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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 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
71 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
72 | }; | |
73 | ||
74 | static const uint32_t devopts_cg_logic[] = { | |
75 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
76 | }; | |
77 | ||
78 | static const uint32_t devopts_cg_analog_group[] = { | |
79 | SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET, | |
80 | }; | |
81 | ||
82 | static const uint32_t devopts_cg_analog_channel[] = { | |
83 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
84 | SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET, | |
85 | }; | |
86 | ||
87 | static const int32_t trigger_matches[] = { | |
88 | SR_TRIGGER_ZERO, | |
89 | SR_TRIGGER_ONE, | |
90 | SR_TRIGGER_RISING, | |
91 | SR_TRIGGER_FALLING, | |
92 | SR_TRIGGER_EDGE, | |
93 | }; | |
94 | ||
95 | static const uint64_t samplerates[] = { | |
96 | SR_HZ(1), | |
97 | SR_GHZ(1), | |
98 | SR_HZ(1), | |
99 | }; | |
100 | ||
101 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
102 | { | |
103 | struct dev_context *devc; | |
104 | struct sr_dev_inst *sdi; | |
105 | struct sr_channel *ch; | |
106 | struct sr_channel_group *cg, *acg; | |
107 | struct sr_config *src; | |
108 | struct analog_gen *ag; | |
109 | GSList *l; | |
110 | int num_logic_channels, num_analog_channels, pattern, i; | |
111 | uint64_t limit_frames; | |
112 | char channel_name[16]; | |
113 | ||
114 | num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS; | |
115 | num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS; | |
116 | limit_frames = DEFAULT_LIMIT_FRAMES; | |
117 | for (l = options; l; l = l->next) { | |
118 | src = l->data; | |
119 | switch (src->key) { | |
120 | case SR_CONF_NUM_LOGIC_CHANNELS: | |
121 | num_logic_channels = g_variant_get_int32(src->data); | |
122 | break; | |
123 | case SR_CONF_NUM_ANALOG_CHANNELS: | |
124 | num_analog_channels = g_variant_get_int32(src->data); | |
125 | break; | |
126 | case SR_CONF_LIMIT_FRAMES: | |
127 | limit_frames = g_variant_get_uint64(src->data); | |
128 | break; | |
129 | } | |
130 | } | |
131 | ||
132 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
133 | sdi->status = SR_ST_INACTIVE; | |
134 | sdi->model = g_strdup("Demo device"); | |
135 | ||
136 | devc = g_malloc0(sizeof(struct dev_context)); | |
137 | devc->cur_samplerate = SR_KHZ(200); | |
138 | devc->num_logic_channels = num_logic_channels; | |
139 | devc->logic_unitsize = (devc->num_logic_channels + 7) / 8; | |
140 | devc->all_logic_channels_mask = 1UL << 0; | |
141 | devc->all_logic_channels_mask <<= devc->num_logic_channels; | |
142 | devc->all_logic_channels_mask--; | |
143 | devc->logic_pattern = DEFAULT_LOGIC_PATTERN; | |
144 | devc->num_analog_channels = num_analog_channels; | |
145 | devc->limit_frames = limit_frames; | |
146 | devc->capture_ratio = 20; | |
147 | devc->stl = NULL; | |
148 | ||
149 | if (num_logic_channels > 0) { | |
150 | /* Logic channels, all in one channel group. */ | |
151 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
152 | cg->name = g_strdup("Logic"); | |
153 | for (i = 0; i < num_logic_channels; i++) { | |
154 | sprintf(channel_name, "D%d", i); | |
155 | ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name); | |
156 | cg->channels = g_slist_append(cg->channels, ch); | |
157 | } | |
158 | sdi->channel_groups = g_slist_append(NULL, cg); | |
159 | } | |
160 | ||
161 | /* Analog channels, channel groups and pattern generators. */ | |
162 | devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal); | |
163 | if (num_analog_channels > 0) { | |
