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_GET | SR_CONF_SET,
  44         SR_CONF_LIMIT_MSEC | SR_CONF_GET | 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 ret;
  57         size_t dropped, len, packet_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         sr_info("Probing serial port %s.", conn);
  85
  86         if (dmm->after_open) {
  87                 ret = dmm->after_open(serial);
  88                 if (ret != SR_OK) {
  89                         sr_err("Activity after port open failed: %d.", ret);
  90                         return NULL;
  91                 }
  92         }
  93
  94         devices = NULL;
  95
  96         /* Request a packet if the DMM requires this. */
  97         if (dmm->packet_request) {
  98                 if ((ret = dmm->packet_request(serial)) < 0) {
  99                         sr_err("Failed to request packet: %d.", ret);
 100                         return NULL;
 101                 }
 102         }
 103
 104         /*
 105          * There's no way to get an ID from the multimeter. It just sends data
 106          * periodically (or upon request), so the best we can do is check if
 107          * the packets match the expected format.
 108          *
 109          * If we dropped more than two packets worth of data, something is
 110          * wrong. We shouldn't quit however, since the dropped bytes might be
 111          * just zeroes at the beginning of the stream. Those can occur as a
 112          * combination of the nonstandard cable that ships with some devices
 113          * and the serial port or USB to serial adapter.
 114          */
 115         len = sizeof(buf);
 116         ret = serial_stream_detect(serial, buf, &len, dmm->packet_size,
 117                 dmm->packet_valid, dmm->packet_valid_len, &packet_len, 3000);
 118         if (ret != SR_OK)
 119                 goto scan_cleanup;
 120         dropped = len - dmm->packet_size;
 121         if (dropped > 2 * packet_len)
 122                 sr_warn("Packet search dropped a lot of data.");
 123         sr_info("Found device on port %s.", conn);
 124
 125         /*
 126          * Setup optional additional callbacks when sub device drivers
 127          * happen to provide them. (This is a compromise to do it here,
 128          * and not extend the DMM_CONN() et al set of macros.)
 129          */
 130         if (dmm->packet_parse == sr_brymen_bm52x_parse) {
 131                 dmm->dmm_state_init = brymen_bm52x_state_init;
 132                 dmm->dmm_state_free = brymen_bm52x_state_free;
 133                 dmm->config_get = brymen_bm52x_config_get;
 134                 dmm->config_set = brymen_bm52x_config_set;
 135                 dmm->config_list = brymen_bm52x_config_list;
 136                 dmm->acquire_start = brymen_bm52x_acquire_start;
 137         }
 138         if (dmm->dmm_state_init)
 139                 dmm->dmm_state = dmm->dmm_state_init();
 140
 141         /* Setup the device instance. */
 142         sdi = g_malloc0(sizeof(*sdi));
 143         sdi->status = SR_ST_INACTIVE;
 144         sdi->vendor = g_strdup(dmm->vendor);
 145         sdi->model = g_strdup(dmm->device);
 146         devc = g_malloc0(sizeof(*devc));
 147         sr_sw_limits_init(&devc->limits);
 148         sdi->inst_type = SR_INST_SERIAL;
 149         sdi->conn = serial;
 150         sdi->priv = devc;
 151
 152         /* Create (optionally device dependent) channel(s). */
 153         dmm->channel_count = 1;
 154         if (dmm->packet_parse == sr_brymen_bm52x_parse)
 155                 dmm->channel_count = BRYMEN_BM52X_DISPLAY_COUNT;
