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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 | |
dddabe37 | 45 | #define DEFAULT_ANALOG_AMPLITUDE 25 |
4374219b DJ |
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; | |
dddabe37 | 102 | float amplitude; |
8b2d41ed BV |
103 | float pattern_data[ANALOG_BUFSIZE]; |
104 | unsigned int num_samples; | |
105 | struct sr_datafeed_analog packet; | |
106 | }; | |
107 | ||
b4750a3a BV |
108 | /* Private, per-device-instance driver context. */ |
109 | struct dev_context { | |
e15f48c2 | 110 | int pipe_fds[2]; |
e0532047 | 111 | GIOChannel *channel; |
a7684294 | 112 | uint64_t cur_samplerate; |
b62bb97a | 113 | gboolean continuous; |
a7684294 JH |
114 | uint64_t limit_samples; |
115 | uint64_t limit_msec; | |
7f4975b4 BV |
116 | uint64_t logic_counter; |
117 | uint64_t analog_counter; | |
3b203673 | 118 | int64_t starttime; |
61c39f54 | 119 | uint64_t step; |
8b2d41ed | 120 | /* Logic */ |
ba7dd8bb | 121 | int32_t num_logic_channels; |
c07f60e7 | 122 | unsigned int logic_unitsize; |
660e398f | 123 | /* There is only ever one logic channel group, so its pattern goes here. */ |
c07f60e7 BV |
124 | uint8_t logic_pattern; |
125 | unsigned char logic_data[LOGIC_BUFSIZE]; | |
8b2d41ed | 126 | /* Analog */ |
ba7dd8bb | 127 | int32_t num_analog_channels; |
49224c28 | 128 | GHashTable *ch_ag; |
c07f60e7 BV |
129 | }; |
130 | ||
1e4a7cac BV |
131 | static const uint32_t drvopts[] = { |
132 | SR_CONF_DEMO_DEV, | |
133 | SR_CONF_LOGIC_ANALYZER, | |
134 | SR_CONF_OSCILLOSCOPE, | |
135 | }; | |
136 | ||
584560f1 | 137 | static const uint32_t scanopts[] = { |
3f239f08 UH |
138 | SR_CONF_NUM_LOGIC_CHANNELS, |
139 | SR_CONF_NUM_ANALOG_CHANNELS, | |
e15f48c2 | 140 | }; |
85b5af06 | 141 | |
390795c0 | 142 | static const uint32_t devopts[] = { |
1e4a7cac | 143 | SR_CONF_CONTINUOUS | SR_CONF_SET, |
5827f61b BV |
144 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, |
145 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
390795c0 BV |
146 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
147 | }; | |
148 | ||
149 | static const uint32_t devopts_cg_logic[] = { | |
f12d9979 | 150 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
49224c28 BV |
151 | }; |
152 | ||
390795c0 | 153 | static const uint32_t devopts_cg_analog[] = { |
f12d9979 BV |
154 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
155 | SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET, | |
7a1da331 BV |
156 | }; |
157 | ||
d00088ca BV |
158 | static const uint64_t samplerates[] = { |
159 | SR_HZ(1), | |
160 | SR_GHZ(1), | |
161 | SR_HZ(1), | |
4bfbf9fc BV |
162 | }; |
163 | ||
c8f4624d | 164 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
165 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
166 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
167 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
168 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
169 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
170 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
171 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
172 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
173 | }; | |
174 | ||
dcf03d6d | 175 | SR_PRIV struct sr_dev_driver demo_driver_info; |
a873c594 | 176 | static struct sr_dev_driver *di = &demo_driver_info; |
6239c175 | 177 | |
6078d2c9 | 178 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 179 | |
c07f60e7 | 180 | |
6078d2c9 | 181 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 182 | { |
