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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. */ |
3d2efd7d | 67 | SR_PRIV GIOChannel *channels[2]; |
d35aaf02 | 68 | |
455b26ed | 69 | struct context { |
e15f48c2 BV |
70 | int pipe_fds[2]; |
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(). */ |
d68e2d1a | 133 | static GSList *dev_insts = NULL; |
59df0c77 | 134 | static uint64_t cur_samplerate = SR_KHZ(200); |
b9cc3629 BV |
135 | static uint64_t limit_samples = 0; |
136 | static uint64_t limit_msec = 0; | |
c8f4624d | 137 | static int default_pattern = PATTERN_SIGROK; |
b9cc3629 BV |
138 | static GThread *my_thread; |
139 | static int thread_running; | |
6239c175 | 140 | |
3cd3a20b | 141 | static int hw_dev_acquisition_stop(int dev_index, void *cb_data); |
6239c175 | 142 | |
bb7ef793 | 143 | static int hw_init(const char *devinfo) |
6239c175 | 144 | { |
d68e2d1a | 145 | struct sr_dev_inst *sdi; |
85b5af06 | 146 | |
e15f48c2 | 147 | /* Avoid compiler warnings. */ |
bb7ef793 | 148 | (void)devinfo; |
85b5af06 | 149 | |
d3683c42 | 150 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL); |
c03ed397 | 151 | if (!sdi) { |
d68e2d1a | 152 | sr_err("demo: %s: sr_dev_inst_new failed", __func__); |
85b5af06 | 153 | return 0; |
c03ed397 | 154 | } |
e15f48c2 | 155 | |
d68e2d1a | 156 | dev_insts = g_slist_append(dev_insts, sdi); |
85b5af06 UH |
157 | |
158 | return 1; | |
6239c175 UH |
159 | } |
160 | ||
e7eb703f | 161 | static int hw_dev_open(int dev_index) |
6239c175 | 162 | { |
17e1afcb | 163 | /* Avoid compiler warnings. */ |
bb7ef793 | 164 | (void)dev_index; |
6239c175 UH |
165 | |
166 | /* Nothing needed so far. */ | |
697785d1 | 167 | |
e46b8fb1 | 168 | return SR_OK; |
6239c175 UH |
169 | } |
170 | ||
e7eb703f | 171 | static int hw_dev_close(int dev_index) |
6239c175 | 172 | { |
17e1afcb | 173 | /* Avoid compiler warnings. */ |
bb7ef793 | 174 | (void)dev_index; |
6239c175 UH |
175 | |
176 | /* Nothing needed so far. */ | |
697785d1 UH |
177 | |
178 | return SR_OK; | |
6239c175 UH |
179 | } |
180 | ||
57ab7d9f | 181 | static int hw_cleanup(void) |
6239c175 UH |
182 | { |
183 | /* Nothing needed so far. */ | |
57ab7d9f | 184 | return SR_OK; |
6239c175 UH |
185 | } |
186 | ||
b7f578be | 187 | static const void *hw_dev_info_get(int dev_index, int dev_info_id) |
6239c175 | 188 | { |
d68e2d1a | 189 | struct sr_dev_inst *sdi; |
b7f578be | 190 | const void *info = NULL; |
85b5af06 | 191 | |
bb7ef793 | 192 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
c03ed397 | 193 | sr_err("demo: %s: sdi was NULL", __func__); |
85b5af06 | 194 | return NULL; |
c03ed397 | 195 | } |
85b5af06 | 196 | |
bb7ef793 | 197 | switch (dev_info_id) { |
1d9a8a5f | 198 | case SR_DI_INST: |
85b5af06 | 199 | info = sdi; |
6239c175 | 200 | break; |
5a2326a7 | 201 | case SR_DI_NUM_PROBES: |
6239c175 UH |
202 | info = GINT_TO_POINTER(NUM_PROBES); |
203 | break; | |
464d12c7 KS |
204 | case SR_DI_PROBE_NAMES: |
205 | info = probe_names; | |
206 | break; | |
4bfbf9fc BV |
207 | case SR_DI_SAMPLERATES: |
