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6239c175 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
6239c175 UH |
3 | * |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
fc96e6f8 | 5 | * Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com> |
c216d623 | 6 | * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com> |
6239c175 UH |
7 | * |
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. | |
12 | * | |
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. | |
17 | * | |
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 | |
21 | */ | |
22 | ||
23 | #include <stdlib.h> | |
85b5af06 | 24 | #include <unistd.h> |
6239c175 | 25 | #include <string.h> |
d35aaf02 UH |
26 | #ifdef _WIN32 |
27 | #include <io.h> | |
28 | #include <fcntl.h> | |
29 | #define pipe(fds) _pipe(fds, 4096, _O_BINARY) | |
30 | #endif | |
45c59c8b BV |
31 | #include "libsigrok.h" |
32 | #include "libsigrok-internal.h" | |
6239c175 | 33 | |
3544f848 | 34 | #define LOG_PREFIX "demo" |
92bcedf6 | 35 | |
c07f60e7 BV |
36 | #define DEFAULT_NUM_LOGIC_PROBES 8 |
37 | #define DEFAULT_NUM_ANALOG_PROBES 4 | |
c03ed397 | 38 | |
8b2d41ed | 39 | /* The size in bytes of chunks to send through the session bus. */ |
61c39f54 | 40 | #define LOGIC_BUFSIZE 4096 |
8b2d41ed BV |
41 | /* Size of the analog pattern space per channel. */ |
42 | #define ANALOG_BUFSIZE 4096 | |
2474d87e | 43 | |
2388ae86 | 44 | /* Logic patterns we can generate. */ |
e15f48c2 | 45 | enum { |
0d31276b | 46 | /** |
61c39f54 BV |
47 | * Spells "sigrok" across 8 probes using '0's (with '1's as |
48 | * "background") when displayed using the 'bits' output format. | |
c07f60e7 BV |
49 | * The pattern is repeasted every 8 probes, shifted to the right |
50 | * in time by one bit. | |
0d31276b | 51 | */ |
c8f4624d | 52 | PATTERN_SIGROK, |
0d31276b | 53 | |
c07f60e7 | 54 | /** Pseudo-random values on all probes. */ |
c8f4624d | 55 | PATTERN_RANDOM, |
0d31276b UH |
56 | |
57 | /** | |
c07f60e7 BV |
58 | * Incrementing number across 8 probes. The pattern is repeasted |
59 | * every 8 probes, shifted to the right in time by one bit. | |
0d31276b | 60 | */ |
c8f4624d | 61 | PATTERN_INC, |
c03ed397 | 62 | |
61c39f54 | 63 | /** All probes have a low logic state. */ |
c03ed397 UH |
64 | PATTERN_ALL_LOW, |
65 | ||
61c39f54 | 66 | /** All probes have a high logic state. */ |
c03ed397 | 67 | PATTERN_ALL_HIGH, |
2388ae86 | 68 | }; |
8b2d41ed | 69 | |
2388ae86 BV |
70 | /* Analog patterns we can generate. */ |
71 | enum { | |
8b2d41ed BV |
72 | /** |
73 | * Square wave. | |
74 | */ | |
75 | PATTERN_SQUARE, | |
e15f48c2 | 76 | }; |
85b5af06 | 77 | |
8b2d41ed | 78 | static const char *logic_pattern_str[] = { |
61c39f54 BV |
79 | "sigrok", |
80 | "random", | |
81 | "incremental", | |
82 | "all-low", | |
83 | "all-high", | |
84 | }; | |
85 | ||
8b2d41ed BV |
86 | static const char *analog_pattern_str[] = { |
87 | "square", | |
88 | }; | |
89 | ||
90 | struct analog_gen { | |
91 | int pattern; | |
92 | float pattern_data[ANALOG_BUFSIZE]; | |
93 | unsigned int num_samples; | |
94 | struct sr_datafeed_analog packet; | |
95 | }; | |
96 | ||
b4750a3a BV |
97 | /* Private, per-device-instance driver context. */ |
98 | struct dev_context { | |
e15f48c2 | 99 | int pipe_fds[2]; |
e0532047 | 100 | GIOChannel *channel; |
a7684294 JH |