f6beaac5 | 183 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
184 | } |
185 | ||
49224c28 | 186 | static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate) |
8b2d41ed | 187 | { |
4374219b | 188 | double t, frequency; |
8b2d41ed BV |
189 | float value; |
190 | unsigned int num_samples, i; | |
191 | int last_end; | |
192 | ||
49224c28 | 193 | sr_dbg("Generating %s pattern.", analog_pattern_str[ag->pattern]); |
4374219b | 194 | |
49224c28 | 195 | num_samples = ANALOG_BUFSIZE / sizeof(float); |
8b2d41ed | 196 | |
4374219b | 197 | switch (ag->pattern) { |
8b2d41ed | 198 | case PATTERN_SQUARE: |
dddabe37 | 199 | value = ag->amplitude; |
8b2d41ed BV |
200 | last_end = 0; |
201 | for (i = 0; i < num_samples; i++) { | |
202 | if (i % 5 == 0) | |
203 | value = -value; | |
204 | if (i % 10 == 0) | |
3772c049 | 205 | last_end = i; |
8b2d41ed BV |
206 | ag->pattern_data[i] = value; |
207 | } | |
208 | ag->num_samples = last_end; | |
209 | break; | |
4374219b DJ |
210 | |
211 | case PATTERN_SINE: | |
9d156555 | 212 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
4374219b DJ |
213 | |
214 | /* Make sure the number of samples we put out is an integer | |
215 | * multiple of our period size */ | |
216 | /* FIXME we actually need only one period. A ringbuffer would be | |
217 | * usefull here.*/ | |
218 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
219 | num_samples--; | |
220 | ||
221 | for (i = 0; i < num_samples; i++) { | |
222 | t = (double) i / (double) sample_rate; | |
dddabe37 | 223 | ag->pattern_data[i] = ag->amplitude * |
4374219b DJ |
224 | sin(2 * M_PI * frequency * t); |
225 | } | |
226 | ||
091c9621 DJ |
227 | ag->num_samples = num_samples; |
228 | break; | |
229 | ||
230 | case PATTERN_TRIANGLE: | |
9d156555 | 231 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
091c9621 DJ |
232 | |
233 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
234 | num_samples--; | |
235 | ||
236 | for (i = 0; i < num_samples; i++) { | |
237 | t = (double) i / (double) sample_rate; | |
dddabe37 | 238 | ag->pattern_data[i] = (2 * ag->amplitude / M_PI) * |
091c9621 DJ |
239 | asin(sin(2 * M_PI * frequency * t)); |
240 | } | |
241 | ||
9f54e0e8 DJ |
242 | ag->num_samples = num_samples; |
243 | break; | |
244 | ||
245 | case PATTERN_SAWTOOTH: | |
9d156555 | 246 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
9f54e0e8 DJ |
247 | |
248 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
249 | num_samples--; | |
250 | ||
251 | for (i = 0; i < num_samples; i++) { | |
252 | t = (double) i / (double) sample_rate; | |
dddabe37 | 253 | ag->pattern_data[i] = 2 * ag->amplitude * |
9f54e0e8 DJ |
254 | ((t * frequency) - floor(0.5f + t * frequency)); |
255 | } | |
256 | ||
4374219b DJ |
257 | ag->num_samples = num_samples; |
258 | break; | |
8b2d41ed BV |
259 | } |
260 | } | |
261 | ||
6078d2c9 | 262 | static GSList *scan(GSList *options) |
6239c175 | 263 | { |
b4750a3a | 264 | struct drv_context *drvc; |
33ef7573 | 265 | struct dev_context *devc; |
c07f60e7 | 266 | struct sr_dev_inst *sdi; |
ba7dd8bb | 267 | struct sr_channel *ch; |
49224c28 | 268 | struct sr_channel_group *cg, *acg; |
c07f60e7 | 269 | struct sr_config *src; |
8b2d41ed | 270 | struct analog_gen *ag; |
c07f60e7 | 271 | GSList *devices, *l; |
ba7dd8bb UH |
272 | int num_logic_channels, num_analog_channels, pattern, i; |
273 | char channel_name[16]; | |
067d0716 | 274 | |
a873c594 | 275 | drvc = di->priv; |
4b97c74e | 276 | |
3f239f08 UH |
