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siglent-sds: Fix multiple compiler warnings.
[libsigrok.git] / src / hardware / siglent-sds / protocol.c
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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>
28#include <glib-2.0/glib/gmacros.h>
29#include <glib-2.0/glib/gmain.h>
30#include <math.h>
31#include <stdlib.h>
32#include <stdarg.h>
33#include <string.h>
34#include <time.h>
35#include <unistd.h>
b3360671 36#include <libsigrok/libsigrok.h>
37#include "libsigrok-internal.h"
38#include "scpi.h"
89f5fab9 39#include "protocol.h"
40
3e7fb88f 41/* Set the next event to wait for in siglent_sds_receive(). */
b3360671 42static void siglent_sds_set_wait_event(struct dev_context *devc, enum wait_events event)
43{
b3360671 44 if (event == WAIT_STOP) {
45 devc->wait_status = 2;
46 } else {
47 devc->wait_status = 1;
48 devc->wait_event = event;
49 }
50}
51
52/*
53 * Waiting for a event will return a timeout after 2 to 3 seconds in order
54 * to not block the application.
55 */
56static int siglent_sds_event_wait(const struct sr_dev_inst *sdi)
57{
58 char *buf;
59 long s;
60 int out;
61 struct dev_context *devc;
62 time_t start;
63
64 if (!(devc = sdi->priv))
65 return SR_ERR;
66
67 start = time(NULL);
68
3e7fb88f 69 s = 10000; /* Sleep time for status refresh. */
b3360671 70 if (devc->wait_status == 1) {
71 do {
72 if (time(NULL) - start >= 3) {
3e7fb88f 73 sr_dbg("Timeout waiting for trigger.");
b3360671 74 return SR_ERR_TIMEOUT;
75 }
76
77 if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
78 return SR_ERR;
79 sr_atoi(buf, &out);
80 g_usleep(s);
81 } while (out == 0);
b3360671 82
3e7fb88f
UH		 83 sr_dbg("Device triggered.");
84
85 if ((devc->timebase < 0.51) && (devc->timebase > 0.99e-6)) {
86 /*
87 * Timebase * num hor. divs * 85(%) * 1e6(usecs) / 100
88 * -> 85 percent of sweep time
89 */
90 s = (devc->timebase * devc->model->series->num_horizontal_divs * 1000);
91 sr_spew("Sleeping for %ld usecs after trigger, "
92 "to let the acq buffer in the device fill", s);
93 g_usleep(s);
b3360671 94 }
95 }
96 if (devc->wait_status == 2) {
97 do {
98 if (time(NULL) - start >= 3) {
3e7fb88f 99 sr_dbg("Timeout waiting for trigger.");
b3360671 100 return SR_ERR_TIMEOUT;
101 }
102 if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
103 return SR_ERR;
104 sr_atoi(buf, &out);
105 g_usleep(s);
106 /* XXX
107 * Now this loop condition looks suspicious! A bitwise
108 * OR of a variable and a non-zero literal should be
109 * non-zero. Logical AND of several non-zero values
110 * should be non-zero. Are many parts of the condition
111 * not taking effect? Was some different condition meant
112 * to get encoded? This needs review, and adjustment.
113 */
114 } while ((out | DEVICE_STATE_TRIG_RDY && out | DEVICE_STATE_DATA_ACQ) && out | DEVICE_STATE_STOPPED);
3e7fb88f 115 sr_dbg("Device triggerd 2.");
b3360671 116 siglent_sds_set_wait_event(devc, WAIT_NONE);
117 }
118
119 return SR_OK;
120}
121
122static int siglent_sds_trigger_wait(const struct sr_dev_inst *sdi)
123{
124 struct dev_context *devc;
125
126 if (!(devc = sdi->priv))
127 return SR_ERR;
128 return siglent_sds_event_wait(sdi);
129}
130
3e7fb88f 131/* Wait for scope to got to "Stop" in single shot mode. */
b3360671 132static int siglent_sds_stop_wait(const struct sr_dev_inst *sdi)
133{
b3360671 134 return siglent_sds_event_wait(sdi);
135}
136
137/* Send a configuration setting. */
138SR_PRIV int siglent_sds_config_set(const struct sr_dev_inst *sdi, const char *format, ...)
