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Commit | Line | Data |
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6239c175 UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
fc96e6f8 | 5 | * Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com> |
6239c175 UH |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include <stdlib.h> | |
85b5af06 | 23 | #include <unistd.h> |
6239c175 | 24 | #include <string.h> |
d35aaf02 UH |
25 | #ifdef _WIN32 |
26 | #include <io.h> | |
27 | #include <fcntl.h> | |
28 | #define pipe(fds) _pipe(fds, 4096, _O_BINARY) | |
29 | #endif | |
45c59c8b BV |
30 | #include "libsigrok.h" |
31 | #include "libsigrok-internal.h" | |
6239c175 | 32 | |
c03ed397 | 33 | /* TODO: Number of probes should be configurable. */ |
e15f48c2 | 34 | #define NUM_PROBES 8 |
c03ed397 | 35 | |
e15f48c2 | 36 | #define DEMONAME "Demo device" |
c03ed397 UH |
37 | |
38 | /* The size of chunks to send through the session bus. */ | |
39 | /* TODO: Should be configurable. */ | |
e15f48c2 | 40 | #define BUFSIZE 4096 |
85b5af06 | 41 | |
0d31276b | 42 | /* Supported patterns which we can generate */ |
e15f48c2 | 43 | enum { |
0d31276b UH |
44 | /** |
45 | * Pattern which spells "sigrok" using '0's (with '1's as "background") | |
46 | * when displayed using the 'bits' output format. | |
47 | */ | |
c8f4624d | 48 | PATTERN_SIGROK, |
0d31276b | 49 | |
c03ed397 | 50 | /** Pattern which consists of (pseudo-)random values on all probes. */ |
c8f4624d | 51 | PATTERN_RANDOM, |
0d31276b UH |
52 | |
53 | /** | |
54 | * Pattern which consists of incrementing numbers. | |
55 | * TODO: Better description. | |
56 | */ | |
c8f4624d | 57 | PATTERN_INC, |
c03ed397 UH |
58 | |
59 | /** Pattern where all probes have a low logic state. */ | |
60 | PATTERN_ALL_LOW, | |
61 | ||
62 | /** Pattern where all probes have a high logic state. */ | |
63 | PATTERN_ALL_HIGH, | |
e15f48c2 | 64 | }; |
85b5af06 | 65 | |
b4750a3a BV |
66 | /* Private, per-device-instance driver context. */ |
67 | struct dev_context { | |
e15f48c2 | 68 | int pipe_fds[2]; |
249ae2be | 69 | GIOChannel *channels[2]; |
e15f48c2 BV |
70 | uint8_t sample_generator; |
71 | uint8_t thread_running; | |
72 | uint64_t samples_counter; | |
3cd3a20b | 73 | void *session_dev_id; |
b9cc3629 | 74 | GTimer *timer; |
e15f48c2 | 75 | }; |
85b5af06 | 76 | |
915f7cc8 | 77 | static const int hwcaps[] = { |
5a2326a7 | 78 | SR_HWCAP_LOGIC_ANALYZER, |
bb7ef793 | 79 | SR_HWCAP_DEMO_DEV, |
4bfbf9fc | 80 | SR_HWCAP_SAMPLERATE, |
5a2326a7 UH |
81 | SR_HWCAP_PATTERN_MODE, |
82 | SR_HWCAP_LIMIT_SAMPLES, | |
83 | SR_HWCAP_LIMIT_MSEC, | |
84 | SR_HWCAP_CONTINUOUS, | |
6239c175 UH |
85 | }; |
86 | ||
a533743d | 87 | static const struct sr_samplerates samplerates = { |
c9140419 | 88 | SR_HZ(1), |
59df0c77 | 89 | SR_GHZ(1), |
c9140419 | 90 | SR_HZ(1), |
4bfbf9fc BV |
91 | NULL, |
92 | }; | |
93 | ||
c8f4624d | 94 | static const char *pattern_strings[] = { |
c03ed397 | 95 | "sigrok", |
e15f48c2 BV |
96 | "random", |
97 | "incremental", | |
c03ed397 UH |
98 | "all-low", |
99 | "all-high", | |
02440dd8 | 100 | NULL, |
85b5af06 UH |
101 | }; |
102 | ||
d261dbbf | 103 | /* We name the probes 0-7 on our demo driver. */ |
464d12c7 KS |
104 | static const char *probe_names[NUM_PROBES + 1] = { |
105 | "0", | |
106 | "1", | |
107 | "2", | |
108 | "3", | |
