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Commit | Line | Data |
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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> |
4374219b | 26 | #include <math.h> |
d35aaf02 UH |
27 | #ifdef _WIN32 |
28 | #include <io.h> | |
29 | #include <fcntl.h> | |
30 | #define pipe(fds) _pipe(fds, 4096, _O_BINARY) | |
31 | #endif | |
45c59c8b BV |
32 | #include "libsigrok.h" |
33 | #include "libsigrok-internal.h" | |
6239c175 | 34 | |
3544f848 | 35 | #define LOG_PREFIX "demo" |
92bcedf6 | 36 | |
c07f60e7 BV |
37 | #define DEFAULT_NUM_LOGIC_PROBES 8 |
38 | #define DEFAULT_NUM_ANALOG_PROBES 4 | |
c03ed397 | 39 | |
8b2d41ed | 40 | /* The size in bytes of chunks to send through the session bus. */ |
61c39f54 | 41 | #define LOGIC_BUFSIZE 4096 |
8b2d41ed BV |
42 | /* Size of the analog pattern space per channel. */ |
43 | #define ANALOG_BUFSIZE 4096 | |
2474d87e | 44 | |
4374219b DJ |
45 | #define ANALOG_AMPLITUDE 25 |
46 | #define ANALOG_SAMPLES_PER_PERIOD 20 | |
47 | ||
2388ae86 | 48 | /* Logic patterns we can generate. */ |
e15f48c2 | 49 | enum { |
0d31276b | 50 | /** |
61c39f54 BV |
51 | * Spells "sigrok" across 8 probes using '0's (with '1's as |
52 | * "background") when displayed using the 'bits' output format. | |
c07f60e7 BV |
53 | * The pattern is repeasted every 8 probes, shifted to the right |
54 | * in time by one bit. | |
0d31276b | 55 | */ |
c8f4624d | 56 | PATTERN_SIGROK, |
0d31276b | 57 | |
c07f60e7 | 58 | /** Pseudo-random values on all probes. */ |
c8f4624d | 59 | PATTERN_RANDOM, |
0d31276b UH |
60 | |
61 | /** | |
c07f60e7 BV |
62 | * Incrementing number across 8 probes. The pattern is repeasted |
63 | * every 8 probes, shifted to the right in time by one bit. | |
0d31276b | 64 | */ |
c8f4624d | 65 | PATTERN_INC, |
c03ed397 | 66 | |
61c39f54 | 67 | /** All probes have a low logic state. */ |
c03ed397 UH |
68 | PATTERN_ALL_LOW, |
69 | ||
61c39f54 | 70 | /** All probes have a high logic state. */ |
c03ed397 | 71 | PATTERN_ALL_HIGH, |
2388ae86 | 72 | }; |
8b2d41ed | 73 | |
2388ae86 BV |
74 | /* Analog patterns we can generate. */ |
75 | enum { | |
8b2d41ed BV |
76 | /** |
77 | * Square wave. | |
78 | */ | |
79 | PATTERN_SQUARE, | |
4374219b | 80 | PATTERN_SINE, |
091c9621 | 81 | PATTERN_TRIANGLE, |
9f54e0e8 | 82 | PATTERN_SAWTOOTH, |
e15f48c2 | 83 | }; |
85b5af06 | 84 | |
8b2d41ed | 85 | static const char *logic_pattern_str[] = { |
61c39f54 BV |
86 | "sigrok", |
87 | "random", | |
88 | "incremental", | |
89 | "all-low", | |
90 | "all-high", | |
91 | }; | |
92 | ||
8b2d41ed BV |
93 | static const char *analog_pattern_str[] = { |
94 | "square", | |
4374219b | 95 | "sine", |
091c9621 | 96 | "triangle", |
9f54e0e8 | 97 | "sawtooth", |
8b2d41ed BV |
98 | }; |
99 | ||
100 | struct analog_gen { | |
101 | int pattern; | |
102 | float pattern_data[ANALOG_BUFSIZE]; | |
103 | unsigned int num_samples; | |
104 | struct sr_datafeed_analog packet; | |
105 | }; | |
106 | ||
b4750a3a BV |
107 | /* Private, per-device-instance driver context. */ |
108 | struct dev_context { | |
e15f48c2 | 109 | int pipe_fds[2]; |
e0532047 | 110 | GIOChannel *channel; |
a7684294 JH |
111 | uint64_t cur_samplerate; |
112 | uint64_t limit_samples; | |
113 | uint64_t limit_msec; | |
7f4975b4 BV |
114 | uint64_t logic_counter; |
115 | uint64_t analog_counter; | |
3b203673 | 116 | int64_t starttime; |
61c39f54 | 117 | uint64_t step; |
8b2d41ed | 118 | /* Logic */ |
c07f60e7 BV |
119 | int32_t num_logic_probes; |
120 | unsigned int logic_unitsize; | |
2388ae86 | 121 | /* There is only ever one logic probe group, so its pattern goes here. */ |
c07f60e7 BV |
122 | uint8_t logic_pattern; |
123 | unsigned char logic_data[LOGIC_BUFSIZE]; | |
