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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 | ||
584560f1 | 131 | static const uint32_t scanopts[] = { |
3f239f08 UH |
132 | SR_CONF_NUM_LOGIC_CHANNELS, |
133 | SR_CONF_NUM_ANALOG_CHANNELS, | |
e15f48c2 | 134 | }; |
85b5af06 | 135 | |
7a1da331 | 136 | static const int devopts[] = { |
1953564a BV |
137 | SR_CONF_LOGIC_ANALYZER, |
138 | SR_CONF_DEMO_DEV, | |
139 | SR_CONF_SAMPLERATE, | |
b62bb97a | 140 | SR_CONF_CONTINUOUS, |
1953564a BV |
141 | SR_CONF_LIMIT_SAMPLES, |
142 | SR_CONF_LIMIT_MSEC, | |
6239c175 UH |
143 | }; |
144 | ||
49224c28 BV |
145 | static const int devopts_cg_logic[] = { |
146 | SR_CONF_PATTERN_MODE, | |
147 | }; | |
148 | ||
149 | static const int devopts_cg_analog[] = { | |
7a1da331 | 150 | SR_CONF_PATTERN_MODE, |
dddabe37 | 151 | SR_CONF_AMPLITUDE, |
7a1da331 BV |
152 | }; |
153 | ||
d00088ca BV |
154 | static const uint64_t samplerates[] = { |
155 | SR_HZ(1), | |
156 | SR_GHZ(1), | |
157 | SR_HZ(1), | |
4bfbf9fc BV |
158 | }; |
159 | ||
c8f4624d | 160 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
161 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
162 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
163 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
164 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
165 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
166 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
167 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
168 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
169 | }; | |
170 | ||
dcf03d6d | 171 | SR_PRIV struct sr_dev_driver demo_driver_info; |
a873c594 | 172 | static struct sr_dev_driver *di = &demo_driver_info; |
6239c175 | 173 | |
6078d2c9 | 174 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 175 | |
c07f60e7 | 176 | |
6078d2c9 | 177 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 178 | { |
f6beaac5 | 179 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
180 | } |
181 | ||
49224c28 | 182 | static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate) |
8b2d41ed | 183 | { |
4374219b | 184 | double t, frequency; |
8b2d41ed BV |
185 | float value; |
186 | unsigned int num_samples, i; | |
187 | int last_end; | |
188 | ||
49224c28 | 189 | sr_dbg("Generating %s pattern.", analog_pattern_str[ag->pattern]); |
4374219b | 190 | |
49224c28 | 191 | num_samples = ANALOG_BUFSIZE / sizeof(float); |
8b2d41ed | 192 | |
4374219b | 193 | switch (ag->pattern) { |
8b2d41ed | 194 | case PATTERN_SQUARE: |
dddabe37 | 195 | value = ag->amplitude; |
8b2d41ed BV |
196 | last_end = 0; |
197 | for (i = 0; i < num_samples; i++) { | |
198 | if (i % 5 == 0) | |
199 | value = -value; | |
200 | if (i % 10 == 0) | |
201 | last_end = i - 1; | |
202 | ag->pattern_data[i] = value; | |
203 | } | |
204 | ag->num_samples = last_end; | |
205 | break; | |
4374219b DJ |
206 | |
207 | case PATTERN_SINE: | |
9d156555 | 208 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
4374219b DJ |
209 | |
210 | /* Make sure the number of samples we put out is an integer | |
211 | * multiple of our period size */ | |
212 | /* FIXME we actually need only one period. A ringbuffer would be | |
213 | * usefull here.*/ | |
214 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
215 | num_samples--; | |
216 | ||
217 | for (i = 0; i < num_samples; i++) { | |
218 | t = (double) i / (double) sample_rate; | |
dddabe37 | 219 | ag->pattern_data[i] = ag->amplitude * |
4374219b DJ |
220 | sin(2 * M_PI * frequency * t); |
221 | } | |
222 | ||
