src/hardware/hameg-hmo/protocol.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com>
   5  * Copyright (C) 2018 Guido Trentalancia <guido@trentalancia.com>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22 #include <math.h>
  23 #include <stdlib.h>
  24 #include "scpi.h"
  25 #include "protocol.h"
  26
  27 SR_PRIV void hmo_queue_logic_data(struct dev_context *devc,
  28                                   size_t group, GByteArray *pod_data);
  29 SR_PRIV void hmo_send_logic_packet(struct sr_dev_inst *sdi,
  30                                    struct dev_context *devc);
  31 SR_PRIV void hmo_cleanup_logic_data(struct dev_context *devc);
  32
  33 static const char *hameg_scpi_dialect[] = {
  34         [SCPI_CMD_GET_DIG_DATA]               = ":FORM UINT,8;:POD%d:DATA?",
  35         [SCPI_CMD_GET_TIMEBASE]               = ":TIM:SCAL?",
  36         [SCPI_CMD_SET_TIMEBASE]               = ":TIM:SCAL %s",
  37         [SCPI_CMD_GET_HORIZONTAL_DIV]         = ":TIM:DIV?",
  38         [SCPI_CMD_GET_COUPLING]               = ":CHAN%d:COUP?",
  39         [SCPI_CMD_SET_COUPLING]               = ":CHAN%d:COUP %s",
  40         [SCPI_CMD_GET_SAMPLE_RATE]            = ":ACQ:SRAT?",
  41         [SCPI_CMD_GET_ANALOG_DATA]            = ":FORM:BORD %s;" \
  42                                                 ":FORM REAL,32;:CHAN%d:DATA?",
  43         [SCPI_CMD_GET_VERTICAL_SCALE]         = ":CHAN%d:SCAL?",
  44         [SCPI_CMD_SET_VERTICAL_SCALE]         = ":CHAN%d:SCAL %s",
  45         [SCPI_CMD_GET_DIG_POD_STATE]          = ":POD%d:STAT?",
  46         [SCPI_CMD_SET_DIG_POD_STATE]          = ":POD%d:STAT %d",
  47         [SCPI_CMD_GET_TRIGGER_SOURCE]         = ":TRIG:A:SOUR?",
  48         [SCPI_CMD_SET_TRIGGER_SOURCE]         = ":TRIG:A:SOUR %s",
  49         [SCPI_CMD_GET_TRIGGER_SLOPE]          = ":TRIG:A:EDGE:SLOP?",
  50         [SCPI_CMD_SET_TRIGGER_SLOPE]          = ":TRIG:A:TYPE EDGE;:TRIG:A:EDGE:SLOP %s",
  51         [SCPI_CMD_GET_TRIGGER_PATTERN]        = ":TRIG:A:PATT:SOUR?",
  52         [SCPI_CMD_SET_TRIGGER_PATTERN]        = ":TRIG:A:TYPE LOGIC;" \
  53                                                 ":TRIG:A:PATT:FUNC AND;" \
  54                                                 ":TRIG:A:PATT:COND \"TRUE\";" \
  55                                                 ":TRIG:A:PATT:MODE OFF;" \
  56                                                 ":TRIG:A:PATT:SOUR \"%s\"",
  57         [SCPI_CMD_GET_HIGH_RESOLUTION]        = ":ACQ:HRES?",
  58         [SCPI_CMD_SET_HIGH_RESOLUTION]        = ":ACQ:HRES %s",
  59         [SCPI_CMD_GET_PEAK_DETECTION]         = ":ACQ:PEAK?",
  60         [SCPI_CMD_SET_PEAK_DETECTION]         = ":ACQ:PEAK %s",
  61         [SCPI_CMD_GET_DIG_CHAN_STATE]         = ":LOG%d:STAT?",
  62         [SCPI_CMD_SET_DIG_CHAN_STATE]         = ":LOG%d:STAT %d",
  63         [SCPI_CMD_GET_VERTICAL_OFFSET]        = ":CHAN%d:POS?",
  64         [SCPI_CMD_GET_HORIZ_TRIGGERPOS]       = ":TIM:POS?",
  65         [SCPI_CMD_SET_HORIZ_TRIGGERPOS]       = ":TIM:POS %s",
  66         [SCPI_CMD_GET_ANALOG_CHAN_STATE]      = ":CHAN%d:STAT?",
  67         [SCPI_CMD_SET_ANALOG_CHAN_STATE]      = ":CHAN%d:STAT %d",
  68         [SCPI_CMD_GET_PROBE_UNIT]             = ":PROB%d:SET:ATT:UNIT?",
  69         [SCPI_CMD_GET_DIG_POD_THRESHOLD]      = ":POD%d:THR?",
  70         [SCPI_CMD_SET_DIG_POD_THRESHOLD]      = ":POD%d:THR %s",
  71         [SCPI_CMD_GET_DIG_POD_USER_THRESHOLD] = ":POD%d:THR:UDL%d?",
  72         [SCPI_CMD_SET_DIG_POD_USER_THRESHOLD] = ":POD%d:THR:UDL%d %s",
  73 };
  74
  75 static const char *rohde_schwarz_log_not_pod_scpi_dialect[] = {
  76         [SCPI_CMD_GET_DIG_DATA]               = ":FORM UINT,8;:LOG%d:DATA?",
  77         [SCPI_CMD_GET_TIMEBASE]               = ":TIM:SCAL?",
  78         [SCPI_CMD_SET_TIMEBASE]               = ":TIM:SCAL %s",
  79         [SCPI_CMD_GET_HORIZONTAL_DIV]         = ":TIM:DIV?",
  80         [SCPI_CMD_GET_COUPLING]               = ":CHAN%d:COUP?",
  81         [SCPI_CMD_SET_COUPLING]               = ":CHAN%d:COUP %s",
  82         [SCPI_CMD_GET_SAMPLE_RATE]            = ":ACQ:SRAT?",
  83         [SCPI_CMD_GET_ANALOG_DATA]            = ":FORM:BORD %s;" \
  84                                                 ":FORM REAL,32;:CHAN%d:DATA?",
  85         [SCPI_CMD_GET_VERTICAL_SCALE]         = ":CHAN%d:SCAL?",
  86         [SCPI_CMD_SET_VERTICAL_SCALE]         = ":CHAN%d:SCAL %s",
  87         [SCPI_CMD_GET_DIG_POD_STATE]          = ":LOG%d:STAT?",
  88         [SCPI_CMD_SET_DIG_POD_STATE]          = ":LOG%d:STAT %d",
  89         [SCPI_CMD_GET_TRIGGER_SOURCE]         = ":TRIG:A:SOUR?",
  90         [SCPI_CMD_SET_TRIGGER_SOURCE]         = ":TRIG:A:SOUR %s",
  91         [SCPI_CMD_GET_TRIGGER_SLOPE]          = ":TRIG:A:EDGE:SLOP?",
  92         [SCPI_CMD_SET_TRIGGER_SLOPE]          = ":TRIG:A:TYPE EDGE;:TRIG:A:EDGE:SLOP %s",
  93         [SCPI_CMD_GET_TRIGGER_PATTERN]        = ":TRIG:A:PATT:SOUR?",
  94         [SCPI_CMD_SET_TRIGGER_PATTERN]        = ":TRIG:A:TYPE LOGIC;" \
  95                                                 ":TRIG:A:PATT:FUNC AND;" \
  96                                                 ":TRIG:A:PATT:COND \"TRUE\";" \
  97                                                 ":TRIG:A:PATT:MODE OFF;" \
  98                                                 ":TRIG:A:PATT:SOUR \"%s\"",
  99         [SCPI_CMD_GET_HIGH_RESOLUTION]        = ":ACQ:HRES?",
 100         [SCPI_CMD_SET_HIGH_RESOLUTION]        = ":ACQ:HRES %s",
 101         [SCPI_CMD_GET_PEAK_DETECTION]         = ":ACQ:PEAK?",
 102         [SCPI_CMD_SET_PEAK_DETECTION]         = ":ACQ:PEAK %s",
 103         [SCPI_CMD_GET_DIG_CHAN_STATE]         = ":LOG%d:STAT?",
 104         [SCPI_CMD_SET_DIG_CHAN_STATE]         = ":LOG%d:STAT %d",
 105         [SCPI_CMD_GET_VERTICAL_OFFSET]        = ":CHAN%d:POS?", /* Might not be supported on RTB200x... */
 106         [SCPI_CMD_GET_HORIZ_TRIGGERPOS]       = ":TIM:POS?",
 107         [SCPI_CMD_SET_HORIZ_TRIGGERPOS]       = ":TIM:POS %s",
 108         [SCPI_CMD_GET_ANALOG_CHAN_STATE]      = ":CHAN%d:STAT?",
 109         [SCPI_CMD_SET_ANALOG_CHAN_STATE]      = ":CHAN%d:STAT %d",