8b2d41ed | 124 | /* Analog */ |
c07f60e7 | 125 | int32_t num_analog_probes; |
8b2d41ed | 126 | GSList *analog_probe_groups; |
c07f60e7 BV |
127 | }; |
128 | ||
7a1da331 | 129 | static const int32_t scanopts[] = { |
c07f60e7 BV |
130 | SR_CONF_NUM_LOGIC_PROBES, |
131 | SR_CONF_NUM_ANALOG_PROBES, | |
e15f48c2 | 132 | }; |
85b5af06 | 133 | |
7a1da331 | 134 | static const int devopts[] = { |
1953564a BV |
135 | SR_CONF_LOGIC_ANALYZER, |
136 | SR_CONF_DEMO_DEV, | |
137 | SR_CONF_SAMPLERATE, | |
1953564a BV |
138 | SR_CONF_LIMIT_SAMPLES, |
139 | SR_CONF_LIMIT_MSEC, | |
6239c175 UH |
140 | }; |
141 | ||
7a1da331 BV |
142 | static const int devopts_pg[] = { |
143 | SR_CONF_PATTERN_MODE, | |
144 | }; | |
145 | ||
d00088ca BV |
146 | static const uint64_t samplerates[] = { |
147 | SR_HZ(1), | |
148 | SR_GHZ(1), | |
149 | SR_HZ(1), | |
4bfbf9fc BV |
150 | }; |
151 | ||
c8f4624d | 152 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
153 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
154 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
155 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
156 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
157 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
158 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
159 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
160 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
161 | }; | |
162 | ||
dcf03d6d | 163 | SR_PRIV struct sr_dev_driver demo_driver_info; |
a873c594 | 164 | static struct sr_dev_driver *di = &demo_driver_info; |
6239c175 | 165 | |
6078d2c9 | 166 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 167 | |
c07f60e7 | 168 | |
3b412e3a | 169 | static int dev_clear(void) |
eebb6067 | 170 | { |
1c2d542d | 171 | return std_dev_clear(di, NULL); |
eebb6067 UH |
172 | } |
173 | ||
6078d2c9 | 174 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 175 | { |
f6beaac5 | 176 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
177 | } |
178 | ||
4374219b | 179 | static void generate_analog_pattern(const struct sr_probe_group *probe_group, uint64_t sample_rate) |
8b2d41ed BV |
180 | { |
181 | struct analog_gen *ag; | |
4374219b | 182 | double t, frequency; |
8b2d41ed BV |
183 | float value; |
184 | unsigned int num_samples, i; | |
185 | int last_end; | |
186 | ||
187 | ag = probe_group->priv; | |
4374219b DJ |
188 | num_samples = ANALOG_BUFSIZE / sizeof(float); |
189 | ||
190 | sr_dbg("Generating %s pattern for probe group %s", | |
191 | analog_pattern_str[ag->pattern], | |
192 | probe_group->name); | |
8b2d41ed | 193 | |
4374219b | 194 | switch (ag->pattern) { |
8b2d41ed | 195 | case PATTERN_SQUARE: |
2438b737 | 196 | value = ANALOG_AMPLITUDE; |
8b2d41ed BV |
197 | last_end = 0; |
198 | for (i = 0; i < num_samples; i++) { | |
199 | if (i % 5 == 0) | |
200 | value = -value; | |
201 | if (i % 10 == 0) | |
202 | last_end = i - 1; | |
203 | ag->pattern_data[i] = value; | |
204 | } | |
205 | ag->num_samples = last_end; | |
206 | break; | |
4374219b DJ |
207 | |
208 | case PATTERN_SINE: | |
209 | frequency = sample_rate / ANALOG_SAMPLES_PER_PERIOD; | |
210 | ||
211 | /* Make sure the number of samples we put out is an integer | |
212 | * multiple of our period size */ | |
213 | /* FIXME we actually need only one period. A ringbuffer would be | |
214 | * usefull here.*/ | |
215 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
216 | num_samples--; | |
217 | ||
218 | for (i = 0; i < num_samples; i++) { | |
219 | t = (double) i / (double) sample_rate; | |
220 | ag->pattern_data[i] = ANALOG_AMPLITUDE * | |
221 | sin(2 * M_PI * frequency * t); | |
222 | } | |
223 | ||
091c9621 DJ |
