hardware/openbench-logic-sniffer/ols.c

   1 /*
   2  * This file is part of the sigrok project.
   3  *
   4  * Copyright (C) 2010 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 <stdint.h>
  22 #include <stdlib.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <fcntl.h>
  26 #include <unistd.h>
  27 #ifndef _WIN32
  28 #include <termios.h>
  29 #endif
  30 #include <string.h>
  31 #include <sys/time.h>
  32 #include <inttypes.h>
  33 #ifdef _WIN32
  34 /* TODO */
  35 #else
  36 #include <arpa/inet.h>
  37 #endif
  38 #include <glib.h>
  39 #include <sigrok.h>
  40
  41 #define NUM_PROBES                      32
  42 #define NUM_TRIGGER_STAGES              4
  43 #define TRIGGER_TYPES                   "01"
  44 #define SERIAL_SPEED                    B115200
  45 /* TODO: SERIAL_ bits, parity, stop bit */
  46 #define CLOCK_RATE                      100000000
  47
  48 /* Command opcodes */
  49 #define CMD_RESET                       0x00
  50 #define CMD_ID                          0x02
  51 #define CMD_SET_FLAGS                   0x82
  52 #define CMD_SET_DIVIDER                 0x80
  53 #define CMD_RUN                         0x01
  54 #define CMD_CAPTURE_SIZE                0x81
  55 #define CMD_SET_TRIGGER_MASK_0          0xc0
  56 #define CMD_SET_TRIGGER_MASK_1          0xc4
  57 #define CMD_SET_TRIGGER_MASK_2          0xc8
  58 #define CMD_SET_TRIGGER_MASK_3          0xcc
  59 #define CMD_SET_TRIGGER_VALUE_0         0xc1
  60 #define CMD_SET_TRIGGER_VALUE_1         0xc5
  61 #define CMD_SET_TRIGGER_VALUE_2         0xc9
  62 #define CMD_SET_TRIGGER_VALUE_3         0xcd
  63 #define CMD_SET_TRIGGER_CONFIG_0        0xc2
  64 #define CMD_SET_TRIGGER_CONFIG_1        0xc6
  65 #define CMD_SET_TRIGGER_CONFIG_2        0xca
  66 #define CMD_SET_TRIGGER_CONFIG_3        0xce
  67
  68 /* Bitmasks for CMD_FLAGS */
  69 #define FLAG_DEMUX                      0x01
  70 #define FLAG_FILTER                     0x02
  71 #define FLAG_CHANNELGROUP_1             0x04
  72 #define FLAG_CHANNELGROUP_2             0x08
  73 #define FLAG_CHANNELGROUP_3             0x10
  74 #define FLAG_CHANNELGROUP_4             0x20
  75 #define FLAG_CLOCK_EXTERNAL             0x40
  76 #define FLAG_CLOCK_INVERTED             0x80
  77 #define FLAG_RLE                        0x0100
  78
  79 static int capabilities[] = {
  80         HWCAP_LOGIC_ANALYZER,
  81         HWCAP_SAMPLERATE,
  82         HWCAP_CAPTURE_RATIO,
  83         HWCAP_LIMIT_SAMPLES,
  84         0,
  85 };
  86
  87 static struct samplerates samplerates = {
  88         10,
  89         MHZ(200),
  90         1,
  91         0,
  92 };
  93
  94 /* List of struct serial_device_instance */
  95 static GSList *device_instances = NULL;
  96
  97 /* Current state of the flag register */
  98 static uint32_t flag_reg = 0;
  99
 100 static uint64_t cur_samplerate = 0;
 101 static uint64_t limit_samples = 0;
 102 /*
 103  * Pre/post trigger capture ratio, in percentage.
 104  * 0 means no pre-trigger data.
