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 <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <fcntl.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <glib.h>
  28 #include "libsigrok.h"
  29 #include "libsigrok-internal.h"
  30 #include "protocol.h"
  31
  32 static const int32_t hwopts[] = {
  33         SR_CONF_CONN,
  34         SR_CONF_SERIALCOMM,
  35 };
  36
  37 static const int32_t hwcaps[] = {
  38         SR_CONF_MULTIMETER,
  39         SR_CONF_LIMIT_SAMPLES,
  40         SR_CONF_LIMIT_MSEC,
  41         SR_CONF_CONTINUOUS,
  42 };
  43
  44 SR_PRIV struct sr_dev_driver bbcgm_m2110_driver_info;
  45 SR_PRIV struct sr_dev_driver digitek_dt4000zc_driver_info;
  46 SR_PRIV struct sr_dev_driver tekpower_tp4000zc_driver_info;
  47 SR_PRIV struct sr_dev_driver metex_me31_driver_info;
  48 SR_PRIV struct sr_dev_driver peaktech_3410_driver_info;
  49 SR_PRIV struct sr_dev_driver mastech_mas345_driver_info;
  50 SR_PRIV struct sr_dev_driver va_va18b_driver_info;
  51 SR_PRIV struct sr_dev_driver va_va40b_driver_info;
  52 SR_PRIV struct sr_dev_driver metex_m3640d_driver_info;
  53 SR_PRIV struct sr_dev_driver metex_m4650cr_driver_info;
  54 SR_PRIV struct sr_dev_driver peaktech_4370_driver_info;
  55 SR_PRIV struct sr_dev_driver pce_pce_dm32_driver_info;
  56 SR_PRIV struct sr_dev_driver radioshack_22_168_driver_info;
  57 SR_PRIV struct sr_dev_driver radioshack_22_805_driver_info;
  58 SR_PRIV struct sr_dev_driver radioshack_22_812_driver_info;
  59 SR_PRIV struct sr_dev_driver tecpel_dmm_8061_ser_driver_info;
  60 SR_PRIV struct sr_dev_driver voltcraft_m3650cr_driver_info;
  61 SR_PRIV struct sr_dev_driver voltcraft_m3650d_driver_info;
  62 SR_PRIV struct sr_dev_driver voltcraft_m4650cr_driver_info;
  63 SR_PRIV struct sr_dev_driver voltcraft_me42_driver_info;
  64 SR_PRIV struct sr_dev_driver voltcraft_vc820_ser_driver_info;
  65 SR_PRIV struct sr_dev_driver voltcraft_vc830_ser_driver_info;
  66 SR_PRIV struct sr_dev_driver voltcraft_vc840_ser_driver_info;
  67 SR_PRIV struct sr_dev_driver uni_t_ut60a_ser_driver_info;
  68 SR_PRIV struct sr_dev_driver uni_t_ut60e_ser_driver_info;
  69 SR_PRIV struct sr_dev_driver uni_t_ut60g_ser_driver_info;
  70 SR_PRIV struct sr_dev_driver uni_t_ut61b_ser_driver_info;
  71 SR_PRIV struct sr_dev_driver uni_t_ut61c_ser_driver_info;
  72 SR_PRIV struct sr_dev_driver uni_t_ut61d_ser_driver_info;
  73 SR_PRIV struct sr_dev_driver uni_t_ut61e_ser_driver_info;
  74 SR_PRIV struct sr_dev_driver iso_tech_idm103n_driver_info;
  75 SR_PRIV struct sr_dev_driver tenma_72_7745_ser_driver_info;
  76 SR_PRIV struct sr_dev_driver tenma_72_7750_ser_driver_info;
  77 SR_PRIV struct sr_dev_driver brymen_bm25x_ser_driver_info;
  78
  79 SR_PRIV struct dmm_info dmms[] = {
  80         {
  81                 "BBC Goertz Metrawatt", "M2110", "1200/7n2", 1200,
  82                 BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
  83                 sr_m2110_packet_valid, sr_m2110_parse,
  84                 NULL,
  85                 &bbcgm_m2110_driver_info, receive_data_BBCGM_M2110,
  86         },
  87         {
  88                 "Digitek", "DT4000ZC", "2400/8n1/dtr=1", 2400,
  89                 FS9721_PACKET_SIZE, 0, 0, NULL,
  90                 sr_fs9721_packet_valid, sr_fs9721_parse,
  91                 sr_fs9721_10_temp_c,
  92                 &digitek_dt4000zc_driver_info, receive_data_DIGITEK_DT4000ZC,
  93         },
  94         {
  95                 "TekPower", "TP4000ZC", "2400/8n1/dtr=1", 2400,
  96                 FS9721_PACKET_SIZE, 0, 0, NULL,
  97                 sr_fs9721_packet_valid, sr_fs9721_parse,
  98                 sr_fs9721_10_temp_c,
  99                 &tekpower_tp4000zc_driver_info, receive_data_TEKPOWER_TP4000ZC,
 100         },
 101         {
 102                 "Metex", "ME-31", "600/7n2/rts=0/dtr=1", 600,
 103                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 104                 sr_metex14_packet_valid, sr_metex14_parse,
 105                 NULL,
 106                 &metex_me31_driver_info, receive_data_METEX_ME31,
 107         },
 108         {
 109                 "Peaktech", "3410", "600/7n2/rts=0/dtr=1", 600,
 110                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 111                 sr_metex14_packet_valid, sr_metex14_parse,
 112                 NULL,
 113                 &peaktech_3410_driver_info, receive_data_PEAKTECH_3410,
 114         },
 115         {