101 | uint64_t cur_samplerate; |
102 | uint64_t limit_samples; | |
103 | uint64_t limit_msec; | |
e15f48c2 | 104 | uint64_t samples_counter; |
3b203673 | 105 | int64_t starttime; |
61c39f54 | 106 | uint64_t step; |
8b2d41ed | 107 | /* Logic */ |
c07f60e7 BV |
108 | int32_t num_logic_probes; |
109 | unsigned int logic_unitsize; | |
2388ae86 | 110 | /* There is only ever one logic probe group, so its pattern goes here. */ |
c07f60e7 BV |
111 | uint8_t logic_pattern; |
112 | unsigned char logic_data[LOGIC_BUFSIZE]; | |
8b2d41ed | 113 | /* Analog */ |
c07f60e7 | 114 | int32_t num_analog_probes; |
8b2d41ed | 115 | GSList *analog_probe_groups; |
c07f60e7 BV |
116 | }; |
117 | ||
7a1da331 | 118 | static const int32_t scanopts[] = { |
c07f60e7 BV |
119 | SR_CONF_NUM_LOGIC_PROBES, |
120 | SR_CONF_NUM_ANALOG_PROBES, | |
e15f48c2 | 121 | }; |
85b5af06 | 122 | |
7a1da331 | 123 | static const int devopts[] = { |
1953564a BV |
124 | SR_CONF_LOGIC_ANALYZER, |
125 | SR_CONF_DEMO_DEV, | |
126 | SR_CONF_SAMPLERATE, | |
1953564a BV |
127 | SR_CONF_LIMIT_SAMPLES, |
128 | SR_CONF_LIMIT_MSEC, | |
6239c175 UH |
129 | }; |
130 | ||
7a1da331 BV |
131 | static const int devopts_pg[] = { |
132 | SR_CONF_PATTERN_MODE, | |
133 | }; | |
134 | ||
d00088ca BV |
135 | static const uint64_t samplerates[] = { |
136 | SR_HZ(1), | |
137 | SR_GHZ(1), | |
138 | SR_HZ(1), | |
4bfbf9fc BV |
139 | }; |
140 | ||
c8f4624d | 141 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
142 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
143 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
144 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
145 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
146 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
147 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
148 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
149 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
150 | }; | |
151 | ||
dcf03d6d | 152 | SR_PRIV struct sr_dev_driver demo_driver_info; |
a873c594 | 153 | static struct sr_dev_driver *di = &demo_driver_info; |
6239c175 | 154 | |
6078d2c9 | 155 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 156 | |
c07f60e7 | 157 | |
3b412e3a | 158 | static int dev_clear(void) |
eebb6067 | 159 | { |
1c2d542d | 160 | return std_dev_clear(di, NULL); |
eebb6067 UH |
161 | } |
162 | ||
6078d2c9 | 163 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 164 | { |
f6beaac5 | 165 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
166 | } |
167 | ||
8b2d41ed BV |
168 | static void set_analog_pattern(const struct sr_probe_group *probe_group, int pattern) |
169 | { | |
170 | struct analog_gen *ag; | |
171 | float value; | |
172 | unsigned int num_samples, i; | |
173 | int last_end; | |
174 | ||
175 | ag = probe_group->priv; | |
176 | ag->pattern = pattern; | |
177 | ||
178 | switch (pattern) { | |
179 | case PATTERN_SQUARE: | |
180 | num_samples = ANALOG_BUFSIZE / sizeof(float); | |
181 | value = 5.0; | |
182 | last_end = 0; | |
183 | for (i = 0; i < num_samples; i++) { | |
184 | if (i % 5 == 0) | |
185 | value = -value; | |
186 | if (i % 10 == 0) | |
187 | last_end = i - 1; | |
188 | ag->pattern_data[i] = value; | |
189 | } | |
190 | ag->num_samples = last_end; | |
191 | break; | |
192 | } | |
193 | } | |
194 | ||