139{
140 va_list args;
141 int ret;
142
143 va_start(args, format);
144 ret = sr_scpi_send_variadic(sdi->conn, format, args);
145 va_end(args);
146
3e7fb88f 147 return ret;
b3360671 148}
149
3e7fb88f 150/* Start capturing a new frameset. */
b3360671 151SR_PRIV int siglent_sds_capture_start(const struct sr_dev_inst *sdi)
152{
153 struct dev_context *devc;
154
155 if (!(devc = sdi->priv))
156 return SR_ERR;
157
158 switch (devc->model->series->protocol) {
159 case SPO_MODEL:
160 if (devc->data_source == DATA_SOURCE_SCREEN) {
161 char *buf;
162 int out;
163
164 sr_dbg("Starting data capture for active frameset %" PRIu64 " of %" PRIu64,
165 devc->num_frames + 1, devc->limit_frames);
166 if (siglent_sds_config_set(sdi, "ARM") != SR_OK)
167 return SR_ERR;
168 if (sr_scpi_get_string(sdi->conn, ":INR?", &buf) != SR_OK)
169 return SR_ERR;
170 sr_atoi(buf, &out);
171 if (out == DEVICE_STATE_TRIG_RDY) {
172 siglent_sds_set_wait_event(devc, WAIT_TRIGGER);
173 } else if (out == DEVICE_STATE_TRIG_RDY + 1) {
3e7fb88f 174 sr_spew("Device triggered.");
b3360671 175 siglent_sds_set_wait_event(devc, WAIT_BLOCK);
176 return SR_OK;
177 } else {
3e7fb88f 178 sr_spew("Device did not enter ARM mode.");
b3360671 179 return SR_ERR;
180 }
3e7fb88f 181 } else { /* TODO: Implement history retrieval. */
b3360671 182 unsigned int framecount;
183 char buf[200];
184 int ret;
185
3e7fb88f 186 sr_dbg("Starting data capture for history frameset.");
b3360671 187 if (siglent_sds_config_set(sdi, "FPAR?") != SR_OK)
188 return SR_ERR;
189 ret = sr_scpi_read_data(sdi->conn, buf, 200);
190 if (ret < 0) {
191 sr_err("Read error while reading data header.");
192 return SR_ERR;
193 }
194 memcpy(&framecount, buf + 40, 4);
3e7fb88f 195 if (devc->limit_frames > framecount)
e5896840 196 sr_err("Frame limit higher than frames in buffer of device!");
3e7fb88f 197 else if (devc->limit_frames == 0)
b3360671 198 devc->limit_frames = framecount;
b3360671 199 sr_dbg("Starting data capture for history frameset %" PRIu64 " of %" PRIu64,
200 devc->num_frames + 1, devc->limit_frames);
201 if (siglent_sds_config_set(sdi, "FRAM %i", devc->num_frames + 1) != SR_OK)
202 return SR_ERR;
203 if (siglent_sds_channel_start(sdi) != SR_OK)
204 return SR_ERR;
205 siglent_sds_set_wait_event(devc, WAIT_STOP);
206 }
207 break;
208 case NON_SPO_MODEL:
209 siglent_sds_set_wait_event(devc, WAIT_TRIGGER);
210 break;
211 }
212
213 return SR_OK;
214}
215
3e7fb88f 216/* Start reading data from the current channel. */
b3360671 217SR_PRIV int siglent_sds_channel_start(const struct sr_dev_inst *sdi)
89f5fab9 218{
89f5fab9 219 struct dev_context *devc;
b3360671 220 struct sr_channel *ch;
221
222 if (!(devc = sdi->priv))
223 return SR_ERR;
224
225 ch = devc->channel_entry->data;
226
3e7fb88f 227 sr_dbg("Starting reading data from channel %d.", ch->index + 1);
b3360671 228
229 switch (devc->model->series->protocol) {
230 case NON_SPO_MODEL:
231 case SPO_MODEL:
232 if (ch->type == SR_CHANNEL_LOGIC) {
233 if (sr_scpi_send(sdi->conn, "D%d:WF?",
234 ch->index + 1) != SR_OK)
235 return SR_ERR;
236 } else {
237 if (sr_scpi_send(sdi->conn, "C%d:WF? ALL",