 110         [SCPI_CMD_GET_PROBE_UNIT]             = ":PROB%d:SET:ATT:UNIT?",
 111         [SCPI_CMD_GET_DIG_POD_THRESHOLD]      = ":DIG%d:TECH?",
 112         [SCPI_CMD_SET_DIG_POD_THRESHOLD]      = ":DIG%d:TECH %s",
 113         [SCPI_CMD_GET_DIG_POD_USER_THRESHOLD] = ":DIG%d:THR?",
 114         [SCPI_CMD_SET_DIG_POD_USER_THRESHOLD] = ":DIG%d:THR %s",
 115 };
 116
 117 static const uint32_t devopts[] = {
 118         SR_CONF_OSCILLOSCOPE,
 119         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
 120         SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
 121         SR_CONF_SAMPLERATE | SR_CONF_GET,
 122         SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 123         SR_CONF_NUM_HDIV | SR_CONF_GET,
 124         SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
 125         SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 126         SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 127         SR_CONF_TRIGGER_PATTERN | SR_CONF_GET | SR_CONF_SET,
 128         SR_CONF_HIGH_RESOLUTION | SR_CONF_GET | SR_CONF_SET,
 129         SR_CONF_PEAK_DETECTION | SR_CONF_GET | SR_CONF_SET,
 130 };
 131
 132 static const uint32_t devopts_cg_analog[] = {
 133         SR_CONF_NUM_VDIV | SR_CONF_GET,
 134         SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 135         SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 136 };
 137
 138 static const uint32_t devopts_cg_digital[] = {
 139         SR_CONF_LOGIC_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 140         SR_CONF_LOGIC_THRESHOLD_CUSTOM | SR_CONF_GET | SR_CONF_SET,
 141 };
 142
 143 static const char *coupling_options[] = {
 144         "AC",  // AC with 50 Ohm termination (152x, 202x, 30xx, 1202)
 145         "ACL", // AC with 1 MOhm termination
 146         "DC",  // DC with 50 Ohm termination
 147         "DCL", // DC with 1 MOhm termination
 148         "GND",
 149 };
 150
 151 static const char *coupling_options_rtb200x[] = {
 152         "ACL", // AC with 1 MOhm termination
 153         "DCL", // DC with 1 MOhm termination
 154         "GND",
 155 };
 156
 157 static const char *coupling_options_rtm300x[] = {
 158         "ACL", // AC with 1 MOhm termination
 159         "DC",  // DC with 50 Ohm termination
 160         "DCL", // DC with 1 MOhm termination
 161         "GND",
 162 };
 163
 164 static const char *scope_trigger_slopes[] = {
 165         "POS",
 166         "NEG",
 167         "EITH",
 168 };
 169
 170 /* Predefined logic thresholds. */
 171 static const char *logic_threshold[] = {
 172         "TTL",
 173         "ECL",
 174         "CMOS",
 175         "USER1",
 176         "USER2", // overwritten by logic_threshold_custom, use USER1 for permanent setting
 177 };
 178
 179 static const char *logic_threshold_rtb200x_rtm300x[] = {
 180         "TTL",
 181         "ECL",
 182         "CMOS",
 183         "MAN", // overwritten by logic_threshold_custom
 184 };
 185
 186 /* This might need updates whenever logic_threshold* above change. */
 187 #define MAX_NUM_LOGIC_THRESHOLD_ENTRIES ARRAY_SIZE(logic_threshold)
 188
 189 /* RTC1002, HMO Compact2 and HMO1002/HMO1202 */
 190 static const char *an2_dig8_trigger_sources[] = {
 191         "CH1", "CH2",
 192         "LINE", "EXT", "PATT", "BUS1", "BUS2",
 193         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 194 };
 195
 196 /* HMO3xx2 */
 197 static const char *an2_dig16_trigger_sources[] = {
 198         "CH1", "CH2",
 199         "LINE", "EXT", "PATT", "BUS1", "BUS2",
 200         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 201         "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 202 };
 203
 204 /* RTB2002 and RTM3002 */
 205 static const char *an2_dig16_sbus_trigger_sources[] = {
 206         "CH1", "CH2",
 207         "LINE", "EXT", "PATT", "SBUS1", "SBUS2",
 208         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 209         "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 210 };
 211
 212 /* HMO Compact4 */
 213 static const char *an4_dig8_trigger_sources[] = {
 214         "CH1", "CH2", "CH3", "CH4",
 215         "LINE", "EXT", "PATT", "BUS1", "BUS2",
 216         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 217 };
 218
 219 /* HMO3xx4 and HMO2524 */
 220 static const char *an4_dig16_trigger_sources[] = {
 221         "CH1", "CH2", "CH3", "CH4",
 222         "LINE", "EXT", "PATT", "BUS1", "BUS2",
 223         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 224         "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 225 };
 226
 227 /* RTB2004, RTM3004 and RTA4004 */
 228 static const char *an4_dig16_sbus_trigger_sources[] = {
 229         "CH1", "CH2", "CH3", "CH4",
 230         "LINE", "EXT", "PATT", "SBUS1", "SBUS2",
 231         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 232         "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 233 };
 234
 235 static const uint64_t timebases[][2] = {
 236         /* nanoseconds */
 237         { 1, 1000000000 },
 238         { 2, 1000000000 },
 239         { 5, 1000000000 },
 240         { 10, 1000000000 },
 241         { 20, 1000000000 },
 242         { 50, 1000000000 },
 243         { 100, 1000000000 },
 244         { 200, 1000000000 },
 245         { 500, 1000000000 },
 246         /* microseconds */
 247         { 1, 1000000 },
 248         { 2, 1000000 },
 249         { 5, 1000000 },
 250         { 10, 1000000 },
 251         { 20, 1000000 },
 252         { 50, 1000000 },
 253         { 100, 1000000 },
 254         { 200, 1000000 },
 255         { 500, 1000000 },
 256         /* milliseconds */
 257         { 1, 1000 },
 258         { 2, 1000 },
 259         { 5, 1000 },
 260         { 10, 1000 },
 261         { 20, 1000 },
 262         { 50, 1000 },
 263         { 100, 1000 },
 264         { 200, 1000 },
 265         { 500, 1000 },
 266         /* seconds */
 267         { 1, 1 },
 268         { 2, 1 },
 269         { 5, 1 },
 270         { 10, 1 },
 271         { 20, 1 },
 272         { 50, 1 },
 273 };
 274
 275 /* HMO Compact series (HMO722/724/1022/1024/1522/1524/2022/2024) do
 276  * not support 1 ns timebase setting.