6078d2c9 | 195 | static GSList *scan(GSList *options) |
6239c175 | 196 | { |
b4750a3a | 197 | struct drv_context *drvc; |
33ef7573 | 198 | struct dev_context *devc; |
c07f60e7 BV |
199 | struct sr_dev_inst *sdi; |
200 | struct sr_probe *probe; | |
8b2d41ed | 201 | struct sr_probe_group *pg; |
c07f60e7 | 202 | struct sr_config *src; |
8b2d41ed | 203 | struct analog_gen *ag; |
c07f60e7 BV |
204 | GSList *devices, *l; |
205 | int num_logic_probes, num_analog_probes, i; | |
61c39f54 | 206 | char probe_name[16]; |
067d0716 | 207 | |
a873c594 | 208 | drvc = di->priv; |
4b97c74e | 209 | |
c07f60e7 BV |
210 | num_logic_probes = DEFAULT_NUM_LOGIC_PROBES; |
211 | num_analog_probes = DEFAULT_NUM_ANALOG_PROBES; | |
212 | for (l = options; l; l = l->next) { | |
213 | src = l->data; | |
214 | switch (src->key) { | |
215 | case SR_CONF_NUM_LOGIC_PROBES: | |
216 | num_logic_probes = g_variant_get_int32(src->data); | |
217 | break; | |
218 | case SR_CONF_NUM_ANALOG_PROBES: | |
219 | num_analog_probes = g_variant_get_int32(src->data); | |
220 | break; | |
221 | } | |
222 | } | |
85b5af06 | 223 | |
c07f60e7 | 224 | devices = NULL; |
61c39f54 | 225 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Demo device", NULL, NULL); |
c03ed397 | 226 | if (!sdi) { |
e45ad6e2 UH |
227 | sr_err("Device instance creation failed."); |
228 | return NULL; | |
c03ed397 | 229 | } |
a873c594 | 230 | sdi->driver = di; |
e15f48c2 | 231 | |
8b2d41ed BV |
232 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { |
233 | sr_err("Device context malloc failed."); | |
234 | return NULL; | |
235 | } | |
236 | devc->cur_samplerate = SR_KHZ(200); | |
237 | devc->limit_samples = 0; | |
238 | devc->limit_msec = 0; | |
239 | devc->step = 0; | |
240 | devc->num_logic_probes = num_logic_probes; | |
241 | devc->logic_unitsize = (devc->num_logic_probes + 7) / 8; | |
242 | devc->logic_pattern = PATTERN_SIGROK; | |
243 | devc->num_analog_probes = num_analog_probes; | |
244 | devc->analog_probe_groups = NULL; | |
245 | ||
246 | /* Logic probes, all in one probe group. */ | |
247 | if (!(pg = g_try_malloc(sizeof(struct sr_probe_group)))) | |
248 | return NULL; | |
249 | pg->name = g_strdup("Logic"); | |
250 | pg->probes = NULL; | |
251 | pg->priv = NULL; | |
c07f60e7 | 252 | for (i = 0; i < num_logic_probes; i++) { |
61c39f54 BV |
253 | sprintf(probe_name, "D%d", i); |
254 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, probe_name))) | |
87ca93c5 BV |
255 | return NULL; |
256 | sdi->probes = g_slist_append(sdi->probes, probe); | |
8b2d41ed | 257 | pg->probes = g_slist_append(pg->probes, probe); |
87ca93c5 | 258 | } |
8b2d41ed | 259 | sdi->probe_groups = g_slist_append(NULL, pg); |
87ca93c5 | 260 | |
8b2d41ed | 261 | /* Analog probes, probe groups and pattern generators. */ |
c07f60e7 BV |
262 | for (i = 0; i < num_analog_probes; i++) { |
263 | sprintf(probe_name, "A%d", i); | |
264 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, probe_name))) | |
265 | return NULL; | |
266 | sdi->probes = g_slist_append(sdi->probes, probe); | |
c07f60e7 | 267 | |
8b2d41ed BV |
268 | /* Every analog probe gets its own probe group. */ |
269 | if (!(pg = g_try_malloc(sizeof(struct sr_probe_group)))) | |
270 | return NULL; | |
271 | pg->name = g_strdup(probe_name); | |
272 | pg->probes = g_slist_append(NULL, probe); | |