238 ch->index + 1) != SR_OK)
239 return SR_ERR;
240 }
241 siglent_sds_set_wait_event(devc, WAIT_NONE);
242 break;
243 }
244
245 siglent_sds_set_wait_event(devc, WAIT_BLOCK);
246
247 devc->num_channel_bytes = 0;
248 devc->num_header_bytes = 0;
249 devc->num_block_bytes = 0;
250
251 return SR_OK;
252}
253
3e7fb88f 254/* Read the header of a data block. */
b3360671 255static int siglent_sds_read_header(struct sr_dev_inst *sdi, int channelIndex)
256{
257 struct sr_scpi_dev_inst *scpi = sdi->conn;
258 struct dev_context *devc = sdi->priv;
259 char *buf = (char *)devc->buffer;
e5896840
UH		 260 int ret, desc_length;
261 int block_offset = 15; /* Offset for descriptor block. */
b3360671 262 long dataLength = 0;
263
3e7fb88f
UH		 264 /* Read header from device. */
265 ret = sr_scpi_read_data(scpi, buf + devc->num_header_bytes,
266 devc->model->series->buffer_samples);
b3360671 267 if (ret < 346) {
268 sr_err("Read error while reading data header.");
269 return SR_ERR;
270 }
3e7fb88f 271 sr_dbg("Device returned %i bytes.", ret);
b3360671 272 devc->num_header_bytes += ret;
e5896840 273 buf += block_offset; /* Skip to start descriptor block. */
b3360671 274
3e7fb88f 275 /* Parse WaveDescriptor header. */
e5896840 276 memcpy(&desc_length, buf + 36, 4); /* Descriptor block length */
3e7fb88f 277 memcpy(&dataLength, buf + 60, 4); /* Data block length */
b3360671 278
279 devc->vdiv[channelIndex] = 2;
280 devc->vert_offset[channelIndex] = 0;
e5896840 281 devc->block_header_size = desc_length + 15;
b3360671 282 ret = dataLength;
3e7fb88f 283
e5896840 284 sr_dbg("Received data block header: '%s' -> block length %d.", buf, ret);
3e7fb88f 285
b3360671 286 return ret;
287}
288
289SR_PRIV int siglent_sds_receive(int fd, int revents, void *cb_data)
290{
291 struct sr_dev_inst *sdi;
292 struct sr_scpi_dev_inst *scpi;
293 struct dev_context *devc;
294 struct sr_datafeed_packet packet;
295 struct sr_datafeed_analog analog;
296 struct sr_analog_encoding encoding;
297 struct sr_analog_meaning meaning;
298 struct sr_analog_spec spec;
299 struct sr_datafeed_logic logic;
300 int len, i;
301 struct sr_channel *ch;
302 gsize expected_data_bytes = 0;
303 char *memsize;
89f5fab9 304
305 (void)fd;
306
307 if (!(sdi = cb_data))
308 return TRUE;
309
310 if (!(devc = sdi->priv))
311 return TRUE;
312
b3360671 313 scpi = sdi->conn;
314
315 if (!(revents == G_IO_IN || revents == 0))
316 return TRUE;
317
318 memsize = NULL;
319 if (sr_scpi_get_string(sdi->conn, "MSIZ?", &memsize) != SR_OK)
320 return SR_ERR;
321
322 switch (devc->wait_event) {
323 case WAIT_NONE:
324 break;
325 case WAIT_TRIGGER:
326 if (siglent_sds_trigger_wait(sdi) != SR_OK)
327 return TRUE;
328 if (siglent_sds_channel_start(sdi) != SR_OK)
329 return TRUE;
330 return TRUE;
331 case WAIT_BLOCK:
332 if (siglent_sds_channel_start(sdi) != SR_OK)
333 return TRUE;
334 break;
335 case WAIT_STOP:
3e7fb88f 336 if (siglent_sds_stop_wait(sdi) != SR_OK)
b3360671 337 return TRUE;
3e7fb88f 338 if (siglent_sds_channel_start(sdi) != SR_OK)
b3360671 339 return TRUE;
b3360671 340 return TRUE;
341 default:
