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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 | |
3f239f08 UH |
37 | #define DEFAULT_NUM_LOGIC_CHANNELS 8 |
38 | #define DEFAULT_NUM_ANALOG_CHANNELS 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 | /** |
ba7dd8bb | 51 | * Spells "sigrok" across 8 channels using '0's (with '1's as |
61c39f54 | 52 | * "background") when displayed using the 'bits' output format. |
95035832 | 53 | * The pattern is repeated every 8 channels, shifted to the right |
c07f60e7 | 54 | * in time by one bit. |
0d31276b | 55 | */ |
c8f4624d | 56 | PATTERN_SIGROK, |
0d31276b | 57 | |
ba7dd8bb | 58 | /** Pseudo-random values on all channels. */ |
c8f4624d | 59 | PATTERN_RANDOM, |
0d31276b UH |
60 | |
61 | /** | |
95035832 | 62 | * Incrementing number across 8 channels. The pattern is repeated |
ba7dd8bb | 63 | * every 8 channels, shifted to the right in time by one bit. |
0d31276b | 64 | */ |
c8f4624d | 65 | PATTERN_INC, |
c03ed397 | 66 | |
ba7dd8bb | 67 | /** All channels have a low logic state. */ |
c03ed397 UH |
68 | PATTERN_ALL_LOW, |
69 | ||
ba7dd8bb | 70 | /** All channels 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 | 111 | uint64_t cur_samplerate; |
b62bb97a | 112 | gboolean continuous; |
a7684294 JH |
113 | uint64_t limit_samples; |
114 | uint64_t limit_msec; | |
7f4975b4 BV |
115 | uint64_t logic_counter; |
116 | uint64_t analog_counter; | |
3b203673 | 117 | int64_t starttime; |
61c39f54 | 118 | uint64_t step; |
8b2d41ed | 119 | /* Logic */ |
ba7dd8bb | 120 | int32_t num_logic_channels; |
c07f60e7 | 121 | unsigned int logic_unitsize; |
660e398f | 122 | /* There is only ever one logic channel group, so its pattern goes here. */ |
c07f60e7 BV |
123 | uint8_t logic_pattern; |
124 | unsigned char logic_data[LOGIC_BUFSIZE]; | |
8b2d41ed | 125 | /* Analog */ |
ba7dd8bb | 126 | int32_t num_analog_channels; |
660e398f | 127 | GSList *analog_channel_groups; |
c07f60e7 BV |
128 | }; |
129 | ||
7a1da331 | 130 | static const int32_t scanopts[] = { |
3f239f08 UH |
131 | SR_CONF_NUM_LOGIC_CHANNELS, |
132 | SR_CONF_NUM_ANALOG_CHANNELS, | |
e15f48c2 | 133 | }; |
85b5af06 | 134 | |
7a1da331 | 135 | static const int devopts[] = { |
1953564a BV |
136 | SR_CONF_LOGIC_ANALYZER, |
137 | SR_CONF_DEMO_DEV, | |
138 | SR_CONF_SAMPLERATE, | |
b62bb97a | 139 | SR_CONF_CONTINUOUS, |
1953564a BV |
140 | SR_CONF_LIMIT_SAMPLES, |
141 | SR_CONF_LIMIT_MSEC, | |
6239c175 UH |
142 | }; |
143 | ||
40fd0264 | 144 | static const int devopts_cg[] = { |
7a1da331 BV |
145 | SR_CONF_PATTERN_MODE, |
146 | }; | |
147 | ||
d00088ca BV |
148 | static const uint64_t samplerates[] = { |
149 | SR_HZ(1), | |
150 | SR_GHZ(1), | |
151 | SR_HZ(1), | |
4bfbf9fc BV |
152 | }; |
153 | ||
c8f4624d | 154 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
155 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
156 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
157 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
158 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
159 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
160 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
161 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
162 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
163 | }; | |
164 | ||
dcf03d6d | 165 | SR_PRIV struct sr_dev_driver demo_driver_info; |
a873c594 | 166 | static struct sr_dev_driver *di = &demo_driver_info; |
6239c175 | 167 | |
6078d2c9 | 168 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 169 | |
c07f60e7 | 170 | |
6078d2c9 | 171 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 172 | { |
