIGGER_STAGES];
 146         // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
 147         int trigger;
 148         unsigned int capture_ratio;
 149
 150         /* TODO: this belongs in the device instance */
 151         struct sr_usb_dev_inst *usb;
 152 };
 153
 154 static int hw_dev_close(struct sr_dev_inst *sdi);
 155
 156 static unsigned int get_memory_size(int type)
 157 {
 158         if (type == MEMORY_SIZE_8K)
 159                 return 8 * 1024;
 160         else if (type == MEMORY_SIZE_64K)
 161                 return 64 * 1024;
 162         else if (type == MEMORY_SIZE_128K)
 163                 return 128 * 1024;
 164         else if (type == MEMORY_SIZE_512K)
 165                 return 512 * 1024;
 166         else
 167                 return 0;
 168 }
 169
 170 #if 0
 171 static int configure_probes(const struct sr_dev_inst *sdi)
 172 {
 173         struct dev_context *devc;
 174         const struct sr_probe *probe;
 175         const GSList *l;
 176         int probe_bit, stage, i;
 177         char *tc;
 178
 179         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 180         devc = sdi->priv;
 181
 182         devc->probe_mask = 0;
 183         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 184                 devc->trigger_mask[i] = 0;
 185                 devc->trigger_value[i] = 0;
 186         }
 187
 188         stage = -1;
 189         for (l = sdi->probes; l; l = l->next) {
 190                 probe = (struct sr_probe *)l->data;
 191                 if (probe->enabled == FALSE)
 192                         continue;
 193                 probe_bit = 1 << (probe->index);
 194                 devc->probe_mask |= probe_bit;
 195
 196                 if (probe->trigger) {
 197                         stage = 0;
 198                         for (tc = probe->trigger; *tc; tc++) {
 199                                 devc->trigger_mask[stage] |= probe_bit;
 200                                 if (*tc == '1')
 201                                         devc->trigger_value[stage] |= probe_bit;
 202                                 stage++;
 203                                 if (stage > NUM_TRIGGER_STAGES)
 204                                         return SR_ERR;
 205                         }
 206                 }
 207         }
 208
 209         return SR_OK;
 210 }
 211 #endif
 212
 213 static int configure_probes(const struct sr_dev_inst *sdi)
 214 {
 215         struct dev_context *devc;
 216         const GSList *l;
 217         const struct sr_probe *probe;
 218         char *tc;
 219         int type;
 220
 221         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 222         devc = sdi->priv;
 223
 224         for (l = sdi->probes; l; l = l->next) {
 225                 probe = (struct sr_probe *)l->data;
 226                 if (probe->enabled == FALSE)
 227                         continue;
 228
 229                 if ((tc = probe->trigger)) {
 230                         switch (*tc) {
 231                         case '1':
 232                                 type = TRIGGER_HIGH;
 233                                 break;
 234                         case '0':
 235                                 type = TRIGGER_LOW;
 236                                 break;
 237 #if 0
 238                         case 'r':
 239                                 type = TRIGGER_POSEDGE;
 240                                 break;
 241                         case 'f':
 242                                 type = TRIGGER_NEGEDGE;
 243                                 break;
 244                         case 'c':
 245                                 type = TRIGGER_ANYEDGE;
 246                                 break;
 247 #endif
 248                         default:
 249                                 return SR_ERR;
 250                         }
 251                         analyzer_add_trigger(probe->index, type);
 252                         devc->trigger = 1;
 253                 }
 254         }
 255
 256         return SR_OK;
 257 }
 258
 259 static int clear_instances(void)
 260 {
 261         GSList *l;
 262         struct sr_dev_inst *sdi;
 263         struct drv_context *drvc;
 264         struct dev_context *devc;
 265
 266         drvc = di->priv;
 267         for (l = drvc->instances; l; l = l->next) {
 268                 sdi = l->data;
 269                 if (!(devc = sdi->priv)) {
 270                         /* Log error, but continue cleaning up the rest. */
 271                         sr_err("zeroplus: %s: sdi->priv was NULL, continuing", __func__);
 272                         continue;
 273                 }
 274                 sr_usb_dev_inst_free(devc->usb);
 275                 /* Properly close all devices... */
 276                 hw_dev_close(sdi);
 277                 /* ...and free all their memory. */