 116                 "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1", 600,
 117                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 118                 sr_metex14_packet_valid, sr_metex14_parse,
 119                 NULL,
 120                 &mastech_mas345_driver_info, receive_data_MASTECH_MAS345,
 121         },
 122         {
 123                 "V&A", "VA18B", "2400/8n1", 2400,
 124                 FS9721_PACKET_SIZE, 0, 0, NULL,
 125                 sr_fs9721_packet_valid, sr_fs9721_parse,
 126                 sr_fs9721_01_temp_c,
 127                 &va_va18b_driver_info, receive_data_VA_VA18B,
 128         },
 129         {
 130                 "V&A", "VA40B", "2400/8n1", 2400,
 131                 FS9721_PACKET_SIZE, 0, 0, NULL,
 132                 sr_fs9721_packet_valid, sr_fs9721_parse,
 133                 sr_fs9721_max_c_min,
 134                 &va_va40b_driver_info, receive_data_VA_VA40B,
 135         },
 136         {
 137                 "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1", 1200,
 138                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 139                 sr_metex14_packet_valid, sr_metex14_parse,
 140                 NULL,
 141                 &metex_m3640d_driver_info, receive_data_METEX_M3640D,
 142         },
 143         {
 144                 "Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 145                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 146                 sr_metex14_packet_valid, sr_metex14_parse,
 147                 NULL,
 148                 &metex_m4650cr_driver_info, receive_data_METEX_M4650CR,
 149         },
 150         {
 151                 "PeakTech", "4370", "1200/7n2/rts=0/dtr=1", 1200,
 152                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 153                 sr_metex14_packet_valid, sr_metex14_parse,
 154                 NULL,
 155                 &peaktech_4370_driver_info, receive_data_PEAKTECH_4370,
 156         },
 157         {
 158                 "PCE", "PCE-DM32", "2400/8n1", 2400,
 159                 FS9721_PACKET_SIZE, 0, 0, NULL,
 160                 sr_fs9721_packet_valid, sr_fs9721_parse,
 161                 sr_fs9721_01_10_temp_f_c,
 162                 &pce_pce_dm32_driver_info, receive_data_PCE_PCE_DM32,
 163         },
 164         {
 165                 "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1", 1200,
 166                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 167                 sr_metex14_packet_valid, sr_metex14_parse,
 168                 NULL,
 169                 &radioshack_22_168_driver_info, receive_data_RADIOSHACK_22_168,
 170         },
 171         {
 172                 "RadioShack", "22-805", "600/7n2/rts=0/dtr=1", 600,
 173                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 174                 sr_metex14_packet_valid, sr_metex14_parse,
 175                 NULL,
 176                 &radioshack_22_805_driver_info, receive_data_RADIOSHACK_22_805,
 177         },
 178         {
 179                 "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1", 4800,
 180                 RS9LCD_PACKET_SIZE, 0, 0, NULL,
 181                 sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
 182                 NULL,
 183                 &radioshack_22_812_driver_info, receive_data_RADIOSHACK_22_812,
 184         },
 185         {
 186                 "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 187                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 188                 sr_fs9721_packet_valid, sr_fs9721_parse,
 189                 sr_fs9721_00_temp_c,
 190                 &tecpel_dmm_8061_ser_driver_info,
 191                 receive_data_TECPEL_DMM_8061_SER,
 192         },
 193         {
 194                 "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1", 1200,
 195                 METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
 196                 sr_metex14_packet_valid, sr_metex14_parse,
 197                 NULL,
 198                 &voltcraft_m3650cr_driver_info, receive_data_VOLTCRAFT_M3650CR,
 199         },
 200         {
 201                 "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1", 1200,
 202                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 203                 sr_metex14_packet_valid, sr_metex14_parse,
 204                 NULL,