f6beaac5 | 173 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
174 | } |
175 | ||
53b4680f | 176 | static void generate_analog_pattern(const struct sr_channel_group *cg, uint64_t sample_rate) |
8b2d41ed BV |
177 | { |
178 | struct analog_gen *ag; | |
4374219b | 179 | double t, frequency; |
8b2d41ed BV |
180 | float value; |
181 | unsigned int num_samples, i; | |
182 | int last_end; | |
183 | ||
53b4680f | 184 | ag = cg->priv; |
4374219b DJ |
185 | num_samples = ANALOG_BUFSIZE / sizeof(float); |
186 | ||
660e398f | 187 | sr_dbg("Generating %s pattern for channel group %s", |
53b4680f | 188 | analog_pattern_str[ag->pattern], cg->name); |
8b2d41ed | 189 | |
4374219b | 190 | switch (ag->pattern) { |
8b2d41ed | 191 | case PATTERN_SQUARE: |
2438b737 | 192 | value = ANALOG_AMPLITUDE; |
8b2d41ed BV |
193 | last_end = 0; |
194 | for (i = 0; i < num_samples; i++) { | |
195 | if (i % 5 == 0) | |
196 | value = -value; | |
197 | if (i % 10 == 0) | |
198 | last_end = i - 1; | |
199 | ag->pattern_data[i] = value; | |
200 | } | |
201 | ag->num_samples = last_end; | |
202 | break; | |
4374219b DJ |
203 | |
204 | case PATTERN_SINE: | |
9d156555 | 205 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
4374219b DJ |
206 | |
207 | /* Make sure the number of samples we put out is an integer | |
208 | * multiple of our period size */ | |
209 | /* FIXME we actually need only one period. A ringbuffer would be | |
210 | * usefull here.*/ | |
211 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
212 | num_samples--; | |
213 | ||
214 | for (i = 0; i < num_samples; i++) { | |
215 | t = (double) i / (double) sample_rate; | |
216 | ag->pattern_data[i] = ANALOG_AMPLITUDE * | |
217 | sin(2 * M_PI * frequency * t); | |
218 | } | |
219 | ||
091c9621 DJ |
220 | ag->num_samples = num_samples; |
221 | break; | |
222 | ||
223 | case PATTERN_TRIANGLE: | |
9d156555 | 224 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
091c9621 DJ |
225 | |
226 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
227 | num_samples--; | |
228 | ||
229 | for (i = 0; i < num_samples; i++) { | |
230 | t = (double) i / (double) sample_rate; | |
231 | ag->pattern_data[i] = (2 * ANALOG_AMPLITUDE / M_PI) * | |
232 | asin(sin(2 * M_PI * frequency * t)); | |
233 | } | |
234 | ||
9f54e0e8 DJ |
235 | ag->num_samples = num_samples; |
236 | break; | |
237 | ||
238 | case PATTERN_SAWTOOTH: | |
9d156555 | 239 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
9f54e0e8 DJ |
240 | |
241 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
242 | num_samples--; | |
243 | ||
244 | for (i = 0; i < num_samples; i++) { | |
245 | t = (double) i / (double) sample_rate; | |
246 | ag->pattern_data[i] = 2 * ANALOG_AMPLITUDE * | |
247 | ((t * frequency) - floor(0.5f + t * frequency)); | |
248 | } | |
249 | ||
4374219b DJ |
250 | ag->num_samples = num_samples; |
251 | break; | |
8b2d41ed BV |
252 | } |
253 | } | |
254 | ||
6078d2c9 | 255 | static GSList *scan(GSList *options) |
6239c175 | 256 | { |
b4750a3a | 257 | struct drv_context *drvc; |
33ef7573 | 258 | struct dev_context *devc; |
c07f60e7 | 259 | struct sr_dev_inst *sdi; |
ba7dd8bb | 260 | struct sr_channel *ch; |
40fd0264 | 261 | struct sr_channel_group *cg; |
c07f60e7 | 262 | struct sr_config *src; |
8b2d41ed | 263 | struct analog_gen *ag; |
c07f60e7 | 264 | GSList *devices, *l; |
ba7dd8bb UH |
265 | int num_logic_channels, num_analog_channels, pattern, i; |
266 | char channel_name[16]; | |
067d0716 | 267 | |
a873c594 | 268 | drvc = di->priv; |
4b97c74e | 269 | |
3f239f08 UH |
270 | num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS; |
