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siglent-sds: Fix, USB connection problem partially solved, bug #1130
[libsigrok.git] / src / hardware / siglent-sds / protocol.c
CommitLineData
89f5fab9 1/*
2 * This file is part of the libsigrok project.
3 *
b3360671 4 * Copyright (C) 2016 mhooijboer <marchelh@gmail.com>
b3360671 5 * Copyright (C) 2012 Martin Ling <martin-git@earth.li>
6 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
7 * Copyright (C) 2013 Mathias Grimmberger <mgri@zaphod.sax.de>
89f5fab9 8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
b3360671 23#define _GNU_SOURCE
24
89f5fab9 25#include <config.h>
b3360671 26#include <errno.h>
27#include <glib.h>
b3360671 28#include <math.h>
29#include <stdlib.h>
30#include <stdarg.h>
31#include <string.h>
32#include <time.h>
33#include <unistd.h>
b3360671 34#include <libsigrok/libsigrok.h>
35#include "libsigrok-internal.h"
36#include "scpi.h"
89f5fab9 37#include "protocol.h"
38
3e7fb88f 39/* Set the next event to wait for in siglent_sds_receive(). */
b3360671 40static void siglent_sds_set_wait_event(struct dev_context *devc, enum wait_events event)
41{
b3360671 42 if (event == WAIT_STOP) {
43 devc->wait_status = 2;
44 } else {
45 devc->wait_status = 1;
46 devc->wait_event = event;
47 }
48}
49
50/*
51 * Waiting for a event will return a timeout after 2 to 3 seconds in order
52 * to not block the application.
53 */
54static int siglent_sds_event_wait(const struct sr_dev_inst *sdi)
55{
56 char *buf;
57 long s;
58 int out;
59 struct dev_context *devc;
60 time_t start;
61
62 if (!(devc = sdi->priv))
63 return SR_ERR;
64
65 start = time(NULL);
66
3e7fb88f 67 s = 10000; /* Sleep time for status refresh. */
b3360671 68 if (devc->wait_status == 1) {
69 do {
70 if (time(NULL) - start >= 3) {
3e7fb88f 71 sr_dbg("Timeout waiting for trigger.");
b3360671 72 return SR_ERR_TIMEOUT;
73 }
74
75 if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
76 return SR_ERR;
77 sr_atoi(buf, &out);
78 g_usleep(s);
79 } while (out == 0);
b3360671 80
3e7fb88f
UH		 81 sr_dbg("Device triggered.");
82
83 if ((devc->timebase < 0.51) && (devc->timebase > 0.99e-6)) {
84 /*
85 * Timebase * num hor. divs * 85(%) * 1e6(usecs) / 100
86 * -> 85 percent of sweep time
87 */
88 s = (devc->timebase * devc->model->series->num_horizontal_divs * 1000);
89 sr_spew("Sleeping for %ld usecs after trigger, "
90 "to let the acq buffer in the device fill", s);
91 g_usleep(s);
b3360671 92 }
93 }
94 if (devc->wait_status == 2) {
95 do {
96 if (time(NULL) - start >= 3) {
3e7fb88f 97 sr_dbg("Timeout waiting for trigger.");
b3360671 98 return SR_ERR_TIMEOUT;
99 }
100 if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
101 return SR_ERR;
102 sr_atoi(buf, &out);
103 g_usleep(s);
104 /* XXX
105 * Now this loop condition looks suspicious! A bitwise
106 * OR of a variable and a non-zero literal should be
107 * non-zero. Logical AND of several non-zero values
108 * should be non-zero. Are many parts of the condition
109 * not taking effect? Was some different condition meant
110 * to get encoded? This needs review, and adjustment.
111 */
112 } while ((out | DEVICE_STATE_TRIG_RDY && out | DEVICE_STATE_DATA_ACQ) && out | DEVICE_STATE_STOPPED);
3e7fb88f 113 sr_dbg("Device triggerd 2.");
b3360671 114 siglent_sds_set_wait_event(devc, WAIT_NONE);
115 }
116
117 return SR_OK;
118}
119
120static int siglent_sds_trigger_wait(const struct sr_dev_inst *sdi)
121{
122 struct dev_context *devc;
123
124 if (!(devc = sdi->priv))
125 return SR_ERR;
126 return siglent_sds_event_wait(sdi);
127}
128
3e7fb88f 129/* Wait for scope to got to "Stop" in single shot mode. */
b3360671 130static int siglent_sds_stop_wait(const struct sr_dev_inst *sdi)
131{
b3360671 132 return siglent_sds_event_wait(sdi);
133}
134
135/* Send a configuration setting. */
136SR_PRIV int siglent_sds_config_set(const struct sr_dev_inst *sdi, const char *format, ...)
