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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 | |
29cbfeaf | 66 | /* FIXME: Should not be global. */ |
d35aaf02 | 67 | |
455b26ed | 68 | struct context { |
e15f48c2 | 69 | int pipe_fds[2]; |
249ae2be | 70 | GIOChannel *channels[2]; |
e15f48c2 BV |
71 | uint8_t sample_generator; |
72 | uint8_t thread_running; | |
73 | uint64_t samples_counter; | |
bb7ef793 | 74 | int dev_index; |
3cd3a20b | 75 | void *session_dev_id; |
b9cc3629 | 76 | GTimer *timer; |
e15f48c2 | 77 | }; |
85b5af06 | 78 | |
915f7cc8 | 79 | static const int hwcaps[] = { |
5a2326a7 | 80 | SR_HWCAP_LOGIC_ANALYZER, |
bb7ef793 | 81 | SR_HWCAP_DEMO_DEV, |
4bfbf9fc | 82 | SR_HWCAP_SAMPLERATE, |
5a2326a7 UH |
83 | SR_HWCAP_PATTERN_MODE, |
84 | SR_HWCAP_LIMIT_SAMPLES, | |
85 | SR_HWCAP_LIMIT_MSEC, | |
86 | SR_HWCAP_CONTINUOUS, | |
6239c175 UH |
87 | }; |
88 | ||
a533743d | 89 | static const struct sr_samplerates samplerates = { |
c9140419 | 90 | SR_HZ(1), |
59df0c77 | 91 | SR_GHZ(1), |
c9140419 | 92 | SR_HZ(1), |
4bfbf9fc BV |
93 | NULL, |
94 | }; | |
95 | ||
c8f4624d | 96 | static const char *pattern_strings[] = { |
c03ed397 | 97 | "sigrok", |
e15f48c2 BV |
98 | "random", |
99 | "incremental", | |
c03ed397 UH |
100 | "all-low", |
101 | "all-high", | |
02440dd8 | 102 | NULL, |
85b5af06 UH |
103 | }; |
104 | ||
d261dbbf | 105 | /* We name the probes 0-7 on our demo driver. */ |
464d12c7 KS |
106 | static const char *probe_names[NUM_PROBES + 1] = { |
107 | "0", | |
108 | "1", | |
109 | "2", | |
110 | "3", | |
111 | "4", | |
112 | "5", | |
113 | "6", | |
114 | "7", | |
115 | NULL, | |
116 | }; | |
117 | ||
c8f4624d | 118 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
119 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
120 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
121 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
122 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
123 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
124 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
125 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
126 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
127 | }; | |
128 | ||
ea9cfed7 UH |
129 | /* Private, per-device-instance driver context. */ |
130 | /* TODO: struct context as with the other drivers. */ | |
131 | ||
e7eb703f | 132 | /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */ |
dcf03d6d BV |
133 | SR_PRIV struct sr_dev_driver demo_driver_info; |
134 | static struct sr_dev_driver *ddi = &demo_driver_info; | |
59df0c77 | 135 | static uint64_t cur_samplerate = SR_KHZ(200); |
b9cc3629 BV |
136 | static uint64_t limit_samples = 0; |
137 | static uint64_t limit_msec = 0; | |
c8f4624d | 138 | static int default_pattern = PATTERN_SIGROK; |
b9cc3629 BV |
139 | static GThread *my_thread; |
140 | static int thread_running; | |
6239c175 | 141 | |
3cd3a20b | 142 | static int hw_dev_acquisition_stop(int dev_index, void *cb_data); |