3e7fb88f 342 sr_err("BUG: Unknown event target encountered.");
b3360671 343 break;
344 }
345
346 ch = devc->channel_entry->data;
347
348 if (devc->num_block_bytes == 0) {
349
3e7fb88f
UH		 350 if (g_ascii_strcasecmp(memsize, "14M") == 0) {
351 sr_err("Device memory depth is set to 14Mpts, so please be patient.");
352 g_usleep(4900000); /* Sleep for large memory set. */
b3360671 353 }
3e7fb88f 354 sr_dbg("New block header expected.");
b3360671 355 len = siglent_sds_read_header(sdi, ch->index);
356 expected_data_bytes = len;
357 if (len == 0)
358 /* Still reading the header. */
359 return TRUE;
360 if (len == -1) {
361 sr_err("Read error, aborting capture.");
362 packet.type = SR_DF_FRAME_END;
363 sr_session_send(sdi, &packet);
364 sdi->driver->dev_acquisition_stop(sdi);
365 return TRUE;
366 }
367
368 if (devc->data_source == DATA_SOURCE_SCREEN
369 && (unsigned)len < expected_data_bytes) {
3e7fb88f 370 sr_dbg("Discarding short data block.");
b3360671 371 sr_scpi_read_data(scpi, (char *)devc->buffer, len + 1);
372 return TRUE;
373 }
374 devc->num_block_bytes = len;
375 devc->num_block_read = 0;
376 }
377
378 len = devc->num_block_bytes - devc->num_block_read;
379 if (len > ACQ_BUFFER_SIZE)
380 len = ACQ_BUFFER_SIZE;
381
3e7fb88f 382 /* Offset the data block buffer past the IEEE header and description header. */
e5896840 383 devc->buffer += devc->block_header_size;
b3360671 384
385 if (len == -1) {
386 sr_err("Read error, aborting capture.");
387 packet.type = SR_DF_FRAME_END;
388 sr_session_send(sdi, &packet);
389 sdi->driver->dev_acquisition_stop(sdi);
390 return TRUE;
89f5fab9 391 }
392
b3360671 393 sr_dbg("Received %d bytes.", len);
394
395 devc->num_block_read += len;
396
397 if (ch->type == SR_CHANNEL_ANALOG) {
398 float vdiv = devc->vdiv[ch->index];
399 float offset = devc->vert_offset[ch->index];
400 GArray *float_data;
401 static GArray *data;
e5896840 402 float voltage, vdivlog;
b3360671 403 int digits;
404
405 data = g_array_sized_new(FALSE, FALSE, sizeof(uint8_t), len);
406 g_array_append_vals(data, devc->buffer, len);
407 float_data = g_array_new(FALSE, FALSE, sizeof(float));
408 for (i = 0; i < len; i++) {
409 voltage = (float)g_array_index(data, int8_t, i) / 25;
410 voltage = ((vdiv * voltage) - offset);
411 g_array_append_val(float_data, voltage);
412 }
413 vdivlog = log10f(vdiv);
414 digits = -(int) vdivlog + (vdivlog < 0.0);
415 sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
416 analog.meaning->channels = g_slist_append(NULL, ch);
417 analog.num_samples = float_data->len;
418 analog.data = (float *)float_data->data;
419 analog.meaning->mq = SR_MQ_VOLTAGE;
420 analog.meaning->unit = SR_UNIT_VOLT;
421 analog.meaning->mqflags = 0;
422 packet.type = SR_DF_ANALOG;
423 packet.payload = &analog;
424 sr_session_send(sdi, &packet);
425 g_slist_free(analog.meaning->channels);
426 g_array_free(data, TRUE);
427 } else {
428 logic.length = len;
429 logic.unitsize = 1;
430 logic.data = devc->buffer;
431 packet.type = SR_DF_LOGIC;
432 packet.payload = &logic;
433 sr_session_send(sdi, &packet);
434 }
435
436 if (devc->num_block_read == devc->num_block_bytes) {
