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 drvopts[] = {
  38         SR_CONF_MULTIMETER,
  39 };
  40
  41 static const uint32_t devopts[] = {
  42         SR_CONF_CONTINUOUS,
  43         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  44         SR_CONF_LIMIT_MSEC | SR_CONF_SET,
  45 };
  46
  47 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  48 {
  49         struct dmm_info *dmm;
  50         struct sr_config *src;
  51         GSList *l, *devices;
  52         const char *conn, *serialcomm;
  53         struct sr_dev_inst *sdi;
  54         struct dev_context *devc;
  55         struct sr_serial_dev_inst *serial;
  56         int dropped, ret;
  57         size_t len;
  58         uint8_t buf[128];
  59         size_t ch_idx;
  60         char ch_name[12];
  61
  62         dmm = (struct dmm_info *)di;
  63
  64         conn = dmm->conn;
  65         serialcomm = dmm->serialcomm;
  66         for (l = options; l; l = l->next) {
  67                 src = l->data;
  68                 switch (src->key) {
  69                 case SR_CONF_CONN:
  70                         conn = g_variant_get_string(src->data, NULL);
  71                         break;
  72                 case SR_CONF_SERIALCOMM:
  73                         serialcomm = g_variant_get_string(src->data, NULL);
  74                         break;
  75                 }
  76         }
  77         if (!conn)
  78                 return NULL;
  79
  80         serial = sr_serial_dev_inst_new(conn, serialcomm);
  81
  82         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  83                 return NULL;
  84
  85         sr_info("Probing serial port %s.", conn);
  86
  87         devices = NULL;
  88
  89         /* Request a packet if the DMM requires this. */
  90         if (dmm->packet_request) {
  91                 if ((ret = dmm->packet_request(serial)) < 0) {
  92                         sr_err("Failed to request packet: %d.", ret);
  93                         return FALSE;
  94                 }
  95         }
  96
  97         /*
  98          * There's no way to get an ID from the multimeter. It just sends data
  99          * periodically (or upon request), so the best we can do is check if
 100          * the packets match the expected format.
 101          */
 102
 103         /* Let's get a bit of data and see if we can find a packet. */
 104         len = sizeof(buf);
 105         ret = serial_stream_detect(serial, buf, &len, dmm->packet_size,
 106                                    dmm->packet_valid, NULL, NULL, 3000);
 107         if (ret != SR_OK)
 108                 goto scan_cleanup;
 109
 110         /*
 111          * If we dropped more than two packets worth of data, something is
 112          * wrong. We shouldn't quit however, since the dropped bytes might be
 113          * just zeroes at the beginning of the stream. Those can occur as a
 114          * combination of the nonstandard cable that ships with some devices
 115          * and the serial port or USB to serial adapter.
 116          */
 117         dropped = len - dmm->packet_size;
 118         if (dropped > 2 * dmm->packet_size)
 119                 sr_warn("Had to drop too much data.");
 120
 121         sr_info("Found device on port %s.", conn);
 122
 123         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 124         sdi->status = SR_ST_INACTIVE;
 125         sdi->vendor = g_strdup(dmm->vendor);
 126         sdi->model = g_strdup(dmm->device);
 127         devc = g_malloc0(sizeof(struct dev_context));
 128         sr_sw_limits_init(&devc->limits);
 129         sdi->inst_type = SR_INST_SERIAL;
 130         sdi->conn = serial;
 131         sdi->priv = devc;
 132         dmm->channel_count = 1;
 133         if (dmm->packet_parse == sr_brymen_bm52x_parse)
 134                 dmm->channel_count = BRYMEN_BM52X_DISPLAY_COUNT;
 135         if (dmm->packet_parse == sr_brymen_bm86x_parse)
 136                 dmm->channel_count = BRYMEN_BM86X_DISPLAY_COUNT;
 137         if (dmm->packet_parse == sr_eev121gw_3displays_parse) {
 138                 dmm->channel_count = EEV121GW_DISPLAY_COUNT;
 139                 dmm->channel_formats = eev121gw_channel_formats;
 140         }
 141         if (dmm->packet_parse == sr_metex14_4packets_parse)
 142                 dmm->channel_count = 4;