 205                 &voltcraft_m3650d_driver_info, receive_data_VOLTCRAFT_M3650D,
 206         },
 207         {
 208                 "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
 209                 METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
 210                 sr_metex14_packet_valid, sr_metex14_parse,
 211                 NULL,
 212                 &voltcraft_m4650cr_driver_info, receive_data_VOLTCRAFT_M4650CR,
 213         },
 214         {
 215                 "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1", 600,
 216                 METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
 217                 sr_metex14_packet_valid, sr_metex14_parse,
 218                 NULL,
 219                 &voltcraft_me42_driver_info, receive_data_VOLTCRAFT_ME42,
 220         },
 221         {
 222                 "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 223                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 224                 sr_fs9721_packet_valid, sr_fs9721_parse,
 225                 NULL,
 226                 &voltcraft_vc820_ser_driver_info,
 227                 receive_data_VOLTCRAFT_VC820_SER,
 228         },
 229         {
 230                 /*
 231                  * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
 232                  * the FS9922 protocol. Instead, it only sets the user-defined
 233                  * bit "z1" to indicate "diode mode" and "voltage".
 234                  */
 235                 "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 236                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 237                 sr_fs9922_packet_valid, sr_fs9922_parse,
 238                 &sr_fs9922_z1_diode,
 239                 &voltcraft_vc830_ser_driver_info,
 240                 receive_data_VOLTCRAFT_VC830_SER,
 241         },
 242         {
 243                 "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 244                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 245                 sr_fs9721_packet_valid, sr_fs9721_parse,
 246                 sr_fs9721_00_temp_c,
 247                 &voltcraft_vc840_ser_driver_info,
 248                 receive_data_VOLTCRAFT_VC840_SER,
 249         },
 250         {
 251                 "UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 252                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 253                 sr_fs9721_packet_valid, sr_fs9721_parse,
 254                 NULL,
 255                 &uni_t_ut60a_ser_driver_info,
 256                 receive_data_UNI_T_UT60A_SER,
 257         },
 258         {
 259                 "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 260                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 261                 sr_fs9721_packet_valid, sr_fs9721_parse,
 262                 sr_fs9721_00_temp_c,
 263                 &uni_t_ut60e_ser_driver_info,
 264                 receive_data_UNI_T_UT60E_SER,
 265         },
 266         {
 267                 /* Note: ES51986 baudrate is actually 19230! */
 268                 "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 269                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 270                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 271                 NULL,
 272                 &uni_t_ut60g_ser_driver_info, receive_data_UNI_T_UT60G_SER,
 273         },
 274         {
 275                 "UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 276                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 277                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL,
 278                 &uni_t_ut61b_ser_driver_info, receive_data_UNI_T_UT61B_SER,
 279         },
 280         {
 281                 "UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 282                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 283                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL,
 284                 &uni_t_ut61c_ser_driver_info, receive_data_UNI_T_UT61C_SER,
 285         },
 286         {
 287                 "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 288                 2400, FS9922_PACKET_SIZE, 0, 0, NULL,
 289                 sr_fs9922_packet_valid, sr_fs9922_parse, NULL,
 290                 &uni_t_ut61d_ser_driver_info, receive_data_UNI_T_UT61D_SER,
 291         },
 292         {
 293                 /* Note: ES51922 baudrate is actually 19230! */
