2 * This file is part of the libsigrok project.
4 * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
5 * Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com>
6 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
30 #define pipe(fds) _pipe(fds, 4096, _O_BINARY)
32 #include "libsigrok.h"
33 #include "libsigrok-internal.h"
35 #define LOG_PREFIX "demo"
37 #define DEFAULT_NUM_LOGIC_CHANNELS 8
38 #define DEFAULT_NUM_ANALOG_CHANNELS 4
40 /* The size in bytes of chunks to send through the session bus. */
41 #define LOGIC_BUFSIZE 4096
42 /* Size of the analog pattern space per channel. */
43 #define ANALOG_BUFSIZE 4096
45 #define DEFAULT_ANALOG_AMPLITUDE 25
46 #define ANALOG_SAMPLES_PER_PERIOD 20
48 /* Logic patterns we can generate. */
51 * Spells "sigrok" across 8 channels using '0's (with '1's as
52 * "background") when displayed using the 'bits' output format.
53 * The pattern is repeated every 8 channels, shifted to the right
58 /** Pseudo-random values on all channels. */
62 * Incrementing number across 8 channels. The pattern is repeated
63 * every 8 channels, shifted to the right in time by one bit.
67 /** All channels have a low logic state. */
70 /** All channels have a high logic state. */
74 /* Analog patterns we can generate. */
85 static const char *logic_pattern_str[] = {
93 static const char *analog_pattern_str[] = {
103 float pattern_data[ANALOG_BUFSIZE];
104 unsigned int num_samples;
105 struct sr_datafeed_analog packet;
108 /* Private, per-device-instance driver context. */
112 uint64_t cur_samplerate;
114 uint64_t limit_samples;
116 uint64_t logic_counter;
117 uint64_t analog_counter;
121 int32_t num_logic_channels;
122 unsigned int logic_unitsize;
123 /* There is only ever one logic channel group, so its pattern goes here. */
124 uint8_t logic_pattern;
125 unsigned char logic_data[LOGIC_BUFSIZE];
127 int32_t num_analog_channels;
131 static const uint32_t scanopts[] = {
132 SR_CONF_NUM_LOGIC_CHANNELS,
133 SR_CONF_NUM_ANALOG_CHANNELS,
136 static const int devopts[] = {
137 SR_CONF_LOGIC_ANALYZER,
140 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
141 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
142 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
143 SR_CONF_NUM_LOGIC_CHANNELS | SR_CONF_GET,
144 SR_CONF_NUM_ANALOG_CHANNELS | SR_CONF_GET,
147 static const int devopts_cg_logic[] = {
148 SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
151 static const int devopts_cg_analog[] = {
152 SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
153 SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET,
156 static const uint64_t samplerates[] = {
162 static uint8_t pattern_sigrok[] = {
163 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00,
164 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00,
165 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00,
166 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00,
167 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00,
168 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00,
169 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
170 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
173 SR_PRIV struct sr_dev_driver demo_driver_info;
174 static struct sr_dev_driver *di = &demo_driver_info;
176 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
179 static int init(struct sr_context *sr_ctx)
181 return std_init(sr_ctx, di, LOG_PREFIX);
184 static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate)
188 unsigned int num_samples, i;
191 sr_dbg("Generating %s pattern.", analog_pattern_str[ag->pattern]);
193 num_samples = ANALOG_BUFSIZE / sizeof(float);
195 switch (ag->pattern) {
197 value = ag->amplitude;
199 for (i = 0; i < num_samples; i++) {
204 ag->pattern_data[i] = value;
206 ag->num_samples = last_end;
210 frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD;