 156         if (dmm->packet_parse == sr_brymen_bm86x_parse)
 157                 dmm->channel_count = BRYMEN_BM86X_DISPLAY_COUNT;
 158         if (dmm->packet_parse == sr_eev121gw_3displays_parse) {
 159                 dmm->channel_count = EEV121GW_DISPLAY_COUNT;
 160                 dmm->channel_formats = eev121gw_channel_formats;
 161         }
 162         if (dmm->packet_parse == sr_metex14_4packets_parse)
 163                 dmm->channel_count = 4;
 164         if (dmm->packet_parse == sr_ms2115b_parse) {
 165                 dmm->channel_count = MS2115B_DISPLAY_COUNT;
 166                 dmm->channel_formats = ms2115b_channel_formats;
 167         }
 168         for (ch_idx = 0; ch_idx < dmm->channel_count; ch_idx++) {
 169                 size_t ch_num;
 170                 const char *fmt;
 171                 fmt = "P%zu";
 172                 if (dmm->channel_formats && dmm->channel_formats[ch_idx])
 173                         fmt = dmm->channel_formats[ch_idx];
 174                 ch_num = ch_idx + 1;
 175                 snprintf(ch_name, sizeof(ch_name), fmt, ch_num);
 176                 sr_channel_new(sdi, ch_idx, SR_CHANNEL_ANALOG, TRUE, ch_name);
 177         }
 178
 179         /* Add found device to result set. */
 180         devices = g_slist_append(devices, sdi);
 181
 182 scan_cleanup:
 183         serial_close(serial);
 184
 185         return std_scan_complete(di, devices);
 186 }
 187
 188 static int config_get(uint32_t key, GVariant **data,
 189         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 190 {
 191         struct dev_context *devc;
 192         struct dmm_info *dmm;
 193
 194         if (!sdi)
 195                 return SR_ERR_ARG;
 196         devc = sdi->priv;
 197
 198         switch (key) {
 199         case SR_CONF_LIMIT_SAMPLES:
 200         case SR_CONF_LIMIT_FRAMES:
 201         case SR_CONF_LIMIT_MSEC:
 202                 return sr_sw_limits_config_get(&devc->limits, key, data);
 203         default:
 204                 dmm = (struct dmm_info *)sdi->driver;
 205                 if (!dmm || !dmm->config_get)
 206                         return SR_ERR_NA;
 207                 return dmm->config_get(dmm->dmm_state, key, data, sdi, cg);
 208         }
 209         /* UNREACH */
 210 }
 211
 212 static int config_set(uint32_t key, GVariant *data,
 213         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 214 {
 215         struct dev_context *devc;
 216         struct dmm_info *dmm;
 217
 218         if (!sdi)
 219                 return SR_ERR_ARG;
 220         devc = sdi->priv;
 221         (void)cg;
 222
 223         switch (key) {
 224         case SR_CONF_LIMIT_SAMPLES:
 225         case SR_CONF_LIMIT_FRAMES:
 226         case SR_CONF_LIMIT_MSEC:
 227                 return sr_sw_limits_config_set(&devc->limits, key, data);
 228         default:
 229                 dmm = (struct dmm_info *)sdi->driver;
 230                 if (!dmm || !dmm->config_set)
 231                         return SR_ERR_NA;
 232                 return dmm->config_set(dmm->dmm_state, key, data, sdi, cg);
 233         }
 234 }
 235
 236 static int config_list(uint32_t key, GVariant **data,
 237         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 238 {
 239         struct dmm_info *dmm;
 240         int ret;
 241
 242         /* Use common logic for standard keys. */
 243         if (!sdi)
 244                 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 245
 246         /*
 247          * Check for device specific config_list handler. ERR N/A from
 248          * that handler is non-fatal, just falls back to common logic.
