hardware/serial-dmm/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
   5  * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
   6  * Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
   7  *
   8  * This program is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <fcntl.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <glib.h>
  28 #include "libsigrok.h"
  29 #include "libsigrok-internal.h"
  30 #include "protocol.h"
  31
  32 static const int32_t hwopts[] = {
  33         SR_CONF_CONN,
  34         SR_CONF_SERIALCOMM,
  35 };
  36
  37 static const int32_t hwcaps[] = {
  38         SR_CONF_MULTIMETER,
  39         SR_CONF_LIMIT_SAMPLES,
  40         SR_CONF_LIMIT_MSEC,
  41         SR_CONF_CONTINUOUS,
  42 };
  43
  44 SR_PRIV struct sr_dev_driver digitek_dt4000zc_driver_info;
  45 SR_PRIV struct sr_dev_driver tekpower_tp4000zc_driver_info;
  46 SR_PRIV struct sr_dev_driver metex_me31_driver_info;
  47 SR_PRIV struct sr_dev_driver peaktech_3410_driver_info;
  48 SR_PRIV struct sr_dev_driver mastech_mas345_driver_info;
  49 SR_PRIV struct sr_dev_driver va_va18b_driver_info;
  50 SR_PRIV struct sr_dev_driver metex_m3640d_driver_info;
  51 SR_PRIV struct sr_dev_driver peaktech_4370_driver_info;
  52 SR_PRIV struct sr_dev_driver pce_pce_dm32_driver_info;
  53 SR_PRIV struct sr_dev_driver radioshack_22_168_driver_info;
  54 SR_PRIV struct sr_dev_driver radioshack_22_805_driver_info;
  55 SR_PRIV struct sr_dev_driver radioshack_22_812_driver_info;
  56 SR_PRIV struct sr_dev_driver tecpel_dmm_8060_ser_driver_info;
  57 SR_PRIV struct sr_dev_driver tecpel_dmm_8061_ser_driver_info;
  58 SR_PRIV struct sr_dev_driver voltcraft_vc820_ser_driver_info;
  59 SR_PRIV struct sr_dev_driver voltcraft_vc840_ser_driver_info;
  60 SR_PRIV struct sr_dev_driver uni_t_ut61d_ser_driver_info;
  61 SR_PRIV struct sr_dev_driver uni_t_ut61e_ser_driver_info;
  62
  63 SR_PRIV struct dmm_info dmms[] = {
  64         {
  65                 "Digitek", "DT4000ZC", "2400/8n1", 2400,
  66                 FS9721_PACKET_SIZE, NULL,
  67                 sr_fs9721_packet_valid, sr_fs9721_parse,
  68                 sr_fs9721_10_temp_c,
  69                 &digitek_dt4000zc_driver_info, receive_data_DIGITEK_DT4000ZC,
  70         },
  71         {
  72                 "TekPower", "TP4000ZC", "2400/8n1", 2400,
  73                 FS9721_PACKET_SIZE, NULL,
  74                 sr_fs9721_packet_valid, sr_fs9721_parse,
  75                 sr_fs9721_10_temp_c,
  76                 &tekpower_tp4000zc_driver_info, receive_data_TEKPOWER_TP4000ZC,
  77         },
  78         {
  79                 "Metex", "ME-31", "600/7n2/rts=0/dtr=1", 600,
  80                 METEX14_PACKET_SIZE, sr_metex14_packet_request,
  81                 sr_metex14_packet_valid, sr_metex14_parse,
  82                 NULL,
  83                 &metex_me31_driver_info, receive_data_METEX_ME31,
  84         },
  85         {
  86                 "Peaktech", "3410", "600/7n2/rts=0/dtr=1", 600,
  87                 METEX14_PACKET_SIZE, sr_metex14_packet_request,
  88                 sr_metex14_packet_valid, sr_metex14_parse,
  89                 NULL,
  90                 &peaktech_3410_driver_info, receive_data_PEAKTECH_3410,
  91         },
  92         {
  93                 "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1", 600,
  94                 METEX14_PACKET_SIZE, sr_metex14_packet_request,
  95                 sr_metex14_packet_valid, sr_metex14_parse,
  96                 NULL,
  97                 &mastech_mas345_driver_info, receive_data_MASTECH_MAS345,
  98         },
  99         {
 100                 "V&A", "VA18B", "2400/8n1", 2400,
 101                 FS9721_PACKET_SIZE, NULL,
 102                 sr_fs9721_packet_valid, sr_fs9721_parse,
 103                 sr_fs9721_01_temp_c,
 104                 &va_va18b_driver_info, receive_data_VA_VA18B,
 105         },
 106         {
 107                 "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1", 1200,
 108                 METEX14_PACKET_SIZE, sr_metex14_packet_request,
 109                 sr_metex14_packet_valid, sr_metex14_parse,
 110                 NULL,
 111                 &metex_m3640d_driver_info, receive_data_METEX_M3640D,
 112         },
 113         {
 114                 "PeakTech", "4370", "1200/7n2/rts=0/dtr=1", 1200,
