hardware/openbench-logic-sniffer/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 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 "protocol.h"
  21 #include <libserialport.h>
  22
  23 #define SERIALCOMM "115200/8n1"
  24
  25 static const int32_t hwopts[] = {
  26         SR_CONF_CONN,
  27         SR_CONF_SERIALCOMM,
  28 };
  29
  30 static const int32_t hwcaps[] = {
  31         SR_CONF_LOGIC_ANALYZER,
  32         SR_CONF_SAMPLERATE,
  33         SR_CONF_TRIGGER_MATCH,
  34         SR_CONF_CAPTURE_RATIO,
  35         SR_CONF_LIMIT_SAMPLES,
  36         SR_CONF_EXTERNAL_CLOCK,
  37         SR_CONF_PATTERN_MODE,
  38         SR_CONF_SWAP,
  39         SR_CONF_RLE,
  40 };
  41
  42 static const int32_t trigger_matches[] = {
  43         SR_TRIGGER_ZERO,
  44         SR_TRIGGER_ONE,
  45 };
  46
  47 #define STR_PATTERN_NONE     "None"
  48 #define STR_PATTERN_EXTERNAL "External"
  49 #define STR_PATTERN_INTERNAL "Internal"
  50
  51 /* Supported methods of test pattern outputs */
  52 enum {
  53         /**
  54          * Capture pins 31:16 (unbuffered wing) output a test pattern
  55          * that can captured on pins 0:15.
  56          */
  57         PATTERN_EXTERNAL,
  58
  59         /** Route test pattern internally to capture buffer. */
  60         PATTERN_INTERNAL,
  61 };
  62
  63 static const char *patterns[] = {
  64         STR_PATTERN_NONE,
  65         STR_PATTERN_EXTERNAL,
  66         STR_PATTERN_INTERNAL,
  67 };
  68
  69 /* Channels are numbered 0-31 (on the PCB silkscreen). */
  70 SR_PRIV const char *ols_channel_names[NUM_CHANNELS + 1] = {
  71         "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
  72         "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
  73         "24", "25", "26", "27", "28", "29", "30", "31",
  74         NULL,
  75 };
  76
  77 /* Default supported samplerates, can be overridden by device metadata. */
  78 static const uint64_t samplerates[] = {
  79         SR_HZ(10),
  80         SR_MHZ(200),
  81         SR_HZ(1),
  82 };
  83
  84 SR_PRIV struct sr_dev_driver ols_driver_info;
  85 static struct sr_dev_driver *di = &ols_driver_info;
  86
  87 static int init(struct sr_context *sr_ctx)
  88 {
  89         return std_init(sr_ctx, di, LOG_PREFIX);
  90 }
  91
  92 static GSList *scan(GSList *options)
  93 {
  94         struct sr_config *src;
  95         struct sr_dev_inst *sdi;
  96         struct drv_context *drvc;
  97         struct dev_context *devc;
  98         struct sr_channel *ch;
  99         struct sr_serial_dev_inst *serial;
 100         GPollFD probefd;
 101         GSList *l, *devices;
 102         int ret, i;
 103         const char *conn, *serialcomm;
 104         char buf[8];
 105
 106         drvc = di->priv;
 107
 108         devices = NULL;
 109
 110         conn = serialcomm = NULL;
 111         for (l = options; l; l = l->next) {
 112                 src = l->data;
 113                 switch (src->key) {
 114                 case SR_CONF_CONN:
 115                         conn = g_variant_get_string(src->data, NULL);
 116                         break;
 117                 case SR_CONF_SERIALCOMM:
 118                         serialcomm = g_variant_get_string(src->data, NULL);
 119                         break;
 120                 }
 121         }
 122         if (!conn)
 123                 return NULL;
 124
 125         if (serialcomm == NULL)
 126                 serialcomm = SERIALCOMM;
 127
 128         if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
 129                 return NULL;
 130
 131         /* The discovery procedure is like this: first send the Reset
 132          * command (0x00) 5 times, since the device could be anywhere
 133          * in a 5-byte command. Then send the ID command (0x02).
 134          * If the device responds with 4 bytes ("OLS1" or "SLA1"), we
 135          * have a match.
