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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 | ||
6078d2c9 | 382 | static int cleanup(void) |
6239c175 | 383 | { |
a6630742 | 384 | return std_dev_clear(di, NULL); |
6239c175 UH |
385 | } |
386 | ||
8f996b89 | 387 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 388 | const struct sr_channel_group *cg) |
6239c175 | 389 | { |
c07f60e7 | 390 | struct dev_context *devc; |
ba7dd8bb | 391 | struct sr_channel *ch; |
2388ae86 BV |
392 | struct analog_gen *ag; |
393 | int pattern; | |
6f57fd96 | 394 | |
2388ae86 BV |
395 | if (!sdi) |
396 | return SR_ERR_ARG; | |
8f996b89 | 397 | |
c07f60e7 | 398 | devc = sdi->priv; |
035a1078 | 399 | switch (id) { |
123e1313 | 400 | case SR_CONF_SAMPLERATE: |
a7684294 | 401 | *data = g_variant_new_uint64(devc->cur_samplerate); |
6239c175 | 402 | break; |
2474d87e | 403 | case SR_CONF_LIMIT_SAMPLES: |
a7684294 | 404 | *data = g_variant_new_uint64(devc->limit_samples); |
2474d87e BV |
405 | break; |
406 | case SR_CONF_LIMIT_MSEC: | |
a7684294 | 407 | *data = g_variant_new_uint64(devc->limit_msec); |
2474d87e BV |
408 | break; |
409 | case SR_CONF_PATTERN_MODE: | |
53b4680f | 410 | if (!cg) |
660e398f | 411 | return SR_ERR_CHANNEL_GROUP; |
ba7dd8bb | 412 | ch = cg->channels->data; |
3f239f08 | 413 | if (ch->type == SR_CHANNEL_LOGIC) { |
2388ae86 BV |
414 | pattern = devc->logic_pattern; |
415 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
3f239f08 | 416 | } else if (ch->type == SR_CHANNEL_ANALOG) { |
53b4680f | 417 | ag = cg->priv; |
2388ae86 BV |
418 | pattern = ag->pattern; |
419 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
420 | } else | |
421 | return SR_ERR_BUG; | |
c07f60e7 | 422 | break; |
3f239f08 | 423 | case SR_CONF_NUM_LOGIC_CHANNELS: |
ba7dd8bb | 424 | *data = g_variant_new_int32(devc->num_logic_channels); |
c07f60e7 | 425 | break; |
3f239f08 | 426 | case SR_CONF_NUM_ANALOG_CHANNELS: |
ba7dd8bb | 427 | *data = g_variant_new_int32(devc->num_analog_channels); |
2474d87e | 428 | break; |
7dfcf010 | 429 | default: |
bd6fbf62 | 430 | return SR_ERR_NA; |
6239c175 UH |
431 | } |
432 | ||
dfb0fa1a | 433 | return SR_OK; |
6239c175 UH |
434 | } |
435 | ||
8f996b89 | 436 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 437 | const struct sr_channel_group *cg) |
6239c175 | 438 | { |
8b2d41ed | 439 | struct dev_context *devc; |
4374219b | 440 | struct analog_gen *ag; |
ba7dd8bb | 441 | struct sr_channel *ch; |
2388ae86 | 442 | int pattern, ret; |
61c39f54 | 443 | unsigned int i; |
1b79df2f | 444 | const char *stropt; |
6239c175 | 445 | |
8b2d41ed | 446 | devc = sdi->priv; |
6239c175 | 447 | |
e73ffd42 BV |
448 | if (sdi->status != SR_ST_ACTIVE) |
449 | return SR_ERR_DEV_CLOSED; | |
450 | ||
2388ae86 BV |
451 | ret = SR_OK; |
452 | switch (id) { | |
453 | case SR_CONF_SAMPLERATE: | |
a7684294 | 454 | devc->cur_samplerate = g_variant_get_uint64(data); |
61c39f54 | 455 | sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); |
2388ae86 BV |
456 | break; |
457 | case SR_CONF_LIMIT_SAMPLES: | |
a7684294 JH |
458 | devc->limit_msec = 0; |
459 | devc->limit_samples = g_variant_get_uint64(data); | |
8b2d41ed | 460 | sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); |
2388ae86 BV |
461 | break; |
462 | case SR_CONF_LIMIT_MSEC: | |