 277  */
 278 static const uint64_t timebases_hmo_compact[][2] = {
 279         /* nanoseconds */
 280         { 2, 1000000000 },
 281         { 5, 1000000000 },
 282         { 10, 1000000000 },
 283         { 20, 1000000000 },
 284         { 50, 1000000000 },
 285         { 100, 1000000000 },
 286         { 200, 1000000000 },
 287         { 500, 1000000000 },
 288         /* microseconds */
 289         { 1, 1000000 },
 290         { 2, 1000000 },
 291         { 5, 1000000 },
 292         { 10, 1000000 },
 293         { 20, 1000000 },
 294         { 50, 1000000 },
 295         { 100, 1000000 },
 296         { 200, 1000000 },
 297         { 500, 1000000 },
 298         /* milliseconds */
 299         { 1, 1000 },
 300         { 2, 1000 },
 301         { 5, 1000 },
 302         { 10, 1000 },
 303         { 20, 1000 },
 304         { 50, 1000 },
 305         { 100, 1000 },
 306         { 200, 1000 },
 307         { 500, 1000 },
 308         /* seconds */
 309         { 1, 1 },
 310         { 2, 1 },
 311         { 5, 1 },
 312         { 10, 1 },
 313         { 20, 1 },
 314         { 50, 1 },
 315 };
 316
 317 static const uint64_t vdivs[][2] = {
 318         /* millivolts */
 319         { 1, 1000 },
 320         { 2, 1000 },
 321         { 5, 1000 },
 322         { 10, 1000 },
 323         { 20, 1000 },
 324         { 50, 1000 },
 325         { 100, 1000 },
 326         { 200, 1000 },
 327         { 500, 1000 },
 328         /* volts */
 329         { 1, 1 },
 330         { 2, 1 },
 331         { 5, 1 },
 332         { 10, 1 },
 333 };
 334
 335 static const char *scope_analog_channel_names[] = {
 336         "CH1", "CH2", "CH3", "CH4",
 337 };
 338
 339 static const char *scope_digital_channel_names[] = {
 340         "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 341         "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 342 };
 343
 344 static struct scope_config scope_models[] = {
 345         {
 346                 /* HMO Compact2: HMO722/1022/1522/2022 support only 8 digital channels. */
 347                 .name = {"HMO722", "HMO1022", "HMO1522", "HMO2022", NULL},
 348                 .analog_channels = 2,
 349                 .digital_channels = 8,
 350
 351                 .analog_names = &scope_analog_channel_names,
 352                 .digital_names = &scope_digital_channel_names,
 353
 354                 .devopts = &devopts,
 355                 .num_devopts = ARRAY_SIZE(devopts),
 356
 357                 .devopts_cg_analog = &devopts_cg_analog,
 358                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 359
 360                 .devopts_cg_digital = &devopts_cg_digital,
 361                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 362
 363                 .coupling_options = &coupling_options,
 364                 .num_coupling_options = ARRAY_SIZE(coupling_options),
 365
 366                 .logic_threshold = &logic_threshold,
 367                 .num_logic_threshold = ARRAY_SIZE(logic_threshold),
 368                 .logic_threshold_for_pod = TRUE,
 369
 370                 .trigger_sources = &an2_dig8_trigger_sources,
 371                 .num_trigger_sources = ARRAY_SIZE(an2_dig8_trigger_sources),
 372
 373                 .trigger_slopes = &scope_trigger_slopes,
 374                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 375
 376                 .timebases = &timebases_hmo_compact,
 377                 .num_timebases = ARRAY_SIZE(timebases_hmo_compact),
 378
 379                 .vdivs = &vdivs,
 380                 .num_vdivs = ARRAY_SIZE(vdivs),
 381
 382                 .num_ydivs = 8,
 383
 384                 .scpi_dialect = &hameg_scpi_dialect,
 385         },
 386         {
 387                 /* RTC1002 and HMO1002/HMO1202 support only 8 digital channels. */
 388                 .name = {"RTC1002", "HMO1002", "HMO1202", NULL},
 389                 .analog_channels = 2,
 390                 .digital_channels = 8,
 391
 392                 .analog_names = &scope_analog_channel_names,
 393                 .digital_names = &scope_digital_channel_names,
 394
 395                 .devopts = &devopts,
 396                 .num_devopts = ARRAY_SIZE(devopts),
 397
 398                 .devopts_cg_analog = &devopts_cg_analog,
 399                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 400
 401                 .devopts_cg_digital = &devopts_cg_digital,
 402                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 403
 404                 .coupling_options = &coupling_options,
 405                 .num_coupling_options = ARRAY_SIZE(coupling_options),
 406
 407                 .logic_threshold = &logic_threshold,
 408                 .num_logic_threshold = ARRAY_SIZE(logic_threshold),
 409                 .logic_threshold_for_pod = TRUE,
 410
 411                 .trigger_sources = &an2_dig8_trigger_sources,
 412                 .num_trigger_sources = ARRAY_SIZE(an2_dig8_trigger_sources),
 413
 414                 .trigger_slopes = &scope_trigger_slopes,
 415                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 416
 417                 .timebases = &timebases,
 418                 .num_timebases = ARRAY_SIZE(timebases),
 419
 420                 .vdivs = &vdivs,
 421                 .num_vdivs = ARRAY_SIZE(vdivs),
 422
 423                 .num_ydivs = 8,
 424
 425                 .scpi_dialect = &hameg_scpi_dialect,
 426         },
 427         {
 428                 /* HMO3032/3042/3052/3522 support 16 digital channels. */
 429                 .name = {"HMO3032", "HMO3042", "HMO3052", "HMO3522", NULL},
 430                 .analog_channels = 2,
 431                 .digital_channels = 16,
 432
 433                 .analog_names = &scope_analog_channel_names,
 434                 .digital_names = &scope_digital_channel_names,
 435
 436                 .devopts = &devopts,
 437                 .num_devopts = ARRAY_SIZE(devopts),
 438
 439                 .devopts_cg_analog = &devopts_cg_analog,
 440                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 441
 442                 .devopts_cg_digital = &devopts_cg_digital,
 443                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 444
 445                 .coupling_options = &coupling_options,
 446                 .num_coupling_options = ARRAY_SIZE(coupling_options),
 447
 448                 .logic_threshold = &logic_threshold,
 449                 .num_logic_threshold = ARRAY_SIZE(logic_threshold),
 450                 .logic_threshold_for_pod = TRUE,
 451
 452                 .trigger_sources = &an2_dig16_trigger_sources,
 453                 .num_trigger_sources = ARRAY_SIZE(an2_dig16_trigger_sources),
 454
 455                 .trigger_slopes = &scope_trigger_slopes,
 456                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 457
 458                 .timebases = &timebases,
 459                 .num_timebases = ARRAY_SIZE(timebases),
 460
 461                 .vdivs = &vdivs,
 462                 .num_vdivs = ARRAY_SIZE(vdivs),
 463
 464                 .num_ydivs = 8,
 465
 466                 .scpi_dialect = &hameg_scpi_dialect,
 467         },
 468         {
 469                 /* HMO Compact4: HMO724/1024/1524/2024 support only 8 digital channels. */
 470                 .name = {"HMO724", "HMO1024", "HMO1524", "HMO2024", NULL},
 471                 .analog_channels = 4,
 472                 .digital_channels = 8,
 473
 474                 .analog_names = &scope_analog_channel_names,
 475                 .digital_names = &scope_digital_channel_names,
 476
 477                 .devopts = &devopts,
 478                 .num_devopts = ARRAY_SIZE(devopts),
 479
 480                 .devopts_cg_analog = &devopts_cg_analog,
 481                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 482
 483                 .devopts_cg_digital = &devopts_cg_digital,
 484                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 485
 486                 .coupling_options = &coupling_options,
 487                 .num_coupling_options = ARRAY_SIZE(coupling_options),
 488
 489                 .logic_threshold = &logic_threshold,
 490                 .num_logic_threshold = ARRAY_SIZE(logic_threshold),
 491                 .logic_threshold_for_pod = TRUE,
 492
 493                 .trigger_sources = &an4_dig8_trigger_sources,
 494                 .num_trigger_sources = ARRAY_SIZE(an4_dig8_trigger_sources),
 495
 496                 .trigger_slopes = &scope_trigger_slopes,
 497                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 498
 499                 .timebases = &timebases_hmo_compact,
 500                 .num_timebases = ARRAY_SIZE(timebases_hmo_compact),
 501
 502                 .vdivs = &vdivs,
 503                 .num_vdivs = ARRAY_SIZE(vdivs),
 504
 505                 .num_ydivs = 8,
 506
 507                 .scpi_dialect = &hameg_scpi_dialect,
 508         },
 509         {
 510                 .name = {"HMO2524", "HMO3034", "HMO3044", "HMO3054", "HMO3524", NULL},
 511                 .analog_channels = 4,
 512                 .digital_channels = 16,
 513
 514                 .analog_names = &scope_analog_channel_names,
 515                 .digital_names = &scope_digital_channel_names,
 516
 517                 .devopts = &devopts,
 518                 .num_devopts = ARRAY_SIZE(devopts),
 519
 520                 .devopts_cg_analog = &devopts_cg_analog,
 521                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 522
 523                 .devopts_cg_digital = &devopts_cg_digital,
