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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> |
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> |
d35aaf02 UH |
26 | #ifdef _WIN32 |
27 | #include <io.h> | |
28 | #include <fcntl.h> | |
29 | #define pipe(fds) _pipe(fds, 4096, _O_BINARY) | |
30 | #endif | |
45c59c8b BV |
31 | #include "libsigrok.h" |
32 | #include "libsigrok-internal.h" | |
6239c175 | 33 | |
92bcedf6 UH |
34 | /* Message logging helpers with driver-specific prefix string. */ |
35 | #define DRIVER_LOG_DOMAIN "demo: " | |
36 | #define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) | |
37 | #define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) | |
38 | #define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) | |
39 | #define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) | |
40 | #define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) | |
41 | #define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) | |
42 | ||
c03ed397 | 43 | /* TODO: Number of probes should be configurable. */ |
e15f48c2 | 44 | #define NUM_PROBES 8 |
c03ed397 | 45 | |
e15f48c2 | 46 | #define DEMONAME "Demo device" |
c03ed397 UH |
47 | |
48 | /* The size of chunks to send through the session bus. */ | |
49 | /* TODO: Should be configurable. */ | |
e15f48c2 | 50 | #define BUFSIZE 4096 |
85b5af06 | 51 | |
0d31276b | 52 | /* Supported patterns which we can generate */ |
e15f48c2 | 53 | enum { |
0d31276b UH |
54 | /** |
55 | * Pattern which spells "sigrok" using '0's (with '1's as "background") | |
56 | * when displayed using the 'bits' output format. | |
57 | */ | |
c8f4624d | 58 | PATTERN_SIGROK, |
0d31276b | 59 | |
c03ed397 | 60 | /** Pattern which consists of (pseudo-)random values on all probes. */ |
c8f4624d | 61 | PATTERN_RANDOM, |
0d31276b UH |
62 | |
63 | /** | |
64 | * Pattern which consists of incrementing numbers. | |
65 | * TODO: Better description. | |
66 | */ | |
c8f4624d | 67 | PATTERN_INC, |
c03ed397 UH |
68 | |
69 | /** Pattern where all probes have a low logic state. */ | |
70 | PATTERN_ALL_LOW, | |
71 | ||
72 | /** Pattern where all probes have a high logic state. */ | |
73 | PATTERN_ALL_HIGH, | |
e15f48c2 | 74 | }; |
85b5af06 | 75 | |
b4750a3a BV |
76 | /* Private, per-device-instance driver context. */ |
77 | struct dev_context { | |
e15f48c2 | 78 | int pipe_fds[2]; |
249ae2be | 79 | GIOChannel *channels[2]; |
e15f48c2 | 80 | uint8_t sample_generator; |
e15f48c2 | 81 | uint64_t samples_counter; |
3cd3a20b | 82 | void *session_dev_id; |
3b203673 | 83 | int64_t starttime; |
e15f48c2 | 84 | }; |
85b5af06 | 85 | |
915f7cc8 | 86 | static const int hwcaps[] = { |
5a2326a7 | 87 | SR_HWCAP_LOGIC_ANALYZER, |
bb7ef793 | 88 | SR_HWCAP_DEMO_DEV, |
4bfbf9fc | 89 | SR_HWCAP_SAMPLERATE, |
5a2326a7 UH |
90 | SR_HWCAP_PATTERN_MODE, |
91 | SR_HWCAP_LIMIT_SAMPLES, | |
92 | SR_HWCAP_LIMIT_MSEC, | |
93 | SR_HWCAP_CONTINUOUS, | |
6239c175 UH |
94 | }; |
95 | ||
a533743d | 96 | static const struct sr_samplerates samplerates = { |
c9140419 | 97 | SR_HZ(1), |
59df0c77 | 98 | SR_GHZ(1), |
c9140419 | 99 | SR_HZ(1), |
4bfbf9fc BV |
100 | NULL, |
101 | }; | |
102 | ||
