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         for (ch_idx = 0; ch_idx < dmm->channel_count; ch_idx++) {
 144                 size_t ch_num;
 145                 const char *fmt;
 146                 fmt = "P%zu";
 147                 if (dmm->channel_formats && dmm->channel_formats[ch_idx])
 148                         fmt = dmm->channel_formats[ch_idx];
 149                 ch_num = ch_idx + 1;
 150                 snprintf(ch_name, sizeof(ch_name), fmt, ch_num);
 151                 sr_channel_new(sdi, ch_idx, SR_CHANNEL_ANALOG, TRUE, ch_name);
 152         }
 153         devices = g_slist_append(devices, sdi);
 154
 155 scan_cleanup:
 156         serial_close(serial);
 157
 158         return std_scan_complete(di, devices);
 159 }
 160
 161 static int config_set(uint32_t key, GVariant *data,
 162         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 163 {
 164         struct dev_context *devc;
 165
 166         (void)cg;
 167
 168         devc = sdi->priv;
 169
 170         return sr_sw_limits_config_set(&devc->limits, key, data);
 171 }
 172
 173 static int config_list(uint32_t key, GVariant **data,
 174         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 175 {
 176         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 177 }
 178
 179 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 180 {
 181         struct dev_context *devc;
 182         struct sr_serial_dev_inst *serial;
 183
 184         devc = sdi->priv;
 185
 186         sr_sw_limits_acquisition_start(&devc->limits);
 187         std_session_send_df_header(sdi);
 188
 189         serial = sdi->conn;
 190         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 191                       receive_data, (void *)sdi);
 192
 193         return SR_OK;
 194 }
 195
 196 #define DMM(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, \
 197                         DELAY, REQUEST, VALID, PARSE, DETAILS) \
 198         &((struct dmm_info) { \
 199                 { \
 200                         .name = ID, \
 201                         .longname = VENDOR " " MODEL, \
 202                         .api_version = 1, \
 203                         .init = std_init, \
 204                         .cleanup = std_cleanup, \
 205                         .scan = scan, \
 206                         .dev_list = std_dev_list, \
 207                         .dev_clear = std_dev_clear, \
 208                         .config_get = NULL, \
 209                         .config_set = config_set, \
 210                         .config_list = config_list, \
 211                         .dev_open = std_serial_dev_open, \
 212                         .dev_close = std_serial_dev_close, \
 213                         .dev_acquisition_start = dev_acquisition_start, \
 214                         .dev_acquisition_stop = std_serial_dev_acquisition_stop, \
 215                         .context = NULL, \
 216                 }, \
 217                 VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, DELAY, \
 218                 REQUEST, 1, NULL, VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
 219         }).di
 220
 221 SR_REGISTER_DEV_DRIVER_LIST(serial_dmm_drivers,
 222         /*
 223          * The items are sorted by chipset first and then model name.
 224          *
 225          * This reflects the developer's perspective and is preferrable
 226          * during maintenance, as a vendor/product based sort order does
 227          * not work well for rebranded models, and from a support point
 228          * of view it's more important to identify similarities between
 229          * models and compatible devices.
 230          *
 231          * Fold marks {{{ }}} with matching braces were added, to further
 232          * speed up navigation in the long list.
 233          */
 234         /* asycii based meters {{{ */
 235         DMM(
 236                 "metrix-mx56c", asycii, "Metrix", "MX56C",
 237                 "2400/8n1", 2400, ASYCII_PACKET_SIZE, 0, 0, NULL,
 238                 sr_asycii_packet_valid, sr_asycii_parse, NULL
 239         ),
 240         /* }}} */
 241         /* bm25x based meters {{{ */
 242         DMM(
 243                 "brymen-bm25x", bm25x,
 244                 "Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
 245                 9600, BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
 246                 sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
 247                 NULL
 248         ),
 249         /* }}} */
 250         /* dtm0660 based meters {{{ */
 251         DMM(
 252                 "peaktech-3415", dtm0660,
 253                 "PeakTech", "3415", "2400/8n1/rts=0/dtr=1",
 254                 2400, DTM0660_PACKET_SIZE, 0, 0, NULL,
 255                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 256         ),
 257         DMM(
 258                 "velleman-dvm4100", dtm0660,
 259                 "Velleman", "DVM4100", "2400/8n1/rts=0/dtr=1",
 260                 2400, DTM0660_PACKET_SIZE, 0, 0, NULL,
 261                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 262         ),
 263         /* }}} */
 264         /* eev121gw based meters {{{ */
 265         DMM(
 266                 "eevblog-121gw", eev121gw, "EEVblog", "121GW",
 267                 "115200/8n1", 115200, EEV121GW_PACKET_SIZE, 0, 0, NULL,
 268                 sr_eev121gw_packet_valid, sr_eev121gw_3displays_parse, NULL
 269         ),
 270         /* }}} */
 271         /* es519xx based meters {{{ */
 272         DMM(
 273                 "iso-tech-idm103n", es519xx,
 274                 "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
 275                 2400, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 276                 sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
 277                 NULL
 278         ),
 279         /*
 280          * Note: ES51922 and ES51986 baudrate is actually 19230. This is
 281          * "out" by .15%, and so is well within the typical 1% margin
 282          * that is considered acceptable in UART communication, and thus
 283          * should not cause an issue.