208 | info = &samplerates; | |
209 | break; | |
5a2326a7 | 210 | case SR_DI_CUR_SAMPLERATE: |
6239c175 UH |
211 | info = &cur_samplerate; |
212 | break; | |
eb0a3731 | 213 | case SR_DI_PATTERNS: |
c8f4624d | 214 | info = &pattern_strings; |
e15f48c2 | 215 | break; |
6239c175 UH |
216 | } |
217 | ||
218 | return info; | |
219 | } | |
220 | ||
e7eb703f | 221 | static int hw_dev_status_get(int dev_index) |
6239c175 | 222 | { |
17e1afcb | 223 | /* Avoid compiler warnings. */ |
bb7ef793 | 224 | (void)dev_index; |
5096c6a6 | 225 | |
5a2326a7 | 226 | return SR_ST_ACTIVE; |
6239c175 UH |
227 | } |
228 | ||
915f7cc8 | 229 | static const int *hw_hwcap_get_all(void) |
6239c175 | 230 | { |
ffedd0bf | 231 | return hwcaps; |
6239c175 UH |
232 | } |
233 | ||
1b79df2f | 234 | static int hw_dev_config_set(int dev_index, int hwcap, const void *value) |
6239c175 UH |
235 | { |
236 | int ret; | |
1b79df2f | 237 | const char *stropt; |
6239c175 | 238 | |
17e1afcb | 239 | /* Avoid compiler warnings. */ |
bb7ef793 | 240 | (void)dev_index; |
6239c175 | 241 | |
ffedd0bf | 242 | if (hwcap == SR_HWCAP_PROBECONFIG) { |
d81d2933 BV |
243 | /* Nothing to do, but must be supported */ |
244 | ret = SR_OK; | |
ffedd0bf | 245 | } else if (hwcap == SR_HWCAP_SAMPLERATE) { |
1b79df2f | 246 | cur_samplerate = *(const uint64_t *)value; |
6f422264 UH |
247 | sr_dbg("demo: %s: setting samplerate to %" PRIu64, __func__, |
248 | cur_samplerate); | |
e46b8fb1 | 249 | ret = SR_OK; |
ffedd0bf | 250 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { |
8489264f | 251 | limit_msec = 0; |
1b79df2f | 252 | limit_samples = *(const uint64_t *)value; |
6f422264 UH |
253 | sr_dbg("demo: %s: setting limit_samples to %" PRIu64, __func__, |
254 | limit_samples); | |
e46b8fb1 | 255 | ret = SR_OK; |
ffedd0bf | 256 | } else if (hwcap == SR_HWCAP_LIMIT_MSEC) { |
1b79df2f | 257 | limit_msec = *(const uint64_t *)value; |
8489264f | 258 | limit_samples = 0; |
6f422264 UH |
259 | sr_dbg("demo: %s: setting limit_msec to %" PRIu64, __func__, |
260 | limit_msec); | |
e46b8fb1 | 261 | ret = SR_OK; |
ffedd0bf | 262 | } else if (hwcap == SR_HWCAP_PATTERN_MODE) { |
e15f48c2 | 263 | stropt = value; |
c03ed397 UH |
264 | ret = SR_OK; |
265 | if (!strcmp(stropt, "sigrok")) { | |
266 | default_pattern = PATTERN_SIGROK; | |
267 | } else if (!strcmp(stropt, "random")) { | |
c8f4624d | 268 | default_pattern = PATTERN_RANDOM; |
e15f48c2 | 269 | } else if (!strcmp(stropt, "incremental")) { |
c8f4624d | 270 | default_pattern = PATTERN_INC; |
c03ed397 UH |
271 | } else if (!strcmp(stropt, "all-low")) { |
272 | default_pattern = PATTERN_ALL_LOW; | |
273 | } else if (!strcmp(stropt, "all-high")) { | |
274 | default_pattern = PATTERN_ALL_HIGH; | |
e15f48c2 | 275 | } else { |
e46b8fb1 | 276 | ret = SR_ERR; |
e15f48c2 | 277 | } |
c8f4624d UH |
278 | sr_dbg("demo: %s: setting pattern to %d", __func__, |
279 | default_pattern); | |
6239c175 | 280 | } else { |
e46b8fb1 | 281 | ret = SR_ERR; |
6239c175 UH |
282 | } |
283 | ||
284 | return ret; | |
285 | } | |
286 | ||
