]>
Commit | Line | Data |
---|---|---|
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 | * Copyright (C) 2019 Frank Stettner <frank-stettner@gmx.net> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
22 | */ | |
23 | ||
24 | #include <config.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <math.h> | |
28 | #include <libsigrok/libsigrok.h> | |
29 | #include "libsigrok-internal.h" | |
30 | #include "protocol.h" | |
31 | ||
32 | #define DEFAULT_NUM_LOGIC_CHANNELS 8 | |
33 | #define DEFAULT_LOGIC_PATTERN PATTERN_SIGROK | |
34 | ||
35 | #define DEFAULT_NUM_ANALOG_CHANNELS 4 | |
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 | SR_CONF_OFFSET | SR_CONF_GET | SR_CONF_SET, | |
81 | }; | |
82 | ||
83 | static const uint32_t devopts_cg_analog_channel[] = { | |
84 | SR_CONF_MEASURED_QUANTITY | SR_CONF_GET | SR_CONF_SET, | |
85 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
86 | SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET, | |
87 | SR_CONF_OFFSET | SR_CONF_GET | SR_CONF_SET, | |
88 | }; | |
89 | ||
90 | static const int32_t trigger_matches[] = { | |
91 | SR_TRIGGER_ZERO, | |
92 | SR_TRIGGER_ONE, | |
93 | SR_TRIGGER_RISING, | |
94 | SR_TRIGGER_FALLING, | |
95 | SR_TRIGGER_EDGE, | |
96 | }; | |
97 | ||
98 | static const uint64_t samplerates[] = { | |
99 | SR_HZ(1), | |
100 | SR_GHZ(1), | |
101 | SR_HZ(1), | |
102 | }; | |
103 | ||
104 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
105 | { | |
106 | struct dev_context *devc; | |
107 | struct sr_dev_inst *sdi; | |
108 | struct sr_channel *ch; | |
109 | struct sr_channel_group *cg, *acg; | |
110 | struct sr_config *src; | |
111 | struct analog_gen *ag; | |
112 | GSList *l; | |
113 | int num_logic_channels, num_analog_channels, pattern, i; | |
114 | uint64_t limit_frames; | |
115 | char channel_name[16]; | |
116 | ||
117 | num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS; | |
118 | num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS; | |
119 | limit_frames = DEFAULT_LIMIT_FRAMES; | |
120 | for (l = options; l; l = l->next) { | |
121 | src = l->data; | |
122 | switch (src->key) { | |
123 | case SR_CONF_NUM_LOGIC_CHANNELS: | |
124 | num_logic_channels = g_variant_get_int32(src->data); | |
125 | break; | |
126 | case SR_CONF_NUM_ANALOG_CHANNELS: | |
127 | num_analog_channels = g_variant_get_int32(src->data); | |
128 | break; | |
129 | case SR_CONF_LIMIT_FRAMES: | |
130 | limit_frames = g_variant_get_uint64(src->data); | |
131 | break; | |
132 | } | |
133 | } | |
134 | ||
135 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
136 | sdi->status = SR_ST_INACTIVE; | |
137 | sdi->model = g_strdup("Demo device"); | |
138 | ||
139 | devc = g_malloc0(sizeof(struct dev_context)); | |
140 | devc->cur_samplerate = SR_KHZ(200); | |
141 | devc->num_logic_channels = num_logic_channels; | |
142 | devc->logic_unitsize = (devc->num_logic_channels + 7) / 8; | |
143 | devc->all_logic_channels_mask = 1UL << 0; | |
144 | devc->all_logic_channels_mask <<= devc->num_logic_channels; | |
145 | devc->all_logic_channels_mask--; | |
146 | devc->logic_pattern = DEFAULT_LOGIC_PATTERN; | |
147 | devc->num_analog_channels = num_analog_channels; | |
148 | devc->limit_frames = limit_frames; | |
149 | devc->capture_ratio = 20; | |
150 | devc->stl = NULL; | |
151 | ||
152 | if (num_logic_channels > 0) { | |
153 | /* Logic channels, all in one channel group. */ | |
154 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
