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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 | |
92bcedf6 UH |
33 | /* Message logging helpers with driver-specific prefix string. */ |
34 | #define DRIVER_LOG_DOMAIN "demo: " | |
35 | #define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) | |
36 | #define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) | |
37 | #define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) | |
38 | #define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) | |
39 | #define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) | |
40 | #define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) | |
41 | ||
c03ed397 | 42 | /* TODO: Number of probes should be configurable. */ |
e15f48c2 | 43 | #define NUM_PROBES 8 |
c03ed397 | 44 | |
e15f48c2 | 45 | #define DEMONAME "Demo device" |
c03ed397 UH |
46 | |
47 | /* The size of chunks to send through the session bus. */ | |
48 | /* TODO: Should be configurable. */ | |
e15f48c2 | 49 | #define BUFSIZE 4096 |
85b5af06 | 50 | |
0d31276b | 51 | /* Supported patterns which we can generate */ |
e15f48c2 | 52 | enum { |
0d31276b UH |
53 | /** |
54 | * Pattern which spells "sigrok" using '0's (with '1's as "background") | |
55 | * when displayed using the 'bits' output format. | |
56 | */ | |
c8f4624d | 57 | PATTERN_SIGROK, |
0d31276b | 58 | |
c03ed397 | 59 | /** Pattern which consists of (pseudo-)random values on all probes. */ |
c8f4624d | 60 | PATTERN_RANDOM, |
0d31276b UH |
61 | |
62 | /** | |
63 | * Pattern which consists of incrementing numbers. | |
64 | * TODO: Better description. | |
65 | */ | |
c8f4624d | 66 | PATTERN_INC, |
c03ed397 UH |
67 | |
68 | /** Pattern where all probes have a low logic state. */ | |
69 | PATTERN_ALL_LOW, | |
70 | ||
71 | /** Pattern where all probes have a high logic state. */ | |
72 | PATTERN_ALL_HIGH, | |
e15f48c2 | 73 | }; |
85b5af06 | 74 | |
b4750a3a BV |
75 | /* Private, per-device-instance driver context. */ |
76 | struct dev_context { | |
e15f48c2 | 77 | int pipe_fds[2]; |
249ae2be | 78 | GIOChannel *channels[2]; |
e15f48c2 BV |
79 | uint8_t sample_generator; |
80 | uint8_t thread_running; | |
81 | uint64_t samples_counter; | |
3cd3a20b | 82 | void *session_dev_id; |
b9cc3629 | 83 | GTimer *timer; |
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; |
b9cc3629 BV |
146 | static GThread *my_thread; |
147 | static int thread_running; | |
6239c175 | 148 | |
69b07d14 | 149 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 150 | |
40dda2c3 | 151 | static int hw_init(void) |
61136ea6 | 152 | { |
b4750a3a | 153 | struct drv_context *drvc; |
61136ea6 | 154 | |
b4750a3a | 155 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { |
92bcedf6 | 156 | sr_err("Driver context malloc failed."); |
886a52b6 | 157 | return SR_ERR_MALLOC; |
b4750a3a BV |
158 | } |
159 | ddi->priv = drvc; | |
61136ea6 BV |
160 | |
161 | return SR_OK; | |
162 | } | |
163 | ||
067d0716 | 164 | static GSList *hw_scan(GSList *options) |
6239c175 | 165 | { |
d68e2d1a | 166 | struct sr_dev_inst *sdi; |
87ca93c5 | 167 | struct sr_probe *probe; |
b4750a3a | 168 | struct drv_context *drvc; |
067d0716 | 169 | GSList *devices; |
87ca93c5 | 170 | int i; |
067d0716 BV |
171 | |
172 | (void)options; | |
b4750a3a | 173 | drvc = ddi->priv; |
067d0716 | 174 | devices = NULL; |
85b5af06 | 175 | |
d3683c42 | 176 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL); |
c03ed397 | 177 | if (!sdi) { |
92bcedf6 | 178 | sr_err("%s: sr_dev_inst_new failed", __func__); |
85b5af06 | 179 | return 0; |
c03ed397 | 180 | } |
7dfcf010 | 181 | sdi->driver = ddi; |
e15f48c2 | 182 | |
87ca93c5 BV |
183 | for (i = 0; probe_names[i]; i++) { |