a7684294 JH |
463 | devc->limit_msec = g_variant_get_uint64(data); |
464 | devc->limit_samples = 0; | |
8b2d41ed | 465 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); |
2388ae86 BV |
466 | break; |
467 | case SR_CONF_PATTERN_MODE: | |
53b4680f | 468 | if (!cg) |
660e398f | 469 | return SR_ERR_CHANNEL_GROUP; |
d00088ca | 470 | stropt = g_variant_get_string(data, NULL); |
ba7dd8bb | 471 | ch = cg->channels->data; |
2388ae86 | 472 | pattern = -1; |
3f239f08 | 473 | if (ch->type == SR_CHANNEL_LOGIC) { |
2388ae86 BV |
474 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { |
475 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
476 | pattern = i; | |
8b2d41ed BV |
477 | break; |
478 | } | |
479 | } | |
2388ae86 BV |
480 | if (pattern == -1) |
481 | return SR_ERR_ARG; | |
482 | devc->logic_pattern = pattern; | |
483 | ||
484 | /* Might as well do this now, these are static. */ | |
485 | if (pattern == PATTERN_ALL_LOW) | |
8b2d41ed | 486 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); |
2388ae86 | 487 | else if (pattern == PATTERN_ALL_HIGH) |
8b2d41ed | 488 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); |
2388ae86 BV |
489 | sr_dbg("Setting logic pattern to %s", |
490 | logic_pattern_str[pattern]); | |
3f239f08 | 491 | } else if (ch->type == SR_CHANNEL_ANALOG) { |
2388ae86 BV |
492 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { |
493 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
494 | pattern = i; | |
495 | break; | |
8b2d41ed | 496 | } |
8b2d41ed | 497 | } |
2388ae86 BV |
498 | if (pattern == -1) |
499 | return SR_ERR_ARG; | |
660e398f | 500 | sr_dbg("Setting analog pattern for channel group %s to %s", |
53b4680f UH |
501 | cg->name, analog_pattern_str[pattern]); |
502 | ag = cg->priv; | |
4374219b | 503 | ag->pattern = pattern; |
2388ae86 BV |
504 | } else |
505 | return SR_ERR_BUG; | |
506 | break; | |
507 | default: | |
bd6fbf62 | 508 | ret = SR_ERR_NA; |
6239c175 UH |
509 | } |
510 | ||
511 | return ret; | |
512 | } | |
513 | ||
8f996b89 | 514 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 515 | const struct sr_channel_group *cg) |
a1c743fc | 516 | { |
ba7dd8bb | 517 | struct sr_channel *ch; |
d00088ca BV |
518 | GVariant *gvar; |
519 | GVariantBuilder gvb; | |
a1c743fc BV |
520 | |
521 | (void)sdi; | |
522 | ||
7a1da331 | 523 | if (key == SR_CONF_SCAN_OPTIONS) { |
c07f60e7 | 524 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
7a1da331 BV |
525 | scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); |
526 | return SR_OK; | |
527 | } | |
528 | ||
529 | if (!sdi) | |
530 | return SR_ERR_ARG; | |
531 | ||
53b4680f | 532 | if (!cg) { |
7a1da331 BV |
533 | switch (key) { |
534 | case SR_CONF_DEVICE_OPTIONS: | |
535 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
536 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
537 | break; | |
538 | case SR_CONF_SAMPLERATE: | |
539 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
540 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
541 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
542 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
543 | *data = g_variant_builder_end(&gvb); | |
544 | break; | |
545 | default: | |
546 | return SR_ERR_NA; | |
547 | } | |
548 | } else { | |
ba7dd8bb | 549 | ch = cg->channels->data; |