155 | cg->name = g_strdup("Logic"); | |
156 | for (i = 0; i < num_logic_channels; i++) { | |
157 | sprintf(channel_name, "D%d", i); | |
158 | ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name); | |
159 | cg->channels = g_slist_append(cg->channels, ch); | |
160 | } | |
161 | sdi->channel_groups = g_slist_append(NULL, cg); | |
162 | } | |
163 | ||
164 | /* Analog channels, channel groups and pattern generators. */ | |
165 | devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal); | |
166 | if (num_analog_channels > 0) { | |
167 | /* | |
168 | * Have the waveform for analog patterns pre-generated. It's | |
169 | * supposed to be periodic, so the generator just needs to | |
170 | * access the prepared sample data (DDS style). | |
171 | */ | |
172 | demo_generate_analog_pattern(devc); | |
173 | ||
174 | pattern = 0; | |
175 | /* An "Analog" channel group with all analog channels in it. */ | |
176 | acg = g_malloc0(sizeof(struct sr_channel_group)); | |
177 | acg->name = g_strdup("Analog"); | |
178 | sdi->channel_groups = g_slist_append(sdi->channel_groups, acg); | |
179 | ||
180 | for (i = 0; i < num_analog_channels; i++) { | |
181 | snprintf(channel_name, 16, "A%d", i); | |
182 | ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG, | |
183 | TRUE, channel_name); | |
184 | acg->channels = g_slist_append(acg->channels, ch); | |
185 | ||
186 | /* Every analog channel gets its own channel group as well. */ | |
187 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
188 | cg->name = g_strdup(channel_name); | |
189 | cg->channels = g_slist_append(NULL, ch); | |
190 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
191 | ||
192 | /* Every channel gets a generator struct. */ | |
193 | ag = g_malloc(sizeof(struct analog_gen)); | |
194 | ag->ch = ch; | |
195 | ag->mq = SR_MQ_VOLTAGE; | |
196 | ag->mq_flags = SR_MQFLAG_DC; | |
197 | ag->unit = SR_UNIT_VOLT; | |
198 | ag->amplitude = DEFAULT_ANALOG_AMPLITUDE; | |
199 | ag->offset = DEFAULT_ANALOG_OFFSET; | |
200 | sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2); | |
201 | ag->packet.meaning->channels = cg->channels; | |
202 | ag->packet.meaning->mq = ag->mq; | |
203 | ag->packet.meaning->mqflags = ag->mq_flags; | |
204 | ag->packet.meaning->unit = ag->unit; | |
205 | ag->packet.encoding->digits = DEFAULT_ANALOG_ENCODING_DIGITS; | |
206 | ag->packet.spec->spec_digits = DEFAULT_ANALOG_SPEC_DIGITS; | |
207 | ag->packet.data = devc->analog_patterns[pattern]; | |
208 | ag->pattern = pattern; | |
209 | ag->avg_val = 0.0f; | |
210 | ag->num_avgs = 0; | |
211 | g_hash_table_insert(devc->ch_ag, ch, ag); | |
212 | ||
213 | if (++pattern == ARRAY_SIZE(analog_pattern_str)) | |
214 | pattern = 0; | |
215 | } | |
216 | } | |
217 | ||
218 | sdi->priv = devc; | |
219 | ||
220 | return std_scan_complete(di, g_slist_append(NULL, sdi)); | |
221 | } | |
222 | ||
223 | static void clear_helper(struct dev_context *devc) | |
224 | { | |
225 | GHashTableIter iter; | |
226 | void *value; | |
227 | ||
228 | /* Analog generators. */ | |
229 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
230 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
231 | g_free(value); | |
232 | g_hash_table_unref(devc->ch_ag); | |
233 | } | |
234 | ||
235 | static int dev_clear(const struct sr_dev_driver *di) | |
236 | { | |
237 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); | |
238 | } | |
239 | ||
240 | static int config_get(uint32_t key, GVariant **data, | |
