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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 128 | |
32 | #define DEFAULT_ENABLED_LOGIC_CHANNELS 8 | |
33 | #define DEFAULT_LOGIC_PATTERN PATTERN_SIGROK | |
34 | ||
35 | #define DEFAULT_NUM_ANALOG_CHANNELS 4 | |
36 | #define DEFAULT_ENABLED_ANALOG_CHANNELS 4 | |
37 | #define DEFAULT_ANALOG_AMPLITUDE 10 | |
38 | ||
39 | static const char *logic_pattern_str[] = { | |
40 | "sigrok", | |
41 | "random", | |
42 | "incremental", | |
43 | "all-low", | |
44 | "all-high", | |
45 | "squid", | |
46 | }; | |
47 | ||
48 | static const uint32_t drvopts[] = { | |
49 | SR_CONF_DEMO_DEV, | |
50 | SR_CONF_LOGIC_ANALYZER, | |
51 | SR_CONF_OSCILLOSCOPE, | |
52 | }; | |
53 | ||
54 | static const uint32_t scanopts[] = { | |
55 | SR_CONF_NUM_LOGIC_CHANNELS, | |
56 | SR_CONF_NUM_ANALOG_CHANNELS, | |
57 | }; | |
58 | ||
59 | static const uint32_t devopts[] = { | |
60 | SR_CONF_CONTINUOUS, | |
61 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
62 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
63 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
64 | SR_CONF_AVERAGING | SR_CONF_GET | SR_CONF_SET, | |
65 | SR_CONF_AVG_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
66 | }; | |
67 | ||
68 | static const uint32_t devopts_cg_logic[] = { | |
69 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
70 | }; | |
71 | ||
72 | static const uint32_t devopts_cg_analog_group[] = { | |
73 | SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET, | |
74 | }; | |
75 | ||
76 | static const uint32_t devopts_cg_analog_channel[] = { | |
77 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
78 | SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET, | |
79 | }; | |
80 | ||
81 | static const uint64_t samplerates[] = { | |
82 | SR_HZ(1), | |
83 | SR_GHZ(1), | |
84 | SR_HZ(1), | |
85 | }; | |
86 | ||
87 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
88 | { | |
89 | struct dev_context *devc; | |
90 | struct sr_dev_inst *sdi; | |
91 | struct sr_channel *ch; | |
92 | struct sr_channel_group *cg, *acg; | |
93 | struct sr_config *src; | |
94 | struct analog_gen *ag; | |
95 | GSList *l; | |
96 | int num_logic_channels, num_analog_channels, pattern, i; | |
97 | char channel_name[16]; | |
98 | gboolean enabled; | |
99 | ||
100 | num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS; | |
101 | num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS; | |
102 | for (l = options; l; l = l->next) { | |
103 | src = l->data; | |
104 | switch (src->key) { | |
105 | case SR_CONF_NUM_LOGIC_CHANNELS: | |
106 | num_logic_channels = g_variant_get_int32(src->data); | |
107 | break; | |
108 | case SR_CONF_NUM_ANALOG_CHANNELS: | |
109 | num_analog_channels = g_variant_get_int32(src->data); | |
110 | break; | |
111 | } | |
112 | } | |
113 | ||
114 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
115 | sdi->status = SR_ST_INACTIVE; | |
116 | sdi->model = g_strdup("Demo device"); | |
117 | ||
118 | devc = g_malloc0(sizeof(struct dev_context)); | |
119 | devc->cur_samplerate = SR_KHZ(200); | |
120 | devc->num_logic_channels = num_logic_channels; | |
121 | devc->logic_unitsize = (devc->num_logic_channels + 7) / 8; | |
122 | devc->logic_pattern = DEFAULT_LOGIC_PATTERN; | |
123 | devc->num_analog_channels = num_analog_channels; | |
124 | ||
125 | if (num_logic_channels > 0) { | |
126 | /* Logic channels, all in one channel group. */ | |
127 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
128 | cg->name = g_strdup("Logic"); | |
129 | for (i = 0; i < num_logic_channels; i++) { | |
130 | sprintf(channel_name, "D%d", i); | |
131 | enabled = (i < DEFAULT_ENABLED_LOGIC_CHANNELS) ? TRUE : FALSE; | |
132 | ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, enabled, channel_name); | |
133 | cg->channels = g_slist_append(cg->channels, ch); | |
134 | } | |
135 | sdi->channel_groups = g_slist_append(NULL, cg); | |
136 | } | |
137 | ||
138 | /* Analog channels, channel groups and pattern generators. */ | |
139 | if (num_analog_channels > 0) { | |
140 | pattern = 0; | |
141 | /* An "Analog" channel group with all analog channels in it. */ | |
142 | acg = g_malloc0(sizeof(struct sr_channel_group)); | |
143 | acg->name = g_strdup("Analog"); | |