 136          */
 137         sr_info("Probing %s.", conn);
 138         if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
 139                 return NULL;
 140
 141         ret = SR_OK;
 142         for (i = 0; i < 5; i++) {
 143                 if ((ret = send_shortcommand(serial, CMD_RESET)) != SR_OK) {
 144                         sr_err("Port %s is not writable.", conn);
 145                         break;
 146                 }
 147         }
 148         if (ret != SR_OK) {
 149                 serial_close(serial);
 150                 sr_err("Could not use port %s. Quitting.", conn);
 151                 return NULL;
 152         }
 153         send_shortcommand(serial, CMD_ID);
 154
 155         /* Wait 10ms for a response. */
 156         g_usleep(10000);
 157
 158         sp_get_port_handle(serial->data, &probefd.fd);
 159         probefd.events = G_IO_IN;
 160         g_poll(&probefd, 1, 1);
 161
 162         if (probefd.revents != G_IO_IN)
 163                 return NULL;
 164         if (serial_read_blocking(serial, buf, 4) != 4)
 165                 return NULL;
 166         if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4))
 167                 return NULL;
 168
 169         /* Definitely using the OLS protocol, check if it supports
 170          * the metadata command.
 171          */
 172         send_shortcommand(serial, CMD_METADATA);
 173         if (g_poll(&probefd, 1, 10) > 0) {
 174                 /* Got metadata. */
 175                 sdi = get_metadata(serial);
 176                 sdi->index = 0;
 177                 devc = sdi->priv;
 178         } else {
 179                 /* Not an OLS -- some other board that uses the sump protocol. */
 180                 sr_info("Device does not support metadata.");
 181                 sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
 182                                 "Sump", "Logic Analyzer", "v1.0");
 183                 sdi->driver = di;
 184                 for (i = 0; i < 32; i++) {
 185                         if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
 186                                         ols_channel_names[i])))
 187                                 return 0;
 188                         sdi->channels = g_slist_append(sdi->channels, ch);
 189                 }
 190                 devc = ols_dev_new();
 191                 sdi->priv = devc;
 192         }
 193         /* Configure samplerate and divider. */
 194         if (ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
 195                 sr_dbg("Failed to set default samplerate (%"PRIu64").",
 196                                 DEFAULT_SAMPLERATE);
 197         sdi->inst_type = SR_INST_SERIAL;
 198         sdi->conn = serial;
 199
 200         drvc->instances = g_slist_append(drvc->instances, sdi);
 201         devices = g_slist_append(devices, sdi);
 202
 203         serial_close(serial);
 204
 205         return devices;
 206 }
 207
 208 static GSList *dev_list(void)
 209 {
 210         return ((struct drv_context *)(di->priv))->instances;
 211 }
 212
 213 static int cleanup(void)
 214 {
 215         return std_dev_clear(di, NULL);
 216 }
 217
 218 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
 219                 const struct sr_channel_group *cg)
 220 {
 221         struct dev_context *devc;
 222
 223         (void)cg;
 224
 225         if (!sdi)
 226                 return SR_ERR_ARG;
 227
 228         devc = sdi->priv;
 229         switch (id) {
 230         case SR_CONF_SAMPLERATE:
 231                 *data = g_variant_new_uint64(devc->cur_samplerate);
 232                 break;
 233         case SR_CONF_CAPTURE_RATIO:
 234                 *data = g_variant_new_uint64(devc->capture_ratio);
 235                 break;
 236         case SR_CONF_LIMIT_SAMPLES:
 237                 *data = g_variant_new_uint64(devc->limit_samples);
 238                 break;
 239         case SR_CONF_PATTERN_MODE:
 240                 if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE)
 241                         *data = g_variant_new_string(STR_PATTERN_EXTERNAL);
 242                 else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE)
 243                         *data = g_variant_new_string(STR_PATTERN_INTERNAL);
 244                 else
 245                         *data = g_variant_new_string(STR_PATTERN_NONE);
 246                 break;
 247         case SR_CONF_RLE:
 248                 *data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE);
 249                 break;
 250         default:
 251                 return SR_ERR_NA;
 252         }
 253
 254         return SR_OK;
 255 }
 256
 257 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
 258                 const struct sr_channel_group *cg)
 259 {
 260         struct dev_context *devc;
 261         uint16_t flag;
 262         uint64_t tmp_u64;
 263         int ret;
 264         const char *stropt;
 265
 266         (void)cg;
 267
 268         if (sdi->status != SR_ST_ACTIVE)
 269                 return SR_ERR_DEV_CLOSED;
 270
 271         devc = sdi->priv;
 272
 273         switch (id) {
 274         case SR_CONF_SAMPLERATE:
 275                 tmp_u64 = g_variant_get_uint64(data);
 276                 if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1])
 277                         return SR_ERR_SAMPLERATE;
 278                 ret = ols_set_samplerate(sdi, g_variant_get_uint64(data));
 279                 break;
 280         case SR_CONF_LIMIT_SAMPLES:
 281                 tmp_u64 = g_variant_get_uint64(data);
 282                 if (tmp_u64 < MIN_NUM_SAMPLES)
 283                         return SR_ERR;
 284                 devc->limit_samples = tmp_u64;
 285                 ret = SR_OK;
 286                 break;
 287         case SR_CONF_CAPTURE_RATIO:
 288                 devc->capture_ratio = g_variant_get_uint64(data);
 289                 if (devc->capture_ratio < 0 || devc->capture_ratio > 100) {
 290                         devc->capture_ratio = 0;
 291                         ret = SR_ERR;
 292                 } else
 293                         ret = SR_OK;
 294                 break;
 295         case SR_CONF_EXTERNAL_CLOCK:
 296                 if (g_variant_get_boolean(data)) {
 297                         sr_info("Enabling external clock.");
 298                         devc->flag_reg |= FLAG_CLOCK_EXTERNAL;
 299                 } else {
 300                         sr_info("Disabled external clock.");
 301                         devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL;
 302                 }
 303                 ret = SR_OK;
 304                 break;
 305         case SR_CONF_PATTERN_MODE:
 306                 stropt = g_variant_get_string(data, NULL);
 307                 ret = SR_OK;
 308                 flag = 0xffff;
 309                 if (!strcmp(stropt, STR_PATTERN_NONE)) {
 310                         sr_info("Disabling test modes.");
 311                         flag = 0x0000;
 312                 }else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) {
 313                         sr_info("Enabling internal test mode.");
 314                         flag = FLAG_INTERNAL_TEST_MODE;
 315                 } else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) {
 316                         sr_info("Enabling external test mode.");
 317                         flag = FLAG_EXTERNAL_TEST_MODE;
 318                 } else {
 319                         ret = SR_ERR;
 320                 }
 321                 if (flag != 0xffff) {
 322                         devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE);
 323                         devc->flag_reg |= flag;
 324                 }
 325                 break;
 326         case SR_CONF_SWAP:
 327                 if (g_variant_get_boolean(data)) {
 328                         sr_info("Enabling channel swapping.");
 329                         devc->flag_reg |= FLAG_SWAP_CHANNELS;
 330                 } else {
 331                         sr_info("Disabling channel swapping.");
 332                         devc->flag_reg &= ~FLAG_SWAP_CHANNELS;
 333                 }
 334                 ret = SR_OK;
 335                 break;
 336
 337         case SR_CONF_RLE:
 338                 if (g_variant_get_boolean(data)) {
 339                         sr_info("Enabling RLE.");
 340                         devc->flag_reg |= FLAG_RLE;
 341                 } else {
 342                         sr_info("Disabling RLE.");
 343                         devc->flag_reg &= ~FLAG_RLE;
 344                 }
 345                 ret = SR_OK;
 346                 break;
 347         default:
 348                 ret = SR_ERR_NA;
 349         }
 350
 351         return ret;
 352 }
 353
 354 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
 355                 const struct sr_channel_group *cg)
 356 {
 357         struct dev_context *devc;
 358         GVariant *gvar, *grange[2];
 359         GVariantBuilder gvb;
 360         int num_ols_changrp, i;
 361
 362         (void)cg;
 363
 364         switch (key) {
 365         case SR_CONF_SCAN_OPTIONS:
 366                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 367                                 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
 368                 break;
 369         case SR_CONF_DEVICE_OPTIONS:
 370                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 371                                 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
 372                 break;
 373         case SR_CONF_SAMPLERATE:
 374                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 375                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
 376                                 ARRAY_SIZE(samplerates), sizeof(uint64_t));
 377                 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
 378                 *data = g_variant_builder_end(&gvb);
 379                 break;
 380         case SR_CONF_TRIGGER_MATCH:
 381                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 382                                 trigger_matches, ARRAY_SIZE(trigger_matches),
 383                                 sizeof(int32_t));
 384                 break;
 385         case SR_CONF_PATTERN_MODE:
 386                 *data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns));
 387                 break;
 388         case SR_CONF_LIMIT_SAMPLES:
 389                 if (!sdi)
 390                         return SR_ERR_ARG;
 391                 devc = sdi->priv;
 392                 if (devc->flag_reg & FLAG_RLE)
 393                         return SR_ERR_NA;
 394                 if (devc->max_samples == 0)
 395                         /* Device didn't specify sample memory size in metadata. */
 396                         return SR_ERR_NA;
 397                 /*
 398                  * Channel groups are turned off if no channels in that group are
 399                  * enabled, making more room for samples for the enabled group.