7a1da331 BV |
550 | switch (key) { |
551 | case SR_CONF_DEVICE_OPTIONS: | |
552 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
40fd0264 | 553 | devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(int32_t)); |
7a1da331 BV |
554 | break; |
555 | case SR_CONF_PATTERN_MODE: | |
3f239f08 | 556 | if (ch->type == SR_CHANNEL_LOGIC) |
7a1da331 BV |
557 | *data = g_variant_new_strv(logic_pattern_str, |
558 | ARRAY_SIZE(logic_pattern_str)); | |
3f239f08 | 559 | else if (ch->type == SR_CHANNEL_ANALOG) |
7a1da331 BV |
560 | *data = g_variant_new_strv(analog_pattern_str, |
561 | ARRAY_SIZE(analog_pattern_str)); | |
2388ae86 BV |
562 | else |
563 | return SR_ERR_BUG; | |
7a1da331 BV |
564 | break; |
565 | default: | |
566 | return SR_ERR_NA; | |
567 | } | |
a1c743fc BV |
568 | } |
569 | ||
570 | return SR_OK; | |
571 | } | |
572 | ||
c07f60e7 | 573 | static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) |
85b5af06 | 574 | { |
61c39f54 | 575 | struct dev_context *devc; |
c07f60e7 BV |
576 | uint64_t i, j; |
577 | uint8_t pat; | |
85b5af06 | 578 | |
61c39f54 | 579 | devc = sdi->priv; |
85b5af06 | 580 | |
c07f60e7 | 581 | switch (devc->logic_pattern) { |
61c39f54 | 582 | case PATTERN_SIGROK: |
c07f60e7 BV |
583 | memset(devc->logic_data, 0x00, size); |
584 | for (i = 0; i < size; i += devc->logic_unitsize) { | |
585 | for (j = 0; j < devc->logic_unitsize; j++) { | |
586 | pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; | |
587 | devc->logic_data[i + j] = ~pat; | |
588 | } | |
589 | devc->step++; | |
917e0e71 BV |
590 | } |
591 | break; | |
61c39f54 | 592 | case PATTERN_RANDOM: |
5096c6a6 | 593 | for (i = 0; i < size; i++) |
61c39f54 | 594 | devc->logic_data[i] = (uint8_t)(rand() & 0xff); |
85b5af06 | 595 | break; |
61c39f54 | 596 | case PATTERN_INC: |
c07f60e7 BV |
597 | for (i = 0; i < size; i++) { |
598 | for (j = 0; j < devc->logic_unitsize; j++) { | |
599 | devc->logic_data[i + j] = devc->step; | |
600 | } | |
601 | devc->step++; | |
602 | } | |
c03ed397 | 603 | break; |
61c39f54 BV |
604 | case PATTERN_ALL_LOW: |
605 | case PATTERN_ALL_HIGH: | |
606 | /* These were set when the pattern mode was selected. */ | |
c03ed397 UH |
607 | break; |
608 | default: | |
c07f60e7 | 609 | sr_err("Unknown pattern: %d.", devc->logic_pattern); |
c03ed397 | 610 | break; |
85b5af06 UH |
611 | } |
612 | } | |
613 | ||
85b5af06 | 614 | /* Callback handling data */ |
61c39f54 | 615 | static int prepare_data(int fd, int revents, void *cb_data) |
85b5af06 | 616 | { |
61c39f54 BV |
617 | struct sr_dev_inst *sdi; |
618 | struct dev_context *devc; | |
b9c735a2 | 619 | struct sr_datafeed_packet packet; |
9c939c51 | 620 | struct sr_datafeed_logic logic; |
40fd0264 | 621 | struct sr_channel_group *cg; |
8b2d41ed BV |
622 | struct analog_gen *ag; |
623 | GSList *l; | |
b62bb97a | 624 | uint64_t logic_todo, analog_todo, expected_samplenum, analog_sent, sending_now; |
3b203673 | 625 | int64_t time, elapsed; |
1924f59f | 626 | |
cb93f8a9 UH |
627 | (void)fd; |
628 | (void)revents; | |
1924f59f | 629 | |
61c39f54 BV |
630 | sdi = cb_data; |
631 | devc = sdi->priv; | |
b62bb97a | 632 | logic_todo = analog_todo = 0; |
61c39f54 | 633 | |
b62bb97a | 634 | /* How many samples should we have sent by now? */ |
3b203673 AG |
635 | time = g_get_monotonic_time(); |
