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);
 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 #define DMM(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, \
 199                         DELAY, REQUEST, VALID, PARSE, DETAILS) \
 200         &((struct dmm_info) { \
 201                 { \
 202                         .name = ID, \
 203                         .longname = VENDOR " " MODEL, \
 204                         .api_version = 1, \
 205                         .init = std_init, \
 206                         .cleanup = std_cleanup, \
 207                         .scan = scan, \
 208                         .dev_list = std_dev_list, \
 209                         .config_get = NULL, \
 210                         .config_set = config_set, \
 211                         .config_list = config_list, \
 212                         .dev_open = std_serial_dev_open, \
 213                         .dev_close = std_serial_dev_close, \
 214                         .dev_acquisition_start = dev_acquisition_start, \
 215                         .dev_acquisition_stop = std_serial_dev_acquisition_stop, \
 216                         .context = NULL, \
 217                 }, \
 218                 VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, DELAY, \
 219                 REQUEST, VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
 220         }).di
 221
 222 SR_REGISTER_DEV_DRIVER_LIST(serial_dmm_drivers,
 223         /*
 224          * The items are sorted by chipset first and then model name.
 225          *
 226          * This reflects the developer's perspective and is preferrable
 227          * during maintenance, as a vendor/product based sort order does
 228          * not work well for rebranded models, and from a support point
 229          * of view it's more important to identify similarities between
 230          * models and compatible devices.
 231          *
 232          * Fold marks {{{ }}} with matching braces were added, to further
 233          * speed up navigation in the long list.
 234          */
 235         /* asycii based meters {{{ */
 236         DMM(
 237                 "metrix-mx56c", asycii, "Metrix", "MX56C",
 238                 "2400/8n1", 2400, ASYCII_PACKET_SIZE, 0, 0, NULL,
 239                 sr_asycii_packet_valid, sr_asycii_parse, NULL
 240         ),
 241         /* }}} */
 242         /* bm25x based meters {{{ */
 243         DMM(
 244                 "brymen-bm25x", bm25x,
 245                 "Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
 246                 9600, BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
 247                 sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
 248                 NULL
 249         ),
 250         /* }}} */
 251         /* dtm0660 based meters {{{ */
 252         DMM(
 253                 "peaktech-3415", dtm0660,
 254                 "PeakTech", "3415", "2400/8n1/rts=0/dtr=1",
 255                 2400, DTM0660_PACKET_SIZE, 0, 0, NULL,
 256                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 257         ),
 258         DMM(
 259                 "velleman-dvm4100", dtm0660,
 260                 "Velleman", "DVM4100", "2400/8n1/rts=0/dtr=1",
 261                 2400, DTM0660_PACKET_SIZE, 0, 0, NULL,
 262                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 263         ),
 264         /* }}} */
 265         /* es519xx based meters {{{ */
 266         DMM(
 267                 "iso-tech-idm103n", es519xx,
 268                 "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
 269                 2400, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 270                 sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
 271                 NULL
 272         ),
 273         /*
 274          * Note: ES51922 and ES51986 baudrate is actually 19230. This is
 275          * "out" by .15%, and so is well within the typical 1% margin
 276          * that is considered acceptable in UART communication, and thus
 277          * should not cause an issue.
 278          *
 279          * However, using 19230 as baudrate here will not work, as most DMM
 280          * cables do not support that baudrate!
 281          */
 282         DMM(
 283                 "tenma-72-7750-ser", es519xx,
 284                 "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 285                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 286                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 287                 NULL
 288         ),
 289         DMM(
 290                 "uni-t-ut60g-ser", es519xx,
 291                 "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 292                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 293                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 294                 NULL
 295         ),
 296         DMM(
 297                 "uni-t-ut61e-ser", es519xx,
 298                 "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 299                 19200, ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
 300                 sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
 301                 NULL
 302         ),
 303         /* }}} */
 304         /* fs9721 based meters {{{ */
 305         DMM(
 306                 "digitek-dt4000zc", fs9721,
 307                 "Digitek", "DT4000ZC", "2400/8n1/dtr=1", 2400,