 143         if (dmm->packet_parse == sr_ms2115b_parse) {
 144                 dmm->channel_count = MS2115B_DISPLAY_COUNT;
 145                 dmm->channel_formats = ms2115b_channel_formats;
 146         }
 147         for (ch_idx = 0; ch_idx < dmm->channel_count; ch_idx++) {
 148                 size_t ch_num;
 149                 const char *fmt;
 150                 fmt = "P%zu";
 151                 if (dmm->channel_formats && dmm->channel_formats[ch_idx])
 152                         fmt = dmm->channel_formats[ch_idx];
 153                 ch_num = ch_idx + 1;
 154                 snprintf(ch_name, sizeof(ch_name), fmt, ch_num);
 155                 sr_channel_new(sdi, ch_idx, SR_CHANNEL_ANALOG, TRUE, ch_name);
 156         }
 157         devices = g_slist_append(devices, sdi);
 158
 159 scan_cleanup:
 160         serial_close(serial);
 161
 162         return std_scan_complete(di, devices);
 163 }
 164
 165 static int config_set(uint32_t key, GVariant *data,
 166         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 167 {
 168         struct dev_context *devc;
 169
 170         (void)cg;
 171
 172         devc = sdi->priv;
 173
 174         return sr_sw_limits_config_set(&devc->limits, key, data);
 175 }
 176
 177 static int config_list(uint32_t key, GVariant **data,
 178         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 179 {
 180         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 181 }
 182
 183 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 184 {
 185         struct dev_context *devc;
 186         struct sr_serial_dev_inst *serial;
 187
 188         devc = sdi->priv;
 189
 190         sr_sw_limits_acquisition_start(&devc->limits);
 191         std_session_send_df_header(sdi);
 192
 193         serial = sdi->conn;
 194         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 195                       receive_data, (void *)sdi);
 196
 197         return SR_OK;
 198 }
 199
 200 #define DMM_CONN(ID, CHIPSET, VENDOR, MODEL, \
 201                 CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 202                 REQUEST, VALID, PARSE, DETAILS) \
 203         &((struct dmm_info) { \
 204                 { \
 205                         .name = ID, \
 206                         .longname = VENDOR " " MODEL, \
 207                         .api_version = 1, \
 208                         .init = std_init, \
 209                         .cleanup = std_cleanup, \
 210                         .scan = scan, \
 211                         .dev_list = std_dev_list, \
 212                         .dev_clear = std_dev_clear, \
 213                         .config_get = NULL, \
 214                         .config_set = config_set, \
 215                         .config_list = config_list, \
 216                         .dev_open = std_serial_dev_open, \
 217                         .dev_close = std_serial_dev_close, \
 218                         .dev_acquisition_start = dev_acquisition_start, \
 219                         .dev_acquisition_stop = std_serial_dev_acquisition_stop, \
 220                         .context = NULL, \
 221                 }, \
 222                 VENDOR, MODEL, CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 223                 REQUEST, 1, NULL, VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
 224         }).di
 225
 226 #define DMM(ID, CHIPSET, VENDOR, MODEL, SERIALCOMM, PACKETSIZE, TIMEOUT, \
 227                 DELAY, REQUEST, VALID, PARSE, DETAILS) \
 228         DMM_CONN(ID, CHIPSET, VENDOR, MODEL, NULL, SERIALCOMM, PACKETSIZE, \
 229                 TIMEOUT, DELAY, REQUEST, VALID, PARSE, DETAILS)
 230
 231 SR_REGISTER_DEV_DRIVER_LIST(serial_dmm_drivers,
 232         /*
 233          * The items are sorted by chipset first and then model name.
 234          *
 235          * This reflects the developer's perspective and is preferrable
 236          * during maintenance, as a vendor/product based sort order does
 237          * not work well for rebranded models, and from a support point
 238          * of view it's more important to identify similarities between
 239          * models and compatible devices.
 240          *
 241          * Fold marks {{{ }}} with matching braces were added, to further
 242          * speed up navigation in the long list.
