2 * This file is part of the libsigrok project.
4 * Copyright (C) 2017 Sven Schnelle <svens@stackframe.org>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 struct lecroy_wavedesc_2_x {
28 uint16_t comm_order; /* 1 - little endian */
29 uint32_t wave_descriptor_length;
30 uint32_t user_text_len;
32 uint32_t trigtime_array_length;
33 uint32_t ris_time1_array_length;
35 uint32_t wave_array1_length;
36 uint32_t wave_array2_length;
37 uint32_t wave_array3_length;
38 uint32_t wave_array4_length;
39 char instrument_name[16];
40 uint32_t instrument_number;
43 uint32_t wave_array_count;
44 uint32_t points_per_screen;
45 uint32_t first_valid_point;
46 uint32_t last_valid_point;
48 uint32_t sparsing_factor;
49 uint32_t segment_index;
50 uint32_t subarray_count;
51 uint32_t sweeps_per_acq;
52 uint16_t points_per_pair;
55 float vertical_offset;
58 uint16_t nominal_bits;
59 uint16_t nom_subarray_count;
67 } __attribute__((packed));
69 struct lecroy_wavedesc {
70 char descriptor_name[16];
71 char template_name[16];
73 struct lecroy_wavedesc_2_x version_2_x;
75 } __attribute__((packed));
77 static const char *coupling_options[] = {
78 "A1M", ///< AC with 1 MOhm termination
79 "D50", ///< DC with 50 Ohm termination
80 "D1M", ///< DC with 1 MOhm termination
85 static const char *scope_trigger_slopes[] = {
89 static const char *trigger_sources[] = {
90 "C1", "C2", "C3", "C4", "LINE", "EXT",
93 static const uint64_t timebases[][2] = {
95 { 20, 1000000000000 },
96 { 50, 1000000000000 },
97 { 100, 1000000000000 },
98 { 200, 1000000000000 },
99 { 500, 1000000000000 },
143 static const uint64_t vdivs[][2] = {
163 static const char *scope_analog_channel_names[] = {
164 "CH1", "CH2", "CH3", "CH4",
167 static const struct scope_config scope_models[] = {
172 .analog_channels = 4,
173 .analog_names = &scope_analog_channel_names,
175 .coupling_options = &coupling_options,
176 .num_coupling_options = ARRAY_SIZE(coupling_options),
178 .trigger_sources = &trigger_sources,
179 .num_trigger_sources = ARRAY_SIZE(trigger_sources),
181 .trigger_slopes = &scope_trigger_slopes,
182 .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
184 .timebases = &timebases,
185 .num_timebases = ARRAY_SIZE(timebases),
188 .num_vdivs = ARRAY_SIZE(vdivs),
195 static void scope_state_dump(const struct scope_config *config,
196 struct scope_state *state)
201 for (i = 0; i < config->analog_channels; i++) {
202 tmp = sr_voltage_string((*config->vdivs)[state->analog_channels[i].vdiv][0],
203 (*config->vdivs)[state->analog_channels[i].vdiv][1]);
204 sr_info("State of analog channel %d -> %s : %s (coupling) %s (vdiv) %2.2e (offset)",
205 i + 1, state->analog_channels[i].state ? "On" : "Off",
206 (*config->coupling_options)[state->analog_channels[i].coupling],
207 tmp, state->analog_channels[i].vertical_offset);
210 tmp = sr_period_string((*config->timebases)[state->timebase][0],
211 (*config->timebases)[state->timebase][1]);
212 sr_info("Current timebase: %s", tmp);
215 tmp = sr_samplerate_string(state->sample_rate);
216 sr_info("Current samplerate: %s", tmp);
219 sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)",
220 (*config->trigger_sources)[state->trigger_source],
221 (*config->trigger_slopes)[state->trigger_slope],
222 state->horiz_triggerpos);
225 static int scope_state_get_array_option(const char *resp,
226 const char *(*array)[], unsigned int n, int *result)
230 for (i = 0; i < n; i++) {
231 if (!g_strcmp0(resp, (*array)[i])) {
241 * This function takes a value of the form "2.000E-03" and returns the index
242 * of an array where a matching pair was found.