636 | elapsed = time - devc->starttime; | |
a7684294 | 637 | expected_samplenum = elapsed * devc->cur_samplerate / 1000000; |
7f4975b4 | 638 | |
b62bb97a BV |
639 | /* But never more than the limit, if there is one. */ |
640 | if (!devc->continuous) | |
641 | expected_samplenum = MIN(expected_samplenum, devc->limit_samples); | |
642 | ||
3b203673 | 643 | /* Of those, how many do we still have to send? */ |
b62bb97a BV |
644 | if (devc->num_logic_channels) |
645 | logic_todo = expected_samplenum - devc->logic_counter; | |
646 | if (devc->num_analog_channels) | |
647 | analog_todo = expected_samplenum - devc->analog_counter; | |
85b5af06 | 648 | |
7f4975b4 | 649 | while (logic_todo || analog_todo) { |
c07f60e7 | 650 | /* Logic */ |
b62bb97a BV |
651 | if (logic_todo > 0) { |
652 | sending_now = MIN(logic_todo, LOGIC_BUFSIZE / devc->logic_unitsize); | |
8b2d41ed BV |
653 | logic_generator(sdi, sending_now * devc->logic_unitsize); |
654 | packet.type = SR_DF_LOGIC; | |
655 | packet.payload = &logic; | |
656 | logic.length = sending_now * devc->logic_unitsize; | |
657 | logic.unitsize = devc->logic_unitsize; | |
658 | logic.data = devc->logic_data; | |
659 | sr_session_send(sdi, &packet); | |
7f4975b4 BV |
660 | logic_todo -= sending_now; |
661 | devc->logic_counter += sending_now; | |
8b2d41ed BV |
662 | } |
663 | ||
ba7dd8bb | 664 | /* Analog, one channel at a time */ |
b62bb97a BV |
665 | if (analog_todo > 0) { |
666 | analog_sent = 0; | |
660e398f | 667 | for (l = devc->analog_channel_groups; l; l = l->next) { |
40fd0264 UH |
668 | cg = l->data; |
669 | ag = cg->priv; | |
8b2d41ed BV |
670 | packet.type = SR_DF_ANALOG; |
671 | packet.payload = &ag->packet; | |
4374219b DJ |
672 | |
673 | /* FIXME we should make sure we output a whole | |
674 | * period of data before we send out again the | |
675 | * beginning of our buffer. A ring buffer would | |
676 | * help here as well */ | |
677 | ||
b62bb97a BV |
678 | sending_now = MIN(analog_todo, ag->num_samples); |
679 | ag->packet.num_samples = sending_now; | |
8b2d41ed | 680 | sr_session_send(sdi, &packet); |
b62bb97a BV |
681 | |
682 | /* Whichever channel group gets there first. */ | |
683 | analog_sent = MAX(analog_sent, sending_now); | |
8b2d41ed | 684 | } |
b62bb97a BV |
685 | analog_todo -= analog_sent; |
686 | devc->analog_counter += analog_sent; | |
8b2d41ed | 687 | } |
3b203673 AG |
688 | } |
689 | ||
b62bb97a BV |
690 | if (!devc->continuous |
691 | && (!devc->num_logic_channels || devc->logic_counter >= devc->limit_samples) | |
692 | && (!devc->num_analog_channels || devc->analog_counter >= devc->limit_samples)) { | |
7f4975b4 | 693 | sr_dbg("Requested number of samples reached."); |
61c39f54 | 694 | dev_acquisition_stop(sdi, cb_data); |
c216d623 | 695 | return TRUE; |
85b5af06 | 696 | } |
1924f59f | 697 | |
85b5af06 UH |
698 | return TRUE; |
699 | } | |
700 | ||
6078d2c9 | 701 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 702 | { |
4374219b | 703 | GSList *l; |
61c39f54 | 704 | struct dev_context *devc; |
85b5af06 | 705 | |
102f1239 BV |
706 | (void)cb_data; |
707 | ||
e73ffd42 BV |
708 | if (sdi->status != SR_ST_ACTIVE) |
709 | return SR_ERR_DEV_CLOSED; | |
710 | ||
61c39f54 | 711 | devc = sdi->priv; |
b62bb97a | 712 | devc->continuous = !devc->limit_samples; |