224 | ag->num_samples = num_samples; |
225 | break; | |
226 | ||
227 | case PATTERN_TRIANGLE: | |
228 | frequency = sample_rate / ANALOG_SAMPLES_PER_PERIOD; | |
229 | ||
230 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
231 | num_samples--; | |
232 | ||
233 | for (i = 0; i < num_samples; i++) { | |
234 | t = (double) i / (double) sample_rate; | |
235 | ag->pattern_data[i] = (2 * ANALOG_AMPLITUDE / M_PI) * | |
236 | asin(sin(2 * M_PI * frequency * t)); | |
237 | } | |
238 | ||
9f54e0e8 DJ |
239 | ag->num_samples = num_samples; |
240 | break; | |
241 | ||
242 | case PATTERN_SAWTOOTH: | |
243 | frequency = sample_rate / ANALOG_SAMPLES_PER_PERIOD; | |
244 | ||
245 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
246 | num_samples--; | |
247 | ||
248 | for (i = 0; i < num_samples; i++) { | |
249 | t = (double) i / (double) sample_rate; | |
250 | ag->pattern_data[i] = 2 * ANALOG_AMPLITUDE * | |
251 | ((t * frequency) - floor(0.5f + t * frequency)); | |
252 | } | |
253 | ||
4374219b DJ |
254 | ag->num_samples = num_samples; |
255 | break; | |
8b2d41ed BV |
256 | } |
257 | } | |
258 | ||
6078d2c9 | 259 | static GSList *scan(GSList *options) |
6239c175 | 260 | { |
b4750a3a | 261 | struct drv_context *drvc; |
33ef7573 | 262 | struct dev_context *devc; |
c07f60e7 BV |
263 | struct sr_dev_inst *sdi; |
264 | struct sr_probe *probe; | |
8b2d41ed | 265 | struct sr_probe_group *pg; |
c07f60e7 | 266 | struct sr_config *src; |
8b2d41ed | 267 | struct analog_gen *ag; |
c07f60e7 | 268 | GSList *devices, *l; |
2b36d6c6 | 269 | int num_logic_probes, num_analog_probes, pattern, i; |
61c39f54 | 270 | char probe_name[16]; |
067d0716 | 271 | |
a873c594 | 272 | drvc = di->priv; |
4b97c74e | 273 | |
c07f60e7 BV |
274 | num_logic_probes = DEFAULT_NUM_LOGIC_PROBES; |
275 | num_analog_probes = DEFAULT_NUM_ANALOG_PROBES; | |
276 | for (l = options; l; l = l->next) { | |
277 | src = l->data; | |
278 | switch (src->key) { | |
279 | case SR_CONF_NUM_LOGIC_PROBES: | |
280 | num_logic_probes = g_variant_get_int32(src->data); | |
281 | break; | |
282 | case SR_CONF_NUM_ANALOG_PROBES: | |
283 | num_analog_probes = g_variant_get_int32(src->data); | |
284 | break; | |
285 | } | |
286 | } | |
85b5af06 | 287 | |
c07f60e7 | 288 | devices = NULL; |
61c39f54 | 289 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Demo device", NULL, NULL); |
c03ed397 | 290 | if (!sdi) { |
e45ad6e2 UH |
291 | sr_err("Device instance creation failed."); |
292 | return NULL; | |
c03ed397 | 293 | } |
a873c594 | 294 | sdi->driver = di; |
e15f48c2 | 295 | |
8b2d41ed BV |
296 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { |
297 | sr_err("Device context malloc failed."); | |
298 | return NULL; | |
299 | } | |
300 | devc->cur_samplerate = SR_KHZ(200); | |
301 | devc->limit_samples = 0; | |
302 | devc->limit_msec = 0; | |
303 | devc->step = 0; | |
304 | devc->num_logic_probes = num_logic_probes; | |
305 | devc->logic_unitsize = (devc->num_logic_probes + 7) / 8; | |
306 | devc->logic_pattern = PATTERN_SIGROK; | |
307 | devc->num_analog_probes = num_analog_probes; | |
308 | devc->analog_probe_groups = NULL; | |
309 | ||
310 | /* Logic probes, all in one probe group. */ | |
311 | if (!(pg = g_try_malloc(sizeof(struct sr_probe_group)))) | |
312 | return NULL; | |
313 | pg->name = g_strdup("Logic"); | |
314 | pg->probes = NULL; | |
315 | pg->priv = NULL; | |
c07f60e7 | 316 | for (i = 0; i < num_logic_probes; i++) { |
61c39f54 BV |
317 | sprintf(probe_name, "D%d", i); |
318 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, probe_name))) | |
87ca93c5 BV |
319 | return NULL; |
320 | sdi->probes = g_slist_append(sdi->probes, probe); | |
8b2d41ed | 321 | pg->probes = g_slist_append(pg->probes, probe); |