244 * @param value The string to be parsed.
245 * @param array The array of s/f pairs.
246 * @param array_len The number of pairs in the array.
247 * @param result The index at which a matching pair was found.
249 * @return SR_ERR on any parsing error, SR_OK otherwise.
251 static int array_float_get(gchar *value, const uint64_t array[][2],
252 int array_len, unsigned int *result)
254 struct sr_rational rval;
255 struct sr_rational aval;
257 if (sr_parse_rational(value, &rval) != SR_OK)
260 for (int i = 0; i < array_len; i++) {
261 sr_rational_set(&aval, array[i][0], array[i][1]);
262 if (sr_rational_eq(&rval, &aval)) {
271 static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi,
272 const struct scope_config *config, struct scope_state *state)
275 char command[MAX_COMMAND_SIZE];
278 for (i = 0; i < config->analog_channels; i++) {
279 g_snprintf(command, sizeof(command), "C%d:TRACE?", i + 1);
281 if (sr_scpi_get_bool(scpi, command,
282 &state->analog_channels[i].state) != SR_OK)
285 g_snprintf(command, sizeof(command), "C%d:VDIV?", i + 1);
287 if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
290 if (array_float_get(tmp_str, ARRAY_AND_SIZE(vdivs), &j) != SR_OK) {
292 sr_err("Could not determine array index for vertical div scale.");
297 state->analog_channels[i].vdiv = j;
299 g_snprintf(command, sizeof(command), "C%d:OFFSET?", i + 1);
301 if (sr_scpi_get_float(scpi, command, &state->analog_channels[i].vertical_offset) != SR_OK)
304 g_snprintf(command, sizeof(command), "C%d:COUPLING?", i + 1);
306 if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
310 if (scope_state_get_array_option(tmp_str, config->coupling_options,
311 config->num_coupling_options,
312 &state->analog_channels[i].coupling) != SR_OK)
321 SR_PRIV int lecroy_xstream_update_sample_rate(const struct sr_dev_inst *sdi)
323 struct dev_context *devc;
324 struct scope_state *state;
325 const struct scope_config *config;
326 float memsize, timediv;
329 state = devc->model_state;
330 config = devc->model_config;
332 if (sr_scpi_get_float(sdi->conn, "MEMORY_SIZE?", &memsize) != SR_OK)
335 if (sr_scpi_get_float(sdi->conn, "TIME_DIV?", &timediv) != SR_OK)
338 state->sample_rate = 1 / ((timediv * config->num_xdivs) / memsize);
343 SR_PRIV int lecroy_xstream_state_get(struct sr_dev_inst *sdi)
345 struct dev_context *devc;
346 struct scope_state *state;
347 const struct scope_config *config;
349 char *tmp_str, *tmp_str2, *tmpp, *p, *key;
350 char command[MAX_COMMAND_SIZE];
351 char *trig_source = NULL;
354 config = devc->model_config;
355 state = devc->model_state;
357 sr_info("Fetching scope state");
359 if (analog_channel_state_get(sdi->conn, config, state) != SR_OK)
362 if (sr_scpi_get_string(sdi->conn, "TIME_DIV?", &tmp_str) != SR_OK)
365 if (array_float_get(tmp_str, ARRAY_AND_SIZE(timebases), &i) != SR_OK) {
367 sr_err("Could not determine array index for timbase scale.");
373 if (sr_scpi_get_string(sdi->conn, "TRIG_SELECT?", &tmp_str) != SR_OK)
379 while ((p = strtok_r(tmp_str2, ",", &tmpp))) {
386 } else if (!(i & 1)) {
387 if (!strcmp(key, "SR"))
393 if (!trig_source || scope_state_get_array_option(trig_source,
394 config->trigger_sources, config->num_trigger_sources,
395 &state->trigger_source) != SR_OK)