164 | pattern = 0; | |
165 | /* An "Analog" channel group with all analog channels in it. */ | |
166 | acg = g_malloc0(sizeof(struct sr_channel_group)); | |
167 | acg->name = g_strdup("Analog"); | |
168 | sdi->channel_groups = g_slist_append(sdi->channel_groups, acg); | |
169 | ||
170 | for (i = 0; i < num_analog_channels; i++) { | |
171 | snprintf(channel_name, 16, "A%d", i); | |
172 | ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG, | |
173 | TRUE, channel_name); | |
174 | acg->channels = g_slist_append(acg->channels, ch); | |
175 | ||
176 | /* Every analog channel gets its own channel group as well. */ | |
177 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
178 | cg->name = g_strdup(channel_name); | |
179 | cg->channels = g_slist_append(NULL, ch); | |
180 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
181 | ||
182 | /* Every channel gets a generator struct. */ | |
183 | ag = g_malloc(sizeof(struct analog_gen)); | |
184 | ag->ch = ch; | |
185 | ag->amplitude = DEFAULT_ANALOG_AMPLITUDE; | |
186 | sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2); | |
187 | ag->packet.meaning->channels = cg->channels; | |
188 | ag->packet.meaning->mq = 0; | |
189 | ag->packet.meaning->mqflags = 0; | |
190 | ag->packet.meaning->unit = SR_UNIT_VOLT; | |
191 | ag->packet.data = ag->pattern_data; | |
192 | ag->pattern = pattern; | |
193 | ag->avg_val = 0.0f; | |
194 | ag->num_avgs = 0; | |
195 | g_hash_table_insert(devc->ch_ag, ch, ag); | |
196 | ||
197 | if (++pattern == ARRAY_SIZE(analog_pattern_str)) | |
198 | pattern = 0; | |
199 | } | |
200 | } | |
201 | ||
202 | sdi->priv = devc; | |
203 | ||
204 | return std_scan_complete(di, g_slist_append(NULL, sdi)); | |
205 | } | |
206 | ||
207 | static void clear_helper(struct dev_context *devc) | |
208 | { | |
209 | GHashTableIter iter; | |
210 | void *value; | |
211 | ||
212 | /* Analog generators. */ | |
213 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
214 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
215 | g_free(value); | |
216 | g_hash_table_unref(devc->ch_ag); | |
217 | } | |
218 | ||
219 | static int dev_clear(const struct sr_dev_driver *di) | |
220 | { | |
221 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); | |
222 | } | |
223 | ||
224 | static int config_get(uint32_t key, GVariant **data, | |
225 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
226 | { | |
227 | struct dev_context *devc; | |
228 | struct sr_channel *ch; | |
229 | struct analog_gen *ag; | |
230 | int pattern; | |
231 | ||
232 | if (!sdi) | |
233 | return SR_ERR_ARG; | |
234 | ||
235 | devc = sdi->priv; | |
236 | switch (key) { | |
237 | case SR_CONF_SAMPLERATE: | |
238 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
239 | break; | |
240 | case SR_CONF_LIMIT_SAMPLES: | |
241 | *data = g_variant_new_uint64(devc->limit_samples); | |
242 | break; | |
243 | case SR_CONF_LIMIT_MSEC: | |
244 | *data = g_variant_new_uint64(devc->limit_msec); | |
245 | break; | |
246 | case SR_CONF_LIMIT_FRAMES: | |
247 | *data = g_variant_new_uint64(devc->limit_frames); | |
248 | break; | |
249 | case SR_CONF_AVERAGING: | |
250 | *data = g_variant_new_boolean(devc->avg); | |
251 | break; | |
252 | case SR_CONF_AVG_SAMPLES: | |
253 | *data = g_variant_new_uint64(devc->avg_samples); | |
254 | break; | |
255 | case SR_CONF_PATTERN_MODE: | |
256 | if (!cg) | |
257 | return SR_ERR_CHANNEL_GROUP; | |
258 | /* Any channel in the group will do. */ | |
259 | ch = cg->channels->data; | |
260 | if (ch->type == SR_CHANNEL_LOGIC) { | |
261 | pattern = devc->logic_pattern; | |
262 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
263 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