87ca93c5 | 322 | } |
8b2d41ed | 323 | sdi->probe_groups = g_slist_append(NULL, pg); |
87ca93c5 | 324 | |
8b2d41ed | 325 | /* Analog probes, probe groups and pattern generators. */ |
2b36d6c6 BV |
326 | |
327 | pattern = 0; | |
c07f60e7 BV |
328 | for (i = 0; i < num_analog_probes; i++) { |
329 | sprintf(probe_name, "A%d", i); | |
03aa381e BV |
330 | if (!(probe = sr_probe_new(i + num_logic_probes, |
331 | SR_PROBE_ANALOG, TRUE, probe_name))) | |
c07f60e7 BV |
332 | return NULL; |
333 | sdi->probes = g_slist_append(sdi->probes, probe); | |
c07f60e7 | 334 | |
8b2d41ed BV |
335 | /* Every analog probe gets its own probe group. */ |
336 | if (!(pg = g_try_malloc(sizeof(struct sr_probe_group)))) | |
337 | return NULL; | |
338 | pg->name = g_strdup(probe_name); | |
339 | pg->probes = g_slist_append(NULL, probe); | |
85b5af06 | 340 | |
8b2d41ed BV |
341 | /* Every probe group gets a generator struct. */ |
342 | if (!(ag = g_try_malloc(sizeof(struct analog_gen)))) | |
343 | return NULL; | |
344 | ag->packet.probes = pg->probes; | |
345 | ag->packet.mq = 0; | |
346 | ag->packet.mqflags = 0; | |
347 | ag->packet.unit = SR_UNIT_VOLT; | |
348 | ag->packet.data = ag->pattern_data; | |
2b36d6c6 | 349 | ag->pattern = pattern; |
8b2d41ed | 350 | pg->priv = ag; |
8b2d41ed BV |
351 | |
352 | sdi->probe_groups = g_slist_append(sdi->probe_groups, pg); | |
353 | devc->analog_probe_groups = g_slist_append(devc->analog_probe_groups, pg); | |
2b36d6c6 BV |
354 | |
355 | if (++pattern == ARRAY_SIZE(analog_pattern_str)) | |
356 | pattern = 0; | |
33ef7573 | 357 | } |
33ef7573 JH |
358 | |
359 | sdi->priv = devc; | |
8b2d41ed BV |
360 | devices = g_slist_append(devices, sdi); |
361 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
33ef7573 | 362 | |
067d0716 | 363 | return devices; |
6239c175 UH |
364 | } |
365 | ||
6078d2c9 | 366 | static GSList *dev_list(void) |
811deee4 | 367 | { |
0e94d524 | 368 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
369 | } |
370 | ||
6078d2c9 | 371 | static int dev_open(struct sr_dev_inst *sdi) |
6239c175 | 372 | { |
e73ffd42 | 373 | sdi->status = SR_ST_ACTIVE; |
697785d1 | 374 | |
e46b8fb1 | 375 | return SR_OK; |
6239c175 UH |
376 | } |
377 | ||
6078d2c9 | 378 | static int dev_close(struct sr_dev_inst *sdi) |
6239c175 | 379 | { |
decfe89d | 380 | sdi->status = SR_ST_INACTIVE; |
697785d1 UH |
381 | |
382 | return SR_OK; | |
6239c175 UH |
383 | } |
384 | ||
6078d2c9 | 385 | static int cleanup(void) |
6239c175 | 386 | { |
1c2d542d | 387 | return dev_clear(); |
6239c175 UH |
388 | } |
389 | ||
8f996b89 ML |
390 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
391 | const struct sr_probe_group *probe_group) | |
6239c175 | 392 | { |
c07f60e7 | 393 | struct dev_context *devc; |
2388ae86 BV |
394 | struct sr_probe *probe; |
395 | struct analog_gen *ag; | |
396 | int pattern; | |
6f57fd96 | 397 | |
2388ae86 BV |
398 | if (!sdi) |
399 | return SR_ERR_ARG; | |
8f996b89 | 400 | |
c07f60e7 | 401 | devc = sdi->priv; |
035a1078 | 402 | switch (id) { |
123e1313 | 403 | case SR_CONF_SAMPLERATE: |
a7684294 | 404 | *data = g_variant_new_uint64(devc->cur_samplerate); |
6239c175 | 405 | break; |
2474d87e | 406 | case SR_CONF_LIMIT_SAMPLES: |
a7684294 | 407 | *data = g_variant_new_uint64(devc->limit_samples); |
2474d87e BV |
408 | break; |
409 | case SR_CONF_LIMIT_MSEC: | |
a7684294 | 410 | *data = g_variant_new_uint64(devc->limit_msec); |
2474d87e BV |
411 | break; |
412 | case SR_CONF_PATTERN_MODE: | |
2388ae86 BV |
413 | if (!probe_group) |
414 | return SR_ERR_PROBE_GROUP; | |
415 | probe = probe_group->probes->data; | |
416 | if (probe->type == SR_PROBE_LOGIC) { | |
417 | pattern = devc->logic_pattern; | |