144 | sdi->channel_groups = g_slist_append(sdi->channel_groups, acg); | |
145 | ||
146 | devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal); | |
147 | for (i = 0; i < num_analog_channels; i++) { | |
148 | snprintf(channel_name, 16, "A%d", i); | |
149 | enabled = (i < DEFAULT_ENABLED_ANALOG_CHANNELS) ? TRUE : FALSE; | |
150 | ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG, | |
151 | enabled, channel_name); | |
152 | acg->channels = g_slist_append(acg->channels, ch); | |
153 | ||
154 | /* Every analog channel gets its own channel group as well. */ | |
155 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
156 | cg->name = g_strdup(channel_name); | |
157 | cg->channels = g_slist_append(NULL, ch); | |
158 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
159 | ||
160 | /* Every channel gets a generator struct. */ | |
161 | ag = g_malloc(sizeof(struct analog_gen)); | |
162 | ag->amplitude = DEFAULT_ANALOG_AMPLITUDE; | |
163 | sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2); | |
164 | ag->packet.meaning->channels = cg->channels; | |
165 | ag->packet.meaning->mq = 0; | |
166 | ag->packet.meaning->mqflags = 0; | |
167 | ag->packet.meaning->unit = SR_UNIT_VOLT; | |
168 | ag->packet.data = ag->pattern_data; | |
169 | ag->pattern = pattern; | |
170 | ag->avg_val = 0.0f; | |
171 | ag->num_avgs = 0; | |
172 | g_hash_table_insert(devc->ch_ag, ch, ag); | |
173 | ||
174 | if (++pattern == ARRAY_SIZE(analog_pattern_str)) | |
175 | pattern = 0; | |
176 | } | |
177 | } | |
178 | ||
179 | sdi->priv = devc; | |
180 | ||
181 | return std_scan_complete(di, g_slist_append(NULL, sdi)); | |
182 | } | |
183 | ||
184 | static int dev_open(struct sr_dev_inst *sdi) | |
185 | { | |
186 | sdi->status = SR_ST_ACTIVE; | |
187 | ||
188 | return SR_OK; | |
189 | } | |
190 | ||
191 | static int dev_close(struct sr_dev_inst *sdi) | |
192 | { | |
193 | sdi->status = SR_ST_INACTIVE; | |
194 | ||
195 | return SR_OK; | |
196 | } | |
197 | ||
198 | static void clear_helper(void *priv) | |
199 | { | |
200 | struct dev_context *devc; | |
201 | GHashTableIter iter; | |
202 | void *value; | |
203 | ||
204 | devc = priv; | |
205 | ||
206 | /* Analog generators. */ | |
207 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
208 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
209 | g_free(value); | |
210 | g_hash_table_unref(devc->ch_ag); | |
211 | g_free(devc); | |
212 | } | |
213 | ||
214 | static int dev_clear(const struct sr_dev_driver *di) | |
215 | { | |
216 | return std_dev_clear(di, clear_helper); | |
217 | } | |
218 | ||
219 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
220 | const struct sr_channel_group *cg) | |
221 | { | |
222 | struct dev_context *devc; | |
223 | struct sr_channel *ch; | |
224 | struct analog_gen *ag; | |
225 | int pattern; | |
226 | ||
227 | if (!sdi) | |
228 | return SR_ERR_ARG; | |
229 | ||
230 | devc = sdi->priv; | |
231 | switch (key) { | |
232 | case SR_CONF_SAMPLERATE: | |
233 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
234 | break; | |
235 | case SR_CONF_LIMIT_SAMPLES: | |
236 | *data = g_variant_new_uint64(devc->limit_samples); | |
237 | break; | |
238 | case SR_CONF_LIMIT_MSEC: | |
239 | *data = g_variant_new_uint64(devc->limit_msec); | |
240 | break; | |
241 | case SR_CONF_AVERAGING: | |
242 | *data = g_variant_new_boolean(devc->avg); | |
243 | break; | |
244 | case SR_CONF_AVG_SAMPLES: | |
245 | *data = g_variant_new_uint64(devc->avg_samples); | |
246 | break; | |
247 | case SR_CONF_PATTERN_MODE: | |
248 | if (!cg) | |
249 | return SR_ERR_CHANNEL_GROUP; | |
250 | /* Any channel in the group will do. */ | |
251 | ch = cg->channels->data; | |
252 | if (ch->type == SR_CHANNEL_LOGIC) { | |
253 | pattern = devc->logic_pattern; | |
254 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
255 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
256 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
257 | pattern = ag->pattern; | |
258 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
259 | } else | |
260 | return SR_ERR_BUG; | |
261 | break; | |
262 | case SR_CONF_AMPLITUDE: | |
263 | if (!cg) | |
264 | return SR_ERR_CHANNEL_GROUP; | |
265 | /* Any channel in the group will do. */ | |
266 | ch = cg->channels->data; | |