 115                 METEX14_PACKET_SIZE, sr_metex14_packet_request,
 116                 sr_metex14_packet_valid, sr_metex14_parse,
 117                 NULL,
 118                 &peaktech_4370_driver_info, receive_data_PEAKTECH_4370,
 119         },
 120         {
 121                 "PCE", "PCE-DM32", "2400/8n1", 2400,
 122                 FS9721_PACKET_SIZE, NULL,
 123                 sr_fs9721_packet_valid, sr_fs9721_parse,
 124                 sr_fs9721_01_10_temp_f_c,
 125                 &pce_pce_dm32_driver_info, receive_data_PCE_PCE_DM32,
 126         },
 127         {
 128                 "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1", 1200,
 129                 METEX14_PACKET_SIZE, sr_metex14_packet_request,
 130                 sr_metex14_packet_valid, sr_metex14_parse,
 131                 NULL,
 132                 &radioshack_22_168_driver_info, receive_data_RADIOSHACK_22_168,
 133         },
 134         {
 135                 "RadioShack", "22-805", "600/7n2/rts=0/dtr=1", 600,
 136                 METEX14_PACKET_SIZE, sr_metex14_packet_request,
 137                 sr_metex14_packet_valid, sr_metex14_parse,
 138                 NULL,
 139                 &radioshack_22_805_driver_info, receive_data_RADIOSHACK_22_805,
 140         },
 141         {
 142                 "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1", 4800,
 143                 RS9LCD_PACKET_SIZE, NULL,
 144                 sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
 145                 NULL,
 146                 &radioshack_22_812_driver_info, receive_data_RADIOSHACK_22_812,
 147         },
 148         {
 149                 "Tecpel", "DMM-8060 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 150                 2400, FS9721_PACKET_SIZE, NULL,
 151                 sr_fs9721_packet_valid, sr_fs9721_parse,
 152                 NULL,
 153                 &tecpel_dmm_8060_ser_driver_info,
 154                 receive_data_TECPEL_DMM_8060_SER,
 155         },
 156         {
 157                 "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 158                 2400, FS9721_PACKET_SIZE, NULL,
 159                 sr_fs9721_packet_valid, sr_fs9721_parse,
 160                 sr_fs9721_00_temp_c,
 161                 &tecpel_dmm_8061_ser_driver_info,
 162                 receive_data_TECPEL_DMM_8061_SER,
 163         },
 164         {
 165                 "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 166                 2400, FS9721_PACKET_SIZE, NULL,
 167                 sr_fs9721_packet_valid, sr_fs9721_parse,
 168                 NULL,
 169                 &voltcraft_vc820_ser_driver_info,
 170                 receive_data_VOLTCRAFT_VC820_SER,
 171         },
 172         {
 173                 "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 174                 2400, FS9721_PACKET_SIZE, NULL,
 175                 sr_fs9721_packet_valid, sr_fs9721_parse,
 176                 sr_fs9721_00_temp_c,
 177                 &voltcraft_vc840_ser_driver_info,
 178                 receive_data_VOLTCRAFT_VC840_SER,
 179         },
 180         {
 181                 "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 182                 2400, FS9922_PACKET_SIZE, NULL,
 183                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL,
 184                 &uni_t_ut61d_ser_driver_info, receive_data_UNI_T_UT61D_SER,
 185         },
 186         {
 187                 /* Note: ES51922 baudrate is actually 19230! */
 188                 "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 189                 19200, ES51922_PACKET_SIZE, NULL,
 190                 sr_es51922_packet_valid, sr_es51922_parse, NULL,
 191                 &uni_t_ut61e_ser_driver_info, receive_data_UNI_T_UT61E_SER,
 192         },
 193 };
 194
 195 /* Properly close and free all devices. */
 196 static int clear_instances(int dmm)
 197 {
 198         struct sr_dev_inst *sdi;
 199         struct drv_context *drvc;
 200         struct dev_context *devc;
 201         struct sr_serial_dev_inst *serial;
 202         GSList *l;
 203         struct sr_dev_driver *di;
 204
 205         di = dmms[dmm].di;
 206
 207         if (!(drvc = di->priv))
 208                 return SR_OK;
 209
 210         drvc = di->priv;
