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 #include <termios.h>
  28 #include <string.h>
  29 #include <sys/time.h>
  30 #include <inttypes.h>
  31 #include <glib.h>
  32 #include "sigrok.h"
  33
  34 #define NUM_PROBES                              32
  35 #define NUM_TRIGGER_STAGES              4
  36 #define TRIGGER_TYPES                   "01"
  37 #define SERIAL_SPEED                    B115200
  38 /* TODO: SERIAL_ bits, parity, stop bit */
  39 #define CLOCK_RATE                              100000000
  40
  41
  42 /* command opcodes */
  43 #define CMD_RESET                                       0x00
  44 #define CMD_ID                                          0x02
  45 #define CMD_SET_FLAGS                           0x82
  46 #define CMD_SET_DIVIDER                 0x80
  47 #define CMD_RUN                                 0x01
  48 #define CMD_CAPTURE_SIZE                        0x81
  49 #define CMD_SET_TRIGGER_MASK_0          0xc0
  50 #define CMD_SET_TRIGGER_MASK_1          0xc4
  51 #define CMD_SET_TRIGGER_MASK_2          0xc8
  52 #define CMD_SET_TRIGGER_MASK_3          0xcc
  53 #define CMD_SET_TRIGGER_VALUE_0 0xc1
  54 #define CMD_SET_TRIGGER_VALUE_1 0xc5
  55 #define CMD_SET_TRIGGER_VALUE_2 0xc9
  56 #define CMD_SET_TRIGGER_VALUE_3 0xcd
  57 #define CMD_SET_TRIGGER_CONFIG_0        0xc2
  58 #define CMD_SET_TRIGGER_CONFIG_1        0xc6
  59 #define CMD_SET_TRIGGER_CONFIG_2        0xca
  60 #define CMD_SET_TRIGGER_CONFIG_3        0xce
  61
  62 /* bitmasks for CMD_FLAGS */
  63 #define FLAG_DEMUX                              0x01
  64 #define FLAG_FILTER                     0x02
  65 #define FLAG_CHANNELGROUP_1     0x04
  66 #define FLAG_CHANNELGROUP_2     0x08
  67 #define FLAG_CHANNELGROUP_3     0x10
  68 #define FLAG_CHANNELGROUP_4     0x20
  69 #define FLAG_CLOCK_EXTERNAL     0x40
  70 #define FLAG_CLOCK_INVERTED     0x80
  71 #define FLAG_RLE                                0x0100
  72
  73
  74 static int capabilities[] = {
  75         HWCAP_LOGIC_ANALYZER,
  76         HWCAP_SAMPLERATE,
  77         HWCAP_CAPTURE_RATIO,
  78         HWCAP_LIMIT_SAMPLES,
  79         0
  80 };
  81
  82 static struct samplerates samplerates = {
  83         1,
  84         MHZ(200),
  85         1,
  86         0
  87 };
  88
  89 /* list of struct serial_device_instance  */
  90 static GSList *device_instances = NULL;
  91
  92 /* current state of the flag register */
  93 uint32_t flag_reg = 0;
  94
  95 static uint64_t cur_samplerate = 0;
  96 static uint64_t limit_samples = 0;
  97 /* pre/post trigger capture ratio, in percentage. 0 means no pre-trigger data. */
  98 int capture_ratio = 0;
  99 static uint32_t probe_mask = 0, trigger_mask[4] = {0}, trigger_value[4] = {0};
 100
 101
 102
 103 int send_shortcommand(int fd, uint8_t command)
 104 {
 105         char buf[1];
 106
 107         g_message("ols: sending cmd 0x%.2x", command);
 108         buf[0] = command;
 109         if(write(fd, buf, 1) != 1)
 110                 return SIGROK_NOK;
 111
 112         return SIGROK_OK;
 113 }
 114
 115
 116 int send_longcommand(int fd, uint8_t command, uint32_t data)
 117 {
 118         char buf[5];
 119
 120         g_message("ols: sending cmd 0x%.2x data 0x%.8x", command, data);
 121         buf[0] = command;
 122         buf[1] = data & 0xff;
 123         buf[2] = data & 0xff00 >> 8;
 124         buf[3] = data & 0xff0000 >> 16;
 125         buf[4] = data & 0xff000000 >> 24;
 126         if(write(fd, buf, 5) != 5)
