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         for (ch_idx = 0; ch_idx < dmm->channel_count; ch_idx++) {
 140                 snprintf(ch_name, sizeof(ch_name), "P%zu", ch_idx);
 141                 sr_channel_new(sdi, ch_idx, SR_CHANNEL_ANALOG, TRUE, ch_name);
 142         }
 143         devices = g_slist_append(devices, sdi);
 144
 145 scan_cleanup:
 146         serial_close(serial);
 147
 148         return std_scan_complete(di, devices);
 149 }
 150
 151 static int config_set(uint32_t key, GVariant *data,
 152         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 153 {
 154         struct dev_context *devc;
 155
 156         (void)cg;
 157
 158         devc = sdi->priv;
 159
 160         return sr_sw_limits_config_set(&devc->limits, key, data);
 161 }
 162
 163 static int config_list(uint32_t key, GVariant **data,
 164         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 165 {
 166         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 167 }
 168
 169 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 170 {
 171         struct dev_context *devc;
 172         struct sr_serial_dev_inst *serial;
 173
 174         devc = sdi->priv;
 175
 176         sr_sw_limits_acquisition_start(&devc->limits);
 177         std_session_send_df_header(sdi);
 178
 179         serial = sdi->conn;
 180         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 181                       receive_data, (void *)sdi);
 182
 183         return SR_OK;
 184 }
 185
 186 #define DMM(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, \
 187                         DELAY, REQUEST, VALID, PARSE, DETAILS) \
 188         &((struct dmm_info) { \
 189                 { \
 190                         .name = ID, \
 191                         .longname = VENDOR " " MODEL, \
 192                         .api_version = 1, \
 193                         .init = std_init, \
 194                         .cleanup = std_cleanup, \
 195                         .scan = scan, \
 196                         .dev_list = std_dev_list, \
 197                         .dev_clear = std_dev_clear, \
 198                         .config_get = NULL, \
 199                         .config_set = config_set, \
 200                         .config_list = config_list, \
 201                         .dev_open = std_serial_dev_open, \
 202                         .dev_close = std_serial_dev_close, \
 203                         .dev_acquisition_start = dev_acquisition_start, \
 204                         .dev_acquisition_stop = std_serial_dev_acquisition_stop, \
 205                         .context = NULL, \
 206                 }, \
 207                 VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, DELAY, \
 208                 REQUEST, 1, VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
 209         }).di
 210
 211 SR_REGISTER_DEV_DRIVER_LIST(serial_dmm_drivers,
 212         /*
 213          * The items are sorted by chipset first and then model name.
 214          *
 215          * This reflects the developer's perspective and is preferrable
 216          * during maintenance, as a vendor/product based sort order does
 217          * not work well for rebranded models, and from a support point
 218          * of view it's more important to identify similarities between
 219          * models and compatible devices.
 220          *
 221          * Fold marks {{{ }}} with matching braces were added, to further
 222          * speed up navigation in the long list.
 223          */
 224         /* asycii based meters {{{ */
 225         DMM(
 226                 "metrix-mx56c", asycii, "Metrix", "MX56C",
 227                 "2400/8n1", 2400, ASYCII_PACKET_SIZE, 0, 0, NULL,
 228                 sr_asycii_packet_valid, sr_asycii_parse, NULL
 229         ),
 230         /* }}} */
 231         /* bm25x based meters {{{ */
 232         DMM(
 233                 "brymen-bm25x", bm25x,
 234                 "Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
 235                 9600, BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
 236                 sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
 237                 NULL
 238         ),
 239         /* }}} */
 240         /* dtm0660 based meters {{{ */
 241         DMM(
 242                 "peaktech-3415", dtm0660,
 243                 "PeakTech", "3415", "2400/8n1/rts=0/dtr=1",
 244                 2400, DTM0660_PACKET_SIZE, 0, 0, NULL,
 245                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 246         ),
 247         DMM(
 248                 "velleman-dvm4100", dtm0660,
 249                 "Velleman", "DVM4100", "2400/8n1/rts=0/dtr=1",
 250                 2400, DTM0660_PACKET_SIZE, 0, 0, NULL,
 251                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 252         ),
 253         /* }}} */
 254         /* es519xx based meters {{{ */
 255         DMM(
 256                 "iso-tech-idm103n", es519xx,
 257                 "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
 258                 2400, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 259                 sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
 260                 NULL
 261         ),
 262         /*
 263          * Note: ES51922 and ES51986 baudrate is actually 19230. This is
 264          * "out" by .15%, and so is well within the typical 1% margin
 265          * that is considered acceptable in UART communication, and thus
 266          * should not cause an issue.