 249          */
 250         dmm = (struct dmm_info *)sdi->driver;
 251         if (dmm && dmm->config_list) {
 252                 ret = dmm->config_list(dmm->dmm_state, key, data, sdi, cg);
 253                 if (ret != SR_ERR_NA)
 254                         return ret;
 255         }
 256
 257         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 258 }
 259
 260 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 261 {
 262         struct dev_context *devc;
 263         struct dmm_info *dmm;
 264         sr_receive_data_callback cb_func;
 265         void *cb_data;
 266         int ret;
 267         struct sr_serial_dev_inst *serial;
 268
 269         devc = sdi->priv;
 270
 271         sr_sw_limits_acquisition_start(&devc->limits);
 272         std_session_send_df_header(sdi);
 273
 274         cb_func = receive_data;
 275         cb_data = (void *)sdi;
 276         dmm = (struct dmm_info *)sdi->driver;
 277         if (dmm && dmm->acquire_start) {
 278                 ret = dmm->acquire_start(dmm->dmm_state, sdi,
 279                         &cb_func, &cb_data);
 280                 if (ret < 0)
 281                         return ret;
 282         }
 283
 284         serial = sdi->conn;
 285         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 286                 cb_func, cb_data);
 287
 288         return SR_OK;
 289 }
 290
 291 #define DMM_ENTRY(ID, CHIPSET, VENDOR, MODEL, \
 292                 CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 293                 OPEN, REQUEST, VALID, PARSE, DETAILS, \
 294                 INIT_STATE, FREE_STATE, VALID_LEN, PARSE_LEN, \
 295                 CFG_GET, CFG_SET, CFG_LIST, ACQ_START) \
 296         &((struct dmm_info) { \
 297                 { \
 298                         .name = ID, \
 299                         .longname = VENDOR " " MODEL, \
 300                         .api_version = 1, \
 301                         .init = std_init, \
 302                         .cleanup = std_cleanup, \
 303                         .scan = scan, \
 304                         .dev_list = std_dev_list, \
 305                         .dev_clear = std_dev_clear, \
 306                         .config_get = config_get, \
 307                         .config_set = config_set, \
 308                         .config_list = config_list, \
 309                         .dev_open = std_serial_dev_open, \
 310                         .dev_close = std_serial_dev_close, \
 311                         .dev_acquisition_start = dev_acquisition_start, \
 312                         .dev_acquisition_stop = std_serial_dev_acquisition_stop, \
 313                         .context = NULL, \
 314                 }, \
 315                 VENDOR, MODEL, CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 316                 REQUEST, 1, NULL, VALID, PARSE, DETAILS, \
 317                 sizeof(struct CHIPSET##_info), \
 318                 NULL, INIT_STATE, FREE_STATE, \
 319                 OPEN, VALID_LEN, PARSE_LEN, \
 320                 CFG_GET, CFG_SET, CFG_LIST, ACQ_START, \
 321         }).di
 322
 323 #define DMM_CONN(ID, CHIPSET, VENDOR, MODEL, \
 324                 CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 325                 REQUEST, VALID, PARSE, DETAILS) \
 326         DMM_ENTRY(ID, CHIPSET, VENDOR, MODEL, \
 327                 CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 328                 NULL, REQUEST, VALID, PARSE, DETAILS, \
 329                 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL)
 330
 331 #define DMM(ID, CHIPSET, VENDOR, MODEL, SERIALCOMM, PACKETSIZE, TIMEOUT, \
 332                 DELAY, REQUEST, VALID, PARSE, DETAILS) \
 333         DMM_CONN(ID, CHIPSET, VENDOR, MODEL, \
 334                 NULL, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 335                 REQUEST, VALID, PARSE, DETAILS)
 336
 337 #define DMM_LEN(ID, CHIPSET, VENDOR, MODEL, \
 338                 CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 339                 INIT, FREE, OPEN, REQUEST, VALID, PARSE, DETAILS) \
 340         DMM_ENTRY(ID, CHIPSET, VENDOR, MODEL, \
 341                 CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 342                 OPEN, REQUEST, NULL, NULL, DETAILS, \
 343                 INIT, FREE, VALID, PARSE, NULL, NULL, NULL, NULL)
 344
 345 SR_REGISTER_DEV_DRIVER_LIST(serial_dmm_drivers,
 346         /*
 347          * The items are sorted by chipset first and then model name.
 348          *
 349          * This reflects the developer's perspective and is preferrable
 350          * during maintenance, as a vendor/product based sort order does
 351          * not work well for rebranded models, and from a support point
 352          * of view it's more important to identify similarities between
 353          * models and compatible devices.