 278                 sr_dev_inst_free(sdi);
 279         }
 280         g_slist_free(drvc->instances);
 281         drvc->instances = NULL;
 282
 283         return SR_OK;
 284 }
 285
 286 /*
 287  * API callbacks
 288  */
 289
 290 static int hw_init(struct sr_context *sr_ctx)
 291 {
 292         struct drv_context *drvc;
 293
 294         if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
 295                 sr_err("Driver context malloc failed.");
 296                 return SR_ERR_MALLOC;
 297         }
 298
 299         drvc->sr_ctx = sr_ctx;
 300         di->priv = drvc;
 301
 302         return SR_OK;
 303 }
 304
 305 static GSList *hw_scan(GSList *options)
 306 {
 307         struct sr_dev_inst *sdi;
 308         struct sr_probe *probe;
 309         struct drv_context *drvc;
 310         struct dev_context *devc;
 311         model_t *prof;
 312         struct libusb_device_descriptor des;
 313         libusb_device **devlist;
 314         GSList *devices;
 315         int ret, devcnt, i, j;
 316
 317         (void)options;
 318
 319         drvc = di->priv;
 320         devices = NULL;
 321
 322         clear_instances();
 323
 324         /* Find all ZEROPLUS analyzers and add them to device list. */
 325         devcnt = 0;
 326         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 327
 328         for (i = 0; devlist[i]; i++) {
 329                 ret = libusb_get_device_descriptor(devlist[i], &des);
 330                 if (ret != 0) {
 331                         sr_err("zp: failed to get device descriptor: %s",
 332                                libusb_error_name(ret));
 333                         continue;
 334                 }
 335
 336                 prof = NULL;
 337                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 338                         if (des.idVendor == zeroplus_models[j].vid &&
 339                                 des.idProduct == zeroplus_models[j].pid) {
 340                                 prof = &zeroplus_models[j];
 341                         }
 342                 }
 343                 /* Skip if the device was not found */
 344                 if (!prof)
 345                         continue;
 346                 sr_info("zp: Found ZEROPLUS model %s", prof->model_name);
 347
 348                 /* Register the device with libsigrok. */
 349                 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
 350                                 VENDOR_NAME, prof->model_name, NULL))) {
 351                         sr_err("zp: %s: sr_dev_inst_new failed", __func__);
 352                         return NULL;
 353                 }
 354                 sdi->driver = di;
 355
 356                 /* Allocate memory for our private driver context. */
 357                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 358                         sr_err("zp: %s: devc malloc failed", __func__);
 359                         return NULL;
 360                 }
 361                 sdi->priv = devc;
 362                 devc->num_channels = prof->channels;
 363 #ifdef ZP_EXPERIMENTAL
 364                 devc->max_memory_size = 128 * 1024;
 365                 devc->max_samplerate = 200;
 366 #else
 367                 devc->max_memory_size = prof->sample_depth * 1024;
 368                 devc->max_samplerate = prof->max_sampling_freq;
 369 #endif
 370                 devc->max_samplerate *= SR_MHZ(1);
 371                 devc->memory_size = MEMORY_SIZE_8K;
 372                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 373
 374                 /* Fill in probelist according to this device's profile. */
 375                 for (j = 0; j < devc->num_channels; j++) {
 376                         if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
 377                                         probe_names[j])))
 378                                 return NULL;
 379                         sdi->probes = g_slist_append(sdi->probes, probe);
 380                 }
 381
 382                 devices = g_slist_append(devices, sdi);
 383                 drvc->instances = g_slist_append(drvc->instances, sdi);
 384                 devc->usb = sr_usb_dev_inst_new(
 385                         libusb_get_bus_number(devlist[i]),
 386                         libusb_get_device_address(devlist[i]), NULL);
 387                 devcnt++;
 388
 389         }
 390         libusb_free_device_list(devlist, 1);
 391
 392         return devices;
 393 }
 394
 395 static GSList *hw_dev_list(void)
 396 {
 397         struct drv_context *drvc;
 398
 399         drvc = di->priv;
 400
 401         return drvc->instances;
 402 }
 403
 404 static int hw_dev_open(struct sr_dev_inst *sdi)
 405 {
 406         struct dev_context *devc;
 407         struct drv_context *drvc = di->priv;
 408         libusb_device **devlist, *dev;
