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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
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> | |
7 | * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.com> | |
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 2 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 | ||
23 | #include <config.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <math.h> | |
27 | #include <libsigrok/libsigrok.h> | |
28 | #include "libsigrok-internal.h" | |
29 | #include "protocol.h" | |
30 | ||
31 | #define DEFAULT_NUM_LOGIC_CHANNELS 8 | |
32 | #define DEFAULT_LOGIC_PATTERN PATTERN_SIGROK | |
33 | ||
34 | #define DEFAULT_NUM_ANALOG_CHANNELS 4 | |
35 | #define DEFAULT_ANALOG_AMPLITUDE 10 | |
36 | ||
37 | /* Note: No spaces allowed because of sigrok-cli. */ | |
38 | static const char *logic_pattern_str[] = { | |
39 | "sigrok", | |
40 | "random", | |
41 | "incremental", | |
42 | "walking-one", | |
43 | "walking-zero", | |
44 | "all-low", | |
45 | "all-high", | |
46 | "squid", | |
47 | "graycode", | |
48 | }; | |
49 | ||
50 | static const uint32_t scanopts[] = { | |
51 | SR_CONF_NUM_LOGIC_CHANNELS, | |
52 | SR_CONF_NUM_ANALOG_CHANNELS, | |
53 | SR_CONF_LIMIT_FRAMES, | |
54 | }; | |
55 | ||
56 | static const uint32_t drvopts[] = { | |
57 | SR_CONF_DEMO_DEV, | |
58 | SR_CONF_LOGIC_ANALYZER, | |
59 | SR_CONF_OSCILLOSCOPE, | |
60 | }; | |
61 | ||
62 | static const uint32_t devopts[] = { | |
63 | SR_CONF_CONTINUOUS, | |
64 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
65 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
66 | SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET, | |
67 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
68 | SR_CONF_AVERAGING | SR_CONF_GET | SR_CONF_SET, | |
69 | SR_CONF_AVG_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
70 | }; | |
71 | ||
72 | static const uint32_t devopts_cg_logic[] = { | |
73 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
74 | }; | |
75 | ||
76 | static const uint32_t devopts_cg_analog_group[] = { | |
77 | SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET, | |
78 | }; | |
79 | ||
80 | static const uint32_t devopts_cg_analog_channel[] = { | |
81 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
82 | SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET, | |
83 | }; | |
84 | ||
85 | static const uint64_t samplerates[] = { | |
86 | SR_HZ(1), | |
87 | SR_GHZ(1), | |
88 | SR_HZ(1), | |
89 | }; | |
90 | ||
91 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
92 | { | |
93 | struct dev_context *devc; | |
94 | struct sr_dev_inst *sdi; | |
95 | struct sr_channel *ch; | |
96 | struct sr_channel_group *cg, *acg; | |
97 | struct sr_config *src; | |
98 | struct analog_gen *ag; | |
99 | GSList *l; | |
100 | int num_logic_channels, num_analog_channels, pattern, i; | |
101 | uint64_t limit_frames; | |
102 | char channel_name[16]; | |
103 | ||
104 | num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS; | |
105 | num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS; | |
106 | limit_frames = DEFAULT_LIMIT_FRAMES; | |
107 | for (l = options; l; l = l->next) { | |
108 | src = l->data; | |
109 | switch (src->key) { | |
110 | case SR_CONF_NUM_LOGIC_CHANNELS: | |
111 | num_logic_channels = g_variant_get_int32(src->data); | |
112 | break; | |
113 | case SR_CONF_NUM_ANALOG_CHANNELS: | |
114 | num_analog_channels = g_variant_get_int32(src->data); | |
115 | break; | |
116 | case SR_CONF_LIMIT_FRAMES: | |
117 | limit_frames = g_variant_get_uint64(src->data); | |
118 | break; | |
119 | } | |
120 | } | |
121 | ||
122 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