 284          *
 285          * However, using 19230 as baudrate here will not work, as most DMM
 286          * cables do not support that baudrate!
 287          */
 288         DMM(
 289                 "tenma-72-7750-ser", es519xx,
 290                 "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 291                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 292                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 293                 NULL
 294         ),
 295         DMM(
 296                 "uni-t-ut60g-ser", es519xx,
 297                 "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 298                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 299                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 300                 NULL
 301         ),
 302         DMM(
 303                 "uni-t-ut61e-ser", es519xx,
 304                 "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 305                 19200, ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
 306                 sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
 307                 NULL
 308         ),
 309         /* }}} */
 310         /* fs9721 based meters {{{ */
 311         DMM(
 312                 "digitek-dt4000zc", fs9721,
 313                 "Digitek", "DT4000ZC", "2400/8n1/dtr=1", 2400,
 314                 FS9721_PACKET_SIZE, 0, 0, NULL,
 315                 sr_fs9721_packet_valid, sr_fs9721_parse,
 316                 sr_fs9721_10_temp_c
 317         ),
 318         DMM(
 319                 "mastech-ms8250b", fs9721,
 320                 "MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
 321                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 322                 sr_fs9721_packet_valid, sr_fs9721_parse,
 323                 NULL
 324         ),
 325         DMM(
 326                 "pce-pce-dm32", fs9721,
 327                 "PCE", "PCE-DM32", "2400/8n1", 2400,
 328                 FS9721_PACKET_SIZE, 0, 0, NULL,
 329                 sr_fs9721_packet_valid, sr_fs9721_parse,
 330                 sr_fs9721_01_10_temp_f_c
 331         ),
 332         DMM(
 333                 "peaktech-3330", fs9721,
 334                 "PeakTech", "3330", "2400/8n1/dtr=1", 2400,
 335                 FS9721_PACKET_SIZE, 0, 0, NULL,
 336                 sr_fs9721_packet_valid, sr_fs9721_parse,
 337                 sr_fs9721_01_10_temp_f_c
 338         ),
 339         DMM(
 340                 "tecpel-dmm-8061-ser", fs9721,
 341                 "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 342                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 343                 sr_fs9721_packet_valid, sr_fs9721_parse,
 344                 sr_fs9721_00_temp_c
 345         ),
 346         DMM(
 347                 "tekpower-tp4000ZC", fs9721,
 348                 "TekPower", "TP4000ZC", "2400/8n1/dtr=1", 2400,
 349                 FS9721_PACKET_SIZE, 0, 0, NULL,
 350                 sr_fs9721_packet_valid, sr_fs9721_parse,
 351                 sr_fs9721_10_temp_c
 352         ),
 353         DMM(
 354                 "tenma-72-7745-ser", fs9721,
 355                 "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 356                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 357                 sr_fs9721_packet_valid, sr_fs9721_parse,
 358                 sr_fs9721_00_temp_c
 359         ),
 360         DMM(
 361                 "uni-t-ut60a-ser", fs9721,
 362                 "UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 363                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 364                 sr_fs9721_packet_valid, sr_fs9721_parse,
 365                 NULL
 366         ),
 367         DMM(
 368                 "uni-t-ut60e-ser", fs9721,
 369                 "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 370                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 371                 sr_fs9721_packet_valid, sr_fs9721_parse,
 372                 sr_fs9721_00_temp_c
 373         ),
 374         DMM(
 375                 "va-va18b", fs9721,
 376                 "V&A", "VA18B", "2400/8n1", 2400,
 377                 FS9721_PACKET_SIZE, 0, 0, NULL,
 378                 sr_fs9721_packet_valid, sr_fs9721_parse,
 379                 sr_fs9721_01_temp_c
 380         ),
 381         DMM(
 382                 "va-va40b", fs9721,
 383                 "V&A", "VA40B", "2400/8n1", 2400,
 384                 FS9721_PACKET_SIZE, 0, 0, NULL,
 385                 sr_fs9721_packet_valid, sr_fs9721_parse,
 386                 sr_fs9721_max_c_min
 387         ),
 388         DMM(
 389                 "voltcraft-vc820-ser", fs9721,
 390                 "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 391                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 392                 sr_fs9721_packet_valid, sr_fs9721_parse,
 393                 NULL
 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         /* }}} */
 403         /* fs9922 based meters {{{ */
 404         DMM(
 405                 "sparkfun-70c", fs9922,
 406                 "SparkFun", "70C", "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-ut61b-ser", fs9922,
 412                 "UNI-T", "UT61B (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-ut61c-ser", fs9922,
