src/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 <config.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <fcntl.h>
  26 #include <string.h>
  27 #include <glib.h>
  28 #include <libsigrok/libsigrok.h>
  29 #include "libsigrok-internal.h"
  30 #include "protocol.h"
  31
  32 static const uint32_t scanopts[] = {
  33         SR_CONF_CONN,
  34         SR_CONF_SERIALCOMM,
  35 };
  36
  37 static const uint32_t devopts[] = {
  38         SR_CONF_MULTIMETER,
  39         SR_CONF_CONTINUOUS,
  40         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  41         SR_CONF_LIMIT_MSEC | SR_CONF_SET,
  42 };
  43
  44 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  45 {
  46         struct dmm_info *dmm;
  47         struct sr_config *src;
  48         GSList *l, *devices;
  49         const char *conn, *serialcomm;
  50         struct sr_dev_inst *sdi;
  51         struct dev_context *devc;
  52         struct sr_serial_dev_inst *serial;
  53         int dropped, ret;
  54         size_t len;
  55         uint8_t buf[128];
  56
  57         dmm = (struct dmm_info *)di;
  58
  59         conn = serialcomm = NULL;
  60         for (l = options; l; l = l->next) {
  61                 src = l->data;
  62                 switch (src->key) {
  63                 case SR_CONF_CONN:
  64                         conn = g_variant_get_string(src->data, NULL);
  65                         break;
  66                 case SR_CONF_SERIALCOMM:
  67                         serialcomm = g_variant_get_string(src->data, NULL);
  68                         break;
  69                 }
  70         }
  71         if (!conn)
  72                 return NULL;
  73
  74         if (!serialcomm)
  75                 serialcomm = dmm->conn;
  76
  77         serial = sr_serial_dev_inst_new(conn, serialcomm);
  78
  79         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  80                 return NULL;
  81
  82         sr_info("Probing serial port %s.", conn);
  83
  84         devices = NULL;
  85         serial_flush(serial);
  86
  87         /* Request a packet if the DMM requires this. */
  88         if (dmm->packet_request) {
  89                 if ((ret = dmm->packet_request(serial)) < 0) {
  90                         sr_err("Failed to request packet: %d.", ret);
  91                         return FALSE;
  92                 }
  93         }
  94
  95         /*
  96          * There's no way to get an ID from the multimeter. It just sends data
  97          * periodically (or upon request), so the best we can do is check if
  98          * the packets match the expected format.
  99          */
 100
 101         /* Let's get a bit of data and see if we can find a packet. */
 102         len = sizeof(buf);
 103         ret = serial_stream_detect(serial, buf, &len, dmm->packet_size,
 104                                    dmm->packet_valid, 3000,
 105                                    dmm->baudrate);
 106         if (ret != SR_OK)
 107                 goto scan_cleanup;
 108
 109         /*
 110          * If we dropped more than two packets worth of data, something is
 111          * wrong. We shouldn't quit however, since the dropped bytes might be
 112          * just zeroes at the beginning of the stream. Those can occur as a
 113          * combination of the nonstandard cable that ships with some devices
 114          * and the serial port or USB to serial adapter.
 115          */
 116         dropped = len - dmm->packet_size;
 117         if (dropped > 2 * dmm->packet_size)
 118                 sr_warn("Had to drop too much data.");
 119
 120         sr_info("Found device on port %s.", conn);
 121
 122         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 123         sdi->status = SR_ST_INACTIVE;
 124         sdi->vendor = g_strdup(dmm->vendor);
 125         sdi->model = g_strdup(dmm->device);
 126         devc = g_malloc0(sizeof(struct dev_context));
 127         sr_sw_limits_init(&devc->limits);
 128         sdi->inst_type = SR_INST_SERIAL;
 129         sdi->conn = serial;
 130         sdi->priv = devc;
 131         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
 132         devices = g_slist_append(devices, sdi);
 133
 134 scan_cleanup:
 135         serial_close(serial);
 136
 137         return std_scan_complete(di, devices);
 138 }
 139
 140 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 141                 const struct sr_channel_group *cg)
 142 {
 143         struct dev_context *devc;
 144
 145         (void)cg;
 146
 147         if (sdi->status != SR_ST_ACTIVE)
 148                 return SR_ERR_DEV_CLOSED;
 149
 150         devc = sdi->priv;
 151
 152         return sr_sw_limits_config_set(&devc->limits, key, data);
 153 }
 154
 155 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 156                 const struct sr_channel_group *cg)
 157 {
 158         (void)sdi;
 159         (void)cg;
 160
 161         switch (key) {
 162         case SR_CONF_SCAN_OPTIONS:
 163                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 164                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 165                 break;
 166         case SR_CONF_DEVICE_OPTIONS:
 167                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 168                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 169                 break;
 170         default:
 171                 return SR_ERR_NA;
 172         }
 173
 174         return SR_OK;
 175 }
 176
 177 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 178 {
 179         struct dev_context *devc;
 180         struct sr_serial_dev_inst *serial;
 181
 182         if (sdi->status != SR_ST_ACTIVE)
 183                 return SR_ERR_DEV_CLOSED;
 184
 185         devc = sdi->priv;
 186
 187         sr_sw_limits_acquisition_start(&devc->limits);
 188         std_session_send_df_header(sdi, LOG_PREFIX);
 189
 190         /* Poll every 50ms, or whenever some data comes in. */
 191         serial = sdi->conn;
 192         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 193                       receive_data, (void *)sdi);
 194
 195         return SR_OK;
 196 }
 197
 198 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 199 {
 200         return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
 201                         sdi->conn, LOG_PREFIX);
 202 }
 203
 204 #define DMM(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, \
 205                         DELAY, REQUEST, VALID, PARSE, DETAILS) \
 206         &((struct dmm_info) { \
 207                 { \
 208                         .name = ID, \
 209                         .longname = VENDOR " " MODEL, \
 210                         .api_version = 1, \
 211                         .init = std_init, \
 212                         .cleanup = std_cleanup, \
 213                         .scan = scan, \
 214                         .dev_list = std_dev_list, \
 215                         .config_get = NULL, \
 216                         .config_set = config_set, \
 217                         .config_list = config_list, \
 218                         .dev_open = std_serial_dev_open, \
 219                         .dev_close = std_serial_dev_close, \
 220                         .dev_acquisition_start = dev_acquisition_start, \
 221                         .dev_acquisition_stop = dev_acquisition_stop, \
 222                         .context = NULL, \
 223                 }, \
 224                 VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, DELAY, \
 225                 REQUEST, VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
 226         }).di
 227
 228 SR_REGISTER_DEV_DRIVER_LIST(serial_dmm_drivers,
 229         DMM(
 230                 "bbcgm-2010", metex14,
 231                 "BBC Goertz Metrawatt", "M2110", "1200/7n2", 1200,
 232                 BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
 233                 sr_m2110_packet_valid, sr_m2110_parse,
 234                 NULL
 235         ),
 236         DMM(
 237                 "digitek-dt4000zc", fs9721,
 238                 "Digitek", "DT4000ZC", "2400/8n1/dtr=1", 2400,
 239                 FS9721_PACKET_SIZE, 0, 0, NULL,
 240                 sr_fs9721_packet_valid, sr_fs9721_parse,
 241                 sr_fs9721_10_temp_c
 242         ),
 243         DMM(
 244                 "tekpower-tp4000ZC", fs9721,
 245                 "TekPower", "TP4000ZC", "2400/8n1/dtr=1", 2400,
 246                 FS9721_PACKET_SIZE, 0, 0, NULL,
 247                 sr_fs9721_packet_valid, sr_fs9721_parse,
 248                 sr_fs9721_10_temp_c
 249         ),
 250         DMM(
 251                 "metex-me31", metex14,
 252                 "Metex", "ME-31", "600/7n2/rts=0/dtr=1", 600,
 253                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 254                 sr_metex14_packet_valid, sr_metex14_parse,
 255                 NULL
 256         ),
 257         DMM(
 258                 "peaktech-3410", metex14,
 259                 "Peaktech", "3410", "600/7n2/rts=0/dtr=1", 600,
 260                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 261                 sr_metex14_packet_valid, sr_metex14_parse,
 262                 NULL
 263         ),
 264         DMM(
 265                 "mastech-mas345", metex14,
 266                 "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1", 600,
 267                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 268                 sr_metex14_packet_valid, sr_metex14_parse,
 269                 NULL
 270         ),
 271         DMM(
 272                 "mastech-ms8250b", fs9721,
 273                 "MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
 274                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 275                 sr_fs9721_packet_valid, sr_fs9721_parse,
 276                 NULL
 277         ),
 278         DMM(
 279                 "va-va18b", fs9721,