137{
138 va_list args;
139 int ret;
140
141 va_start(args, format);
142 ret = sr_scpi_send_variadic(sdi->conn, format, args);
143 va_end(args);
144
3e7fb88f 145 return ret;
b3360671 146}
147
3e7fb88f 148/* Start capturing a new frameset. */
b3360671 149SR_PRIV int siglent_sds_capture_start(const struct sr_dev_inst *sdi)
150{
151 struct dev_context *devc;
152
153 if (!(devc = sdi->priv))
154 return SR_ERR;
155
156 switch (devc->model->series->protocol) {
157 case SPO_MODEL:
158 if (devc->data_source == DATA_SOURCE_SCREEN) {
159 char *buf;
160 int out;
161
162 sr_dbg("Starting data capture for active frameset %" PRIu64 " of %" PRIu64,
163 devc->num_frames + 1, devc->limit_frames);
164 if (siglent_sds_config_set(sdi, "ARM") != SR_OK)
165 return SR_ERR;
166 if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
167 return SR_ERR;
168 sr_atoi(buf, &out);
169 if (out == DEVICE_STATE_TRIG_RDY) {
170 siglent_sds_set_wait_event(devc, WAIT_TRIGGER);
171 } else if (out == DEVICE_STATE_TRIG_RDY + 1) {
3e7fb88f 172 sr_spew("Device triggered.");
b3360671 173 siglent_sds_set_wait_event(devc, WAIT_BLOCK);
174 return SR_OK;
175 } else {
3e7fb88f 176 sr_spew("Device did not enter ARM mode.");
b3360671 177 return SR_ERR;
178 }
3e7fb88f 179 } else { /* TODO: Implement history retrieval. */
b3360671 180 unsigned int framecount;
181 char buf[200];
182 int ret;
183
3e7fb88f 184 sr_dbg("Starting data capture for history frameset.");
b3360671 185 if (siglent_sds_config_set(sdi, "FPAR?") != SR_OK)
186 return SR_ERR;
187 ret = sr_scpi_read_data(sdi->conn, buf, 200);
188 if (ret < 0) {
189 sr_err("Read error while reading data header.");
190 return SR_ERR;
191 }
192 memcpy(&framecount, buf + 40, 4);
3e7fb88f 193 if (devc->limit_frames > framecount)
e5896840 194 sr_err("Frame limit higher than frames in buffer of device!");
3e7fb88f 195 else if (devc->limit_frames == 0)
b3360671 196 devc->limit_frames = framecount;
b3360671 197 sr_dbg("Starting data capture for history frameset %" PRIu64 " of %" PRIu64,
198 devc->num_frames + 1, devc->limit_frames);
199 if (siglent_sds_config_set(sdi, "FRAM %i", devc->num_frames + 1) != SR_OK)
200 return SR_ERR;
201 if (siglent_sds_channel_start(sdi) != SR_OK)
202 return SR_ERR;
203 siglent_sds_set_wait_event(devc, WAIT_STOP);
204 }
205 break;
206 case NON_SPO_MODEL:
207 siglent_sds_set_wait_event(devc, WAIT_TRIGGER);
208 break;
209 }
210
211 return SR_OK;
212}
213
3e7fb88f 214/* Start reading data from the current channel. */
b3360671 215SR_PRIV int siglent_sds_channel_start(const struct sr_dev_inst *sdi)
89f5fab9 216{
89f5fab9 217 struct dev_context *devc;
b3360671 218 struct sr_channel *ch;
219
220 if (!(devc = sdi->priv))
221 return SR_ERR;
222
223 ch = devc->channel_entry->data;
224
3e7fb88f 225 sr_dbg("Starting reading data from channel %d.", ch->index + 1);
b3360671 226
227 switch (devc->model->series->protocol) {
228 case NON_SPO_MODEL:
229 case SPO_MODEL:
230 if (ch->type == SR_CHANNEL_LOGIC) {
231 if (sr_scpi_send(sdi->conn, "D%d:WF?",
232 ch->index + 1) != SR_OK)
233 return SR_ERR;
234 } else {
235 if (sr_scpi_send(sdi->conn, "C%d:WF? ALL",
236 ch->index + 1) != SR_OK)
237 return SR_ERR;
238 }