 409         struct libusb_device_descriptor des;
 410         int device_count, ret, i;
 411
 412         if (!(devc = sdi->priv)) {
 413                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 414                 return SR_ERR_ARG;
 415         }
 416
 417         device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
 418                                               &devlist);
 419         if (device_count < 0) {
 420                 sr_err("zp: Failed to retrieve device list");
 421                 return SR_ERR;
 422         }
 423
 424         dev = NULL;
 425         for (i = 0; i < device_count; i++) {
 426                 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
 427                         sr_err("zp: Failed to get device descriptor: %s.",
 428                                libusb_error_name(ret));
 429                         continue;
 430                 }
 431                 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
 432                     && libusb_get_device_address(devlist[i]) == devc->usb->address) {
 433                         dev = devlist[i];
 434                         break;
 435                 }
 436         }
 437         if (!dev) {
 438                 sr_err("device on bus %d address %d disappeared!",
 439                                 devc->usb->bus, devc->usb->address);
 440                 return SR_ERR;
 441         }
 442
 443         if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
 444                 sdi->status = SR_ST_ACTIVE;
 445                 sr_info("zp: opened device %d on %d.%d interface %d",
 446                         sdi->index, devc->usb->bus,
 447                         devc->usb->address, USB_INTERFACE);
 448         } else {
 449                 sr_err("zp: failed to open device: %s", libusb_error_name(ret));
 450                 return SR_ERR;
 451         }
 452
 453         ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
 454         if (ret < 0) {
 455                 sr_err("zp: Unable to set USB configuration %d: %s",
 456                        USB_CONFIGURATION, libusb_error_name(ret));
 457                 return SR_ERR;
 458         }
 459
 460         ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
 461         if (ret != 0) {
 462                 sr_err("zp: Unable to claim interface: %s",
 463                        libusb_error_name(ret));
 464                 return SR_ERR;
 465         }
 466
 467         /* Set default configuration after power on */
 468         if (analyzer_read_status(devc->usb->devhdl) == 0)
 469                 analyzer_configure(devc->usb->devhdl);
 470
 471         analyzer_reset(devc->usb->devhdl);
 472         analyzer_initialize(devc->usb->devhdl);
 473
 474         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 475         // analyzer_set_freq(g_freq, g_freq_scale);
 476         analyzer_set_trigger_count(1);
 477         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 478         // * get_memory_size(g_memory_size)) / 100) >> 2);
 479
 480 #if 0
 481         if (g_double_mode == 1)
 482                 analyzer_set_compression(COMPRESSION_DOUBLE);
 483         else if (g_compression == 1)
 484                 analyzer_set_compression(COMPRESSION_ENABLE);
 485         else
 486 #endif
 487         analyzer_set_compression(COMPRESSION_NONE);
 488
 489         if (devc->cur_samplerate == 0) {
 490                 /* Samplerate hasn't been set. Default to 1MHz. */
 491                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 492                 devc->cur_samplerate = SR_MHZ(1);
 493         }
 494
 495         return SR_OK;
 496 }
 497
 498 static int hw_dev_close(struct sr_dev_inst *sdi)
 499 {
 500         struct dev_context *devc;
 501
 502         if (!(devc = sdi->priv)) {
 503                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 504                 return SR_ERR;
 505         }
 506
 507         if (!devc->usb->devhdl)
 508                 return SR_ERR;
 509
 510         sr_info("zp: closing device %d on %d.%d interface %d", sdi->index,
 511                 devc->usb->bus, devc->usb->address, USB_INTERFACE);
 512         libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
 513         libusb_reset_device(devc->usb->devhdl);
 514         libusb_close(devc->usb->devhdl);
 515         devc->usb->devhdl = NULL;
 516         sdi->status = SR_ST_INACTIVE;
 517
 518         return SR_OK;
 519 }
 520
 521 static int hw_cleanup(void)
 522 {
 523         struct drv_context *drvc;
 524
 525         if (!(drvc = di->priv))
 526                 return SR_OK;
 527
 528         clear_instances();
 529
 530         return SR_OK;
 531 }
 532
 533 static int config_get(int id, const void **data, const struct sr_dev_inst *sdi)
 534 {
 535         struct dev_context *devc;
 536
 537         switch (id) {