 524                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 525
 526                 .coupling_options = &coupling_options,
 527                 .num_coupling_options = ARRAY_SIZE(coupling_options),
 528
 529                 .logic_threshold = &logic_threshold,
 530                 .num_logic_threshold = ARRAY_SIZE(logic_threshold),
 531                 .logic_threshold_for_pod = TRUE,
 532
 533                 .trigger_sources = &an4_dig16_trigger_sources,
 534                 .num_trigger_sources = ARRAY_SIZE(an4_dig16_trigger_sources),
 535
 536                 .trigger_slopes = &scope_trigger_slopes,
 537                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 538
 539                 .timebases = &timebases,
 540                 .num_timebases = ARRAY_SIZE(timebases),
 541
 542                 .vdivs = &vdivs,
 543                 .num_vdivs = ARRAY_SIZE(vdivs),
 544
 545                 .num_ydivs = 8,
 546
 547                 .scpi_dialect = &hameg_scpi_dialect,
 548         },
 549         {
 550                 .name = {"RTB2002", NULL},
 551                 .analog_channels = 2,
 552                 .digital_channels = 16,
 553
 554                 .analog_names = &scope_analog_channel_names,
 555                 .digital_names = &scope_digital_channel_names,
 556
 557                 .devopts = &devopts,
 558                 .num_devopts = ARRAY_SIZE(devopts),
 559
 560                 .devopts_cg_analog = &devopts_cg_analog,
 561                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 562
 563                 .devopts_cg_digital = &devopts_cg_digital,
 564                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 565
 566                 .coupling_options = &coupling_options_rtb200x,
 567                 .num_coupling_options = ARRAY_SIZE(coupling_options_rtb200x),
 568
 569                 .logic_threshold = &logic_threshold_rtb200x_rtm300x,
 570                 .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
 571                 .logic_threshold_for_pod = FALSE,
 572
 573                 .trigger_sources = &an2_dig16_sbus_trigger_sources,
 574                 .num_trigger_sources = ARRAY_SIZE(an2_dig16_sbus_trigger_sources),
 575
 576                 .trigger_slopes = &scope_trigger_slopes,
 577                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 578
 579                 .timebases = &timebases,
 580                 .num_timebases = ARRAY_SIZE(timebases),
 581
 582                 .vdivs = &vdivs,
 583                 .num_vdivs = ARRAY_SIZE(vdivs),
 584
 585                 .num_ydivs = 8,
 586
 587                 .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
 588         },
 589         {
 590                 .name = {"RTB2004", NULL},
 591                 .analog_channels = 4,
 592                 .digital_channels = 16,
 593
 594                 .analog_names = &scope_analog_channel_names,
 595                 .digital_names = &scope_digital_channel_names,
 596
 597                 .devopts = &devopts,
 598                 .num_devopts = ARRAY_SIZE(devopts),
 599
 600                 .devopts_cg_analog = &devopts_cg_analog,
 601                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 602
 603                 .devopts_cg_digital = &devopts_cg_digital,
 604                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 605
 606                 .coupling_options = &coupling_options_rtb200x,
 607                 .num_coupling_options = ARRAY_SIZE(coupling_options_rtb200x),
 608
 609                 .logic_threshold = &logic_threshold_rtb200x_rtm300x,
 610                 .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
 611                 .logic_threshold_for_pod = FALSE,
 612
 613                 .trigger_sources = &an4_dig16_sbus_trigger_sources,
 614                 .num_trigger_sources = ARRAY_SIZE(an4_dig16_sbus_trigger_sources),
 615
 616                 .trigger_slopes = &scope_trigger_slopes,
 617                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 618
 619                 .timebases = &timebases,
 620                 .num_timebases = ARRAY_SIZE(timebases),
 621
 622                 .vdivs = &vdivs,
 623                 .num_vdivs = ARRAY_SIZE(vdivs),
 624
 625                 .num_ydivs = 8,
 626
 627                 .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
 628         },
 629         {
 630                 .name = {"RTM3002", NULL},
 631                 .analog_channels = 2,
 632                 .digital_channels = 16,
 633
 634                 .analog_names = &scope_analog_channel_names,
 635                 .digital_names = &scope_digital_channel_names,
 636
 637                 .devopts = &devopts,
 638                 .num_devopts = ARRAY_SIZE(devopts),
 639
 640                 .devopts_cg_analog = &devopts_cg_analog,
 641                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 642
 643                 .devopts_cg_digital = &devopts_cg_digital,
 644                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 645
 646                 .coupling_options = &coupling_options_rtm300x,
 647                 .num_coupling_options = ARRAY_SIZE(coupling_options_rtm300x),
 648
 649                 .logic_threshold = &logic_threshold_rtb200x_rtm300x,
 650                 .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
 651                 .logic_threshold_for_pod = FALSE,
 652
 653                 .trigger_sources = &an2_dig16_sbus_trigger_sources,
 654                 .num_trigger_sources = ARRAY_SIZE(an2_dig16_sbus_trigger_sources),
 655
 656                 .trigger_slopes = &scope_trigger_slopes,
 657                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 658
 659                 .timebases = &timebases,
 660                 .num_timebases = ARRAY_SIZE(timebases),
 661
 662                 .vdivs = &vdivs,
 663                 .num_vdivs = ARRAY_SIZE(vdivs),
 664
 665                 .num_ydivs = 8,
 666
 667                 .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
 668         },
 669         {
 670                 .name = {"RTM3004", NULL},
 671                 .analog_channels = 4,
 672                 .digital_channels = 16,
 673
 674                 .analog_names = &scope_analog_channel_names,
 675                 .digital_names = &scope_digital_channel_names,
 676
 677                 .devopts = &devopts,
 678                 .num_devopts = ARRAY_SIZE(devopts),
 679
 680                 .devopts_cg_analog = &devopts_cg_analog,
 681                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 682
 683                 .devopts_cg_digital = &devopts_cg_digital,
 684                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 685
 686                 .coupling_options = &coupling_options_rtm300x,
 687                 .num_coupling_options = ARRAY_SIZE(coupling_options_rtm300x),
 688
 689                 .logic_threshold = &logic_threshold_rtb200x_rtm300x,
 690                 .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
 691                 .logic_threshold_for_pod = FALSE,
 692
 693                 .trigger_sources = &an4_dig16_sbus_trigger_sources,
 694                 .num_trigger_sources = ARRAY_SIZE(an4_dig16_sbus_trigger_sources),
 695
 696                 .trigger_slopes = &scope_trigger_slopes,
 697                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 698
 699                 .timebases = &timebases,
 700                 .num_timebases = ARRAY_SIZE(timebases),
 701
 702                 .vdivs = &vdivs,
 703                 .num_vdivs = ARRAY_SIZE(vdivs),
 704
 705                 .num_ydivs = 8,
 706
 707                 .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
 708         },
 709         {
 710                 .name = {"RTA4004", NULL},
 711                 .analog_channels = 4,
 712                 .digital_channels = 16,
 713
 714                 .analog_names = &scope_analog_channel_names,
 715                 .digital_names = &scope_digital_channel_names,
 716
 717                 .devopts = &devopts,
 718                 .num_devopts = ARRAY_SIZE(devopts),
 719
 720                 .devopts_cg_analog = &devopts_cg_analog,
 721                 .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 722
 723                 .devopts_cg_digital = &devopts_cg_digital,
 724                 .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
 725
 726                 .coupling_options = &coupling_options_rtm300x,
 727                 .num_coupling_options = ARRAY_SIZE(coupling_options_rtm300x),
 728
 729                 .logic_threshold = &logic_threshold_rtb200x_rtm300x,
 730                 .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
 731                 .logic_threshold_for_pod = FALSE,
 732
 733                 .trigger_sources = &an4_dig16_sbus_trigger_sources,
 734                 .num_trigger_sources = ARRAY_SIZE(an4_dig16_sbus_trigger_sources),
 735
 736                 .trigger_slopes = &scope_trigger_slopes,
 737                 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 738
 739                 .timebases = &timebases,
 740                 .num_timebases = ARRAY_SIZE(timebases),
 741
 742                 .vdivs = &vdivs,
 743                 .num_vdivs = ARRAY_SIZE(vdivs),
 744
 745                 .num_ydivs = 8,
 746
 747                 .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
 748         },
 749 };
 750
 751 static void scope_state_dump(const struct scope_config *config,
 752                              struct scope_state *state)
 753 {
 754         unsigned int i;