277 | num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS; |
278 | num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS; | |
c07f60e7 BV |
279 | for (l = options; l; l = l->next) { |
280 | src = l->data; | |
281 | switch (src->key) { | |
3f239f08 | 282 | case SR_CONF_NUM_LOGIC_CHANNELS: |
ba7dd8bb | 283 | num_logic_channels = g_variant_get_int32(src->data); |
c07f60e7 | 284 | break; |
3f239f08 | 285 | case SR_CONF_NUM_ANALOG_CHANNELS: |
ba7dd8bb | 286 | num_analog_channels = g_variant_get_int32(src->data); |
c07f60e7 BV |
287 | break; |
288 | } | |
289 | } | |
85b5af06 | 290 | |
c07f60e7 | 291 | devices = NULL; |
0af636be | 292 | |
aac29cc1 | 293 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be | 294 | sdi->status = SR_ST_ACTIVE; |
4b664cd6 | 295 | sdi->model = g_strdup("Demo device"); |
a873c594 | 296 | sdi->driver = di; |
e15f48c2 | 297 | |
49224c28 | 298 | devc = g_malloc(sizeof(struct dev_context)); |
8b2d41ed BV |
299 | devc->cur_samplerate = SR_KHZ(200); |
300 | devc->limit_samples = 0; | |
301 | devc->limit_msec = 0; | |
302 | devc->step = 0; | |
b62bb97a | 303 | devc->continuous = FALSE; |
ba7dd8bb UH |
304 | devc->num_logic_channels = num_logic_channels; |
305 | devc->logic_unitsize = (devc->num_logic_channels + 7) / 8; | |
8b2d41ed | 306 | devc->logic_pattern = PATTERN_SIGROK; |
ba7dd8bb | 307 | devc->num_analog_channels = num_analog_channels; |
8b2d41ed | 308 | |
ba7dd8bb | 309 | /* Logic channels, all in one channel group. */ |
49224c28 | 310 | cg = g_malloc0(sizeof(struct sr_channel_group)); |
40fd0264 | 311 | cg->name = g_strdup("Logic"); |
ba7dd8bb UH |
312 | for (i = 0; i < num_logic_channels; i++) { |
313 | sprintf(channel_name, "D%d", i); | |
c368e6f3 | 314 | ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, channel_name); |
ba7dd8bb UH |
315 | sdi->channels = g_slist_append(sdi->channels, ch); |
316 | cg->channels = g_slist_append(cg->channels, ch); | |
87ca93c5 | 317 | } |
40fd0264 | 318 | sdi->channel_groups = g_slist_append(NULL, cg); |
87ca93c5 | 319 | |
ba7dd8bb | 320 | /* Analog channels, channel groups and pattern generators. */ |
2b36d6c6 | 321 | pattern = 0; |
49224c28 BV |
322 | /* An "Analog" channel group with all analog channels in it. */ |
323 | acg = g_malloc0(sizeof(struct sr_channel_group)); | |
324 | acg->name = g_strdup("Analog"); | |
325 | sdi->channel_groups = g_slist_append(sdi->channel_groups, acg); | |
326 | ||
327 | devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal); | |
ba7dd8bb | 328 | for (i = 0; i < num_analog_channels; i++) { |
49224c28 BV |
329 | snprintf(channel_name, 16, "A%d", i); |
330 | ch = sr_channel_new(i + num_logic_channels, SR_CHANNEL_ANALOG, | |
331 | TRUE, channel_name); | |
ba7dd8bb | 332 | sdi->channels = g_slist_append(sdi->channels, ch); |
49224c28 | 333 | acg->channels = g_slist_append(acg->channels, ch); |
c07f60e7 | 334 | |
49224c28 BV |
335 | /* Every analog channel gets its own channel group as well. */ |
336 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
ba7dd8bb UH |
337 | cg->name = g_strdup(channel_name); |
338 | cg->channels = g_slist_append(NULL, ch); | |
49224c28 | 339 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); |
85b5af06 | 340 | |
49224c28 BV |
341 | /* Every channel gets a generator struct. */ |
342 | ag = g_malloc(sizeof(struct analog_gen)); | |
dddabe37 | 343 | ag->amplitude = DEFAULT_ANALOG_AMPLITUDE; |
ba7dd8bb | 344 | ag->packet.channels = cg->channels; |
8b2d41ed BV |
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; |