5096c6a6 | 287 | static void samples_generator(uint8_t *buf, uint64_t size, void *data) |
85b5af06 | 288 | { |
cddd1c5f | 289 | static uint64_t p = 0; |
455b26ed | 290 | struct context *ctx = data; |
cddd1c5f | 291 | uint64_t i; |
85b5af06 | 292 | |
c03ed397 | 293 | /* TODO: Needed? */ |
5096c6a6 | 294 | memset(buf, 0, size); |
85b5af06 | 295 | |
ab331b67 | 296 | switch (ctx->sample_generator) { |
c03ed397 | 297 | case PATTERN_SIGROK: /* sigrok pattern */ |
917e0e71 | 298 | for (i = 0; i < size; i++) { |
c8f4624d | 299 | *(buf + i) = ~(pattern_sigrok[p] >> 1); |
917e0e71 BV |
300 | if (++p == 64) |
301 | p = 0; | |
302 | } | |
303 | break; | |
c8f4624d | 304 | case PATTERN_RANDOM: /* Random */ |
5096c6a6 UH |
305 | for (i = 0; i < size; i++) |
306 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 | 307 | break; |
c8f4624d | 308 | case PATTERN_INC: /* Simple increment */ |
5096c6a6 | 309 | for (i = 0; i < size; i++) |
85b5af06 UH |
310 | *(buf + i) = i; |
311 | break; | |
c03ed397 | 312 | case PATTERN_ALL_LOW: /* All probes are low */ |
5a9660dd | 313 | memset(buf, 0x00, size); |
c03ed397 UH |
314 | break; |
315 | case PATTERN_ALL_HIGH: /* All probes are high */ | |
5a9660dd | 316 | memset(buf, 0xff, size); |
c03ed397 UH |
317 | break; |
318 | default: | |
0abee507 | 319 | sr_err("demo: %s: unknown pattern %d", __func__, |
ab331b67 | 320 | ctx->sample_generator); |
c03ed397 | 321 | break; |
85b5af06 UH |
322 | } |
323 | } | |
324 | ||
325 | /* Thread function */ | |
326 | static void thread_func(void *data) | |
327 | { | |
455b26ed | 328 | struct context *ctx = data; |
85b5af06 UH |
329 | uint8_t buf[BUFSIZE]; |
330 | uint64_t nb_to_send = 0; | |
d35aaf02 | 331 | int bytes_written; |
1924f59f HE |
332 | double time_cur, time_last, time_diff; |
333 | ||
ab331b67 | 334 | time_last = g_timer_elapsed(ctx->timer, NULL); |
85b5af06 UH |
335 | |
336 | while (thread_running) { | |
1924f59f | 337 | /* Rate control */ |
ab331b67 | 338 | time_cur = g_timer_elapsed(ctx->timer, NULL); |
1924f59f HE |
339 | |
340 | time_diff = time_cur - time_last; | |
341 | time_last = time_cur; | |
342 | ||
343 | nb_to_send = cur_samplerate * time_diff; | |
344 | ||
c03ed397 | 345 | if (limit_samples) { |
1924f59f | 346 | nb_to_send = MIN(nb_to_send, |
ab331b67 | 347 | limit_samples - ctx->samples_counter); |
c03ed397 | 348 | } |
1924f59f HE |
349 | |
350 | /* Make sure we don't overflow. */ | |
351 | nb_to_send = MIN(nb_to_send, BUFSIZE); | |
352 | ||
353 | if (nb_to_send) { | |
354 | samples_generator(buf, nb_to_send, data); | |
ab331b67 | 355 | ctx->samples_counter += nb_to_send; |
070befcd BV |
356 | |
357 | g_io_channel_write_chars(channels[1], (gchar *)&buf, | |
c03ed397 | 358 | nb_to_send, (gsize *)&bytes_written, NULL); |
b9cc3629 BV |
359 | } |
360 | ||
1924f59f HE |
361 | /* Check if we're done. */ |
362 | if ((limit_msec && time_cur * 1000 > limit_msec) || | |
ab331b67 | 363 | (limit_samples && ctx->samples_counter >= limit_samples)) |
1924f59f | 364 | { |
ab331b67 | 365 | close(ctx->pipe_fds[1]); |
85b5af06 | 366 | thread_running = 0; |