 400                 */
 401                 ols_channel_mask(sdi);
 402                 num_ols_changrp = 0;
 403                 for (i = 0; i < 4; i++) {
 404                         if (devc->channel_mask & (0xff << (i * 8)))
 405                                 num_ols_changrp++;
 406                 }
 407                 grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
 408                 if (num_ols_changrp)
 409                         grange[1] = g_variant_new_uint64(devc->max_samples / num_ols_changrp);
 410                 else
 411                         grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES);
 412                 *data = g_variant_new_tuple(grange, 2);
 413                 break;
 414         default:
 415                 return SR_ERR_NA;
 416         }
 417
 418         return SR_OK;
 419 }
 420
 421 static int set_trigger(const struct sr_dev_inst *sdi, int stage)
 422 {
 423         struct dev_context *devc;
 424         struct sr_serial_dev_inst *serial;
 425         uint8_t cmd, arg[4];
 426
 427         devc = sdi->priv;
 428         serial = sdi->conn;
 429
 430         cmd = CMD_SET_TRIGGER_MASK + stage * 4;
 431         arg[0] = devc->trigger_mask[stage] & 0xff;
 432         arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff;
 433         arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff;
 434         arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff;
 435         if (send_longcommand(serial, cmd, arg) != SR_OK)
 436                 return SR_ERR;
 437
 438         cmd = CMD_SET_TRIGGER_VALUE + stage * 4;
 439         arg[0] = devc->trigger_value[stage] & 0xff;
 440         arg[1] = (devc->trigger_value[stage] >> 8) & 0xff;
 441         arg[2] = (devc->trigger_value[stage] >> 16) & 0xff;
 442         arg[3] = (devc->trigger_value[stage] >> 24) & 0xff;
 443         if (send_longcommand(serial, cmd, arg) != SR_OK)
 444                 return SR_ERR;
 445
 446         cmd = CMD_SET_TRIGGER_CONFIG + stage * 4;
 447         arg[0] = arg[1] = arg[3] = 0x00;
 448         arg[2] = stage;
 449         if (stage == devc->num_stages)
 450                 /* Last stage, fire when this one matches. */
 451                 arg[3] |= TRIGGER_START;
 452         if (send_longcommand(serial, cmd, arg) != SR_OK)
 453                 return SR_ERR;
 454
 455         return SR_OK;
 456 }
 457
 458 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
 459                 void *cb_data)
 460 {
 461         struct dev_context *devc;
 462         struct sr_serial_dev_inst *serial;
 463         uint16_t samplecount, readcount, delaycount;
 464         uint8_t ols_changrp_mask, arg[4];
 465         int num_ols_changrp;
 466         int ret, i;
 467
 468         if (sdi->status != SR_ST_ACTIVE)
 469                 return SR_ERR_DEV_CLOSED;
 470
 471         devc = sdi->priv;
 472         serial = sdi->conn;
 473
 474         ols_channel_mask(sdi);
 475
 476         num_ols_changrp = 0;
 477         ols_changrp_mask = 0;
 478         for (i = 0; i < 4; i++) {
 479                 if (devc->channel_mask & (0xff << (i * 8))) {
 480                         ols_changrp_mask |= (1 << i);
 481                         num_ols_changrp++;
 482                 }
 483         }
 484
 485         /*
 486          * Limit readcount to prevent reading past the end of the hardware
 487          * buffer.