212 /* Make sure the number of samples we put out is an integer
213 * multiple of our period size */
214 /* FIXME we actually need only one period. A ringbuffer would be
216 while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0)
219 for (i = 0; i < num_samples; i++) {
220 t = (double) i / (double) sample_rate;
221 ag->pattern_data[i] = ag->amplitude *
222 sin(2 * M_PI * frequency * t);
225 ag->num_samples = num_samples;
228 case PATTERN_TRIANGLE:
229 frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD;
231 while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0)
234 for (i = 0; i < num_samples; i++) {
235 t = (double) i / (double) sample_rate;
236 ag->pattern_data[i] = (2 * ag->amplitude / M_PI) *
237 asin(sin(2 * M_PI * frequency * t));
240 ag->num_samples = num_samples;
243 case PATTERN_SAWTOOTH:
244 frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD;
246 while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0)
249 for (i = 0; i < num_samples; i++) {
250 t = (double) i / (double) sample_rate;
251 ag->pattern_data[i] = 2 * ag->amplitude *
252 ((t * frequency) - floor(0.5f + t * frequency));
255 ag->num_samples = num_samples;
260 static GSList *scan(GSList *options)
262 struct drv_context *drvc;
263 struct dev_context *devc;
264 struct sr_dev_inst *sdi;
265 struct sr_channel *ch;
266 struct sr_channel_group *cg, *acg;
267 struct sr_config *src;
268 struct analog_gen *ag;
270 int num_logic_channels, num_analog_channels, pattern, i;
271 char channel_name[16];
275 num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS;
276 num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS;
277 for (l = options; l; l = l->next) {
280 case SR_CONF_NUM_LOGIC_CHANNELS:
281 num_logic_channels = g_variant_get_int32(src->data);
283 case SR_CONF_NUM_ANALOG_CHANNELS:
284 num_analog_channels = g_variant_get_int32(src->data);
290 sdi = sr_dev_inst_new(SR_ST_ACTIVE, "Demo device", NULL, NULL);
292 sr_err("Device instance creation failed.");
297 devc = g_malloc(sizeof(struct dev_context));
298 devc->cur_samplerate = SR_KHZ(200);
299 devc->limit_samples = 0;
300 devc->limit_msec = 0;
302 devc->continuous = FALSE;
303 devc->num_logic_channels = num_logic_channels;
304 devc->logic_unitsize = (devc->num_logic_channels + 7) / 8;
305 devc->logic_pattern = PATTERN_SIGROK;
306 devc->num_analog_channels = num_analog_channels;
308 /* Logic channels, all in one channel group. */
309 cg = g_malloc0(sizeof(struct sr_channel_group));
310 cg->name = g_strdup("Logic");
311 for (i = 0; i < num_logic_channels; i++) {
312 sprintf(channel_name, "D%d", i);
313 if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, channel_name)))
315 sdi->channels = g_slist_append(sdi->channels, ch);
316 cg->channels = g_slist_append(cg->channels, ch);
318 sdi->channel_groups = g_slist_append(NULL, cg);
320 /* Analog channels, channel groups and pattern generators. */
322 /* An "Analog" channel group with all analog channels in it. */
323 acg = g_malloc0(sizeof(struct sr_channel_group));
324 acg->name = g_strdup("Analog");
325 sdi->channel_groups = g_slist_append(sdi->channel_groups, acg);
327 devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal);
328 for (i = 0; i < num_analog_channels; i++) {
329 snprintf(channel_name, 16, "A%d", i);
330 ch = sr_channel_new(i + num_logic_channels, SR_CHANNEL_ANALOG,
332 sdi->channels = g_slist_append(sdi->channels, ch);
333 acg->channels = g_slist_append(acg->channels, ch);
335 /* Every analog channel gets its own channel group as well. */
336 cg = g_malloc0(sizeof(struct sr_channel_group));
337 cg->name = g_strdup(channel_name);
338 cg->channels = g_slist_append(NULL, ch);
339 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
341 /* Every channel gets a generator struct. */
342 ag = g_malloc(sizeof(struct analog_gen));