85b5af06 UH |
367 | } |
368 | ||
1924f59f | 369 | g_usleep(10); |
85b5af06 UH |
370 | } |
371 | } | |
372 | ||
373 | /* Callback handling data */ | |
1f9813eb | 374 | static int receive_data(int fd, int revents, void *cb_data) |
85b5af06 | 375 | { |
b9c735a2 | 376 | struct sr_datafeed_packet packet; |
9c939c51 BV |
377 | struct sr_datafeed_logic logic; |
378 | static uint64_t samples_received = 0; | |
379 | unsigned char c[BUFSIZE]; | |
108a5bfb | 380 | gsize z; |
1924f59f | 381 | |
26ce0bbf | 382 | /* Avoid compiler warnings. */ |
cb93f8a9 UH |
383 | (void)fd; |
384 | (void)revents; | |
1924f59f HE |
385 | |
386 | do { | |
387 | g_io_channel_read_chars(channels[0], | |
070befcd | 388 | (gchar *)&c, BUFSIZE, &z, NULL); |
1924f59f HE |
389 | |
390 | if (z > 0) { | |
5a2326a7 | 391 | packet.type = SR_DF_LOGIC; |
9c939c51 | 392 | packet.payload = &logic; |
9c939c51 BV |
393 | logic.length = z; |
394 | logic.unitsize = 1; | |
395 | logic.data = c; | |
1f9813eb | 396 | sr_session_send(cb_data, &packet); |
9c939c51 | 397 | samples_received += z; |
1924f59f HE |
398 | } |
399 | } while (z > 0); | |
85b5af06 | 400 | |
c03ed397 UH |
401 | if (!thread_running && z <= 0) { |
402 | /* Make sure we don't receive more packets. */ | |
993526f8 | 403 | g_io_channel_shutdown(channels[0], FALSE, NULL); |
d35aaf02 | 404 | |
1924f59f | 405 | /* Send last packet. */ |
5a2326a7 | 406 | packet.type = SR_DF_END; |
1f9813eb | 407 | sr_session_send(cb_data, &packet); |
1924f59f HE |
408 | |
409 | return FALSE; | |
85b5af06 | 410 | } |
1924f59f | 411 | |
85b5af06 UH |
412 | return TRUE; |
413 | } | |
414 | ||
3cd3a20b | 415 | static int hw_dev_acquisition_start(int dev_index, void *cb_data) |
6239c175 | 416 | { |
b9c735a2 UH |
417 | struct sr_datafeed_packet *packet; |
418 | struct sr_datafeed_header *header; | |
f366e86c | 419 | struct sr_datafeed_meta_logic meta; |
455b26ed | 420 | struct context *ctx; |
6239c175 | 421 | |
ab331b67 | 422 | /* TODO: 'ctx' is never g_free()'d? */ |
455b26ed | 423 | if (!(ctx = g_try_malloc(sizeof(struct context)))) { |
ab331b67 | 424 | sr_err("demo: %s: ctx malloc failed", __func__); |
e46b8fb1 | 425 | return SR_ERR_MALLOC; |
27a3a6fe | 426 | } |
85b5af06 | 427 | |
ab331b67 UH |
428 | ctx->sample_generator = default_pattern; |
429 | ctx->session_dev_id = cb_data; | |
430 | ctx->dev_index = dev_index; | |
431 | ctx->samples_counter = 0; | |
85b5af06 | 432 | |
ab331b67 | 433 | if (pipe(ctx->pipe_fds)) { |
c03ed397 UH |
434 | /* TODO: Better error message. */ |
435 | sr_err("demo: %s: pipe() failed", __func__); | |
e46b8fb1 | 436 | return SR_ERR; |
c03ed397 | 437 | } |
85b5af06 | 438 | |
ab331b67 UH |
439 | channels[0] = g_io_channel_unix_new(ctx->pipe_fds[0]); |
440 | channels[1] = g_io_channel_unix_new(ctx->pipe_fds[1]); | |
d35aaf02 UH |
441 | |
442 | /* Set channel encoding to binary (default is UTF-8). */ | |
443 | g_io_channel_set_encoding(channels[0], NULL, NULL); | |
444 | g_io_channel_set_encoding(channels[1], NULL, NULL); | |
445 | ||
446 | /* Make channels to unbuffered. */ | |
