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_TYPES                   "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_HWCAP_LOGIC_ANALYZER,
  75         SR_HWCAP_SAMPLERATE,
  76         SR_HWCAP_CAPTURE_RATIO,
  77
  78         /* These are really implemented in the driver, not the hardware. */
  79         SR_HWCAP_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",
  89         "A1",
  90         "A2",
  91         "A3",
  92         "A4",
  93         "A5",
  94         "A6",
  95         "A7",
  96         "B0",
  97         "B1",
  98         "B2",
  99         "B3",
 100         "B4",
 101         "B5",
 102         "B6",
 103         "B7",
 104         NULL,
 105 };
 106
 107 /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
 108 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
 109 static struct sr_dev_driver *zdi = &zeroplus_logic_cube_driver_info;
 110
 111 /*
 112  * The hardware supports more samplerates than these, but these are the
 113  * options hardcoded into the vendor's Windows GUI.
 114  */
 115
 116 /*
 117  * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
 118  * that high.
 119  */
 120 static const uint64_t supported_samplerates[] = {
 121         SR_HZ(100),
 122         SR_HZ(500),
 123         SR_KHZ(1),
 124         SR_KHZ(5),
 125         SR_KHZ(25),
 126         SR_KHZ(50),
 127         SR_KHZ(100),
 128         SR_KHZ(200),
 129         SR_KHZ(400),
 130         SR_KHZ(800),
 131         SR_MHZ(1),
 132         SR_MHZ(10),
 133         SR_MHZ(25),
 134         SR_MHZ(50),
 135         SR_MHZ(80),
 136         SR_MHZ(100),
 137         SR_MHZ(150),
 138         SR_MHZ(200),
 139         0,
 140 };
 141
 142 static const struct sr_samplerates samplerates = {
 143         0,
 144         0,
 145         0,
 146         supported_samplerates,
 147 };
 148
 149 /* Private, per-device-instance driver context. */
 150 struct dev_context {
 151         uint64_t cur_samplerate;
 152         uint64_t max_samplerate;
 153         uint64_t limit_samples;
 154         int num_channels; /* TODO: This isn't initialized before it's needed :( */
 155         int memory_size;
 156         unsigned int max_memory_size;
 157         //uint8_t probe_mask;
 158         //uint8_t trigger_mask[NUM_TRIGGER_STAGES];
 159         //uint8_t trigger_value[NUM_TRIGGER_STAGES];
 160         // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
 161         int trigger;
 162         unsigned int capture_ratio;
 163
 164         /* TODO: this belongs in the device instance */
 165         struct sr_usb_dev_inst *usb;
 166 };
 167
 168 static int hw_dev_close(struct sr_dev_inst *sdi);
 169
 170 static unsigned int get_memory_size(int type)
 171 {
 172         if (type == MEMORY_SIZE_8K)
 173                 return 8 * 1024;
 174         else if (type == MEMORY_SIZE_64K)
 175                 return 64 * 1024;
 176         else if (type == MEMORY_SIZE_128K)
 177                 return 128 * 1024;
 178         else if (type == MEMORY_SIZE_512K)
 179                 return 512 * 1024;
 180         else
 181                 return 0;
 182 }
 183
 184 #if 0
 185 static int configure_probes(const struct sr_dev_inst *sdi)
 186 {
 187         struct dev_context *devc;
 188         const struct sr_probe *probe;
 189         const GSList *l;
 190         int probe_bit, stage, i;
 191         char *tc;
 192
 193         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 194         devc = sdi->priv;
 195
 196         devc->probe_mask = 0;
 197         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 198                 devc->trigger_mask[i] = 0;
 199                 devc->trigger_value[i] = 0;
 200         }
 201
 202         stage = -1;
 203         for (l = sdi->probes; l; l = l->next) {
 204                 probe = (struct sr_probe *)l->data;
 205                 if (probe->enabled == FALSE)
 206                         continue;
 207                 probe_bit = 1 << (probe->index);
 208                 devc->probe_mask |= probe_bit;
 209
 210                 if (probe->trigger) {
 211                         stage = 0;
 212                         for (tc = probe->trigger; *tc; tc++) {
 213                                 devc->trigger_mask[stage] |= probe_bit;
 214                                 if (*tc == '1')
 215                                         devc->trigger_value[stage] |= probe_bit;
 216                                 stage++;
 217                                 if (stage > NUM_TRIGGER_STAGES)
 218                                         return SR_ERR;