 105  */
 106 static int capture_ratio = 0;
 107 static int trigger_at = -1;
 108 static uint32_t probe_mask = 0xffffffff;
 109 static uint32_t trigger_mask[4] = { 0, 0, 0, 0 };
 110 static uint32_t trigger_value[4] = { 0, 0, 0, 0 };
 111 static int num_stages = 0;
 112
 113 static int send_shortcommand(int fd, uint8_t command)
 114 {
 115         char buf[1];
 116
 117         g_debug("ols: sending cmd 0x%.2x", command);
 118         buf[0] = command;
 119         if (write(fd, buf, 1) != 1)
 120                 return SIGROK_ERR;
 121
 122         return SIGROK_OK;
 123 }
 124
 125 static int send_longcommand(int fd, uint8_t command, uint32_t data)
 126 {
 127         char buf[5];
 128
 129         g_debug("ols: sending cmd 0x%.2x data 0x%.8x", command, data);
 130         buf[0] = command;
 131         buf[1] = (data & 0xff000000) >> 24;
 132         buf[2] = (data & 0xff0000) >> 16;
 133         buf[3] = (data & 0xff00) >> 8;
 134         buf[4] = data & 0xff;
 135         if (write(fd, buf, 5) != 5)
 136                 return SIGROK_ERR;
 137
 138         return SIGROK_OK;
 139 }
 140
 141 static int configure_probes(GSList *probes)
 142 {
 143         struct probe *probe;
 144         GSList *l;
 145         int probe_bit, stage, i;
 146         char *tc;
 147
 148         probe_mask = 0;
 149         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 150                 trigger_mask[i] = 0;
 151                 trigger_value[i] = 0;
 152         }
 153
 154         num_stages = 0;
 155         for (l = probes; l; l = l->next) {
 156                 probe = (struct probe *)l->data;
 157                 if (!probe->enabled)
 158                         continue;
 159
 160                 /*
 161                  * Set up the probe mask for later configuration into the
 162                  * flag register.
 163                  */
 164                 probe_bit = 1 << (probe->index - 1);
 165                 probe_mask |= probe_bit;
 166
 167                 if (!probe->trigger)
 168                         continue;
 169
 170                 /* Configure trigger mask and value. */
 171                 stage = 0;
 172                 for (tc = probe->trigger; tc && *tc; tc++) {
 173                         trigger_mask[stage] |= probe_bit;
 174                         if (*tc == '1')
 175                                 trigger_value[stage] |= probe_bit;
 176                         stage++;
 177                         if (stage > 3)
 178                                 /*
 179                                  * TODO: Only supporting parallel mode, with
 180                                  * up to 4 stages.
 181                                  */
 182                                 return SIGROK_ERR;
 183                 }
 184                 if (stage > num_stages)
 185                         num_stages = stage;
 186         }
 187
 188         return SIGROK_OK;
 189 }
 190
 191 static uint32_t reverse16(uint32_t in)
 192 {
 193         uint32_t out;
 194
 195         out = (in & 0xff) << 8;
 196         out |= (in & 0xff00) >> 8;
 197         out |= (in & 0xff0000) << 8;
 198         out |= (in & 0xff000000) >> 8;
 199
 200         return out;
 201 }
 202
 203 static uint32_t reverse32(uint32_t in)
 204 {
 205         uint32_t out;
 206
 207         out = (in & 0xff) << 24;
 208         out |= (in & 0xff00) << 8;
 209         out |= (in & 0xff0000) >> 8;
 210         out |= (in & 0xff000000) >> 24;
 211
 212         return out;
 213 }
 214
 215 static int hw_init(char *deviceinfo)
 216 {
 217         struct sigrok_device_instance *sdi;
 218         GSList *ports, *l;
 219         GPollFD *fds;
 220         int devcnt, final_devcnt, num_ports, fd, ret, i;
 221         char buf[8], **device_names, **serial_params;
 222
 223         if (deviceinfo)
 224                 ports = g_slist_append(NULL, strdup(deviceinfo));
 225         else
 226                 /* No specific device given, so scan all serial ports. */
 227                 ports = list_serial_ports();
 228
 229         num_ports = g_slist_length(ports);
 230         fds = calloc(1, num_ports * sizeof(GPollFD));
 231         device_names = malloc(num_ports * sizeof(char *));
 232         serial_params = malloc(num_ports * sizeof(char *));
 233         devcnt = 0;
 234         for (l = ports; l; l = l->next) {
 235                 /* The discovery procedure is like this: first send the Reset
 236                  * command (0x00) 5 times, since the device could be anywhere
 237                  * in a 5-byte command. Then send the ID command (0x02).
 238                  * If the device responds with 4 bytes ("OLS1" or "SLA1"), we
 239                  * have a match.