 308                 FS9721_PACKET_SIZE, 0, 0, NULL,
 309                 sr_fs9721_packet_valid, sr_fs9721_parse,
 310                 sr_fs9721_10_temp_c
 311         ),
 312         DMM(
 313                 "mastech-ms8250b", fs9721,
 314                 "MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
 315                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 316                 sr_fs9721_packet_valid, sr_fs9721_parse,
 317                 NULL
 318         ),
 319         DMM(
 320                 "pce-pce-dm32", fs9721,
 321                 "PCE", "PCE-DM32", "2400/8n1", 2400,
 322                 FS9721_PACKET_SIZE, 0, 0, NULL,
 323                 sr_fs9721_packet_valid, sr_fs9721_parse,
 324                 sr_fs9721_01_10_temp_f_c
 325         ),
 326         DMM(
 327                 "peaktech-3330", fs9721,
 328                 "PeakTech", "3330", "2400/8n1/dtr=1", 2400,
 329                 FS9721_PACKET_SIZE, 0, 0, NULL,
 330                 sr_fs9721_packet_valid, sr_fs9721_parse,
 331                 sr_fs9721_01_10_temp_f_c
 332         ),
 333         DMM(
 334                 "tecpel-dmm-8061-ser", fs9721,
 335                 "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 336                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 337                 sr_fs9721_packet_valid, sr_fs9721_parse,
 338                 sr_fs9721_00_temp_c
 339         ),
 340         DMM(
 341                 "tekpower-tp4000ZC", fs9721,
 342                 "TekPower", "TP4000ZC", "2400/8n1/dtr=1", 2400,
 343                 FS9721_PACKET_SIZE, 0, 0, NULL,
 344                 sr_fs9721_packet_valid, sr_fs9721_parse,
 345                 sr_fs9721_10_temp_c
 346         ),
 347         DMM(
 348                 "tenma-72-7745-ser", fs9721,
 349                 "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 350                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 351                 sr_fs9721_packet_valid, sr_fs9721_parse,
 352                 sr_fs9721_00_temp_c
 353         ),
 354         DMM(
 355                 "uni-t-ut60a-ser", fs9721,
 356                 "UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 357                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 358                 sr_fs9721_packet_valid, sr_fs9721_parse,
 359                 NULL
 360         ),
 361         DMM(
 362                 "uni-t-ut60e-ser", fs9721,
 363                 "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 364                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 365                 sr_fs9721_packet_valid, sr_fs9721_parse,
 366                 sr_fs9721_00_temp_c
 367         ),
 368         DMM(
 369                 "va-va18b", fs9721,
 370                 "V&A", "VA18B", "2400/8n1", 2400,
 371                 FS9721_PACKET_SIZE, 0, 0, NULL,
 372                 sr_fs9721_packet_valid, sr_fs9721_parse,
 373                 sr_fs9721_01_temp_c
 374         ),
 375         DMM(
 376                 "va-va40b", fs9721,
 377                 "V&A", "VA40B", "2400/8n1", 2400,
 378                 FS9721_PACKET_SIZE, 0, 0, NULL,
 379                 sr_fs9721_packet_valid, sr_fs9721_parse,
 380                 sr_fs9721_max_c_min
 381         ),
 382         DMM(
 383                 "voltcraft-vc820-ser", fs9721,
 384                 "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 385                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 386                 sr_fs9721_packet_valid, sr_fs9721_parse,
 387                 NULL
 388         ),
 389         DMM(
 390                 "voltcraft-vc840-ser", fs9721,
 391                 "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 392                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 393                 sr_fs9721_packet_valid, sr_fs9721_parse,
 394                 sr_fs9721_00_temp_c
 395         ),
 396         /* }}} */
 397         /* fs9922 based meters {{{ */
 398         DMM(
 399                 "sparkfun-70c", fs9922,
 400                 "SparkFun", "70C", "2400/8n1/rts=0/dtr=1",
 401                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 402                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 403         ),
 404         DMM(
 405                 "uni-t-ut61b-ser", fs9922,
 406                 "UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 407                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 408                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 409         ),
 410         DMM(
 411                 "uni-t-ut61c-ser", fs9922,
 412                 "UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 413                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 414                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 415         ),
 416         DMM(
 417                 "uni-t-ut61d-ser", fs9922,
 418                 "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 419                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 420                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 421         ),
 422         DMM(
 423                 /*
 424                  * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
 425                  * the FS9922 protocol. Instead, it only sets the user-defined
 426                  * bit "z1" to indicate "diode mode" and "voltage".