239 siglent_sds_set_wait_event(devc, WAIT_NONE);
240 break;
241 }
242
243 siglent_sds_set_wait_event(devc, WAIT_BLOCK);
244
245 devc->num_channel_bytes = 0;
246 devc->num_header_bytes = 0;
247 devc->num_block_bytes = 0;
248
249 return SR_OK;
250}
251
3e7fb88f 252/* Read the header of a data block. */
fe06061d 253static int siglent_sds_read_header(struct sr_dev_inst *sdi)
b3360671 254{
255 struct sr_scpi_dev_inst *scpi = sdi->conn;
256 struct dev_context *devc = sdi->priv;
257 char *buf = (char *)devc->buffer;
e5896840
UH		 258 int ret, desc_length;
259 int block_offset = 15; /* Offset for descriptor block. */
7e776c70 260 long data_length = 0;
b3360671 261
3e7fb88f 262 /* Read header from device. */
7e776c70 263 ret = sr_scpi_read_data(scpi, buf, SIGLENT_HEADER_SIZE);
264 if (ret < SIGLENT_HEADER_SIZE) {
b3360671 265 sr_err("Read error while reading data header.");
266 return SR_ERR;
267 }
3e7fb88f 268 sr_dbg("Device returned %i bytes.", ret);
b3360671 269 devc->num_header_bytes += ret;
e5896840 270 buf += block_offset; /* Skip to start descriptor block. */
b3360671 271
3e7fb88f 272 /* Parse WaveDescriptor header. */
e5896840 273 memcpy(&desc_length, buf + 36, 4); /* Descriptor block length */
7e776c70 274 memcpy(&data_length, buf + 60, 4); /* Data block length */
b3360671 275
e5896840 276 devc->block_header_size = desc_length + 15;
7e776c70 277 devc->num_samples = data_length;
3e7fb88f 278
e5896840 279 sr_dbg("Received data block header: '%s' -> block length %d.", buf, ret);
3e7fb88f 280
b3360671 281 return ret;
282}
283
284SR_PRIV int siglent_sds_receive(int fd, int revents, void *cb_data)
285{
286 struct sr_dev_inst *sdi;
287 struct sr_scpi_dev_inst *scpi;
288 struct dev_context *devc;
289 struct sr_datafeed_packet packet;
290 struct sr_datafeed_analog analog;
291 struct sr_analog_encoding encoding;
292 struct sr_analog_meaning meaning;
293 struct sr_analog_spec spec;
294 struct sr_datafeed_logic logic;
295 int len, i;
296 struct sr_channel *ch;
89f5fab9 297
298 (void)fd;
299
300 if (!(sdi = cb_data))
301 return TRUE;
302
303 if (!(devc = sdi->priv))
304 return TRUE;
305
b3360671 306 scpi = sdi->conn;
307
308 if (!(revents == G_IO_IN || revents == 0))
309 return TRUE;
310
b3360671 311 switch (devc->wait_event) {
312 case WAIT_NONE:
313 break;
314 case WAIT_TRIGGER:
315 if (siglent_sds_trigger_wait(sdi) != SR_OK)
316 return TRUE;
317 if (siglent_sds_channel_start(sdi) != SR_OK)
318 return TRUE;
319 return TRUE;
320 case WAIT_BLOCK:
321 if (siglent_sds_channel_start(sdi) != SR_OK)
322 return TRUE;
323 break;
324 case WAIT_STOP:
3e7fb88f 325 if (siglent_sds_stop_wait(sdi) != SR_OK)
b3360671 326 return TRUE;
3e7fb88f 327 if (siglent_sds_channel_start(sdi) != SR_OK)
b3360671 328 return TRUE;
b3360671 329 return TRUE;
330 default:
3e7fb88f 331 sr_err("BUG: Unknown event target encountered.");
b3360671 332 break;
333 }
b3360671 334 ch = devc->channel_entry->data;
7e776c70 335 len = 0;
b3360671 336
337 if (devc->num_block_bytes == 0) {
338
7e776c70 339 if (devc->samplerate >= 14000000) {
3e7fb88f
UH		 340 sr_err("Device memory depth is set to 14Mpts, so please be patient.");
341 g_usleep(4900000); /* Sleep for large memory set. */