85b5af06 | 273 | |
8b2d41ed BV |
274 | /* Every probe group gets a generator struct. */ |
275 | if (!(ag = g_try_malloc(sizeof(struct analog_gen)))) | |
276 | return NULL; | |
277 | ag->packet.probes = pg->probes; | |
278 | ag->packet.mq = 0; | |
279 | ag->packet.mqflags = 0; | |
280 | ag->packet.unit = SR_UNIT_VOLT; | |
281 | ag->packet.data = ag->pattern_data; | |
282 | pg->priv = ag; | |
283 | set_analog_pattern(pg, PATTERN_SQUARE); | |
284 | ||
285 | sdi->probe_groups = g_slist_append(sdi->probe_groups, pg); | |
286 | devc->analog_probe_groups = g_slist_append(devc->analog_probe_groups, pg); | |
33ef7573 | 287 | } |
33ef7573 JH |
288 | |
289 | sdi->priv = devc; | |
8b2d41ed BV |
290 | devices = g_slist_append(devices, sdi); |
291 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
33ef7573 | 292 | |
067d0716 | 293 | return devices; |
6239c175 UH |
294 | } |
295 | ||
6078d2c9 | 296 | static GSList *dev_list(void) |
811deee4 | 297 | { |
0e94d524 | 298 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
299 | } |
300 | ||
6078d2c9 | 301 | static int dev_open(struct sr_dev_inst *sdi) |
6239c175 | 302 | { |
e73ffd42 | 303 | sdi->status = SR_ST_ACTIVE; |
697785d1 | 304 | |
e46b8fb1 | 305 | return SR_OK; |
6239c175 UH |
306 | } |
307 | ||
6078d2c9 | 308 | static int dev_close(struct sr_dev_inst *sdi) |
6239c175 | 309 | { |
decfe89d | 310 | sdi->status = SR_ST_INACTIVE; |
697785d1 UH |
311 | |
312 | return SR_OK; | |
6239c175 UH |
313 | } |
314 | ||
6078d2c9 | 315 | static int cleanup(void) |
6239c175 | 316 | { |
1c2d542d | 317 | return dev_clear(); |
6239c175 UH |
318 | } |
319 | ||
8f996b89 ML |
320 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
321 | const struct sr_probe_group *probe_group) | |
6239c175 | 322 | { |
c07f60e7 | 323 | struct dev_context *devc; |
2388ae86 BV |
324 | struct sr_probe *probe; |
325 | struct analog_gen *ag; | |
326 | int pattern; | |
6f57fd96 | 327 | |
2388ae86 BV |
328 | if (!sdi) |
329 | return SR_ERR_ARG; | |
8f996b89 | 330 | |
c07f60e7 | 331 | devc = sdi->priv; |
035a1078 | 332 | switch (id) { |
123e1313 | 333 | case SR_CONF_SAMPLERATE: |
a7684294 | 334 | *data = g_variant_new_uint64(devc->cur_samplerate); |
6239c175 | 335 | break; |
2474d87e | 336 | case SR_CONF_LIMIT_SAMPLES: |
a7684294 | 337 | *data = g_variant_new_uint64(devc->limit_samples); |
2474d87e BV |
338 | break; |
339 | case SR_CONF_LIMIT_MSEC: | |
a7684294 | 340 | *data = g_variant_new_uint64(devc->limit_msec); |
2474d87e BV |
341 | break; |
342 | case SR_CONF_PATTERN_MODE: | |
2388ae86 BV |
343 | if (!probe_group) |
344 | return SR_ERR_PROBE_GROUP; | |
345 | probe = probe_group->probes->data; | |
346 | if (probe->type == SR_PROBE_LOGIC) { | |
347 | pattern = devc->logic_pattern; | |
348 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
349 | } else if (probe->type == SR_PROBE_ANALOG) { | |
350 | ag = probe_group->priv; | |
351 | pattern = ag->pattern; | |
352 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
353 | } else | |
354 | return SR_ERR_BUG; | |
c07f60e7 BV |
355 | break; |
356 | case SR_CONF_NUM_LOGIC_PROBES: | |
357 | *data = g_variant_new_int32(devc->num_logic_probes); | |
358 | break; | |
359 | case SR_CONF_NUM_ANALOG_PROBES: | |
360 | *data = g_variant_new_int32(devc->num_analog_probes); | |
2474d87e | 361 | break; |