091c9621 DJ |
223 | ag->num_samples = num_samples; |
224 | break; | |
225 | ||
226 | case PATTERN_TRIANGLE: | |
9d156555 | 227 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
091c9621 DJ |
228 | |
229 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
230 | num_samples--; | |
231 | ||
232 | for (i = 0; i < num_samples; i++) { | |
233 | t = (double) i / (double) sample_rate; | |
dddabe37 | 234 | ag->pattern_data[i] = (2 * ag->amplitude / M_PI) * |
091c9621 DJ |
235 | asin(sin(2 * M_PI * frequency * t)); |
236 | } | |
237 | ||
9f54e0e8 DJ |
238 | ag->num_samples = num_samples; |
239 | break; | |
240 | ||
241 | case PATTERN_SAWTOOTH: | |
9d156555 | 242 | frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; |
9f54e0e8 DJ |
243 | |
244 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
245 | num_samples--; | |
246 | ||
247 | for (i = 0; i < num_samples; i++) { | |
248 | t = (double) i / (double) sample_rate; | |
dddabe37 | 249 | ag->pattern_data[i] = 2 * ag->amplitude * |
9f54e0e8 DJ |
250 | ((t * frequency) - floor(0.5f + t * frequency)); |
251 | } | |
252 | ||
4374219b DJ |
253 | ag->num_samples = num_samples; |
254 | break; | |
8b2d41ed BV |
255 | } |
256 | } | |
257 | ||
6078d2c9 | 258 | static GSList *scan(GSList *options) |
6239c175 | 259 | { |
b4750a3a | 260 | struct drv_context *drvc; |
33ef7573 | 261 | struct dev_context *devc; |
c07f60e7 | 262 | struct sr_dev_inst *sdi; |
ba7dd8bb | 263 | struct sr_channel *ch; |
49224c28 | 264 | struct sr_channel_group *cg, *acg; |
c07f60e7 | 265 | struct sr_config *src; |
8b2d41ed | 266 | struct analog_gen *ag; |
c07f60e7 | 267 | GSList *devices, *l; |
ba7dd8bb UH |
268 | int num_logic_channels, num_analog_channels, pattern, i; |
269 | char channel_name[16]; | |
067d0716 | 270 | |
a873c594 | 271 | drvc = di->priv; |
4b97c74e | 272 | |
3f239f08 UH |
273 | num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS; |
274 | num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS; | |
c07f60e7 BV |
275 | for (l = options; l; l = l->next) { |
276 | src = l->data; | |
277 | switch (src->key) { | |
3f239f08 | 278 | case SR_CONF_NUM_LOGIC_CHANNELS: |
ba7dd8bb | 279 | num_logic_channels = g_variant_get_int32(src->data); |
c07f60e7 | 280 | break; |
3f239f08 | 281 | case SR_CONF_NUM_ANALOG_CHANNELS: |
ba7dd8bb | 282 | num_analog_channels = g_variant_get_int32(src->data); |
c07f60e7 BV |
283 | break; |
284 | } | |
285 | } | |
85b5af06 | 286 | |
c07f60e7 | 287 | devices = NULL; |
61c39f54 | 288 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Demo device", NULL, NULL); |
c03ed397 | 289 | if (!sdi) { |
e45ad6e2 UH |
290 | sr_err("Device instance creation failed."); |
291 | return NULL; | |
c03ed397 | 292 | } |
a873c594 | 293 | sdi->driver = di; |
e15f48c2 | 294 | |
49224c28 | 295 | devc = g_malloc(sizeof(struct dev_context)); |
8b2d41ed BV |
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; |
8b2d41ed | 305 | |
ba7dd8bb | 306 | /* Logic channels, all in one channel group. */ |
49224c28 | 307 | cg = g_malloc0(sizeof(struct sr_channel_group)); |
40fd0264 | 308 | cg->name = g_strdup("Logic"); |
ba7dd8bb UH |
309 | for (i = 0; i < num_logic_channels; i++) { |
310 | sprintf(channel_name, "D%d", i); | |
3f239f08 | 311 | if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, channel_name))) |
87ca93c5 | 312 | return NULL; |
ba7dd8bb UH |
313 | sdi->channels = g_slist_append(sdi->channels, ch); |
314 | cg->channels = g_slist_append(cg->channels, ch); | |
87ca93c5 | 315 | } |
40fd0264 | 316 | sdi->channel_groups = g_slist_append(NULL, cg); |