271 | num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS; | |
c07f60e7 BV |
272 | for (l = options; l; l = l->next) { |
273 | src = l->data; | |
274 | switch (src->key) { | |
3f239f08 | 275 | case SR_CONF_NUM_LOGIC_CHANNELS: |
ba7dd8bb | 276 | num_logic_channels = g_variant_get_int32(src->data); |
c07f60e7 | 277 | break; |
3f239f08 | 278 | case SR_CONF_NUM_ANALOG_CHANNELS: |
ba7dd8bb | 279 | num_analog_channels = g_variant_get_int32(src->data); |
c07f60e7 BV |
280 | break; |
281 | } | |
282 | } | |
85b5af06 | 283 | |
c07f60e7 | 284 | devices = NULL; |
61c39f54 | 285 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Demo device", NULL, NULL); |
c03ed397 | 286 | if (!sdi) { |
e45ad6e2 UH |
287 | sr_err("Device instance creation failed."); |
288 | return NULL; | |
c03ed397 | 289 | } |
a873c594 | 290 | sdi->driver = di; |
e15f48c2 | 291 | |
8b2d41ed BV |
292 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { |
293 | sr_err("Device context malloc failed."); | |
294 | return NULL; | |
295 | } | |
296 | devc->cur_samplerate = SR_KHZ(200); | |
297 | devc->limit_samples = 0; | |
298 | devc->limit_msec = 0; | |
299 | devc->step = 0; | |
b62bb97a | 300 | devc->continuous = FALSE; |
ba7dd8bb UH |
301 | devc->num_logic_channels = num_logic_channels; |
302 | devc->logic_unitsize = (devc->num_logic_channels + 7) / 8; | |
8b2d41ed | 303 | devc->logic_pattern = PATTERN_SIGROK; |
ba7dd8bb | 304 | devc->num_analog_channels = num_analog_channels; |
660e398f | 305 | devc->analog_channel_groups = NULL; |
8b2d41ed | 306 | |
ba7dd8bb | 307 | /* Logic channels, all in one channel group. */ |
40fd0264 | 308 | if (!(cg = g_try_malloc(sizeof(struct sr_channel_group)))) |
8b2d41ed | 309 | return NULL; |
40fd0264 | 310 | cg->name = g_strdup("Logic"); |
a68bf88e | 311 | cg->channels = NULL; |
40fd0264 | 312 | cg->priv = NULL; |
ba7dd8bb UH |
313 | for (i = 0; i < num_logic_channels; i++) { |
314 | sprintf(channel_name, "D%d", i); | |
3f239f08 | 315 | if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, channel_name))) |
87ca93c5 | 316 | return NULL; |
ba7dd8bb UH |
317 | sdi->channels = g_slist_append(sdi->channels, ch); |
318 | cg->channels = g_slist_append(cg->channels, ch); | |
87ca93c5 | 319 | } |
40fd0264 | 320 | sdi->channel_groups = g_slist_append(NULL, cg); |
87ca93c5 | 321 | |
ba7dd8bb | 322 | /* Analog channels, channel groups and pattern generators. */ |
2b36d6c6 BV |
323 | |
324 | pattern = 0; | |
ba7dd8bb UH |
325 | for (i = 0; i < num_analog_channels; i++) { |
326 | sprintf(channel_name, "A%d", i); | |
56d0d245 | 327 | if (!(ch = sr_channel_new(i + num_logic_channels, |
3f239f08 | 328 | SR_CHANNEL_ANALOG, TRUE, channel_name))) |
c07f60e7 | 329 | return NULL; |
ba7dd8bb | 330 | sdi->channels = g_slist_append(sdi->channels, ch); |
c07f60e7 | 331 | |
ba7dd8bb | 332 | /* Every analog channel gets its own channel group. */ |
40fd0264 | 333 | if (!(cg = g_try_malloc(sizeof(struct sr_channel_group)))) |
8b2d41ed | 334 | return NULL; |
ba7dd8bb UH |
335 | cg->name = g_strdup(channel_name); |
336 | cg->channels = g_slist_append(NULL, ch); | |
85b5af06 | 337 | |
660e398f | 338 | /* Every channel group gets a generator struct. */ |
8b2d41ed BV |
339 | if (!(ag = g_try_malloc(sizeof(struct analog_gen)))) |
340 | return NULL; | |
ba7dd8bb | 341 | ag->packet.channels = cg->channels; |
8b2d41ed BV |
342 | ag->packet.mq = 0; |
343 | ag->packet.mqflags = 0; | |
344 | ag->packet.unit = SR_UNIT_VOLT; | |
345 | ag->packet.data = ag->pattern_data; | |
2b36d6c6 | 346 | ag->pattern = pattern; |
40fd0264 | 347 | cg->priv = ag; |
8b2d41ed | 348 | |