 294                 "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 295                 19200, ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
 296                 sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
 297                 NULL,
 298                 &uni_t_ut61e_ser_driver_info, receive_data_UNI_T_UT61E_SER,
 299         },
 300         {
 301                 "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
 302                 2400, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 303                 sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
 304                 NULL,
 305                 &iso_tech_idm103n_driver_info, receive_data_ISO_TECH_IDM103N,
 306         },
 307         {
 308                 "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
 309                 2400, FS9721_PACKET_SIZE, 0, 0, NULL,
 310                 sr_fs9721_packet_valid, sr_fs9721_parse,
 311                 sr_fs9721_00_temp_c,
 312                 &tenma_72_7745_ser_driver_info, receive_data_TENMA_72_7745_SER,
 313         },
 314         {
 315                 /* Note: ES51986 baudrate is actually 19230! */
 316                 "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
 317                 19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
 318                 sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
 319                 NULL,
 320                 &tenma_72_7750_ser_driver_info, receive_data_TENMA_72_7750_SER,
 321         },
 322         {
 323                 "Brymen", "BM25x (BC20X cable)", "9600/8n1/rts=1/dtr=1",
 324                 9600, BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
 325                 sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
 326                 NULL,
 327                 &brymen_bm25x_ser_driver_info, receive_data_BRYMEN_BM25X_SER,
 328         },
 329 };
 330
 331 static int dev_clear(int dmm)
 332 {
 333         return std_dev_clear(dmms[dmm].di, NULL);
 334 }
 335
 336 static int init(struct sr_context *sr_ctx, int dmm)
 337 {
 338         sr_dbg("Selected '%s' subdriver.", dmms[dmm].di->name);
 339
 340         return std_init(sr_ctx, dmms[dmm].di, LOG_PREFIX);
 341 }
 342
 343 static GSList *sdmm_scan(const char *conn, const char *serialcomm, int dmm)
 344 {
 345         struct sr_dev_inst *sdi;
 346         struct drv_context *drvc;
 347         struct dev_context *devc;
 348         struct sr_channel *ch;
 349         struct sr_serial_dev_inst *serial;
 350         GSList *devices;
 351         int dropped, ret;
 352         size_t len;
 353         uint8_t buf[128];
 354
 355         if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
 356                 return NULL;
 357
 358         if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
 359                 return NULL;
 360
 361         sr_info("Probing serial port %s.", conn);
 362
 363         drvc = dmms[dmm].di->priv;
 364         devices = NULL;
 365         serial_flush(serial);
 366
 367         /* Request a packet if the DMM requires this. */
 368         if (dmms[dmm].packet_request) {
 369                 if ((ret = dmms[dmm].packet_request(serial)) < 0) {
 370                         sr_err("Failed to request packet: %d.", ret);
 371                         return FALSE;
 372                 }
 373         }
 374
 375         /*
 376          * There's no way to get an ID from the multimeter. It just sends data
 377          * periodically (or upon request), so the best we can do is check if
 378          * the packets match the expected format.
 379          */
 380
 381         /* Let's get a bit of data and see if we can find a packet. */
 382         len = sizeof(buf);
 383         ret = serial_stream_detect(serial, buf, &len, dmms[dmm].packet_size,
 384                                    dmms[dmm].packet_valid, 3000,
 385                                    dmms[dmm].baudrate);
 386         if (ret != SR_OK)
 387                 goto scan_cleanup;
 388
 389         /*
 390          * If we dropped more than two packets worth of data, something is
 391          * wrong. We shouldn't quit however, since the dropped bytes might be
 392          * just zeroes at the beginning of the stream. Those can occur as a
 393          * combination of the nonstandard cable that ships with some devices
 394          * and the serial port or USB to serial adapter.