 280                 "V&A", "VA18B", "2400/8n1", 2400,
 281                 FS9721_PACKET_SIZE, 0, 0, NULL,
 282                 sr_fs9721_packet_valid, sr_fs9721_parse,
 283                 sr_fs9721_01_temp_c
 284         ),
 285         DMM(
 286                 "va-va40b", fs9721,
 287                 "V&A", "VA40B", "2400/8n1", 2400,
 288                 FS9721_PACKET_SIZE, 0, 0, NULL,
 289                 sr_fs9721_packet_valid, sr_fs9721_parse,
 290                 sr_fs9721_max_c_min
 291         ),
 292         DMM(
 293                 "metex-m3640d", metex14,
 294                 "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1", 1200,
 295                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 296                 sr_metex14_packet_valid, sr_metex14_parse,
 297                 NULL
 298         ),
 299         DMM(
 300                 "metex-m4650cr", metex14,
 301                 "Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 302                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 303                 sr_metex14_packet_valid, sr_metex14_parse,
 304                 NULL
 305         ),
 306         DMM(
 307                 "peaktech-4370", metex14,
 308                 "PeakTech", "4370", "1200/7n2/rts=0/dtr=1", 1200,
 309                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 310                 sr_metex14_packet_valid, sr_metex14_parse,
 311                 NULL
 312         ),
 313         DMM(
 314                 "pce-pce-dm32", fs9721,
 315                 "PCE", "PCE-DM32", "2400/8n1", 2400,
 316                 FS9721_PACKET_SIZE, 0, 0, NULL,
 317                 sr_fs9721_packet_valid, sr_fs9721_parse,
 318                 sr_fs9721_01_10_temp_f_c
 319         ),
 320         DMM(
 321                 "radioshack-22-168", metex14,
 322                 "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1", 1200,
 323                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 324                 sr_metex14_packet_valid, sr_metex14_parse,
 325                 NULL
 326         ),
 327         DMM(
 328                 "radioshack-22-805", metex14,
 329                 "RadioShack", "22-805", "600/7n2/rts=0/dtr=1", 600,
 330                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 331                 sr_metex14_packet_valid, sr_metex14_parse,
 332                 NULL
 333         ),
 334         DMM(
 335                 "radioshack-22-812", rs9lcd,
 336                 "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1", 4800,
 337                 RS9LCD_PACKET_SIZE, 0, 0, NULL,
 338                 sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
 339                 NULL
 340         ),
 341         DMM(
 342                 "tecpel-dmm-8061-ser", fs9721,
 343                 "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 344                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 345                 sr_fs9721_packet_valid, sr_fs9721_parse,
 346                 sr_fs9721_00_temp_c
 347         ),
 348         DMM(
 349                 "voltcraft-m3650cr", metex14,
 350                 "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1", 1200,
 351                 METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
 352                 sr_metex14_packet_valid, sr_metex14_parse,
 353                 NULL
 354         ),
 355         DMM(
 356                 "voltcraft-m3650d", metex14,
 357                 "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1", 1200,
 358                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 359                 sr_metex14_packet_valid, sr_metex14_parse,
 360                 NULL
 361         ),
 362         DMM(
 363                 "voltcraft-m4650cr", metex14,
 364                 "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 365                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 366                 sr_metex14_packet_valid, sr_metex14_parse,
 367                 NULL
 368         ),
 369         DMM(
 370                 "voltcraft-me42", metex14,
 371                 "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1", 600,
 372                 METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
 373                 sr_metex14_packet_valid, sr_metex14_parse,
 374                 NULL
 375         ),
 376         DMM(
 377                 "voltcraft-vc820-ser", fs9721,
 378                 "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 379                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 380                 sr_fs9721_packet_valid, sr_fs9721_parse,
 381                 NULL
 382         ),
 383         DMM(
 384                 /*
 385                  * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
 386                  * the FS9922 protocol. Instead, it only sets the user-defined
 387                  * bit "z1" to indicate "diode mode" and "voltage".