c8f4624d | 103 | static const char *pattern_strings[] = { |
c03ed397 | 104 | "sigrok", |
e15f48c2 BV |
105 | "random", |
106 | "incremental", | |
c03ed397 UH |
107 | "all-low", |
108 | "all-high", | |
02440dd8 | 109 | NULL, |
85b5af06 UH |
110 | }; |
111 | ||
d261dbbf | 112 | /* We name the probes 0-7 on our demo driver. */ |
464d12c7 KS |
113 | static const char *probe_names[NUM_PROBES + 1] = { |
114 | "0", | |
115 | "1", | |
116 | "2", | |
117 | "3", | |
118 | "4", | |
119 | "5", | |
120 | "6", | |
121 | "7", | |
122 | NULL, | |
123 | }; | |
124 | ||
c8f4624d | 125 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
126 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
127 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
128 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
129 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
130 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
131 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
132 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
133 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
134 | }; | |
135 | ||
ea9cfed7 UH |
136 | /* Private, per-device-instance driver context. */ |
137 | /* TODO: struct context as with the other drivers. */ | |
138 | ||
e7eb703f | 139 | /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */ |
dcf03d6d BV |
140 | SR_PRIV struct sr_dev_driver demo_driver_info; |
141 | static struct sr_dev_driver *ddi = &demo_driver_info; | |
59df0c77 | 142 | static uint64_t cur_samplerate = SR_KHZ(200); |
b9cc3629 BV |
143 | static uint64_t limit_samples = 0; |
144 | static uint64_t limit_msec = 0; | |
c8f4624d | 145 | static int default_pattern = PATTERN_SIGROK; |
6239c175 | 146 | |
69b07d14 | 147 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 148 | |
eebb6067 UH |
149 | static int clear_instances(void) |
150 | { | |
151 | /* Nothing needed so far. */ | |
152 | ||
153 | return SR_OK; | |
154 | } | |
155 | ||
34f06b90 | 156 | static int hw_init(struct sr_context *sr_ctx) |
61136ea6 | 157 | { |
b4750a3a | 158 | struct drv_context *drvc; |
61136ea6 | 159 | |
b4750a3a | 160 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { |
92bcedf6 | 161 | sr_err("Driver context malloc failed."); |
886a52b6 | 162 | return SR_ERR_MALLOC; |
b4750a3a BV |
163 | } |
164 | ddi->priv = drvc; | |
61136ea6 BV |
165 | |
166 | return SR_OK; | |
167 | } | |
168 | ||
067d0716 | 169 | static GSList *hw_scan(GSList *options) |
6239c175 | 170 | { |
d68e2d1a | 171 | struct sr_dev_inst *sdi; |
87ca93c5 | 172 | struct sr_probe *probe; |
b4750a3a | 173 | struct drv_context *drvc; |
067d0716 | 174 | GSList *devices; |
87ca93c5 | 175 | int i; |
067d0716 BV |
176 | |
177 | (void)options; | |
64d33dc2 | 178 | |
b4750a3a | 179 | drvc = ddi->priv; |
067d0716 | 180 | devices = NULL; |
85b5af06 | 181 | |
d3683c42 | 182 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL); |
c03ed397 | 183 | if (!sdi) { |
92bcedf6 | 184 | sr_err("%s: sr_dev_inst_new failed", __func__); |
85b5af06 | 185 | return 0; |
c03ed397 | 186 | } |
7dfcf010 | 187 | sdi->driver = ddi; |
e15f48c2 | 188 | |
87ca93c5 | 189 | for (i = 0; probe_names[i]; i++) { |
de6e0eca | 190 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, |