 127                 return SIGROK_NOK;
 128
 129         return SIGROK_OK;
 130 }
 131
 132 static int configure_probes(GSList *probes)
 133 {
 134         struct probe *probe;
 135         GSList *l;
 136         int probe_bit, changrp_mask, stage, i;
 137         char *tc;
 138
 139         probe_mask = 0;
 140         for(i = 0; i < NUM_TRIGGER_STAGES; i++)
 141         {
 142                 trigger_mask[i] = 0;
 143                 trigger_value[i] = 0;
 144         }
 145
 146         for(l = probes; l; l = l->next)
 147         {
 148                 probe = (struct probe *) l->data;
 149                 probe_bit = 1 << (probe->index - 1);
 150                 probe_mask |= probe_bit;
 151                 if(probe->trigger)
 152                 {
 153                         stage = 0;
 154                         for(tc = probe->trigger; *tc; tc++)
 155                         {
 156                                 trigger_mask[stage] |= probe_bit;
 157                                 if(*tc == '1')
 158                                         trigger_value[stage] |= probe_bit;
 159                                 stage++;
 160                                 if(stage > 3)
 161                                 {
 162                                         /* only supporting parallel mode, with up to 4 stages */
 163                                         return SIGROK_NOK;
 164                                 }
 165                         }
 166                 }
 167         }
 168
 169         /* enable/disable channel groups in the flag register according
 170          * to the probe mask we just made. The register stores them backwards,
 171          * hence shift right from 1000.
 172          */
 173         changrp_mask = 0;
 174         for(i = 0; i < 4; i++)
 175         {
 176                 if(probe_mask & (0xff << i))
 177                         changrp_mask |= 8 >> i;
 178         }
 179         /* but the flag register wants them here */
 180         flag_reg |= changrp_mask << 2;
 181
 182         return SIGROK_OK;
 183 }
 184
 185
 186 static int hw_init(char *deviceinfo)
 187 {
 188         struct sigrok_device_instance *sdi;
 189         GSList *ports, *l;
 190         GPollFD *fds;
 191         struct termios term, *prev_termios;
 192         int devcnt, final_devcnt, num_ports, fd, i;
 193         char buf[8], **device_names;
 194
 195         if(deviceinfo)
 196                 ports = g_slist_append(NULL, g_strdup(deviceinfo));
 197         else
 198                 /* no specific device given, so scan all serial ports */
 199                 ports = list_serial_ports();
 200
 201         num_ports = g_slist_length(ports);
 202         fds = g_malloc0(num_ports * sizeof(GPollFD));
 203         device_names = g_malloc(num_ports * (sizeof(char *)));
 204         prev_termios = g_malloc(num_ports * sizeof(struct termios));
 205         devcnt = 0;
 206         for(l = ports; l; l = l->next) {
 207                 /* The discovery procedure is like this: first send the Reset command (0x00) 5 times,
 208                  * since the device could be anywhere in a 5-byte command. Then send the ID command
 209                  * (0x02). If the device responds with 4 bytes ("OLS1" or "SLA1"), we have a match.
 210                  * Since it may take the device a while to respond at 115Kb/s, we do all the sending
 211                  * first, then wait for all of them to respond with g_poll().