 243          */
 244         /* asycii based meters {{{ */
 245         DMM(
 246                 "metrix-mx56c", asycii, "Metrix", "MX56C",
 247                 "2400/8n1", ASYCII_PACKET_SIZE, 0, 0, NULL,
 248                 sr_asycii_packet_valid, sr_asycii_parse, NULL
 249         ),
 250         /* }}} */
 251         /* bm25x based meters {{{ */
 252         DMM(
 253                 "brymen-bm25x", bm25x,
 254                 "Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
 255                 BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
 256                 sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
 257                 NULL
 258         ),
 259         /* }}} */
 260         /* bm52x based meters {{{ */
 261         DMM_CONN(
 262                 "brymen-bm52x", brymen_bm52x, "Brymen", "BM52x",
 263                 "hid/bu86x", NULL, BRYMEN_BM52X_PACKET_SIZE, 4000, 500,
 264                 sr_brymen_bm52x_packet_request,
 265                 sr_brymen_bm52x_packet_valid, sr_brymen_bm52x_parse,
 266                 NULL
 267         ),
 268         /* }}} */
 269         /* bm86x based meters {{{ */
 270         DMM_CONN(
 271                 "brymen-bm86x", brymen_bm86x, "Brymen", "BM86x",
 272                 "hid/bu86x", NULL, BRYMEN_BM86X_PACKET_SIZE, 500, 100,
 273                 sr_brymen_bm86x_packet_request,
 274                 sr_brymen_bm86x_packet_valid, sr_brymen_bm86x_parse,
 275                 NULL
 276         ),
 277         /* }}} */
 278         /* dtm0660 based meters {{{ */
 279         DMM(
 280                 "peaktech-3415", dtm0660,
 281                 "PeakTech", "3415", "2400/8n1/rts=0/dtr=1",
 282                 DTM0660_PACKET_SIZE, 0, 0, NULL,
 283                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 284         ),
 285         DMM(
 286                 "velleman-dvm4100", dtm0660,
 287                 "Velleman", "DVM4100", "2400/8n1/rts=0/dtr=1",
 288                 DTM0660_PACKET_SIZE, 0, 0, NULL,
 289                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 290         ),
 291         /* }}} */
 292         /* eev121gw based meters {{{ */
 293         DMM(
 294                 "eevblog-121gw", eev121gw, "EEVblog", "121GW",
 295                 "115200/8n1", EEV121GW_PACKET_SIZE, 0, 0, NULL,
 296                 sr_eev121gw_packet_valid, sr_eev121gw_3displays_parse, NULL
 297         ),
 298         /* }}} */
 299         /* es519xx based meters {{{ */
 300         DMM(
 301                 "iso-tech-idm103n", es519xx,
 302                 "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
 303                 ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 304                 sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
 305                 NULL
 306         ),
 307         /*
 308          * Note: ES51922 and ES51986 baudrate is actually 19230. This is
 309          * "out" by .15%, and so is well within the typical 1% margin
 310          * that is considered acceptable in UART communication, and thus
 311          * should not cause an issue.
 312          *
 313          * However, using 19230 as baudrate here will not work, as most DMM
 314          * cables do not support that baudrate!
 315          */
 316         DMM(
 317                 "tenma-72-7750-ser", es519xx,
 318                 "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 319                 ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 320                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 321                 NULL
 322         ),
 323         DMM(
 324                 "uni-t-ut60g-ser", es519xx,
 325                 "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 326                 ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 327                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 328                 NULL
 329         ),
 330         DMM(
 331                 "uni-t-ut61e-ser", es519xx,
 332                 "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 333                 ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
 334                 sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
 335                 NULL
 336         ),
 337         /* }}} */
 338         /* fs9721 based meters {{{ */
 339         DMM(
 340                 "digitek-dt4000zc", fs9721,
 341                 "Digitek", "DT4000ZC", "2400/8n1/dtr=1",
 342                 FS9721_PACKET_SIZE, 0, 0, NULL,
 343                 sr_fs9721_packet_valid, sr_fs9721_parse,
 344                 sr_fs9721_10_temp_c
 345         ),
 346         DMM(
 347                 "mastech-ms8250b", fs9721,
 348                 "MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
 349                 FS9721_PACKET_SIZE, 0, 0, NULL,
 350                 sr_fs9721_packet_valid, sr_fs9721_parse,
 351                 NULL
 352         ),
 353         DMM(
 354                 "pce-pce-dm32", fs9721,
 355                 "PCE", "PCE-DM32", "2400/8n1",
 356                 FS9721_PACKET_SIZE, 0, 0, NULL,