123 | sdi->status = SR_ST_INACTIVE; | |
124 | sdi->model = g_strdup("Demo device"); | |
125 | ||
126 | devc = g_malloc0(sizeof(struct dev_context)); | |
127 | devc->cur_samplerate = SR_KHZ(200); | |
128 | devc->num_logic_channels = num_logic_channels; | |
129 | devc->logic_unitsize = (devc->num_logic_channels + 7) / 8; | |
130 | devc->all_logic_channels_mask = 1UL << 0; | |
131 | devc->all_logic_channels_mask <<= devc->num_logic_channels; | |
132 | devc->all_logic_channels_mask--; | |
133 | devc->logic_pattern = DEFAULT_LOGIC_PATTERN; | |
134 | devc->num_analog_channels = num_analog_channels; | |
135 | devc->limit_frames = limit_frames; | |
136 | ||
137 | if (num_logic_channels > 0) { | |
138 | /* Logic channels, all in one channel group. */ | |
139 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
140 | cg->name = g_strdup("Logic"); | |
141 | for (i = 0; i < num_logic_channels; i++) { | |
142 | sprintf(channel_name, "D%d", i); | |
143 | ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name); | |
144 | cg->channels = g_slist_append(cg->channels, ch); | |
145 | } | |
146 | sdi->channel_groups = g_slist_append(NULL, cg); | |
147 | } | |
148 | ||
149 | /* Analog channels, channel groups and pattern generators. */ | |
150 | devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal); | |
151 | if (num_analog_channels > 0) { | |
152 | pattern = 0; | |
153 | /* An "Analog" channel group with all analog channels in it. */ | |
154 | acg = g_malloc0(sizeof(struct sr_channel_group)); | |
155 | acg->name = g_strdup("Analog"); | |
156 | sdi->channel_groups = g_slist_append(sdi->channel_groups, acg); | |
157 | ||
158 | for (i = 0; i < num_analog_channels; i++) { | |
159 | snprintf(channel_name, 16, "A%d", i); | |
160 | ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG, | |
161 | TRUE, channel_name); | |
162 | acg->channels = g_slist_append(acg->channels, ch); | |
163 | ||
164 | /* Every analog channel gets its own channel group as well. */ | |
165 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
166 | cg->name = g_strdup(channel_name); | |
167 | cg->channels = g_slist_append(NULL, ch); | |
168 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
169 | ||
170 | /* Every channel gets a generator struct. */ | |
171 | ag = g_malloc(sizeof(struct analog_gen)); | |
172 | ag->ch = ch; | |
173 | ag->amplitude = DEFAULT_ANALOG_AMPLITUDE; | |
174 | sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2); | |
175 | ag->packet.meaning->channels = cg->channels; | |
176 | ag->packet.meaning->mq = 0; | |
177 | ag->packet.meaning->mqflags = 0; | |
178 | ag->packet.meaning->unit = SR_UNIT_VOLT; | |
179 | ag->packet.data = ag->pattern_data; | |
180 | ag->pattern = pattern; | |
181 | ag->avg_val = 0.0f; | |
182 | ag->num_avgs = 0; | |
183 | g_hash_table_insert(devc->ch_ag, ch, ag); | |
184 | ||
185 | if (++pattern == ARRAY_SIZE(analog_pattern_str)) | |
186 | pattern = 0; | |
187 | } | |
188 | } | |
189 | ||
190 | sdi->priv = devc; | |
191 | ||
192 | return std_scan_complete(di, g_slist_append(NULL, sdi)); | |
193 | } | |
194 | ||
195 | static void clear_helper(struct dev_context *devc) | |
196 | { | |
197 | GHashTableIter iter; | |
198 | void *value; | |
199 | ||
200 | /* Analog generators. */ | |
201 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
202 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
203 | g_free(value); | |
204 | g_hash_table_unref(devc->ch_ag); | |
205 | } | |
206 | ||
207 | static int dev_clear(const struct sr_dev_driver *di) | |
208 | { | |
209 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); | |
210 | } | |
211 | ||
212 | static int config_get(uint32_t key, GVariant **data, | |