241 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
242 | { | |
243 | struct dev_context *devc; | |
244 | struct sr_channel *ch; | |
245 | struct analog_gen *ag; | |
246 | GVariant *mq_arr[2]; | |
247 | int pattern; | |
248 | ||
249 | if (!sdi) | |
250 | return SR_ERR_ARG; | |
251 | ||
252 | devc = sdi->priv; | |
253 | switch (key) { | |
254 | case SR_CONF_SAMPLERATE: | |
255 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
256 | break; | |
257 | case SR_CONF_LIMIT_SAMPLES: | |
258 | *data = g_variant_new_uint64(devc->limit_samples); | |
259 | break; | |
260 | case SR_CONF_LIMIT_MSEC: | |
261 | *data = g_variant_new_uint64(devc->limit_msec); | |
262 | break; | |
263 | case SR_CONF_LIMIT_FRAMES: | |
264 | *data = g_variant_new_uint64(devc->limit_frames); | |
265 | break; | |
266 | case SR_CONF_AVERAGING: | |
267 | *data = g_variant_new_boolean(devc->avg); | |
268 | break; | |
269 | case SR_CONF_AVG_SAMPLES: | |
270 | *data = g_variant_new_uint64(devc->avg_samples); | |
271 | break; | |
272 | case SR_CONF_MEASURED_QUANTITY: | |
273 | if (!cg) | |
274 | return SR_ERR_CHANNEL_GROUP; | |
275 | /* Any channel in the group will do. */ | |
276 | ch = cg->channels->data; | |
277 | if (ch->type != SR_CHANNEL_ANALOG) | |
278 | return SR_ERR_ARG; | |
279 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
280 | mq_arr[0] = g_variant_new_uint32(ag->mq); | |
281 | mq_arr[1] = g_variant_new_uint64(ag->mq_flags); | |
282 | *data = g_variant_new_tuple(mq_arr, 2); | |
283 | break; | |
284 | case SR_CONF_PATTERN_MODE: | |
285 | if (!cg) | |
286 | return SR_ERR_CHANNEL_GROUP; | |
287 | /* Any channel in the group will do. */ | |
288 | ch = cg->channels->data; | |
289 | if (ch->type == SR_CHANNEL_LOGIC) { | |
290 | pattern = devc->logic_pattern; | |
291 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
292 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
293 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
294 | pattern = ag->pattern; | |
295 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
296 | } else | |
297 | return SR_ERR_BUG; | |
298 | break; | |
299 | case SR_CONF_AMPLITUDE: | |
300 | if (!cg) | |
301 | return SR_ERR_CHANNEL_GROUP; | |
302 | /* Any channel in the group will do. */ | |
303 | ch = cg->channels->data; | |
304 | if (ch->type != SR_CHANNEL_ANALOG) | |
305 | return SR_ERR_ARG; | |
306 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
307 | *data = g_variant_new_double(ag->amplitude); | |
308 | break; | |
309 | case SR_CONF_OFFSET: | |
310 | if (!cg) | |
311 | return SR_ERR_CHANNEL_GROUP; | |
312 | /* Any channel in the group will do. */ | |
313 | ch = cg->channels->data; | |
314 | if (ch->type != SR_CHANNEL_ANALOG) | |
315 | return SR_ERR_ARG; | |
316 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
317 | *data = g_variant_new_double(ag->offset); | |
318 | break; | |
319 | case SR_CONF_CAPTURE_RATIO: | |
320 | *data = g_variant_new_uint64(devc->capture_ratio); | |
321 | break; | |
322 | default: | |
323 | return SR_ERR_NA; | |
324 | } | |
325 | ||
326 | return SR_OK; | |
327 | } | |
328 | ||
329 | static int config_set(uint32_t key, GVariant *data, | |
330 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
331 | { | |
332 | struct dev_context *devc; | |
333 | struct analog_gen *ag; | |
334 | struct sr_channel *ch; | |
335 | GVariant *mq_tuple_child; | |
336 | GSList *l; | |
337 | int logic_pattern, analog_pattern; | |
338 | ||
339 | devc = sdi->priv; | |
340 | ||