7f4975b4 | 713 | devc->logic_counter = devc->analog_counter = 0; |
85b5af06 | 714 | |
3b203673 AG |
715 | /* |
716 | * Setting two channels connected by a pipe is a remnant from when the | |
717 | * demo driver generated data in a thread, and collected and sent the | |
718 | * data in the main program loop. | |
719 | * They are kept here because it provides a convenient way of setting | |
720 | * up a timeout-based polling mechanism. | |
721 | */ | |
b4750a3a | 722 | if (pipe(devc->pipe_fds)) { |
92bcedf6 | 723 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 724 | return SR_ERR; |
c03ed397 | 725 | } |
85b5af06 | 726 | |
b62bb97a | 727 | for (l = devc->analog_channel_groups; l; l = l->next) |
4374219b | 728 | generate_analog_pattern(l->data, devc->cur_samplerate); |
4374219b | 729 | |
e0532047 | 730 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); |
e0532047 | 731 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 732 | |
d35aaf02 | 733 | /* Set channel encoding to binary (default is UTF-8). */ |
e0532047 | 734 | g_io_channel_set_encoding(devc->channel, NULL, NULL); |
d35aaf02 | 735 | |
b62bb97a | 736 | /* Make channels unbuffered. */ |
e0532047 | 737 | g_io_channel_set_buffered(devc->channel, FALSE); |
d35aaf02 | 738 | |
b62bb97a BV |
739 | sr_session_source_add_channel(sdi->session, devc->channel, |
740 | G_IO_IN | G_IO_ERR, 40, prepare_data, (void *)sdi); | |
85b5af06 | 741 | |
4afdfd46 | 742 | /* Send header packet to the session bus. */ |
102f1239 | 743 | std_session_send_df_header(sdi, LOG_PREFIX); |
f366e86c | 744 | |
3b203673 AG |
745 | /* We use this timestamp to decide how many more samples to send. */ |
746 | devc->starttime = g_get_monotonic_time(); | |
747 | ||
e46b8fb1 | 748 | return SR_OK; |
6239c175 UH |
749 | } |
750 | ||
6078d2c9 | 751 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 752 | { |
8b2d41ed | 753 | struct dev_context *devc; |
c216d623 | 754 | struct sr_datafeed_packet packet; |
7fd3e859 | 755 | |
33ef7573 | 756 | (void)cb_data; |
7fd3e859 | 757 | |
8b2d41ed | 758 | devc = sdi->priv; |
a84f6ad3 | 759 | sr_dbg("Stopping acquisition."); |
49145a63 | 760 | |
102f1239 | 761 | sr_session_source_remove_channel(sdi->session, devc->channel); |
e0532047 | 762 | g_io_channel_shutdown(devc->channel, FALSE, NULL); |
2150a69b JH |
763 | g_io_channel_unref(devc->channel); |
764 | devc->channel = NULL; | |
c216d623 AG |
765 | |
766 | /* Send last packet. */ | |
767 | packet.type = SR_DF_END; | |
c07f60e7 | 768 | sr_session_send(sdi, &packet); |
7fd3e859 | 769 | |
3010f21c | 770 | return SR_OK; |
6239c175 UH |
771 | } |
772 | ||
c09f0b57 | 773 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
774 | .name = "demo", |
775 | .longname = "Demo driver and pattern generator", | |
776 | .api_version = 1, | |
6078d2c9 UH |
777 | .init = init, |
778 | .cleanup = cleanup, | |
779 | .scan = scan, | |
780 | .dev_list = dev_list, | |
a6630742 | 781 | .dev_clear = NULL, |
035a1078 BV |
782 | .config_get = config_get, |
783 | .config_set = config_set, | |
a1c743fc | 784 | .config_list = config_list, |
6078d2c9 UH |
785 | .dev_open = dev_open, |
786 | .dev_close = dev_close, | |
787 | .dev_acquisition_start = dev_acquisition_start, | |
788 | .dev_acquisition_stop = dev_acquisition_stop, | |
b4750a3a | 789 | .priv = NULL, |
6239c175 | 790 | }; |