b3360671 342 }
7e776c70 343 if (sr_scpi_read_begin(scpi) != SR_OK)
344 return TRUE;
3e7fb88f 345 sr_dbg("New block header expected.");
fe06061d 346 len = siglent_sds_read_header(sdi);
b3360671 347 if (len == 0)
348 /* Still reading the header. */
349 return TRUE;
350 if (len == -1) {
351 sr_err("Read error, aborting capture.");
352 packet.type = SR_DF_FRAME_END;
353 sr_session_send(sdi, &packet);
354 sdi->driver->dev_acquisition_stop(sdi);
355 return TRUE;
356 }
7e776c70 357 devc->num_block_bytes = 0;
b3360671 358 devc->num_block_read = 0;
359 }
360
b3360671 361 if (len == -1) {
362 sr_err("Read error, aborting capture.");
363 packet.type = SR_DF_FRAME_END;
364 sr_session_send(sdi, &packet);
365 sdi->driver->dev_acquisition_stop(sdi);
366 return TRUE;
89f5fab9 367 }
368
7e776c70 369 while (devc->num_block_bytes < devc->num_samples) {
370 len = sr_scpi_read_data(scpi, (char *)devc->buffer, devc->num_samples);
371 if (len == -1) {
372 sr_err("Read error, aborting capture.");
b3360671 373 packet.type = SR_DF_FRAME_END;
374 sr_session_send(sdi, &packet);
375 sdi->driver->dev_acquisition_stop(sdi);
376 return TRUE;
377 }
7e776c70 378 devc->num_block_read += 1;
379 devc->num_block_bytes += len;
380 if (devc->num_block_bytes >= devc->num_samples ) {
381 /* Offset the data block buffer past the IEEE header and description header. */
382 devc->buffer += devc->block_header_size;
383 len = devc->num_samples;
384 }
385 sr_dbg("Received block: %i, %d bytes.", devc->num_block_read, len);
386 if (ch->type == SR_CHANNEL_ANALOG) {
387 float vdiv = devc->vdiv[ch->index];
388 float offset = devc->vert_offset[ch->index];
389 GArray *float_data;
390 static GArray *data;
391 float voltage, vdivlog;
392 int digits;
393
394 data = g_array_sized_new(FALSE, FALSE, sizeof(uint8_t), len);
395 g_array_append_vals(data, devc->buffer, len);
396 float_data = g_array_new(FALSE, FALSE, sizeof(float));
397 for (i = 0; i < len; i++) {
398 voltage = (float)g_array_index(data, int8_t, i) / 25;
399 voltage = ((vdiv * voltage) - offset);
400 g_array_append_val(float_data, voltage);
401 }
402 vdivlog = log10f(vdiv);
403 digits = -(int) vdivlog + (vdivlog < 0.0);
404 sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
405 analog.meaning->channels = g_slist_append(NULL, ch);
406 analog.num_samples = float_data->len;
407 analog.data = (float *)float_data->data;
408 analog.meaning->mq = SR_MQ_VOLTAGE;
409 analog.meaning->unit = SR_UNIT_VOLT;
410 analog.meaning->mqflags = 0;
411 packet.type = SR_DF_ANALOG;
412 packet.payload = &analog;
413 sr_session_send(sdi, &packet);
414 g_slist_free(analog.meaning->channels);
415 g_array_free(data, TRUE);
416 } else {
417 logic.length = len;
418 logic.unitsize = 1;
419 logic.data = devc->buffer;
420 packet.type = SR_DF_LOGIC;
421 packet.payload = &logic;
422 sr_session_send(sdi, &packet);
423 }
424
425 if (devc->num_samples == devc->num_block_bytes) {
426 sr_dbg("Transfer has been completed.");
427 devc->num_header_bytes = 0;
428 devc->num_block_bytes = 0;
429 if (!sr_scpi_read_complete(scpi)) {
430 sr_err("Read should have been completed.");
431 packet.type = SR_DF_FRAME_END;
432 sr_session_send(sdi, &packet);