 219                         }
 220                 }
 221         }
 222
 223         return SR_OK;
 224 }
 225 #endif
 226
 227 static int configure_probes(const struct sr_dev_inst *sdi)
 228 {
 229         struct dev_context *devc;
 230         const GSList *l;
 231         const struct sr_probe *probe;
 232         char *tc;
 233         int type;
 234
 235         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 236         devc = sdi->priv;
 237
 238         for (l = sdi->probes; l; l = l->next) {
 239                 probe = (struct sr_probe *)l->data;
 240                 if (probe->enabled == FALSE)
 241                         continue;
 242
 243                 if ((tc = probe->trigger)) {
 244                         switch (*tc) {
 245                         case '1':
 246                                 type = TRIGGER_HIGH;
 247                                 break;
 248                         case '0':
 249                                 type = TRIGGER_LOW;
 250                                 break;
 251 #if 0
 252                         case 'r':
 253                                 type = TRIGGER_POSEDGE;
 254                                 break;
 255                         case 'f':
 256                                 type = TRIGGER_NEGEDGE;
 257                                 break;
 258                         case 'c':
 259                                 type = TRIGGER_ANYEDGE;
 260                                 break;
 261 #endif
 262                         default:
 263                                 return SR_ERR;
 264                         }
 265                         analyzer_add_trigger(probe->index, type);
 266                         devc->trigger = 1;
 267                 }
 268         }
 269
 270         return SR_OK;
 271 }
 272
 273 static int clear_instances(void)
 274 {
 275         GSList *l;
 276         struct sr_dev_inst *sdi;
 277         struct drv_context *drvc;
 278         struct dev_context *devc;
 279
 280         drvc = zdi->priv;
 281         for (l = drvc->instances; l; l = l->next) {
 282                 sdi = l->data;
 283                 if (!(devc = sdi->priv)) {
 284                         /* Log error, but continue cleaning up the rest. */
 285                         sr_err("zeroplus: %s: sdi->priv was NULL, continuing", __func__);
 286                         continue;
 287                 }
 288                 sr_usb_dev_inst_free(devc->usb);
 289                 /* Properly close all devices... */
 290                 hw_dev_close(sdi);
 291                 /* ...and free all their memory. */
 292                 sr_dev_inst_free(sdi);
 293         }
 294         g_slist_free(drvc->instances);
 295         drvc->instances = NULL;
 296
 297         return SR_OK;
 298 }
 299
 300 /*
 301  * API callbacks
 302  */
 303
 304 static int hw_init(struct sr_context *sr_ctx)
 305 {
 306         struct drv_context *drvc;
 307
 308         if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
 309                 sr_err("zeroplus: driver context malloc failed.");
 310                 return SR_ERR_MALLOC;
 311         }
 312         drvc->sr_ctx = sr_ctx;
 313         zdi->priv = drvc;
 314
 315         return SR_OK;
 316 }
 317
 318 static GSList *hw_scan(GSList *options)
 319 {
 320         struct sr_dev_inst *sdi;
 321         struct sr_probe *probe;
 322         struct drv_context *drvc;
 323         struct dev_context *devc;
 324         model_t *prof;
 325         struct libusb_device_descriptor des;
 326         libusb_device **devlist;
 327         GSList *devices;
 328         int ret, devcnt, i, j;
 329
 330         (void)options;
 331
 332         drvc = zdi->priv;
 333         devices = NULL;
 334
 335         clear_instances();
 336
 337         /* Find all ZEROPLUS analyzers and add them to device list. */
 338         devcnt = 0;
 339         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 340
 341         for (i = 0; devlist[i]; i++) {
 342                 ret = libusb_get_device_descriptor(devlist[i], &des);
 343                 if (ret != 0) {
 344                         sr_err("zp: failed to get device descriptor: %d", ret);
 345                         continue;
 346                 }
 347
 348                 prof = NULL;
 349                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 350                         if (des.idVendor == zeroplus_models[j].vid &&
 351                                 des.idProduct == zeroplus_models[j].pid) {
 352                                 prof = &zeroplus_models[j];