87ca93c5 BV |
191 | probe_names[i]))) |
192 | return NULL; | |
193 | sdi->probes = g_slist_append(sdi->probes, probe); | |
194 | } | |
195 | ||
067d0716 | 196 | devices = g_slist_append(devices, sdi); |
b4750a3a | 197 | drvc->instances = g_slist_append(drvc->instances, sdi); |
85b5af06 | 198 | |
067d0716 | 199 | return devices; |
6239c175 UH |
200 | } |
201 | ||
811deee4 BV |
202 | static GSList *hw_dev_list(void) |
203 | { | |
204 | struct drv_context *drvc; | |
205 | ||
206 | drvc = ddi->priv; | |
207 | ||
208 | return drvc->instances; | |
209 | } | |
210 | ||
25a0f108 | 211 | static int hw_dev_open(struct sr_dev_inst *sdi) |
6239c175 | 212 | { |
25a0f108 | 213 | (void)sdi; |
6239c175 UH |
214 | |
215 | /* Nothing needed so far. */ | |
697785d1 | 216 | |
e46b8fb1 | 217 | return SR_OK; |
6239c175 UH |
218 | } |
219 | ||
25a0f108 | 220 | static int hw_dev_close(struct sr_dev_inst *sdi) |
6239c175 | 221 | { |
25a0f108 | 222 | (void)sdi; |
6239c175 UH |
223 | |
224 | /* Nothing needed so far. */ | |
697785d1 UH |
225 | |
226 | return SR_OK; | |
6239c175 UH |
227 | } |
228 | ||
57ab7d9f | 229 | static int hw_cleanup(void) |
6239c175 UH |
230 | { |
231 | /* Nothing needed so far. */ | |
57ab7d9f | 232 | return SR_OK; |
6239c175 UH |
233 | } |
234 | ||
dfb0fa1a BV |
235 | static int hw_info_get(int info_id, const void **data, |
236 | const struct sr_dev_inst *sdi) | |
6239c175 | 237 | { |
6f57fd96 BV |
238 | (void)sdi; |
239 | ||
dfb0fa1a | 240 | switch (info_id) { |
46c7a4da BV |
241 | case SR_DI_HWCAPS: |
242 | *data = hwcaps; | |
243 | break; | |
5a2326a7 | 244 | case SR_DI_NUM_PROBES: |
dfb0fa1a | 245 | *data = GINT_TO_POINTER(NUM_PROBES); |
6239c175 | 246 | break; |
464d12c7 | 247 | case SR_DI_PROBE_NAMES: |
dfb0fa1a | 248 | *data = probe_names; |
464d12c7 | 249 | break; |
4bfbf9fc | 250 | case SR_DI_SAMPLERATES: |
dfb0fa1a | 251 | *data = &samplerates; |
4bfbf9fc | 252 | break; |
5a2326a7 | 253 | case SR_DI_CUR_SAMPLERATE: |
dfb0fa1a | 254 | *data = &cur_samplerate; |
6239c175 | 255 | break; |
eb0a3731 | 256 | case SR_DI_PATTERNS: |
dfb0fa1a | 257 | *data = &pattern_strings; |
e15f48c2 | 258 | break; |
7dfcf010 BV |
259 | default: |
260 | return SR_ERR_ARG; | |
6239c175 UH |
261 | } |
262 | ||
dfb0fa1a | 263 | return SR_OK; |
6239c175 UH |
264 | } |
265 | ||
6f4b1868 BV |
266 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
267 | const void *value) | |
6239c175 UH |
268 | { |
269 | int ret; | |
1b79df2f | 270 | const char *stropt; |
6239c175 | 271 | |
6f4b1868 | 272 | (void)sdi; |
6239c175 | 273 | |
014359e3 | 274 | if (hwcap == SR_HWCAP_SAMPLERATE) { |
1b79df2f | 275 | cur_samplerate = *(const uint64_t *)value; |
92bcedf6 | 276 | sr_dbg("%s: setting samplerate to %" PRIu64, __func__, |
6f422264 | 277 | cur_samplerate); |
e46b8fb1 | 278 | ret = SR_OK; |
ffedd0bf | 279 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { |
8489264f | 280 | limit_msec = 0; |
1b79df2f | 281 | limit_samples = *(const uint64_t *)value; |
92bcedf6 | 282 | sr_dbg("%s: setting limit_samples to %" PRIu64, __func__, |
6f422264 | 283 | limit_samples); |
e46b8fb1 | 284 | ret = SR_OK; |