 354          *
 355          * Fold marks {{{ }}} with matching braces were added, to further
 356          * speed up navigation in the long list.
 357          */
 358         /* asycii based meters {{{ */
 359         DMM(
 360                 "metrix-mx56c", asycii, "Metrix", "MX56C",
 361                 "2400/8n1", ASYCII_PACKET_SIZE, 0, 0, NULL,
 362                 sr_asycii_packet_valid, sr_asycii_parse, NULL
 363         ),
 364         /* }}} */
 365         /* bm25x based meters {{{ */
 366         DMM(
 367                 "brymen-bm25x", bm25x,
 368                 "Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
 369                 BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
 370                 sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
 371                 NULL
 372         ),
 373         /* }}} */
 374         /* bm52x based meters {{{ */
 375         DMM_CONN(
 376                 "brymen-bm52x", brymen_bm52x, "Brymen", "BM52x",
 377                 "hid/bu86x", NULL, BRYMEN_BM52X_PACKET_SIZE, 4000, 500,
 378                 sr_brymen_bm52x_packet_request,
 379                 sr_brymen_bm52x_packet_valid, sr_brymen_bm52x_parse,
 380                 NULL
 381         ),
 382         /* }}} */
 383         /* bm85x based meters {{{ */
 384         DMM_LEN(
 385                 "brymen-bm85x", brymen_bm85x, "Brymen", "BM85x",
 386                 NULL, "9600/8n1/dtr=1/rts=1",
 387                 BRYMEN_BM85x_PACKET_SIZE_MIN, 2000, 400,
 388                 NULL, NULL, /* INIT/FREE for DMM state */
 389                 brymen_bm85x_after_open, brymen_bm85x_packet_request,
 390                 brymen_bm85x_packet_valid, brymen_bm85x_parse,
 391                 NULL
 392         ),
 393         /* }}} */
 394         /* bm86x based meters {{{ */
 395         DMM_CONN(
 396                 "brymen-bm86x", brymen_bm86x, "Brymen", "BM86x",
 397                 "hid/bu86x", NULL, BRYMEN_BM86X_PACKET_SIZE, 500, 100,
 398                 sr_brymen_bm86x_packet_request,
 399                 sr_brymen_bm86x_packet_valid, sr_brymen_bm86x_parse,
 400                 NULL
 401         ),
 402         /* }}} */
 403         /* dtm0660 based meters {{{ */
 404         DMM(
 405                 "peaktech-3415", dtm0660,
 406                 "PeakTech", "3415", "2400/8n1/rts=0/dtr=1",
 407                 DTM0660_PACKET_SIZE, 0, 0, NULL,
 408                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 409         ),
 410         DMM(
 411                 "velleman-dvm4100", dtm0660,
 412                 "Velleman", "DVM4100", "2400/8n1/rts=0/dtr=1",
 413                 DTM0660_PACKET_SIZE, 0, 0, NULL,
 414                 sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
 415         ),
 416         /* }}} */
 417         /* eev121gw based meters {{{ */
 418         DMM(
 419                 "eevblog-121gw", eev121gw, "EEVblog", "121GW",
 420                 "115200/8n1", EEV121GW_PACKET_SIZE, 0, 0, NULL,
 421                 sr_eev121gw_packet_valid, sr_eev121gw_3displays_parse, NULL
 422         ),
 423         /* }}} */
 424         /* es519xx based meters {{{ */
 425         DMM(
 426                 "iso-tech-idm103n", es519xx,
 427                 "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
 428                 ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 429                 sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
 430                 NULL
 431         ),
 432         /*
 433          * Note: ES51922 and ES51986 baudrate is actually 19230. This is
 434          * "out" by .15%, and so is well within the typical 1% margin
 435          * that is considered acceptable in UART communication, and thus
 436          * should not cause an issue.
 437          *
 438          * However, using 19230 as baudrate here will not work, as most DMM
 439          * cables do not support that baudrate!