 212                  */
 213                 fd = open(l->data, O_RDWR | O_NONBLOCK);
 214                 if(fd != -1) {
 215                         tcgetattr(fd, &prev_termios[devcnt]);
 216                         tcgetattr(fd, &term);
 217                         cfsetispeed(&term, SERIAL_SPEED);
 218                         tcsetattr(fd, TCSADRAIN, &term);
 219                         memset(buf, CMD_RESET, 5);
 220                         buf[5] = CMD_ID;
 221                         if(write(fd, buf, 6) == 6) {
 222                                 fds[devcnt].fd = fd;
 223                                 fds[devcnt].events = G_IO_IN;
 224                                 device_names[devcnt] = l->data;
 225                                 devcnt++;
 226                                 g_message("probed device %s", (char *) l->data);
 227                         }
 228                         else {
 229                                 /* restore port settings. of course, we've crapped all over the port. */
 230                                 tcsetattr(fd, TCSADRAIN, &prev_termios[devcnt]);
 231                                 g_free(l->data);
 232                         }
 233                 }
 234         }
 235
 236         /* 2ms should do it, that's enough time for 28 bytes to go over the bus */
 237         usleep(2000);
 238
 239         final_devcnt = 0;
 240         g_poll(fds, devcnt, 1);
 241         for(i = 0; i < devcnt; i++) {
 242                 if(fds[i].revents == G_IO_IN) {
 243                         if(read(fds[i].fd, buf, 4) == 4) {
 244                                 if(!strncmp(buf, "1SLO", 4) || !strncmp(buf, "1ALS", 4)) {
 245                                         if(!strncmp(buf, "1SLO", 4))
 246                                                 sdi = sigrok_device_instance_new(final_devcnt, ST_INACTIVE,
 247                                                                 "Openbench", "Logic Sniffer", "v1.0");
 248                                         else
 249                                                 sdi = sigrok_device_instance_new(final_devcnt, ST_INACTIVE,
 250                                                                 "Sump", "Logic Analyzer", "v1.0");
 251                                         sdi->serial = serial_device_instance_new(device_names[i], -1);
 252                                         device_instances = g_slist_append(device_instances, sdi);
 253                                         final_devcnt++;
 254                                         fds[i].fd = 0;
 255                                 }
 256                         }
 257                 }
 258
 259                 if(fds[i].fd != 0)
 260                         tcsetattr(fds[i].fd, TCSADRAIN, &prev_termios[i]);
 261                 close(fds[i].fd);
 262         }
 263
 264         g_free(fds);
 265         g_free(device_names);
 266         g_free(prev_termios);
 267         g_slist_free(ports);
 268
 269         return final_devcnt;
 270 }
 271
 272
 273 static int hw_opendev(int device_index)
 274 {
 275         struct sigrok_device_instance *sdi;
 276
 277         if(!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 278                 return SIGROK_NOK;
 279
 280         sdi->serial->fd = open(sdi->serial->port, O_RDWR);
 281         if(sdi->serial->fd == -1)
 282                 return SIGROK_NOK;
 283
 284         sdi->status = ST_ACTIVE;
 285
 286         return SIGROK_OK;
 287 }
 288
 289
 290 static void hw_closedev(int device_index)
 291 {
 292         struct sigrok_device_instance *sdi;
 293
 294         if(!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 295                 return;
 296
 297         if(sdi->serial->fd != -1) {
 298                 close(sdi->serial->fd);
 299                 sdi->serial->fd = -1;
 300                 sdi->status = ST_INACTIVE;
 301         }
 302
 303 }
 304
 305
 306 static void hw_cleanup(void)
 307 {
 308         GSList *l;
 309         struct sigrok_device_instance *sdi;
 310
 311         /* properly close all devices */
 312         for(l = device_instances; l; l = l->next) {
 313                 sdi = l->data;
 314                 if(sdi->serial->fd != -1)
 315                         close(sdi->serial->fd);
 316                 sigrok_device_instance_free(sdi);
 317         }
 318         g_slist_free(device_instances);
 319         device_instances = NULL;
 320
 321 }
 322