341 | switch (key) { | |
342 | case SR_CONF_SAMPLERATE: | |
343 | devc->cur_samplerate = g_variant_get_uint64(data); | |
344 | break; | |
345 | case SR_CONF_LIMIT_SAMPLES: | |
346 | devc->limit_msec = 0; | |
347 | devc->limit_samples = g_variant_get_uint64(data); | |
348 | break; | |
349 | case SR_CONF_LIMIT_MSEC: | |
350 | devc->limit_msec = g_variant_get_uint64(data); | |
351 | devc->limit_samples = 0; | |
352 | break; | |
353 | case SR_CONF_LIMIT_FRAMES: | |
354 | devc->limit_frames = g_variant_get_uint64(data); | |
355 | break; | |
356 | case SR_CONF_AVERAGING: | |
357 | devc->avg = g_variant_get_boolean(data); | |
358 | sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling"); | |
359 | break; | |
360 | case SR_CONF_AVG_SAMPLES: | |
361 | devc->avg_samples = g_variant_get_uint64(data); | |
362 | sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples); | |
363 | break; | |
364 | case SR_CONF_MEASURED_QUANTITY: | |
365 | if (!cg) | |
366 | return SR_ERR_CHANNEL_GROUP; | |
367 | for (l = cg->channels; l; l = l->next) { | |
368 | ch = l->data; | |
369 | if (ch->type != SR_CHANNEL_ANALOG) | |
370 | return SR_ERR_ARG; | |
371 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
372 | mq_tuple_child = g_variant_get_child_value(data, 0); | |
373 | ag->mq = g_variant_get_uint32(mq_tuple_child); | |
374 | mq_tuple_child = g_variant_get_child_value(data, 1); | |
375 | ag->mq_flags = g_variant_get_uint64(mq_tuple_child); | |
376 | g_variant_unref(mq_tuple_child); | |
377 | } | |
378 | break; | |
379 | case SR_CONF_PATTERN_MODE: | |
380 | if (!cg) | |
381 | return SR_ERR_CHANNEL_GROUP; | |
382 | logic_pattern = std_str_idx(data, ARRAY_AND_SIZE(logic_pattern_str)); | |
383 | analog_pattern = std_str_idx(data, ARRAY_AND_SIZE(analog_pattern_str)); | |
384 | if (logic_pattern < 0 && analog_pattern < 0) | |
385 | return SR_ERR_ARG; | |
386 | for (l = cg->channels; l; l = l->next) { | |
387 | ch = l->data; | |
388 | if (ch->type == SR_CHANNEL_LOGIC) { | |
389 | if (logic_pattern == -1) | |
390 | return SR_ERR_ARG; | |
391 | sr_dbg("Setting logic pattern to %s", | |
392 | logic_pattern_str[logic_pattern]); | |
393 | devc->logic_pattern = logic_pattern; | |
394 | /* Might as well do this now, these are static. */ | |
395 | if (logic_pattern == PATTERN_ALL_LOW) | |
396 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); | |
397 | else if (logic_pattern == PATTERN_ALL_HIGH) | |
398 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); | |
399 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
400 | if (analog_pattern == -1) | |
401 | return SR_ERR_ARG; | |
402 | sr_dbg("Setting analog pattern for channel %s to %s", | |
403 | ch->name, analog_pattern_str[analog_pattern]); | |
404 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
405 | ag->pattern = analog_pattern; | |
406 | } else | |
407 | return SR_ERR_BUG; | |
408 | } | |
409 | break; | |
410 | case SR_CONF_AMPLITUDE: | |
411 | if (!cg) | |
412 | return SR_ERR_CHANNEL_GROUP; | |
413 | for (l = cg->channels; l; l = l->next) { | |
414 | ch = l->data; | |
415 | if (ch->type != SR_CHANNEL_ANALOG) | |
416 | return SR_ERR_ARG; | |
417 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
418 | ag->amplitude = g_variant_get_double(data); | |
419 | } | |
420 | break; | |
421 | case SR_CONF_OFFSET: | |
422 | if (!cg) | |
423 | return SR_ERR_CHANNEL_GROUP; | |
424 | for (l = cg->channels; l; l = l->next) { | |
425 | ch = l->data; | |