213 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
214 | { | |
215 | struct dev_context *devc; | |
216 | struct sr_channel *ch; | |
217 | struct analog_gen *ag; | |
218 | int pattern; | |
219 | ||
220 | if (!sdi) | |
221 | return SR_ERR_ARG; | |
222 | ||
223 | devc = sdi->priv; | |
224 | switch (key) { | |
225 | case SR_CONF_SAMPLERATE: | |
226 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
227 | break; | |
228 | case SR_CONF_LIMIT_SAMPLES: | |
229 | *data = g_variant_new_uint64(devc->limit_samples); | |
230 | break; | |
231 | case SR_CONF_LIMIT_MSEC: | |
232 | *data = g_variant_new_uint64(devc->limit_msec); | |
233 | break; | |
234 | case SR_CONF_LIMIT_FRAMES: | |
235 | *data = g_variant_new_uint64(devc->limit_frames); | |
236 | break; | |
237 | case SR_CONF_AVERAGING: | |
238 | *data = g_variant_new_boolean(devc->avg); | |
239 | break; | |
240 | case SR_CONF_AVG_SAMPLES: | |
241 | *data = g_variant_new_uint64(devc->avg_samples); | |
242 | break; | |
243 | case SR_CONF_PATTERN_MODE: | |
244 | if (!cg) | |
245 | return SR_ERR_CHANNEL_GROUP; | |
246 | /* Any channel in the group will do. */ | |
247 | ch = cg->channels->data; | |
248 | if (ch->type == SR_CHANNEL_LOGIC) { | |
249 | pattern = devc->logic_pattern; | |
250 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
251 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
252 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
253 | pattern = ag->pattern; | |
254 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
255 | } else | |
256 | return SR_ERR_BUG; | |
257 | break; | |
258 | case SR_CONF_AMPLITUDE: | |
259 | if (!cg) | |
260 | return SR_ERR_CHANNEL_GROUP; | |
261 | /* Any channel in the group will do. */ | |
262 | ch = cg->channels->data; | |
263 | if (ch->type != SR_CHANNEL_ANALOG) | |
264 | return SR_ERR_ARG; | |
265 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
266 | *data = g_variant_new_double(ag->amplitude); | |
267 | break; | |
268 | default: | |
269 | return SR_ERR_NA; | |
270 | } | |
271 | ||
272 | return SR_OK; | |
273 | } | |
274 | ||
275 | static int config_set(uint32_t key, GVariant *data, | |
276 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
277 | { | |
278 | struct dev_context *devc; | |
279 | struct analog_gen *ag; | |
280 | struct sr_channel *ch; | |
281 | GSList *l; | |
282 | int logic_pattern, analog_pattern; | |
283 | ||
284 | devc = sdi->priv; | |
285 | ||
286 | switch (key) { | |
287 | case SR_CONF_SAMPLERATE: | |
288 | devc->cur_samplerate = g_variant_get_uint64(data); | |
289 | break; | |
290 | case SR_CONF_LIMIT_SAMPLES: | |
291 | devc->limit_msec = 0; | |
292 | devc->limit_samples = g_variant_get_uint64(data); | |
293 | break; | |
294 | case SR_CONF_LIMIT_MSEC: | |
295 | devc->limit_msec = g_variant_get_uint64(data); | |
296 | devc->limit_samples = 0; | |
297 | break; | |
298 | case SR_CONF_LIMIT_FRAMES: | |
299 | devc->limit_frames = g_variant_get_uint64(data); | |
300 | break; | |
301 | case SR_CONF_AVERAGING: | |
302 | devc->avg = g_variant_get_boolean(data); | |
303 | sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling"); | |
304 | break; | |
305 | case SR_CONF_AVG_SAMPLES: | |
306 | devc->avg_samples = g_variant_get_uint64(data); | |
307 | sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples); | |
308 | break; | |
309 | case SR_CONF_PATTERN_MODE: | |
310 | if (!cg) | |
311 | return SR_ERR_CHANNEL_GROUP; | |
312 | logic_pattern = std_str_idx(data, ARRAY_AND_SIZE(logic_pattern_str)); | |
313 | analog_pattern = std_str_idx(data, ARRAY_AND_SIZE(analog_pattern_str)); | |
314 | if (logic_pattern < 0 && analog_pattern < 0) | |
315 | return SR_ERR_ARG; | |