109 | "4", | |
110 | "5", | |
111 | "6", | |
112 | "7", | |
113 | NULL, | |
114 | }; | |
115 | ||
c8f4624d | 116 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
117 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
118 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
119 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
120 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
121 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
122 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
123 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
124 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
125 | }; | |
126 | ||
ea9cfed7 UH |
127 | /* Private, per-device-instance driver context. */ |
128 | /* TODO: struct context as with the other drivers. */ | |
129 | ||
e7eb703f | 130 | /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */ |
dcf03d6d BV |
131 | SR_PRIV struct sr_dev_driver demo_driver_info; |
132 | static struct sr_dev_driver *ddi = &demo_driver_info; | |
59df0c77 | 133 | static uint64_t cur_samplerate = SR_KHZ(200); |
b9cc3629 BV |
134 | static uint64_t limit_samples = 0; |
135 | static uint64_t limit_msec = 0; | |
c8f4624d | 136 | static int default_pattern = PATTERN_SIGROK; |
b9cc3629 BV |
137 | static GThread *my_thread; |
138 | static int thread_running; | |
6239c175 | 139 | |
69b07d14 | 140 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 141 | |
40dda2c3 | 142 | static int hw_init(void) |
61136ea6 | 143 | { |
b4750a3a | 144 | struct drv_context *drvc; |
61136ea6 | 145 | |
b4750a3a | 146 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { |
886a52b6 UH |
147 | sr_err("demo: driver context malloc failed."); |
148 | return SR_ERR_MALLOC; | |
b4750a3a BV |
149 | } |
150 | ddi->priv = drvc; | |
61136ea6 BV |
151 | |
152 | return SR_OK; | |
153 | } | |
154 | ||
067d0716 | 155 | static GSList *hw_scan(GSList *options) |
6239c175 | 156 | { |
d68e2d1a | 157 | struct sr_dev_inst *sdi; |
87ca93c5 | 158 | struct sr_probe *probe; |
b4750a3a | 159 | struct drv_context *drvc; |
067d0716 | 160 | GSList *devices; |
87ca93c5 | 161 | int i; |
067d0716 BV |
162 | |
163 | (void)options; | |
b4750a3a | 164 | drvc = ddi->priv; |
067d0716 | 165 | devices = NULL; |
85b5af06 | 166 | |
d3683c42 | 167 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL); |
c03ed397 | 168 | if (!sdi) { |
d68e2d1a | 169 | sr_err("demo: %s: sr_dev_inst_new failed", __func__); |
85b5af06 | 170 | return 0; |
c03ed397 | 171 | } |
7dfcf010 | 172 | sdi->driver = ddi; |
e15f48c2 | 173 | |
87ca93c5 BV |
174 | for (i = 0; probe_names[i]; i++) { |
175 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
176 | probe_names[i]))) | |
177 | return NULL; | |
178 | sdi->probes = g_slist_append(sdi->probes, probe); | |
179 | } | |
180 | ||
067d0716 | 181 | devices = g_slist_append(devices, sdi); |
b4750a3a | 182 | drvc->instances = g_slist_append(drvc->instances, sdi); |
85b5af06 | 183 | |
067d0716 | 184 | return devices; |
6239c175 UH |
185 | } |
186 | ||
811deee4 BV |
187 | static GSList *hw_dev_list(void) |
188 | { | |
189 | struct drv_context *drvc; | |
190 | ||
191 | drvc = ddi->priv; | |
192 | ||
193 | return drvc->instances; | |
194 | } | |
195 | ||
25a0f108 | 196 | static int hw_dev_open(struct sr_dev_inst *sdi) |
6239c175 | 197 | { |
17e1afcb | 198 | /* Avoid compiler warnings. */ |