264 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
265 | pattern = ag->pattern; | |
266 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
267 | } else | |
268 | return SR_ERR_BUG; | |
269 | break; | |
270 | case SR_CONF_AMPLITUDE: | |
271 | if (!cg) | |
272 | return SR_ERR_CHANNEL_GROUP; | |
273 | /* Any channel in the group will do. */ | |
274 | ch = cg->channels->data; | |
275 | if (ch->type != SR_CHANNEL_ANALOG) | |
276 | return SR_ERR_ARG; | |
277 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
278 | *data = g_variant_new_double(ag->amplitude); | |
279 | break; | |
280 | case SR_CONF_CAPTURE_RATIO: | |
281 | *data = g_variant_new_uint64(devc->capture_ratio); | |
282 | break; | |
283 | default: | |
284 | return SR_ERR_NA; | |
285 | } | |
286 | ||
287 | return SR_OK; | |
288 | } | |
289 | ||
290 | static int config_set(uint32_t key, GVariant *data, | |
291 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
292 | { | |
293 | struct dev_context *devc; | |
294 | struct analog_gen *ag; | |
295 | struct sr_channel *ch; | |
296 | GSList *l; | |
297 | int logic_pattern, analog_pattern; | |
298 | ||
299 | devc = sdi->priv; | |
300 | ||
301 | switch (key) { | |
302 | case SR_CONF_SAMPLERATE: | |
303 | devc->cur_samplerate = g_variant_get_uint64(data); | |
304 | break; | |
305 | case SR_CONF_LIMIT_SAMPLES: | |
306 | devc->limit_msec = 0; | |
307 | devc->limit_samples = g_variant_get_uint64(data); | |
308 | break; | |
309 | case SR_CONF_LIMIT_MSEC: | |
310 | devc->limit_msec = g_variant_get_uint64(data); | |
311 | devc->limit_samples = 0; | |
312 | break; | |
313 | case SR_CONF_LIMIT_FRAMES: | |
314 | devc->limit_frames = g_variant_get_uint64(data); | |
315 | break; | |
316 | case SR_CONF_AVERAGING: | |
317 | devc->avg = g_variant_get_boolean(data); | |
318 | sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling"); | |
319 | break; | |
320 | case SR_CONF_AVG_SAMPLES: | |
321 | devc->avg_samples = g_variant_get_uint64(data); | |
322 | sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples); | |
323 | break; | |
324 | case SR_CONF_PATTERN_MODE: | |
325 | if (!cg) | |
326 | return SR_ERR_CHANNEL_GROUP; | |
327 | logic_pattern = std_str_idx(data, ARRAY_AND_SIZE(logic_pattern_str)); | |
328 | analog_pattern = std_str_idx(data, ARRAY_AND_SIZE(analog_pattern_str)); | |
329 | if (logic_pattern < 0 && analog_pattern < 0) | |
330 | return SR_ERR_ARG; | |
331 | for (l = cg->channels; l; l = l->next) { | |
332 | ch = l->data; | |
333 | if (ch->type == SR_CHANNEL_LOGIC) { | |
334 | if (logic_pattern == -1) | |
335 | return SR_ERR_ARG; | |
336 | sr_dbg("Setting logic pattern to %s", | |
337 | logic_pattern_str[logic_pattern]); | |
338 | devc->logic_pattern = logic_pattern; | |
339 | /* Might as well do this now, these are static. */ | |
340 | if (logic_pattern == PATTERN_ALL_LOW) | |
341 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); | |
342 | else if (logic_pattern == PATTERN_ALL_HIGH) | |
343 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); | |
344 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
345 | if (analog_pattern == -1) | |
346 | return SR_ERR_ARG; | |
347 | sr_dbg("Setting analog pattern for channel %s to %s", | |
348 | ch->name, analog_pattern_str[analog_pattern]); | |
349 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
350 | ag->pattern = analog_pattern; | |
351 | } else | |
352 | return SR_ERR_BUG; | |
353 | } | |
354 | break; | |
355 | case SR_CONF_AMPLITUDE: | |
356 | if (!cg) | |
357 | return SR_ERR_CHANNEL_GROUP; | |
358 | for (l = cg->channels; l; l = l->next) { | |
359 | ch = l->data; | |
360 | if (ch->type != SR_CHANNEL_ANALOG) | |