433 sdi->driver->dev_acquisition_stop(sdi);
434 return TRUE;
435 }
436 devc->num_block_read = 0;
437 } else {
438 sr_dbg("%" PRIu64 " of %" PRIu64 " block bytes read.",
439 devc->num_block_bytes, devc->num_samples);
440 }
b3360671 441 }
7e776c70 442
b3360671 443 if (devc->channel_entry->next) {
444 /* We got the frame for this channel, now get the next channel. */
445 devc->channel_entry = devc->channel_entry->next;
446 siglent_sds_channel_start(sdi);
447 } else {
448 /* Done with this frame. */
449 packet.type = SR_DF_FRAME_END;
450 sr_session_send(sdi, &packet);
451
452 if (++devc->num_frames == devc->limit_frames) {
453 /* Last frame, stop capture. */
454 sdi->driver->dev_acquisition_stop(sdi);
455 } else {
456 /* Get the next frame, starting with the first channel. */
457 devc->channel_entry = devc->enabled_channels;
458 siglent_sds_capture_start(sdi);
459
460 /* Start of next frame. */
461 packet.type = SR_DF_FRAME_BEGIN;
462 sr_session_send(sdi, &packet);
463 }
464 }
3e7fb88f 465
89f5fab9 466 return TRUE;
467}
b3360671 468
469SR_PRIV int siglent_sds_get_dev_cfg(const struct sr_dev_inst *sdi)
470{
471 struct dev_context *devc;
472 struct sr_channel *ch;
e5896840 473 char *cmd, *response;
b3360671 474 unsigned int i;
e5896840 475 int res, num_tokens;
b3360671 476 gchar **tokens;
fdf0744f 477 int len;
478 float trigger_pos;
b3360671 479
480 devc = sdi->priv;
481
482 /* Analog channel state. */
483 for (i = 0; i < devc->model->analog_channels; i++) {
484 cmd = g_strdup_printf("C%i:TRA?", i + 1);
485 res = sr_scpi_get_bool(sdi->conn, cmd, &devc->analog_channels[i]);
486 g_free(cmd);
487 if (res != SR_OK)
488 return SR_ERR;
489 ch = g_slist_nth_data(sdi->channels, i);
490 ch->enabled = devc->analog_channels[i];
491 }
492 sr_dbg("Current analog channel state:");
493 for (i = 0; i < devc->model->analog_channels; i++)
494 sr_dbg("CH%d %s", i + 1, devc->analog_channels[i] ? "On" : "Off");
495
496 /* Digital channel state. */
497 if (devc->model->has_digital) {
498 gboolean status;
499
3e7fb88f 500 sr_dbg("Check logic analyzer channel state.");
b3360671 501 devc->la_enabled = FALSE;
502 cmd = g_strdup_printf("DGST?");
503 res = sr_scpi_get_bool(sdi->conn, cmd, &status);
504 g_free(cmd);
505 if (res != SR_OK)
506 return SR_ERR;
3e7fb88f 507 sr_dbg("Logic analyzer status: %s", status ? "On" : "Off");
b3360671 508 if (status) {
509 devc->la_enabled = TRUE;
510 for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
511 cmd = g_strdup_printf("D%i:DGCH?", i);
512 res = sr_scpi_get_bool(sdi->conn, cmd, &devc->digital_channels[i]);
513 g_free(cmd);
514 if (res != SR_OK)
515 return SR_ERR;
516 ch = g_slist_nth_data(sdi->channels, i + devc->model->analog_channels);
517 ch->enabled = devc->digital_channels[i];
518 sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "On" : "Off");
519 }
520 } else {
521 for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
522 ch = g_slist_nth_data(sdi->channels, i + devc->model->analog_channels);
523 devc->digital_channels[i] = FALSE;
524 ch->enabled = devc->digital_channels[i];
525 sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "On" : "Off");
526 }
527 }
528 }
529
530 /* Timebase. */