25a0f108 | 199 | (void)sdi; |
6239c175 UH |
200 | |
201 | /* Nothing needed so far. */ | |
697785d1 | 202 | |
e46b8fb1 | 203 | return SR_OK; |
6239c175 UH |
204 | } |
205 | ||
25a0f108 | 206 | static int hw_dev_close(struct sr_dev_inst *sdi) |
6239c175 | 207 | { |
17e1afcb | 208 | /* Avoid compiler warnings. */ |
25a0f108 | 209 | (void)sdi; |
6239c175 UH |
210 | |
211 | /* Nothing needed so far. */ | |
697785d1 UH |
212 | |
213 | return SR_OK; | |
6239c175 UH |
214 | } |
215 | ||
57ab7d9f | 216 | static int hw_cleanup(void) |
6239c175 UH |
217 | { |
218 | /* Nothing needed so far. */ | |
57ab7d9f | 219 | return SR_OK; |
6239c175 UH |
220 | } |
221 | ||
dfb0fa1a BV |
222 | static int hw_info_get(int info_id, const void **data, |
223 | const struct sr_dev_inst *sdi) | |
6239c175 | 224 | { |
85b5af06 | 225 | |
6f57fd96 BV |
226 | (void)sdi; |
227 | ||
dfb0fa1a | 228 | switch (info_id) { |
46c7a4da BV |
229 | case SR_DI_HWCAPS: |
230 | *data = hwcaps; | |
231 | break; | |
5a2326a7 | 232 | case SR_DI_NUM_PROBES: |
dfb0fa1a | 233 | *data = GINT_TO_POINTER(NUM_PROBES); |
6239c175 | 234 | break; |
464d12c7 | 235 | case SR_DI_PROBE_NAMES: |
dfb0fa1a | 236 | *data = probe_names; |
464d12c7 | 237 | break; |
4bfbf9fc | 238 | case SR_DI_SAMPLERATES: |
dfb0fa1a | 239 | *data = &samplerates; |
4bfbf9fc | 240 | break; |
5a2326a7 | 241 | case SR_DI_CUR_SAMPLERATE: |
dfb0fa1a | 242 | *data = &cur_samplerate; |
6239c175 | 243 | break; |
eb0a3731 | 244 | case SR_DI_PATTERNS: |
dfb0fa1a | 245 | *data = &pattern_strings; |
e15f48c2 | 246 | break; |
7dfcf010 BV |
247 | default: |
248 | return SR_ERR_ARG; | |
6239c175 UH |
249 | } |
250 | ||
dfb0fa1a | 251 | return SR_OK; |
6239c175 UH |
252 | } |
253 | ||
6f4b1868 BV |
254 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
255 | const void *value) | |
6239c175 UH |
256 | { |
257 | int ret; | |
1b79df2f | 258 | const char *stropt; |
6239c175 | 259 | |
6f4b1868 | 260 | (void)sdi; |
6239c175 | 261 | |
014359e3 | 262 | if (hwcap == SR_HWCAP_SAMPLERATE) { |
1b79df2f | 263 | cur_samplerate = *(const uint64_t *)value; |
6f422264 UH |
264 | sr_dbg("demo: %s: setting samplerate to %" PRIu64, __func__, |
265 | cur_samplerate); | |
e46b8fb1 | 266 | ret = SR_OK; |
ffedd0bf | 267 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { |
8489264f | 268 | limit_msec = 0; |
1b79df2f | 269 | limit_samples = *(const uint64_t *)value; |
6f422264 UH |
270 | sr_dbg("demo: %s: setting limit_samples to %" PRIu64, __func__, |
271 | limit_samples); | |
e46b8fb1 | 272 | ret = SR_OK; |
ffedd0bf | 273 | } else if (hwcap == SR_HWCAP_LIMIT_MSEC) { |
1b79df2f | 274 | limit_msec = *(const uint64_t *)value; |
8489264f | 275 | limit_samples = 0; |
6f422264 UH |
276 | sr_dbg("demo: %s: setting limit_msec to %" PRIu64, __func__, |
277 | limit_msec); | |
e46b8fb1 | 278 | ret = SR_OK; |
ffedd0bf | 279 | } else if (hwcap == SR_HWCAP_PATTERN_MODE) { |
e15f48c2 | 280 | stropt = value; |
c03ed397 UH |
281 | ret = SR_OK; |
282 | if (!strcmp(stropt, "sigrok")) { | |
283 | default_pattern = PATTERN_SIGROK; | |
284 | } else if (!strcmp(stropt, "random")) { | |
c8f4624d | 285 | default_pattern = PATTERN_RANDOM; |
e15f48c2 | 286 | } else if (!strcmp(stropt, "incremental")) { |
c8f4624d | 287 | default_pattern = PATTERN_INC; |
c03ed397 UH |
288 | } else if (!strcmp(stropt, "all-low")) { |