 353                         }
 354                 }
 355                 /* Skip if the device was not found */
 356                 if (!prof)
 357                         continue;
 358                 sr_info("zp: Found ZEROPLUS model %s", prof->model_name);
 359
 360                 /* Register the device with libsigrok. */
 361                 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
 362                                 VENDOR_NAME, prof->model_name, NULL))) {
 363                         sr_err("zp: %s: sr_dev_inst_new failed", __func__);
 364                         return NULL;
 365                 }
 366                 sdi->driver = zdi;
 367
 368                 /* Allocate memory for our private driver context. */
 369                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 370                         sr_err("zp: %s: devc malloc failed", __func__);
 371                         return NULL;
 372                 }
 373                 sdi->priv = devc;
 374                 devc->num_channels = prof->channels;
 375 #ifdef ZP_EXPERIMENTAL
 376                 devc->max_memory_size = 128 * 1024;
 377                 devc->max_samplerate = 200;
 378 #else
 379                 devc->max_memory_size = prof->sample_depth * 1024;
 380                 devc->max_samplerate = prof->max_sampling_freq;
 381 #endif
 382                 devc->max_samplerate *= SR_MHZ(1);
 383                 devc->memory_size = MEMORY_SIZE_8K;
 384                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 385
 386                 /* Fill in probelist according to this device's profile. */
 387                 for (j = 0; j < devc->num_channels; j++) {
 388                         if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
 389                                         probe_names[j])))
 390                                 return NULL;
 391                         sdi->probes = g_slist_append(sdi->probes, probe);
 392                 }
 393
 394                 devices = g_slist_append(devices, sdi);
 395                 drvc->instances = g_slist_append(drvc->instances, sdi);
 396                 devc->usb = sr_usb_dev_inst_new(
 397                         libusb_get_bus_number(devlist[i]),
 398                         libusb_get_device_address(devlist[i]), NULL);
 399                 devcnt++;
 400
 401         }
 402         libusb_free_device_list(devlist, 1);
 403
 404         return devices;
 405 }
 406
 407 static GSList *hw_dev_list(void)
 408 {
 409         struct drv_context *drvc;
 410
 411         drvc = zdi->priv;
 412
 413         return drvc->instances;
 414 }
 415
 416 static int hw_dev_open(struct sr_dev_inst *sdi)
 417 {
 418         struct dev_context *devc;
 419         struct drv_context *drvc = zdi->priv;
 420         libusb_device **devlist, *dev;
 421         struct libusb_device_descriptor des;
 422         int device_count, ret, i;
 423
 424         if (!(devc = sdi->priv)) {
 425                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 426                 return SR_ERR_ARG;
 427         }
 428
 429         device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
 430                                               &devlist);
 431         if (device_count < 0) {
 432                 sr_err("zp: Failed to retrieve device list");
 433                 return SR_ERR;
 434         }
 435
 436         dev = NULL;
 437         for (i = 0; i < device_count; i++) {
 438                 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
 439                         sr_err("fx2lafw: Failed to get device descriptor: %d.",
 440                                ret);
 441                         continue;
 442                 }
 443                 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
 444                     && libusb_get_device_address(devlist[i]) == devc->usb->address) {
 445                         dev = devlist[i];
 446                         break;
 447                 }
 448         }
 449         if (!dev) {
 450                 sr_err("device on bus %d address %d disappeared!",
 451                                 devc->usb->bus, devc->usb->address);
 452                 return SR_ERR;
 453         }
 454
 455         if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
 456                 sdi->status = SR_ST_ACTIVE;
 457                 sr_info("zp: opened device %d on %d.%d interface %d",
 458                         sdi->index, devc->usb->bus,
 459                         devc->usb->address, USB_INTERFACE);