 755         char *tmp;
 756
 757         for (i = 0; i < config->analog_channels; i++) {
 758                 tmp = sr_voltage_string((*config->vdivs)[state->analog_channels[i].vdiv][0],
 759                                              (*config->vdivs)[state->analog_channels[i].vdiv][1]);
 760                 sr_info("State of analog channel %d -> %s : %s (coupling) %s (vdiv) %2.2e (offset)",
 761                         i + 1, state->analog_channels[i].state ? "On" : "Off",
 762                         (*config->coupling_options)[state->analog_channels[i].coupling],
 763                         tmp, state->analog_channels[i].vertical_offset);
 764         }
 765
 766         for (i = 0; i < config->digital_channels; i++) {
 767                 sr_info("State of digital channel %d -> %s", i,
 768                         state->digital_channels[i] ? "On" : "Off");
 769         }
 770
 771         for (i = 0; i < config->digital_pods; i++) {
 772                 if (!strncmp("USER", (*config->logic_threshold)[state->digital_pods[i].threshold], 4) ||
 773                     !strcmp("MAN", (*config->logic_threshold)[state->digital_pods[i].threshold]))
 774                         sr_info("State of digital POD %d -> %s : %E (threshold)", i + 1,
 775                                 state->digital_pods[i].state ? "On" : "Off",
 776                                 state->digital_pods[i].user_threshold);
 777                 else
 778                         sr_info("State of digital POD %d -> %s : %s (threshold)", i + 1,
 779                                 state->digital_pods[i].state ? "On" : "Off",
 780                                 (*config->logic_threshold)[state->digital_pods[i].threshold]);
 781         }
 782
 783         tmp = sr_period_string((*config->timebases)[state->timebase][0],
 784                                (*config->timebases)[state->timebase][1]);
 785         sr_info("Current timebase: %s", tmp);
 786         g_free(tmp);
 787
 788         tmp = sr_samplerate_string(state->sample_rate);
 789         sr_info("Current samplerate: %s", tmp);
 790         g_free(tmp);
 791
 792         if (!strcmp("PATT", (*config->trigger_sources)[state->trigger_source]))
 793                 sr_info("Current trigger: %s (pattern), %.2f (offset)",
 794                         state->trigger_pattern,
 795                         state->horiz_triggerpos);
 796         else // Edge (slope) trigger
 797                 sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)",
 798                         (*config->trigger_sources)[state->trigger_source],
 799                         (*config->trigger_slopes)[state->trigger_slope],
 800                         state->horiz_triggerpos);
 801 }
 802
 803 static int scope_state_get_array_option(struct sr_scpi_dev_inst *scpi,
 804                 const char *command, const char *(*array)[], unsigned int n, int *result)
 805 {
 806         char *tmp;
 807         int idx;
 808
 809         if (sr_scpi_get_string(scpi, command, &tmp) != SR_OK)
 810                 return SR_ERR;
 811
 812         if ((idx = std_str_idx_s(tmp, *array, n)) < 0) {
 813                 g_free(tmp);
 814                 return SR_ERR_ARG;
 815         }
 816
 817         *result = idx;
 818
 819         g_free(tmp);
 820
 821         return SR_OK;
 822 }
 823
 824 /**
 825  * This function takes a value of the form "2.000E-03" and returns the index
 826  * of an array where a matching pair was found.
 827  *
 828  * @param value The string to be parsed.
 829  * @param array The array of s/f pairs.
 830  * @param array_len The number of pairs in the array.
 831  * @param result The index at which a matching pair was found.
 832  *
 833  * @return SR_ERR on any parsing error, SR_OK otherwise.
 834  */
 835 static int array_float_get(gchar *value, const uint64_t array[][2],
 836                 int array_len, unsigned int *result)
 837 {
 838         struct sr_rational rval;
 839         struct sr_rational aval;
 840
 841         if (sr_parse_rational(value, &rval) != SR_OK)
 842                 return SR_ERR;
 843
 844         for (int i = 0; i < array_len; i++) {
 845                 sr_rational_set(&aval, array[i][0], array[i][1]);
 846                 if (sr_rational_eq(&rval, &aval)) {
 847                         *result = i;
 848                         return SR_OK;
 849                 }
 850         }
 851
 852         return SR_ERR;
 853 }
 854
 855 static struct sr_channel *get_channel_by_index_and_type(GSList *channel_lhead,
 856                                                         int index, int type)
 857 {
 858         while (channel_lhead) {
 859                 struct sr_channel *ch = channel_lhead->data;
 860                 if (ch->index == index && ch->type == type)
 861                         return ch;
 862
 863                 channel_lhead = channel_lhead->next;
 864         }
 865
 866         return 0;
 867 }
 868
 869 static int analog_channel_state_get(struct sr_dev_inst *sdi,
 870                                     const struct scope_config *config,
 871                                     struct scope_state *state)
 872 {
 873         unsigned int i, j;
 874         char command[MAX_COMMAND_SIZE];
 875         char *tmp_str;
 876         struct sr_channel *ch;
 877         struct sr_scpi_dev_inst *scpi = sdi->conn;
 878
 879         for (i = 0; i < config->analog_channels; i++) {
 880                 g_snprintf(command, sizeof(command),
 881                            (*config->scpi_dialect)[SCPI_CMD_GET_ANALOG_CHAN_STATE],
 882                            i + 1);
 883
 884                 if (sr_scpi_get_bool(scpi, command,
 885                                      &state->analog_channels[i].state) != SR_OK)
 886                         return SR_ERR;
 887
 888                 ch = get_channel_by_index_and_type(sdi->channels, i, SR_CHANNEL_ANALOG);
 889                 if (ch)
 890                         ch->enabled = state->analog_channels[i].state;
 891
 892                 g_snprintf(command, sizeof(command),
 893                            (*config->scpi_dialect)[SCPI_CMD_GET_VERTICAL_SCALE],
 894                            i + 1);
 895
 896                 if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
 897                         return SR_ERR;
 898
 899                 if (array_float_get(tmp_str, ARRAY_AND_SIZE(vdivs), &j) != SR_OK) {
 900                         g_free(tmp_str);
 901                         sr_err("Could not determine array index for vertical div scale.");
 902                         return SR_ERR;
 903                 }
 904
 905                 g_free(tmp_str);
 906                 state->analog_channels[i].vdiv = j;
 907
 908                 g_snprintf(command, sizeof(command),
 909                            (*config->scpi_dialect)[SCPI_CMD_GET_VERTICAL_OFFSET],
 910                            i + 1);
 911
 912                 if (sr_scpi_get_float(scpi, command,
 913                                      &state->analog_channels[i].vertical_offset) != SR_OK)
 914                         return SR_ERR;
 915
 916                 g_snprintf(command, sizeof(command),
 917                            (*config->scpi_dialect)[SCPI_CMD_GET_COUPLING],
 918                            i + 1);
 919
 920                 if (scope_state_get_array_option(scpi, command, config->coupling_options,
 921                                          config->num_coupling_options,
 922                                          &state->analog_channels[i].coupling) != SR_OK)
 923                         return SR_ERR;
 924
 925                 g_snprintf(command, sizeof(command),
 926                            (*config->scpi_dialect)[SCPI_CMD_GET_PROBE_UNIT],
 927                            i + 1);
 928
 929                 if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
 930                         return SR_ERR;
 931
 932                 if (tmp_str[0] == 'A')
 933                         state->analog_channels[i].probe_unit = 'A';
 934                 else
 935                         state->analog_channels[i].probe_unit = 'V';
 936                 g_free(tmp_str);
 937         }
 938
 939         return SR_OK;
 940 }
 941
 942 static int digital_channel_state_get(struct sr_dev_inst *sdi,
 943                                      const struct scope_config *config,
 944                                      struct scope_state *state)
 945 {
 946         unsigned int i, idx;
 947         int result = SR_ERR;
 948         char *logic_threshold_short[MAX_NUM_LOGIC_THRESHOLD_ENTRIES];
 949         char command[MAX_COMMAND_SIZE];
 950         struct sr_channel *ch;
 951         struct sr_scpi_dev_inst *scpi = sdi->conn;
 952
 953         for (i = 0; i < config->digital_channels; i++) {
 954                 g_snprintf(command, sizeof(command),
 955                            (*config->scpi_dialect)[SCPI_CMD_GET_DIG_CHAN_STATE],
 956                            i);
 957
 958                 if (sr_scpi_get_bool(scpi, command,
 959                                      &state->digital_channels[i]) != SR_OK)
 960                         return SR_ERR;
 961
 962                 ch = get_channel_by_index_and_type(sdi->channels, i, SR_CHANNEL_LOGIC);
 963                 if (ch)
 964                         ch->enabled = state->digital_channels[i];
 965         }
 966
 967         /* According to the SCPI standard, on models that support multiple
 968          * user-defined logic threshold settings the response to the command
 969          * SCPI_CMD_GET_DIG_POD_THRESHOLD might return "USER" instead of
 970          * "USER1".