426 | if (ch->type != SR_CHANNEL_ANALOG) | |
427 | return SR_ERR_ARG; | |
428 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
429 | ag->offset = g_variant_get_double(data); | |
430 | } | |
431 | break; | |
432 | case SR_CONF_CAPTURE_RATIO: | |
433 | devc->capture_ratio = g_variant_get_uint64(data); | |
434 | break; | |
435 | default: | |
436 | return SR_ERR_NA; | |
437 | } | |
438 | ||
439 | return SR_OK; | |
440 | } | |
441 | ||
442 | static int config_list(uint32_t key, GVariant **data, | |
443 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
444 | { | |
445 | struct sr_channel *ch; | |
446 | ||
447 | if (!cg) { | |
448 | switch (key) { | |
449 | case SR_CONF_SCAN_OPTIONS: | |
450 | case SR_CONF_DEVICE_OPTIONS: | |
451 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
452 | case SR_CONF_SAMPLERATE: | |
453 | *data = std_gvar_samplerates_steps(ARRAY_AND_SIZE(samplerates)); | |
454 | break; | |
455 | case SR_CONF_TRIGGER_MATCH: | |
456 | *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches)); | |
457 | break; | |
458 | default: | |
459 | return SR_ERR_NA; | |
460 | } | |
461 | } else { | |
462 | ch = cg->channels->data; | |
463 | switch (key) { | |
464 | case SR_CONF_DEVICE_OPTIONS: | |
465 | if (ch->type == SR_CHANNEL_LOGIC) | |
466 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_logic)); | |
467 | else if (ch->type == SR_CHANNEL_ANALOG) { | |
468 | if (strcmp(cg->name, "Analog") == 0) | |
469 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog_group)); | |
470 | else | |
471 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog_channel)); | |
472 | } | |
473 | else | |
474 | return SR_ERR_BUG; | |
475 | break; | |
476 | case SR_CONF_PATTERN_MODE: | |
477 | /* The analog group (with all 4 channels) shall not have a pattern property. */ | |
478 | if (strcmp(cg->name, "Analog") == 0) | |
479 | return SR_ERR_NA; | |
480 | ||
481 | if (ch->type == SR_CHANNEL_LOGIC) | |
482 | *data = g_variant_new_strv(ARRAY_AND_SIZE(logic_pattern_str)); | |
483 | else if (ch->type == SR_CHANNEL_ANALOG) | |
484 | *data = g_variant_new_strv(ARRAY_AND_SIZE(analog_pattern_str)); | |
485 | else | |
486 | return SR_ERR_BUG; | |
487 | break; | |
488 | default: | |
489 | return SR_ERR_NA; | |
490 | } | |
491 | } | |
492 | ||
493 | return SR_OK; | |
494 | } | |
495 | ||
496 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
497 | { | |
498 | struct dev_context *devc; | |
499 | GSList *l; | |
500 | struct sr_channel *ch; | |
501 | int bitpos; | |
502 | uint8_t mask; | |
503 | struct sr_trigger *trigger; | |
504 | ||
505 | devc = sdi->priv; | |
506 | devc->sent_samples = 0; | |
507 | devc->sent_frame_samples = 0; | |
508 | ||
509 | /* Setup triggers */ | |
510 | if ((trigger = sr_session_trigger_get(sdi->session))) { | |
511 | int pre_trigger_samples = 0; | |
512 | if (devc->limit_samples > 0) | |
513 | pre_trigger_samples = (devc->capture_ratio * devc->limit_samples) / 100; | |
514 | devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples); | |
515 | if (!devc->stl) | |
516 | return SR_ERR_MALLOC; | |
517 | ||
518 | /* Disable all analog channels since using them when there are logic | |
519 | * triggers set up would require having pre-trigger sample buffers | |
520 | * for analog sample data. | |
521 | */ | |
522 | for (l = sdi->channels; l; l = l->next) { | |
523 | ch = l->data; | |
524 | if (ch->type == SR_CHANNEL_ANALOG) | |
525 | ch->enabled = FALSE; | |
526 | } | |
527 | } | |