 440          */
 441         DMM(
 442                 "tenma-72-7750-ser", es519xx,
 443                 "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 444                 ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 445                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 446                 NULL
 447         ),
 448         DMM(
 449                 "uni-t-ut60g-ser", es519xx,
 450                 "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 451                 ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 452                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 453                 NULL
 454         ),
 455         DMM(
 456                 "uni-t-ut61e-ser", es519xx,
 457                 "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 458                 ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
 459                 sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
 460                 NULL
 461         ),
 462         /* }}} */
 463         /* fs9721 based meters {{{ */
 464         DMM(
 465                 "digitek-dt4000zc", fs9721,
 466                 "Digitek", "DT4000ZC", "2400/8n1/dtr=1",
 467                 FS9721_PACKET_SIZE, 0, 0, NULL,
 468                 sr_fs9721_packet_valid, sr_fs9721_parse,
 469                 sr_fs9721_10_temp_c
 470         ),
 471         DMM(
 472                 "mastech-ms8250b", fs9721,
 473                 "MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
 474                 FS9721_PACKET_SIZE, 0, 0, NULL,
 475                 sr_fs9721_packet_valid, sr_fs9721_parse,
 476                 NULL
 477         ),
 478         DMM(
 479                 "pce-pce-dm32", fs9721,
 480                 "PCE", "PCE-DM32", "2400/8n1",
 481                 FS9721_PACKET_SIZE, 0, 0, NULL,
 482                 sr_fs9721_packet_valid, sr_fs9721_parse,
 483                 sr_fs9721_01_10_temp_f_c
 484         ),
 485         DMM(
 486                 "peaktech-3330", fs9721,
 487                 "PeakTech", "3330", "2400/8n1/dtr=1",
 488                 FS9721_PACKET_SIZE, 0, 0, NULL,
 489                 sr_fs9721_packet_valid, sr_fs9721_parse,
 490                 sr_fs9721_01_10_temp_f_c
 491         ),
 492         DMM(
 493                 "tecpel-dmm-8061-ser", fs9721,
 494                 "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 495                 FS9721_PACKET_SIZE, 0, 0, NULL,
 496                 sr_fs9721_packet_valid, sr_fs9721_parse,
 497                 sr_fs9721_00_temp_c
 498         ),
 499         DMM(
 500                 "tekpower-tp4000ZC", fs9721,
 501                 "TekPower", "TP4000ZC", "2400/8n1/dtr=1",
 502                 FS9721_PACKET_SIZE, 0, 0, NULL,
 503                 sr_fs9721_packet_valid, sr_fs9721_parse,
 504                 sr_fs9721_10_temp_c
 505         ),
 506         DMM(
 507                 "tenma-72-7745-ser", fs9721,
 508                 "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 509                 FS9721_PACKET_SIZE, 0, 0, NULL,
 510                 sr_fs9721_packet_valid, sr_fs9721_parse,
 511                 sr_fs9721_00_temp_c
 512         ),
 513         DMM(
 514                 "uni-t-ut60a-ser", fs9721,
 515                 "UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 516                 FS9721_PACKET_SIZE, 0, 0, NULL,
 517                 sr_fs9721_packet_valid, sr_fs9721_parse,
 518                 NULL
 519         ),
 520         DMM(
 521                 "uni-t-ut60e-ser", fs9721,
 522                 "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 523                 FS9721_PACKET_SIZE, 0, 0, NULL,
 524                 sr_fs9721_packet_valid, sr_fs9721_parse,
 525                 sr_fs9721_00_temp_c
 526         ),
 527         DMM(
 528                 "va-va18b", fs9721,
 529                 "V&A", "VA18B", "2400/8n1",
 530                 FS9721_PACKET_SIZE, 0, 0, NULL,
 531                 sr_fs9721_packet_valid, sr_fs9721_parse,
 532                 sr_fs9721_01_temp_c
 533         ),
 534         DMM(
 535                 "va-va40b", fs9721,
 536                 "V&A", "VA40B", "2400/8n1",
 537                 FS9721_PACKET_SIZE, 0, 0, NULL,
 538                 sr_fs9721_packet_valid, sr_fs9721_parse,
 539                 sr_fs9721_max_c_min
 540         ),
 541         DMM(
 542                 "voltcraft-vc820-ser", fs9721,
 543                 "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 544                 FS9721_PACKET_SIZE, 0, 0, NULL,