418 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
419 | } else if (probe->type == SR_PROBE_ANALOG) { | |
420 | ag = probe_group->priv; | |
421 | pattern = ag->pattern; | |
422 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
423 | } else | |
424 | return SR_ERR_BUG; | |
c07f60e7 BV |
425 | break; |
426 | case SR_CONF_NUM_LOGIC_PROBES: | |
427 | *data = g_variant_new_int32(devc->num_logic_probes); | |
428 | break; | |
429 | case SR_CONF_NUM_ANALOG_PROBES: | |
430 | *data = g_variant_new_int32(devc->num_analog_probes); | |
2474d87e | 431 | break; |
7dfcf010 | 432 | default: |
bd6fbf62 | 433 | return SR_ERR_NA; |
6239c175 UH |
434 | } |
435 | ||
dfb0fa1a | 436 | return SR_OK; |
6239c175 UH |
437 | } |
438 | ||
8f996b89 ML |
439 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
440 | const struct sr_probe_group *probe_group) | |
6239c175 | 441 | { |
8b2d41ed | 442 | struct dev_context *devc; |
4374219b | 443 | struct analog_gen *ag; |
2388ae86 BV |
444 | struct sr_probe *probe; |
445 | int pattern, ret; | |
61c39f54 | 446 | unsigned int i; |
1b79df2f | 447 | const char *stropt; |
6239c175 | 448 | |
8b2d41ed | 449 | devc = sdi->priv; |
6239c175 | 450 | |
e73ffd42 BV |
451 | if (sdi->status != SR_ST_ACTIVE) |
452 | return SR_ERR_DEV_CLOSED; | |
453 | ||
2388ae86 BV |
454 | ret = SR_OK; |
455 | switch (id) { | |
456 | case SR_CONF_SAMPLERATE: | |
a7684294 | 457 | devc->cur_samplerate = g_variant_get_uint64(data); |
61c39f54 | 458 | sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); |
2388ae86 BV |
459 | break; |
460 | case SR_CONF_LIMIT_SAMPLES: | |
a7684294 JH |
461 | devc->limit_msec = 0; |
462 | devc->limit_samples = g_variant_get_uint64(data); | |
8b2d41ed | 463 | sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); |
2388ae86 BV |
464 | break; |
465 | case SR_CONF_LIMIT_MSEC: | |
a7684294 JH |
466 | devc->limit_msec = g_variant_get_uint64(data); |
467 | devc->limit_samples = 0; | |
8b2d41ed | 468 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); |
2388ae86 BV |
469 | break; |
470 | case SR_CONF_PATTERN_MODE: | |
471 | if (!probe_group) | |
472 | return SR_ERR_PROBE_GROUP; | |
d00088ca | 473 | stropt = g_variant_get_string(data, NULL); |
2388ae86 BV |
474 | probe = probe_group->probes->data; |
475 | pattern = -1; | |
476 | if (probe->type == SR_PROBE_LOGIC) { | |
477 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { | |
478 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
479 | pattern = i; | |
8b2d41ed BV |
480 | break; |
481 | } | |
482 | } | |
2388ae86 BV |
483 | if (pattern == -1) |
484 | return SR_ERR_ARG; | |
485 | devc->logic_pattern = pattern; | |
486 | ||
487 | /* Might as well do this now, these are static. */ | |
488 | if (pattern == PATTERN_ALL_LOW) | |
8b2d41ed | 489 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); |
2388ae86 | 490 | else if (pattern == PATTERN_ALL_HIGH) |
8b2d41ed | 491 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); |
2388ae86 BV |
492 | sr_dbg("Setting logic pattern to %s", |
493 | logic_pattern_str[pattern]); | |
494 | } else if (probe->type == SR_PROBE_ANALOG) { | |
495 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { | |
496 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
497 | pattern = i; | |
498 | break; | |
8b2d41ed | 499 | } |
8b2d41ed | 500 | } |
2388ae86 BV |
501 | if (pattern == -1) |
502 | return SR_ERR_ARG; | |
4374219b DJ |
503 | sr_dbg("Setting analog pattern for probe group %s to %s", |
504 | probe_group->name, | |
2388ae86 | 505 | analog_pattern_str[pattern]); |
4374219b DJ |
506 | ag = probe_group->priv; |
507 | ag->pattern = pattern; | |
2388ae86 BV |
508 | } else |
509 | return SR_ERR_BUG; | |
510 | break; | |