398 g_snprintf(command, sizeof(command), "%s:TRIG_SLOPE?", trig_source);
399 if (sr_scpi_get_string(sdi->conn, command, &tmp_str) != SR_OK)
402 if (scope_state_get_array_option(tmp_str, config->trigger_slopes,
403 config->num_trigger_slopes, &state->trigger_slope) != SR_OK)
406 if (sr_scpi_get_float(sdi->conn, "TRIG_DELAY?", &state->horiz_triggerpos) != SR_OK)
409 if (lecroy_xstream_update_sample_rate(sdi) != SR_OK)
412 sr_info("Fetching finished.");
414 scope_state_dump(config, state);
419 static struct scope_state *scope_state_new(const struct scope_config *config)
421 struct scope_state *state;
423 state = g_malloc0(sizeof(struct scope_state));
424 state->analog_channels = g_malloc0_n(config->analog_channels,
425 sizeof(struct analog_channel_state));
429 SR_PRIV void lecroy_xstream_state_free(struct scope_state *state)
431 g_free(state->analog_channels);
435 SR_PRIV int lecroy_xstream_init_device(struct sr_dev_inst *sdi)
437 char command[MAX_COMMAND_SIZE];
440 struct sr_channel *ch;
441 struct dev_context *devc;
442 gboolean channel_enabled;
447 /* Find the exact model. */
448 for (i = 0; i < ARRAY_SIZE(scope_models); i++) {
449 for (j = 0; scope_models[i].name[j]; j++) {
450 if (!strcmp(sdi->model, scope_models[i].name[j])) {
455 if (model_index != -1)
459 if (model_index == -1) {
460 sr_dbg("Unknown LeCroy device, using default config.");
461 for (i = 0; i < ARRAY_SIZE(scope_models); i++)
462 if (scope_models[i].name[0] == NULL)
466 /* Set the desired response and format modes. */
467 sr_scpi_send(sdi->conn, "COMM_HEADER OFF");
468 sr_scpi_send(sdi->conn, "COMM_FORMAT DEF9,WORD,BIN");
470 devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) *
471 scope_models[model_index].analog_channels);
473 /* Add analog channels. */
474 for (i = 0; i < scope_models[model_index].analog_channels; i++) {
475 g_snprintf(command, sizeof(command), "C%d:TRACE?", i + 1);
477 if (sr_scpi_get_bool(sdi->conn, command, &channel_enabled) != SR_OK)
480 g_snprintf(command, sizeof(command), "C%d:VDIV?", i + 1);
482 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, channel_enabled,
483 (*scope_models[model_index].analog_names)[i]);
485 devc->analog_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
487 devc->analog_groups[i]->name = g_strdup(
488 (char *)(*scope_models[model_index].analog_names)[i]);
489 devc->analog_groups[i]->channels = g_slist_append(NULL, ch);
491 sdi->channel_groups = g_slist_append(sdi->channel_groups,
492 devc->analog_groups[i]);
495 devc->model_config = &scope_models[model_index];
496 devc->frame_limit = 0;
497 devc->model_state = scope_state_new(devc->model_config);
502 static int lecroy_waveform_2_x_to_analog(GByteArray *data,
503 struct lecroy_wavedesc *desc, struct sr_datafeed_analog *analog)
505 struct sr_analog_encoding *encoding = analog->encoding;
506 struct sr_analog_meaning *meaning = analog->meaning;
507 struct sr_analog_spec *spec = analog->spec;
509 int16_t *waveform_data;
510 unsigned int i, num_samples;
512 data_float = g_malloc(desc->version_2_x.wave_array_count * sizeof(float));
513 num_samples = desc->version_2_x.wave_array_count;
515 waveform_data = (int16_t*)(data->data +
516 + desc->version_2_x.wave_descriptor_length
517 + desc->version_2_x.user_text_len);
519 for (i = 0; i < num_samples; i++)