3e7fb88f
UH		 437 sr_dbg("Block has been completed.");
438 sr_dbg("Preparing for possible next block.");
b3360671 439 devc->num_header_bytes = 0;
440 devc->num_block_bytes = 0;
3e7fb88f 441 if (devc->data_source != DATA_SOURCE_SCREEN)
b3360671 442 siglent_sds_set_wait_event(devc, WAIT_BLOCK);
b3360671 443 if (!sr_scpi_read_complete(scpi)) {
3e7fb88f 444 sr_err("Read should have been completed.");
b3360671 445 packet.type = SR_DF_FRAME_END;
446 sr_session_send(sdi, &packet);
447 sdi->driver->dev_acquisition_stop(sdi);
448 return TRUE;
449 }
450 devc->num_block_read = 0;
451 } else {
3e7fb88f 452 sr_dbg("%" PRIu64 " of %" PRIu64 " block bytes read.",
b3360671 453 devc->num_block_read, devc->num_block_bytes);
454 }
455 devc->num_channel_bytes += len;
456 if (devc->num_channel_bytes < expected_data_bytes) {
457 /* Don't have the full data for this channel yet, re-run. */
458 return TRUE;
459 }
460 if (devc->channel_entry->next) {
461 /* We got the frame for this channel, now get the next channel. */
462 devc->channel_entry = devc->channel_entry->next;
463 siglent_sds_channel_start(sdi);
464 } else {
465 /* Done with this frame. */
466 packet.type = SR_DF_FRAME_END;
467 sr_session_send(sdi, &packet);
468
469 if (++devc->num_frames == devc->limit_frames) {
470 /* Last frame, stop capture. */
471 sdi->driver->dev_acquisition_stop(sdi);
472 } else {
473 /* Get the next frame, starting with the first channel. */
474 devc->channel_entry = devc->enabled_channels;
475 siglent_sds_capture_start(sdi);
476
477 /* Start of next frame. */
478 packet.type = SR_DF_FRAME_BEGIN;
479 sr_session_send(sdi, &packet);
480 }
481 }
3e7fb88f 482
89f5fab9 483 return TRUE;
484}
b3360671 485
486SR_PRIV int siglent_sds_get_dev_cfg(const struct sr_dev_inst *sdi)
487{
488 struct dev_context *devc;
489 struct sr_channel *ch;
e5896840 490 char *cmd, *response;
b3360671 491 unsigned int i;
e5896840 492 int res, num_tokens;
b3360671 493 gchar **tokens;
b3360671 494
495 devc = sdi->priv;
496
497 /* Analog channel state. */
498 for (i = 0; i < devc->model->analog_channels; i++) {
499 cmd = g_strdup_printf("C%i:TRA?", i + 1);
500 res = sr_scpi_get_bool(sdi->conn, cmd, &devc->analog_channels[i]);
501 g_free(cmd);
502 if (res != SR_OK)
503 return SR_ERR;
504 ch = g_slist_nth_data(sdi->channels, i);
505 ch->enabled = devc->analog_channels[i];
506 }
507 sr_dbg("Current analog channel state:");
508 for (i = 0; i < devc->model->analog_channels; i++)
509 sr_dbg("CH%d %s", i + 1, devc->analog_channels[i] ? "On" : "Off");
510
511 /* Digital channel state. */
512 if (devc->model->has_digital) {
513 gboolean status;
514
3e7fb88f 515 sr_dbg("Check logic analyzer channel state.");
b3360671 516 devc->la_enabled = FALSE;
517 cmd = g_strdup_printf("DGST?");
518 res = sr_scpi_get_bool(sdi->conn, cmd, &status);
519 g_free(cmd);
520 if (res != SR_OK)
521 return SR_ERR;
3e7fb88f 522 sr_dbg("Logic analyzer status: %s", status ? "On" : "Off");
b3360671 523 if (status) {
524 devc->la_enabled = TRUE;
525 for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
526 cmd = g_strdup_printf("D%i:DGCH?", i);