ffedd0bf | 285 | } else if (hwcap == SR_HWCAP_LIMIT_MSEC) { |
1b79df2f | 286 | limit_msec = *(const uint64_t *)value; |
8489264f | 287 | limit_samples = 0; |
92bcedf6 | 288 | sr_dbg("%s: setting limit_msec to %" PRIu64, __func__, |
6f422264 | 289 | limit_msec); |
e46b8fb1 | 290 | ret = SR_OK; |
ffedd0bf | 291 | } else if (hwcap == SR_HWCAP_PATTERN_MODE) { |
e15f48c2 | 292 | stropt = value; |
c03ed397 UH |
293 | ret = SR_OK; |
294 | if (!strcmp(stropt, "sigrok")) { | |
295 | default_pattern = PATTERN_SIGROK; | |
296 | } else if (!strcmp(stropt, "random")) { | |
c8f4624d | 297 | default_pattern = PATTERN_RANDOM; |
e15f48c2 | 298 | } else if (!strcmp(stropt, "incremental")) { |
c8f4624d | 299 | default_pattern = PATTERN_INC; |
c03ed397 UH |
300 | } else if (!strcmp(stropt, "all-low")) { |
301 | default_pattern = PATTERN_ALL_LOW; | |
302 | } else if (!strcmp(stropt, "all-high")) { | |
303 | default_pattern = PATTERN_ALL_HIGH; | |
e15f48c2 | 304 | } else { |
e46b8fb1 | 305 | ret = SR_ERR; |
e15f48c2 | 306 | } |
92bcedf6 | 307 | sr_dbg("%s: setting pattern to %d", __func__, default_pattern); |
6239c175 | 308 | } else { |
e46b8fb1 | 309 | ret = SR_ERR; |
6239c175 UH |
310 | } |
311 | ||
312 | return ret; | |
313 | } | |
314 | ||
3b203673 AG |
315 | static void samples_generator(uint8_t *buf, uint64_t size, |
316 | struct dev_context *devc) | |
85b5af06 | 317 | { |
cddd1c5f | 318 | static uint64_t p = 0; |
cddd1c5f | 319 | uint64_t i; |
85b5af06 | 320 | |
c03ed397 | 321 | /* TODO: Needed? */ |
5096c6a6 | 322 | memset(buf, 0, size); |
85b5af06 | 323 | |
b4750a3a | 324 | switch (devc->sample_generator) { |
c03ed397 | 325 | case PATTERN_SIGROK: /* sigrok pattern */ |
917e0e71 | 326 | for (i = 0; i < size; i++) { |
c8f4624d | 327 | *(buf + i) = ~(pattern_sigrok[p] >> 1); |
917e0e71 BV |
328 | if (++p == 64) |
329 | p = 0; | |
330 | } | |
331 | break; | |
c8f4624d | 332 | case PATTERN_RANDOM: /* Random */ |
5096c6a6 UH |
333 | for (i = 0; i < size; i++) |
334 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 | 335 | break; |
c8f4624d | 336 | case PATTERN_INC: /* Simple increment */ |
5096c6a6 | 337 | for (i = 0; i < size; i++) |
85b5af06 UH |
338 | *(buf + i) = i; |
339 | break; | |
c03ed397 | 340 | case PATTERN_ALL_LOW: /* All probes are low */ |
5a9660dd | 341 | memset(buf, 0x00, size); |
c03ed397 UH |
342 | break; |
343 | case PATTERN_ALL_HIGH: /* All probes are high */ | |
5a9660dd | 344 | memset(buf, 0xff, size); |
c03ed397 UH |
345 | break; |
346 | default: | |
92bcedf6 | 347 | sr_err("Unknown pattern: %d.", devc->sample_generator); |
c03ed397 | 348 | break; |
85b5af06 UH |
349 | } |
350 | } | |
351 | ||
85b5af06 | 352 | /* Callback handling data */ |
1f9813eb | 353 | static int receive_data(int fd, int revents, void *cb_data) |
85b5af06 | 354 | { |
b4750a3a | 355 | struct dev_context *devc = cb_data; |
b9c735a2 | 356 | struct sr_datafeed_packet packet; |
9c939c51 | 357 | struct sr_datafeed_logic logic; |
3b203673 AG |
358 | uint8_t buf[BUFSIZE]; |
359 | static uint64_t samples_to_send, expected_samplenum, sending_now; | |
360 | int64_t time, elapsed; | |
1924f59f | 361 | |
cb93f8a9 UH |
362 | (void)fd; |
363 | (void)revents; | |
1924f59f | 364 | |