40fd0264 UH |
349 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); |
350 | devc->analog_channel_groups = g_slist_append(devc->analog_channel_groups, cg); | |
2b36d6c6 BV |
351 | |
352 | if (++pattern == ARRAY_SIZE(analog_pattern_str)) | |
353 | pattern = 0; | |
33ef7573 | 354 | } |
33ef7573 JH |
355 | |
356 | sdi->priv = devc; | |
8b2d41ed BV |
357 | devices = g_slist_append(devices, sdi); |
358 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
33ef7573 | 359 | |
067d0716 | 360 | return devices; |
6239c175 UH |
361 | } |
362 | ||
6078d2c9 | 363 | static GSList *dev_list(void) |
811deee4 | 364 | { |
0e94d524 | 365 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
366 | } |
367 | ||
6078d2c9 | 368 | static int dev_open(struct sr_dev_inst *sdi) |
6239c175 | 369 | { |
e73ffd42 | 370 | sdi->status = SR_ST_ACTIVE; |
697785d1 | 371 | |
e46b8fb1 | 372 | return SR_OK; |
6239c175 UH |
373 | } |
374 | ||
6078d2c9 | 375 | static int dev_close(struct sr_dev_inst *sdi) |
6239c175 | 376 | { |
decfe89d | 377 | sdi->status = SR_ST_INACTIVE; |
697785d1 UH |
378 | |
379 | return SR_OK; | |
6239c175 UH |
380 | } |
381 | ||
ed0b7fed BV |
382 | static void clear_helper(void *priv) |
383 | { | |
384 | struct dev_context *devc; | |
385 | struct sr_channel_group *cg; | |
386 | GSList *l; | |
387 | ||
388 | devc = priv; | |
389 | for (l = devc->analog_channel_groups; l; l = l->next) { | |
390 | cg = l->data; | |
391 | /* Analog generators. */ | |
392 | g_free(cg->priv); | |
393 | } | |
394 | g_slist_free(devc->analog_channel_groups); | |
395 | g_free(devc); | |
396 | } | |
397 | ||
6078d2c9 | 398 | static int cleanup(void) |
6239c175 | 399 | { |
ed0b7fed | 400 | return std_dev_clear(di, clear_helper); |
6239c175 UH |
401 | } |
402 | ||
8f996b89 | 403 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 404 | const struct sr_channel_group *cg) |
6239c175 | 405 | { |
c07f60e7 | 406 | struct dev_context *devc; |
ba7dd8bb | 407 | struct sr_channel *ch; |
2388ae86 BV |
408 | struct analog_gen *ag; |
409 | int pattern; | |
6f57fd96 | 410 | |
2388ae86 BV |
411 | if (!sdi) |
412 | return SR_ERR_ARG; | |
8f996b89 | 413 | |
c07f60e7 | 414 | devc = sdi->priv; |
035a1078 | 415 | switch (id) { |
123e1313 | 416 | case SR_CONF_SAMPLERATE: |
a7684294 | 417 | *data = g_variant_new_uint64(devc->cur_samplerate); |
6239c175 | 418 | break; |
2474d87e | 419 | case SR_CONF_LIMIT_SAMPLES: |
a7684294 | 420 | *data = g_variant_new_uint64(devc->limit_samples); |
2474d87e BV |
421 | break; |
422 | case SR_CONF_LIMIT_MSEC: | |
a7684294 | 423 | *data = g_variant_new_uint64(devc->limit_msec); |
2474d87e BV |
424 | break; |
425 | case SR_CONF_PATTERN_MODE: | |
53b4680f | 426 | if (!cg) |
660e398f | 427 | return SR_ERR_CHANNEL_GROUP; |
ba7dd8bb | 428 | ch = cg->channels->data; |
3f239f08 | 429 | if (ch->type == SR_CHANNEL_LOGIC) { |
2388ae86 BV |
430 | pattern = devc->logic_pattern; |
431 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
3f239f08 | 432 | } else if (ch->type == SR_CHANNEL_ANALOG) { |
53b4680f | 433 | ag = cg->priv; |
2388ae86 BV |
434 | pattern = ag->pattern; |
435 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
436 | } else | |
437 | return SR_ERR_BUG; | |
c07f60e7 | 438 | break; |
3f239f08 | 439 | case SR_CONF_NUM_LOGIC_CHANNELS: |
ba7dd8bb | 440 | *data = g_variant_new_int32(devc->num_logic_channels); |
c07f60e7 | 441 | break; |
3f239f08 | 442 | case SR_CONF_NUM_ANALOG_CHANNELS: |
ba7dd8bb | 443 | *data = g_variant_new_int32(devc->num_analog_channels); |
2474d87e | 444 | break; |
7dfcf010 | 445 | default: |
bd6fbf62 | 446 | return SR_ERR_NA; |