520 data_float[i] = (float)waveform_data[i]
521 * desc->version_2_x.vertical_gain
522 + desc->version_2_x.vertical_offset;
524 analog->data = data_float;
525 analog->num_samples = num_samples;
527 encoding->unitsize = sizeof(float);
528 encoding->is_signed = TRUE;
529 encoding->is_float = TRUE;
530 encoding->is_bigendian = FALSE;
531 encoding->scale.p = 1;
532 encoding->scale.q = 1;
533 encoding->offset.p = 0;
534 encoding->offset.q = 1;
536 encoding->digits = 6;
537 encoding->is_digits_decimal = FALSE;
539 if (strcmp(desc->version_2_x.vertunit, "A")) {
540 meaning->mq = SR_MQ_CURRENT;
541 meaning->unit = SR_UNIT_AMPERE;
543 /* Default to voltage. */
544 meaning->mq = SR_MQ_VOLTAGE;
545 meaning->unit = SR_UNIT_VOLT;
548 meaning->mqflags = 0;
549 spec->spec_digits = 3;
554 static int lecroy_waveform_to_analog(GByteArray *data,
555 struct sr_datafeed_analog *analog)
557 struct lecroy_wavedesc *desc;
559 if (data->len < sizeof(struct lecroy_wavedesc))
562 desc = (struct lecroy_wavedesc*)data->data;
564 if (!strncmp(desc->template_name, "LECROY_2_2", 16) ||
565 !strncmp(desc->template_name, "LECROY_2_3", 16)) {
566 return lecroy_waveform_2_x_to_analog(data, desc, analog);
569 sr_err("Waveformat template '%.16s' not supported.", desc->template_name);
573 SR_PRIV int lecroy_xstream_receive_data(int fd, int revents, void *cb_data)
575 struct sr_channel *ch;
576 struct sr_dev_inst *sdi;
577 struct dev_context *devc;
578 struct sr_datafeed_packet packet;
580 struct sr_datafeed_analog analog;
581 struct sr_analog_encoding encoding;
582 struct sr_analog_meaning meaning;
583 struct sr_analog_spec spec;
591 if (!(sdi = cb_data))
594 if (!(devc = sdi->priv))
597 ch = devc->current_channel->data;
600 * Send "frame begin" packet upon reception of data for the
601 * first enabled channel.
603 if (devc->current_channel == devc->enabled_channels) {
604 packet.type = SR_DF_FRAME_BEGIN;
605 sr_session_send(sdi, &packet);
608 if (ch->type != SR_CHANNEL_ANALOG)
611 /* Pass on the received data of the channel(s). */
612 if (sr_scpi_read_data(sdi->conn, buf, 4) != 4) {
613 sr_err("Reading header failed.");
617 if (sr_scpi_get_block(sdi->conn, NULL, &data) != SR_OK) {
619 g_byte_array_free(data, TRUE);
623 analog.encoding = &encoding;
624 analog.meaning = &meaning;
627 if (lecroy_waveform_to_analog(data, &analog) != SR_OK)
630 meaning.channels = g_slist_append(NULL, ch);
631 packet.payload = &analog;
632 packet.type = SR_DF_ANALOG;
633 sr_session_send(sdi, &packet);
635 g_byte_array_free(data, TRUE);
638 g_slist_free(meaning.channels);
642 * Advance to the next enabled channel. When data for all enabled
643 * channels was received, then flush potentially queued logic data,
644 * and send the "frame end" packet.
646 if (devc->current_channel->next) {
647 devc->current_channel = devc->current_channel->next;
648 lecroy_xstream_request_data(sdi);
652 packet.type = SR_DF_FRAME_END;
653 sr_session_send(sdi, &packet);
656 * End of frame was reached. Stop acquisition after the specified
657 * number of frames, or continue reception by starting over at
658 * the first enabled channel.
660 if (++devc->num_frames == devc->frame_limit) {
661 sr_dev_acquisition_stop(sdi);
663 devc->current_channel = devc->enabled_channels;
664 lecroy_xstream_request_data(sdi);