87ca93c5 | 317 | |
ba7dd8bb | 318 | /* Analog channels, channel groups and pattern generators. */ |
2b36d6c6 | 319 | pattern = 0; |
49224c28 BV |
320 | /* An "Analog" channel group with all analog channels in it. */ |
321 | acg = g_malloc0(sizeof(struct sr_channel_group)); | |
322 | acg->name = g_strdup("Analog"); | |
323 | sdi->channel_groups = g_slist_append(sdi->channel_groups, acg); | |
324 | ||
325 | devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal); | |
ba7dd8bb | 326 | for (i = 0; i < num_analog_channels; i++) { |
49224c28 BV |
327 | snprintf(channel_name, 16, "A%d", i); |
328 | ch = sr_channel_new(i + num_logic_channels, SR_CHANNEL_ANALOG, | |
329 | TRUE, channel_name); | |
ba7dd8bb | 330 | sdi->channels = g_slist_append(sdi->channels, ch); |
49224c28 | 331 | acg->channels = g_slist_append(acg->channels, ch); |
c07f60e7 | 332 | |
49224c28 BV |
333 | /* Every analog channel gets its own channel group as well. */ |
334 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
ba7dd8bb UH |
335 | cg->name = g_strdup(channel_name); |
336 | cg->channels = g_slist_append(NULL, ch); | |
49224c28 | 337 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); |
85b5af06 | 338 | |
49224c28 BV |
339 | /* Every channel gets a generator struct. */ |
340 | ag = g_malloc(sizeof(struct analog_gen)); | |
dddabe37 | 341 | ag->amplitude = DEFAULT_ANALOG_AMPLITUDE; |
ba7dd8bb | 342 | ag->packet.channels = cg->channels; |
8b2d41ed BV |
343 | ag->packet.mq = 0; |
344 | ag->packet.mqflags = 0; | |
345 | ag->packet.unit = SR_UNIT_VOLT; | |
346 | ag->packet.data = ag->pattern_data; | |
2b36d6c6 | 347 | ag->pattern = pattern; |
49224c28 | 348 | g_hash_table_insert(devc->ch_ag, ch, ag); |
2b36d6c6 BV |
349 | |
350 | if (++pattern == ARRAY_SIZE(analog_pattern_str)) | |
351 | pattern = 0; | |
33ef7573 | 352 | } |
33ef7573 JH |
353 | |
354 | sdi->priv = devc; | |
8b2d41ed BV |
355 | devices = g_slist_append(devices, sdi); |
356 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
33ef7573 | 357 | |
067d0716 | 358 | return devices; |
6239c175 UH |
359 | } |
360 | ||
6078d2c9 | 361 | static GSList *dev_list(void) |
811deee4 | 362 | { |
0e94d524 | 363 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
364 | } |
365 | ||
6078d2c9 | 366 | static int dev_open(struct sr_dev_inst *sdi) |
6239c175 | 367 | { |
e73ffd42 | 368 | sdi->status = SR_ST_ACTIVE; |
697785d1 | 369 | |
e46b8fb1 | 370 | return SR_OK; |
6239c175 UH |
371 | } |
372 | ||
6078d2c9 | 373 | static int dev_close(struct sr_dev_inst *sdi) |
6239c175 | 374 | { |
decfe89d | 375 | sdi->status = SR_ST_INACTIVE; |
697785d1 UH |
376 | |
377 | return SR_OK; | |
6239c175 UH |
378 | } |
379 | ||
ed0b7fed BV |
380 | static void clear_helper(void *priv) |
381 | { | |
382 | struct dev_context *devc; | |
49224c28 BV |
383 | GHashTableIter iter; |
384 | void *value; | |
ed0b7fed BV |
385 | |
386 | devc = priv; | |
49224c28 BV |
387 | |
388 | /* Analog generators. */ | |
389 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
390 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
391 | g_free(value); | |
392 | g_hash_table_unref(devc->ch_ag); | |
ed0b7fed BV |
393 | g_free(devc); |
394 | } | |
395 | ||
6078d2c9 | 396 | static int cleanup(void) |
6239c175 | 397 | { |
ed0b7fed | 398 | return std_dev_clear(di, clear_helper); |
6239c175 UH |
399 | } |
400 | ||
584560f1 | 401 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 402 | const struct sr_channel_group *cg) |
6239c175 | 403 | { |
c07f60e7 | 404 | struct dev_context *devc; |
ba7dd8bb | 405 | struct sr_channel *ch; |