 267          *
 268          * However, using 19230 as baudrate here will not work, as most DMM
 269          * cables do not support that baudrate!
 270          */
 271         DMM(
 272                 "tenma-72-7750-ser", es519xx,
 273                 "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 274                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 275                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 276                 NULL
 277         ),
 278         DMM(
 279                 "uni-t-ut60g-ser", es519xx,
 280                 "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 281                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 282                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 283                 NULL
 284         ),
 285         DMM(
 286                 "uni-t-ut61e-ser", es519xx,
 287                 "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 288                 19200, ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
 289                 sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
 290                 NULL
 291         ),
 292         /* }}} */
 293         /* fs9721 based meters {{{ */
 294         DMM(
 295                 "digitek-dt4000zc", fs9721,
 296                 "Digitek", "DT4000ZC", "2400/8n1/dtr=1", 2400,
 297                 FS9721_PACKET_SIZE, 0, 0, NULL,
 298                 sr_fs9721_packet_valid, sr_fs9721_parse,
 299                 sr_fs9721_10_temp_c
 300         ),
 301         DMM(
 302                 "mastech-ms8250b", fs9721,
 303                 "MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
 304                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 305                 sr_fs9721_packet_valid, sr_fs9721_parse,
 306                 NULL
 307         ),
 308         DMM(
 309                 "pce-pce-dm32", fs9721,
 310                 "PCE", "PCE-DM32", "2400/8n1", 2400,
 311                 FS9721_PACKET_SIZE, 0, 0, NULL,
 312                 sr_fs9721_packet_valid, sr_fs9721_parse,
 313                 sr_fs9721_01_10_temp_f_c
 314         ),
 315         DMM(
 316                 "peaktech-3330", fs9721,
 317                 "PeakTech", "3330", "2400/8n1/dtr=1", 2400,
 318                 FS9721_PACKET_SIZE, 0, 0, NULL,
 319                 sr_fs9721_packet_valid, sr_fs9721_parse,
 320                 sr_fs9721_01_10_temp_f_c
 321         ),
 322         DMM(
 323                 "tecpel-dmm-8061-ser", fs9721,
 324                 "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 325                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 326                 sr_fs9721_packet_valid, sr_fs9721_parse,
 327                 sr_fs9721_00_temp_c
 328         ),
 329         DMM(
 330                 "tekpower-tp4000ZC", fs9721,
 331                 "TekPower", "TP4000ZC", "2400/8n1/dtr=1", 2400,
 332                 FS9721_PACKET_SIZE, 0, 0, NULL,
 333                 sr_fs9721_packet_valid, sr_fs9721_parse,
 334                 sr_fs9721_10_temp_c
 335         ),
 336         DMM(
 337                 "tenma-72-7745-ser", fs9721,
 338                 "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 339                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 340                 sr_fs9721_packet_valid, sr_fs9721_parse,
 341                 sr_fs9721_00_temp_c
 342         ),
 343         DMM(
 344                 "uni-t-ut60a-ser", fs9721,
 345                 "UNI-T", "UT60A (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                 NULL
 349         ),
 350         DMM(
 351                 "uni-t-ut60e-ser", fs9721,
 352                 "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 353                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 354                 sr_fs9721_packet_valid, sr_fs9721_parse,
 355                 sr_fs9721_00_temp_c
 356         ),
 357         DMM(
 358                 "va-va18b", fs9721,
 359                 "V&A", "VA18B", "2400/8n1", 2400,
 360                 FS9721_PACKET_SIZE, 0, 0, NULL,
 361                 sr_fs9721_packet_valid, sr_fs9721_parse,
 362                 sr_fs9721_01_temp_c
 363         ),
 364         DMM(
 365                 "va-va40b", fs9721,
 366                 "V&A", "VA40B", "2400/8n1", 2400,
 367                 FS9721_PACKET_SIZE, 0, 0, NULL,
 368                 sr_fs9721_packet_valid, sr_fs9721_parse,
 369                 sr_fs9721_max_c_min
 370         ),
 371         DMM(
 372                 "voltcraft-vc820-ser", fs9721,
 373                 "Voltcraft", "VC-820 (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                 NULL
 377         ),
 378         DMM(
 379                 "voltcraft-vc840-ser", fs9721,