527 res = sr_scpi_get_bool(sdi->conn, cmd, &devc->digital_channels[i]);
528 g_free(cmd);
529 if (res != SR_OK)
530 return SR_ERR;
531 ch = g_slist_nth_data(sdi->channels, i + devc->model->analog_channels);
532 ch->enabled = devc->digital_channels[i];
533 sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "On" : "Off");
534 }
535 } else {
536 for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) {
537 ch = g_slist_nth_data(sdi->channels, i + devc->model->analog_channels);
538 devc->digital_channels[i] = FALSE;
539 ch->enabled = devc->digital_channels[i];
540 sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "On" : "Off");
541 }
542 }
543 }
544
545 /* Timebase. */
546 if (sr_scpi_get_float(sdi->conn, ":TDIV?", &devc->timebase) != SR_OK)
547 return SR_ERR;
3e7fb88f 548 sr_dbg("Current timebase: %g.", devc->timebase);
b3360671 549
550 /* Probe attenuation. */
551 for (i = 0; i < devc->model->analog_channels; i++) {
552 cmd = g_strdup_printf("C%d:ATTN?", i + 1);
553 res = sr_scpi_get_float(sdi->conn, cmd, &devc->attenuation[i]);
554 g_free(cmd);
555 if (res != SR_OK)
556 return SR_ERR;
557 }
558 sr_dbg("Current probe attenuation:");
559 for (i = 0; i < devc->model->analog_channels; i++)
560 sr_dbg("CH%d %g", i + 1, devc->attenuation[i]);
561
562 /* Vertical gain and offset. */
563 if (siglent_sds_get_dev_cfg_vertical(sdi) != SR_OK)
564 return SR_ERR;
565
566 /* Coupling. */
567 for (i = 0; i < devc->model->analog_channels; i++) {
568 cmd = g_strdup_printf("C%d:CPL?", i + 1);
569 res = sr_scpi_get_string(sdi->conn, cmd, &devc->coupling[i]);
570 g_free(cmd);
571 if (res != SR_OK)
572 return SR_ERR;
573 }
574
575 sr_dbg("Current coupling:");
576 for (i = 0; i < devc->model->analog_channels; i++)
577 sr_dbg("CH%d %s", i + 1, devc->coupling[i]);
578
579 /* Trigger source. */
580 response = NULL;
581 tokens = NULL;
582 if (sr_scpi_get_string(sdi->conn, "TRSE?", &response) != SR_OK)
583 return SR_ERR;
584 tokens = g_strsplit(response, ",", 0);
585 for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++);
586 if (num_tokens < 4) {
587 sr_dbg("IDN response not according to spec: %80.s.", response);
588 g_strfreev(tokens);
589 g_free(response);
590 return SR_ERR_DATA;
591 }
592 g_free(response);
593 devc->trigger_source = g_strstrip(g_strdup(tokens[2]));
3e7fb88f 594 sr_dbg("Current trigger source: %s.", devc->trigger_source);
b3360671 595
3e7fb88f 596 /* TODO: Horizontal trigger position. */
b3360671 597
598 devc->horiz_triggerpos = 0;
3e7fb88f 599 sr_dbg("Current horizontal trigger position: %g.", devc->horiz_triggerpos);
b3360671 600
601 /* Trigger slope. */
602 cmd = g_strdup_printf("%s:TRSL?", devc->trigger_source);
603 res = sr_scpi_get_string(sdi->conn, cmd, &devc->trigger_slope);
604 g_free(cmd);
605 if (res != SR_OK)
606 return SR_ERR;
3e7fb88f 607 sr_dbg("Current trigger slope: %s.", devc->trigger_slope);
b3360671 608
609 /* Trigger level. */
610 cmd = g_strdup_printf("%s:TRLV?", devc->trigger_source);
611 res = sr_scpi_get_float(sdi->conn, cmd, &devc->trigger_level);
612 g_free(cmd);
613 if (res != SR_OK)