6239c175 UH |
447 | } |
448 | ||
dfb0fa1a | 449 | return SR_OK; |
6239c175 UH |
450 | } |
451 | ||
8f996b89 | 452 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 453 | const struct sr_channel_group *cg) |
6239c175 | 454 | { |
8b2d41ed | 455 | struct dev_context *devc; |
4374219b | 456 | struct analog_gen *ag; |
ba7dd8bb | 457 | struct sr_channel *ch; |
2388ae86 | 458 | int pattern, ret; |
61c39f54 | 459 | unsigned int i; |
1b79df2f | 460 | const char *stropt; |
6239c175 | 461 | |
8b2d41ed | 462 | devc = sdi->priv; |
6239c175 | 463 | |
e73ffd42 BV |
464 | if (sdi->status != SR_ST_ACTIVE) |
465 | return SR_ERR_DEV_CLOSED; | |
466 | ||
2388ae86 BV |
467 | ret = SR_OK; |
468 | switch (id) { | |
469 | case SR_CONF_SAMPLERATE: | |
a7684294 | 470 | devc->cur_samplerate = g_variant_get_uint64(data); |
61c39f54 | 471 | sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); |
2388ae86 BV |
472 | break; |
473 | case SR_CONF_LIMIT_SAMPLES: | |
a7684294 JH |
474 | devc->limit_msec = 0; |
475 | devc->limit_samples = g_variant_get_uint64(data); | |
8b2d41ed | 476 | sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); |
2388ae86 BV |
477 | break; |
478 | case SR_CONF_LIMIT_MSEC: | |
a7684294 JH |
479 | devc->limit_msec = g_variant_get_uint64(data); |
480 | devc->limit_samples = 0; | |
8b2d41ed | 481 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); |
2388ae86 BV |
482 | break; |
483 | case SR_CONF_PATTERN_MODE: | |
53b4680f | 484 | if (!cg) |
660e398f | 485 | return SR_ERR_CHANNEL_GROUP; |
d00088ca | 486 | stropt = g_variant_get_string(data, NULL); |
ba7dd8bb | 487 | ch = cg->channels->data; |
2388ae86 | 488 | pattern = -1; |
3f239f08 | 489 | if (ch->type == SR_CHANNEL_LOGIC) { |
2388ae86 BV |
490 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { |
491 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
492 | pattern = i; | |
8b2d41ed BV |
493 | break; |
494 | } | |
495 | } | |
2388ae86 BV |
496 | if (pattern == -1) |
497 | return SR_ERR_ARG; | |
498 | devc->logic_pattern = pattern; | |
499 | ||
500 | /* Might as well do this now, these are static. */ | |
501 | if (pattern == PATTERN_ALL_LOW) | |
8b2d41ed | 502 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); |
2388ae86 | 503 | else if (pattern == PATTERN_ALL_HIGH) |
8b2d41ed | 504 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); |
2388ae86 BV |
505 | sr_dbg("Setting logic pattern to %s", |
506 | logic_pattern_str[pattern]); | |
3f239f08 | 507 | } else if (ch->type == SR_CHANNEL_ANALOG) { |
2388ae86 BV |
508 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { |
509 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
510 | pattern = i; | |
511 | break; | |
8b2d41ed | 512 | } |
8b2d41ed | 513 | } |
2388ae86 BV |
514 | if (pattern == -1) |
515 | return SR_ERR_ARG; | |
660e398f | 516 | sr_dbg("Setting analog pattern for channel group %s to %s", |
53b4680f UH |
517 | cg->name, analog_pattern_str[pattern]); |
518 | ag = cg->priv; | |
4374219b | 519 | ag->pattern = pattern; |
2388ae86 BV |
520 | } else |
521 | return SR_ERR_BUG; | |
522 | break; | |
523 | default: | |
bd6fbf62 | 524 | ret = SR_ERR_NA; |
6239c175 UH |
525 | } |
526 | ||
527 | return ret; | |
528 | } | |
529 | ||
8f996b89 | 530 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 531 | const struct sr_channel_group *cg) |
a1c743fc | 532 | { |
ba7dd8bb | 533 | struct sr_channel *ch; |
d00088ca BV |
534 | GVariant *gvar; |
535 | GVariantBuilder gvb; | |
a1c743fc BV |
536 | |
537 | (void)sdi; | |
538 | ||
7a1da331 | 539 | if (key == SR_CONF_SCAN_OPTIONS) { |
c07f60e7 | 540 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