528 | devc->trigger_fired = FALSE; | |
529 | ||
530 | /* | |
531 | * Determine the numbers of logic and analog channels that are | |
532 | * involved in the acquisition. Determine an offset and a mask to | |
533 | * remove excess logic data content before datafeed submission. | |
534 | */ | |
535 | devc->enabled_logic_channels = 0; | |
536 | devc->enabled_analog_channels = 0; | |
537 | for (l = sdi->channels; l; l = l->next) { | |
538 | ch = l->data; | |
539 | if (!ch->enabled) | |
540 | continue; | |
541 | if (ch->type == SR_CHANNEL_ANALOG) { | |
542 | devc->enabled_analog_channels++; | |
543 | continue; | |
544 | } | |
545 | if (ch->type != SR_CHANNEL_LOGIC) | |
546 | continue; | |
547 | /* | |
548 | * TODO: Need we create a channel map here, such that the | |
549 | * session datafeed packets will have a dense representation | |
550 | * of the enabled channels' data? For example store channels | |
551 | * D3 and D5 in bit positions 0 and 1 respectively, when all | |
552 | * other channels are disabled? The current implementation | |
553 | * generates a sparse layout, might provide data for logic | |
554 | * channels that are disabled while it might suppress data | |
555 | * from enabled channels at the same time. | |
556 | */ | |
557 | devc->enabled_logic_channels++; | |
558 | } | |
559 | devc->first_partial_logic_index = devc->enabled_logic_channels / 8; | |
560 | bitpos = devc->enabled_logic_channels % 8; | |
561 | mask = (1 << bitpos) - 1; | |
562 | devc->first_partial_logic_mask = mask; | |
563 | sr_dbg("num logic %zu, partial off %zu, mask 0x%02x.", | |
564 | devc->enabled_logic_channels, | |
565 | devc->first_partial_logic_index, | |
566 | devc->first_partial_logic_mask); | |
567 | ||
568 | sr_session_source_add(sdi->session, -1, 0, 100, | |
569 | demo_prepare_data, (struct sr_dev_inst *)sdi); | |
570 | ||
571 | std_session_send_df_header(sdi); | |
572 | ||
573 | if (devc->limit_frames > 0) | |
574 | std_session_send_frame_begin(sdi); | |
575 | ||
576 | /* We use this timestamp to decide how many more samples to send. */ | |
577 | devc->start_us = g_get_monotonic_time(); | |
578 | devc->spent_us = 0; | |
579 | devc->step = 0; | |
580 | ||
581 | return SR_OK; | |
582 | } | |
583 | ||
584 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
585 | { | |
586 | struct dev_context *devc; | |
587 | ||
588 | sr_session_source_remove(sdi->session, -1); | |
589 | ||
590 | devc = sdi->priv; | |
591 | if (devc->limit_frames > 0) | |
592 | std_session_send_frame_end(sdi); | |
593 | ||
594 | std_session_send_df_end(sdi); | |
595 | ||
596 | if (devc->stl) { | |
597 | soft_trigger_logic_free(devc->stl); | |
598 | devc->stl = NULL; | |
599 | } | |
600 | ||
601 | return SR_OK; | |
602 | } | |
603 | ||
604 | static struct sr_dev_driver demo_driver_info = { | |
605 | .name = "demo", | |
606 | .longname = "Demo driver and pattern generator", | |
607 | .api_version = 1, | |
608 | .init = std_init, | |
609 | .cleanup = std_cleanup, | |
610 | .scan = scan, | |
611 | .dev_list = std_dev_list, | |
612 | .dev_clear = dev_clear, | |
613 | .config_get = config_get, | |
614 | .config_set = config_set, | |
615 | .config_list = config_list, | |
616 | .dev_open = std_dummy_dev_open, | |
617 | .dev_close = std_dummy_dev_close, | |
618 | .dev_acquisition_start = dev_acquisition_start, | |
619 | .dev_acquisition_stop = dev_acquisition_stop, | |
620 | .context = NULL, | |
621 | }; | |
622 | SR_REGISTER_DEV_DRIVER(demo_driver_info); |