 211         for (l = drvc->instances; l; l = l->next) {
 212                 if (!(sdi = l->data))
 213                         continue;
 214                 if (!(devc = sdi->priv))
 215                         continue;
 216                 serial = sdi->conn;
 217                 sr_serial_dev_inst_free(serial);
 218                 sr_dev_inst_free(sdi);
 219         }
 220         g_slist_free(drvc->instances);
 221         drvc->instances = NULL;
 222
 223         return SR_OK;
 224 }
 225
 226 static int hw_init(struct sr_context *sr_ctx, int dmm)
 227 {
 228         sr_dbg("Selected '%s' subdriver.", dmms[dmm].di->name);
 229
 230         return std_hw_init(sr_ctx, dmms[dmm].di, DRIVER_LOG_DOMAIN);
 231 }
 232
 233 static GSList *scan(const char *conn, const char *serialcomm, int dmm)
 234 {
 235         struct sr_dev_inst *sdi;
 236         struct drv_context *drvc;
 237         struct dev_context *devc;
 238         struct sr_probe *probe;
 239         struct sr_serial_dev_inst *serial;
 240         GSList *devices;
 241         int dropped, ret;
 242         size_t len;
 243         uint8_t buf[128];
 244
 245         if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
 246                 return NULL;
 247
 248         if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
 249                 return NULL;
 250
 251         sr_info("Probing serial port %s.", conn);
 252
 253         drvc = dmms[dmm].di->priv;
 254         devices = NULL;
 255         serial_flush(serial);
 256
 257         /* Request a packet if the DMM requires this. */
 258         if (dmms[dmm].packet_request) {
 259                 if ((ret = dmms[dmm].packet_request(serial)) < 0) {
 260                         sr_err("Failed to request packet: %d.", ret);
 261                         return FALSE;
 262                 }
 263         }
 264
 265         /*
 266          * There's no way to get an ID from the multimeter. It just sends data
 267          * periodically (or upon request), so the best we can do is check if
 268          * the packets match the expected format.
 269          */
 270
 271         /* Let's get a bit of data and see if we can find a packet. */
 272         len = sizeof(buf);
 273         ret = serial_stream_detect(serial, buf, &len, dmms[dmm].packet_size,
 274                                    dmms[dmm].packet_valid, 1000,
 275                                    dmms[dmm].baudrate);
 276         if (ret != SR_OK)
 277                 goto scan_cleanup;
 278
 279         /*
 280          * If we dropped more than two packets worth of data, something is
 281          * wrong. We shouldn't quit however, since the dropped bytes might be
 282          * just zeroes at the beginning of the stream. Those can occur as a
 283          * combination of the nonstandard cable that ships with some devices
 284          * and the serial port or USB to serial adapter.
 285          */
 286         dropped = len - dmms[dmm].packet_size;
 287         if (dropped > 2 * dmms[dmm].packet_size)
 288                 sr_warn("Had to drop too much data.");
 289
 290         sr_info("Found device on port %s.", conn);
 291
 292         if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, dmms[dmm].vendor,
 293                                     dmms[dmm].device, "")))
 294                 goto scan_cleanup;
 295
 296         if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 297                 sr_err("Device context malloc failed.");
 298                 goto scan_cleanup;
 299         }
 300
 301         sdi->inst_type = SR_INST_SERIAL;
 302         sdi->conn = serial;
 303
 304         sdi->priv = devc;
 305         sdi->driver = dmms[dmm].di;
 306         if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
 307                 goto scan_cleanup;
 308         sdi->probes = g_slist_append(sdi->probes, probe);
 309         drvc->instances = g_slist_append(drvc->instances, sdi);
 310         devices = g_slist_append(devices, sdi);
 311
 312 scan_cleanup:
 313         serial_close(serial);
 314
 315         return devices;
 316 }
 317
 318 static GSList *hw_scan(GSList *options, int dmm)
 319 {
 320         struct sr_config *src;
 321         GSList *l, *devices;
 322         const char *conn, *serialcomm;
 323
 324         conn = serialcomm = NULL;