 380                 "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 381                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 382                 sr_fs9721_packet_valid, sr_fs9721_parse,
 383                 sr_fs9721_00_temp_c
 384         ),
 385         /* }}} */
 386         /* fs9922 based meters {{{ */
 387         DMM(
 388                 "sparkfun-70c", fs9922,
 389                 "SparkFun", "70C", "2400/8n1/rts=0/dtr=1",
 390                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 391                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 392         ),
 393         DMM(
 394                 "uni-t-ut61b-ser", fs9922,
 395                 "UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 396                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 397                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 398         ),
 399         DMM(
 400                 "uni-t-ut61c-ser", fs9922,
 401                 "UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 402                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 403                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 404         ),
 405         DMM(
 406                 "uni-t-ut61d-ser", fs9922,
 407                 "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 408                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 409                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 410         ),
 411         DMM(
 412                 /*
 413                  * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
 414                  * the FS9922 protocol. Instead, it only sets the user-defined
 415                  * bit "z1" to indicate "diode mode" and "voltage".
 416                  */
 417                 "voltcraft-vc830-ser", fs9922,
 418                 "Voltcraft", "VC-830 (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,
 421                 &sr_fs9922_z1_diode
 422         ),
 423         /* }}} */
 424         /* m2110 based meters {{{ */
 425         DMM(
 426                 "bbcgm-2010", m2110,
 427                 "BBC Goertz Metrawatt", "M2110", "1200/7n2", 1200,
 428                 BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
 429                 sr_m2110_packet_valid, sr_m2110_parse,
 430                 NULL
 431         ),
 432         /* }}} */
 433         /* ms8250d based meters {{{ */
 434         DMM(
 435                 "mastech-ms8250d", ms8250d,
 436                 "MASTECH", "MS8250D", "2400/8n1/rts=0/dtr=1",
 437                 2400, MS8250D_PACKET_SIZE, 0, 0, NULL,
 438                 sr_ms8250d_packet_valid, sr_ms8250d_parse,
 439                 NULL
 440         ),
 441         /* }}} */
 442         /* metex14 based meters {{{ */
 443         DMM(
 444                 "mastech-mas345", metex14,
 445                 "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1", 600,
 446                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 447                 sr_metex14_packet_valid, sr_metex14_parse,
 448                 NULL
 449         ),
 450         DMM(
 451                 "metex-m3640d", metex14,
 452                 "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1", 1200,
 453                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 454                 sr_metex14_packet_valid, sr_metex14_parse,
 455                 NULL
 456         ),
 457         DMM(
 458                 "metex-m3860m", metex14,
 459                 "Metex", "M-3860M", "9600/7n2/rts=0/dtr=1", 9600,
 460                 4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 461                 sr_metex14_4packets_valid, sr_metex14_4packets_parse,
 462                 NULL
 463         ),
 464         DMM(
 465                 "metex-m4650cr", metex14,
 466                 "Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 467                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 468                 sr_metex14_packet_valid, sr_metex14_parse,
 469                 NULL
 470         ),
 471         DMM(
 472                 "metex-me31", metex14,
 473                 "Metex", "ME-31", "600/7n2/rts=0/dtr=1", 600,
 474                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 475                 sr_metex14_packet_valid, sr_metex14_parse,
 476                 NULL
 477         ),
 478         DMM(
 479                 "peaktech-3410", metex14,
 480                 "PeakTech", "3410", "600/7n2/rts=0/dtr=1", 600,
 481                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 482                 sr_metex14_packet_valid, sr_metex14_parse,
 483                 NULL
 484         ),
 485         DMM(
 486                 "peaktech-4370", metex14,
 487                 "PeakTech", "4370", "1200/7n2/rts=0/dtr=1", 1200,