6239c175 | 143 | |
40dda2c3 | 144 | static int hw_init(void) |
61136ea6 BV |
145 | { |
146 | ||
147 | /* Nothing to do. */ | |
148 | ||
149 | return SR_OK; | |
150 | } | |
151 | ||
067d0716 | 152 | static GSList *hw_scan(GSList *options) |
6239c175 | 153 | { |
d68e2d1a | 154 | struct sr_dev_inst *sdi; |
067d0716 BV |
155 | GSList *devices; |
156 | ||
157 | (void)options; | |
158 | devices = NULL; | |
85b5af06 | 159 | |
d3683c42 | 160 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL); |
c03ed397 | 161 | if (!sdi) { |
d68e2d1a | 162 | sr_err("demo: %s: sr_dev_inst_new failed", __func__); |
85b5af06 | 163 | return 0; |
c03ed397 | 164 | } |
7dfcf010 | 165 | sdi->driver = ddi; |
e15f48c2 | 166 | |
067d0716 | 167 | devices = g_slist_append(devices, sdi); |
dcf03d6d | 168 | ddi->instances = g_slist_append(ddi->instances, sdi); |
85b5af06 | 169 | |
067d0716 | 170 | return devices; |
6239c175 UH |
171 | } |
172 | ||
25a0f108 | 173 | static int hw_dev_open(struct sr_dev_inst *sdi) |
6239c175 | 174 | { |
17e1afcb | 175 | /* Avoid compiler warnings. */ |
25a0f108 | 176 | (void)sdi; |
6239c175 UH |
177 | |
178 | /* Nothing needed so far. */ | |
697785d1 | 179 | |
e46b8fb1 | 180 | return SR_OK; |
6239c175 UH |
181 | } |
182 | ||
25a0f108 | 183 | static int hw_dev_close(struct sr_dev_inst *sdi) |
6239c175 | 184 | { |
17e1afcb | 185 | /* Avoid compiler warnings. */ |
25a0f108 | 186 | (void)sdi; |
6239c175 UH |
187 | |
188 | /* Nothing needed so far. */ | |
697785d1 UH |
189 | |
190 | return SR_OK; | |
6239c175 UH |
191 | } |
192 | ||
57ab7d9f | 193 | static int hw_cleanup(void) |
6239c175 UH |
194 | { |
195 | /* Nothing needed so far. */ | |
57ab7d9f | 196 | return SR_OK; |
6239c175 UH |
197 | } |
198 | ||
dfb0fa1a BV |
199 | static int hw_info_get(int info_id, const void **data, |
200 | const struct sr_dev_inst *sdi) | |
6239c175 | 201 | { |
85b5af06 | 202 | |
dfb0fa1a | 203 | switch (info_id) { |
1d9a8a5f | 204 | case SR_DI_INST: |
dfb0fa1a | 205 | *data = sdi; |
6239c175 | 206 | break; |
46c7a4da BV |
207 | case SR_DI_HWCAPS: |
208 | *data = hwcaps; | |
209 | break; | |
5a2326a7 | 210 | case SR_DI_NUM_PROBES: |
dfb0fa1a | 211 | *data = GINT_TO_POINTER(NUM_PROBES); |
6239c175 | 212 | break; |
464d12c7 | 213 | case SR_DI_PROBE_NAMES: |
dfb0fa1a | 214 | *data = probe_names; |
464d12c7 | 215 | break; |
4bfbf9fc | 216 | case SR_DI_SAMPLERATES: |
dfb0fa1a | 217 | *data = &samplerates; |
4bfbf9fc | 218 | break; |
5a2326a7 | 219 | case SR_DI_CUR_SAMPLERATE: |
dfb0fa1a | 220 | *data = &cur_samplerate; |
6239c175 | 221 | break; |
eb0a3731 | 222 | case SR_DI_PATTERNS: |
dfb0fa1a | 223 | *data = &pattern_strings; |
e15f48c2 | 224 | break; |
7dfcf010 BV |
225 | default: |
226 | return SR_ERR_ARG; | |
6239c175 UH |
227 | } |
228 | ||
dfb0fa1a | 229 | return SR_OK; |
6239c175 UH |
230 | } |
231 | ||
e7eb703f | 232 | static int hw_dev_status_get(int dev_index) |
6239c175 | 233 | { |
17e1afcb | 234 | /* Avoid compiler warnings. */ |