 240                  *
 241                  * Since it may take the device a while to respond at 115Kb/s,
 242                  * we do all the sending first, then wait for all of them to
 243                  * respond with g_poll().
 244                  */
 245                 g_message("probing %s...", (char *)l->data);
 246 #ifdef _WIN32
 247                 // FIXME
 248                 // hdl = serial_open(l->data, 0);
 249 #else
 250                 fd = serial_open(l->data, O_RDWR | O_NONBLOCK);
 251 #endif
 252                 if (fd != -1) {
 253                         serial_params[devcnt] = serial_backup_params(fd);
 254                         serial_set_params(fd, 115200, 8, 0, 1, 2);
 255                         ret = SIGROK_OK;
 256                         for (i = 0; i < 5; i++) {
 257                                 if ((ret = send_shortcommand(fd,
 258                                         CMD_RESET)) != SIGROK_OK) {
 259                                         /* Serial port is not writable. */
 260                                         break;
 261                                 }
 262                         }
 263                         if (ret != SIGROK_OK) {
 264                                 serial_restore_params(fd,
 265                                         serial_params[devcnt]);
 266                                 serial_close(fd);
 267                                 continue;
 268                         }
 269                         send_shortcommand(fd, CMD_ID);
 270                         fds[devcnt].fd = fd;
 271                         fds[devcnt].events = G_IO_IN;
 272                         device_names[devcnt] = strdup(l->data);
 273                         devcnt++;
 274                 }
 275                 free(l->data);
 276         }
 277
 278         /* 2ms isn't enough for reliable transfer with pl2303, let's try 10 */
 279         usleep(10000);
 280
 281         final_devcnt = 0;
 282         g_poll(fds, devcnt, 1);
 283         for (i = 0; i < devcnt; i++) {
 284                 if (fds[i].revents == G_IO_IN) {
 285                         if (read(fds[i].fd, buf, 4) == 4) {
 286                                 if (!strncmp(buf, "1SLO", 4)
 287                                     || !strncmp(buf, "1ALS", 4)) {
 288                                         if (!strncmp(buf, "1SLO", 4))
 289                                                 sdi = sigrok_device_instance_new
 290                                                     (final_devcnt, ST_INACTIVE,
 291                                                      "Openbench",
 292                                                      "Logic Sniffer", "v1.0");
 293                                         else
 294                                                 sdi = sigrok_device_instance_new
 295                                                     (final_devcnt, ST_INACTIVE,
 296                                                      "Sump", "Logic Analyzer",
 297                                                      "v1.0");
 298                                         sdi->serial = serial_device_instance_new
 299                                             (device_names[i], -1);
 300                                         device_instances =
 301                                             g_slist_append(device_instances, sdi);
 302                                         final_devcnt++;
 303                                         serial_close(fds[i].fd);
 304                                         fds[i].fd = 0;
 305                                 }
 306                         }
 307                         free(device_names[i]);
 308                 }
 309
 310                 if (fds[i].fd != 0) {
 311                         serial_restore_params(fds[i].fd, serial_params[i]);
 312                         serial_close(fds[i].fd);
 313                 }
 314                 free(serial_params[i]);
 315         }
 316
 317         free(fds);
 318         free(device_names);
 319         free(serial_params);
 320         g_slist_free(ports);
 321
 322         cur_samplerate = samplerates.low;
 323
 324         return final_devcnt;
 325 }
 326
 327 static int hw_opendev(int device_index)
 328 {
 329         struct sigrok_device_instance *sdi;
 330
 331         if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 332                 return SIGROK_ERR;
 333
 334         sdi->serial->fd = serial_open(sdi->serial->port, O_RDWR);
 335         if (sdi->serial->fd == -1)
 336                 return SIGROK_ERR;
 337
 338         sdi->status = ST_ACTIVE;
 339
 340         return SIGROK_OK;
 341 }
 342
 343 static void hw_closedev(int device_index)
 344 {
 345         struct sigrok_device_instance *sdi;
 346
 347         if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 348                 return;
 349
 350         if (sdi->serial->fd != -1) {
 351                 serial_close(sdi->serial->fd);
 352                 sdi->serial->fd = -1;
 353                 sdi->status = ST_INACTIVE;
 354         }
 355 }
 356
 357 static void hw_cleanup(void)
 358 {
 359         GSList *l;
