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