bb7ef793 | 235 | (void)dev_index; |
5096c6a6 | 236 | |
5a2326a7 | 237 | return SR_ST_ACTIVE; |
6239c175 UH |
238 | } |
239 | ||
6f4b1868 BV |
240 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
241 | const void *value) | |
6239c175 UH |
242 | { |
243 | int ret; | |
1b79df2f | 244 | const char *stropt; |
6239c175 | 245 | |
6f4b1868 | 246 | (void)sdi; |
6239c175 | 247 | |
ffedd0bf | 248 | if (hwcap == SR_HWCAP_PROBECONFIG) { |
d81d2933 BV |
249 | /* Nothing to do, but must be supported */ |
250 | ret = SR_OK; | |
ffedd0bf | 251 | } else if (hwcap == SR_HWCAP_SAMPLERATE) { |
1b79df2f | 252 | cur_samplerate = *(const uint64_t *)value; |
6f422264 UH |
253 | sr_dbg("demo: %s: setting samplerate to %" PRIu64, __func__, |
254 | cur_samplerate); | |
e46b8fb1 | 255 | ret = SR_OK; |
ffedd0bf | 256 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { |
8489264f | 257 | limit_msec = 0; |
1b79df2f | 258 | limit_samples = *(const uint64_t *)value; |
6f422264 UH |
259 | sr_dbg("demo: %s: setting limit_samples to %" PRIu64, __func__, |
260 | limit_samples); | |
e46b8fb1 | 261 | ret = SR_OK; |
ffedd0bf | 262 | } else if (hwcap == SR_HWCAP_LIMIT_MSEC) { |
1b79df2f | 263 | limit_msec = *(const uint64_t *)value; |
8489264f | 264 | limit_samples = 0; |
6f422264 UH |
265 | sr_dbg("demo: %s: setting limit_msec to %" PRIu64, __func__, |
266 | limit_msec); | |
e46b8fb1 | 267 | ret = SR_OK; |
ffedd0bf | 268 | } else if (hwcap == SR_HWCAP_PATTERN_MODE) { |
e15f48c2 | 269 | stropt = value; |
c03ed397 UH |
270 | ret = SR_OK; |
271 | if (!strcmp(stropt, "sigrok")) { | |
272 | default_pattern = PATTERN_SIGROK; | |
273 | } else if (!strcmp(stropt, "random")) { | |
c8f4624d | 274 | default_pattern = PATTERN_RANDOM; |
e15f48c2 | 275 | } else if (!strcmp(stropt, "incremental")) { |
c8f4624d | 276 | default_pattern = PATTERN_INC; |
c03ed397 UH |
277 | } else if (!strcmp(stropt, "all-low")) { |
278 | default_pattern = PATTERN_ALL_LOW; | |
279 | } else if (!strcmp(stropt, "all-high")) { | |
280 | default_pattern = PATTERN_ALL_HIGH; | |
e15f48c2 | 281 | } else { |
e46b8fb1 | 282 | ret = SR_ERR; |
e15f48c2 | 283 | } |
c8f4624d UH |
284 | sr_dbg("demo: %s: setting pattern to %d", __func__, |
285 | default_pattern); | |
6239c175 | 286 | } else { |
e46b8fb1 | 287 | ret = SR_ERR; |
6239c175 UH |
288 | } |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
5096c6a6 | 293 | static void samples_generator(uint8_t *buf, uint64_t size, void *data) |
85b5af06 | 294 | { |
cddd1c5f | 295 | static uint64_t p = 0; |
455b26ed | 296 | struct context *ctx = data; |
cddd1c5f | 297 | uint64_t i; |
85b5af06 | 298 | |
c03ed397 | 299 | /* TODO: Needed? */ |
5096c6a6 | 300 | memset(buf, 0, size); |
85b5af06 | 301 | |
ab331b67 | 302 | switch (ctx->sample_generator) { |
c03ed397 | 303 | case PATTERN_SIGROK: /* sigrok pattern */ |
917e0e71 | 304 | for (i = 0; i < size; i++) { |
c8f4624d | 305 | *(buf + i) = ~(pattern_sigrok[p] >> 1); |
917e0e71 BV |