 360         struct sigrok_device_instance *sdi;
 361
 362         /* Properly close all devices. */
 363         for (l = device_instances; l; l = l->next) {
 364                 sdi = l->data;
 365                 if (sdi->serial->fd != -1)
 366                         serial_close(sdi->serial->fd);
 367                 sigrok_device_instance_free(sdi);
 368         }
 369         g_slist_free(device_instances);
 370         device_instances = NULL;
 371 }
 372
 373 static void *hw_get_device_info(int device_index, int device_info_id)
 374 {
 375         struct sigrok_device_instance *sdi;
 376         void *info;
 377
 378         if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 379                 return NULL;
 380
 381         info = NULL;
 382         switch (device_info_id) {
 383         case DI_INSTANCE:
 384                 info = sdi;
 385                 break;
 386         case DI_NUM_PROBES:
 387                 info = GINT_TO_POINTER(NUM_PROBES);
 388                 break;
 389         case DI_SAMPLERATES:
 390                 info = &samplerates;
 391                 break;
 392         case DI_TRIGGER_TYPES:
 393                 info = (char *)TRIGGER_TYPES;
 394                 break;
 395         case DI_CUR_SAMPLERATE:
 396                 info = &cur_samplerate;
 397                 break;
 398         }
 399
 400         return info;
 401 }
 402
 403 static int hw_get_status(int device_index)
 404 {
 405         struct sigrok_device_instance *sdi;
 406
 407         if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 408                 return ST_NOT_FOUND;
 409
 410         return sdi->status;
 411 }
 412
 413 static int *hw_get_capabilities(void)
 414 {
 415         return capabilities;
 416 }
 417
 418 static int set_configuration_samplerate(struct sigrok_device_instance *sdi,
 419                                         uint64_t samplerate)
 420 {
 421         uint32_t divider;
 422
 423         if (samplerate < samplerates.low || samplerate > samplerates.high)
 424                 return SIGROK_ERR_SAMPLERATE;
 425
 426         if (samplerate > CLOCK_RATE) {
 427                 flag_reg |= FLAG_DEMUX;
 428                 divider = (CLOCK_RATE * 2 / samplerate) - 1;
 429         } else {
 430                 flag_reg &= ~FLAG_DEMUX;
 431                 divider = (CLOCK_RATE / samplerate) - 1;
 432         }
 433
 434         g_message("setting samplerate to %" PRIu64 " Hz (divider %u, demux %s)",
 435                         samplerate, divider, flag_reg & FLAG_DEMUX ? "on" : "off");
 436
 437         if (send_longcommand(sdi->serial->fd, CMD_SET_DIVIDER, reverse32(divider)) != SIGROK_OK)
 438                 return SIGROK_ERR;
 439         cur_samplerate = samplerate;
 440
 441         return SIGROK_OK;
 442 }
 443
 444 static int hw_set_configuration(int device_index, int capability, void *value)
 445 {
 446         struct sigrok_device_instance *sdi;
 447         int ret;
 448         uint64_t *tmp_u64;
 449
 450         if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 451                 return SIGROK_ERR;
 452
 453         if (sdi->status != ST_ACTIVE)
 454                 return SIGROK_ERR;
 455
 456         switch (capability) {
 457         case HWCAP_SAMPLERATE:
 458                 tmp_u64 = value;
 459                 ret = set_configuration_samplerate(sdi, *tmp_u64);
 460                 break;
 461         case HWCAP_PROBECONFIG:
 462                 ret = configure_probes((GSList *) value);
 463                 break;
 464         case HWCAP_LIMIT_SAMPLES:
 465                 tmp_u64 = value;
 466                 limit_samples = *tmp_u64;
 467                 ret = SIGROK_OK;
 468                 break;
 469         case HWCAP_CAPTURE_RATIO:
 470                 tmp_u64 = value;
 471                 capture_ratio = *tmp_u64;
 472                 if (capture_ratio < 0 || capture_ratio > 100) {
 473                         capture_ratio = 0;
 474                         ret = SIGROK_ERR;
 475                 } else
 476                         ret = SIGROK_OK;
 477                 break;
 478         default:
 479                 ret = SIGROK_ERR;
 480         }
 481
 482         return ret;
 483 }
 484
 485 static int receive_data(int fd, int revents, void *user_data)
 486 {
 487         static unsigned int num_transfers = 0;
 488         static int num_bytes = 0;
 489         static char last_sample[4] = { 0xff, 0xff, 0xff, 0xff };
 490         static unsigned char sample[4] = { 0, 0, 0, 0 };
 491         static unsigned char tmp_sample[4];
 492         static unsigned char *raw_sample_buf = NULL;
 493         int count, buflen, num_channels, offset, i, j;
 494         struct datafeed_packet packet;
 495         unsigned char byte, *buffer;
 496
 497         if (num_transfers++ == 0) {
 498                 /*
 499                  * First time round, means the device started sending data,
 500                  * and will not stop until done. If it stops sending for
 501                  * longer than it takes to send a byte, that means it's
 502                  * finished. We'll double that to 30ms to be sure...