511 | default: | |
bd6fbf62 | 512 | ret = SR_ERR_NA; |
6239c175 UH |
513 | } |
514 | ||
515 | return ret; | |
516 | } | |
517 | ||
8f996b89 ML |
518 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
519 | const struct sr_probe_group *probe_group) | |
a1c743fc | 520 | { |
7a1da331 | 521 | struct sr_probe *probe; |
d00088ca BV |
522 | GVariant *gvar; |
523 | GVariantBuilder gvb; | |
a1c743fc BV |
524 | |
525 | (void)sdi; | |
526 | ||
7a1da331 | 527 | if (key == SR_CONF_SCAN_OPTIONS) { |
c07f60e7 | 528 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
7a1da331 BV |
529 | scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); |
530 | return SR_OK; | |
531 | } | |
532 | ||
533 | if (!sdi) | |
534 | return SR_ERR_ARG; | |
535 | ||
536 | if (!probe_group) { | |
537 | switch (key) { | |
538 | case SR_CONF_DEVICE_OPTIONS: | |
539 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
540 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
541 | break; | |
542 | case SR_CONF_SAMPLERATE: | |
543 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
544 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
545 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
546 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
547 | *data = g_variant_builder_end(&gvb); | |
548 | break; | |
549 | default: | |
550 | return SR_ERR_NA; | |
551 | } | |
552 | } else { | |
553 | probe = probe_group->probes->data; | |
554 | switch (key) { | |
555 | case SR_CONF_DEVICE_OPTIONS: | |
556 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
557 | devopts_pg, ARRAY_SIZE(devopts_pg), sizeof(int32_t)); | |
558 | break; | |
559 | case SR_CONF_PATTERN_MODE: | |
560 | if (probe->type == SR_PROBE_LOGIC) | |
561 | *data = g_variant_new_strv(logic_pattern_str, | |
562 | ARRAY_SIZE(logic_pattern_str)); | |
2388ae86 | 563 | else if (probe->type == SR_PROBE_ANALOG) |
7a1da331 BV |
564 | *data = g_variant_new_strv(analog_pattern_str, |
565 | ARRAY_SIZE(analog_pattern_str)); | |
2388ae86 BV |
566 | else |
567 | return SR_ERR_BUG; | |
7a1da331 BV |
568 | break; |
569 | default: | |
570 | return SR_ERR_NA; | |
571 | } | |
a1c743fc BV |
572 | } |
573 | ||
574 | return SR_OK; | |
575 | } | |
576 | ||
c07f60e7 | 577 | static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) |
85b5af06 | 578 | { |
61c39f54 | 579 | struct dev_context *devc; |
c07f60e7 BV |
580 | uint64_t i, j; |
581 | uint8_t pat; | |
85b5af06 | 582 | |
61c39f54 | 583 | devc = sdi->priv; |
85b5af06 | 584 | |
c07f60e7 | 585 | switch (devc->logic_pattern) { |
61c39f54 | 586 | case PATTERN_SIGROK: |
c07f60e7 BV |
587 | memset(devc->logic_data, 0x00, size); |
588 | for (i = 0; i < size; i += devc->logic_unitsize) { | |
589 | for (j = 0; j < devc->logic_unitsize; j++) { | |
590 | pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; | |
591 | devc->logic_data[i + j] = ~pat; | |
592 | } | |
593 | devc->step++; | |
917e0e71 BV |
594 | } |
595 | break; | |
61c39f54 | 596 | case PATTERN_RANDOM: |
5096c6a6 | 597 | for (i = 0; i < size; i++) |
61c39f54 | 598 | devc->logic_data[i] = (uint8_t)(rand() & 0xff); |
85b5af06 | 599 | break; |
61c39f54 | 600 | case PATTERN_INC: |
c07f60e7 BV |
601 | for (i = 0; i < size; i++) { |
602 | for (j = 0; j < devc->logic_unitsize; j++) { | |
603 | devc->logic_data[i + j] = devc->step; | |
604 | } | |
605 | devc->step++; | |
606 | } | |
c03ed397 | 607 | break; |
61c39f54 BV |
608 | case PATTERN_ALL_LOW: |
609 | case PATTERN_ALL_HIGH: | |
610 | /* These were set when the pattern mode was selected. */ | |
c03ed397 UH |
611 | break; |
612 | default: | |
c07f60e7 | 613 | sr_err("Unknown pattern: %d.", devc->logic_pattern); |
c03ed397 | 614 | break; |
85b5af06 UH |
615 | } |
616 | } | |