306 | if (++p == 64) |
307 | p = 0; | |
308 | } | |
309 | break; | |
c8f4624d | 310 | case PATTERN_RANDOM: /* Random */ |
5096c6a6 UH |
311 | for (i = 0; i < size; i++) |
312 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 | 313 | break; |
c8f4624d | 314 | case PATTERN_INC: /* Simple increment */ |
5096c6a6 | 315 | for (i = 0; i < size; i++) |
85b5af06 UH |
316 | *(buf + i) = i; |
317 | break; | |
c03ed397 | 318 | case PATTERN_ALL_LOW: /* All probes are low */ |
5a9660dd | 319 | memset(buf, 0x00, size); |
c03ed397 UH |
320 | break; |
321 | case PATTERN_ALL_HIGH: /* All probes are high */ | |
5a9660dd | 322 | memset(buf, 0xff, size); |
c03ed397 UH |
323 | break; |
324 | default: | |
0abee507 | 325 | sr_err("demo: %s: unknown pattern %d", __func__, |
ab331b67 | 326 | ctx->sample_generator); |
c03ed397 | 327 | break; |
85b5af06 UH |
328 | } |
329 | } | |
330 | ||
331 | /* Thread function */ | |
332 | static void thread_func(void *data) | |
333 | { | |
455b26ed | 334 | struct context *ctx = data; |
85b5af06 UH |
335 | uint8_t buf[BUFSIZE]; |
336 | uint64_t nb_to_send = 0; | |
d35aaf02 | 337 | int bytes_written; |
1924f59f HE |
338 | double time_cur, time_last, time_diff; |
339 | ||
ab331b67 | 340 | time_last = g_timer_elapsed(ctx->timer, NULL); |
85b5af06 UH |
341 | |
342 | while (thread_running) { | |
1924f59f | 343 | /* Rate control */ |
ab331b67 | 344 | time_cur = g_timer_elapsed(ctx->timer, NULL); |
1924f59f HE |
345 | |
346 | time_diff = time_cur - time_last; | |
347 | time_last = time_cur; | |
348 | ||
349 | nb_to_send = cur_samplerate * time_diff; | |
350 | ||
c03ed397 | 351 | if (limit_samples) { |
1924f59f | 352 | nb_to_send = MIN(nb_to_send, |
ab331b67 | 353 | limit_samples - ctx->samples_counter); |
c03ed397 | 354 | } |
1924f59f HE |
355 | |
356 | /* Make sure we don't overflow. */ | |
357 | nb_to_send = MIN(nb_to_send, BUFSIZE); | |
358 | ||
359 | if (nb_to_send) { | |
360 | samples_generator(buf, nb_to_send, data); | |
ab331b67 | 361 | ctx->samples_counter += nb_to_send; |
070befcd | 362 | |
249ae2be | 363 | g_io_channel_write_chars(ctx->channels[1], (gchar *)&buf, |
c03ed397 | 364 | nb_to_send, (gsize *)&bytes_written, NULL); |
b9cc3629 BV |
365 | } |
366 | ||
1924f59f HE |
367 | /* Check if we're done. */ |
368 | if ((limit_msec && time_cur * 1000 > limit_msec) || | |
ab331b67 | 369 | (limit_samples && ctx->samples_counter >= limit_samples)) |
1924f59f | 370 | { |
ab331b67 | 371 | close(ctx->pipe_fds[1]); |
85b5af06 | 372 | thread_running = 0; |
85b5af06 UH |
373 | } |
374 | ||
1924f59f | 375 | g_usleep(10); |
85b5af06 UH |
376 | } |
377 | } | |
378 | ||
379 | /* Callback handling data */ | |
1f9813eb | 380 | static int receive_data(int fd, int revents, void *cb_data) |
85b5af06 | 381 | { |
249ae2be | 382 | struct context *ctx = cb_data; |
b9c735a2 | 383 | struct sr_datafeed_packet packet; |
9c939c51 BV |
384 | struct sr_datafeed_logic logic; |
385 | static uint64_t samples_received = 0; | |