 503                  */
 504                 source_remove(fd);
 505                 source_add(fd, G_IO_IN, 30, receive_data, user_data);
 506                 raw_sample_buf = malloc(limit_samples * 4);
 507                 /* fill with 1010... for debugging */
 508                 memset(raw_sample_buf, 0x82, limit_samples * 4);
 509         }
 510
 511         num_channels = 0;
 512         for (i = 0x20; i > 0x02; i /= 2) {
 513                 if ((flag_reg & i) == 0)
 514                         num_channels++;
 515         }
 516
 517         if (revents == G_IO_IN
 518             && num_transfers / num_channels <= limit_samples) {
 519                 if (read(fd, &byte, 1) != 1)
 520                         return FALSE;
 521
 522                 sample[num_bytes++] = byte;
 523                 g_debug("received byte 0x%.2x", byte);
 524                 if (num_bytes == num_channels) {
 525                         g_debug("received sample 0x%.*x", num_bytes * 2, (int) *sample);
 526                         /* Got a full sample. */
 527                         if (flag_reg & FLAG_RLE) {
 528                                 /*
 529                                  * In RLE mode -1 should never come in as a
 530                                  * sample, because bit 31 is the "count" flag.
 531                                  * TODO: Endianness may be wrong here, could be
 532                                  * sample[3].
 533                                  */
 534                                 if (sample[0] & 0x80
 535                                     && !(last_sample[0] & 0x80)) {
 536                                         count = (int)(*sample) & 0x7fffffff;
 537                                         buffer = g_malloc(count);
 538                                         buflen = 0;
 539                                         for (i = 0; i < count; i++) {
 540                                                 memcpy(buffer + buflen, last_sample, 4);
 541                                                 buflen += 4;
 542                                         }
 543                                 } else {
 544                                         /*
 545                                          * Just a single sample, next sample
 546                                          * will probably be a count referring
 547                                          * to this -- but this one is still a
 548                                          * part of the stream.
 549                                          */
 550                                         buffer = sample;
 551                                         buflen = 4;
 552                                 }
 553                         } else {
 554                                 /* No compression. */
 555                                 buffer = sample;
 556                                 buflen = 4;
 557                         }
 558
 559                         if (num_channels < 4) {
 560                                 /*
 561                                  * Some channel groups may have been turned
 562                                  * off, to speed up transfer between the
 563                                  * hardware and the PC. Expand that here before
 564                                  * submitting it over the session bus --
 565                                  * whatever is listening on the bus will be
 566                                  * expecting a full 32-bit sample, based on
 567                                  * the number of probes.
 568                                  */
 569                                 j = 0;
 570                                 memset(tmp_sample, 0, 4);
 571                                 for (i = 0; i < 4; i++) {
 572                                         if (((flag_reg >> 2) & (1 << i)) == 0) {
 573                                                 /*
 574                                                  * This channel group was
 575                                                  * enabled, copy from received
 576                                                  * sample.
 577                                                  */
 578                                                 tmp_sample[i] = sample[j++];
 579                                         }
 580                                 }
 581                                 memcpy(sample, tmp_sample, 4);
 582                                 g_debug("full sample 0x%.8x", (int) *sample);
 583                         }
 584
 585                         /* the OLS sends its sample buffer backwards.