289 | default_pattern = PATTERN_ALL_LOW; | |
290 | } else if (!strcmp(stropt, "all-high")) { | |
291 | default_pattern = PATTERN_ALL_HIGH; | |
e15f48c2 | 292 | } else { |
e46b8fb1 | 293 | ret = SR_ERR; |
e15f48c2 | 294 | } |
c8f4624d UH |
295 | sr_dbg("demo: %s: setting pattern to %d", __func__, |
296 | default_pattern); | |
6239c175 | 297 | } else { |
e46b8fb1 | 298 | ret = SR_ERR; |
6239c175 UH |
299 | } |
300 | ||
301 | return ret; | |
302 | } | |
303 | ||
5096c6a6 | 304 | static void samples_generator(uint8_t *buf, uint64_t size, void *data) |
85b5af06 | 305 | { |
cddd1c5f | 306 | static uint64_t p = 0; |
b4750a3a | 307 | struct dev_context *devc = data; |
cddd1c5f | 308 | uint64_t i; |
85b5af06 | 309 | |
c03ed397 | 310 | /* TODO: Needed? */ |
5096c6a6 | 311 | memset(buf, 0, size); |
85b5af06 | 312 | |
b4750a3a | 313 | switch (devc->sample_generator) { |
c03ed397 | 314 | case PATTERN_SIGROK: /* sigrok pattern */ |
917e0e71 | 315 | for (i = 0; i < size; i++) { |
c8f4624d | 316 | *(buf + i) = ~(pattern_sigrok[p] >> 1); |
917e0e71 BV |
317 | if (++p == 64) |
318 | p = 0; | |
319 | } | |
320 | break; | |
c8f4624d | 321 | case PATTERN_RANDOM: /* Random */ |
5096c6a6 UH |
322 | for (i = 0; i < size; i++) |
323 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 | 324 | break; |
c8f4624d | 325 | case PATTERN_INC: /* Simple increment */ |
5096c6a6 | 326 | for (i = 0; i < size; i++) |
85b5af06 UH |
327 | *(buf + i) = i; |
328 | break; | |
c03ed397 | 329 | case PATTERN_ALL_LOW: /* All probes are low */ |
5a9660dd | 330 | memset(buf, 0x00, size); |
c03ed397 UH |
331 | break; |
332 | case PATTERN_ALL_HIGH: /* All probes are high */ | |
5a9660dd | 333 | memset(buf, 0xff, size); |
c03ed397 UH |
334 | break; |
335 | default: | |
0abee507 | 336 | sr_err("demo: %s: unknown pattern %d", __func__, |
b4750a3a | 337 | devc->sample_generator); |
c03ed397 | 338 | break; |
85b5af06 UH |
339 | } |
340 | } | |
341 | ||
342 | /* Thread function */ | |
343 | static void thread_func(void *data) | |
344 | { | |
b4750a3a | 345 | struct dev_context *devc = data; |
85b5af06 UH |
346 | uint8_t buf[BUFSIZE]; |
347 | uint64_t nb_to_send = 0; | |
d35aaf02 | 348 | int bytes_written; |
1924f59f HE |
349 | double time_cur, time_last, time_diff; |
350 | ||
b4750a3a | 351 | time_last = g_timer_elapsed(devc->timer, NULL); |
85b5af06 UH |
352 | |
353 | while (thread_running) { | |
1924f59f | 354 | /* Rate control */ |
b4750a3a | 355 | time_cur = g_timer_elapsed(devc->timer, NULL); |
1924f59f HE |
356 | |
357 | time_diff = time_cur - time_last; | |
358 | time_last = time_cur; | |
359 | ||
360 | nb_to_send = cur_samplerate * time_diff; | |
361 | ||
c03ed397 | 362 | if (limit_samples) { |
1924f59f | 363 | nb_to_send = MIN(nb_to_send, |
b4750a3a | 364 | limit_samples - devc->samples_counter); |
c03ed397 | 365 | } |
1924f59f HE |
366 | |
367 | /* Make sure we don't overflow. */ | |
368 | nb_to_send = MIN(nb_to_send, BUFSIZE); | |
369 | ||
370 | if (nb_to_send) { | |
371 | samples_generator(buf, nb_to_send, data); | |
b4750a3a | 372 | devc->samples_counter += nb_to_send; |
070befcd | 373 | |
b4750a3a | 374 | g_io_channel_write_chars(devc->channels[1], (gchar *)&buf, |
c03ed397 | 375 | nb_to_send, (gsize *)&bytes_written, NULL); |
b9cc3629 BV |
376 | } |
377 | ||
1924f59f HE |
378 | /* Check if we're done. */ |