7a1da331 BV |
541 | scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); |
542 | return SR_OK; | |
543 | } | |
544 | ||
545 | if (!sdi) | |
546 | return SR_ERR_ARG; | |
547 | ||
53b4680f | 548 | if (!cg) { |
7a1da331 BV |
549 | switch (key) { |
550 | case SR_CONF_DEVICE_OPTIONS: | |
551 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
552 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
553 | break; | |
554 | case SR_CONF_SAMPLERATE: | |
555 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
556 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
557 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
558 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
559 | *data = g_variant_builder_end(&gvb); | |
560 | break; | |
561 | default: | |
562 | return SR_ERR_NA; | |
563 | } | |
564 | } else { | |
ba7dd8bb | 565 | ch = cg->channels->data; |
7a1da331 BV |
566 | switch (key) { |
567 | case SR_CONF_DEVICE_OPTIONS: | |
568 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
40fd0264 | 569 | devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(int32_t)); |
7a1da331 BV |
570 | break; |
571 | case SR_CONF_PATTERN_MODE: | |
3f239f08 | 572 | if (ch->type == SR_CHANNEL_LOGIC) |
7a1da331 BV |
573 | *data = g_variant_new_strv(logic_pattern_str, |
574 | ARRAY_SIZE(logic_pattern_str)); | |
3f239f08 | 575 | else if (ch->type == SR_CHANNEL_ANALOG) |
7a1da331 BV |
576 | *data = g_variant_new_strv(analog_pattern_str, |
577 | ARRAY_SIZE(analog_pattern_str)); | |
2388ae86 BV |
578 | else |
579 | return SR_ERR_BUG; | |
7a1da331 BV |
580 | break; |
581 | default: | |
582 | return SR_ERR_NA; | |
583 | } | |
a1c743fc BV |
584 | } |
585 | ||
586 | return SR_OK; | |
587 | } | |
588 | ||
c07f60e7 | 589 | static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) |
85b5af06 | 590 | { |
61c39f54 | 591 | struct dev_context *devc; |
c07f60e7 BV |
592 | uint64_t i, j; |
593 | uint8_t pat; | |
85b5af06 | 594 | |
61c39f54 | 595 | devc = sdi->priv; |
85b5af06 | 596 | |
c07f60e7 | 597 | switch (devc->logic_pattern) { |
61c39f54 | 598 | case PATTERN_SIGROK: |
c07f60e7 BV |
599 | memset(devc->logic_data, 0x00, size); |
600 | for (i = 0; i < size; i += devc->logic_unitsize) { | |
601 | for (j = 0; j < devc->logic_unitsize; j++) { | |
602 | pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; | |
603 | devc->logic_data[i + j] = ~pat; | |
604 | } | |
605 | devc->step++; | |
917e0e71 BV |
606 | } |
607 | break; | |
61c39f54 | 608 | case PATTERN_RANDOM: |
5096c6a6 | 609 | for (i = 0; i < size; i++) |
61c39f54 | 610 | devc->logic_data[i] = (uint8_t)(rand() & 0xff); |
85b5af06 | 611 | break; |
61c39f54 | 612 | case PATTERN_INC: |
c07f60e7 BV |
613 | for (i = 0; i < size; i++) { |
614 | for (j = 0; j < devc->logic_unitsize; j++) { | |
615 | devc->logic_data[i + j] = devc->step; | |
616 | } | |
617 | devc->step++; | |
618 | } | |
c03ed397 | 619 | break; |
61c39f54 BV |
620 | case PATTERN_ALL_LOW: |
621 | case PATTERN_ALL_HIGH: | |
622 | /* These were set when the pattern mode was selected. */ | |
c03ed397 UH |
623 | break; |
624 | default: | |
c07f60e7 | 625 | sr_err("Unknown pattern: %d.", devc->logic_pattern); |
c03ed397 | 626 | break; |
85b5af06 UH |
627 | } |
628 | } | |
629 | ||
85b5af06 | 630 | /* Callback handling data */ |
61c39f54 | 631 | static int prepare_data(int fd, int revents, void *cb_data) |
85b5af06 | 632 | { |
61c39f54 BV |
633 | struct sr_dev_inst *sdi; |
634 | struct dev_context *devc; | |
b9c735a2 | 635 | struct sr_datafeed_packet packet; |
9c939c51 | 636 | struct sr_datafeed_logic logic; |