617 | ||
85b5af06 | 618 | /* Callback handling data */ |
61c39f54 | 619 | static int prepare_data(int fd, int revents, void *cb_data) |
85b5af06 | 620 | { |
61c39f54 BV |
621 | struct sr_dev_inst *sdi; |
622 | struct dev_context *devc; | |
b9c735a2 | 623 | struct sr_datafeed_packet packet; |
9c939c51 | 624 | struct sr_datafeed_logic logic; |
8b2d41ed BV |
625 | struct sr_probe_group *pg; |
626 | struct analog_gen *ag; | |
627 | GSList *l; | |
7f4975b4 | 628 | uint64_t logic_todo, analog_todo, expected_samplenum, analog_samples, sending_now; |
3b203673 | 629 | int64_t time, elapsed; |
1924f59f | 630 | |
cb93f8a9 UH |
631 | (void)fd; |
632 | (void)revents; | |
1924f59f | 633 | |
61c39f54 BV |
634 | sdi = cb_data; |
635 | devc = sdi->priv; | |
636 | ||
3b203673 AG |
637 | /* How many "virtual" samples should we have collected by now? */ |
638 | time = g_get_monotonic_time(); | |
639 | elapsed = time - devc->starttime; | |
a7684294 | 640 | expected_samplenum = elapsed * devc->cur_samplerate / 1000000; |
7f4975b4 | 641 | |
3b203673 | 642 | /* Of those, how many do we still have to send? */ |
7f4975b4 BV |
643 | logic_todo = expected_samplenum - devc->logic_counter; |
644 | analog_todo = expected_samplenum - devc->analog_counter; | |
3b203673 | 645 | |
a7684294 | 646 | if (devc->limit_samples) { |
7f4975b4 BV |
647 | logic_todo = MIN(logic_todo, devc->limit_samples - devc->logic_counter); |
648 | analog_todo = MIN(analog_todo, devc->limit_samples - devc->analog_counter); | |
3b203673 | 649 | } |
85b5af06 | 650 | |
7f4975b4 | 651 | while (logic_todo || analog_todo) { |
c07f60e7 | 652 | /* Logic */ |
7f4975b4 BV |
653 | if (devc->num_logic_probes > 0 && logic_todo > 0) { |
654 | sending_now = MIN(logic_todo, | |
8b2d41ed BV |
655 | LOGIC_BUFSIZE / devc->logic_unitsize); |
656 | logic_generator(sdi, sending_now * devc->logic_unitsize); | |
657 | packet.type = SR_DF_LOGIC; | |
658 | packet.payload = &logic; | |
659 | logic.length = sending_now * devc->logic_unitsize; | |
660 | logic.unitsize = devc->logic_unitsize; | |
661 | logic.data = devc->logic_data; | |
662 | sr_session_send(sdi, &packet); | |
7f4975b4 BV |
663 | logic_todo -= sending_now; |
664 | devc->logic_counter += sending_now; | |
8b2d41ed BV |
665 | } |
666 | ||
667 | /* Analog, one probe at a time */ | |
7f4975b4 | 668 | if (devc->num_analog_probes > 0 && analog_todo > 0) { |
8b2d41ed BV |
669 | sending_now = 0; |
670 | for (l = devc->analog_probe_groups; l; l = l->next) { | |
671 | pg = l->data; | |
672 | ag = pg->priv; | |
673 | packet.type = SR_DF_ANALOG; | |
674 | packet.payload = &ag->packet; | |
4374219b DJ |
675 | |
676 | /* FIXME we should make sure we output a whole | |
677 | * period of data before we send out again the | |
678 | * beginning of our buffer. A ring buffer would | |
679 | * help here as well */ | |
680 | ||
7f4975b4 | 681 | analog_samples = MIN(analog_todo, ag->num_samples); |
8b2d41ed BV |
682 | /* Whichever probe group gets there first. */ |
683 | sending_now = MAX(sending_now, analog_samples); | |
684 | ag->packet.num_samples = analog_samples; | |
685 | sr_session_send(sdi, &packet); | |
686 | } | |
7f4975b4 BV |
687 | analog_todo -= sending_now; |
688 | devc->analog_counter += sending_now; | |
8b2d41ed | 689 | } |
3b203673 AG |
690 | } |
691 | ||
a7684294 | 692 | if (devc->limit_samples && |
7f4975b4 BV |
693 | devc->logic_counter >= devc->limit_samples && |
694 | devc->analog_counter >= devc->limit_samples) { | |
695 | sr_dbg("Requested number of samples reached."); | |
61c39f54 | 696 | dev_acquisition_stop(sdi, cb_data); |
c216d623 | 697 | return TRUE; |
85b5af06 | 698 | } |
1924f59f | 699 | |
85b5af06 UH |
700 | return TRUE; |
701 | } | |