3b203673 AG |
365 | /* How many "virtual" samples should we have collected by now? */ |
366 | time = g_get_monotonic_time(); | |
367 | elapsed = time - devc->starttime; | |
368 | expected_samplenum = elapsed * cur_samplerate / 1000000; | |
369 | /* Of those, how many do we still have to send? */ | |
370 | samples_to_send = expected_samplenum - devc->samples_counter; | |
371 | ||
372 | if (limit_samples) { | |
373 | samples_to_send = MIN(samples_to_send, | |
374 | limit_samples - devc->samples_counter); | |
375 | } | |
85b5af06 | 376 | |
3b203673 AG |
377 | while (samples_to_send > 0) { |
378 | sending_now = MIN(samples_to_send, sizeof(buf)); | |
379 | samples_to_send -= sending_now; | |
380 | samples_generator(buf, sending_now, devc); | |
381 | ||
382 | packet.type = SR_DF_LOGIC; | |
383 | packet.payload = &logic; | |
384 | logic.length = sending_now; | |
385 | logic.unitsize = 1; | |
386 | logic.data = buf; | |
387 | sr_session_send(devc->session_dev_id, &packet); | |
388 | devc->samples_counter += sending_now; | |
389 | } | |
390 | ||
391 | ||
392 | if (devc->samples_counter >= limit_samples) { | |
393 | sr_spew("We sent a total of %" PRIu64 " samples.", | |
394 | devc->samples_counter); | |
c03ed397 | 395 | /* Make sure we don't receive more packets. */ |
c216d623 AG |
396 | hw_dev_acquisition_stop(NULL, cb_data); |
397 | return TRUE; | |
85b5af06 | 398 | } |
1924f59f | 399 | |
85b5af06 UH |
400 | return TRUE; |
401 | } | |
402 | ||
3ffb6964 BV |
403 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
404 | void *cb_data) | |
6239c175 | 405 | { |
b9c735a2 UH |
406 | struct sr_datafeed_packet *packet; |
407 | struct sr_datafeed_header *header; | |
f366e86c | 408 | struct sr_datafeed_meta_logic meta; |
b4750a3a | 409 | struct dev_context *devc; |
6239c175 | 410 | |
3ffb6964 BV |
411 | (void)sdi; |
412 | ||
49145a63 AG |
413 | sr_dbg("Starting acquisition."); |
414 | ||
b4750a3a BV |
415 | /* TODO: 'devc' is never g_free()'d? */ |
416 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
92bcedf6 | 417 | sr_err("%s: devc malloc failed", __func__); |
e46b8fb1 | 418 | return SR_ERR_MALLOC; |
27a3a6fe | 419 | } |
85b5af06 | 420 | |
b4750a3a BV |
421 | devc->sample_generator = default_pattern; |
422 | devc->session_dev_id = cb_data; | |
423 | devc->samples_counter = 0; | |
85b5af06 | 424 | |
3b203673 AG |
425 | /* |
426 | * Setting two channels connected by a pipe is a remnant from when the | |
427 | * demo driver generated data in a thread, and collected and sent the | |
428 | * data in the main program loop. | |
429 | * They are kept here because it provides a convenient way of setting | |
430 | * up a timeout-based polling mechanism. | |
431 | */ | |
b4750a3a | 432 | if (pipe(devc->pipe_fds)) { |
c03ed397 | 433 | /* TODO: Better error message. */ |
92bcedf6 | 434 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 435 | return SR_ERR; |
c03ed397 | 436 | } |
85b5af06 | 437 | |
b4750a3a BV |
438 | devc->channels[0] = g_io_channel_unix_new(devc->pipe_fds[0]); |
439 | devc->channels[1] = g_io_channel_unix_new(devc->pipe_fds[1]); | |
d35aaf02 | 440 | |
b4750a3a | 441 | g_io_channel_set_flags(devc->channels[0], G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 442 | |