40fd0264 | 637 | struct sr_channel_group *cg; |
8b2d41ed BV |
638 | struct analog_gen *ag; |
639 | GSList *l; | |
b62bb97a | 640 | uint64_t logic_todo, analog_todo, expected_samplenum, analog_sent, sending_now; |
3b203673 | 641 | int64_t time, elapsed; |
1924f59f | 642 | |
cb93f8a9 UH |
643 | (void)fd; |
644 | (void)revents; | |
1924f59f | 645 | |
61c39f54 BV |
646 | sdi = cb_data; |
647 | devc = sdi->priv; | |
b62bb97a | 648 | logic_todo = analog_todo = 0; |
61c39f54 | 649 | |
b62bb97a | 650 | /* How many samples should we have sent by now? */ |
3b203673 AG |
651 | time = g_get_monotonic_time(); |
652 | elapsed = time - devc->starttime; | |
a7684294 | 653 | expected_samplenum = elapsed * devc->cur_samplerate / 1000000; |
7f4975b4 | 654 | |
b62bb97a BV |
655 | /* But never more than the limit, if there is one. */ |
656 | if (!devc->continuous) | |
657 | expected_samplenum = MIN(expected_samplenum, devc->limit_samples); | |
658 | ||
3b203673 | 659 | /* Of those, how many do we still have to send? */ |
b62bb97a BV |
660 | if (devc->num_logic_channels) |
661 | logic_todo = expected_samplenum - devc->logic_counter; | |
662 | if (devc->num_analog_channels) | |
663 | analog_todo = expected_samplenum - devc->analog_counter; | |
85b5af06 | 664 | |
7f4975b4 | 665 | while (logic_todo || analog_todo) { |
c07f60e7 | 666 | /* Logic */ |
b62bb97a BV |
667 | if (logic_todo > 0) { |
668 | sending_now = MIN(logic_todo, LOGIC_BUFSIZE / devc->logic_unitsize); | |
8b2d41ed BV |
669 | logic_generator(sdi, sending_now * devc->logic_unitsize); |
670 | packet.type = SR_DF_LOGIC; | |
671 | packet.payload = &logic; | |
672 | logic.length = sending_now * devc->logic_unitsize; | |
673 | logic.unitsize = devc->logic_unitsize; | |
674 | logic.data = devc->logic_data; | |
675 | sr_session_send(sdi, &packet); | |
7f4975b4 BV |
676 | logic_todo -= sending_now; |
677 | devc->logic_counter += sending_now; | |
8b2d41ed BV |
678 | } |
679 | ||
ba7dd8bb | 680 | /* Analog, one channel at a time */ |
b62bb97a BV |
681 | if (analog_todo > 0) { |
682 | analog_sent = 0; | |
660e398f | 683 | for (l = devc->analog_channel_groups; l; l = l->next) { |
40fd0264 UH |
684 | cg = l->data; |
685 | ag = cg->priv; | |
8b2d41ed BV |
686 | packet.type = SR_DF_ANALOG; |
687 | packet.payload = &ag->packet; | |
4374219b DJ |
688 | |
689 | /* FIXME we should make sure we output a whole | |
690 | * period of data before we send out again the | |
691 | * beginning of our buffer. A ring buffer would | |
692 | * help here as well */ | |
693 | ||
b62bb97a BV |
694 | sending_now = MIN(analog_todo, ag->num_samples); |
695 | ag->packet.num_samples = sending_now; | |
8b2d41ed | 696 | sr_session_send(sdi, &packet); |
b62bb97a BV |
697 | |
698 | /* Whichever channel group gets there first. */ | |
699 | analog_sent = MAX(analog_sent, sending_now); | |
8b2d41ed | 700 | } |
b62bb97a BV |
701 | analog_todo -= analog_sent; |
702 | devc->analog_counter += analog_sent; | |
8b2d41ed | 703 | } |
3b203673 AG |
704 | } |
705 | ||
b62bb97a BV |
706 | if (!devc->continuous |
707 | && (!devc->num_logic_channels || devc->logic_counter >= devc->limit_samples) | |
708 | && (!devc->num_analog_channels || devc->analog_counter >= devc->limit_samples)) { | |
7f4975b4 | 709 | sr_dbg("Requested number of samples reached."); |
61c39f54 | 710 | dev_acquisition_stop(sdi, cb_data); |
c216d623 | 711 | return TRUE; |
85b5af06 | 712 | } |
1924f59f | 713 | |
85b5af06 UH |
714 | return TRUE; |
715 | } | |
716 | ||
6078d2c9 | 717 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 718 | { |
4374219b | 719 | GSList *l; |
61c39f54 | 720 | struct dev_context *devc; |