 418                 "UNI-T", "UT61C (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                 "uni-t-ut61d-ser", fs9922,
 424                 "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 425                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 426                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 427         ),
 428         DMM(
 429                 "victor-dmm-ser", fs9922,
 430                 "Victor", "Victor DMMs (Mini-USB cable)", "2400/8n1",
 431                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 432                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 433         ),
 434         DMM(
 435                 /*
 436                  * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
 437                  * the FS9922 protocol. Instead, it only sets the user-defined
 438                  * bit "z1" to indicate "diode mode" and "voltage".
 439                  */
 440                 "voltcraft-vc830-ser", fs9922,
 441                 "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 442                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 443                 sr_fs9922_packet_valid, sr_fs9922_parse,
 444                 &sr_fs9922_z1_diode
 445         ),
 446         /* }}} */
 447         /* m2110 based meters {{{ */
 448         DMM(
 449                 "bbcgm-2010", m2110,
 450                 "BBC Goertz Metrawatt", "M2110", "1200/7n2", 1200,
 451                 BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
 452                 sr_m2110_packet_valid, sr_m2110_parse,
 453                 NULL
 454         ),
 455         /* }}} */
 456         /* ms8250d based meters {{{ */
 457         DMM(
 458                 "mastech-ms8250d", ms8250d,
 459                 "MASTECH", "MS8250D", "2400/8n1/rts=0/dtr=1",
 460                 2400, MS8250D_PACKET_SIZE, 0, 0, NULL,
 461                 sr_ms8250d_packet_valid, sr_ms8250d_parse,
 462                 NULL
 463         ),
 464         /* }}} */
 465         /* metex14 based meters {{{ */
 466         DMM(
 467                 "mastech-mas345", metex14,
 468                 "MASTECH", "MAS345", "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                 "metex-m3640d", metex14,
 475                 "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1", 1200,
 476                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 477                 sr_metex14_packet_valid, sr_metex14_parse,
 478                 NULL
 479         ),
 480         DMM(
 481                 "metex-m3860m", metex14,
 482                 "Metex", "M-3860M", "9600/7n2/rts=0/dtr=1", 9600,
 483                 4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 484                 sr_metex14_4packets_valid, sr_metex14_4packets_parse,
 485                 NULL
 486         ),
 487         DMM(
 488                 "metex-m4650cr", metex14,
 489                 "Metex", "M-4650CR", "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                 "metex-me31", metex14,
 496                 "Metex", "ME-31", "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                 "peaktech-3410", metex14,
 503                 "PeakTech", "3410", "600/7n2/rts=0/dtr=1", 600,
 504                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 505                 sr_metex14_packet_valid, sr_metex14_parse,
 506                 NULL
 507         ),
 508         DMM(
 509                 "peaktech-4370", metex14,
 510                 "PeakTech", "4370", "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                 "peaktech-4390a", metex14,
 517                 "PeakTech", "4390A", "9600/7n2/rts=0/dtr=1", 9600,
 518                 4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 519                 sr_metex14_4packets_valid, sr_metex14_4packets_parse,
 520                 NULL
 521         ),
 522         DMM(
 523                 "radioshack-22-168", metex14,
 524                 "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1", 1200,
 525                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 526                 sr_metex14_packet_valid, sr_metex14_parse,
 527                 NULL
 528         ),
 529         DMM(
 530                 "radioshack-22-805", metex14,
 531                 "RadioShack", "22-805", "600/7n2/rts=0/dtr=1", 600,
 532                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 533                 sr_metex14_packet_valid, sr_metex14_parse,
 534                 NULL
 535         ),
 536         DMM(
 537                 "voltcraft-m3650cr", metex14,
 538                 "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1", 1200,
 539                 METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
 540                 sr_metex14_packet_valid, sr_metex14_parse,
 541                 NULL
 542         ),
 543         DMM(
 544                 "voltcraft-m3650d", metex14,
 545                 "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1", 1200,
 546                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 547                 sr_metex14_packet_valid, sr_metex14_parse,
 548                 NULL
 549         ),
 550         DMM(
 551                 "voltcraft-m4650cr", metex14,