7dfcf010 | 362 | default: |
bd6fbf62 | 363 | return SR_ERR_NA; |
6239c175 UH |
364 | } |
365 | ||
dfb0fa1a | 366 | return SR_OK; |
6239c175 UH |
367 | } |
368 | ||
8f996b89 ML |
369 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
370 | const struct sr_probe_group *probe_group) | |
6239c175 | 371 | { |
8b2d41ed | 372 | struct dev_context *devc; |
2388ae86 BV |
373 | struct sr_probe *probe; |
374 | int pattern, ret; | |
61c39f54 | 375 | unsigned int i; |
1b79df2f | 376 | const char *stropt; |
6239c175 | 377 | |
8b2d41ed | 378 | devc = sdi->priv; |
6239c175 | 379 | |
e73ffd42 BV |
380 | if (sdi->status != SR_ST_ACTIVE) |
381 | return SR_ERR_DEV_CLOSED; | |
382 | ||
2388ae86 BV |
383 | ret = SR_OK; |
384 | switch (id) { | |
385 | case SR_CONF_SAMPLERATE: | |
a7684294 | 386 | devc->cur_samplerate = g_variant_get_uint64(data); |
61c39f54 | 387 | sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); |
2388ae86 BV |
388 | break; |
389 | case SR_CONF_LIMIT_SAMPLES: | |
a7684294 JH |
390 | devc->limit_msec = 0; |
391 | devc->limit_samples = g_variant_get_uint64(data); | |
8b2d41ed | 392 | sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); |
2388ae86 BV |
393 | break; |
394 | case SR_CONF_LIMIT_MSEC: | |
a7684294 JH |
395 | devc->limit_msec = g_variant_get_uint64(data); |
396 | devc->limit_samples = 0; | |
8b2d41ed | 397 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); |
2388ae86 BV |
398 | break; |
399 | case SR_CONF_PATTERN_MODE: | |
400 | if (!probe_group) | |
401 | return SR_ERR_PROBE_GROUP; | |
d00088ca | 402 | stropt = g_variant_get_string(data, NULL); |
2388ae86 BV |
403 | probe = probe_group->probes->data; |
404 | pattern = -1; | |
405 | if (probe->type == SR_PROBE_LOGIC) { | |
406 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { | |
407 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
408 | pattern = i; | |
8b2d41ed BV |
409 | break; |
410 | } | |
411 | } | |
2388ae86 BV |
412 | if (pattern == -1) |
413 | return SR_ERR_ARG; | |
414 | devc->logic_pattern = pattern; | |
415 | ||
416 | /* Might as well do this now, these are static. */ | |
417 | if (pattern == PATTERN_ALL_LOW) | |
8b2d41ed | 418 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); |
2388ae86 | 419 | else if (pattern == PATTERN_ALL_HIGH) |
8b2d41ed | 420 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); |
2388ae86 BV |
421 | sr_dbg("Setting logic pattern to %s", |
422 | logic_pattern_str[pattern]); | |
423 | } else if (probe->type == SR_PROBE_ANALOG) { | |
424 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { | |
425 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
426 | pattern = i; | |
427 | break; | |
8b2d41ed | 428 | } |
8b2d41ed | 429 | } |
2388ae86 BV |
430 | if (pattern == -1) |
431 | return SR_ERR_ARG; | |
432 | sr_dbg("Setting analog pattern to %s", | |
433 | analog_pattern_str[pattern]); | |
434 | set_analog_pattern(probe_group, pattern); | |
435 | } else | |
436 | return SR_ERR_BUG; | |
437 | break; | |
438 | default: | |
bd6fbf62 | 439 | ret = SR_ERR_NA; |
6239c175 UH |
440 | } |
441 | ||
442 | return ret; | |
443 | } | |
444 | ||
8f996b89 ML |
445 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
446 | const struct sr_probe_group *probe_group) | |
a1c743fc | 447 | { |
7a1da331 | 448 | struct sr_probe *probe; |
d00088ca BV |