85b5af06 | 721 | |
102f1239 BV |
722 | (void)cb_data; |
723 | ||
e73ffd42 BV |
724 | if (sdi->status != SR_ST_ACTIVE) |
725 | return SR_ERR_DEV_CLOSED; | |
726 | ||
61c39f54 | 727 | devc = sdi->priv; |
b62bb97a | 728 | devc->continuous = !devc->limit_samples; |
7f4975b4 | 729 | devc->logic_counter = devc->analog_counter = 0; |
85b5af06 | 730 | |
3b203673 AG |
731 | /* |
732 | * Setting two channels connected by a pipe is a remnant from when the | |
733 | * demo driver generated data in a thread, and collected and sent the | |
734 | * data in the main program loop. | |
735 | * They are kept here because it provides a convenient way of setting | |
736 | * up a timeout-based polling mechanism. | |
737 | */ | |
b4750a3a | 738 | if (pipe(devc->pipe_fds)) { |
92bcedf6 | 739 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 740 | return SR_ERR; |
c03ed397 | 741 | } |
85b5af06 | 742 | |
b62bb97a | 743 | for (l = devc->analog_channel_groups; l; l = l->next) |
4374219b | 744 | generate_analog_pattern(l->data, devc->cur_samplerate); |
4374219b | 745 | |
e0532047 | 746 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); |
e0532047 | 747 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 748 | |
d35aaf02 | 749 | /* Set channel encoding to binary (default is UTF-8). */ |
e0532047 | 750 | g_io_channel_set_encoding(devc->channel, NULL, NULL); |
d35aaf02 | 751 | |
b62bb97a | 752 | /* Make channels unbuffered. */ |
e0532047 | 753 | g_io_channel_set_buffered(devc->channel, FALSE); |
d35aaf02 | 754 | |
b62bb97a BV |
755 | sr_session_source_add_channel(sdi->session, devc->channel, |
756 | G_IO_IN | G_IO_ERR, 40, prepare_data, (void *)sdi); | |
85b5af06 | 757 | |
4afdfd46 | 758 | /* Send header packet to the session bus. */ |
102f1239 | 759 | std_session_send_df_header(sdi, LOG_PREFIX); |
f366e86c | 760 | |
3b203673 AG |
761 | /* We use this timestamp to decide how many more samples to send. */ |
762 | devc->starttime = g_get_monotonic_time(); | |
763 | ||
e46b8fb1 | 764 | return SR_OK; |
6239c175 UH |
765 | } |
766 | ||
6078d2c9 | 767 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 768 | { |
8b2d41ed | 769 | struct dev_context *devc; |
c216d623 | 770 | struct sr_datafeed_packet packet; |
7fd3e859 | 771 | |
33ef7573 | 772 | (void)cb_data; |
7fd3e859 | 773 | |
8b2d41ed | 774 | devc = sdi->priv; |
a84f6ad3 | 775 | sr_dbg("Stopping acquisition."); |
49145a63 | 776 | |
102f1239 | 777 | sr_session_source_remove_channel(sdi->session, devc->channel); |
e0532047 | 778 | g_io_channel_shutdown(devc->channel, FALSE, NULL); |
2150a69b JH |
779 | g_io_channel_unref(devc->channel); |
780 | devc->channel = NULL; | |
c216d623 AG |
781 | |
782 | /* Send last packet. */ | |
783 | packet.type = SR_DF_END; | |
c07f60e7 | 784 | sr_session_send(sdi, &packet); |
7fd3e859 | 785 | |
3010f21c | 786 | return SR_OK; |
6239c175 UH |
787 | } |
788 | ||
c09f0b57 | 789 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
790 | .name = "demo", |
791 | .longname = "Demo driver and pattern generator", | |
792 | .api_version = 1, | |
6078d2c9 UH |
793 | .init = init, |
794 | .cleanup = cleanup, | |
795 | .scan = scan, | |
796 | .dev_list = dev_list, | |
a6630742 | 797 | .dev_clear = NULL, |
035a1078 BV |
798 | .config_get = config_get, |
799 | .config_set = config_set, | |
a1c743fc | 800 | .config_list = config_list, |
6078d2c9 UH |
801 | .dev_open = dev_open, |
802 | .dev_close = dev_close, | |
803 | .dev_acquisition_start = dev_acquisition_start, | |
804 | .dev_acquisition_stop = dev_acquisition_stop, | |
b4750a3a | 805 | .priv = NULL, |
6239c175 | 806 | }; |