2388ae86 BV |
406 | struct analog_gen *ag; |
407 | int pattern; | |
6f57fd96 | 408 | |
2388ae86 BV |
409 | if (!sdi) |
410 | return SR_ERR_ARG; | |
8f996b89 | 411 | |
c07f60e7 | 412 | devc = sdi->priv; |
584560f1 | 413 | switch (key) { |
123e1313 | 414 | case SR_CONF_SAMPLERATE: |
a7684294 | 415 | *data = g_variant_new_uint64(devc->cur_samplerate); |
6239c175 | 416 | break; |
2474d87e | 417 | case SR_CONF_LIMIT_SAMPLES: |
a7684294 | 418 | *data = g_variant_new_uint64(devc->limit_samples); |
2474d87e BV |
419 | break; |
420 | case SR_CONF_LIMIT_MSEC: | |
a7684294 | 421 | *data = g_variant_new_uint64(devc->limit_msec); |
2474d87e BV |
422 | break; |
423 | case SR_CONF_PATTERN_MODE: | |
53b4680f | 424 | if (!cg) |
660e398f | 425 | return SR_ERR_CHANNEL_GROUP; |
49224c28 | 426 | /* Any channel in the group will do. */ |
ba7dd8bb | 427 | ch = cg->channels->data; |
3f239f08 | 428 | if (ch->type == SR_CHANNEL_LOGIC) { |
2388ae86 BV |
429 | pattern = devc->logic_pattern; |
430 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
3f239f08 | 431 | } else if (ch->type == SR_CHANNEL_ANALOG) { |
49224c28 | 432 | ag = g_hash_table_lookup(devc->ch_ag, ch); |
2388ae86 BV |
433 | pattern = ag->pattern; |
434 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
435 | } else | |
436 | return SR_ERR_BUG; | |
c07f60e7 | 437 | break; |
3f239f08 | 438 | case SR_CONF_NUM_LOGIC_CHANNELS: |
ba7dd8bb | 439 | *data = g_variant_new_int32(devc->num_logic_channels); |
c07f60e7 | 440 | break; |
3f239f08 | 441 | case SR_CONF_NUM_ANALOG_CHANNELS: |
ba7dd8bb | 442 | *data = g_variant_new_int32(devc->num_analog_channels); |
2474d87e | 443 | break; |
dddabe37 BV |
444 | case SR_CONF_AMPLITUDE: |
445 | if (!cg) | |
446 | return SR_ERR_CHANNEL_GROUP; | |
49224c28 | 447 | /* Any channel in the group will do. */ |
dddabe37 BV |
448 | ch = cg->channels->data; |
449 | if (ch->type != SR_CHANNEL_ANALOG) | |
450 | return SR_ERR_ARG; | |
49224c28 | 451 | ag = g_hash_table_lookup(devc->ch_ag, ch); |
dddabe37 BV |
452 | *data = g_variant_new_double(ag->amplitude); |
453 | break; | |
7dfcf010 | 454 | default: |
bd6fbf62 | 455 | return SR_ERR_NA; |
6239c175 UH |
456 | } |
457 | ||
dfb0fa1a | 458 | return SR_OK; |
6239c175 UH |
459 | } |
460 | ||
584560f1 | 461 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 462 | const struct sr_channel_group *cg) |
6239c175 | 463 | { |
8b2d41ed | 464 | struct dev_context *devc; |
4374219b | 465 | struct analog_gen *ag; |
ba7dd8bb | 466 | struct sr_channel *ch; |
49224c28 BV |
467 | GSList *l; |
468 | int logic_pattern, analog_pattern, ret; | |
61c39f54 | 469 | unsigned int i; |
1b79df2f | 470 | const char *stropt; |
6239c175 | 471 | |
8b2d41ed | 472 | devc = sdi->priv; |
6239c175 | 473 | |
e73ffd42 BV |
474 | if (sdi->status != SR_ST_ACTIVE) |
475 | return SR_ERR_DEV_CLOSED; | |
476 | ||
2388ae86 | 477 | ret = SR_OK; |
584560f1 | 478 | switch (key) { |
2388ae86 | 479 | case SR_CONF_SAMPLERATE: |
a7684294 | 480 | devc->cur_samplerate = g_variant_get_uint64(data); |
61c39f54 | 481 | sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); |
2388ae86 BV |
482 | break; |
483 | case SR_CONF_LIMIT_SAMPLES: | |
a7684294 JH |
484 | devc->limit_msec = 0; |
485 | devc->limit_samples = g_variant_get_uint64(data); | |
8b2d41ed | 486 | sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); |
2388ae86 BV |
487 | break; |
488 | case SR_CONF_LIMIT_MSEC: | |
a7684294 JH |
489 | devc->limit_msec = g_variant_get_uint64(data); |
490 | devc->limit_samples = 0; | |