d35aaf02 | 443 | /* Set channel encoding to binary (default is UTF-8). */ |
b4750a3a BV |
444 | g_io_channel_set_encoding(devc->channels[0], NULL, NULL); |
445 | g_io_channel_set_encoding(devc->channels[1], NULL, NULL); | |
d35aaf02 UH |
446 | |
447 | /* Make channels to unbuffered. */ | |
b4750a3a BV |
448 | g_io_channel_set_buffered(devc->channels[0], FALSE); |
449 | g_io_channel_set_buffered(devc->channels[1], FALSE); | |
d35aaf02 | 450 | |
b4750a3a BV |
451 | sr_session_source_add_channel(devc->channels[0], G_IO_IN | G_IO_ERR, |
452 | 40, receive_data, devc); | |
85b5af06 | 453 | |
27a3a6fe | 454 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
92bcedf6 | 455 | sr_err("%s: packet malloc failed", __func__); |
e46b8fb1 | 456 | return SR_ERR_MALLOC; |
27a3a6fe UH |
457 | } |
458 | ||
459 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
92bcedf6 | 460 | sr_err("%s: header malloc failed", __func__); |
27a3a6fe UH |
461 | return SR_ERR_MALLOC; |
462 | } | |
6239c175 | 463 | |
5a2326a7 | 464 | packet->type = SR_DF_HEADER; |
9c939c51 | 465 | packet->payload = header; |
6239c175 UH |
466 | header->feed_version = 1; |
467 | gettimeofday(&header->starttime, NULL); | |
b4750a3a | 468 | sr_session_send(devc->session_dev_id, packet); |
f366e86c BV |
469 | |
470 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
471 | packet->type = SR_DF_META_LOGIC; | |
472 | packet->payload = &meta; | |
473 | meta.samplerate = cur_samplerate; | |
474 | meta.num_probes = NUM_PROBES; | |
b4750a3a | 475 | sr_session_send(devc->session_dev_id, packet); |
f366e86c | 476 | |
3b203673 AG |
477 | /* We use this timestamp to decide how many more samples to send. */ |
478 | devc->starttime = g_get_monotonic_time(); | |
479 | ||
27a3a6fe UH |
480 | g_free(header); |
481 | g_free(packet); | |
6239c175 | 482 | |
e46b8fb1 | 483 | return SR_OK; |
6239c175 UH |
484 | } |
485 | ||
69b07d14 | 486 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 487 | { |
7fd3e859 | 488 | struct dev_context *devc; |
c216d623 | 489 | struct sr_datafeed_packet packet; |
7fd3e859 | 490 | |
c216d623 | 491 | (void)sdi; |
6239c175 | 492 | |
c216d623 | 493 | devc = cb_data; |
7fd3e859 | 494 | |
49145a63 AG |
495 | sr_dbg("Stopping aquisition."); |
496 | ||
7fd3e859 | 497 | sr_session_source_remove_channel(devc->channels[0]); |
c216d623 AG |
498 | g_io_channel_shutdown(devc->channels[0], FALSE, NULL); |
499 | ||
500 | /* Send last packet. */ | |
501 | packet.type = SR_DF_END; | |
502 | sr_session_send(devc->session_dev_id, &packet); | |
7fd3e859 | 503 | |
3010f21c | 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, | |
61136ea6 | 513 | .scan = hw_scan, |
811deee4 | 514 | .dev_list = hw_dev_list, |
eebb6067 | 515 | .dev_clear = clear_instances, |
e7eb703f UH |
516 | .dev_open = hw_dev_open, |
517 | .dev_close = hw_dev_close, | |
dfb0fa1a | 518 | .info_get = hw_info_get, |
a9a245b4 | 519 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
520 | .dev_acquisition_start = hw_dev_acquisition_start, |
521 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
b4750a3a | 522 | .priv = NULL, |
6239c175 | 523 | }; |