 323
 324 static void *hw_get_device_info(int device_index, int device_info_id)
 325 {
 326         struct sigrok_device_instance *sdi;
 327         void *info;
 328
 329         if( !(sdi = get_sigrok_device_instance(device_instances, device_index)) )
 330                 return NULL;
 331
 332         info = NULL;
 333         switch(device_info_id)
 334         {
 335         case DI_INSTANCE:
 336                 info = sdi;
 337                 break;
 338         case DI_NUM_PROBES:
 339                 info = GINT_TO_POINTER(NUM_PROBES);
 340                 break;
 341         case DI_SAMPLERATES:
 342                 info = &samplerates;
 343                 break;
 344         case DI_TRIGGER_TYPES:
 345                 info = (char *) TRIGGER_TYPES;
 346                 break;
 347         case DI_CUR_SAMPLERATE:
 348                 info = &cur_samplerate;
 349                 break;
 350         }
 351
 352         return info;
 353 }
 354
 355
 356 static int hw_get_status(int device_index)
 357 {
 358         struct sigrok_device_instance *sdi;
 359
 360         if(!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 361                 return ST_NOT_FOUND;
 362
 363         return sdi->status;
 364 }
 365
 366
 367 static int *hw_get_capabilities(void)
 368 {
 369
 370         return capabilities;
 371 }
 372
 373
 374 static int set_configuration_samplerate(struct sigrok_device_instance *sdi, uint64_t samplerate)
 375 {
 376         uint32_t divider;
 377
 378         if(samplerate < samplerates.low || samplerate > samplerates.high)
 379                 return SIGROK_ERR_BADVALUE;
 380
 381         if(samplerate  > CLOCK_RATE) {
 382                 flag_reg |= FLAG_DEMUX;
 383                 divider = (uint8_t) (CLOCK_RATE * 2 / samplerate) - 1;
 384         }
 385         else {
 386                 flag_reg &= FLAG_DEMUX;
 387                 divider = (uint8_t) (CLOCK_RATE / samplerate) - 1;
 388         }
 389         divider <<= 8;
 390
 391         g_message("setting samplerate to %"PRIu64" Hz (divider %u, demux %s)", samplerate, divider,
 392                         flag_reg & FLAG_DEMUX ? "on" : "off");
 393         if(send_longcommand(sdi->serial->fd, CMD_SET_DIVIDER, divider) != SIGROK_OK)
 394                 return SIGROK_NOK;
 395         cur_samplerate = samplerate;
 396
 397         return SIGROK_OK;
 398 }
 399
 400
 401 static int hw_set_configuration(int device_index, int capability, void *value)
 402 {
 403         struct sigrok_device_instance *sdi;
 404         int ret;
 405         uint64_t *tmp_u64;
 406
 407         if(!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 408                 return SIGROK_NOK;
 409
 410         if(sdi->status != ST_ACTIVE)
 411                 return SIGROK_NOK;
 412
 413         if(capability == HWCAP_SAMPLERATE) {
 414                 tmp_u64 = value;
 415                 ret = set_configuration_samplerate(sdi, *tmp_u64);
 416         }
 417         else if(capability == HWCAP_PROBECONFIG)
 418                 ret = configure_probes( (GSList *) value);
 419         else if(capability == HWCAP_LIMIT_SAMPLES) {
 420                 limit_samples = strtoull(value, NULL, 10);
 421                 ret = SIGROK_OK;
 422         }
 423         else if(capability == HWCAP_CAPTURE_RATIO) {
 424                 capture_ratio = strtol(value, NULL, 10);
 425                 if(capture_ratio < 0 || capture_ratio > 100) {
 426                         capture_ratio = 0;
 427                         ret = SIGROK_NOK;
 428                 }
 429                 else
 430                         ret = SIGROK_OK;
 431         }
 432         else
 433                 ret = SIGROK_NOK;
 434
 435         return ret;
 436 }
 437
 438
 439 static int receive_data(int fd, int revents, void *user_data)
 440 {
 441         static int num_transfers = 0;
 442         static int num_bytes = 0;
 443         static char last_sample[4] = {0xff};
 444         static unsigned char sample[4];
 445         int count, buflen, i;
 446         struct datafeed_packet packet;
 447         unsigned char byte, *buffer;
 448
 449         if(num_transfers++ == 0) {
 450                 /* first time round, means the device started sending data, and will not
 451                  * stop until done. if it stops sending for longer than it takes to send
 452                  * a byte, that means it's finished. we'll double that to 30ms to be sure...