 325         for (l = options; l; l = l->next) {
 326                 src = l->data;
 327                 switch (src->key) {
 328                 case SR_CONF_CONN:
 329                         conn = g_variant_get_string(src->data, NULL);
 330                         break;
 331                 case SR_CONF_SERIALCOMM:
 332                         serialcomm = g_variant_get_string(src->data, NULL);
 333                         break;
 334                 }
 335         }
 336         if (!conn)
 337                 return NULL;
 338
 339         if (serialcomm) {
 340                 /* Use the provided comm specs. */
 341                 devices = scan(conn, serialcomm, dmm);
 342         } else {
 343                 /* Try the default. */
 344                 devices = scan(conn, dmms[dmm].conn, dmm);
 345         }
 346
 347         return devices;
 348 }
 349
 350 static GSList *hw_dev_list(int dmm)
 351 {
 352         return ((struct drv_context *)(dmms[dmm].di->priv))->instances;
 353 }
 354
 355 static int hw_dev_open(struct sr_dev_inst *sdi)
 356 {
 357         struct sr_serial_dev_inst *serial;
 358
 359         serial = sdi->conn;
 360         if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
 361                 return SR_ERR;
 362
 363         sdi->status = SR_ST_ACTIVE;
 364
 365         return SR_OK;
 366 }
 367
 368 static int hw_dev_close(struct sr_dev_inst *sdi)
 369 {
 370         struct sr_serial_dev_inst *serial;
 371
 372         serial = sdi->conn;
 373         if (serial && serial->fd != -1) {
 374                 serial_close(serial);
 375                 sdi->status = SR_ST_INACTIVE;
 376         }
 377
 378         return SR_OK;
 379 }
 380
 381 static int hw_cleanup(int dmm)
 382 {
 383         clear_instances(dmm);
 384
 385         return SR_OK;
 386 }
 387
 388 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
 389 {
 390         struct dev_context *devc;
 391
 392         if (sdi->status != SR_ST_ACTIVE)
 393                 return SR_ERR_DEV_CLOSED;
 394
 395         if (!(devc = sdi->priv)) {
 396                 sr_err("sdi->priv was NULL.");
 397                 return SR_ERR_BUG;
 398         }
 399
 400         switch (id) {
 401         case SR_CONF_LIMIT_SAMPLES:
 402                 devc->limit_samples = g_variant_get_uint64(data);
 403                 sr_dbg("Setting sample limit to %" PRIu64 ".",
 404                        devc->limit_samples);
 405                 break;
 406         case SR_CONF_LIMIT_MSEC:
 407                 devc->limit_msec = g_variant_get_uint64(data);
 408                 sr_dbg("Setting time limit to %" PRIu64 "ms.",
 409                        devc->limit_msec);
 410                 break;
 411         default:
 412                 return SR_ERR_NA;
 413         }
 414
 415         return SR_OK;
 416 }
 417
 418 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
 419 {
 420
 421         (void)sdi;
 422
 423         switch (key) {
 424         case SR_CONF_SCAN_OPTIONS:
 425                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 426                                 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
 427                 break;
 428         case SR_CONF_DEVICE_OPTIONS:
 429                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 430                                 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
 431                 break;
 432         default:
 433                 return SR_ERR_NA;
 434         }
 435
 436         return SR_OK;
 437 }
 438
 439 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 440                                     void *cb_data, int dmm)
 441 {
 442         struct dev_context *devc;
 443         struct sr_serial_dev_inst *serial;
 444
 445         if (sdi->status != SR_ST_ACTIVE)
 446                 return SR_ERR_DEV_CLOSED;
 447
 448         if (!(devc = sdi->priv)) {
 449                 sr_err("sdi->priv was NULL.");
 450                 return SR_ERR_BUG;
 451         }
 452
 453         devc->cb_data = cb_data;
 454
 455         /*
 456          * Reset the number of samples to take. If we've already collected our
 457          * quota, but we start a new session, and don't reset this, we'll just
 458          * quit without acquiring any new samples.