 388                  */
 389                 "voltcraft-vc830-ser", fs9922,
 390                 "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 391                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 392                 sr_fs9922_packet_valid, sr_fs9922_parse,
 393                 &sr_fs9922_z1_diode
 394         ),
 395         DMM(
 396                 "voltcraft-vc840-ser", fs9721,
 397                 "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 398                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 399                 sr_fs9721_packet_valid, sr_fs9721_parse,
 400                 sr_fs9721_00_temp_c
 401         ),
 402         DMM(
 403                 "voltcraft-vc870-ser", vc870,
 404                 "Voltcraft", "VC-870 (UT-D02 cable)", "9600/8n1/rts=0/dtr=1",
 405                 9600, VC870_PACKET_SIZE, 0, 0, NULL,
 406                 sr_vc870_packet_valid, sr_vc870_parse, NULL
 407         ),
 408         DMM(
 409                 "voltcraft-vc920-ser", ut71x,
 410                 "Voltcraft", "VC-920 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 411                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 412                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 413         ),
 414         DMM(
 415                 "voltcraft-vc940-ser", ut71x,
 416                 "Voltcraft", "VC-940 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 417                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 418                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 419         ),
 420         DMM(
 421                 "voltcraft-vc960-ser", ut71x,
 422                 "Voltcraft", "VC-960 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 423                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 424                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 425         ),
 426         DMM(
 427                 "uni-t-ut60a-ser", fs9721,
 428                 "UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 429                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 430                 sr_fs9721_packet_valid, sr_fs9721_parse,
 431                 NULL
 432         ),
 433         DMM(
 434                 "uni-t-ut60e-ser", fs9721,
 435                 "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 436                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 437                 sr_fs9721_packet_valid, sr_fs9721_parse,
 438                 sr_fs9721_00_temp_c
 439         ),
 440         DMM(
 441                 /* Note: ES51986 baudrate is actually 19230! */
 442                 "uni-t-ut60g-ser", es519xx,
 443                 "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 444                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 445                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 446                 NULL
 447         ),
 448         DMM(
 449                 "uni-t-ut61b-ser", fs9922,
 450                 "UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 451                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 452                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 453         ),
 454         DMM(
 455                 "uni-t-ut61c-ser", fs9922,
 456                 "UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 457                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 458                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 459         ),
 460         DMM(
 461                 "uni-t-ut61d-ser", fs9922,
 462                 "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 463                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 464                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 465         ),
 466         DMM(
 467                 "uni-t-ut61e-ser", es519xx,
 468                 /* Note: ES51922 baudrate is actually 19230! */
 469                 "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 470                 19200, ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
 471                 sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
 472                 NULL
 473         ),
 474         DMM(
 475                 "uni-t-ut71a-ser", ut71x,
 476                 "UNI-T", "UT71A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 477                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 478                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 479         ),
 480         DMM(
 481                 "uni-t-ut71b-ser", ut71x,
 482                 "UNI-T", "UT71B (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 483                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 484                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 485         ),
 486         DMM(
 487                 "uni-t-ut71c-ser", ut71x,
 488                 "UNI-T", "UT71C (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 489                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 490                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 491         ),
 492         DMM(
 493                 "uni-t-ut71d-ser", ut71x,
 494                 "UNI-T", "UT71D (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 495                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 496                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 497         ),
 498         DMM(
 499                 "uni-t-ut71e-ser", ut71x,
 500                 "UNI-T", "UT71E (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 501                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 502                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 503         ),
 504         DMM(
 505                 "iso-tech-idm103n", es519xx,
 506                 "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
 507                 2400, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 508                 sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
 509                 NULL
 510         ),
 511         DMM(
 512                 "tenma-72-7730-ser", ut71x,
 513                 "Tenma", "72-7730 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 514                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 515                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 516         ),
 517         DMM(
 518                 "tenma-72-7732-ser", ut71x,
 519                 "Tenma", "72-7732 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 520                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 521                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 522         ),
 523         DMM(
 524                 "tenma-72-9380a-ser", ut71x,
 525                 "Tenma", "72-9380A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 526                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 527                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 528         ),
 529         DMM(
 530                 "tenma-72-7745-ser", fs9721,
 531                 "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 532                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 533                 sr_fs9721_packet_valid, sr_fs9721_parse,
 534                 sr_fs9721_00_temp_c
 535         ),
 536         DMM(
 537                 "tenma-72-7750-ser", es519xx,
 538                 /* Note: ES51986 baudrate is actually 19230! */
 539                 "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 540                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 541                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 542                 NULL
 543         ),
 544         DMM(
 545                 "brymen-bm25x", bm25x,
 546                 "Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
 547                 9600, BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
 548                 sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
 549                 NULL
 550         ),
 551         DMM(
 552                 "velleman-dvm4100", dtm0660,
 553                 "Velleman", "DVM4100", "2400/8n1/rts=0/dtr=1",
 554                 2400, DTM0660_PACKET_SIZE, 0, 0, NULL,
 555                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 556         ),
 557         DMM(
 558                 "peaktech-3415", dtm0660,
 559                 "Peaktech", "3415", "2400/8n1/rts=0/dtr=1",
 560                 2400, DTM0660_PACKET_SIZE, 0, 0, NULL,
 561                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 562         ),
 563 );