49224c28 | 350 | g_hash_table_insert(devc->ch_ag, ch, ag); |
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; | |
49224c28 BV |
385 | GHashTableIter iter; |
386 | void *value; | |
ed0b7fed BV |
387 | |
388 | devc = priv; | |
49224c28 BV |
389 | |
390 | /* Analog generators. */ | |
391 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
392 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
393 | g_free(value); | |
394 | g_hash_table_unref(devc->ch_ag); | |
ed0b7fed BV |
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 | ||
584560f1 | 403 | static int config_get(uint32_t key, 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; |
584560f1 | 415 | switch (key) { |
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; |
49224c28 | 428 | /* Any channel in the group will do. */ |
ba7dd8bb | 429 | ch = cg->channels->data; |
3f239f08 | 430 | if (ch->type == SR_CHANNEL_LOGIC) { |
2388ae86 BV |
431 | pattern = devc->logic_pattern; |
432 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
3f239f08 | 433 | } else if (ch->type == SR_CHANNEL_ANALOG) { |
49224c28 | 434 | ag = g_hash_table_lookup(devc->ch_ag, ch); |
2388ae86 BV |
435 | pattern = ag->pattern; |
436 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
437 | } else | |
438 | return SR_ERR_BUG; | |
c07f60e7 | 439 | break; |
dddabe37 BV |
440 | case SR_CONF_AMPLITUDE: |
441 | if (!cg) | |
442 | return SR_ERR_CHANNEL_GROUP; | |
49224c28 | 443 | /* Any channel in the group will do. */ |
dddabe37 BV |
444 | ch = cg->channels->data; |
445 | if (ch->type != SR_CHANNEL_ANALOG) | |
446 | return SR_ERR_ARG; | |
49224c28 | 447 | ag = g_hash_table_lookup(devc->ch_ag, ch); |
dddabe37 BV |
448 | *data = g_variant_new_double(ag->amplitude); |
449 | break; | |
7dfcf010 | 450 | default: |
bd6fbf62 | 451 | return SR_ERR_NA; |
6239c175 UH |
452 | } |
453 | ||
dfb0fa1a | 454 | return SR_OK; |
6239c175 UH |
455 | } |
456 | ||
584560f1 | 457 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 458 | const struct sr_channel_group *cg) |
6239c175 | 459 | { |
8b2d41ed | 460 | struct dev_context *devc; |
4374219b | 461 | struct analog_gen *ag; |
ba7dd8bb | 462 | struct sr_channel *ch; |
49224c28 BV |
463 | GSList *l; |
464 | int logic_pattern, analog_pattern, ret; | |
61c39f54 | 465 | unsigned int i; |
1b79df2f | 466 | const char *stropt; |
6239c175 | 467 | |
8b2d41ed | 468 | devc = sdi->priv; |
6239c175 | 469 | |
e73ffd42 BV |
470 | if (sdi->status != SR_ST_ACTIVE) |
471 | return SR_ERR_DEV_CLOSED; | |
472 | ||
2388ae86 | 473 | ret = SR_OK; |
584560f1 | 474 | switch (key) { |
2388ae86 | 475 | case SR_CONF_SAMPLERATE: |
a7684294 | 476 | devc->cur_samplerate = g_variant_get_uint64(data); |
61c39f54 | 477 | sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); |
2388ae86 BV |
478 | break; |
479 | case SR_CONF_LIMIT_SAMPLES: | |
a7684294 JH |
480 | devc->limit_msec = 0; |
481 | devc->limit_samples = g_variant_get_uint64(data); | |
8b2d41ed | 482 | sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); |
2388ae86 BV |
483 | break; |
484 | case SR_CONF_LIMIT_MSEC: | |
a7684294 JH |
485 | devc->limit_msec = g_variant_get_uint64(data); |
486 | devc->limit_samples = 0; | |
8b2d41ed | 487 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); |
2388ae86 BV |
488 | break; |
489 | case SR_CONF_PATTERN_MODE: | |
53b4680f | 490 | if (!cg) |
660e398f | 491 | return SR_ERR_CHANNEL_GROUP; |
d00088ca | 492 | stropt = g_variant_get_string(data, NULL); |
49224c28 BV |
493 | logic_pattern = analog_pattern = -1; |