 586                          * store it in reverse order here, so we can dump
 587                          * this on the session bus later.
 588                          */
 589                         offset = (limit_samples - num_transfers / num_channels) * 4;
 590                         memcpy(raw_sample_buf + offset, sample, 4);
 591
 592                         if (buffer == sample)
 593                                 memcpy(last_sample, buffer, num_channels);
 594                         else
 595                                 g_free(buffer);
 596
 597                         memset(sample, 0, 4);
 598                         num_bytes = 0;
 599                 }
 600         } else {
 601                 /*
 602                  * This is the main loop telling us a timeout was reached, or
 603                  * we've acquired all the samples we asked for -- we're done.
 604                  * Send the (properly-ordered) buffer to the frontend.
 605                  */
 606                 if (trigger_at != -1) {
 607                         /* a trigger was set up, so we need to tell the frontend
 608                          * about it.
 609                          */
 610                         if (trigger_at > 0) {
 611                                 /* there are pre-trigger samples, send those first */
 612                                 packet.type = DF_LOGIC32;
 613                                 packet.length = trigger_at * 4;
 614                                 packet.payload = raw_sample_buf;
 615                                 session_bus(user_data, &packet);
 616                         }
 617
 618                         packet.type = DF_TRIGGER;
 619                         packet.length = 0;
 620                         session_bus(user_data, &packet);
 621
 622                         packet.type = DF_LOGIC32;
 623                         packet.length = (limit_samples * 4) - (trigger_at * 4);
 624                         packet.payload = raw_sample_buf + trigger_at * 4;
 625                         session_bus(user_data, &packet);
 626                 } else {
 627                         packet.type = DF_LOGIC32;
 628                         packet.length = limit_samples * 4;
 629                         packet.payload = raw_sample_buf;
 630                         session_bus(user_data, &packet);
 631                 }
 632                 free(raw_sample_buf);
 633
 634 #ifndef _WIN32
 635                 /* TODO: Move to serial.c? */
 636                 tcflush(fd, TCIOFLUSH);
 637 #endif
 638                 serial_close(fd);
 639                 packet.type = DF_END;
 640                 packet.length = 0;
 641                 session_bus(user_data, &packet);
 642         }
 643
 644         return TRUE;
 645 }
 646
 647 static int hw_start_acquisition(int device_index, gpointer session_device_id)
 648 {
 649         int i;
 650         struct datafeed_packet *packet;
 651         struct datafeed_header *header;
 652         struct sigrok_device_instance *sdi;
 653         uint32_t trigger_config[4];
 654         uint32_t data;
 655         uint16_t readcount, delaycount;
 656         uint8_t changrp_mask;
 657
 658         if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 659                 return SIGROK_ERR;
 660
 661         if (sdi->status != ST_ACTIVE)
 662                 return SIGROK_ERR;
 663
 664         readcount = limit_samples / 4;
 665
 666         memset(trigger_config, 0, 16);
 667         trigger_config[num_stages-1] |= 0x08;
 668         if (trigger_mask[0]) {
 669                 delaycount = readcount * (1 - capture_ratio / 100.0);
 670                 trigger_at = (readcount - delaycount) * 4 - num_stages;
 671                 g_message("ta %d", trigger_at);
 672
 673                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0,
 674                         reverse32(trigger_mask[0])) != SIGROK_OK)
 675                         return SIGROK_ERR;
 676                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0,
 677                         reverse32(trigger_value[0])) != SIGROK_OK)
 678                         return SIGROK_ERR;
 679                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
 680                         trigger_config[0]) != SIGROK_OK)
 681                         return SIGROK_ERR;
 682
 683                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_1,
 684                         reverse32(trigger_mask[1])) != SIGROK_OK)
 685                         return SIGROK_ERR;
 686                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_1,
 687                         reverse32(trigger_value[1])) != SIGROK_OK)
 688                         return SIGROK_ERR;
 689                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_1,
 690                         trigger_config[1]) != SIGROK_OK)