 460         } else {
 461                 sr_err("zp: failed to open device: %d", ret);
 462                 return SR_ERR;
 463         }
 464
 465         ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
 466         if (ret < 0) {
 467                 sr_err("zp: Unable to set USB configuration %d: %d",
 468                        USB_CONFIGURATION, ret);
 469                 return SR_ERR;
 470         }
 471
 472         ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
 473         if (ret != 0) {
 474                 sr_err("zp: Unable to claim interface: %d", ret);
 475                 return SR_ERR;
 476         }
 477
 478         /* Set default configuration after power on */
 479         if (analyzer_read_status(devc->usb->devhdl) == 0)
 480                 analyzer_configure(devc->usb->devhdl);
 481
 482         analyzer_reset(devc->usb->devhdl);
 483         analyzer_initialize(devc->usb->devhdl);
 484
 485         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 486         // analyzer_set_freq(g_freq, g_freq_scale);
 487         analyzer_set_trigger_count(1);
 488         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 489         // * get_memory_size(g_memory_size)) / 100) >> 2);
 490
 491 #if 0
 492         if (g_double_mode == 1)
 493                 analyzer_set_compression(COMPRESSION_DOUBLE);
 494         else if (g_compression == 1)
 495                 analyzer_set_compression(COMPRESSION_ENABLE);
 496         else
 497 #endif
 498         analyzer_set_compression(COMPRESSION_NONE);
 499
 500         if (devc->cur_samplerate == 0) {
 501                 /* Samplerate hasn't been set. Default to 1MHz. */
 502                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 503                 devc->cur_samplerate = SR_MHZ(1);
 504         }
 505
 506         return SR_OK;
 507 }
 508
 509 static int hw_dev_close(struct sr_dev_inst *sdi)
 510 {
 511         struct dev_context *devc;
 512
 513         if (!(devc = sdi->priv)) {
 514                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 515                 return SR_ERR;
 516         }
 517
 518         if (!devc->usb->devhdl)
 519                 return SR_ERR;
 520
 521         sr_info("zp: closing device %d on %d.%d interface %d", sdi->index,
 522                 devc->usb->bus, devc->usb->address, USB_INTERFACE);
 523         libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
 524         libusb_reset_device(devc->usb->devhdl);
 525         libusb_close(devc->usb->devhdl);
 526         devc->usb->devhdl = NULL;
 527         sdi->status = SR_ST_INACTIVE;
 528
 529         return SR_OK;
 530 }
 531
 532 static int hw_cleanup(void)
 533 {
 534         struct drv_context *drvc;
 535
 536         if (!(drvc = zdi->priv))
 537                 return SR_OK;
 538
 539         clear_instances();
 540
 541         return SR_OK;
 542 }
 543
 544 static int hw_info_get(int info_id, const void **data,
 545        const struct sr_dev_inst *sdi)
 546 {
 547         struct dev_context *devc;
 548
 549         switch (info_id) {
 550         case SR_DI_HWCAPS:
 551                 *data = hwcaps;
 552                 break;
 553         case SR_DI_NUM_PROBES:
 554                 if (sdi) {
 555                         devc = sdi->priv;
 556                         *data = GINT_TO_POINTER(devc->num_channels);
 557                         sr_spew("zp: %s: Returning number of channels: %d.",
 558                                         __func__, devc->num_channels);
 559                 } else
 560                         return SR_ERR;
 561                 break;
 562         case SR_DI_PROBE_NAMES:
 563                 *data = probe_names;
 564                 sr_spew("zp: %s: Returning probenames.", __func__);
 565                 break;
 566         case SR_DI_SAMPLERATES:
 567                 *data = &samplerates;
 568                 sr_spew("zp: %s: Returning samplerates.", __func__);
 569                 break;
 570         case SR_DI_TRIGGER_TYPES:
 571                 *data = TRIGGER_TYPES;
 572                 sr_spew("zp: %s: Returning triggertypes: %s.", __func__, TRIGGER_TYPES);
 573                 break;
 574         case SR_DI_CUR_SAMPLERATE:
 575                 if (sdi) {
 576                         devc = sdi->priv;
 577                         *data = &devc->cur_samplerate;
 578                         sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
 579                                 __func__, devc->cur_samplerate);
 580                 } else
 581                         return SR_ERR;