 971          *
 972          * This makes more difficult to validate the response when the logic
 973          * threshold is set to "USER1" and therefore we need to prevent device
 974          * opening failures in such configuration case...
 975          */
 976         for (i = 0; i < config->num_logic_threshold; i++) {
 977                 logic_threshold_short[i] = g_strdup((*config->logic_threshold)[i]);
 978                 if (!strcmp("USER1", (*config->logic_threshold)[i]))
 979                         g_strlcpy(logic_threshold_short[i],
 980                                   (*config->logic_threshold)[i], strlen((*config->logic_threshold)[i]));
 981         }
 982
 983         for (i = 0; i < config->digital_pods; i++) {
 984                 g_snprintf(command, sizeof(command),
 985                            (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_STATE],
 986                            i + 1);
 987
 988                 if (sr_scpi_get_bool(scpi, command,
 989                                      &state->digital_pods[i].state) != SR_OK)
 990                         goto exit;
 991
 992                 /* Check if the threshold command is based on the POD or digital channel index. */
 993                 if (config->logic_threshold_for_pod)
 994                         idx = i + 1;
 995                 else
 996                         idx = i * DIGITAL_CHANNELS_PER_POD;
 997
 998                 g_snprintf(command, sizeof(command),
 999                            (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_THRESHOLD],
1000                            idx);
1001
1002                 /* Check for both standard and shortened responses. */
1003                 if (scope_state_get_array_option(scpi, command, config->logic_threshold,
1004                                                  config->num_logic_threshold,
1005                                                  &state->digital_pods[i].threshold) != SR_OK)
1006                         if (scope_state_get_array_option(scpi, command, (const char * (*)[]) &logic_threshold_short,
1007                                                          config->num_logic_threshold,
1008                                                          &state->digital_pods[i].threshold) != SR_OK)
1009                                 goto exit;
1010
1011                 /* If used-defined or custom threshold is active, get the level. */
1012                 if (!strcmp("USER1", (*config->logic_threshold)[state->digital_pods[i].threshold]))
1013                         g_snprintf(command, sizeof(command),
1014                                    (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_USER_THRESHOLD],
1015                                    idx, 1); /* USER1 logic threshold setting. */
1016                 else if (!strcmp("USER2", (*config->logic_threshold)[state->digital_pods[i].threshold]))
1017                         g_snprintf(command, sizeof(command),
1018                                    (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_USER_THRESHOLD],
1019                                    idx, 2); /* USER2 for custom logic_threshold setting. */
1020                 else if (!strcmp("USER", (*config->logic_threshold)[state->digital_pods[i].threshold]) ||
1021                          !strcmp("MAN", (*config->logic_threshold)[state->digital_pods[i].threshold]))
1022                         g_snprintf(command, sizeof(command),
1023                                    (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_USER_THRESHOLD],
1024                                    idx); /* USER or MAN for custom logic_threshold setting. */
1025                 if (!strcmp("USER1", (*config->logic_threshold)[state->digital_pods[i].threshold]) ||
1026                     !strcmp("USER2", (*config->logic_threshold)[state->digital_pods[i].threshold]) ||
1027                     !strcmp("USER", (*config->logic_threshold)[state->digital_pods[i].threshold]) ||
1028                     !strcmp("MAN", (*config->logic_threshold)[state->digital_pods[i].threshold]))
1029                         if (sr_scpi_get_float(scpi, command,
1030                             &state->digital_pods[i].user_threshold) != SR_OK)
1031                                 goto exit;
1032         }
1033
1034         result = SR_OK;
1035
1036 exit:
1037         for (i = 0; i < config->num_logic_threshold; i++)
1038                 g_free(logic_threshold_short[i]);
1039
1040         return result;
1041 }
1042
1043 SR_PRIV int hmo_update_sample_rate(const struct sr_dev_inst *sdi)
1044 {
1045         struct dev_context *devc;
1046         struct scope_state *state;
1047         const struct scope_config *config;
1048         float tmp_float;
1049
1050         devc = sdi->priv;
1051         config = devc->model_config;
1052         state = devc->model_state;
1053
1054         if (sr_scpi_get_float(sdi->conn,
1055                               (*config->scpi_dialect)[SCPI_CMD_GET_SAMPLE_RATE],
1056                               &tmp_float) != SR_OK)
1057                 return SR_ERR;
1058
1059         state->sample_rate = tmp_float;
1060
1061         return SR_OK;
1062 }
1063
1064 SR_PRIV int hmo_scope_state_get(struct sr_dev_inst *sdi)
1065 {
1066         struct dev_context *devc;
1067         struct scope_state *state;
1068         const struct scope_config *config;
1069         float tmp_float;
1070         unsigned int i;
1071         char *tmp_str;
1072
1073         devc = sdi->priv;
1074         config = devc->model_config;
1075         state = devc->model_state;
1076
1077         sr_info("Fetching scope state");
1078
1079         if (analog_channel_state_get(sdi, config, state) != SR_OK)
1080                 return SR_ERR;
1081
1082         if (digital_channel_state_get(sdi, config, state) != SR_OK)
1083                 return SR_ERR;
1084
1085         if (sr_scpi_get_string(sdi->conn,
1086                         (*config->scpi_dialect)[SCPI_CMD_GET_TIMEBASE],
1087                         &tmp_str) != SR_OK)
1088                 return SR_ERR;
1089
1090         if (array_float_get(tmp_str, ARRAY_AND_SIZE(timebases), &i) != SR_OK) {
1091                 g_free(tmp_str);
1092                 sr_err("Could not determine array index for time base.");
1093                 return SR_ERR;
1094         }
1095         g_free(tmp_str);
1096
1097         state->timebase = i;
1098
1099         /* Determine the number of horizontal (x) divisions. */
1100         if (sr_scpi_get_int(sdi->conn,
1101             (*config->scpi_dialect)[SCPI_CMD_GET_HORIZONTAL_DIV],
1102             (int *)&config->num_xdivs) != SR_OK)
1103                 return SR_ERR;
1104
1105         if (sr_scpi_get_float(sdi->conn,
1106                         (*config->scpi_dialect)[SCPI_CMD_GET_HORIZ_TRIGGERPOS],
1107                         &tmp_float) != SR_OK)
1108                 return SR_ERR;
1109         state->horiz_triggerpos = tmp_float /
1110                 (((double) (*config->timebases)[state->timebase][0] /
1111                   (*config->timebases)[state->timebase][1]) * config->num_xdivs);
1112         state->horiz_triggerpos -= 0.5;
1113         state->horiz_triggerpos *= -1;
1114
1115         if (scope_state_get_array_option(sdi->conn,
1116                         (*config->scpi_dialect)[SCPI_CMD_GET_TRIGGER_SOURCE],
1117                         config->trigger_sources, config->num_trigger_sources,
1118                         &state->trigger_source) != SR_OK)
1119                 return SR_ERR;
1120
1121         if (scope_state_get_array_option(sdi->conn,
1122                         (*config->scpi_dialect)[SCPI_CMD_GET_TRIGGER_SLOPE],
1123                         config->trigger_slopes, config->num_trigger_slopes,
1124                         &state->trigger_slope) != SR_OK)
1125                 return SR_ERR;
1126
1127         if (sr_scpi_get_string(sdi->conn,
1128                                (*config->scpi_dialect)[SCPI_CMD_GET_TRIGGER_PATTERN],
1129                                &tmp_str) != SR_OK)