531 if (sr_scpi_get_float(sdi->conn, ":TDIV?", &devc->timebase) != SR_OK)
532 return SR_ERR;
3e7fb88f 533 sr_dbg("Current timebase: %g.", devc->timebase);
b3360671 534
535 /* Probe attenuation. */
536 for (i = 0; i < devc->model->analog_channels; i++) {
537 cmd = g_strdup_printf("C%d:ATTN?", i + 1);
538 res = sr_scpi_get_float(sdi->conn, cmd, &devc->attenuation[i]);
539 g_free(cmd);
540 if (res != SR_OK)
541 return SR_ERR;
542 }
543 sr_dbg("Current probe attenuation:");
544 for (i = 0; i < devc->model->analog_channels; i++)
545 sr_dbg("CH%d %g", i + 1, devc->attenuation[i]);
546
547 /* Vertical gain and offset. */
548 if (siglent_sds_get_dev_cfg_vertical(sdi) != SR_OK)
549 return SR_ERR;
550
551 /* Coupling. */
552 for (i = 0; i < devc->model->analog_channels; i++) {
553 cmd = g_strdup_printf("C%d:CPL?", i + 1);
554 res = sr_scpi_get_string(sdi->conn, cmd, &devc->coupling[i]);
555 g_free(cmd);
556 if (res != SR_OK)
557 return SR_ERR;
558 }
559
560 sr_dbg("Current coupling:");
561 for (i = 0; i < devc->model->analog_channels; i++)
562 sr_dbg("CH%d %s", i + 1, devc->coupling[i]);
563
564 /* Trigger source. */
565 response = NULL;
566 tokens = NULL;
567 if (sr_scpi_get_string(sdi->conn, "TRSE?", &response) != SR_OK)
568 return SR_ERR;
569 tokens = g_strsplit(response, ",", 0);
570 for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++);
571 if (num_tokens < 4) {
572 sr_dbg("IDN response not according to spec: %80.s.", response);
573 g_strfreev(tokens);
574 g_free(response);
575 return SR_ERR_DATA;
576 }
577 g_free(response);
578 devc->trigger_source = g_strstrip(g_strdup(tokens[2]));
3e7fb88f 579 sr_dbg("Current trigger source: %s.", devc->trigger_source);
b3360671 580
3e7fb88f 581 /* TODO: Horizontal trigger position. */
fdf0744f 582 response = "";
583 trigger_pos = 0;
584 if (sr_scpi_get_string(sdi->conn, g_strdup_printf("%s:TRDL?", devc->trigger_source), &response) != SR_OK)
585 return SR_ERR;
586 len = strlen(response);
587 if (!g_ascii_strcasecmp(response + (len - 2), "us")) {
588 trigger_pos = atof(response) / SR_GHZ(1);
589 sr_dbg("Current trigger position us %s.", response);
590 } else if (!g_ascii_strcasecmp(response + (len - 2), "ns")) {
591 trigger_pos = atof(response) / SR_MHZ(1);
592 sr_dbg("Current trigger position ms %s.", response);
593 } else if (!g_ascii_strcasecmp(response + (len - 2), "ms")) {
594 trigger_pos = atof(response) / SR_KHZ(1);
595 sr_dbg("Current trigger position ns %s.", response);
596 } else if (!g_ascii_strcasecmp(response + (len - 2), "s")) {
597 trigger_pos = atof(response);
598 sr_dbg("Current trigger position s %s.", response);
599 };
600 devc->horiz_triggerpos = trigger_pos;
601
602 sr_dbg("Current horizontal trigger position %.10f", devc->horiz_triggerpos);
b3360671 603
604 /* Trigger slope. */
605 cmd = g_strdup_printf("%s:TRSL?", devc->trigger_source);
606 res = sr_scpi_get_string(sdi->conn, cmd, &devc->trigger_slope);
607 g_free(cmd);
608 if (res != SR_OK)
609 return SR_ERR;
3e7fb88f 610 sr_dbg("Current trigger slope: %s.", devc->trigger_slope);
b3360671 611
612 /* Trigger level. */
613 cmd = g_strdup_printf("%s:TRLV?", devc->trigger_source);
614 res = sr_scpi_get_float(sdi->conn, cmd, &devc->trigger_level);