 453                  */
 454                 source_remove(fd);
 455                 source_add(fd, G_IO_IN, 30, receive_data, user_data);
 456         }
 457
 458         /* TODO: / 4 depends on # of channels used */
 459         if(revents == G_IO_IN && num_transfers / 4 <= limit_samples){
 460                 if(read(fd, &byte, 1) != 1)
 461                         return FALSE;
 462
 463                 sample[num_bytes++] = byte;
 464                 if(num_bytes == 4) {
 465                         g_message("got sample 0x%.2x%.2x%.2x%.2x", sample[3], sample[2], sample[1], sample[0]);
 466                         /* got a full sample */
 467                         if(flag_reg & FLAG_RLE) {
 468                                 /* in RLE mode -1 should never come in as a sample, because
 469                                  * bit 31 is the "count" flag */
 470                                 /* TODO: endianness may be wrong here, could be sample[3] */
 471                                 if(sample[0] & 0x80 && !(last_sample[0] & 0x80)) {
 472                                         count = (int) (*sample) & 0x7fffffff;
 473                                         buffer = g_malloc(count);
 474                                         buflen = 0;
 475                                         for(i = 0; i < count; i++)
 476                                         {
 477                                                 memcpy(buffer + buflen , last_sample, 4);
 478                                                 buflen += 4;
 479                                         }
 480                                 }
 481                                 else {
 482                                         /* just a single sample, next sample will probably be a count
 483                                          * referring to this -- but this one is still a part of the stream
 484                                          */
 485                                         buffer = sample;
 486                                         buflen = 4;
 487                                 }
 488                         }
 489                         else {
 490                                 /* no compression */
 491                                 buffer = sample;
 492                                 buflen = 4;
 493                         }
 494
 495                         /* send it all to the session bus */
 496                         packet.type = DF_LOGIC32;
 497                         packet.length = buflen;
 498                         packet.payload = buffer;
 499                         session_bus(user_data, &packet);
 500                         if(buffer == sample)
 501                                 memcpy(last_sample, buffer, 4);
 502                         else
 503                                 g_free(buffer);
 504
 505                         num_bytes = 0;
 506                 }
 507         }
 508         else {
 509                 /* this is the main loop telling us a timeout was reached -- we're done */
 510                 tcflush(fd, TCIOFLUSH);
 511                 close(fd);
 512                 packet.type = DF_END;
 513                 packet.length = 0;
 514                 session_bus(user_data, &packet);
 515         }
 516
 517         return TRUE;
 518 }
 519
 520
 521 static int hw_start_acquisition(int device_index, gpointer session_device_id)
 522 {
 523         struct datafeed_packet *packet;
 524         struct datafeed_header *header;
 525         struct sigrok_device_instance *sdi;
 526         uint32_t data;
 527
 528         if(!(sdi = get_sigrok_device_instance(device_instances, device_index)))
 529                 return SIGROK_NOK;
 530
 531         if(sdi->status != ST_ACTIVE)
 532                 return SIGROK_NOK;
 533
 534         /* reset again */
 535         if(send_longcommand(sdi->serial->fd, CMD_RESET, 0) != SIGROK_OK)
 536                 return SIGROK_NOK;
 537
 538         /* send flag register */
 539         data = flag_reg << 24;
 540         if(send_longcommand(sdi->serial->fd, CMD_SET_FLAGS, data) != SIGROK_OK)
