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