 395          */
 396         dropped = len - dmms[dmm].packet_size;
 397         if (dropped > 2 * dmms[dmm].packet_size)
 398                 sr_warn("Had to drop too much data.");
 399
 400         sr_info("Found device on port %s.", conn);
 401
 402         if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, dmms[dmm].vendor,
 403                                     dmms[dmm].device, NULL)))
 404                 goto scan_cleanup;
 405
 406         if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 407                 sr_err("Device context malloc failed.");
 408                 goto scan_cleanup;
 409         }
 410
 411         sdi->inst_type = SR_INST_SERIAL;
 412         sdi->conn = serial;
 413
 414         sdi->priv = devc;
 415         sdi->driver = dmms[dmm].di;
 416         if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1")))
 417                 goto scan_cleanup;
 418         sdi->channels = g_slist_append(sdi->channels, ch);
 419         drvc->instances = g_slist_append(drvc->instances, sdi);
 420         devices = g_slist_append(devices, sdi);
 421
 422 scan_cleanup:
 423         serial_close(serial);
 424
 425         return devices;
 426 }
 427
 428 static GSList *scan(GSList *options, int dmm)
 429 {
 430         struct sr_config *src;
 431         GSList *l, *devices;
 432         const char *conn, *serialcomm;
 433
 434         conn = serialcomm = NULL;
 435         for (l = options; l; l = l->next) {
 436                 src = l->data;
 437                 switch (src->key) {
 438                 case SR_CONF_CONN:
 439                         conn = g_variant_get_string(src->data, NULL);
 440                         break;
 441                 case SR_CONF_SERIALCOMM:
 442                         serialcomm = g_variant_get_string(src->data, NULL);
 443                         break;
 444                 }
 445         }
 446         if (!conn)
 447                 return NULL;
 448
 449         if (serialcomm) {
 450                 /* Use the provided comm specs. */
 451                 devices = sdmm_scan(conn, serialcomm, dmm);
 452         } else {
 453                 /* Try the default. */
 454                 devices = sdmm_scan(conn, dmms[dmm].conn, dmm);
 455         }
 456
 457         return devices;
 458 }
 459
 460 static GSList *dev_list(int dmm)
 461 {
 462         return ((struct drv_context *)(dmms[dmm].di->priv))->instances;
 463 }
 464
 465 static int cleanup(int dmm)
 466 {
 467         return dev_clear(dmm);
 468 }
 469
 470 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
 471                 const struct sr_channel_group *cg)
 472 {
 473         struct dev_context *devc;
 474
 475         (void)cg;
 476
 477         if (sdi->status != SR_ST_ACTIVE)
 478                 return SR_ERR_DEV_CLOSED;
 479
 480         if (!(devc = sdi->priv)) {
 481                 sr_err("sdi->priv was NULL.");
 482                 return SR_ERR_BUG;
 483         }
 484
 485         switch (id) {
 486         case SR_CONF_LIMIT_SAMPLES:
 487                 devc->limit_samples = g_variant_get_uint64(data);
 488                 sr_dbg("Setting sample limit to %" PRIu64 ".",
 489                        devc->limit_samples);
 490                 break;
 491         case SR_CONF_LIMIT_MSEC:
 492                 devc->limit_msec = g_variant_get_uint64(data);
 493                 sr_dbg("Setting time limit to %" PRIu64 "ms.",
 494                        devc->limit_msec);
 495                 break;
 496         default:
 497                 return SR_ERR_NA;
 498         }
 499
 500         return SR_OK;
 501 }
 502
 503 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
 504                 const struct sr_channel_group *cg)
 505 {
 506         (void)sdi;
 507         (void)cg;
 508
 509         switch (key) {
 510         case SR_CONF_SCAN_OPTIONS:
 511                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 512                                 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
 513                 break;
 514         case SR_CONF_DEVICE_OPTIONS:
 515                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 516                                 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
 517                 break;
 518         default:
 519                 return SR_ERR_NA;
 520         }
 521
 522         return SR_OK;
 523 }
 524
 525 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
 526                                     void *cb_data, int dmm)
 527 {
 528         struct dev_context *devc;
 529         struct sr_serial_dev_inst *serial;
 530
 531         if (sdi->status != SR_ST_ACTIVE)
 532                 return SR_ERR_DEV_CLOSED;
 533
 534         if (!(devc = sdi->priv)) {
 535                 sr_err("sdi->priv was NULL.");
 536                 return SR_ERR_BUG;
 537         }
 538
 539         devc->cb_data = cb_data;
 540
 541         /*
 542          * Reset the number of samples to take. If we've already collected our
 543          * quota, but we start a new session, and don't reset this, we'll just
 544          * quit without acquiring any new samples.