 545                 sr_fs9721_packet_valid, sr_fs9721_parse,
 546                 NULL
 547         ),
 548         DMM(
 549                 "voltcraft-vc840-ser", fs9721,
 550                 "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 551                 FS9721_PACKET_SIZE, 0, 0, NULL,
 552                 sr_fs9721_packet_valid, sr_fs9721_parse,
 553                 sr_fs9721_00_temp_c
 554         ),
 555         /* }}} */
 556         /* fs9922 based meters {{{ */
 557         DMM(
 558                 "gwinstek-gdm-397", fs9922,
 559                 "GW Instek", "GDM-397", "2400/8n1/rts=0/dtr=1",
 560                 FS9922_PACKET_SIZE, 0, 0, NULL,
 561                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 562         ),
 563         DMM(
 564                 "sparkfun-70c", fs9922,
 565                 "SparkFun", "70C", "2400/8n1/rts=0/dtr=1",
 566                 FS9922_PACKET_SIZE, 0, 0, NULL,
 567                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 568         ),
 569         DMM(
 570                 "uni-t-ut61b-ser", fs9922,
 571                 "UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 572                 FS9922_PACKET_SIZE, 0, 0, NULL,
 573                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 574         ),
 575         DMM(
 576                 "uni-t-ut61c-ser", fs9922,
 577                 "UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 578                 FS9922_PACKET_SIZE, 0, 0, NULL,
 579                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 580         ),
 581         DMM(
 582                 "uni-t-ut61d-ser", fs9922,
 583                 "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 584                 FS9922_PACKET_SIZE, 0, 0, NULL,
 585                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 586         ),
 587         DMM_CONN(
 588                 "victor-dmm", fs9922, "Victor", "Victor DMMs",
 589                 "hid/victor", "2400/8n1", FS9922_PACKET_SIZE, 0, 0, NULL,
 590                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL
 591         ),
 592         DMM(
 593                 /*
 594                  * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
 595                  * the FS9922 protocol. Instead, it only sets the user-defined
 596                  * bit "z1" to indicate "diode mode" and "voltage".
 597                  */
 598                 "voltcraft-vc830-ser", fs9922,
 599                 "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 600                 FS9922_PACKET_SIZE, 0, 0, NULL,
 601                 sr_fs9922_packet_valid, sr_fs9922_parse,
 602                 &sr_fs9922_z1_diode
 603         ),
 604         /* }}} */
 605         /* m2110 based meters {{{ */
 606         DMM(
 607                 "bbcgm-2010", m2110,
 608                 "BBC Goertz Metrawatt", "M2110", "1200/7n2",
 609                 BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
 610                 sr_m2110_packet_valid, sr_m2110_parse,
 611                 NULL
 612         ),
 613         /* }}} */
 614         /* ms2115b based meters {{{ */
 615         DMM(
 616                 "mastech-ms2115b", ms2115b,
 617                 "MASTECH", "MS2115B", "1200/8n1",
 618                 MS2115B_PACKET_SIZE, 0, 0, NULL,
 619                 sr_ms2115b_packet_valid, sr_ms2115b_parse,
 620                 NULL
 621         ),
 622         /* }}} */
 623         /* ms8250d based meters {{{ */
 624         DMM(
 625                 "mastech-ms8250d", ms8250d,
 626                 "MASTECH", "MS8250D", "2400/8n1/rts=0/dtr=1",
 627                 MS8250D_PACKET_SIZE, 0, 0, NULL,
 628                 sr_ms8250d_packet_valid, sr_ms8250d_parse,
 629                 NULL
 630         ),
 631         /* }}} */
 632         /* metex14 based meters {{{ */
 633         DMM(
 634                 "mastech-mas345", metex14,
 635                 "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1",
 636                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 637                 sr_metex14_packet_valid, sr_metex14_parse,
 638                 NULL
 639         ),
 640         DMM(
 641                 "metex-m3640d", metex14,
 642                 "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1",
 643                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 644                 sr_metex14_packet_valid, sr_metex14_parse,