386 | unsigned char c[BUFSIZE]; | |
108a5bfb | 387 | gsize z; |
1924f59f | 388 | |
26ce0bbf | 389 | /* Avoid compiler warnings. */ |
cb93f8a9 UH |
390 | (void)fd; |
391 | (void)revents; | |
1924f59f HE |
392 | |
393 | do { | |
249ae2be | 394 | g_io_channel_read_chars(ctx->channels[0], |
070befcd | 395 | (gchar *)&c, BUFSIZE, &z, NULL); |
1924f59f HE |
396 | |
397 | if (z > 0) { | |
5a2326a7 | 398 | packet.type = SR_DF_LOGIC; |
9c939c51 | 399 | packet.payload = &logic; |
9c939c51 BV |
400 | logic.length = z; |
401 | logic.unitsize = 1; | |
402 | logic.data = c; | |
249ae2be | 403 | sr_session_send(ctx->session_dev_id, &packet); |
9c939c51 | 404 | samples_received += z; |
1924f59f HE |
405 | } |
406 | } while (z > 0); | |
85b5af06 | 407 | |
c03ed397 UH |
408 | if (!thread_running && z <= 0) { |
409 | /* Make sure we don't receive more packets. */ | |
249ae2be | 410 | g_io_channel_shutdown(ctx->channels[0], FALSE, NULL); |
d35aaf02 | 411 | |
1924f59f | 412 | /* Send last packet. */ |
5a2326a7 | 413 | packet.type = SR_DF_END; |
249ae2be | 414 | sr_session_send(ctx->session_dev_id, &packet); |
1924f59f HE |
415 | |
416 | return FALSE; | |
85b5af06 | 417 | } |
1924f59f | 418 | |
85b5af06 UH |
419 | return TRUE; |
420 | } | |
421 | ||
3cd3a20b | 422 | static int hw_dev_acquisition_start(int dev_index, void *cb_data) |
6239c175 | 423 | { |
b9c735a2 UH |
424 | struct sr_datafeed_packet *packet; |
425 | struct sr_datafeed_header *header; | |
f366e86c | 426 | struct sr_datafeed_meta_logic meta; |
455b26ed | 427 | struct context *ctx; |
6239c175 | 428 | |
ab331b67 | 429 | /* TODO: 'ctx' is never g_free()'d? */ |
455b26ed | 430 | if (!(ctx = g_try_malloc(sizeof(struct context)))) { |
ab331b67 | 431 | sr_err("demo: %s: ctx malloc failed", __func__); |
e46b8fb1 | 432 | return SR_ERR_MALLOC; |
27a3a6fe | 433 | } |
85b5af06 | 434 | |
ab331b67 UH |
435 | ctx->sample_generator = default_pattern; |
436 | ctx->session_dev_id = cb_data; | |
437 | ctx->dev_index = dev_index; | |
438 | ctx->samples_counter = 0; | |
85b5af06 | 439 | |
ab331b67 | 440 | if (pipe(ctx->pipe_fds)) { |
c03ed397 UH |
441 | /* TODO: Better error message. */ |
442 | sr_err("demo: %s: pipe() failed", __func__); | |
e46b8fb1 | 443 | return SR_ERR; |
c03ed397 | 444 | } |
85b5af06 | 445 | |
249ae2be LPC |
446 | ctx->channels[0] = g_io_channel_unix_new(ctx->pipe_fds[0]); |
447 | ctx->channels[1] = g_io_channel_unix_new(ctx->pipe_fds[1]); | |
d35aaf02 | 448 | |
e6e8f8e0 LPC |
449 | g_io_channel_set_flags(ctx->channels[0], G_IO_FLAG_NONBLOCK, NULL); |
450 | ||
d35aaf02 | 451 | /* Set channel encoding to binary (default is UTF-8). */ |
249ae2be LPC |
452 | g_io_channel_set_encoding(ctx->channels[0], NULL, NULL); |
453 | g_io_channel_set_encoding(ctx->channels[1], NULL, NULL); | |
d35aaf02 UH |
454 | |
455 | /* Make channels to unbuffered. */ | |
249ae2be LPC |
456 | g_io_channel_set_buffered(ctx->channels[0], FALSE); |
457 | g_io_channel_set_buffered(ctx->channels[1], FALSE); | |