 545          */
 546         devc->num_samples = 0;
 547         devc->starttime = g_get_monotonic_time();
 548
 549         /* Send header packet to the session bus. */
 550         std_session_send_df_header(cb_data, LOG_PREFIX);
 551
 552         /* Poll every 50ms, or whenever some data comes in. */
 553         serial = sdi->conn;
 554         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 555                       dmms[dmm].receive_data, (void *)sdi);
 556
 557         return SR_OK;
 558 }
 559
 560 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 561 {
 562         return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
 563                         sdi->conn, LOG_PREFIX);
 564 }
 565
 566 /* Driver-specific API function wrappers */
 567 #define HW_INIT(X) \
 568 static int init_##X(struct sr_context *sr_ctx) { return init(sr_ctx, X); }
 569 #define HW_CLEANUP(X) \
 570 static int cleanup_##X(void) { return cleanup(X); }
 571 #define HW_SCAN(X) \
 572 static GSList *scan_##X(GSList *options) { return scan(options, X); }
 573 #define HW_DEV_LIST(X) \
 574 static GSList *dev_list_##X(void) { return dev_list(X); }
 575 #define HW_DEV_CLEAR(X) \
 576 static int dev_clear_##X(void) { return dev_clear(X); }
 577 #define HW_DEV_ACQUISITION_START(X) \
 578 static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
 579 void *cb_data) { return dev_acquisition_start(sdi, cb_data, X); }
 580
 581 /* Driver structs and API function wrappers */
 582 #define DRV(ID, ID_UPPER, NAME, LONGNAME) \
 583 HW_INIT(ID_UPPER) \
 584 HW_CLEANUP(ID_UPPER) \
 585 HW_SCAN(ID_UPPER) \
 586 HW_DEV_LIST(ID_UPPER) \
 587 HW_DEV_CLEAR(ID_UPPER) \
 588 HW_DEV_ACQUISITION_START(ID_UPPER) \
 589 SR_PRIV struct sr_dev_driver ID##_driver_info = { \
 590         .name = NAME, \
 591         .longname = LONGNAME, \
 592         .api_version = 1, \
 593         .init = init_##ID_UPPER, \
 594         .cleanup = cleanup_##ID_UPPER, \
 595         .scan = scan_##ID_UPPER, \
 596         .dev_list = dev_list_##ID_UPPER, \
 597         .dev_clear = dev_clear_##ID_UPPER, \
 598         .config_get = NULL, \
 599         .config_set = config_set, \
 600         .config_list = config_list, \
 601         .dev_open = std_serial_dev_open, \
 602         .dev_close = std_serial_dev_close, \
 603         .dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
 604         .dev_acquisition_stop = dev_acquisition_stop, \
 605         .priv = NULL, \
 606 };
 607
 608 DRV(bbcgm_m2110, BBCGM_M2110, "bbcgm-m2110", "BBC Goertz Metrawatt M2110")
 609 DRV(digitek_dt4000zc, DIGITEK_DT4000ZC, "digitek-dt4000zc", "Digitek DT4000ZC")
 610 DRV(tekpower_tp4000zc, TEKPOWER_TP4000ZC, "tekpower-tp4000zc", "TekPower TP4000ZC")