1130                 return SR_ERR;
1131         strncpy(state->trigger_pattern,
1132                 sr_scpi_unquote_string(tmp_str),
1133                 MAX_ANALOG_CHANNEL_COUNT + MAX_DIGITAL_CHANNEL_COUNT);
1134         g_free(tmp_str);
1135
1136         if (sr_scpi_get_string(sdi->conn,
1137                              (*config->scpi_dialect)[SCPI_CMD_GET_HIGH_RESOLUTION],
1138                              &tmp_str) != SR_OK)
1139                 return SR_ERR;
1140         if (!strcmp("OFF", tmp_str))
1141                 state->high_resolution = FALSE;
1142         else
1143                 state->high_resolution = TRUE;
1144         g_free(tmp_str);
1145
1146         if (sr_scpi_get_string(sdi->conn,
1147                              (*config->scpi_dialect)[SCPI_CMD_GET_PEAK_DETECTION],
1148                              &tmp_str) != SR_OK)
1149                 return SR_ERR;
1150         if (!strcmp("OFF", tmp_str))
1151                 state->peak_detection = FALSE;
1152         else
1153                 state->peak_detection = TRUE;
1154         g_free(tmp_str);
1155
1156         if (hmo_update_sample_rate(sdi) != SR_OK)
1157                 return SR_ERR;
1158
1159         sr_info("Fetching finished.");
1160
1161         scope_state_dump(config, state);
1162
1163         return SR_OK;
1164 }
1165
1166 static struct scope_state *scope_state_new(const struct scope_config *config)
1167 {
1168         struct scope_state *state;
1169
1170         state = g_malloc0(sizeof(struct scope_state));
1171         state->analog_channels = g_malloc0_n(config->analog_channels,
1172                         sizeof(struct analog_channel_state));
1173         state->digital_channels = g_malloc0_n(
1174                         config->digital_channels, sizeof(gboolean));
1175         state->digital_pods = g_malloc0_n(config->digital_pods,
1176                         sizeof(struct digital_pod_state));
1177
1178         return state;
1179 }
1180
1181 SR_PRIV void hmo_scope_state_free(struct scope_state *state)
1182 {
1183         g_free(state->analog_channels);
1184         g_free(state->digital_channels);
1185         g_free(state->digital_pods);
1186         g_free(state);
1187 }
1188
1189 SR_PRIV int hmo_init_device(struct sr_dev_inst *sdi)
1190 {
1191         int model_index;
1192         unsigned int i, j, group;
1193         struct sr_channel *ch;
1194         struct dev_context *devc;
1195         int ret;
1196
1197         devc = sdi->priv;
1198         model_index = -1;
1199
1200         /* Find the exact model. */
1201         for (i = 0; i < ARRAY_SIZE(scope_models); i++) {
1202                 for (j = 0; scope_models[i].name[j]; j++) {
1203                         if (!strcmp(sdi->model, scope_models[i].name[j])) {
1204                                 model_index = i;
1205                                 break;
1206                         }
1207                 }
1208                 if (model_index != -1)
1209                         break;
1210         }
1211
1212         if (model_index == -1) {
1213                 sr_dbg("Unsupported device.");
1214                 return SR_ERR_NA;
1215         }
1216
1217         /* Configure the number of PODs given the number of digital channels. */
1218         scope_models[model_index].digital_pods = scope_models[model_index].digital_channels / DIGITAL_CHANNELS_PER_POD;
1219
1220         devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) *
1221                                         scope_models[model_index].analog_channels);
1222         devc->digital_groups = g_malloc0(sizeof(struct sr_channel_group*) *
1223                                          scope_models[model_index].digital_pods);
1224         if (!devc->analog_groups || !devc->digital_groups) {
1225                 g_free(devc->analog_groups);
1226                 g_free(devc->digital_groups);
1227                 return SR_ERR_MALLOC;
1228         }
1229
1230         /* Add analog channels. */
1231         for (i = 0; i < scope_models[model_index].analog_channels; i++) {
1232                 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
1233                            (*scope_models[model_index].analog_names)[i]);
1234
1235                 devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
1236
1237                 devc->analog_groups[i]->name = g_strdup(
1238                         (char *)(*scope_models[model_index].analog_names)[i]);
1239                 devc->analog_groups[i]->channels = g_slist_append(NULL, ch);
1240
1241                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
1242                                                    devc->analog_groups[i]);
1243         }
1244
1245         /* Add digital channel groups. */
1246         ret = SR_OK;
1247         for (i = 0; i < scope_models[model_index].digital_pods; i++) {
1248                 devc->digital_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
1249                 if (!devc->digital_groups[i]) {
1250                         ret = SR_ERR_MALLOC;
1251                         break;
1252                 }
1253                 devc->digital_groups[i]->name = g_strdup_printf("POD%d", i + 1);
1254                 sdi->channel_groups = g_slist_append(sdi->channel_groups,
1255                                    devc->digital_groups[i]);
1256         }
1257         if (ret != SR_OK)
1258                 return ret;
1259
1260         /* Add digital channels. */
1261         for (i = 0; i < scope_models[model_index].digital_channels; i++) {
1262                 ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
1263                            (*scope_models[model_index].digital_names)[i]);
1264
1265                 group = i / DIGITAL_CHANNELS_PER_POD;
1266                 devc->digital_groups[group]->channels = g_slist_append(
1267                         devc->digital_groups[group]->channels, ch);
1268         }
1269
1270         devc->model_config = &scope_models[model_index];
1271         devc->samples_limit = 0;
1272         devc->frame_limit = 0;
1273
1274         if (!(devc->model_state = scope_state_new(devc->model_config)))
1275                 return SR_ERR_MALLOC;
1276
1277         return SR_OK;
1278 }
1279
1280 /* Queue data of one channel group, for later submission. */
1281 SR_PRIV void hmo_queue_logic_data(struct dev_context *devc,
1282                                   size_t group, GByteArray *pod_data)
1283 {
1284         size_t size;
1285         GByteArray *store;
1286         uint8_t *logic_data;
1287         size_t idx, logic_step;
1288
1289         /*
1290          * Upon first invocation, allocate the array which can hold the
1291          * combined logic data for all channels. Assume that each channel
1292          * will yield an identical number of samples per receive call.
1293          *
1294          * As a poor man's safety measure: (Silently) skip processing
1295          * for unexpected sample counts, and ignore samples for
1296          * unexpected channel groups. Don't bother with complicated
1297          * resize logic, considering that many models only support one
1298          * pod, and the most capable supported models have two pods of
1299          * identical size. We haven't yet seen any "odd" configuration.
1300          */
1301         if (!devc->logic_data) {
1302                 size = pod_data->len * devc->pod_count;
1303                 store = g_byte_array_sized_new(size);
1304                 memset(store->data, 0, size);
1305                 store = g_byte_array_set_size(store, size);
1306                 devc->logic_data = store;
1307         } else {
1308                 store = devc->logic_data;
1309                 size = store->len / devc->pod_count;
1310                 if (group >= devc->pod_count)
1311                         return;
1312         }
1313
1314         /*
1315          * Fold the data of the most recently received channel group into
1316          * the storage, where data resides for all channels combined.