 541                 return SIGROK_NOK;
 542
 543         /* send sample limit and pre/post-trigger capture ratio */
 544         data = limit_samples / 4 << 16;
 545         if(capture_ratio)
 546                 data |= (limit_samples - (limit_samples / 100 * capture_ratio)) / 4;
 547         data = 0x00190019;
 548         if(send_longcommand(sdi->serial->fd, CMD_CAPTURE_SIZE, data) != SIGROK_OK)
 549                 return SIGROK_NOK;
 550
 551         /* trigger masks */
 552         if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0, trigger_mask[0]) != SIGROK_OK)
 553                 return SIGROK_NOK;
 554 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_1, trigger_mask[1]) != SIGROK_OK)
 555 //              return SIGROK_NOK;
 556 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_2, trigger_mask[2]) != SIGROK_OK)
 557 //              return SIGROK_NOK;
 558 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_3, trigger_mask[3]) != SIGROK_OK)
 559 //              return SIGROK_NOK;
 560
 561         if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0, trigger_value[0]) != SIGROK_OK)
 562                 return SIGROK_NOK;
 563 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_1, trigger_value[1]) != SIGROK_OK)
 564 //              return SIGROK_NOK;
 565 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_2, trigger_value[2]) != SIGROK_OK)
 566 //              return SIGROK_NOK;
 567 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_3, trigger_value[3]) != SIGROK_OK)
 568 //              return SIGROK_NOK;
 569
 570         /* trigger configuration */
 571         /* TODO: the start flag should only be on the last used stage I think... */
 572         if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0, 0x00000008) != SIGROK_OK)
 573                 return SIGROK_NOK;
 574 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_1, 0x00000000) != SIGROK_OK)
 575 //              return SIGROK_NOK;
 576 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_2, 0x00000000) != SIGROK_OK)
 577 //              return SIGROK_NOK;
 578 //      if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_3, 0x00000000) != SIGROK_OK)
 579 //              return SIGROK_NOK;
 580
 581         set_configuration_samplerate(sdi, cur_samplerate);
 582
 583         /* start acquisition on the device */
 584         if(send_shortcommand(sdi->serial->fd, CMD_RUN) != SIGROK_OK)
 585                 return SIGROK_NOK;
 586
 587         source_add(sdi->serial->fd, G_IO_IN, -1, receive_data, session_device_id);
 588
 589         /* send header packet to the session bus */
 590         packet = g_malloc(sizeof(struct datafeed_packet));
 591         header = g_malloc(sizeof(struct datafeed_header));
 592         if(!packet || !header)
 593                 return SIGROK_NOK;
 594         packet->type = DF_HEADER;
 595         packet->length = sizeof(struct datafeed_header);
 596         packet->payload = (unsigned char *) header;
 597         header->feed_version = 1;
 598         gettimeofday(&header->starttime, NULL);
 599         header->samplerate = cur_samplerate;
 600         header->protocol_id = PROTO_RAW;
 601         header->num_probes = NUM_PROBES;
 602         session_bus(session_device_id, packet);
 603         g_free(header);
 604         g_free(packet);
 605
 606         return SIGROK_OK;
 607 }
 608
 609
 610 static void hw_stop_acquisition(int device_index, gpointer session_device_id)
 611 {
 612         struct datafeed_packet packet;
 613
 614         packet.type = DF_END;
 615         packet.length = 0;
 616         session_bus(session_device_id, &packet);
 617
 618 }
 619
 620
 621
 622 struct device_plugin ols_plugin_info = {
 623         "sump",
 624         1,
 625         hw_init,
 626         hw_cleanup,
 627
 628         hw_opendev,
 629         hw_closedev,
 630         hw_get_device_info,
 631         hw_get_status,
 632         hw_get_capabilities,
 633         hw_set_configuration,
 634         hw_start_acquisition,
 635         hw_stop_acquisition
 636 };
 637