 538         case SR_CONF_SAMPLERATE:
 539                 if (sdi) {
 540                         devc = sdi->priv;
 541                         *data = &devc->cur_samplerate;
 542                         sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
 543                                 __func__, devc->cur_samplerate);
 544                 } else
 545                         return SR_ERR;
 546                 break;
 547         default:
 548                 return SR_ERR_ARG;
 549         }
 550
 551         return SR_OK;
 552 }
 553
 554 static int set_samplerate(struct dev_context *devc, uint64_t samplerate)
 555 {
 556         int i;
 557
 558         for (i = 0; supported_samplerates[i]; i++)
 559                 if (samplerate == supported_samplerates[i])
 560                         break;
 561         if (!supported_samplerates[i] || samplerate > devc->max_samplerate) {
 562                 sr_err("zp: %s: unsupported samplerate", __func__);
 563                 return SR_ERR_ARG;
 564         }
 565
 566         sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
 567
 568         if (samplerate >= SR_MHZ(1))
 569                 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 570         else if (samplerate >= SR_KHZ(1))
 571                 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
 572         else
 573                 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
 574
 575         devc->cur_samplerate = samplerate;
 576
 577         return SR_OK;
 578 }
 579
 580 static int set_limit_samples(struct dev_context *devc, uint64_t samples)
 581 {
 582         devc->limit_samples = samples;
 583
 584         if (samples <= 2 * 1024)
 585                 devc->memory_size = MEMORY_SIZE_8K;
 586         else if (samples <= 16 * 1024)
 587                 devc->memory_size = MEMORY_SIZE_64K;
 588         else if (samples <= 32 * 1024 ||
 589                  devc->max_memory_size <= 32 * 1024)
 590                 devc->memory_size = MEMORY_SIZE_128K;
 591         else
 592                 devc->memory_size = MEMORY_SIZE_512K;
 593
 594         sr_info("zp: Setting memory size to %dK.",
 595                 get_memory_size(devc->memory_size) / 1024);
 596
 597         analyzer_set_memory_size(devc->memory_size);
 598
 599         return SR_OK;
 600 }
 601
 602 static int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
 603 {
 604         if (ratio > 100) {
 605                 sr_err("zp: %s: invalid capture ratio", __func__);
 606                 return SR_ERR_ARG;
 607         }
 608
 609         devc->capture_ratio = ratio;
 610
 611         sr_info("zp: Setting capture ratio to %d%%.", devc->capture_ratio);
 612
 613         return SR_OK;
 614 }
 615
 616 static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
 617 {
 618         struct dev_context *devc;
 619
 620         if (!sdi) {
 621                 sr_err("zp: %s: sdi was NULL", __func__);
 622                 return SR_ERR_ARG;
 623         }
 624
 625         if (!(devc = sdi->priv)) {
 626                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 627                 return SR_ERR_ARG;
 628         }
 629
 630         switch (id) {
 631         case SR_CONF_SAMPLERATE:
 632                 return set_samplerate(devc, *(const uint64_t *)value);
 633         case SR_CONF_LIMIT_SAMPLES:
 634                 return set_limit_samples(devc, *(const uint64_t *)value);
 635         case SR_CONF_CAPTURE_RATIO:
 636                 return set_capture_ratio(devc, *(const uint64_t *)value);
 637         default:
 638                 return SR_ERR;
 639         }
 640 }
 641
 642 static int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
 643 {
 644
 645         (void)sdi;
 646
 647         switch (key) {
 648         case SR_CONF_DEVICE_OPTIONS:
 649                 *data = hwcaps;
 650                 break;
 651         case SR_CONF_SAMPLERATE:
 652                 *data = &samplerates;
 653                 break;
 654         case SR_CONF_TRIGGER_TYPE:
 655                 *data = TRIGGER_TYPE;
 656                 break;
 657         default:
 658                 return SR_ERR_ARG;
 659         }
 660
 661         return SR_OK;
 662 }
 663
 664 static void set_triggerbar(struct dev_context *devc)
 665 {
 666         unsigned int ramsize;
 667         unsigned int n;
 668         unsigned int triggerbar;
 669
 670         ramsize = get_memory_size(devc->memory_size) / 4;
 671         if (devc->trigger) {
 672                 n = ramsize;
 673                 if (devc->max_memory_size < n)
 674                         n = devc->max_memory_size;
 675                 if (devc->limit_samples < n)
 676                         n = devc->limit_samples;
 677                 n = n * devc->capture_ratio / 100;
 678                 if (n > ramsize - 8)
 679                         triggerbar = ramsize - 8;