379 | if ((limit_msec && time_cur * 1000 > limit_msec) || | |
b4750a3a | 380 | (limit_samples && devc->samples_counter >= limit_samples)) |
1924f59f | 381 | { |
b4750a3a | 382 | close(devc->pipe_fds[1]); |
85b5af06 | 383 | thread_running = 0; |
85b5af06 UH |
384 | } |
385 | ||
1924f59f | 386 | g_usleep(10); |
85b5af06 UH |
387 | } |
388 | } | |
389 | ||
390 | /* Callback handling data */ | |
1f9813eb | 391 | static int receive_data(int fd, int revents, void *cb_data) |
85b5af06 | 392 | { |
b4750a3a | 393 | struct dev_context *devc = cb_data; |
b9c735a2 | 394 | struct sr_datafeed_packet packet; |
9c939c51 BV |
395 | struct sr_datafeed_logic logic; |
396 | static uint64_t samples_received = 0; | |
397 | unsigned char c[BUFSIZE]; | |
108a5bfb | 398 | gsize z; |
1924f59f | 399 | |
26ce0bbf | 400 | /* Avoid compiler warnings. */ |
cb93f8a9 UH |
401 | (void)fd; |
402 | (void)revents; | |
1924f59f HE |
403 | |
404 | do { | |
b4750a3a | 405 | g_io_channel_read_chars(devc->channels[0], |
070befcd | 406 | (gchar *)&c, BUFSIZE, &z, NULL); |
1924f59f HE |
407 | |
408 | if (z > 0) { | |
5a2326a7 | 409 | packet.type = SR_DF_LOGIC; |
9c939c51 | 410 | packet.payload = &logic; |
9c939c51 BV |
411 | logic.length = z; |
412 | logic.unitsize = 1; | |
413 | logic.data = c; | |
b4750a3a | 414 | sr_session_send(devc->session_dev_id, &packet); |
9c939c51 | 415 | samples_received += z; |
1924f59f HE |
416 | } |
417 | } while (z > 0); | |
85b5af06 | 418 | |
c03ed397 UH |
419 | if (!thread_running && z <= 0) { |
420 | /* Make sure we don't receive more packets. */ | |
b4750a3a | 421 | g_io_channel_shutdown(devc->channels[0], FALSE, NULL); |
d35aaf02 | 422 | |
1924f59f | 423 | /* Send last packet. */ |
5a2326a7 | 424 | packet.type = SR_DF_END; |
b4750a3a | 425 | sr_session_send(devc->session_dev_id, &packet); |
1924f59f HE |
426 | |
427 | return FALSE; | |
85b5af06 | 428 | } |
1924f59f | 429 | |
85b5af06 UH |
430 | return TRUE; |
431 | } | |
432 | ||
3ffb6964 BV |
433 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
434 | void *cb_data) | |
6239c175 | 435 | { |
b9c735a2 UH |
436 | struct sr_datafeed_packet *packet; |
437 | struct sr_datafeed_header *header; | |
f366e86c | 438 | struct sr_datafeed_meta_logic meta; |
b4750a3a | 439 | struct dev_context *devc; |
6239c175 | 440 | |
3ffb6964 BV |
441 | (void)sdi; |
442 | ||
b4750a3a BV |
443 | /* TODO: 'devc' is never g_free()'d? */ |
444 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
445 | sr_err("demo: %s: devc malloc failed", __func__); | |
e46b8fb1 | 446 | return SR_ERR_MALLOC; |
27a3a6fe | 447 | } |
85b5af06 | 448 | |
b4750a3a BV |
449 | devc->sample_generator = default_pattern; |
450 | devc->session_dev_id = cb_data; | |
451 | devc->samples_counter = 0; | |
85b5af06 | 452 | |
b4750a3a | 453 | if (pipe(devc->pipe_fds)) { |
c03ed397 UH |
454 | /* TODO: Better error message. */ |
455 | sr_err("demo: %s: pipe() failed", __func__); | |
e46b8fb1 | 456 | return SR_ERR; |
c03ed397 | 457 | } |
85b5af06 | 458 | |
b4750a3a BV |
459 | devc->channels[0] = g_io_channel_unix_new(devc->pipe_fds[0]); |
460 | devc->channels[1] = g_io_channel_unix_new(devc->pipe_fds[1]); | |
d35aaf02 | 461 | |
b4750a3a | 462 | g_io_channel_set_flags(devc->channels[0], G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 463 | |
d35aaf02 | 464 | /* Set channel encoding to binary (default is UTF-8). */ |