449 | GVariant *gvar; |
450 | GVariantBuilder gvb; | |
a1c743fc BV |
451 | |
452 | (void)sdi; | |
453 | ||
7a1da331 | 454 | if (key == SR_CONF_SCAN_OPTIONS) { |
c07f60e7 | 455 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
7a1da331 BV |
456 | scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); |
457 | return SR_OK; | |
458 | } | |
459 | ||
460 | if (!sdi) | |
461 | return SR_ERR_ARG; | |
462 | ||
463 | if (!probe_group) { | |
464 | switch (key) { | |
465 | case SR_CONF_DEVICE_OPTIONS: | |
466 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
467 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
468 | break; | |
469 | case SR_CONF_SAMPLERATE: | |
470 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
471 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
472 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
473 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
474 | *data = g_variant_builder_end(&gvb); | |
475 | break; | |
476 | default: | |
477 | return SR_ERR_NA; | |
478 | } | |
479 | } else { | |
480 | probe = probe_group->probes->data; | |
481 | switch (key) { | |
482 | case SR_CONF_DEVICE_OPTIONS: | |
483 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
484 | devopts_pg, ARRAY_SIZE(devopts_pg), sizeof(int32_t)); | |
485 | break; | |
486 | case SR_CONF_PATTERN_MODE: | |
487 | if (probe->type == SR_PROBE_LOGIC) | |
488 | *data = g_variant_new_strv(logic_pattern_str, | |
489 | ARRAY_SIZE(logic_pattern_str)); | |
2388ae86 | 490 | else if (probe->type == SR_PROBE_ANALOG) |
7a1da331 BV |
491 | *data = g_variant_new_strv(analog_pattern_str, |
492 | ARRAY_SIZE(analog_pattern_str)); | |
2388ae86 BV |
493 | else |
494 | return SR_ERR_BUG; | |
7a1da331 BV |
495 | break; |
496 | default: | |
497 | return SR_ERR_NA; | |
498 | } | |
a1c743fc BV |
499 | } |
500 | ||
501 | return SR_OK; | |
502 | } | |
503 | ||
c07f60e7 | 504 | static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) |
85b5af06 | 505 | { |
61c39f54 | 506 | struct dev_context *devc; |
c07f60e7 BV |
507 | uint64_t i, j; |
508 | uint8_t pat; | |
85b5af06 | 509 | |
61c39f54 | 510 | devc = sdi->priv; |
85b5af06 | 511 | |
c07f60e7 | 512 | switch (devc->logic_pattern) { |
61c39f54 | 513 | case PATTERN_SIGROK: |
c07f60e7 BV |
514 | memset(devc->logic_data, 0x00, size); |
515 | for (i = 0; i < size; i += devc->logic_unitsize) { | |
516 | for (j = 0; j < devc->logic_unitsize; j++) { | |
517 | pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; | |
518 | devc->logic_data[i + j] = ~pat; | |
519 | } | |
520 | devc->step++; | |
917e0e71 BV |
521 | } |
522 | break; | |
61c39f54 | 523 | case PATTERN_RANDOM: |
5096c6a6 | 524 | for (i = 0; i < size; i++) |
61c39f54 | 525 | devc->logic_data[i] = (uint8_t)(rand() & 0xff); |
85b5af06 | 526 | break; |
61c39f54 | 527 | case PATTERN_INC: |
c07f60e7 BV |
528 | for (i = 0; i < size; i++) { |
529 | for (j = 0; j < devc->logic_unitsize; j++) { | |
530 | devc->logic_data[i + j] = devc->step; | |
531 | } | |
532 | devc->step++; | |
533 | } | |
c03ed397 | 534 | break; |
61c39f54 BV |
535 | case PATTERN_ALL_LOW: |
536 | case PATTERN_ALL_HIGH: | |
537 | /* These were set when the pattern mode was selected. */ | |
c03ed397 UH |
538 | break; |
539 | default: | |
c07f60e7 | 540 | sr_err("Unknown pattern: %d.", devc->logic_pattern); |