 582                 break;
 583         default:
 584                 return SR_ERR_ARG;
 585         }
 586
 587         return SR_OK;
 588 }
 589
 590 static int set_samplerate(struct dev_context *devc, uint64_t samplerate)
 591 {
 592         int i;
 593
 594         for (i = 0; supported_samplerates[i]; i++)
 595                 if (samplerate == supported_samplerates[i])
 596                         break;
 597         if (!supported_samplerates[i] || samplerate > devc->max_samplerate) {
 598                 sr_err("zp: %s: unsupported samplerate", __func__);
 599                 return SR_ERR_ARG;
 600         }
 601
 602         sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
 603
 604         if (samplerate >= SR_MHZ(1))
 605                 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 606         else if (samplerate >= SR_KHZ(1))
 607                 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
 608         else
 609                 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
 610
 611         devc->cur_samplerate = samplerate;
 612
 613         return SR_OK;
 614 }
 615
 616 static int set_limit_samples(struct dev_context *devc, uint64_t samples)
 617 {
 618         devc->limit_samples = samples;
 619
 620         if (samples <= 2 * 1024)
 621                 devc->memory_size = MEMORY_SIZE_8K;
 622         else if (samples <= 16 * 1024)
 623                 devc->memory_size = MEMORY_SIZE_64K;
 624         else if (samples <= 32 * 1024 ||
 625                  devc->max_memory_size <= 32 * 1024)
 626                 devc->memory_size = MEMORY_SIZE_128K;
 627         else
 628                 devc->memory_size = MEMORY_SIZE_512K;
 629
 630         sr_info("zp: Setting memory size to %dK.",
 631                 get_memory_size(devc->memory_size) / 1024);
 632
 633         analyzer_set_memory_size(devc->memory_size);
 634
 635         return SR_OK;
 636 }
 637
 638 static int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
 639 {
 640         if (ratio > 100) {
 641                 sr_err("zp: %s: invalid capture ratio", __func__);
 642                 return SR_ERR_ARG;
 643         }
 644
 645         devc->capture_ratio = ratio;
 646
 647         sr_info("zp: Setting capture ratio to %d%%.", devc->capture_ratio);
 648
 649         return SR_OK;
 650 }
 651
 652 static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
 653                              const void *value)
 654 {
 655         struct dev_context *devc;
 656
 657         if (!sdi) {
 658                 sr_err("zp: %s: sdi was NULL", __func__);
 659                 return SR_ERR_ARG;
 660         }
 661
 662         if (!(devc = sdi->priv)) {
 663                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 664                 return SR_ERR_ARG;
 665         }
 666
 667         switch (hwcap) {
 668         case SR_HWCAP_SAMPLERATE:
 669                 return set_samplerate(devc, *(const uint64_t *)value);
 670         case SR_HWCAP_LIMIT_SAMPLES:
 671                 return set_limit_samples(devc, *(const uint64_t *)value);
 672         case SR_HWCAP_CAPTURE_RATIO:
 673                 return set_capture_ratio(devc, *(const uint64_t *)value);
 674         default:
 675                 return SR_ERR;
 676         }
 677 }
 678
 679 static void set_triggerbar(struct dev_context *devc)
 680 {
 681         unsigned int ramsize;
 682         unsigned int n;
 683         unsigned int triggerbar;
 684
 685         ramsize = get_memory_size(devc->memory_size) / 4;
 686         if (devc->trigger) {
 687                 n = ramsize;
 688                 if (devc->max_memory_size < n)
 689                         n = devc->max_memory_size;
 690                 if (devc->limit_samples < n)
 691                         n = devc->limit_samples;
 692                 n = n * devc->capture_ratio / 100;
 693                 if (n > ramsize - 8)
 694                         triggerbar = ramsize - 8;
 695                 else
 696                         triggerbar = n;
 697         } else {
 698                 triggerbar = 0;
 699         }
 700         analyzer_set_triggerbar_address(triggerbar);
 701         analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
 702
 703         sr_dbg("zp: triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
 704         sr_dbg("zp: ramsize_triggerbar_address = %d(0x%x)",
 705                ramsize - triggerbar, ramsize - triggerbar);
 706 }
 707
 708 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 709                 void *cb_data)
 710 {