447 | g_io_channel_set_buffered(channels[0], FALSE); | |
448 | g_io_channel_set_buffered(channels[1], FALSE); | |
449 | ||
ab331b67 UH |
450 | sr_source_add(ctx->pipe_fds[0], G_IO_IN | G_IO_ERR, 40, |
451 | receive_data, ctx->session_dev_id); | |
85b5af06 UH |
452 | |
453 | /* Run the demo thread. */ | |
454 | g_thread_init(NULL); | |
c03ed397 | 455 | /* This must to be done between g_thread_init() & g_thread_create(). */ |
ab331b67 | 456 | ctx->timer = g_timer_new(); |
85b5af06 UH |
457 | thread_running = 1; |
458 | my_thread = | |
ab331b67 | 459 | g_thread_create((GThreadFunc)thread_func, ctx, TRUE, NULL); |
c03ed397 UH |
460 | if (!my_thread) { |
461 | sr_err("demo: %s: g_thread_create failed", __func__); | |
462 | return SR_ERR; /* TODO */ | |
463 | } | |
6239c175 | 464 | |
27a3a6fe UH |
465 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
466 | sr_err("demo: %s: packet malloc failed", __func__); | |
e46b8fb1 | 467 | return SR_ERR_MALLOC; |
27a3a6fe UH |
468 | } |
469 | ||
470 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
471 | sr_err("demo: %s: header malloc failed", __func__); | |
472 | return SR_ERR_MALLOC; | |
473 | } | |
6239c175 | 474 | |
5a2326a7 | 475 | packet->type = SR_DF_HEADER; |
9c939c51 | 476 | packet->payload = header; |
6239c175 UH |
477 | header->feed_version = 1; |
478 | gettimeofday(&header->starttime, NULL); | |
ab331b67 | 479 | sr_session_send(ctx->session_dev_id, packet); |
f366e86c BV |
480 | |
481 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
482 | packet->type = SR_DF_META_LOGIC; | |
483 | packet->payload = &meta; | |
484 | meta.samplerate = cur_samplerate; | |
485 | meta.num_probes = NUM_PROBES; | |
486 | sr_session_send(ctx->session_dev_id, packet); | |
487 | ||
27a3a6fe UH |
488 | g_free(header); |
489 | g_free(packet); | |
6239c175 | 490 | |
e46b8fb1 | 491 | return SR_OK; |
6239c175 UH |
492 | } |
493 | ||
3cd3a20b UH |
494 | /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ |
495 | static int hw_dev_acquisition_stop(int dev_index, void *cb_data) | |
6239c175 | 496 | { |
17e1afcb | 497 | /* Avoid compiler warnings. */ |
bb7ef793 | 498 | (void)dev_index; |
3cd3a20b | 499 | (void)cb_data; |
6239c175 | 500 | |
1924f59f HE |
501 | /* Stop generate thread. */ |
502 | thread_running = 0; | |
3010f21c UH |
503 | |
504 | return SR_OK; | |
6239c175 UH |
505 | } |
506 | ||
c09f0b57 | 507 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
508 | .name = "demo", |
509 | .longname = "Demo driver and pattern generator", | |
510 | .api_version = 1, | |
511 | .init = hw_init, | |
512 | .cleanup = hw_cleanup, | |
e7eb703f UH |
513 | .dev_open = hw_dev_open, |
514 | .dev_close = hw_dev_close, | |
5097b0d0 | 515 | .dev_info_get = hw_dev_info_get, |
e7eb703f | 516 | .dev_status_get = hw_dev_status_get, |
ffedd0bf | 517 | .hwcap_get_all = hw_hwcap_get_all, |
a9a245b4 | 518 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
519 | .dev_acquisition_start = hw_dev_acquisition_start, |
520 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
6239c175 | 521 | }; |