494 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { | |
495 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
496 | logic_pattern = i; | |
497 | break; | |
8b2d41ed | 498 | } |
49224c28 BV |
499 | } |
500 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { | |
501 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
502 | analog_pattern = i; | |
503 | break; | |
8b2d41ed | 504 | } |
49224c28 BV |
505 | } |
506 | if (logic_pattern == -1 && analog_pattern == -1) | |
507 | return SR_ERR_ARG; | |
508 | for (l = cg->channels; l; l = l->next) { | |
509 | ch = l->data; | |
510 | if (ch->type == SR_CHANNEL_LOGIC) { | |
511 | if (logic_pattern == -1) | |
512 | return SR_ERR_ARG; | |
513 | sr_dbg("Setting logic pattern to %s", | |
514 | logic_pattern_str[logic_pattern]); | |
515 | devc->logic_pattern = logic_pattern; | |
516 | /* Might as well do this now, these are static. */ | |
517 | if (logic_pattern == PATTERN_ALL_LOW) | |
518 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); | |
519 | else if (logic_pattern == PATTERN_ALL_HIGH) | |
520 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); | |
521 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
522 | if (analog_pattern == -1) | |
523 | return SR_ERR_ARG; | |
524 | sr_dbg("Setting analog pattern for channel %s to %s", | |
525 | ch->name, analog_pattern_str[analog_pattern]); | |
526 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
527 | ag->pattern = analog_pattern; | |
528 | } else | |
529 | return SR_ERR_BUG; | |
530 | } | |
2388ae86 | 531 | break; |
dddabe37 BV |
532 | case SR_CONF_AMPLITUDE: |
533 | if (!cg) | |
534 | return SR_ERR_CHANNEL_GROUP; | |
49224c28 BV |
535 | for (l = cg->channels; l; l = l->next) { |
536 | ch = l->data; | |
537 | if (ch->type != SR_CHANNEL_ANALOG) | |
538 | return SR_ERR_ARG; | |
539 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
540 | ag->amplitude = g_variant_get_double(data); | |
541 | } | |
dddabe37 | 542 | break; |
2388ae86 | 543 | default: |
bd6fbf62 | 544 | ret = SR_ERR_NA; |
6239c175 UH |
545 | } |
546 | ||
547 | return ret; | |
548 | } | |
549 | ||
584560f1 | 550 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 551 | const struct sr_channel_group *cg) |
a1c743fc | 552 | { |
ba7dd8bb | 553 | struct sr_channel *ch; |
d00088ca BV |
554 | GVariant *gvar; |
555 | GVariantBuilder gvb; | |
a1c743fc BV |
556 | |
557 | (void)sdi; | |
558 | ||
7a1da331 | 559 | if (key == SR_CONF_SCAN_OPTIONS) { |
584560f1 BV |
560 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
561 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
7a1da331 BV |
562 | return SR_OK; |
563 | } | |
564 | ||
390795c0 BV |
565 | if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { |
566 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
1e4a7cac | 567 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); |
390795c0 BV |
568 | return SR_OK; |
569 | } | |
570 | ||
7a1da331 BV |
571 | if (!sdi) |
572 | return SR_ERR_ARG; | |
573 | ||
53b4680f | 574 | if (!cg) { |
7a1da331 BV |
575 | switch (key) { |
576 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 | 577 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
1e4a7cac | 578 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
7a1da331 BV |
579 | break; |
580 | case SR_CONF_SAMPLERATE: | |
581 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
582 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
583 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
584 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