614 return SR_ERR;
3e7fb88f 615 sr_dbg("Current trigger level: %g.", devc->trigger_level);
b3360671 616 return SR_OK;
617}
618
619SR_PRIV int siglent_sds_get_dev_cfg_vertical(const struct sr_dev_inst *sdi)
620{
621 struct dev_context *devc;
622 char *cmd;
623 unsigned int i;
624 int res;
625
626 devc = sdi->priv;
627
628 /* Vertical gain. */
629 for (i = 0; i < devc->model->analog_channels; i++) {
630 cmd = g_strdup_printf("C%d:VDIV?", i + 1);
631 res = sr_scpi_get_float(sdi->conn, cmd, &devc->vdiv[i]);
632 g_free(cmd);
633 if (res != SR_OK)
634 return SR_ERR;
635 }
636 sr_dbg("Current vertical gain:");
637 for (i = 0; i < devc->model->analog_channels; i++)
638 sr_dbg("CH%d %g", i + 1, devc->vdiv[i]);
639
640 /* Vertical offset. */
641 for (i = 0; i < devc->model->analog_channels; i++) {
642 cmd = g_strdup_printf("C%d:OFST?", i + 1);
643 res = sr_scpi_get_float(sdi->conn, cmd, &devc->vert_offset[i]);
644 g_free(cmd);
645 if (res != SR_OK)
646 return SR_ERR;
647 }
648 sr_dbg("Current vertical offset:");
649 for (i = 0; i < devc->model->analog_channels; i++)
650 sr_dbg("CH%d %g", i + 1, devc->vert_offset[i]);
651
652 return SR_OK;
653}
654
655SR_PRIV int siglent_sds_get_dev_cfg_horizontal(const struct sr_dev_inst *sdi)
656{
657 struct dev_context *devc;
658 char *cmd;
659 int res;
e5896840
UH		 660 char *sample_points_string;
661 float samplerate_scope, fvalue;
b3360671 662 char *first, *concat;
663
664 devc = sdi->priv;
665 cmd = g_strdup_printf("SANU? C1");
e5896840 666 res = sr_scpi_get_string(sdi->conn, cmd, &sample_points_string);
b3360671 667 g_free(cmd);
668 if (res != SR_OK)
669 return SR_ERR;
e5896840
UH		 670 if (g_strstr_len(sample_points_string, -1, "Mpts") != NULL) {
671 sample_points_string[strlen(sample_points_string) - 4] = '\0';
b3360671 672
e5896840
UH		 673 if (g_strstr_len(sample_points_string, -1, ".") != NULL) {
674 first = strtok(sample_points_string, ".");
b3360671 675 concat = strcat(first, strtok(NULL, "."));
676 if (sr_atof_ascii(concat, &fvalue) != SR_OK || fvalue == 0.0) {
677 sr_dbg("Invalid float converted from scope response.");
678 return SR_ERR;
679 }
680 } else {
e5896840 681 if (sr_atof_ascii(sample_points_string, &fvalue) != SR_OK || fvalue == 0.0) {
b3360671 682 sr_dbg("Invalid float converted from scope response.");
683 return SR_ERR;
684 }
685 }
e5896840 686 samplerate_scope = fvalue * 100000;
b3360671 687 } else {
e5896840
UH		 688 sample_points_string[strlen(sample_points_string) - 4] = '\0';
689 if (sr_atof_ascii(sample_points_string, &fvalue) != SR_OK || fvalue == 0.0) {
b3360671 690 sr_dbg("Invalid float converted from scope response.");
691 return SR_ERR;
692 }
e5896840 693 samplerate_scope = fvalue * 1000;
b3360671 694 }
3e7fb88f 695 /* Get the timebase. */
b3360671 696 if (sr_scpi_get_float(sdi->conn, ":TDIV?", &devc->timebase) != SR_OK)
697 return SR_ERR;
3e7fb88f 698 sr_dbg("Current timebase: %g.", devc->timebase);
e5896840 699 devc->samplerate = samplerate_scope / (devc->timebase * devc->model->series->num_horizontal_divs);
3e7fb88f 700
b3360671 701 return SR_OK;
702}
Hardware access and backend lib