 488          */
 489         samplecount = MIN(devc->max_samples / num_ols_changrp, devc->limit_samples);
 490         readcount = samplecount / 4;
 491
 492         /* Rather read too many samples than too few. */
 493         if (samplecount % 4 != 0)
 494                 readcount++;
 495
 496         /* Basic triggers. */
 497         if (ols_convert_trigger(sdi) != SR_OK) {
 498                 sr_err("Failed to configure channels.");
 499                 return SR_ERR;
 500         }
 501         if (devc->num_stages > 0) {
 502                 delaycount = readcount * (1 - devc->capture_ratio / 100.0);
 503                 devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
 504                 for (i = 0; i <= devc->num_stages; i++) {
 505                         sr_dbg("Setting OLS stage %d trigger.", i);
 506                         if ((ret = set_trigger(sdi, i)) != SR_OK)
 507                                 return ret;
 508                 }
 509         } else {
 510                 /* No triggers configured, force trigger on first stage. */
 511                 sr_dbg("Forcing trigger at stage 0.");
 512                 if ((ret = set_trigger(sdi, 0)) != SR_OK)
 513                         return ret;
 514                 delaycount = readcount;
 515         }
 516
 517         /* Samplerate. */
 518         sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)",
 519                         devc->cur_samplerate, devc->cur_samplerate_divider);
 520         arg[0] = devc->cur_samplerate_divider & 0xff;
 521         arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8;
 522         arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16;
 523         arg[3] = 0x00;
 524         if (send_longcommand(serial, CMD_SET_DIVIDER, arg) != SR_OK)
 525                 return SR_ERR;
 526
 527         /* Send sample limit and pre/post-trigger capture ratio. */
 528         sr_dbg("Setting sample limit %d, trigger point at %d",
 529                         (readcount - 1) * 4, (delaycount - 1) * 4);
 530         arg[0] = ((readcount - 1) & 0xff);
 531         arg[1] = ((readcount - 1) & 0xff00) >> 8;
 532         arg[2] = ((delaycount - 1) & 0xff);
 533         arg[3] = ((delaycount - 1) & 0xff00) >> 8;
 534         if (send_longcommand(serial, CMD_CAPTURE_SIZE, arg) != SR_OK)
 535                 return SR_ERR;
 536
 537         /* Flag register. */
 538         sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s",
 539                         devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off",
 540                         devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off",
 541                         devc->flag_reg & FLAG_RLE ? "on" : "off",
 542                         devc->flag_reg & FLAG_FILTER ? "on": "off",
 543                         devc->flag_reg & FLAG_DEMUX ? "on" : "off");
 544         /*
 545          * Enable/disable OLS channel groups in the flag register according
 546          * to the channel mask. 1 means "disable channel".
 547          */
 548         devc->flag_reg |= ~(ols_changrp_mask << 2) & 0x3c;
 549         arg[0] = devc->flag_reg & 0xff;
 550         arg[1] = devc->flag_reg >> 8;
 551         arg[2] = arg[3] = 0x00;
 552         if (send_longcommand(serial, CMD_SET_FLAGS, arg) != SR_OK)
 553                 return SR_ERR;
 554
 555         /* Start acquisition on the device. */
 556         if (send_shortcommand(serial, CMD_RUN) != SR_OK)
 557                 return SR_ERR;
 558
 559         /* Reset all operational states. */
 560         devc->rle_count = devc->num_transfers = 0;
 561         devc->num_samples = devc->num_bytes = 0;
 562         devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0;
 563         memset(devc->sample, 0, 4);
 564
 565         /* Send header packet to the session bus. */
 566         std_session_send_df_header(cb_data, LOG_PREFIX);
 567
 568         serial_source_add(sdi->session, serial, G_IO_IN, -1,
 569                         ols_receive_data, cb_data);
 570
 571         return SR_OK;
 572 }
 573
 574 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 575 {
 576         (void)cb_data;
 577
 578         abort_acquisition(sdi);
 579
 580         return SR_OK;
 581 }
 582
 583 SR_PRIV struct sr_dev_driver ols_driver_info = {
 584         .name = "ols",
 585         .longname = "Openbench Logic Sniffer",
 586         .api_version = 1,
 587         .init = init,
 588         .cleanup = cleanup,
 589         .scan = scan,
 590         .dev_list = dev_list,
 591         .dev_clear = NULL,
 592         .config_get = config_get,
 593         .config_set = config_set,
 594         .config_list = config_list,
 595         .dev_open = std_serial_dev_open,
 596         .dev_close = std_serial_dev_close,
 597         .dev_acquisition_start = dev_acquisition_start,
 598         .dev_acquisition_stop = dev_acquisition_stop,
 599         .priv = NULL,
 600 };