 427                  */
 428                 "voltcraft-vc830-ser", fs9922,
 429                 "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 430                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 431                 sr_fs9922_packet_valid, sr_fs9922_parse,
 432                 &sr_fs9922_z1_diode
 433         ),
 434         /* }}} */
 435         /* m2110 based meters {{{ */
 436         DMM(
 437                 "bbcgm-2010", m2110,
 438                 "BBC Goertz Metrawatt", "M2110", "1200/7n2", 1200,
 439                 BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
 440                 sr_m2110_packet_valid, sr_m2110_parse,
 441                 NULL
 442         ),
 443         /* }}} */
 444         /* metex14 based meters {{{ */
 445         DMM(
 446                 "mastech-mas345", metex14,
 447                 "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1", 600,
 448                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 449                 sr_metex14_packet_valid, sr_metex14_parse,
 450                 NULL
 451         ),
 452         DMM(
 453                 "metex-m3640d", metex14,
 454                 "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1", 1200,
 455                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 456                 sr_metex14_packet_valid, sr_metex14_parse,
 457                 NULL
 458         ),
 459         DMM(
 460                 "metex-m4650cr", metex14,
 461                 "Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 462                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 463                 sr_metex14_packet_valid, sr_metex14_parse,
 464                 NULL
 465         ),
 466         DMM(
 467                 "metex-me31", metex14,
 468                 "Metex", "ME-31", "600/7n2/rts=0/dtr=1", 600,
 469                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 470                 sr_metex14_packet_valid, sr_metex14_parse,
 471                 NULL
 472         ),
 473         DMM(
 474                 "peaktech-3410", metex14,
 475                 "PeakTech", "3410", "600/7n2/rts=0/dtr=1", 600,
 476                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 477                 sr_metex14_packet_valid, sr_metex14_parse,
 478                 NULL
 479         ),
 480         DMM(
 481                 "peaktech-4370", metex14,
 482                 "PeakTech", "4370", "1200/7n2/rts=0/dtr=1", 1200,
 483                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 484                 sr_metex14_packet_valid, sr_metex14_parse,
 485                 NULL
 486         ),
 487         DMM(
 488                 "radioshack-22-168", metex14,
 489                 "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1", 1200,
 490                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 491                 sr_metex14_packet_valid, sr_metex14_parse,
 492                 NULL
 493         ),
 494         DMM(
 495                 "radioshack-22-805", metex14,
 496                 "RadioShack", "22-805", "600/7n2/rts=0/dtr=1", 600,
 497                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 498                 sr_metex14_packet_valid, sr_metex14_parse,
 499                 NULL
 500         ),
 501         DMM(
 502                 "voltcraft-m3650cr", metex14,
 503                 "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1", 1200,
 504                 METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
 505                 sr_metex14_packet_valid, sr_metex14_parse,
 506                 NULL
 507         ),
 508         DMM(
 509                 "voltcraft-m3650d", metex14,
 510                 "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1", 1200,
 511                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 512                 sr_metex14_packet_valid, sr_metex14_parse,
 513                 NULL
 514         ),
 515         DMM(
 516                 "voltcraft-m4650cr", metex14,
 517                 "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 518                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 519                 sr_metex14_packet_valid, sr_metex14_parse,
 520                 NULL
 521         ),
 522         DMM(
 523                 "voltcraft-me42", metex14,
 524                 "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1", 600,
 525                 METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
 526                 sr_metex14_packet_valid, sr_metex14_parse,
 527                 NULL
 528         ),
 529         /* }}} */
 530         /* rs9lcd based meters {{{ */
 531         DMM(
 532                 "radioshack-22-812", rs9lcd,
 533                 "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1", 4800,
 534                 RS9LCD_PACKET_SIZE, 0, 0, NULL,
 535                 sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
 536                 NULL
 537         ),
 538         /* }}} */
 539         /* ut71x based meters {{{ */
 540         DMM(
 541                 "tenma-72-7730-ser", ut71x,
 542                 "Tenma", "72-7730 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 543                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 544                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 545         ),
 546         DMM(
 547                 "tenma-72-7732-ser", ut71x,
 548                 "Tenma", "72-7732 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 549                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 550                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 551         ),
 552         DMM(
 553                 "tenma-72-9380a-ser", ut71x,
 554                 "Tenma", "72-9380A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 555                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 556                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 557         ),
 558         DMM(
 559                 "uni-t-ut71a-ser", ut71x,
 560                 "UNI-T", "UT71A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 561                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 562                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 563         ),
 564         DMM(
 565                 "uni-t-ut71b-ser", ut71x,
 566                 "UNI-T", "UT71B (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 567                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 568                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 569         ),
 570         DMM(
 571                 "uni-t-ut71c-ser", ut71x,
 572                 "UNI-T", "UT71C (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 573                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 574                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 575         ),
 576         DMM(
 577                 "uni-t-ut71d-ser", ut71x,
 578                 "UNI-T", "UT71D (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 579                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 580                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 581         ),
 582         DMM(
 583                 "uni-t-ut71e-ser", ut71x,
 584                 "UNI-T", "UT71E (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 585                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 586                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 587         ),
 588         DMM(
 589                 "voltcraft-vc920-ser", ut71x,
 590                 "Voltcraft", "VC-920 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 591                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 592                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 593         ),
 594         DMM(
 595                 "voltcraft-vc940-ser", ut71x,
 596                 "Voltcraft", "VC-940 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 597                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 598                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 599         ),
 600         DMM(
 601                 "voltcraft-vc960-ser", ut71x,
 602                 "Voltcraft", "VC-960 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 603                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 604                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 605         ),
 606         /* }}} */
 607         /* vc870 based meters {{{ */
 608         DMM(
 609                 "voltcraft-vc870-ser", vc870,
 610                 "Voltcraft", "VC-870 (UT-D02 cable)", "9600/8n1/rts=0/dtr=1",
 611                 9600, VC870_PACKET_SIZE, 0, 0, NULL,
 612                 sr_vc870_packet_valid, sr_vc870_parse, NULL
 613         ),
 614         /* }}} */
 615         /*
 616          * The list is sorted. Add new items in the respective chip's group.
 617          */
 618 );