d35aaf02 | 458 | |
249ae2be LPC |
459 | sr_session_source_add_channel(ctx->channels[0], G_IO_IN | G_IO_ERR, |
460 | 40, receive_data, ctx); | |
85b5af06 UH |
461 | |
462 | /* Run the demo thread. */ | |
463 | g_thread_init(NULL); | |
c03ed397 | 464 | /* This must to be done between g_thread_init() & g_thread_create(). */ |
ab331b67 | 465 | ctx->timer = g_timer_new(); |
85b5af06 UH |
466 | thread_running = 1; |
467 | my_thread = | |
ab331b67 | 468 | g_thread_create((GThreadFunc)thread_func, ctx, TRUE, NULL); |
c03ed397 UH |
469 | if (!my_thread) { |
470 | sr_err("demo: %s: g_thread_create failed", __func__); | |
471 | return SR_ERR; /* TODO */ | |
472 | } | |
6239c175 | 473 | |
27a3a6fe UH |
474 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
475 | sr_err("demo: %s: packet malloc failed", __func__); | |
e46b8fb1 | 476 | return SR_ERR_MALLOC; |
27a3a6fe UH |
477 | } |
478 | ||
479 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
480 | sr_err("demo: %s: header malloc failed", __func__); | |
481 | return SR_ERR_MALLOC; | |
482 | } | |
6239c175 | 483 | |
5a2326a7 | 484 | packet->type = SR_DF_HEADER; |
9c939c51 | 485 | packet->payload = header; |
6239c175 UH |
486 | header->feed_version = 1; |
487 | gettimeofday(&header->starttime, NULL); | |
ab331b67 | 488 | sr_session_send(ctx->session_dev_id, packet); |
f366e86c BV |
489 | |
490 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
491 | packet->type = SR_DF_META_LOGIC; | |
492 | packet->payload = &meta; | |
493 | meta.samplerate = cur_samplerate; | |
494 | meta.num_probes = NUM_PROBES; | |
495 | sr_session_send(ctx->session_dev_id, packet); | |
496 | ||
27a3a6fe UH |
497 | g_free(header); |
498 | g_free(packet); | |
6239c175 | 499 | |
e46b8fb1 | 500 | return SR_OK; |
6239c175 UH |
501 | } |
502 | ||
3cd3a20b UH |
503 | /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ |
504 | static int hw_dev_acquisition_stop(int dev_index, void *cb_data) | |
6239c175 | 505 | { |
17e1afcb | 506 | /* Avoid compiler warnings. */ |
bb7ef793 | 507 | (void)dev_index; |
3cd3a20b | 508 | (void)cb_data; |
6239c175 | 509 | |
1924f59f HE |
510 | /* Stop generate thread. */ |
511 | thread_running = 0; | |
3010f21c UH |
512 | |
513 | return SR_OK; | |
6239c175 UH |
514 | } |
515 | ||
c09f0b57 | 516 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
517 | .name = "demo", |
518 | .longname = "Demo driver and pattern generator", | |
519 | .api_version = 1, | |
520 | .init = hw_init, | |
521 | .cleanup = hw_cleanup, | |
61136ea6 | 522 | .scan = hw_scan, |
e7eb703f UH |
523 | .dev_open = hw_dev_open, |
524 | .dev_close = hw_dev_close, | |
dfb0fa1a | 525 | .info_get = hw_info_get, |
e7eb703f | 526 | .dev_status_get = hw_dev_status_get, |
a9a245b4 | 527 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
528 | .dev_acquisition_start = hw_dev_acquisition_start, |
529 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
dcf03d6d | 530 | .instances = NULL, |
6239c175 | 531 | }; |