 357                 sr_fs9721_packet_valid, sr_fs9721_parse,
 358                 sr_fs9721_01_10_temp_f_c
 359         ),
 360         DMM(
 361                 "peaktech-3330", fs9721,
 362                 "PeakTech", "3330", "2400/8n1/dtr=1",
 363                 FS9721_PACKET_SIZE, 0, 0, NULL,
 364                 sr_fs9721_packet_valid, sr_fs9721_parse,
 365                 sr_fs9721_01_10_temp_f_c
 366         ),
 367         DMM(
 368                 "tecpel-dmm-8061-ser", fs9721,
 369                 "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 370                 FS9721_PACKET_SIZE, 0, 0, NULL,
 371                 sr_fs9721_packet_valid, sr_fs9721_parse,
 372                 sr_fs9721_00_temp_c
 373         ),
 374         DMM(
 375                 "tekpower-tp4000ZC", fs9721,
 376                 "TekPower", "TP4000ZC", "2400/8n1/dtr=1",
 377                 FS9721_PACKET_SIZE, 0, 0, NULL,
 378                 sr_fs9721_packet_valid, sr_fs9721_parse,
 379                 sr_fs9721_10_temp_c
 380         ),
 381         DMM(
 382                 "tenma-72-7745-ser", fs9721,
 383                 "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 384                 FS9721_PACKET_SIZE, 0, 0, NULL,
 385                 sr_fs9721_packet_valid, sr_fs9721_parse,
 386                 sr_fs9721_00_temp_c
 387         ),
 388         DMM(
 389                 "uni-t-ut60a-ser", fs9721,
 390                 "UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 391                 FS9721_PACKET_SIZE, 0, 0, NULL,
 392                 sr_fs9721_packet_valid, sr_fs9721_parse,
 393                 NULL
 394         ),
 395         DMM(
 396                 "uni-t-ut60e-ser", fs9721,
 397                 "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 398                 FS9721_PACKET_SIZE, 0, 0, NULL,
 399                 sr_fs9721_packet_valid, sr_fs9721_parse,
 400                 sr_fs9721_00_temp_c
 401         ),
 402         DMM(
 403                 "va-va18b", fs9721,
 404                 "V&A", "VA18B", "2400/8n1",
 405                 FS9721_PACKET_SIZE, 0, 0, NULL,
 406                 sr_fs9721_packet_valid, sr_fs9721_parse,
 407                 sr_fs9721_01_temp_c
 408         ),
 409         DMM(
 410                 "va-va40b", fs9721,
 411                 "V&A", "VA40B", "2400/8n1",
 412                 FS9721_PACKET_SIZE, 0, 0, NULL,
 413                 sr_fs9721_packet_valid, sr_fs9721_parse,
 414                 sr_fs9721_max_c_min
 415         ),
 416         DMM(
 417                 "voltcraft-vc820-ser", fs9721,
 418                 "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 419                 FS9721_PACKET_SIZE, 0, 0, NULL,
 420                 sr_fs9721_packet_valid, sr_fs9721_parse,
 421                 NULL
 422         ),
 423         DMM(
 424                 "voltcraft-vc840-ser", fs9721,
 425                 "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 426                 FS9721_PACKET_SIZE, 0, 0, NULL,
 427                 sr_fs9721_packet_valid, sr_fs9721_parse,
 428                 sr_fs9721_00_temp_c
 429         ),
 430         /* }}} */
 431         /* fs9922 based meters {{{ */
 432         DMM(
 433                 "gwinstek-gdm-397", fs9922,
 434                 "GW Instek", "GDM-397", "2400/8n1/rts=0/dtr=1",
 435                 FS9922_PACKET_SIZE, 0, 0, NULL,
 436                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 437         ),
 438         DMM(
 439                 "sparkfun-70c", fs9922,
 440                 "SparkFun", "70C", "2400/8n1/rts=0/dtr=1",
 441                 FS9922_PACKET_SIZE, 0, 0, NULL,
 442                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 443         ),
 444         DMM(
 445                 "uni-t-ut61b-ser", fs9922,
 446                 "UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 447                 FS9922_PACKET_SIZE, 0, 0, NULL,
 448                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 449         ),
 450         DMM(
 451                 "uni-t-ut61c-ser", fs9922,
 452                 "UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 453                 FS9922_PACKET_SIZE, 0, 0, NULL,
 454                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 455         ),
 456         DMM(
 457                 "uni-t-ut61d-ser", fs9922,
 458                 "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 459                 FS9922_PACKET_SIZE, 0, 0, NULL,
 460                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 461         ),
 462         DMM_CONN(
 463                 "victor-dmm", fs9922, "Victor", "Victor DMMs",
 464                 "hid/victor", "2400/8n1", FS9922_PACKET_SIZE, 0, 0, NULL,
 465                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 466         ),
 467         DMM(
 468                 /*
 469                  * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
 470                  * the FS9922 protocol. Instead, it only sets the user-defined
 471                  * bit "z1" to indicate "diode mode" and "voltage".