c03ed397 | 541 | break; |
85b5af06 UH |
542 | } |
543 | } | |
544 | ||
85b5af06 | 545 | /* Callback handling data */ |
61c39f54 | 546 | static int prepare_data(int fd, int revents, void *cb_data) |
85b5af06 | 547 | { |
61c39f54 BV |
548 | struct sr_dev_inst *sdi; |
549 | struct dev_context *devc; | |
b9c735a2 | 550 | struct sr_datafeed_packet packet; |
9c939c51 | 551 | struct sr_datafeed_logic logic; |
8b2d41ed BV |
552 | struct sr_probe_group *pg; |
553 | struct analog_gen *ag; | |
554 | GSList *l; | |
555 | uint64_t samples_to_send, expected_samplenum, analog_samples, sending_now; | |
3b203673 | 556 | int64_t time, elapsed; |
1924f59f | 557 | |
cb93f8a9 UH |
558 | (void)fd; |
559 | (void)revents; | |
1924f59f | 560 | |
61c39f54 BV |
561 | sdi = cb_data; |
562 | devc = sdi->priv; | |
563 | ||
3b203673 AG |
564 | /* How many "virtual" samples should we have collected by now? */ |
565 | time = g_get_monotonic_time(); | |
566 | elapsed = time - devc->starttime; | |
a7684294 | 567 | expected_samplenum = elapsed * devc->cur_samplerate / 1000000; |
3b203673 AG |
568 | /* Of those, how many do we still have to send? */ |
569 | samples_to_send = expected_samplenum - devc->samples_counter; | |
570 | ||
a7684294 | 571 | if (devc->limit_samples) { |
3b203673 | 572 | samples_to_send = MIN(samples_to_send, |
c07f60e7 | 573 | devc->limit_samples - devc->samples_counter); |
3b203673 | 574 | } |
85b5af06 | 575 | |
3b203673 | 576 | while (samples_to_send > 0) { |
8b2d41ed | 577 | sending_now = 0; |
3b203673 | 578 | |
c07f60e7 | 579 | /* Logic */ |
8b2d41ed BV |
580 | if (devc->num_logic_probes > 0) { |
581 | sending_now = MIN(samples_to_send, | |
582 | LOGIC_BUFSIZE / devc->logic_unitsize); | |
583 | logic_generator(sdi, sending_now * devc->logic_unitsize); | |
584 | packet.type = SR_DF_LOGIC; | |
585 | packet.payload = &logic; | |
586 | logic.length = sending_now * devc->logic_unitsize; | |
587 | logic.unitsize = devc->logic_unitsize; | |
588 | logic.data = devc->logic_data; | |
589 | sr_session_send(sdi, &packet); | |
590 | } | |
591 | ||
592 | /* Analog, one probe at a time */ | |
593 | if (devc->num_analog_probes > 0) { | |
594 | sending_now = 0; | |
595 | for (l = devc->analog_probe_groups; l; l = l->next) { | |
596 | pg = l->data; | |
597 | ag = pg->priv; | |
598 | packet.type = SR_DF_ANALOG; | |
599 | packet.payload = &ag->packet; | |
600 | analog_samples = MIN(samples_to_send, ag->num_samples); | |
601 | /* Whichever probe group gets there first. */ | |
602 | sending_now = MAX(sending_now, analog_samples); | |
603 | ag->packet.num_samples = analog_samples; | |
604 | sr_session_send(sdi, &packet); | |
605 | } | |
606 | } | |
607 | ||
608 | samples_to_send -= sending_now; | |
3b203673 AG |
609 | devc->samples_counter += sending_now; |
610 | } | |
611 | ||
a7684294 JH |
612 | if (devc->limit_samples && |
613 | devc->samples_counter >= devc->limit_samples) { | |
35e199da | 614 | sr_info("Requested number of samples reached."); |
61c39f54 | 615 | dev_acquisition_stop(sdi, cb_data); |
c216d623 | 616 | return TRUE; |
85b5af06 | 617 | } |
1924f59f | 618 | |
85b5af06 UH |
619 | return TRUE; |
620 | } | |
621 | ||
6078d2c9 | 622 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 623 | { |
61c39f54 | 624 | struct dev_context *devc; |
85b5af06 | 625 | |
e73ffd42 BV |