585 | *data = g_variant_builder_end(&gvb); | |
586 | break; | |
587 | default: | |
588 | return SR_ERR_NA; | |
589 | } | |
590 | } else { | |
49224c28 | 591 | /* Any channel in the group will do. */ |
ba7dd8bb | 592 | ch = cg->channels->data; |
7a1da331 BV |
593 | switch (key) { |
594 | case SR_CONF_DEVICE_OPTIONS: | |
49224c28 BV |
595 | if (ch->type == SR_CHANNEL_LOGIC) |
596 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
597 | devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic), | |
584560f1 | 598 | sizeof(uint32_t)); |
49224c28 BV |
599 | else if (ch->type == SR_CHANNEL_ANALOG) |
600 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
601 | devopts_cg_analog, ARRAY_SIZE(devopts_cg_analog), | |
584560f1 | 602 | sizeof(uint32_t)); |
49224c28 BV |
603 | else |
604 | return SR_ERR_BUG; | |
7a1da331 BV |
605 | break; |
606 | case SR_CONF_PATTERN_MODE: | |
3f239f08 | 607 | if (ch->type == SR_CHANNEL_LOGIC) |
7a1da331 BV |
608 | *data = g_variant_new_strv(logic_pattern_str, |
609 | ARRAY_SIZE(logic_pattern_str)); | |
3f239f08 | 610 | else if (ch->type == SR_CHANNEL_ANALOG) |
7a1da331 BV |
611 | *data = g_variant_new_strv(analog_pattern_str, |
612 | ARRAY_SIZE(analog_pattern_str)); | |
2388ae86 BV |
613 | else |
614 | return SR_ERR_BUG; | |
7a1da331 BV |
615 | break; |
616 | default: | |
617 | return SR_ERR_NA; | |
618 | } | |
a1c743fc BV |
619 | } |
620 | ||
621 | return SR_OK; | |
622 | } | |
623 | ||
c07f60e7 | 624 | static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) |
85b5af06 | 625 | { |
61c39f54 | 626 | struct dev_context *devc; |
c07f60e7 BV |
627 | uint64_t i, j; |
628 | uint8_t pat; | |
85b5af06 | 629 | |
61c39f54 | 630 | devc = sdi->priv; |
85b5af06 | 631 | |
c07f60e7 | 632 | switch (devc->logic_pattern) { |
61c39f54 | 633 | case PATTERN_SIGROK: |
c07f60e7 BV |
634 | memset(devc->logic_data, 0x00, size); |
635 | for (i = 0; i < size; i += devc->logic_unitsize) { | |
636 | for (j = 0; j < devc->logic_unitsize; j++) { | |
637 | pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; | |
638 | devc->logic_data[i + j] = ~pat; | |
639 | } | |
640 | devc->step++; | |
917e0e71 BV |
641 | } |
642 | break; | |
61c39f54 | 643 | case PATTERN_RANDOM: |
5096c6a6 | 644 | for (i = 0; i < size; i++) |
61c39f54 | 645 | devc->logic_data[i] = (uint8_t)(rand() & 0xff); |
85b5af06 | 646 | break; |
61c39f54 | 647 | case PATTERN_INC: |
c07f60e7 BV |
648 | for (i = 0; i < size; i++) { |
649 | for (j = 0; j < devc->logic_unitsize; j++) { | |
650 | devc->logic_data[i + j] = devc->step; | |
651 | } | |
652 | devc->step++; | |
653 | } | |
c03ed397 | 654 | break; |
61c39f54 BV |
655 | case PATTERN_ALL_LOW: |
656 | case PATTERN_ALL_HIGH: | |
657 | /* These were set when the pattern mode was selected. */ | |
c03ed397 UH |
658 | break; |
659 | default: | |
c07f60e7 | 660 | sr_err("Unknown pattern: %d.", devc->logic_pattern); |
c03ed397 | 661 | break; |
85b5af06 UH |
662 | } |
663 | } | |
664 | ||
85b5af06 | 665 | /* Callback handling data */ |
61c39f54 | 666 | static int prepare_data(int fd, int revents, void *cb_data) |
85b5af06 | 667 | { |
61c39f54 BV |
668 | struct sr_dev_inst *sdi; |
669 | struct dev_context *devc; | |
b9c735a2 | 670 | struct sr_datafeed_packet packet; |
9c939c51 | 671 | struct sr_datafeed_logic logic; |
8b2d41ed | 672 | struct analog_gen *ag; |
62f155f0 | 673 | int ag_pattern_pos; |
49224c28 BV |
674 | GHashTableIter iter; |
675 | void *value; | |
b62bb97a | 676 | uint64_t logic_todo, analog_todo, expected_samplenum, analog_sent, sending_now; |