 472                  */
 473                 "voltcraft-vc830-ser", fs9922,
 474                 "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 475                 FS9922_PACKET_SIZE, 0, 0, NULL,
 476                 sr_fs9922_packet_valid, sr_fs9922_parse,
 477                 &sr_fs9922_z1_diode
 478         ),
 479         /* }}} */
 480         /* m2110 based meters {{{ */
 481         DMM(
 482                 "bbcgm-2010", m2110,
 483                 "BBC Goertz Metrawatt", "M2110", "1200/7n2",
 484                 BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
 485                 sr_m2110_packet_valid, sr_m2110_parse,
 486                 NULL
 487         ),
 488         /* }}} */
 489         /* ms2115b based meters {{{ */
 490         DMM(
 491                 "mastech-ms2115b", ms2115b,
 492                 "MASTECH", "MS2115B", "1200/8n1",
 493                 MS2115B_PACKET_SIZE, 0, 0, NULL,
 494                 sr_ms2115b_packet_valid, sr_ms2115b_parse,
 495                 NULL
 496         ),
 497         /* }}} */
 498         /* ms8250d based meters {{{ */
 499         DMM(
 500                 "mastech-ms8250d", ms8250d,
 501                 "MASTECH", "MS8250D", "2400/8n1/rts=0/dtr=1",
 502                 MS8250D_PACKET_SIZE, 0, 0, NULL,
 503                 sr_ms8250d_packet_valid, sr_ms8250d_parse,
 504                 NULL
 505         ),
 506         /* }}} */
 507         /* metex14 based meters {{{ */
 508         DMM(
 509                 "mastech-mas345", metex14,
 510                 "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1",
 511                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 512                 sr_metex14_packet_valid, sr_metex14_parse,
 513                 NULL
 514         ),
 515         DMM(
 516                 "metex-m3640d", metex14,
 517                 "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1",
 518                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 519                 sr_metex14_packet_valid, sr_metex14_parse,
 520                 NULL
 521         ),
 522         DMM(
 523                 "metex-m3860m", metex14,
 524                 "Metex", "M-3860M", "9600/7n2/rts=0/dtr=1",
 525                 4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 526                 sr_metex14_4packets_valid, sr_metex14_4packets_parse,
 527                 NULL
 528         ),
 529         DMM(
 530                 "metex-m4650cr", metex14,
 531                 "Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1",
 532                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 533                 sr_metex14_packet_valid, sr_metex14_parse,
 534                 NULL
 535         ),
 536         DMM(
 537                 "metex-me21", metex14,
 538                 "Metex", "ME-21", "2400/7n2/rts=0/dtr=1",
 539                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 540                 sr_metex14_packet_valid, sr_metex14_parse,
 541                 NULL
 542         ),
 543         DMM(
 544                 "metex-me31", metex14,
 545                 "Metex", "ME-31", "600/7n2/rts=0/dtr=1",
 546                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 547                 sr_metex14_packet_valid, sr_metex14_parse,
 548                 NULL
 549         ),
 550         DMM(
 551                 "peaktech-3410", metex14,
 552                 "PeakTech", "3410", "600/7n2/rts=0/dtr=1",
 553                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 554                 sr_metex14_packet_valid, sr_metex14_parse,
 555                 NULL
 556         ),
 557         DMM(
 558                 "peaktech-4370", metex14,
 559                 "PeakTech", "4370", "1200/7n2/rts=0/dtr=1",
 560                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 561                 sr_metex14_packet_valid, sr_metex14_parse,
 562                 NULL
 563         ),
 564         DMM(
 565                 "peaktech-4390a", metex14,
 566                 "PeakTech", "4390A", "9600/7n2/rts=0/dtr=1",
 567                 4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 568                 sr_metex14_4packets_valid, sr_metex14_4packets_parse,
 569                 NULL
 570         ),
 571         DMM(
 572                 "radioshack-22-168", metex14,
 573                 "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1",
 574                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 575                 sr_metex14_packet_valid, sr_metex14_parse,
 576                 NULL
 577         ),
 578         DMM(
 579                 "radioshack-22-805", metex14,
 580                 "RadioShack", "22-805", "600/7n2/rts=0/dtr=1",
 581                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 582                 sr_metex14_packet_valid, sr_metex14_parse,
 583                 NULL
 584         ),
 585         DMM(
 586                 "voltcraft-m3650cr", metex14,
 587                 "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1",
 588                 METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
 589                 sr_metex14_packet_valid, sr_metex14_parse,
 590                 NULL
 591         ),
 592         DMM(
 593                 "voltcraft-m3650d", metex14,
 594                 "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1",
 595                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 596                 sr_metex14_packet_valid, sr_metex14_parse,