702 | ||
6078d2c9 | 703 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 704 | { |
4374219b | 705 | GSList *l; |
61c39f54 | 706 | struct dev_context *devc; |
85b5af06 | 707 | |
e73ffd42 BV |
708 | if (sdi->status != SR_ST_ACTIVE) |
709 | return SR_ERR_DEV_CLOSED; | |
710 | ||
8b2d41ed | 711 | /* TODO: don't start without a sample limit set */ |
61c39f54 | 712 | devc = sdi->priv; |
7f4975b4 | 713 | devc->logic_counter = devc->analog_counter = 0; |
85b5af06 | 714 | |
3b203673 AG |
715 | /* |
716 | * Setting two channels connected by a pipe is a remnant from when the | |
717 | * demo driver generated data in a thread, and collected and sent the | |
718 | * data in the main program loop. | |
719 | * They are kept here because it provides a convenient way of setting | |
720 | * up a timeout-based polling mechanism. | |
721 | */ | |
b4750a3a | 722 | if (pipe(devc->pipe_fds)) { |
92bcedf6 | 723 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 724 | return SR_ERR; |
c03ed397 | 725 | } |
85b5af06 | 726 | |
4374219b DJ |
727 | for (l = devc->analog_probe_groups; l; l = l->next) { |
728 | generate_analog_pattern(l->data, devc->cur_samplerate); | |
729 | } | |
730 | ||
e0532047 | 731 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); |
d35aaf02 | 732 | |
e0532047 | 733 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 734 | |
d35aaf02 | 735 | /* Set channel encoding to binary (default is UTF-8). */ |
e0532047 | 736 | g_io_channel_set_encoding(devc->channel, NULL, NULL); |
d35aaf02 UH |
737 | |
738 | /* Make channels to unbuffered. */ | |
e0532047 | 739 | g_io_channel_set_buffered(devc->channel, FALSE); |
d35aaf02 | 740 | |
e0532047 | 741 | sr_session_source_add_channel(devc->channel, G_IO_IN | G_IO_ERR, |
61c39f54 | 742 | 40, prepare_data, (void *)sdi); |
85b5af06 | 743 | |
4afdfd46 | 744 | /* Send header packet to the session bus. */ |
29a27196 | 745 | std_session_send_df_header(cb_data, LOG_PREFIX); |
f366e86c | 746 | |
3b203673 AG |
747 | /* We use this timestamp to decide how many more samples to send. */ |
748 | devc->starttime = g_get_monotonic_time(); | |
749 | ||
e46b8fb1 | 750 | return SR_OK; |
6239c175 UH |
751 | } |
752 | ||
6078d2c9 | 753 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 754 | { |
8b2d41ed | 755 | struct dev_context *devc; |
c216d623 | 756 | struct sr_datafeed_packet packet; |
7fd3e859 | 757 | |
33ef7573 | 758 | (void)cb_data; |
7fd3e859 | 759 | |
8b2d41ed | 760 | devc = sdi->priv; |
49145a63 AG |
761 | sr_dbg("Stopping aquisition."); |
762 | ||
e0532047 JH |
763 | sr_session_source_remove_channel(devc->channel); |
764 | g_io_channel_shutdown(devc->channel, FALSE, NULL); | |
2150a69b JH |
765 | g_io_channel_unref(devc->channel); |
766 | devc->channel = NULL; | |
c216d623 AG |
767 | |
768 | /* Send last packet. */ | |
769 | packet.type = SR_DF_END; | |
c07f60e7 | 770 | sr_session_send(sdi, &packet); |
7fd3e859 | 771 | |
3010f21c | 772 | return SR_OK; |
6239c175 UH |
773 | } |
774 | ||
c09f0b57 | 775 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
776 | .name = "demo", |
777 | .longname = "Demo driver and pattern generator", | |
778 | .api_version = 1, | |
6078d2c9 UH |
779 | .init = init, |
780 | .cleanup = cleanup, | |
781 | .scan = scan, | |
782 | .dev_list = dev_list, | |
3b412e3a | 783 | .dev_clear = dev_clear, |
035a1078 BV |
784 | .config_get = config_get, |
785 | .config_set = config_set, | |
a1c743fc | 786 | .config_list = config_list, |
6078d2c9 UH |
787 | .dev_open = dev_open, |
788 | .dev_close = dev_close, | |
789 | .dev_acquisition_start = dev_acquisition_start, | |
790 | .dev_acquisition_stop = dev_acquisition_stop, | |
b4750a3a | 791 | .priv = NULL, |
6239c175 | 792 | }; |