361 | return SR_ERR_ARG; | |
362 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
363 | ag->amplitude = g_variant_get_double(data); | |
364 | } | |
365 | break; | |
366 | case SR_CONF_CAPTURE_RATIO: | |
367 | devc->capture_ratio = g_variant_get_uint64(data); | |
368 | break; | |
369 | default: | |
370 | return SR_ERR_NA; | |
371 | } | |
372 | ||
373 | return SR_OK; | |
374 | } | |
375 | ||
376 | static int config_list(uint32_t key, GVariant **data, | |
377 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
378 | { | |
379 | struct sr_channel *ch; | |
380 | ||
381 | if (!cg) { | |
382 | switch (key) { | |
383 | case SR_CONF_SCAN_OPTIONS: | |
384 | case SR_CONF_DEVICE_OPTIONS: | |
385 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
386 | case SR_CONF_SAMPLERATE: | |
387 | *data = std_gvar_samplerates_steps(ARRAY_AND_SIZE(samplerates)); | |
388 | break; | |
389 | case SR_CONF_TRIGGER_MATCH: | |
390 | *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches)); | |
391 | break; | |
392 | default: | |
393 | return SR_ERR_NA; | |
394 | } | |
395 | } else { | |
396 | ch = cg->channels->data; | |
397 | switch (key) { | |
398 | case SR_CONF_DEVICE_OPTIONS: | |
399 | if (ch->type == SR_CHANNEL_LOGIC) | |
400 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_logic)); | |
401 | else if (ch->type == SR_CHANNEL_ANALOG) { | |
402 | if (strcmp(cg->name, "Analog") == 0) | |
403 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog_group)); | |
404 | else | |
405 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog_channel)); | |
406 | } | |
407 | else | |
408 | return SR_ERR_BUG; | |
409 | break; | |
410 | case SR_CONF_PATTERN_MODE: | |
411 | /* The analog group (with all 4 channels) shall not have a pattern property. */ | |
412 | if (strcmp(cg->name, "Analog") == 0) | |
413 | return SR_ERR_NA; | |
414 | ||
415 | if (ch->type == SR_CHANNEL_LOGIC) | |
416 | *data = g_variant_new_strv(ARRAY_AND_SIZE(logic_pattern_str)); | |
417 | else if (ch->type == SR_CHANNEL_ANALOG) | |
418 | *data = g_variant_new_strv(ARRAY_AND_SIZE(analog_pattern_str)); | |
419 | else | |
420 | return SR_ERR_BUG; | |
421 | break; | |
422 | default: | |
423 | return SR_ERR_NA; | |
424 | } | |
425 | } | |
426 | ||
427 | return SR_OK; | |
428 | } | |
429 | ||
430 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
431 | { | |
432 | struct dev_context *devc; | |
433 | GSList *l; | |
434 | struct sr_channel *ch; | |
435 | int bitpos; | |
436 | uint8_t mask; | |
437 | GHashTableIter iter; | |
438 | void *value; | |
439 | struct sr_trigger *trigger; | |
440 | ||
441 | devc = sdi->priv; | |
442 | devc->sent_samples = 0; | |
443 | devc->sent_frame_samples = 0; | |
444 | ||
445 | /* Setup triggers */ | |
446 | if ((trigger = sr_session_trigger_get(sdi->session))) { | |
447 | int pre_trigger_samples = 0; | |
448 | if (devc->limit_samples > 0) | |
449 | pre_trigger_samples = (devc->capture_ratio * devc->limit_samples) / 100; | |
450 | devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples); | |
451 | if (!devc->stl) | |
452 | return SR_ERR_MALLOC; | |
453 | ||
454 | /* Disable all analog channels since using them when there are logic | |
455 | * triggers set up would require having pre-trigger sample buffers | |
456 | * for analog sample data. | |
457 | */ | |
458 | for (l = sdi->channels; l; l = l->next) { | |
459 | ch = l->data; | |
460 | if (ch->type == SR_CHANNEL_ANALOG) | |
461 | ch->enabled = FALSE; | |
462 | } | |
463 | } | |
464 | devc->trigger_fired = FALSE; | |
465 | ||
466 | /* | |
467 | * Determine the numbers of logic and analog channels that are | |
468 | * involved in the acquisition. Determine an offset and a mask to | |