8b2d41ed | 491 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); |
2388ae86 BV |
492 | break; |
493 | case SR_CONF_PATTERN_MODE: | |
53b4680f | 494 | if (!cg) |
660e398f | 495 | return SR_ERR_CHANNEL_GROUP; |
d00088ca | 496 | stropt = g_variant_get_string(data, NULL); |
ba7dd8bb | 497 | ch = cg->channels->data; |
49224c28 BV |
498 | logic_pattern = analog_pattern = -1; |
499 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { | |
500 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
501 | logic_pattern = i; | |
502 | break; | |
8b2d41ed | 503 | } |
49224c28 BV |
504 | } |
505 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { | |
506 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
507 | analog_pattern = i; | |
508 | break; | |
8b2d41ed | 509 | } |
49224c28 BV |
510 | } |
511 | if (logic_pattern == -1 && analog_pattern == -1) | |
512 | return SR_ERR_ARG; | |
513 | for (l = cg->channels; l; l = l->next) { | |
514 | ch = l->data; | |
515 | if (ch->type == SR_CHANNEL_LOGIC) { | |
516 | if (logic_pattern == -1) | |
517 | return SR_ERR_ARG; | |
518 | sr_dbg("Setting logic pattern to %s", | |
519 | logic_pattern_str[logic_pattern]); | |
520 | devc->logic_pattern = logic_pattern; | |
521 | /* Might as well do this now, these are static. */ | |
522 | if (logic_pattern == PATTERN_ALL_LOW) | |
523 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); | |
524 | else if (logic_pattern == PATTERN_ALL_HIGH) | |
525 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); | |
526 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
527 | if (analog_pattern == -1) | |
528 | return SR_ERR_ARG; | |
529 | sr_dbg("Setting analog pattern for channel %s to %s", | |
530 | ch->name, analog_pattern_str[analog_pattern]); | |
531 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
532 | ag->pattern = analog_pattern; | |
533 | } else | |
534 | return SR_ERR_BUG; | |
535 | } | |
2388ae86 | 536 | break; |
dddabe37 BV |
537 | case SR_CONF_AMPLITUDE: |
538 | if (!cg) | |
539 | return SR_ERR_CHANNEL_GROUP; | |
49224c28 BV |
540 | for (l = cg->channels; l; l = l->next) { |
541 | ch = l->data; | |
542 | if (ch->type != SR_CHANNEL_ANALOG) | |
543 | return SR_ERR_ARG; | |
544 | ag = g_hash_table_lookup(devc->ch_ag, ch); | |
545 | ag->amplitude = g_variant_get_double(data); | |
546 | } | |
dddabe37 | 547 | break; |
2388ae86 | 548 | default: |
bd6fbf62 | 549 | ret = SR_ERR_NA; |
6239c175 UH |
550 | } |
551 | ||
552 | return ret; | |
553 | } | |
554 | ||
584560f1 | 555 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 556 | const struct sr_channel_group *cg) |
a1c743fc | 557 | { |
ba7dd8bb | 558 | struct sr_channel *ch; |
d00088ca BV |
559 | GVariant *gvar; |
560 | GVariantBuilder gvb; | |
a1c743fc BV |
561 | |
562 | (void)sdi; | |
563 | ||
7a1da331 | 564 | if (key == SR_CONF_SCAN_OPTIONS) { |
584560f1 BV |
565 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
566 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
7a1da331 BV |
567 | return SR_OK; |
568 | } | |
569 | ||
570 | if (!sdi) | |
571 | return SR_ERR_ARG; | |
572 | ||
53b4680f | 573 | if (!cg) { |
7a1da331 BV |
574 | switch (key) { |
575 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 BV |
576 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
577 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
7a1da331 BV |
578 | break; |
579 | case SR_CONF_SAMPLERATE: | |
580 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
581 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
582 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