267 | if (ch->type != SR_CHANNEL_ANALOG) | |
268 | return SR_ERR_ARG; | |
269 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
270 | *data = g_variant_new_double(ag->amplitude); | |
271 | break; | |
272 | default: | |
273 | return SR_ERR_NA; | |
274 | } | |
275 | ||
276 | return SR_OK; | |
277 | } | |
278 | ||
279 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
280 | const struct sr_channel_group *cg) | |
281 | { | |
282 | struct dev_context *devc; | |
283 | struct analog_gen *ag; | |
284 | struct sr_channel *ch; | |
285 | GSList *l; | |
286 | int logic_pattern, analog_pattern, ret; | |
287 | unsigned int i; | |
288 | const char *stropt; | |
289 | ||
290 | devc = sdi->priv; | |
291 | ||
292 | if (sdi->status != SR_ST_ACTIVE) | |
293 | return SR_ERR_DEV_CLOSED; | |
294 | ||
295 | ret = SR_OK; | |
296 | switch (key) { | |
297 | case SR_CONF_SAMPLERATE: | |
298 | devc->cur_samplerate = g_variant_get_uint64(data); | |
299 | break; | |
300 | case SR_CONF_LIMIT_SAMPLES: | |
301 | devc->limit_msec = 0; | |
302 | devc->limit_samples = g_variant_get_uint64(data); | |
303 | break; | |
304 | case SR_CONF_LIMIT_MSEC: | |
305 | devc->limit_msec = g_variant_get_uint64(data); | |
306 | devc->limit_samples = 0; | |
307 | break; | |
308 | case SR_CONF_AVERAGING: | |
309 | devc->avg = g_variant_get_boolean(data); | |
310 | sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling"); | |
311 | break; | |
312 | case SR_CONF_AVG_SAMPLES: | |
313 | devc->avg_samples = g_variant_get_uint64(data); | |
314 | sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples); | |
315 | break; | |
316 | case SR_CONF_PATTERN_MODE: | |
317 | if (!cg) | |
318 | return SR_ERR_CHANNEL_GROUP; | |
319 | stropt = g_variant_get_string(data, NULL); | |
320 | logic_pattern = analog_pattern = -1; | |
321 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { | |
322 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
323 | logic_pattern = i; | |
324 | break; | |
325 | } | |
326 | } | |
327 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { | |
328 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
329 | analog_pattern = i; | |
330 | break; | |
331 | } | |
332 | } | |
333 | if (logic_pattern == -1 && analog_pattern == -1) | |
334 | return SR_ERR_ARG; | |
335 | for (l = cg->channels; l; l = l->next) { | |
336 | ch = l->data; | |
337 | if (ch->type == SR_CHANNEL_LOGIC) { | |
338 | if (logic_pattern == -1) | |
339 | return SR_ERR_ARG; | |
340 | sr_dbg("Setting logic pattern to %s", | |
341 | logic_pattern_str[logic_pattern]); | |
342 | devc->logic_pattern = logic_pattern; | |
343 | /* Might as well do this now, these are static. */ | |
344 | if (logic_pattern == PATTERN_ALL_LOW) | |
345 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); | |
346 | else if (logic_pattern == PATTERN_ALL_HIGH) | |
347 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); | |
348 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
349 | if (analog_pattern == -1) | |
350 | return SR_ERR_ARG; | |
351 | sr_dbg("Setting analog pattern for channel %s to %s", | |
352 | ch->name, analog_pattern_str[analog_pattern]); | |
353 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
354 | ag->pattern = analog_pattern; | |
355 | } else | |
356 | return SR_ERR_BUG; | |
357 | } | |
358 | break; | |
359 | case SR_CONF_AMPLITUDE: | |
360 | if (!cg) | |
361 | return SR_ERR_CHANNEL_GROUP; | |
362 | for (l = cg->channels; l; l = l->next) { | |
363 | ch = l->data; | |
364 | if (ch->type != SR_CHANNEL_ANALOG) | |
365 | return SR_ERR_ARG; | |
366 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
367 | ag->amplitude = g_variant_get_double(data); | |
368 | } | |
369 | break; | |
370 | default: | |
371 | ret = SR_ERR_NA; | |
372 | } | |
373 | ||
374 | return ret; | |
375 | } | |
376 | ||
377 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
378 | const struct sr_channel_group *cg) | |
379 | { | |
380 | struct sr_channel *ch; | |
381 | GVariant *gvar; | |
382 | GVariantBuilder gvb; | |
383 | ||
384 | if (key == SR_CONF_SCAN_OPTIONS) { | |
385 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
386 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
387 | return SR_OK; | |
388 | } | |
389 | ||
390 | if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { | |
391 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
392 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
393 | return SR_OK; | |
394 | } | |
395 | ||
396 | if (!sdi) | |
397 | return SR_ERR_ARG; | |
398 | ||
399 | if (!cg) { | |
400 | switch (key) { | |
401 | case SR_CONF_DEVICE_OPTIONS: | |
402 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
403 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
404 | break; | |
405 | case SR_CONF_SAMPLERATE: | |
406 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
407 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
408 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
409 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
410 | *data = g_variant_builder_end(&gvb); | |
411 | break; | |
412 | default: | |
413 | return SR_ERR_NA; | |
414 | } | |
415 | } else { | |
416 | ch = cg->channels->data; | |
417 | switch (key) { | |
418 | case SR_CONF_DEVICE_OPTIONS: | |
419 | if (ch->type == SR_CHANNEL_LOGIC) | |
420 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
421 | devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic), | |
422 | sizeof(uint32_t)); | |
423 | else if (ch->type == SR_CHANNEL_ANALOG) { | |
424 | if (strcmp(cg->name, "Analog") == 0) | |
425 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
426 | devopts_cg_analog_group, ARRAY_SIZE(devopts_cg_analog_group), | |
427 | sizeof(uint32_t)); | |
428 | else | |
429 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
430 | devopts_cg_analog_channel, ARRAY_SIZE(devopts_cg_analog_channel), | |
431 | sizeof(uint32_t)); | |
432 | } | |
433 | else | |
434 | return SR_ERR_BUG; | |
435 | break; | |
436 | case SR_CONF_PATTERN_MODE: | |
437 | /* The analog group (with all 4 channels) shall not have a pattern property. */ | |
438 | if (strcmp(cg->name, "Analog") == 0) | |
439 | return SR_ERR_NA; | |
440 | ||
441 | if (ch->type == SR_CHANNEL_LOGIC) | |
442 | *data = g_variant_new_strv(logic_pattern_str, | |
443 | ARRAY_SIZE(logic_pattern_str)); | |
444 | else if (ch->type == SR_CHANNEL_ANALOG) | |
445 | *data = g_variant_new_strv(analog_pattern_str, | |
446 | ARRAY_SIZE(analog_pattern_str)); | |
447 | else | |
448 | return SR_ERR_BUG; | |
449 | break; | |
450 | default: | |
451 | return SR_ERR_NA; | |
452 | } | |
453 | } | |
454 | ||
455 | return SR_OK; | |
456 | } | |
457 | ||
458 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
459 | { | |
460 | struct dev_context *devc; | |
461 | GHashTableIter iter; | |
462 | void *value; | |
463 | ||
464 | if (sdi->status != SR_ST_ACTIVE) | |
465 | return SR_ERR_DEV_CLOSED; | |
466 | ||
467 | devc = sdi->priv; | |
468 | devc->sent_samples = 0; | |
469 | ||
470 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
471 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
472 | demo_generate_analog_pattern(value, devc->cur_samplerate); | |
473 | ||
474 | sr_session_source_add(sdi->session, -1, 0, 100, | |
475 | demo_prepare_data, (struct sr_dev_inst *)sdi); | |
476 | ||
477 | std_session_send_df_header(sdi); | |
478 | ||
479 | /* We use this timestamp to decide how many more samples to send. */ | |
480 | devc->start_us = g_get_monotonic_time(); | |
481 | devc->spent_us = 0; | |
482 | devc->step = 0; | |
483 | ||
484 | return SR_OK; | |
485 | } | |
486 | ||
487 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
488 | { | |
489 | sr_dbg("Stopping acquisition."); | |
490 | sr_session_source_remove(sdi->session, -1); | |
491 | std_session_send_df_end(sdi); | |
492 | ||
493 | return SR_OK; | |
494 | } | |
495 | ||
496 | static struct sr_dev_driver demo_driver_info = { | |
497 | .name = "demo", | |
498 | .longname = "Demo driver and pattern generator", | |
499 | .api_version = 1, | |
500 | .init = std_init, | |
501 | .cleanup = std_cleanup, | |
502 | .scan = scan, | |
503 | .dev_list = std_dev_list, | |
504 | .dev_clear = dev_clear, | |
505 | .config_get = config_get, | |
506 | .config_set = config_set, | |
507 | .config_list = config_list, | |
508 | .dev_open = dev_open, | |
509 | .dev_close = dev_close, | |
510 | .dev_acquisition_start = dev_acquisition_start, | |
511 | .dev_acquisition_stop = dev_acquisition_stop, | |
512 | .context = NULL, | |
513 | }; | |
514 | SR_REGISTER_DEV_DRIVER(demo_driver_info); |