 488                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 489                 sr_metex14_packet_valid, sr_metex14_parse,
 490                 NULL
 491         ),
 492         DMM(
 493                 "peaktech-4390a", metex14,
 494                 "PeakTech", "4390A", "9600/7n2/rts=0/dtr=1", 9600,
 495                 4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 496                 sr_metex14_4packets_valid, sr_metex14_4packets_parse,
 497                 NULL
 498         ),
 499         DMM(
 500                 "radioshack-22-168", metex14,
 501                 "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1", 1200,
 502                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 503                 sr_metex14_packet_valid, sr_metex14_parse,
 504                 NULL
 505         ),
 506         DMM(
 507                 "radioshack-22-805", metex14,
 508                 "RadioShack", "22-805", "600/7n2/rts=0/dtr=1", 600,
 509                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 510                 sr_metex14_packet_valid, sr_metex14_parse,
 511                 NULL
 512         ),
 513         DMM(
 514                 "voltcraft-m3650cr", metex14,
 515                 "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1", 1200,
 516                 METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
 517                 sr_metex14_packet_valid, sr_metex14_parse,
 518                 NULL
 519         ),
 520         DMM(
 521                 "voltcraft-m3650d", metex14,
 522                 "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1", 1200,
 523                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 524                 sr_metex14_packet_valid, sr_metex14_parse,
 525                 NULL
 526         ),
 527         DMM(
 528                 "voltcraft-m4650cr", metex14,
 529                 "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 530                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 531                 sr_metex14_packet_valid, sr_metex14_parse,
 532                 NULL
 533         ),
 534         DMM(
 535                 "voltcraft-me42", metex14,
 536                 "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1", 600,
 537                 METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
 538                 sr_metex14_packet_valid, sr_metex14_parse,
 539                 NULL
 540         ),
 541         /* }}} */
 542         /* rs9lcd based meters {{{ */
 543         DMM(
 544                 "radioshack-22-812", rs9lcd,
 545                 "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1", 4800,
 546                 RS9LCD_PACKET_SIZE, 0, 0, NULL,
 547                 sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
 548                 NULL
 549         ),
 550         /* }}} */
 551         /* ut71x based meters {{{ */
 552         DMM(
 553                 "tenma-72-7730-ser", ut71x,
 554                 "Tenma", "72-7730 (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                 "tenma-72-7732-ser", ut71x,
 560                 "Tenma", "72-7732 (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                 "tenma-72-9380a-ser", ut71x,
 566                 "Tenma", "72-9380A (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-ut71a-ser", ut71x,
 572                 "UNI-T", "UT71A (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-ut71b-ser", ut71x,
 578                 "UNI-T", "UT71B (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-ut71c-ser", ut71x,
 584                 "UNI-T", "UT71C (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                 "uni-t-ut71d-ser", ut71x,
 590                 "UNI-T", "UT71D (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                 "uni-t-ut71e-ser", ut71x,
 596                 "UNI-T", "UT71E (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-vc920-ser", ut71x,
 602                 "Voltcraft", "VC-920 (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                 "voltcraft-vc940-ser", ut71x,
 608                 "Voltcraft", "VC-940 (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                 "voltcraft-vc960-ser", ut71x,
 614                 "Voltcraft", "VC-960 (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         /* }}} */
 619         /* vc870 based meters {{{ */
 620         DMM(
 621                 "voltcraft-vc870-ser", vc870,
 622                 "Voltcraft", "VC-870 (UT-D02 cable)", "9600/8n1/rts=0/dtr=1",
 623                 9600, VC870_PACKET_SIZE, 0, 0, NULL,
 624                 sr_vc870_packet_valid, sr_vc870_parse, NULL
 625         ),
 626         /* }}} */
 627         /*
 628          * The list is sorted. Add new items in the respective chip's group.
 629          */
 630 );