1317          */
1318         logic_data = store->data;
1319         logic_data += group;
1320         logic_step = devc->pod_count;
1321         for (idx = 0; idx < pod_data->len; idx++) {
1322                 *logic_data = pod_data->data[idx];
1323                 logic_data += logic_step;
1324         }
1325
1326         /* Truncate acquisition if a smaller number of samples has been requested. */
1327         if (devc->samples_limit > 0 && devc->logic_data->len > devc->samples_limit * devc->pod_count)
1328                 devc->logic_data->len = devc->samples_limit * devc->pod_count;
1329 }
1330
1331 /* Submit data for all channels, after the individual groups got collected. */
1332 SR_PRIV void hmo_send_logic_packet(struct sr_dev_inst *sdi,
1333                                    struct dev_context *devc)
1334 {
1335         struct sr_datafeed_packet packet;
1336         struct sr_datafeed_logic logic;
1337
1338         if (!devc->logic_data)
1339                 return;
1340
1341         logic.data = devc->logic_data->data;
1342         logic.length = devc->logic_data->len;
1343         logic.unitsize = devc->pod_count;
1344
1345         packet.type = SR_DF_LOGIC;
1346         packet.payload = &logic;
1347
1348         sr_session_send(sdi, &packet);
1349 }
1350
1351 /* Undo previous resource allocation. */
1352 SR_PRIV void hmo_cleanup_logic_data(struct dev_context *devc)
1353 {
1354
1355         if (devc->logic_data) {
1356                 g_byte_array_free(devc->logic_data, TRUE);
1357                 devc->logic_data = NULL;
1358         }
1359         /*
1360          * Keep 'pod_count'! It's required when more frames will be
1361          * received, and does not harm when kept after acquisition.
1362          */
1363 }
1364
1365 SR_PRIV int hmo_receive_data(int fd, int revents, void *cb_data)
1366 {
1367         struct sr_channel *ch;
1368         struct sr_dev_inst *sdi;
1369         struct dev_context *devc;
1370         struct scope_state *state;
1371         struct sr_datafeed_packet packet;
1372         GByteArray *data;
1373         struct sr_datafeed_analog analog;
1374         struct sr_analog_encoding encoding;
1375         struct sr_analog_meaning meaning;
1376         struct sr_analog_spec spec;
1377         struct sr_datafeed_logic logic;
1378         size_t group;
1379
1380         (void)fd;
1381         (void)revents;
1382
1383         data = NULL;
1384
1385         if (!(sdi = cb_data))
1386                 return TRUE;
1387
1388         if (!(devc = sdi->priv))
1389                 return TRUE;
1390
1391         /* Although this is correct in general, the USBTMC libusb implementation
1392          * currently does not generate an event prior to the first read. Often
1393          * it is ok to start reading just after the 50ms timeout. See bug #785.
1394         if (revents != G_IO_IN)
1395                 return TRUE;
1396         */
1397
1398         ch = devc->current_channel->data;
1399         state = devc->model_state;
1400
1401         /*
1402          * Send "frame begin" packet upon reception of data for the
1403          * first enabled channel.
1404          */
1405         if (devc->current_channel == devc->enabled_channels)
1406                 std_session_send_df_frame_begin(sdi);
1407
1408         /*
1409          * Pass on the received data of the channel(s).
1410          */
1411         switch (ch->type) {
1412         case SR_CHANNEL_ANALOG:
1413                 if (sr_scpi_get_block(sdi->conn, NULL, &data) != SR_OK) {
1414                         if (data)
1415                                 g_byte_array_free(data, TRUE);
1416                         return TRUE;
1417                 }
1418
1419                 packet.type = SR_DF_ANALOG;
1420
1421                 analog.data = data->data;
1422                 analog.num_samples = data->len / sizeof(float);
1423                 /* Truncate acquisition if a smaller number of samples has been requested. */
1424                 if (devc->samples_limit > 0 && analog.num_samples > devc->samples_limit)
1425                         analog.num_samples = devc->samples_limit;
1426                 /* TODO: Use proper 'digits' value for this device (and its modes). */
1427                 sr_analog_init(&analog, &encoding, &meaning, &spec, 2);
1428                 encoding.is_signed = TRUE;
1429                 if (state->analog_channels[ch->index].probe_unit == 'V') {
1430                         meaning.mq = SR_MQ_VOLTAGE;
1431                         meaning.unit = SR_UNIT_VOLT;
1432                 } else {
1433                         meaning.mq = SR_MQ_CURRENT;
1434                         meaning.unit = SR_UNIT_AMPERE;
1435                 }
1436                 meaning.channels = g_slist_append(NULL, ch);
1437                 packet.payload = &analog;
1438                 sr_session_send(sdi, &packet);
1439                 devc->num_samples = data->len / sizeof(float);
1440                 g_slist_free(meaning.channels);
1441                 g_byte_array_free(data, TRUE);
1442                 data = NULL;
1443                 break;
1444         case SR_CHANNEL_LOGIC:
1445                 if (sr_scpi_get_block(sdi->conn, NULL, &data) != SR_OK) {
1446                         if (data)
1447                                 g_byte_array_free(data, TRUE);
1448                         return TRUE;
1449                 }
1450
1451                 /*
1452                  * If only data from the first pod is involved in the
1453                  * acquisition, then the raw input bytes can get passed
1454                  * forward for performance reasons. When the second pod
1455                  * is involved (either alone, or in combination with the
1456                  * first pod), then the received bytes need to be put
1457                  * into memory in such a layout that all channel groups
1458                  * get combined, and a unitsize larger than a single byte
1459                  * applies. The "queue" logic transparently copes with
1460                  * any such configuration. This works around the lack
1461                  * of support for "meaning" to logic data, which is used
1462                  * above for analog data.
1463                  */
1464                 if (devc->pod_count == 1) {
1465                         packet.type = SR_DF_LOGIC;
1466                         logic.data = data->data;
1467                         logic.length = data->len;
1468                         /* Truncate acquisition if a smaller number of samples has been requested. */
1469                         if (devc->samples_limit > 0 && logic.length > devc->samples_limit)
1470                                 logic.length = devc->samples_limit;
1471                         logic.unitsize = 1;
1472                         packet.payload = &logic;
1473                         sr_session_send(sdi, &packet);
1474                 } else {
1475                         group = ch->index / DIGITAL_CHANNELS_PER_POD;
1476                         hmo_queue_logic_data(devc, group, data);
1477                 }
1478
1479                 devc->num_samples = data->len / devc->pod_count;
1480                 g_byte_array_free(data, TRUE);
1481                 data = NULL;
1482                 break;
1483         default:
1484                 sr_err("Invalid channel type.");
1485                 break;
1486         }
1487
1488         /*
1489          * Advance to the next enabled channel. When data for all enabled
1490          * channels was received, then flush potentially queued logic data,
1491          * and send the "frame end" packet.
1492          */
1493         if (devc->current_channel->next) {
1494                 devc->current_channel = devc->current_channel->next;
1495                 hmo_request_data(sdi);
1496                 return TRUE;
1497         }
1498         hmo_send_logic_packet(sdi, devc);
1499
1500         /*
1501          * Release the logic data storage after each frame. This copes
1502          * with sample counts that differ in length per frame. -- Is
1503          * this a real constraint when acquiring multiple frames with
1504          * identical device settings?
1505          */
1506         hmo_cleanup_logic_data(devc);
1507
1508         std_session_send_df_frame_end(sdi);
1509
1510         /*
1511          * End of frame was reached. Stop acquisition after the specified
1512          * number of frames or after the specified number of samples, or
1513          * continue reception by starting over at the first enabled channel.
1514          */
1515         if (++devc->num_frames >= devc->frame_limit || devc->num_samples >= devc->samples_limit) {
1516                 sr_dev_acquisition_stop(sdi);
1517                 hmo_cleanup_logic_data(devc);
1518         } else {
1519                 devc->current_channel = devc->enabled_channels;
1520                 hmo_request_data(sdi);
1521         }
1522
1523         return TRUE;
1524 }