615 g_free(cmd);
616 if (res != SR_OK)
617 return SR_ERR;
3e7fb88f 618 sr_dbg("Current trigger level: %g.", devc->trigger_level);
b3360671 619 return SR_OK;
620}
621
622SR_PRIV int siglent_sds_get_dev_cfg_vertical(const struct sr_dev_inst *sdi)
623{
624 struct dev_context *devc;
625 char *cmd;
626 unsigned int i;
627 int res;
628
629 devc = sdi->priv;
630
631 /* Vertical gain. */
632 for (i = 0; i < devc->model->analog_channels; i++) {
633 cmd = g_strdup_printf("C%d:VDIV?", i + 1);
634 res = sr_scpi_get_float(sdi->conn, cmd, &devc->vdiv[i]);
635 g_free(cmd);
636 if (res != SR_OK)
637 return SR_ERR;
638 }
639 sr_dbg("Current vertical gain:");
640 for (i = 0; i < devc->model->analog_channels; i++)
641 sr_dbg("CH%d %g", i + 1, devc->vdiv[i]);
642
643 /* Vertical offset. */
644 for (i = 0; i < devc->model->analog_channels; i++) {
645 cmd = g_strdup_printf("C%d:OFST?", i + 1);
646 res = sr_scpi_get_float(sdi->conn, cmd, &devc->vert_offset[i]);
647 g_free(cmd);
648 if (res != SR_OK)
649 return SR_ERR;
650 }
651 sr_dbg("Current vertical offset:");
652 for (i = 0; i < devc->model->analog_channels; i++)
653 sr_dbg("CH%d %g", i + 1, devc->vert_offset[i]);
654
655 return SR_OK;
656}
657
658SR_PRIV int siglent_sds_get_dev_cfg_horizontal(const struct sr_dev_inst *sdi)
659{
660 struct dev_context *devc;
661 char *cmd;
662 int res;
e5896840
UH		 663 char *sample_points_string;
664 float samplerate_scope, fvalue;
b3360671 665 char *first, *concat;
666
667 devc = sdi->priv;
668 cmd = g_strdup_printf("SANU? C1");
e5896840 669 res = sr_scpi_get_string(sdi->conn, cmd, &sample_points_string);
b3360671 670 g_free(cmd);
671 if (res != SR_OK)
672 return SR_ERR;
e5896840
UH		 673 if (g_strstr_len(sample_points_string, -1, "Mpts") != NULL) {
674 sample_points_string[strlen(sample_points_string) - 4] = '\0';
b3360671 675
e5896840
UH		 676 if (g_strstr_len(sample_points_string, -1, ".") != NULL) {
677 first = strtok(sample_points_string, ".");
b3360671 678 concat = strcat(first, strtok(NULL, "."));
679 if (sr_atof_ascii(concat, &fvalue) != SR_OK || fvalue == 0.0) {
680 sr_dbg("Invalid float converted from scope response.");
681 return SR_ERR;
682 }
683 } else {
e5896840 684 if (sr_atof_ascii(sample_points_string, &fvalue) != SR_OK || fvalue == 0.0) {
b3360671 685 sr_dbg("Invalid float converted from scope response.");
686 return SR_ERR;
687 }
688 }
e5896840 689 samplerate_scope = fvalue * 100000;
b3360671 690 } else {
e5896840
UH		 691 sample_points_string[strlen(sample_points_string) - 4] = '\0';
692 if (sr_atof_ascii(sample_points_string, &fvalue) != SR_OK || fvalue == 0.0) {
b3360671 693 sr_dbg("Invalid float converted from scope response.");
694 return SR_ERR;
695 }
e5896840 696 samplerate_scope = fvalue * 1000;
b3360671 697 }
3e7fb88f 698 /* Get the timebase. */
b3360671 699 if (sr_scpi_get_float(sdi->conn, ":TDIV?", &devc->timebase) != SR_OK)
700 return SR_ERR;
3e7fb88f 701 sr_dbg("Current timebase: %g.", devc->timebase);
e5896840 702 devc->samplerate = samplerate_scope / (devc->timebase * devc->model->series->num_horizontal_divs);
3e7fb88f 703
b3360671 704 return SR_OK;
705}
Hardware access and backend lib