3b203673 | 677 | int64_t time, elapsed; |
1924f59f | 678 | |
cb93f8a9 UH |
679 | (void)fd; |
680 | (void)revents; | |
1924f59f | 681 | |
61c39f54 BV |
682 | sdi = cb_data; |
683 | devc = sdi->priv; | |
b62bb97a | 684 | logic_todo = analog_todo = 0; |
61c39f54 | 685 | |
b62bb97a | 686 | /* How many samples should we have sent by now? */ |
3b203673 AG |
687 | time = g_get_monotonic_time(); |
688 | elapsed = time - devc->starttime; | |
a7684294 | 689 | expected_samplenum = elapsed * devc->cur_samplerate / 1000000; |
7f4975b4 | 690 | |
b62bb97a BV |
691 | /* But never more than the limit, if there is one. */ |
692 | if (!devc->continuous) | |
693 | expected_samplenum = MIN(expected_samplenum, devc->limit_samples); | |
694 | ||
3b203673 | 695 | /* Of those, how many do we still have to send? */ |
b62bb97a BV |
696 | if (devc->num_logic_channels) |
697 | logic_todo = expected_samplenum - devc->logic_counter; | |
698 | if (devc->num_analog_channels) | |
699 | analog_todo = expected_samplenum - devc->analog_counter; | |
85b5af06 | 700 | |
7f4975b4 | 701 | while (logic_todo || analog_todo) { |
c07f60e7 | 702 | /* Logic */ |
b62bb97a BV |
703 | if (logic_todo > 0) { |
704 | sending_now = MIN(logic_todo, LOGIC_BUFSIZE / devc->logic_unitsize); | |
8b2d41ed BV |
705 | logic_generator(sdi, sending_now * devc->logic_unitsize); |
706 | packet.type = SR_DF_LOGIC; | |
707 | packet.payload = &logic; | |
708 | logic.length = sending_now * devc->logic_unitsize; | |
709 | logic.unitsize = devc->logic_unitsize; | |
710 | logic.data = devc->logic_data; | |
711 | sr_session_send(sdi, &packet); | |
7f4975b4 BV |
712 | logic_todo -= sending_now; |
713 | devc->logic_counter += sending_now; | |
8b2d41ed BV |
714 | } |
715 | ||
ba7dd8bb | 716 | /* Analog, one channel at a time */ |
b62bb97a BV |
717 | if (analog_todo > 0) { |
718 | analog_sent = 0; | |
49224c28 BV |
719 | |
720 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
721 | while (g_hash_table_iter_next(&iter, NULL, &value)) { | |
722 | ag = value; | |
8b2d41ed BV |
723 | packet.type = SR_DF_ANALOG; |
724 | packet.payload = &ag->packet; | |
62f155f0 AJ |
725 | ag_pattern_pos = devc->analog_counter % ag->num_samples; |
726 | sending_now = MIN(analog_todo, ag->num_samples-ag_pattern_pos); | |
727 | ag->packet.data = ag->pattern_data + ag_pattern_pos; | |
b62bb97a | 728 | ag->packet.num_samples = sending_now; |
8b2d41ed | 729 | sr_session_send(sdi, &packet); |
b62bb97a BV |
730 | |
731 | /* Whichever channel group gets there first. */ | |
732 | analog_sent = MAX(analog_sent, sending_now); | |
8b2d41ed | 733 | } |
b62bb97a BV |
734 | analog_todo -= analog_sent; |
735 | devc->analog_counter += analog_sent; | |
8b2d41ed | 736 | } |
3b203673 AG |
737 | } |
738 | ||
b62bb97a BV |
739 | if (!devc->continuous |
740 | && (!devc->num_logic_channels || devc->logic_counter >= devc->limit_samples) | |
741 | && (!devc->num_analog_channels || devc->analog_counter >= devc->limit_samples)) { | |
7f4975b4 | 742 | sr_dbg("Requested number of samples reached."); |
61c39f54 | 743 | dev_acquisition_stop(sdi, cb_data); |
c216d623 | 744 | return TRUE; |
85b5af06 | 745 | } |
1924f59f | 746 | |
85b5af06 UH |
747 | return TRUE; |
748 | } | |
749 | ||
6078d2c9 | 750 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 751 | { |
61c39f54 | 752 | struct dev_context *devc; |
49224c28 BV |
753 | GHashTableIter iter; |
754 | void *value; | |
85b5af06 | 755 | |
102f1239 BV |
756 | (void)cb_data; |
757 | ||
e73ffd42 BV |
758 | if (sdi->status != SR_ST_ACTIVE) |