343 ag->amplitude = DEFAULT_ANALOG_AMPLITUDE;
344 ag->packet.channels = cg->channels;
346 ag->packet.mqflags = 0;
347 ag->packet.unit = SR_UNIT_VOLT;
348 ag->packet.data = ag->pattern_data;
349 ag->pattern = pattern;
350 g_hash_table_insert(devc->ch_ag, ch, ag);
352 if (++pattern == ARRAY_SIZE(analog_pattern_str))
357 devices = g_slist_append(devices, sdi);
358 drvc->instances = g_slist_append(drvc->instances, sdi);
363 static GSList *dev_list(void)
365 return ((struct drv_context *)(di->priv))->instances;
368 static int dev_open(struct sr_dev_inst *sdi)
370 sdi->status = SR_ST_ACTIVE;
375 static int dev_close(struct sr_dev_inst *sdi)
377 sdi->status = SR_ST_INACTIVE;
382 static void clear_helper(void *priv)
384 struct dev_context *devc;
390 /* Analog generators. */
391 g_hash_table_iter_init(&iter, devc->ch_ag);
392 while (g_hash_table_iter_next(&iter, NULL, &value))
394 g_hash_table_unref(devc->ch_ag);
398 static int cleanup(void)
400 return std_dev_clear(di, clear_helper);
403 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
404 const struct sr_channel_group *cg)
406 struct dev_context *devc;
407 struct sr_channel *ch;
408 struct analog_gen *ag;
416 case SR_CONF_SAMPLERATE:
417 *data = g_variant_new_uint64(devc->cur_samplerate);
419 case SR_CONF_LIMIT_SAMPLES:
420 *data = g_variant_new_uint64(devc->limit_samples);
422 case SR_CONF_LIMIT_MSEC:
423 *data = g_variant_new_uint64(devc->limit_msec);
425 case SR_CONF_PATTERN_MODE:
427 return SR_ERR_CHANNEL_GROUP;
428 /* Any channel in the group will do. */
429 ch = cg->channels->data;
430 if (ch->type == SR_CHANNEL_LOGIC) {
431 pattern = devc->logic_pattern;
432 *data = g_variant_new_string(logic_pattern_str[pattern]);
433 } else if (ch->type == SR_CHANNEL_ANALOG) {
434 ag = g_hash_table_lookup(devc->ch_ag, ch);
435 pattern = ag->pattern;
436 *data = g_variant_new_string(analog_pattern_str[pattern]);
440 case SR_CONF_NUM_LOGIC_CHANNELS:
441 *data = g_variant_new_int32(devc->num_logic_channels);
443 case SR_CONF_NUM_ANALOG_CHANNELS:
444 *data = g_variant_new_int32(devc->num_analog_channels);
446 case SR_CONF_AMPLITUDE:
448 return SR_ERR_CHANNEL_GROUP;
449 /* Any channel in the group will do. */
450 ch = cg->channels->data;
451 if (ch->type != SR_CHANNEL_ANALOG)
453 ag = g_hash_table_lookup(devc->ch_ag, ch);
454 *data = g_variant_new_double(ag->amplitude);
463 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
464 const struct sr_channel_group *cg)
466 struct dev_context *devc;
467 struct analog_gen *ag;
468 struct sr_channel *ch;
470 int logic_pattern, analog_pattern, ret;
476 if (sdi->status != SR_ST_ACTIVE)
477 return SR_ERR_DEV_CLOSED;
481 case SR_CONF_SAMPLERATE:
482 devc->cur_samplerate = g_variant_get_uint64(data);
483 sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate);
485 case SR_CONF_LIMIT_SAMPLES:
486 devc->limit_msec = 0;
487 devc->limit_samples = g_variant_get_uint64(data);
488 sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples);
490 case SR_CONF_LIMIT_MSEC:
491 devc->limit_msec = g_variant_get_uint64(data);
492 devc->limit_samples = 0;
493 sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
495 case SR_CONF_PATTERN_MODE:
497 return SR_ERR_CHANNEL_GROUP;
498 stropt = g_variant_get_string(data, NULL);
499 logic_pattern = analog_pattern = -1;
500 for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) {
501 if (!strcmp(stropt, logic_pattern_str[i])) {
506 for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) {
507 if (!strcmp(stropt, analog_pattern_str[i])) {
512 if (logic_pattern == -1 && analog_pattern == -1)
514 for (l = cg->channels; l; l = l->next) {
516 if (ch->type == SR_CHANNEL_LOGIC) {
517 if (logic_pattern == -1)
519 sr_dbg("Setting logic pattern to %s",
520 logic_pattern_str[logic_pattern]);
521 devc->logic_pattern = logic_pattern;
522 /* Might as well do this now, these are static. */