 611 DRV(metex_me31, METEX_ME31, "metex-me31", "Metex ME-31")
 612 DRV(peaktech_3410, PEAKTECH_3410, "peaktech-3410", "PeakTech 3410")
 613 DRV(mastech_mas345, MASTECH_MAS345, "mastech-mas345", "MASTECH MAS345")
 614 DRV(va_va18b, VA_VA18B, "va-va18b", "V&A VA18B")
 615 DRV(va_va40b, VA_VA40B, "va-va40b", "V&A VA40B")
 616 DRV(metex_m3640d, METEX_M3640D, "metex-m3640d", "Metex M-3640D")
 617 DRV(metex_m4650cr, METEX_M4650CR, "metex-m4650cr", "Metex M-4650CR")
 618 DRV(peaktech_4370, PEAKTECH_4370, "peaktech-4370", "PeakTech 4370")
 619 DRV(pce_pce_dm32, PCE_PCE_DM32, "pce-pce-dm32", "PCE PCE-DM32")
 620 DRV(radioshack_22_168, RADIOSHACK_22_168, "radioshack-22-168", "RadioShack 22-168")
 621 DRV(radioshack_22_805, RADIOSHACK_22_805, "radioshack-22-805", "RadioShack 22-805")
 622 DRV(radioshack_22_812, RADIOSHACK_22_812, "radioshack-22-812", "RadioShack 22-812")
 623 DRV(tecpel_dmm_8061_ser, TECPEL_DMM_8061_SER, "tecpel-dmm-8061-ser", "Tecpel DMM-8061 (UT-D02 cable)")
 624 DRV(voltcraft_m3650cr, VOLTCRAFT_M3650CR, "voltcraft-m3650cr", "Voltcraft M-3650CR")
 625 DRV(voltcraft_m3650d, VOLTCRAFT_M3650D, "voltcraft-m3650d", "Voltcraft M-3650D")
 626 DRV(voltcraft_m4650cr, VOLTCRAFT_M4650CR, "voltcraft-m4650cr", "Voltcraft M-4650CR")
 627 DRV(voltcraft_me42, VOLTCRAFT_ME42, "voltcraft-me42", "Voltcraft ME-42")
 628 DRV(voltcraft_vc820_ser, VOLTCRAFT_VC820_SER, "voltcraft-vc820-ser", "Voltcraft VC-820 (UT-D02 cable)")
 629 DRV(voltcraft_vc830_ser, VOLTCRAFT_VC830_SER, "voltcraft-vc830-ser", "Voltcraft VC-830 (UT-D02 cable)")
 630 DRV(voltcraft_vc840_ser, VOLTCRAFT_VC840_SER, "voltcraft-vc840-ser", "Voltcraft VC-840 (UT-D02 cable)")
 631 DRV(uni_t_ut60a_ser, UNI_T_UT60A_SER, "uni-t-ut60a-ser", "UNI-T UT60A (UT-D02 cable)")
 632 DRV(uni_t_ut60e_ser, UNI_T_UT60E_SER, "uni-t-ut60e-ser", "UNI-T UT60E (UT-D02 cable)")
 633 DRV(uni_t_ut60g_ser, UNI_T_UT60G_SER, "uni-t-ut60g-ser", "UNI-T UT60G (UT-D02 cable)")
 634 DRV(uni_t_ut61b_ser, UNI_T_UT61B_SER, "uni-t-ut61b-ser", "UNI-T UT61B (UT-D02 cable)")
 635 DRV(uni_t_ut61c_ser, UNI_T_UT61C_SER, "uni-t-ut61c-ser", "UNI-T UT61C (UT-D02 cable)")
 636 DRV(uni_t_ut61d_ser, UNI_T_UT61D_SER, "uni-t-ut61d-ser", "UNI-T UT61D (UT-D02 cable)")
 637 DRV(uni_t_ut61e_ser, UNI_T_UT61E_SER, "uni-t-ut61e-ser", "UNI-T UT61E (UT-D02 cable)")
 638 DRV(iso_tech_idm103n, ISO_TECH_IDM103N, "iso-tech-idm103n", "ISO-TECH IDM103N")
 639 DRV(tenma_72_7745_ser, TENMA_72_7745_SER, "tenma-72-7745-ser", "Tenma 72-7745 (UT-D02 cable)")
 640 DRV(tenma_72_7750_ser, TENMA_72_7750_SER, "tenma-72-7750-ser", "Tenma 72-7750 (UT-D02 cable)")
 641 DRV(brymen_bm25x_ser, BRYMEN_BM25X_SER, "brymen-bm25x-ser", "Brymen BM25x (BC20X cable)")