 597                 NULL
 598         ),
 599         DMM(
 600                 "voltcraft-m4650cr", metex14,
 601                 "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1",
 602                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 603                 sr_metex14_packet_valid, sr_metex14_parse,
 604                 NULL
 605         ),
 606         DMM(
 607                 "voltcraft-me42", metex14,
 608                 "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1",
 609                 METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
 610                 sr_metex14_packet_valid, sr_metex14_parse,
 611                 NULL
 612         ),
 613         /* }}} */
 614         /* rs9lcd based meters {{{ */
 615         DMM(
 616                 "radioshack-22-812", rs9lcd,
 617                 "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1",
 618                 RS9LCD_PACKET_SIZE, 0, 0, NULL,
 619                 sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
 620                 NULL
 621         ),
 622         /* }}} */
 623         /* ut71x based meters {{{ */
 624         DMM(
 625                 "tenma-72-7730-ser", ut71x,
 626                 "Tenma", "72-7730 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 627                 UT71X_PACKET_SIZE, 0, 0, NULL,
 628                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 629         ),
 630         DMM(
 631                 "tenma-72-7732-ser", ut71x,
 632                 "Tenma", "72-7732 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 633                 UT71X_PACKET_SIZE, 0, 0, NULL,
 634                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 635         ),
 636         DMM(
 637                 "tenma-72-9380a-ser", ut71x,
 638                 "Tenma", "72-9380A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 639                 UT71X_PACKET_SIZE, 0, 0, NULL,
 640                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 641         ),
 642         DMM(
 643                 "uni-t-ut71a-ser", ut71x,
 644                 "UNI-T", "UT71A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 645                 UT71X_PACKET_SIZE, 0, 0, NULL,
 646                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 647         ),
 648         DMM(
 649                 "uni-t-ut71b-ser", ut71x,
 650                 "UNI-T", "UT71B (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 651                 UT71X_PACKET_SIZE, 0, 0, NULL,
 652                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 653         ),
 654         DMM(
 655                 "uni-t-ut71c-ser", ut71x,
 656                 "UNI-T", "UT71C (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 657                 UT71X_PACKET_SIZE, 0, 0, NULL,
 658                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 659         ),
 660         DMM(
 661                 "uni-t-ut71d-ser", ut71x,
 662                 "UNI-T", "UT71D (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 663                 UT71X_PACKET_SIZE, 0, 0, NULL,
 664                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 665         ),
 666         DMM(
 667                 "uni-t-ut71e-ser", ut71x,
 668                 "UNI-T", "UT71E (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 669                 UT71X_PACKET_SIZE, 0, 0, NULL,
 670                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 671         ),
 672         DMM(
 673                 "uni-t-ut804-ser", ut71x,
 674                 "UNI-T", "UT804", "2400/7o1/rts=0/dtr=1",
 675                 UT71X_PACKET_SIZE, 0, 0, NULL,
 676                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 677         ),
 678         DMM(
 679                 "voltcraft-vc920-ser", ut71x,
 680                 "Voltcraft", "VC-920 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 681                 UT71X_PACKET_SIZE, 0, 0, NULL,
 682                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 683         ),
 684         DMM(
 685                 "voltcraft-vc940-ser", ut71x,
 686                 "Voltcraft", "VC-940 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 687                 UT71X_PACKET_SIZE, 0, 0, NULL,
 688                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 689         ),
 690         DMM(
 691                 "voltcraft-vc960-ser", ut71x,
 692                 "Voltcraft", "VC-960 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 693                 UT71X_PACKET_SIZE, 0, 0, NULL,
 694                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 695         ),
 696         /* }}} */
 697         /* vc870 based meters {{{ */
 698         DMM(
 699                 "voltcraft-vc870-ser", vc870,
 700                 "Voltcraft", "VC-870 (UT-D02 cable)", "9600/8n1/rts=0/dtr=1",
 701                 VC870_PACKET_SIZE, 0, 0, NULL,
 702                 sr_vc870_packet_valid, sr_vc870_parse, NULL
 703         ),
 704         /* }}} */
 705         /* vc96 based meters {{{ */
 706         DMM(
 707                 "voltcraft-vc96", vc96,
 708                 "Voltcraft", "VC-96", "1200/8n2",
 709                 VC96_PACKET_SIZE, 0, 0, NULL,
 710                 sr_vc96_packet_valid, sr_vc96_parse,
 711                 NULL
 712         ),
 713         /* }}} */
 714         /*
 715          * The list is sorted. Add new items in the respective chip's group.
 716          */
 717 );