316 | for (l = cg->channels; l; l = l->next) { | |
317 | ch = l->data; | |
318 | if (ch->type == SR_CHANNEL_LOGIC) { | |
319 | if (logic_pattern == -1) | |
320 | return SR_ERR_ARG; | |
321 | sr_dbg("Setting logic pattern to %s", | |
322 | logic_pattern_str[logic_pattern]); | |
323 | devc->logic_pattern = logic_pattern; | |
324 | /* Might as well do this now, these are static. */ | |
325 | if (logic_pattern == PATTERN_ALL_LOW) | |
326 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); | |
327 | else if (logic_pattern == PATTERN_ALL_HIGH) | |
328 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); | |
329 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
330 | if (analog_pattern == -1) | |
331 | return SR_ERR_ARG; | |
332 | sr_dbg("Setting analog pattern for channel %s to %s", | |
333 | ch->name, analog_pattern_str[analog_pattern]); | |
334 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
335 | ag->pattern = analog_pattern; | |
336 | } else | |
337 | return SR_ERR_BUG; | |
338 | } | |
339 | break; | |
340 | case SR_CONF_AMPLITUDE: | |
341 | if (!cg) | |
342 | return SR_ERR_CHANNEL_GROUP; | |
343 | for (l = cg->channels; l; l = l->next) { | |
344 | ch = l->data; | |
345 | if (ch->type != SR_CHANNEL_ANALOG) | |
346 | return SR_ERR_ARG; | |
347 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
348 | ag->amplitude = g_variant_get_double(data); | |
349 | } | |
350 | break; | |
351 | default: | |
352 | return SR_ERR_NA; | |
353 | } | |
354 | ||
355 | return SR_OK; | |
356 | } | |
357 | ||
358 | static int config_list(uint32_t key, GVariant **data, | |
359 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
360 | { | |
361 | struct sr_channel *ch; | |
362 | ||
363 | if (!cg) { | |
364 | switch (key) { | |
365 | case SR_CONF_SCAN_OPTIONS: | |
366 | case SR_CONF_DEVICE_OPTIONS: | |
367 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
368 | case SR_CONF_SAMPLERATE: | |
369 | *data = std_gvar_samplerates_steps(ARRAY_AND_SIZE(samplerates)); | |
370 | break; | |
371 | default: | |
372 | return SR_ERR_NA; | |
373 | } | |
374 | } else { | |
375 | ch = cg->channels->data; | |
376 | switch (key) { | |
377 | case SR_CONF_DEVICE_OPTIONS: | |
378 | if (ch->type == SR_CHANNEL_LOGIC) | |
379 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_logic)); | |
380 | else if (ch->type == SR_CHANNEL_ANALOG) { | |
381 | if (strcmp(cg->name, "Analog") == 0) | |
382 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog_group)); | |
383 | else | |
384 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog_channel)); | |
385 | } | |
386 | else | |
387 | return SR_ERR_BUG; | |
388 | break; | |
389 | case SR_CONF_PATTERN_MODE: | |
390 | /* The analog group (with all 4 channels) shall not have a pattern property. */ | |
391 | if (strcmp(cg->name, "Analog") == 0) | |
392 | return SR_ERR_NA; | |
393 | ||
394 | if (ch->type == SR_CHANNEL_LOGIC) | |
395 | *data = g_variant_new_strv(ARRAY_AND_SIZE(logic_pattern_str)); | |
396 | else if (ch->type == SR_CHANNEL_ANALOG) | |
397 | *data = g_variant_new_strv(ARRAY_AND_SIZE(analog_pattern_str)); | |
398 | else | |
399 | return SR_ERR_BUG; | |
400 | break; | |
401 | default: | |
402 | return SR_ERR_NA; | |
403 | } | |
404 | } | |
405 | ||
406 | return SR_OK; | |
407 | } | |
408 | ||
409 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
410 | { | |
411 | struct dev_context *devc; | |
412 | GSList *l; | |
413 | struct sr_channel *ch; | |
414 | int bitpos; | |
415 | uint8_t mask; | |
416 | GHashTableIter iter; | |
417 | void *value; | |
418 | ||
419 | devc = sdi->priv; | |
420 | devc->sent_samples = 0; | |
421 | devc->sent_frame_samples = 0; | |
422 | ||
423 | /* | |