 691                         return SIGROK_ERR;
 692
 693                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_2,
 694                         reverse32(trigger_mask[2])) != SIGROK_OK)
 695                         return SIGROK_ERR;
 696                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_2,
 697                         reverse32(trigger_value[2])) != SIGROK_OK)
 698                         return SIGROK_ERR;
 699                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_2,
 700                         trigger_config[2]) != SIGROK_OK)
 701                         return SIGROK_ERR;
 702
 703                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_3,
 704                         reverse32(trigger_mask[3])) != SIGROK_OK)
 705                         return SIGROK_ERR;
 706                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_3,
 707                         reverse32(trigger_value[3])) != SIGROK_OK)
 708                         return SIGROK_ERR;
 709                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_3,
 710                         trigger_config[3]) != SIGROK_OK)
 711                         return SIGROK_ERR;
 712         } else {
 713                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0,
 714                      trigger_mask[0]) != SIGROK_OK)
 715                         return SIGROK_ERR;
 716                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0,
 717                      trigger_value[0]) != SIGROK_OK)
 718                         return SIGROK_ERR;
 719                 if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
 720                      0x00000008) != SIGROK_OK)
 721                         return SIGROK_ERR;
 722                 delaycount = readcount;
 723         }
 724
 725         set_configuration_samplerate(sdi, cur_samplerate);
 726
 727         /* Send sample limit and pre/post-trigger capture ratio. */
 728         data = ((readcount - 1) & 0xffff) << 16;
 729         data |= (delaycount - 1) & 0xffff;
 730         if (send_longcommand(sdi->serial->fd, CMD_CAPTURE_SIZE, reverse16(data)) != SIGROK_OK)
 731                 return SIGROK_ERR;
 732
 733         /*
 734          * Enable/disable channel groups in the flag register according to the
 735          * probe mask.
 736          */
 737         changrp_mask = 0;
 738         for (i = 0; i < 4; i++) {
 739                 if (probe_mask & (0xff << (i * 8)))
 740                         changrp_mask |= (1 << i);
 741         }
 742         g_message("changrp_mask 0x%.2x", changrp_mask);
 743
 744         /* The flag register wants them here, and 1 means "disable channel". */
 745         flag_reg |= ~(changrp_mask << 2) & 0x3c;
 746         g_message("flag_reg 0x%.2x", flag_reg & 0x3c);
 747
 748         flag_reg |= FLAG_FILTER;
 749         data = flag_reg << 24;
 750         if (send_longcommand(sdi->serial->fd, CMD_SET_FLAGS, data) != SIGROK_OK)
 751                 return SIGROK_ERR;
 752
 753         /* Start acquisition on the device. */
 754         if (send_shortcommand(sdi->serial->fd, CMD_RUN) != SIGROK_OK)
 755                 return SIGROK_ERR;
 756
 757         source_add(sdi->serial->fd, G_IO_IN, -1, receive_data,
 758                    session_device_id);
 759
 760         /* Send header packet to the session bus. */
 761         packet = g_malloc(sizeof(struct datafeed_packet));
 762         header = g_malloc(sizeof(struct datafeed_header));
 763         if (!packet || !header)
 764                 return SIGROK_ERR;
 765         packet->type = DF_HEADER;
 766         packet->length = sizeof(struct datafeed_header);
 767         packet->payload = (unsigned char *)header;
 768         header->feed_version = 1;
 769         gettimeofday(&header->starttime, NULL);
 770         header->samplerate = cur_samplerate;
 771         header->protocol_id = PROTO_RAW;
 772         header->num_probes = NUM_PROBES;
 773         session_bus(session_device_id, packet);
 774         g_free(header);
 775         g_free(packet);
 776
 777         return SIGROK_OK;
 778 }
 779
 780 static void hw_stop_acquisition(int device_index, gpointer session_device_id)
 781 {
 782         struct datafeed_packet packet;
 783
 784         /* QUICK HACK */
 785         device_index = device_index;
 786
 787         packet.type = DF_END;
 788         packet.length = 0;
 789         session_bus(session_device_id, &packet);
 790 }
 791
 792 struct device_plugin ols_plugin_info = {
 793         "sump",
 794         1,
 795         hw_init,
 796         hw_cleanup,
 797         hw_opendev,
 798         hw_closedev,
 799         hw_get_device_info,
 800         hw_get_status,
 801         hw_get_capabilities,
 802         hw_set_configuration,
 803         hw_start_acquisition,
 804         hw_stop_acquisition,
 805 };