523 if (logic_pattern == PATTERN_ALL_LOW)
524 memset(devc->logic_data, 0x00, LOGIC_BUFSIZE);
525 else if (logic_pattern == PATTERN_ALL_HIGH)
526 memset(devc->logic_data, 0xff, LOGIC_BUFSIZE);
527 } else if (ch->type == SR_CHANNEL_ANALOG) {
528 if (analog_pattern == -1)
530 sr_dbg("Setting analog pattern for channel %s to %s",
531 ch->name, analog_pattern_str[analog_pattern]);
532 ag = g_hash_table_lookup(devc->ch_ag, ch);
533 ag->pattern = analog_pattern;
538 case SR_CONF_AMPLITUDE:
540 return SR_ERR_CHANNEL_GROUP;
541 for (l = cg->channels; l; l = l->next) {
543 if (ch->type != SR_CHANNEL_ANALOG)
545 ag = g_hash_table_lookup(devc->ch_ag, ch);
546 ag->amplitude = g_variant_get_double(data);
556 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
557 const struct sr_channel_group *cg)
559 struct sr_channel *ch;
565 if (key == SR_CONF_SCAN_OPTIONS) {
566 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
567 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
576 case SR_CONF_DEVICE_OPTIONS:
577 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
578 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
580 case SR_CONF_SAMPLERATE:
581 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
582 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
583 ARRAY_SIZE(samplerates), sizeof(uint64_t));
584 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
585 *data = g_variant_builder_end(&gvb);
591 /* Any channel in the group will do. */
592 ch = cg->channels->data;
594 case SR_CONF_DEVICE_OPTIONS:
595 if (ch->type == SR_CHANNEL_LOGIC)
596 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
597 devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic),
599 else if (ch->type == SR_CHANNEL_ANALOG)
600 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
601 devopts_cg_analog, ARRAY_SIZE(devopts_cg_analog),
606 case SR_CONF_PATTERN_MODE:
607 if (ch->type == SR_CHANNEL_LOGIC)
608 *data = g_variant_new_strv(logic_pattern_str,
609 ARRAY_SIZE(logic_pattern_str));
610 else if (ch->type == SR_CHANNEL_ANALOG)
611 *data = g_variant_new_strv(analog_pattern_str,
612 ARRAY_SIZE(analog_pattern_str));
624 static void logic_generator(struct sr_dev_inst *sdi, uint64_t size)
626 struct dev_context *devc;
632 switch (devc->logic_pattern) {
634 memset(devc->logic_data, 0x00, size);
635 for (i = 0; i < size; i += devc->logic_unitsize) {
636 for (j = 0; j < devc->logic_unitsize; j++) {
637 pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1;
638 devc->logic_data[i + j] = ~pat;
644 for (i = 0; i < size; i++)
645 devc->logic_data[i] = (uint8_t)(rand() & 0xff);
648 for (i = 0; i < size; i++) {
649 for (j = 0; j < devc->logic_unitsize; j++) {
650 devc->logic_data[i + j] = devc->step;
655 case PATTERN_ALL_LOW:
656 case PATTERN_ALL_HIGH:
657 /* These were set when the pattern mode was selected. */
660 sr_err("Unknown pattern: %d.", devc->logic_pattern);
665 /* Callback handling data */
666 static int prepare_data(int fd, int revents, void *cb_data)
668 struct sr_dev_inst *sdi;
669 struct dev_context *devc;
670 struct sr_datafeed_packet packet;
671 struct sr_datafeed_logic logic;
672 struct analog_gen *ag;
675 uint64_t logic_todo, analog_todo, expected_samplenum, analog_sent, sending_now;
676 int64_t time, elapsed;
683 logic_todo = analog_todo = 0;
685 /* How many samples should we have sent by now? */
686 time = g_get_monotonic_time();
687 elapsed = time - devc->starttime;
688 expected_samplenum = elapsed * devc->cur_samplerate / 1000000;
690 /* But never more than the limit, if there is one. */
691 if (!devc->continuous)
692 expected_samplenum = MIN(expected_samplenum, devc->limit_samples);
694 /* Of those, how many do we still have to send? */
695 if (devc->num_logic_channels)
696 logic_todo = expected_samplenum - devc->logic_counter;
697 if (devc->num_analog_channels)