469 | * remove excess logic data content before datafeed submission. | |
470 | */ | |
471 | devc->enabled_logic_channels = 0; | |
472 | devc->enabled_analog_channels = 0; | |
473 | for (l = sdi->channels; l; l = l->next) { | |
474 | ch = l->data; | |
475 | if (!ch->enabled) | |
476 | continue; | |
477 | if (ch->type == SR_CHANNEL_ANALOG) { | |
478 | devc->enabled_analog_channels++; | |
479 | continue; | |
480 | } | |
481 | if (ch->type != SR_CHANNEL_LOGIC) | |
482 | continue; | |
483 | /* | |
484 | * TODO: Need we create a channel map here, such that the | |
485 | * session datafeed packets will have a dense representation | |
486 | * of the enabled channels' data? For example store channels | |
487 | * D3 and D5 in bit positions 0 and 1 respectively, when all | |
488 | * other channels are disabled? The current implementation | |
489 | * generates a sparse layout, might provide data for logic | |
490 | * channels that are disabled while it might suppress data | |
491 | * from enabled channels at the same time. | |
492 | */ | |
493 | devc->enabled_logic_channels++; | |
494 | } | |
495 | devc->first_partial_logic_index = devc->enabled_logic_channels / 8; | |
496 | bitpos = devc->enabled_logic_channels % 8; | |
497 | mask = (1 << bitpos) - 1; | |
498 | devc->first_partial_logic_mask = mask; | |
499 | sr_dbg("num logic %zu, partial off %zu, mask 0x%02x.", | |
500 | devc->enabled_logic_channels, | |
501 | devc->first_partial_logic_index, | |
502 | devc->first_partial_logic_mask); | |
503 | ||
504 | /* | |
505 | * Have the waveform for analog patterns pre-generated. It's | |
506 | * supposed to be periodic, so the generator just needs to | |
507 | * access the prepared sample data (DDS style). | |
508 | */ | |
509 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
510 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
511 | demo_generate_analog_pattern(value, devc->cur_samplerate); | |
512 | ||
513 | sr_session_source_add(sdi->session, -1, 0, 100, | |
514 | demo_prepare_data, (struct sr_dev_inst *)sdi); | |
515 | ||
516 | std_session_send_df_header(sdi); | |
517 | ||
518 | if (devc->limit_frames > 0) | |
519 | std_session_send_frame_begin(sdi); | |
520 | ||
521 | /* We use this timestamp to decide how many more samples to send. */ | |
522 | devc->start_us = g_get_monotonic_time(); | |
523 | devc->spent_us = 0; | |
524 | devc->step = 0; | |
525 | ||
526 | return SR_OK; | |
527 | } | |
528 | ||
529 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
530 | { | |
531 | struct dev_context *devc; | |
532 | ||
533 | sr_session_source_remove(sdi->session, -1); | |
534 | ||
535 | devc = sdi->priv; | |
536 | if (devc->limit_frames > 0) | |
537 | std_session_send_frame_end(sdi); | |
538 | ||
539 | std_session_send_df_end(sdi); | |
540 | ||
541 | if (devc->stl) { | |
542 | soft_trigger_logic_free(devc->stl); | |
543 | devc->stl = NULL; | |
544 | } | |
545 | ||
546 | return SR_OK; | |
547 | } | |
548 | ||
549 | static struct sr_dev_driver demo_driver_info = { | |
550 | .name = "demo", | |
551 | .longname = "Demo driver and pattern generator", | |
552 | .api_version = 1, | |
553 | .init = std_init, | |
554 | .cleanup = std_cleanup, | |
555 | .scan = scan, | |
556 | .dev_list = std_dev_list, | |
557 | .dev_clear = dev_clear, | |
558 | .config_get = config_get, | |
559 | .config_set = config_set, | |
560 | .config_list = config_list, | |
561 | .dev_open = std_dummy_dev_open, | |
562 | .dev_close = std_dummy_dev_close, | |
563 | .dev_acquisition_start = dev_acquisition_start, | |
564 | .dev_acquisition_stop = dev_acquisition_stop, | |
565 | .context = NULL, | |
566 | }; | |
567 | SR_REGISTER_DEV_DRIVER(demo_driver_info); |