 552                 "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 553                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 554                 sr_metex14_packet_valid, sr_metex14_parse,
 555                 NULL
 556         ),
 557         DMM(
 558                 "voltcraft-me42", metex14,
 559                 "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1", 600,
 560                 METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
 561                 sr_metex14_packet_valid, sr_metex14_parse,
 562                 NULL
 563         ),
 564         /* }}} */
 565         /* rs9lcd based meters {{{ */
 566         DMM(
 567                 "radioshack-22-812", rs9lcd,
 568                 "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1", 4800,
 569                 RS9LCD_PACKET_SIZE, 0, 0, NULL,
 570                 sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
 571                 NULL
 572         ),
 573         /* }}} */
 574         /* ut71x based meters {{{ */
 575         DMM(
 576                 "tenma-72-7730-ser", ut71x,
 577                 "Tenma", "72-7730 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 578                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 579                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 580         ),
 581         DMM(
 582                 "tenma-72-7732-ser", ut71x,
 583                 "Tenma", "72-7732 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 584                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 585                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 586         ),
 587         DMM(
 588                 "tenma-72-9380a-ser", ut71x,
 589                 "Tenma", "72-9380A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 590                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 591                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 592         ),
 593         DMM(
 594                 "uni-t-ut71a-ser", ut71x,
 595                 "UNI-T", "UT71A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 596                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 597                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 598         ),
 599         DMM(
 600                 "uni-t-ut71b-ser", ut71x,
 601                 "UNI-T", "UT71B (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 602                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 603                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 604         ),
 605         DMM(
 606                 "uni-t-ut71c-ser", ut71x,
 607                 "UNI-T", "UT71C (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 608                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 609                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 610         ),
 611         DMM(
 612                 "uni-t-ut71d-ser", ut71x,
 613                 "UNI-T", "UT71D (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 614                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 615                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 616         ),
 617         DMM(
 618                 "uni-t-ut71e-ser", ut71x,
 619                 "UNI-T", "UT71E (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 620                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 621                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 622         ),
 623         DMM(
 624                 "voltcraft-vc920-ser", ut71x,
 625                 "Voltcraft", "VC-920 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 626                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 627                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 628         ),
 629         DMM(
 630                 "voltcraft-vc940-ser", ut71x,
 631                 "Voltcraft", "VC-940 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 632                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 633                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 634         ),
 635         DMM(
 636                 "voltcraft-vc960-ser", ut71x,
 637                 "Voltcraft", "VC-960 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 638                 2400, UT71X_PACKET_SIZE, 0, 0, NULL,
 639                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 640         ),
 641         /* }}} */
 642         /* vc870 based meters {{{ */
 643         DMM(
 644                 "voltcraft-vc870-ser", vc870,
 645                 "Voltcraft", "VC-870 (UT-D02 cable)", "9600/8n1/rts=0/dtr=1",
 646                 9600, VC870_PACKET_SIZE, 0, 0, NULL,
 647                 sr_vc870_packet_valid, sr_vc870_parse, NULL
 648         ),
 649         /* }}} */
 650         /* vc96 based meters {{{ */
 651         DMM(
 652                 "voltcraft-vc96", vc96,
 653                 "Voltcraft", "VC-96", "1200/8n2", 1200,
 654                 VC96_PACKET_SIZE, 0, 0, NULL,
 655                 sr_vc96_packet_valid, sr_vc96_parse,
 656                 NULL
 657         ),
 658         /* }}} */
 659         /*
 660          * The list is sorted. Add new items in the respective chip's group.
 661          */
 662 );