b4750a3a BV |
465 | g_io_channel_set_encoding(devc->channels[0], NULL, NULL); |
466 | g_io_channel_set_encoding(devc->channels[1], NULL, NULL); | |
d35aaf02 UH |
467 | |
468 | /* Make channels to unbuffered. */ | |
b4750a3a BV |
469 | g_io_channel_set_buffered(devc->channels[0], FALSE); |
470 | g_io_channel_set_buffered(devc->channels[1], FALSE); | |
d35aaf02 | 471 | |
b4750a3a BV |
472 | sr_session_source_add_channel(devc->channels[0], G_IO_IN | G_IO_ERR, |
473 | 40, receive_data, devc); | |
85b5af06 UH |
474 | |
475 | /* Run the demo thread. */ | |
b4750a3a | 476 | devc->timer = g_timer_new(); |
85b5af06 | 477 | thread_running = 1; |
4ca378df BV |
478 | my_thread = g_thread_try_new("sigrok demo generator", |
479 | (GThreadFunc)thread_func, devc, NULL); | |
c03ed397 | 480 | if (!my_thread) { |
4ca378df | 481 | sr_err("demo: %s: g_thread_try_new failed", __func__); |
c03ed397 UH |
482 | return SR_ERR; /* TODO */ |
483 | } | |
6239c175 | 484 | |
27a3a6fe UH |
485 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
486 | sr_err("demo: %s: packet malloc failed", __func__); | |
e46b8fb1 | 487 | return SR_ERR_MALLOC; |
27a3a6fe UH |
488 | } |
489 | ||
490 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
491 | sr_err("demo: %s: header malloc failed", __func__); | |
492 | return SR_ERR_MALLOC; | |
493 | } | |
6239c175 | 494 | |
5a2326a7 | 495 | packet->type = SR_DF_HEADER; |
9c939c51 | 496 | packet->payload = header; |
6239c175 UH |
497 | header->feed_version = 1; |
498 | gettimeofday(&header->starttime, NULL); | |
b4750a3a | 499 | sr_session_send(devc->session_dev_id, packet); |
f366e86c BV |
500 | |
501 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
502 | packet->type = SR_DF_META_LOGIC; | |
503 | packet->payload = &meta; | |
504 | meta.samplerate = cur_samplerate; | |
505 | meta.num_probes = NUM_PROBES; | |
b4750a3a | 506 | sr_session_send(devc->session_dev_id, packet); |
f366e86c | 507 | |
27a3a6fe UH |
508 | g_free(header); |
509 | g_free(packet); | |
6239c175 | 510 | |
e46b8fb1 | 511 | return SR_OK; |
6239c175 UH |
512 | } |
513 | ||
69b07d14 | 514 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 515 | { |
7fd3e859 BV |
516 | struct dev_context *devc; |
517 | ||
17e1afcb | 518 | /* Avoid compiler warnings. */ |
3cd3a20b | 519 | (void)cb_data; |
6239c175 | 520 | |
7fd3e859 BV |
521 | devc = sdi->priv; |
522 | ||
1924f59f HE |
523 | /* Stop generate thread. */ |
524 | thread_running = 0; | |
3010f21c | 525 | |
7fd3e859 BV |
526 | sr_session_source_remove_channel(devc->channels[0]); |
527 | ||
3010f21c | 528 | return SR_OK; |
6239c175 UH |
529 | } |
530 | ||
c09f0b57 | 531 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
532 | .name = "demo", |
533 | .longname = "Demo driver and pattern generator", | |
534 | .api_version = 1, | |
535 | .init = hw_init, | |
536 | .cleanup = hw_cleanup, | |
61136ea6 | 537 | .scan = hw_scan, |
811deee4 | 538 | .dev_list = hw_dev_list, |
e7eb703f UH |
539 | .dev_open = hw_dev_open, |
540 | .dev_close = hw_dev_close, | |
dfb0fa1a | 541 | .info_get = hw_info_get, |
a9a245b4 | 542 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
543 | .dev_acquisition_start = hw_dev_acquisition_start, |
544 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
b4750a3a | 545 | .priv = NULL, |
6239c175 | 546 | }; |