 459          */
 460         devc->num_samples = 0;
 461         devc->starttime = g_get_monotonic_time();
 462
 463         /* Send header packet to the session bus. */
 464         std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
 465
 466         /* Poll every 50ms, or whenever some data comes in. */
 467         serial = sdi->conn;
 468         sr_source_add(serial->fd, G_IO_IN, 50,
 469                       dmms[dmm].receive_data, (void *)sdi);
 470
 471         return SR_OK;
 472 }
 473
 474 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 475 {
 476         return std_hw_dev_acquisition_stop_serial(sdi, cb_data, hw_dev_close,
 477                                                   sdi->conn, DRIVER_LOG_DOMAIN);
 478 }
 479
 480 /* Driver-specific API function wrappers */
 481 #define HW_INIT(X) \
 482 static int hw_init_##X(struct sr_context *sr_ctx) { return hw_init(sr_ctx, X); }
 483 #define HW_CLEANUP(X) \
 484 static int hw_cleanup_##X(void) { return hw_cleanup(X); }
 485 #define HW_SCAN(X) \
 486 static GSList *hw_scan_##X(GSList *options) { return hw_scan(options, X); }
 487 #define HW_DEV_LIST(X) \
 488 static GSList *hw_dev_list_##X(void) { return hw_dev_list(X); }
 489 #define CLEAR_INSTANCES(X) \
 490 static int clear_instances_##X(void) { return clear_instances(X); }
 491 #define HW_DEV_ACQUISITION_START(X) \
 492 static int hw_dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
 493 void *cb_data) { return hw_dev_acquisition_start(sdi, cb_data, X); }
 494
 495 /* Driver structs and API function wrappers */
 496 #define DRV(ID, ID_UPPER, NAME, LONGNAME) \
 497 HW_INIT(ID_UPPER) \
 498 HW_CLEANUP(ID_UPPER) \
 499 HW_SCAN(ID_UPPER) \
 500 HW_DEV_LIST(ID_UPPER) \
 501 CLEAR_INSTANCES(ID_UPPER) \
 502 HW_DEV_ACQUISITION_START(ID_UPPER) \
 503 SR_PRIV struct sr_dev_driver ID##_driver_info = { \
 504         .name = NAME, \
 505         .longname = LONGNAME, \
 506         .api_version = 1, \
 507         .init = hw_init_##ID_UPPER, \
 508         .cleanup = hw_cleanup_##ID_UPPER, \
 509         .scan = hw_scan_##ID_UPPER, \
 510         .dev_list = hw_dev_list_##ID_UPPER, \
 511         .dev_clear = clear_instances_##ID_UPPER, \
 512         .config_get = NULL, \
 513         .config_set = config_set, \
 514         .config_list = config_list, \
 515         .dev_open = hw_dev_open, \
 516         .dev_close = hw_dev_close, \
 517         .dev_acquisition_start = hw_dev_acquisition_start_##ID_UPPER, \
 518         .dev_acquisition_stop = hw_dev_acquisition_stop, \
 519         .priv = NULL, \
 520 };
 521
 522 DRV(digitek_dt4000zc, DIGITEK_DT4000ZC, "digitek-dt4000zc", "Digitek DT4000ZC")
 523 DRV(tekpower_tp4000zc, TEKPOWER_TP4000ZC, "tekpower-tp4000zc", "TekPower TP4000ZC")
 524 DRV(metex_me31, METEX_ME31, "metex-me31", "Metex ME-31")
 525 DRV(peaktech_3410, PEAKTECH_3410, "peaktech-3410", "PeakTech 3410")
 526 DRV(mastech_mas345, MASTECH_MAS345, "mastech-mas345", "MASTECH MAS345")
 527 DRV(va_va18b, VA_VA18B, "va-va18b", "V&A VA18B")
 528 DRV(metex_m3640d, METEX_M3640D, "metex-m3640d", "Metex M-3640D")
 529 DRV(peaktech_4370, PEAKTECH_4370, "peaktech-4370", "PeakTech 4370")
 530 DRV(pce_pce_dm32, PCE_PCE_DM32, "pce-pce-dm32", "PCE PCE-DM32")
 531 DRV(radioshack_22_168, RADIOSHACK_22_168, "radioshack-22-168", "RadioShack 22-168")
 532 DRV(radioshack_22_805, RADIOSHACK_22_805, "radioshack-22-805", "RadioShack 22-805")
 533 DRV(radioshack_22_812, RADIOSHACK_22_812, "radioshack-22-812", "RadioShack 22-812")
 534 DRV(tecpel_dmm_8060_ser, TECPEL_DMM_8060_SER, "tecpel-dmm-8060-ser", "Tecpel DMM-8060 (UT-D02 cable)")
 535 DRV(tecpel_dmm_8061_ser, TECPEL_DMM_8061_SER, "tecpel-dmm-8061-ser", "Tecpel DMM-8061 (UT-D02 cable)")
 536 DRV(voltcraft_vc820_ser, VOLTCRAFT_VC820_SER, "voltcraft-vc820-ser", "Voltcraft VC-820 (UT-D02 cable)")
 537 DRV(voltcraft_vc840_ser, VOLTCRAFT_VC840_SER, "voltcraft-vc840-ser", "Voltcraft VC-840 (UT-D02 cable)")
 538 DRV(uni_t_ut61d_ser, UNI_T_UT61D_SER, "uni-t-ut61d-ser", "UNI-T UT61D (UT-D02 cable)")
 539 DRV(uni_t_ut61e_ser, UNI_T_UT61E_SER, "uni-t-ut61e-ser", "UNI-T UT61E (UT-D02 cable)")