583 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
584 | *data = g_variant_builder_end(&gvb); | |
585 | break; | |
586 | default: | |
587 | return SR_ERR_NA; | |
588 | } | |
589 | } else { | |
49224c28 | 590 | /* Any channel in the group will do. */ |
ba7dd8bb | 591 | ch = cg->channels->data; |
7a1da331 BV |
592 | switch (key) { |
593 | case SR_CONF_DEVICE_OPTIONS: | |
49224c28 BV |
594 | if (ch->type == SR_CHANNEL_LOGIC) |
595 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
596 | devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic), | |
584560f1 | 597 | sizeof(uint32_t)); |
49224c28 BV |
598 | else if (ch->type == SR_CHANNEL_ANALOG) |
599 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
600 | devopts_cg_analog, ARRAY_SIZE(devopts_cg_analog), | |
584560f1 | 601 | sizeof(uint32_t)); |
49224c28 BV |
602 | else |
603 | return SR_ERR_BUG; | |
7a1da331 BV |
604 | break; |
605 | case SR_CONF_PATTERN_MODE: | |
3f239f08 | 606 | if (ch->type == SR_CHANNEL_LOGIC) |
7a1da331 BV |
607 | *data = g_variant_new_strv(logic_pattern_str, |
608 | ARRAY_SIZE(logic_pattern_str)); | |
3f239f08 | 609 | else if (ch->type == SR_CHANNEL_ANALOG) |
7a1da331 BV |
610 | *data = g_variant_new_strv(analog_pattern_str, |
611 | ARRAY_SIZE(analog_pattern_str)); | |
2388ae86 BV |
612 | else |
613 | return SR_ERR_BUG; | |
7a1da331 BV |
614 | break; |
615 | default: | |
616 | return SR_ERR_NA; | |
617 | } | |
a1c743fc BV |
618 | } |
619 | ||
620 | return SR_OK; | |
621 | } | |
622 | ||
c07f60e7 | 623 | static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) |
85b5af06 | 624 | { |
61c39f54 | 625 | struct dev_context *devc; |
c07f60e7 BV |
626 | uint64_t i, j; |
627 | uint8_t pat; | |
85b5af06 | 628 | |
61c39f54 | 629 | devc = sdi->priv; |
85b5af06 | 630 | |
c07f60e7 | 631 | switch (devc->logic_pattern) { |
61c39f54 | 632 | case PATTERN_SIGROK: |
c07f60e7 BV |
633 | memset(devc->logic_data, 0x00, size); |
634 | for (i = 0; i < size; i += devc->logic_unitsize) { | |
635 | for (j = 0; j < devc->logic_unitsize; j++) { | |
636 | pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; | |
637 | devc->logic_data[i + j] = ~pat; | |
638 | } | |
639 | devc->step++; | |
917e0e71 BV |
640 | } |
641 | break; | |
61c39f54 | 642 | case PATTERN_RANDOM: |
5096c6a6 | 643 | for (i = 0; i < size; i++) |
61c39f54 | 644 | devc->logic_data[i] = (uint8_t)(rand() & 0xff); |
85b5af06 | 645 | break; |
61c39f54 | 646 | case PATTERN_INC: |
c07f60e7 BV |
647 | for (i = 0; i < size; i++) { |
648 | for (j = 0; j < devc->logic_unitsize; j++) { | |
649 | devc->logic_data[i + j] = devc->step; | |
650 | } | |
651 | devc->step++; | |
652 | } | |
c03ed397 | 653 | break; |
61c39f54 BV |
654 | case PATTERN_ALL_LOW: |
655 | case PATTERN_ALL_HIGH: | |
656 | /* These were set when the pattern mode was selected. */ | |
c03ed397 UH |
657 | break; |
658 | default: | |
c07f60e7 | 659 | sr_err("Unknown pattern: %d.", devc->logic_pattern); |
c03ed397 | 660 | break; |
85b5af06 UH |
661 | } |
662 | } | |
663 | ||
85b5af06 | 664 | /* Callback handling data */ |
61c39f54 | 665 | static int prepare_data(int fd, int revents, void *cb_data) |
85b5af06 | 666 | { |
61c39f54 BV |
667 | struct sr_dev_inst *sdi; |
668 | struct dev_context *devc; | |
b9c735a2 | 669 | struct sr_datafeed_packet packet; |
9c939c51 | 670 | struct sr_datafeed_logic logic; |
8b2d41ed | 671 | struct analog_gen *ag; |
49224c28 BV |
672 | GHashTableIter iter; |
673 | void *value; | |
b62bb97a | 674 | uint64_t logic_todo, analog_todo, expected_samplenum, analog_sent, sending_now; |