 645                 NULL
 646         ),
 647         DMM(
 648                 "metex-m3860m", metex14,
 649                 "Metex", "M-3860M", "9600/7n2/rts=0/dtr=1",
 650                 4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 651                 sr_metex14_4packets_valid, sr_metex14_4packets_parse,
 652                 NULL
 653         ),
 654         DMM(
 655                 "metex-m4650cr", metex14,
 656                 "Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1",
 657                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 658                 sr_metex14_packet_valid, sr_metex14_parse,
 659                 NULL
 660         ),
 661         DMM(
 662                 "metex-me21", metex14,
 663                 "Metex", "ME-21", "2400/7n2/rts=0/dtr=1",
 664                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 665                 sr_metex14_packet_valid, sr_metex14_parse,
 666                 NULL
 667         ),
 668         DMM(
 669                 "metex-me31", metex14,
 670                 "Metex", "ME-31", "600/7n2/rts=0/dtr=1",
 671                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 672                 sr_metex14_packet_valid, sr_metex14_parse,
 673                 NULL
 674         ),
 675         DMM(
 676                 "peaktech-3410", metex14,
 677                 "PeakTech", "3410", "600/7n2/rts=0/dtr=1",
 678                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 679                 sr_metex14_packet_valid, sr_metex14_parse,
 680                 NULL
 681         ),
 682         DMM(
 683                 "peaktech-4370", metex14,
 684                 "PeakTech", "4370", "1200/7n2/rts=0/dtr=1",
 685                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 686                 sr_metex14_packet_valid, sr_metex14_parse,
 687                 NULL
 688         ),
 689         DMM(
 690                 "peaktech-4390a", metex14,
 691                 "PeakTech", "4390A", "9600/7n2/rts=0/dtr=1",
 692                 4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 693                 sr_metex14_4packets_valid, sr_metex14_4packets_parse,
 694                 NULL
 695         ),
 696         DMM(
 697                 "radioshack-22-168", metex14,
 698                 "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1",
 699                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 700                 sr_metex14_packet_valid, sr_metex14_parse,
 701                 NULL
 702         ),
 703         DMM(
 704                 "radioshack-22-805", metex14,
 705                 "RadioShack", "22-805", "600/7n2/rts=0/dtr=1",
 706                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 707                 sr_metex14_packet_valid, sr_metex14_parse,
 708                 NULL
 709         ),
 710         DMM(
 711                 "voltcraft-m3650cr", metex14,
 712                 "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1",
 713                 METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
 714                 sr_metex14_packet_valid, sr_metex14_parse,
 715                 NULL
 716         ),
 717         DMM(
 718                 "voltcraft-m3650d", metex14,
 719                 "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1",
 720                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 721                 sr_metex14_packet_valid, sr_metex14_parse,
 722                 NULL
 723         ),
 724         DMM(
 725                 "voltcraft-m4650cr", metex14,
 726                 "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1",
 727                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 728                 sr_metex14_packet_valid, sr_metex14_parse,
 729                 NULL
 730         ),
 731         DMM(
 732                 "voltcraft-me42", metex14,
 733                 "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1",
 734                 METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
 735                 sr_metex14_packet_valid, sr_metex14_parse,
 736                 NULL
 737         ),
 738         /* }}} */
 739         /* rs9lcd based meters {{{ */
 740         DMM(
 741                 "radioshack-22-812", rs9lcd,
 742                 "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1",
 743                 RS9LCD_PACKET_SIZE, 0, 0, NULL,
 744                 sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