759 | return SR_ERR_DEV_CLOSED; | |
760 | ||
61c39f54 | 761 | devc = sdi->priv; |
b62bb97a | 762 | devc->continuous = !devc->limit_samples; |
7f4975b4 | 763 | devc->logic_counter = devc->analog_counter = 0; |
85b5af06 | 764 | |
3b203673 AG |
765 | /* |
766 | * Setting two channels connected by a pipe is a remnant from when the | |
767 | * demo driver generated data in a thread, and collected and sent the | |
768 | * data in the main program loop. | |
769 | * They are kept here because it provides a convenient way of setting | |
770 | * up a timeout-based polling mechanism. | |
771 | */ | |
b4750a3a | 772 | if (pipe(devc->pipe_fds)) { |
92bcedf6 | 773 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 774 | return SR_ERR; |
c03ed397 | 775 | } |
85b5af06 | 776 | |
49224c28 BV |
777 | g_hash_table_iter_init(&iter, devc->ch_ag); |
778 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
779 | generate_analog_pattern(value, devc->cur_samplerate); | |
4374219b | 780 | |
e0532047 | 781 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); |
e0532047 | 782 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 783 | |
d35aaf02 | 784 | /* Set channel encoding to binary (default is UTF-8). */ |
e0532047 | 785 | g_io_channel_set_encoding(devc->channel, NULL, NULL); |
d35aaf02 | 786 | |
b62bb97a | 787 | /* Make channels unbuffered. */ |
e0532047 | 788 | g_io_channel_set_buffered(devc->channel, FALSE); |
d35aaf02 | 789 | |
b62bb97a BV |
790 | sr_session_source_add_channel(sdi->session, devc->channel, |
791 | G_IO_IN | G_IO_ERR, 40, prepare_data, (void *)sdi); | |
85b5af06 | 792 | |
4afdfd46 | 793 | /* Send header packet to the session bus. */ |
102f1239 | 794 | std_session_send_df_header(sdi, LOG_PREFIX); |
f366e86c | 795 | |
3b203673 AG |
796 | /* We use this timestamp to decide how many more samples to send. */ |
797 | devc->starttime = g_get_monotonic_time(); | |
798 | ||
e46b8fb1 | 799 | return SR_OK; |
6239c175 UH |
800 | } |
801 | ||
6078d2c9 | 802 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 803 | { |
8b2d41ed | 804 | struct dev_context *devc; |
c216d623 | 805 | struct sr_datafeed_packet packet; |
7fd3e859 | 806 | |
33ef7573 | 807 | (void)cb_data; |
7fd3e859 | 808 | |
8b2d41ed | 809 | devc = sdi->priv; |
a84f6ad3 | 810 | sr_dbg("Stopping acquisition."); |
49145a63 | 811 | |
102f1239 | 812 | sr_session_source_remove_channel(sdi->session, devc->channel); |
e0532047 | 813 | g_io_channel_shutdown(devc->channel, FALSE, NULL); |
2150a69b JH |
814 | g_io_channel_unref(devc->channel); |
815 | devc->channel = NULL; | |
c216d623 AG |
816 | |
817 | /* Send last packet. */ | |
818 | packet.type = SR_DF_END; | |
c07f60e7 | 819 | sr_session_send(sdi, &packet); |
7fd3e859 | 820 | |
3010f21c | 821 | return SR_OK; |
6239c175 UH |
822 | } |
823 | ||
c09f0b57 | 824 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
825 | .name = "demo", |
826 | .longname = "Demo driver and pattern generator", | |
827 | .api_version = 1, | |
6078d2c9 UH |
828 | .init = init, |
829 | .cleanup = cleanup, | |
830 | .scan = scan, | |
831 | .dev_list = dev_list, | |
a6630742 | 832 | .dev_clear = NULL, |
035a1078 BV |
833 | .config_get = config_get, |
834 | .config_set = config_set, | |
a1c743fc | 835 | .config_list = config_list, |
6078d2c9 UH |
836 | .dev_open = dev_open, |
837 | .dev_close = dev_close, | |
838 | .dev_acquisition_start = dev_acquisition_start, | |
839 | .dev_acquisition_stop = dev_acquisition_stop, | |
b4750a3a | 840 | .priv = NULL, |
6239c175 | 841 | }; |