 711         struct sr_datafeed_packet packet;
 712         struct sr_datafeed_logic logic;
 713         struct sr_datafeed_header header;
 714         struct sr_datafeed_meta_logic meta;
 715         //uint64_t samples_read;
 716         int res;
 717         unsigned int packet_num;
 718         unsigned int n;
 719         unsigned char *buf;
 720         struct dev_context *devc;
 721
 722         if (!(devc = sdi->priv)) {
 723                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 724                 return SR_ERR_ARG;
 725         }
 726
 727         if (configure_probes(sdi) != SR_OK) {
 728                 sr_err("zp: failed to configured probes");
 729                 return SR_ERR;
 730         }
 731
 732         set_triggerbar(devc);
 733
 734         /* push configured settings to device */
 735         analyzer_configure(devc->usb->devhdl);
 736
 737         analyzer_start(devc->usb->devhdl);
 738         sr_info("zp: Waiting for data");
 739         analyzer_wait_data(devc->usb->devhdl);
 740
 741         sr_info("zp: Stop address    = 0x%x",
 742                 analyzer_get_stop_address(devc->usb->devhdl));
 743         sr_info("zp: Now address     = 0x%x",
 744                 analyzer_get_now_address(devc->usb->devhdl));
 745         sr_info("zp: Trigger address = 0x%x",
 746                 analyzer_get_trigger_address(devc->usb->devhdl));
 747
 748         packet.type = SR_DF_HEADER;
 749         packet.payload = &header;
 750         header.feed_version = 1;
 751         gettimeofday(&header.starttime, NULL);
 752         sr_session_send(cb_data, &packet);
 753
 754         /* Send metadata about the SR_DF_LOGIC packets to come. */
 755         packet.type = SR_DF_META_LOGIC;
 756         packet.payload = &meta;
 757         meta.samplerate = devc->cur_samplerate;
 758         meta.num_probes = devc->num_channels;
 759         sr_session_send(cb_data, &packet);
 760
 761         if (!(buf = g_try_malloc(PACKET_SIZE))) {
 762                 sr_err("zp: %s: buf malloc failed", __func__);
 763                 return SR_ERR_MALLOC;
 764         }
 765
 766         //samples_read = 0;
 767         analyzer_read_start(devc->usb->devhdl);
 768         /* Send the incoming transfer to the session bus. */
 769         n = get_memory_size(devc->memory_size);
 770         if (devc->max_memory_size * 4 < n)
 771                 n = devc->max_memory_size * 4;
 772         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 773                 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
 774                 sr_info("zp: Tried to read %d bytes, actually read %d bytes",
 775                         PACKET_SIZE, res);
 776
 777                 packet.type = SR_DF_LOGIC;
 778                 packet.payload = &logic;
 779                 logic.length = PACKET_SIZE;
 780                 logic.unitsize = 4;
 781                 logic.data = buf;
 782                 sr_session_send(cb_data, &packet);
 783                 //samples_read += res / 4;
 784         }
 785         analyzer_read_stop(devc->usb->devhdl);
 786         g_free(buf);
 787
 788         packet.type = SR_DF_END;
 789         sr_session_send(cb_data, &packet);
 790
 791         return SR_OK;
 792 }
 793
 794 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
 795 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 796 {
 797         struct sr_datafeed_packet packet;
 798         struct dev_context *devc;
 799
 800         packet.type = SR_DF_END;
 801         sr_session_send(cb_data, &packet);
 802
 803         if (!(devc = sdi->priv)) {
 804                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 805                 return SR_ERR_BUG;
 806         }
 807
 808         analyzer_reset(devc->usb->devhdl);
 809         /* TODO: Need to cancel and free any queued up transfers. */
 810
 811         return SR_OK;
 812 }
 813
 814 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 815         .name = "zeroplus-logic-cube",
 816         .longname = "ZEROPLUS Logic Cube LAP-C series",
 817         .api_version = 1,
 818         .init = hw_init,
 819         .cleanup = hw_cleanup,
 820         .scan = hw_scan,
 821         .dev_list = hw_dev_list,
 822         .dev_clear = hw_cleanup,
 823         .dev_open = hw_dev_open,
 824         .dev_close = hw_dev_close,
 825         .info_get = hw_info_get,
 826         .dev_config_set = hw_dev_config_set,
 827         .dev_acquisition_start = hw_dev_acquisition_start,
 828         .dev_acquisition_stop = hw_dev_acquisition_stop,
 829         .priv = NULL,
 830 };