3b203673 | 675 | int64_t time, elapsed; |
1924f59f | 676 | |
cb93f8a9 UH |
677 | (void)fd; |
678 | (void)revents; | |
1924f59f | 679 | |
61c39f54 BV |
680 | sdi = cb_data; |
681 | devc = sdi->priv; | |
b62bb97a | 682 | logic_todo = analog_todo = 0; |
61c39f54 | 683 | |
b62bb97a | 684 | /* How many samples should we have sent by now? */ |
3b203673 AG |
685 | time = g_get_monotonic_time(); |
686 | elapsed = time - devc->starttime; | |
a7684294 | 687 | expected_samplenum = elapsed * devc->cur_samplerate / 1000000; |
7f4975b4 | 688 | |
b62bb97a BV |
689 | /* But never more than the limit, if there is one. */ |
690 | if (!devc->continuous) | |
691 | expected_samplenum = MIN(expected_samplenum, devc->limit_samples); | |
692 | ||
3b203673 | 693 | /* Of those, how many do we still have to send? */ |
b62bb97a BV |
694 | if (devc->num_logic_channels) |
695 | logic_todo = expected_samplenum - devc->logic_counter; | |
696 | if (devc->num_analog_channels) | |
697 | analog_todo = expected_samplenum - devc->analog_counter; | |
85b5af06 | 698 | |
7f4975b4 | 699 | while (logic_todo || analog_todo) { |
c07f60e7 | 700 | /* Logic */ |
b62bb97a BV |
701 | if (logic_todo > 0) { |
702 | sending_now = MIN(logic_todo, LOGIC_BUFSIZE / devc->logic_unitsize); | |
8b2d41ed BV |
703 | logic_generator(sdi, sending_now * devc->logic_unitsize); |
704 | packet.type = SR_DF_LOGIC; | |
705 | packet.payload = &logic; | |
706 | logic.length = sending_now * devc->logic_unitsize; | |
707 | logic.unitsize = devc->logic_unitsize; | |
708 | logic.data = devc->logic_data; | |
709 | sr_session_send(sdi, &packet); | |
7f4975b4 BV |
710 | logic_todo -= sending_now; |
711 | devc->logic_counter += sending_now; | |
8b2d41ed BV |
712 | } |
713 | ||
ba7dd8bb | 714 | /* Analog, one channel at a time */ |
b62bb97a BV |
715 | if (analog_todo > 0) { |
716 | analog_sent = 0; | |
49224c28 BV |
717 | |
718 | g_hash_table_iter_init(&iter, devc->ch_ag); | |
719 | while (g_hash_table_iter_next(&iter, NULL, &value)) { | |
720 | ag = value; | |
8b2d41ed BV |
721 | packet.type = SR_DF_ANALOG; |
722 | packet.payload = &ag->packet; | |
4374219b DJ |
723 | |
724 | /* FIXME we should make sure we output a whole | |
725 | * period of data before we send out again the | |
726 | * beginning of our buffer. A ring buffer would | |
727 | * help here as well */ | |
728 | ||
b62bb97a BV |
729 | sending_now = MIN(analog_todo, ag->num_samples); |
730 | ag->packet.num_samples = sending_now; | |
8b2d41ed | 731 | sr_session_send(sdi, &packet); |
b62bb97a BV |
732 | |
733 | /* Whichever channel group gets there first. */ | |
734 | analog_sent = MAX(analog_sent, sending_now); | |
8b2d41ed | 735 | } |
b62bb97a BV |
736 | analog_todo -= analog_sent; |
737 | devc->analog_counter += analog_sent; | |
8b2d41ed | 738 | } |
3b203673 AG |
739 | } |
740 | ||
b62bb97a BV |
741 | if (!devc->continuous |
742 | && (!devc->num_logic_channels || devc->logic_counter >= devc->limit_samples) | |
743 | && (!devc->num_analog_channels || devc->analog_counter >= devc->limit_samples)) { | |
7f4975b4 | 744 | sr_dbg("Requested number of samples reached."); |
61c39f54 | 745 | dev_acquisition_stop(sdi, cb_data); |
c216d623 | 746 | return TRUE; |
85b5af06 | 747 | } |
1924f59f | 748 | |
85b5af06 UH |
749 | return TRUE; |
750 | } | |
751 | ||
6078d2c9 | 752 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 753 | { |
61c39f54 | 754 | struct dev_context *devc; |
49224c28 BV |
755 | GHashTableIter iter; |
756 | void *value; | |
85b5af06 | 757 | |
102f1239 BV |
758 | (void)cb_data; |
759 | ||
e73ffd42 BV |