424 | * Determine the numbers of logic and analog channels that are | |
425 | * involved in the acquisition. Determine an offset and a mask to | |
426 | * remove excess logic data content before datafeed submission. | |
427 | */ | |
428 | devc->enabled_logic_channels = 0; | |
429 | devc->enabled_analog_channels = 0; | |
430 | for (l = sdi->channels; l; l = l->next) { | |
431 | ch = l->data; | |
432 | if (!ch->enabled) | |
433 | continue; | |
434 | if (ch->type == SR_CHANNEL_ANALOG) { | |
435 | devc->enabled_analog_channels++; | |
436 | continue; | |
437 | } | |
438 | if (ch->type != SR_CHANNEL_LOGIC) | |
439 | continue; | |
440 | /* | |
441 | * TODO: Need we create a channel map here, such that the | |
442 | * session datafeed packets will have a dense representation | |
443 | * of the enabled channels' data? For example store channels | |
444 | * D3 and D5 in bit positions 0 and 1 respectively, when all | |
445 | * other channels are disabled? The current implementation | |
446 | * generates a sparse layout, might provide data for logic | |
447 | * channels that are disabled while it might suppress data | |
448 | * from enabled channels at the same time. | |
449 | */ | |
450 | devc->enabled_logic_channels++; | |
451 | } | |
452 | devc->first_partial_logic_index = devc->enabled_logic_channels / 8; | |
453 | bitpos = devc->enabled_logic_channels % 8; | |
454 | mask = (1 << bitpos) - 1; | |
455 | devc->first_partial_logic_mask = mask; | |
456 | sr_dbg("num logic %zu, partial off %zu, mask 0x%02x.", | |
457 | devc->enabled_logic_channels, | |
458 | devc->first_partial_logic_index, | |
459 | devc->first_partial_logic_mask); | |
460 | ||
461 | /* | |
462 | * Have the waveform for analog patterns pre-generated. It's | |
463 | * supposed to be periodic, so the generator just needs to | |
464 | * access the prepared sample data (DDS style). | |
465 | */ | |
466 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
467 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
468 | demo_generate_analog_pattern(value, devc->cur_samplerate); | |
469 | ||
470 | sr_session_source_add(sdi->session, -1, 0, 100, | |
471 | demo_prepare_data, (struct sr_dev_inst *)sdi); | |
472 | ||
473 | std_session_send_df_header(sdi); | |
474 | ||
475 | if (devc->limit_frames > 0) | |
476 | std_session_send_frame_begin(sdi); | |
477 | ||
478 | /* We use this timestamp to decide how many more samples to send. */ | |
479 | devc->start_us = g_get_monotonic_time(); | |
480 | devc->spent_us = 0; | |
481 | devc->step = 0; | |
482 | ||
483 | return SR_OK; | |
484 | } | |
485 | ||
486 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
487 | { | |
488 | struct dev_context *devc; | |
489 | ||
490 | sr_session_source_remove(sdi->session, -1); | |
491 | ||
492 | devc = sdi->priv; | |
493 | if (devc->limit_frames > 0) | |
494 | std_session_send_frame_end(sdi); | |
495 | ||
496 | std_session_send_df_end(sdi); | |
497 | ||
498 | return SR_OK; | |
499 | } | |
500 | ||
501 | static struct sr_dev_driver demo_driver_info = { | |
502 | .name = "demo", | |
503 | .longname = "Demo driver and pattern generator", | |
504 | .api_version = 1, | |
505 | .init = std_init, | |
506 | .cleanup = std_cleanup, | |
507 | .scan = scan, | |
508 | .dev_list = std_dev_list, | |
509 | .dev_clear = dev_clear, | |
510 | .config_get = config_get, | |
511 | .config_set = config_set, | |
512 | .config_list = config_list, | |
513 | .dev_open = std_dummy_dev_open, | |
514 | .dev_close = std_dummy_dev_close, | |
515 | .dev_acquisition_start = dev_acquisition_start, | |
516 | .dev_acquisition_stop = dev_acquisition_stop, | |
517 | .context = NULL, | |
518 | }; | |
519 | SR_REGISTER_DEV_DRIVER(demo_driver_info); |