626 | if (sdi->status != SR_ST_ACTIVE) |
627 | return SR_ERR_DEV_CLOSED; | |
628 | ||
8b2d41ed | 629 | /* TODO: don't start without a sample limit set */ |
61c39f54 | 630 | devc = sdi->priv; |
b4750a3a | 631 | devc->samples_counter = 0; |
85b5af06 | 632 | |
3b203673 AG |
633 | /* |
634 | * Setting two channels connected by a pipe is a remnant from when the | |
635 | * demo driver generated data in a thread, and collected and sent the | |
636 | * data in the main program loop. | |
637 | * They are kept here because it provides a convenient way of setting | |
638 | * up a timeout-based polling mechanism. | |
639 | */ | |
b4750a3a | 640 | if (pipe(devc->pipe_fds)) { |
92bcedf6 | 641 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 642 | return SR_ERR; |
c03ed397 | 643 | } |
85b5af06 | 644 | |
e0532047 | 645 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); |
d35aaf02 | 646 | |
e0532047 | 647 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 648 | |
d35aaf02 | 649 | /* Set channel encoding to binary (default is UTF-8). */ |
e0532047 | 650 | g_io_channel_set_encoding(devc->channel, NULL, NULL); |
d35aaf02 UH |
651 | |
652 | /* Make channels to unbuffered. */ | |
e0532047 | 653 | g_io_channel_set_buffered(devc->channel, FALSE); |
d35aaf02 | 654 | |
e0532047 | 655 | sr_session_source_add_channel(devc->channel, G_IO_IN | G_IO_ERR, |
61c39f54 | 656 | 40, prepare_data, (void *)sdi); |
85b5af06 | 657 | |
4afdfd46 | 658 | /* Send header packet to the session bus. */ |
29a27196 | 659 | std_session_send_df_header(cb_data, LOG_PREFIX); |
f366e86c | 660 | |
3b203673 AG |
661 | /* We use this timestamp to decide how many more samples to send. */ |
662 | devc->starttime = g_get_monotonic_time(); | |
663 | ||
e46b8fb1 | 664 | return SR_OK; |
6239c175 UH |
665 | } |
666 | ||
6078d2c9 | 667 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 668 | { |
8b2d41ed | 669 | struct dev_context *devc; |
c216d623 | 670 | struct sr_datafeed_packet packet; |
7fd3e859 | 671 | |
33ef7573 | 672 | (void)cb_data; |
7fd3e859 | 673 | |
8b2d41ed | 674 | devc = sdi->priv; |
49145a63 AG |
675 | sr_dbg("Stopping aquisition."); |
676 | ||
e0532047 JH |
677 | sr_session_source_remove_channel(devc->channel); |
678 | g_io_channel_shutdown(devc->channel, FALSE, NULL); | |
2150a69b JH |
679 | g_io_channel_unref(devc->channel); |
680 | devc->channel = NULL; | |
c216d623 AG |
681 | |
682 | /* Send last packet. */ | |
683 | packet.type = SR_DF_END; | |
c07f60e7 | 684 | sr_session_send(sdi, &packet); |
7fd3e859 | 685 | |
3010f21c | 686 | return SR_OK; |
6239c175 UH |
687 | } |
688 | ||
c09f0b57 | 689 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
690 | .name = "demo", |
691 | .longname = "Demo driver and pattern generator", | |
692 | .api_version = 1, | |
6078d2c9 UH |
693 | .init = init, |
694 | .cleanup = cleanup, | |
695 | .scan = scan, | |
696 | .dev_list = dev_list, | |
3b412e3a | 697 | .dev_clear = dev_clear, |
035a1078 BV |
698 | .config_get = config_get, |
699 | .config_set = config_set, | |
a1c743fc | 700 | .config_list = config_list, |
6078d2c9 UH |
701 | .dev_open = dev_open, |
702 | .dev_close = dev_close, | |
703 | .dev_acquisition_start = dev_acquisition_start, | |
704 | .dev_acquisition_stop = dev_acquisition_stop, | |
b4750a3a | 705 | .priv = NULL, |
6239c175 | 706 | }; |