698 analog_todo = expected_samplenum - devc->analog_counter;
700 while (logic_todo || analog_todo) {
702 if (logic_todo > 0) {
703 sending_now = MIN(logic_todo, LOGIC_BUFSIZE / devc->logic_unitsize);
704 logic_generator(sdi, sending_now * devc->logic_unitsize);
705 packet.type = SR_DF_LOGIC;
706 packet.payload = &logic;
707 logic.length = sending_now * devc->logic_unitsize;
708 logic.unitsize = devc->logic_unitsize;
709 logic.data = devc->logic_data;
710 sr_session_send(sdi, &packet);
711 logic_todo -= sending_now;
712 devc->logic_counter += sending_now;
715 /* Analog, one channel at a time */
716 if (analog_todo > 0) {
719 g_hash_table_iter_init(&iter, devc->ch_ag);
720 while (g_hash_table_iter_next(&iter, NULL, &value)) {
722 packet.type = SR_DF_ANALOG;
723 packet.payload = &ag->packet;
725 /* FIXME we should make sure we output a whole
726 * period of data before we send out again the
727 * beginning of our buffer. A ring buffer would
728 * help here as well */
730 sending_now = MIN(analog_todo, ag->num_samples);
731 ag->packet.num_samples = sending_now;
732 sr_session_send(sdi, &packet);
734 /* Whichever channel group gets there first. */
735 analog_sent = MAX(analog_sent, sending_now);
737 analog_todo -= analog_sent;
738 devc->analog_counter += analog_sent;
742 if (!devc->continuous
743 && (!devc->num_logic_channels || devc->logic_counter >= devc->limit_samples)
744 && (!devc->num_analog_channels || devc->analog_counter >= devc->limit_samples)) {
745 sr_dbg("Requested number of samples reached.");
746 dev_acquisition_stop(sdi, cb_data);
753 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
755 struct dev_context *devc;
761 if (sdi->status != SR_ST_ACTIVE)
762 return SR_ERR_DEV_CLOSED;
765 devc->continuous = !devc->limit_samples;
766 devc->logic_counter = devc->analog_counter = 0;
769 * Setting two channels connected by a pipe is a remnant from when the
770 * demo driver generated data in a thread, and collected and sent the
771 * data in the main program loop.
772 * They are kept here because it provides a convenient way of setting
773 * up a timeout-based polling mechanism.
775 if (pipe(devc->pipe_fds)) {
776 sr_err("%s: pipe() failed", __func__);
780 g_hash_table_iter_init(&iter, devc->ch_ag);
781 while (g_hash_table_iter_next(&iter, NULL, &value))
782 generate_analog_pattern(value, devc->cur_samplerate);
784 devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
785 g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
787 /* Set channel encoding to binary (default is UTF-8). */
788 g_io_channel_set_encoding(devc->channel, NULL, NULL);
790 /* Make channels unbuffered. */
791 g_io_channel_set_buffered(devc->channel, FALSE);
793 sr_session_source_add_channel(sdi->session, devc->channel,
794 G_IO_IN | G_IO_ERR, 40, prepare_data, (void *)sdi);
796 /* Send header packet to the session bus. */
797 std_session_send_df_header(sdi, LOG_PREFIX);
799 /* We use this timestamp to decide how many more samples to send. */
800 devc->starttime = g_get_monotonic_time();
805 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
807 struct dev_context *devc;
808 struct sr_datafeed_packet packet;
813 sr_dbg("Stopping acquisition.");
815 sr_session_source_remove_channel(sdi->session, devc->channel);
816 g_io_channel_shutdown(devc->channel, FALSE, NULL);
817 g_io_channel_unref(devc->channel);
818 devc->channel = NULL;
820 /* Send last packet. */
821 packet.type = SR_DF_END;
822 sr_session_send(sdi, &packet);
827 SR_PRIV struct sr_dev_driver demo_driver_info = {
829 .longname = "Demo driver and pattern generator",
834 .dev_list = dev_list,
836 .config_get = config_get,
837 .config_set = config_set,
838 .config_list = config_list,
839 .dev_open = dev_open,
840 .dev_close = dev_close,
841 .dev_acquisition_start = dev_acquisition_start,
842 .dev_acquisition_stop = dev_acquisition_stop,