760 | if (sdi->status != SR_ST_ACTIVE) |
761 | return SR_ERR_DEV_CLOSED; | |
762 | ||
61c39f54 | 763 | devc = sdi->priv; |
b62bb97a | 764 | devc->continuous = !devc->limit_samples; |
7f4975b4 | 765 | devc->logic_counter = devc->analog_counter = 0; |
85b5af06 | 766 | |
3b203673 AG |
767 | /* |
768 | * Setting two channels connected by a pipe is a remnant from when the | |
769 | * demo driver generated data in a thread, and collected and sent the | |
770 | * data in the main program loop. | |
771 | * They are kept here because it provides a convenient way of setting | |
772 | * up a timeout-based polling mechanism. | |
773 | */ | |
b4750a3a | 774 | if (pipe(devc->pipe_fds)) { |
92bcedf6 | 775 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 776 | return SR_ERR; |
c03ed397 | 777 | } |
85b5af06 | 778 | |
49224c28 BV |
779 | g_hash_table_iter_init(&iter, devc->ch_ag); |
780 | while (g_hash_table_iter_next(&iter, NULL, &value)) | |
781 | generate_analog_pattern(value, devc->cur_samplerate); | |
4374219b | 782 | |
e0532047 | 783 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); |
e0532047 | 784 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 785 | |
d35aaf02 | 786 | /* Set channel encoding to binary (default is UTF-8). */ |
e0532047 | 787 | g_io_channel_set_encoding(devc->channel, NULL, NULL); |
d35aaf02 | 788 | |
b62bb97a | 789 | /* Make channels unbuffered. */ |
e0532047 | 790 | g_io_channel_set_buffered(devc->channel, FALSE); |
d35aaf02 | 791 | |
b62bb97a BV |
792 | sr_session_source_add_channel(sdi->session, devc->channel, |
793 | G_IO_IN | G_IO_ERR, 40, prepare_data, (void *)sdi); | |
85b5af06 | 794 | |
4afdfd46 | 795 | /* Send header packet to the session bus. */ |
102f1239 | 796 | std_session_send_df_header(sdi, LOG_PREFIX); |
f366e86c | 797 | |
3b203673 AG |
798 | /* We use this timestamp to decide how many more samples to send. */ |
799 | devc->starttime = g_get_monotonic_time(); | |
800 | ||
e46b8fb1 | 801 | return SR_OK; |
6239c175 UH |
802 | } |
803 | ||
6078d2c9 | 804 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 805 | { |
8b2d41ed | 806 | struct dev_context *devc; |
c216d623 | 807 | struct sr_datafeed_packet packet; |
7fd3e859 | 808 | |
33ef7573 | 809 | (void)cb_data; |
7fd3e859 | 810 | |
8b2d41ed | 811 | devc = sdi->priv; |
a84f6ad3 | 812 | sr_dbg("Stopping acquisition."); |
49145a63 | 813 | |
102f1239 | 814 | sr_session_source_remove_channel(sdi->session, devc->channel); |
e0532047 | 815 | g_io_channel_shutdown(devc->channel, FALSE, NULL); |
2150a69b JH |
816 | g_io_channel_unref(devc->channel); |
817 | devc->channel = NULL; | |
c216d623 AG |
818 | |
819 | /* Send last packet. */ | |
820 | packet.type = SR_DF_END; | |
c07f60e7 | 821 | sr_session_send(sdi, &packet); |
7fd3e859 | 822 | |
3010f21c | 823 | return SR_OK; |
6239c175 UH |
824 | } |
825 | ||
c09f0b57 | 826 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
827 | .name = "demo", |
828 | .longname = "Demo driver and pattern generator", | |
829 | .api_version = 1, | |
6078d2c9 UH |
830 | .init = init, |
831 | .cleanup = cleanup, | |
832 | .scan = scan, | |
833 | .dev_list = dev_list, | |
a6630742 | 834 | .dev_clear = NULL, |
035a1078 BV |
835 | .config_get = config_get, |
836 | .config_set = config_set, | |
a1c743fc | 837 | .config_list = config_list, |
6078d2c9 UH |
838 | .dev_open = dev_open, |
839 | .dev_close = dev_close, | |
840 | .dev_acquisition_start = dev_acquisition_start, | |
841 | .dev_acquisition_stop = dev_acquisition_stop, | |
b4750a3a | 842 | .priv = NULL, |
6239c175 | 843 | }; |