 680                 else
 681                         triggerbar = n;
 682         } else {
 683                 triggerbar = 0;
 684         }
 685         analyzer_set_triggerbar_address(triggerbar);
 686         analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
 687
 688         sr_dbg("zp: triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
 689         sr_dbg("zp: ramsize_triggerbar_address = %d(0x%x)",
 690                ramsize - triggerbar, ramsize - triggerbar);
 691 }
 692
 693 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 694                 void *cb_data)
 695 {
 696         struct sr_datafeed_packet packet;
 697         struct sr_datafeed_logic logic;
 698         struct sr_datafeed_header header;
 699         //uint64_t samples_read;
 700         int res;
 701         unsigned int packet_num;
 702         unsigned int n;
 703         unsigned char *buf;
 704         struct dev_context *devc;
 705
 706         if (!(devc = sdi->priv)) {
 707                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 708                 return SR_ERR_ARG;
 709         }
 710
 711         if (configure_probes(sdi) != SR_OK) {
 712                 sr_err("zp: failed to configured probes");
 713                 return SR_ERR;
 714         }
 715
 716         set_triggerbar(devc);
 717
 718         /* push configured settings to device */
 719         analyzer_configure(devc->usb->devhdl);
 720
 721         analyzer_start(devc->usb->devhdl);
 722         sr_info("zp: Waiting for data");
 723         analyzer_wait_data(devc->usb->devhdl);
 724
 725         sr_info("zp: Stop address    = 0x%x",
 726                 analyzer_get_stop_address(devc->usb->devhdl));
 727         sr_info("zp: Now address     = 0x%x",
 728                 analyzer_get_now_address(devc->usb->devhdl));
 729         sr_info("zp: Trigger address = 0x%x",
 730                 analyzer_get_trigger_address(devc->usb->devhdl));
 731
 732         packet.type = SR_DF_HEADER;
 733         packet.payload = &header;
 734         header.feed_version = 1;
 735         gettimeofday(&header.starttime, NULL);
 736         sr_session_send(cb_data, &packet);
 737
 738         if (!(buf = g_try_malloc(PACKET_SIZE))) {
 739                 sr_err("zp: %s: buf malloc failed", __func__);
 740                 return SR_ERR_MALLOC;
 741         }
 742
 743         //samples_read = 0;
 744         analyzer_read_start(devc->usb->devhdl);
 745         /* Send the incoming transfer to the session bus. */
 746         n = get_memory_size(devc->memory_size);
 747         if (devc->max_memory_size * 4 < n)
 748                 n = devc->max_memory_size * 4;
 749         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 750                 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
 751                 sr_info("zp: Tried to read %d bytes, actually read %d bytes",
 752                         PACKET_SIZE, res);
 753
 754                 packet.type = SR_DF_LOGIC;
 755                 packet.payload = &logic;
 756                 logic.length = PACKET_SIZE;
 757                 logic.unitsize = 4;
 758                 logic.data = buf;
 759                 sr_session_send(cb_data, &packet);
 760                 //samples_read += res / 4;
 761         }
 762         analyzer_read_stop(devc->usb->devhdl);
 763         g_free(buf);
 764
 765         packet.type = SR_DF_END;
 766         sr_session_send(cb_data, &packet);
 767
 768         return SR_OK;
 769 }
 770
 771 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
 772 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 773 {
 774         struct sr_datafeed_packet packet;
 775         struct dev_context *devc;
 776
 777         packet.type = SR_DF_END;
 778         sr_session_send(cb_data, &packet);
 779
 780         if (!(devc = sdi->priv)) {
 781                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 782                 return SR_ERR_BUG;
 783         }
 784
 785         analyzer_reset(devc->usb->devhdl);
 786         /* TODO: Need to cancel and free any queued up transfers. */
 787
 788         return SR_OK;
 789 }
 790
 791 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 792         .name = "zeroplus-logic-cube",
 793         .longname = "ZEROPLUS Logic Cube LAP-C series",
 794         .api_version = 1,
 795         .init = hw_init,
 796         .cleanup = hw_cleanup,
 797         .scan = hw_scan,
 798         .dev_list = hw_dev_list,
 799         .dev_clear = hw_cleanup,
 800         .config_get = config_get,
 801         .config_set = config_set,
 802         .config_list = config_list,
 803         .dev_open = hw_dev_open,
 804         .dev_close = hw_dev_close,
 805         .dev_acquisition_start = hw_dev_acquisition_start,
 806         .dev_acquisition_stop = hw_dev_acquisition_stop,
 807         .priv = NULL,
 808 };