 745                 NULL
 746         ),
 747         /* }}} */
 748         /* ut71x based meters {{{ */
 749         DMM(
 750                 "tenma-72-7730-ser", ut71x,
 751                 "Tenma", "72-7730 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 752                 UT71X_PACKET_SIZE, 0, 0, NULL,
 753                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 754         ),
 755         DMM(
 756                 "tenma-72-7732-ser", ut71x,
 757                 "Tenma", "72-7732 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 758                 UT71X_PACKET_SIZE, 0, 0, NULL,
 759                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 760         ),
 761         DMM(
 762                 "tenma-72-9380a-ser", ut71x,
 763                 "Tenma", "72-9380A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 764                 UT71X_PACKET_SIZE, 0, 0, NULL,
 765                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 766         ),
 767         DMM(
 768                 "uni-t-ut71a-ser", ut71x,
 769                 "UNI-T", "UT71A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 770                 UT71X_PACKET_SIZE, 0, 0, NULL,
 771                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 772         ),
 773         DMM(
 774                 "uni-t-ut71b-ser", ut71x,
 775                 "UNI-T", "UT71B (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 776                 UT71X_PACKET_SIZE, 0, 0, NULL,
 777                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 778         ),
 779         DMM(
 780                 "uni-t-ut71c-ser", ut71x,
 781                 "UNI-T", "UT71C (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 782                 UT71X_PACKET_SIZE, 0, 0, NULL,
 783                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 784         ),
 785         DMM(
 786                 "uni-t-ut71d-ser", ut71x,
 787                 "UNI-T", "UT71D (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 788                 UT71X_PACKET_SIZE, 0, 0, NULL,
 789                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 790         ),
 791         DMM(
 792                 "uni-t-ut71e-ser", ut71x,
 793                 "UNI-T", "UT71E (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 794                 UT71X_PACKET_SIZE, 0, 0, NULL,
 795                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 796         ),
 797         DMM(
 798                 "uni-t-ut804-ser", ut71x,
 799                 "UNI-T", "UT804", "2400/7o1/rts=0/dtr=1",
 800                 UT71X_PACKET_SIZE, 0, 0, NULL,
 801                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 802         ),
 803         DMM(
 804                 "voltcraft-vc920-ser", ut71x,
 805                 "Voltcraft", "VC-920 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 806                 UT71X_PACKET_SIZE, 0, 0, NULL,
 807                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 808         ),
 809         DMM(
 810                 "voltcraft-vc940-ser", ut71x,
 811                 "Voltcraft", "VC-940 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 812                 UT71X_PACKET_SIZE, 0, 0, NULL,
 813                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 814         ),
 815         DMM(
 816                 "voltcraft-vc960-ser", ut71x,
 817                 "Voltcraft", "VC-960 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
 818                 UT71X_PACKET_SIZE, 0, 0, NULL,
 819                 sr_ut71x_packet_valid, sr_ut71x_parse, NULL
 820         ),
 821         /* }}} */
 822         /* vc870 based meters {{{ */
 823         DMM(
 824                 "voltcraft-vc870-ser", vc870,
 825                 "Voltcraft", "VC-870 (UT-D02 cable)", "9600/8n1/rts=0/dtr=1",
 826                 VC870_PACKET_SIZE, 0, 0, NULL,
 827                 sr_vc870_packet_valid, sr_vc870_parse, NULL
 828         ),
 829         /* }}} */
 830         /* vc96 based meters {{{ */
 831         DMM(
 832                 "voltcraft-vc96", vc96,
 833                 "Voltcraft", "VC-96", "1200/8n2",
 834                 VC96_PACKET_SIZE, 0, 0, NULL,
 835                 sr_vc96_packet_valid, sr_vc96_parse,
 836                 NULL
 837         ),
 838         /* }}} */
 839         /*
 840          * The list is sorted. Add new items in the respective chip's group.
 841          */
 842 );