184 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
185 | probe_names[i]))) | |
186 | return NULL; | |
187 | sdi->probes = g_slist_append(sdi->probes, probe); | |
188 | } | |
189 | ||
067d0716 | 190 | devices = g_slist_append(devices, sdi); |
b4750a3a | 191 | drvc->instances = g_slist_append(drvc->instances, sdi); |
85b5af06 | 192 | |
067d0716 | 193 | return devices; |
6239c175 UH |
194 | } |
195 | ||
811deee4 BV |
196 | static GSList *hw_dev_list(void) |
197 | { | |
198 | struct drv_context *drvc; | |
199 | ||
200 | drvc = ddi->priv; | |
201 | ||
202 | return drvc->instances; | |
203 | } | |
204 | ||
25a0f108 | 205 | static int hw_dev_open(struct sr_dev_inst *sdi) |
6239c175 | 206 | { |
17e1afcb | 207 | /* Avoid compiler warnings. */ |
25a0f108 | 208 | (void)sdi; |
6239c175 UH |
209 | |
210 | /* Nothing needed so far. */ | |
697785d1 | 211 | |
e46b8fb1 | 212 | return SR_OK; |
6239c175 UH |
213 | } |
214 | ||
25a0f108 | 215 | static int hw_dev_close(struct sr_dev_inst *sdi) |
6239c175 | 216 | { |
17e1afcb | 217 | /* Avoid compiler warnings. */ |
25a0f108 | 218 | (void)sdi; |
6239c175 UH |
219 | |
220 | /* Nothing needed so far. */ | |
697785d1 UH |
221 | |
222 | return SR_OK; | |
6239c175 UH |
223 | } |
224 | ||
57ab7d9f | 225 | static int hw_cleanup(void) |
6239c175 UH |
226 | { |
227 | /* Nothing needed so far. */ | |
57ab7d9f | 228 | return SR_OK; |
6239c175 UH |
229 | } |
230 | ||
dfb0fa1a BV |
231 | static int hw_info_get(int info_id, const void **data, |
232 | const struct sr_dev_inst *sdi) | |
6239c175 | 233 | { |
85b5af06 | 234 | |
6f57fd96 BV |
235 | (void)sdi; |
236 | ||
dfb0fa1a | 237 | switch (info_id) { |
46c7a4da BV |
238 | case SR_DI_HWCAPS: |
239 | *data = hwcaps; | |
240 | break; | |
5a2326a7 | 241 | case SR_DI_NUM_PROBES: |
dfb0fa1a | 242 | *data = GINT_TO_POINTER(NUM_PROBES); |
6239c175 | 243 | break; |
464d12c7 | 244 | case SR_DI_PROBE_NAMES: |
dfb0fa1a | 245 | *data = probe_names; |
464d12c7 | 246 | break; |
4bfbf9fc | 247 | case SR_DI_SAMPLERATES: |
dfb0fa1a | 248 | *data = &samplerates; |
4bfbf9fc | 249 | break; |
5a2326a7 | 250 | case SR_DI_CUR_SAMPLERATE: |
dfb0fa1a | 251 | *data = &cur_samplerate; |
6239c175 | 252 | break; |
eb0a3731 | 253 | case SR_DI_PATTERNS: |
dfb0fa1a | 254 | *data = &pattern_strings; |
e15f48c2 | 255 | break; |
7dfcf010 BV |
256 | default: |
257 | return SR_ERR_ARG; | |
6239c175 UH |
258 | } |
259 | ||
dfb0fa1a | 260 | return SR_OK; |
6239c175 UH |
261 | } |
262 | ||
6f4b1868 BV |
263 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
264 | const void *value) | |
6239c175 UH |
265 | { |
266 | int ret; | |
1b79df2f | 267 | const char *stropt; |
6239c175 | 268 | |
6f4b1868 | 269 | (void)sdi; |
6239c175 | 270 | |
014359e3 | 271 | if (hwcap == SR_HWCAP_SAMPLERATE) { |
1b79df2f | 272 | cur_samplerate = *(const uint64_t *)value; |
92bcedf6 | 273 | sr_dbg("%s: setting samplerate to %" PRIu64, __func__, |
6f422264 | 274 | cur_samplerate); |
e46b8fb1 | 275 | ret = SR_OK; |
ffedd0bf | 276 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { |
8489264f | 277 | limit_msec = 0; |
1b79df2f | 278 | limit_samples = *(const uint64_t *)value; |
92bcedf6 | 279 | sr_dbg("%s: setting limit_samples to %" PRIu64, __func__, |
6f422264 | 280 | limit_samples); |
e46b8fb1 | 281 | ret = SR_OK; |
ffedd0bf | 282 | } else if (hwcap == SR_HWCAP_LIMIT_MSEC) { |
1b79df2f | 283 | limit_msec = *(const uint64_t *)value; |
8489264f | 284 | limit_samples = 0; |
92bcedf6 | 285 | sr_dbg("%s: setting limit_msec to %" PRIu64, __func__, |
6f422264 | 286 | limit_msec); |
e46b8fb1 | 287 | ret = SR_OK; |
ffedd0bf | 288 | } else if (hwcap == SR_HWCAP_PATTERN_MODE) { |
e15f48c2 | 289 | stropt = value; |
c03ed397 UH |
290 | ret = SR_OK; |
291 | if (!strcmp(stropt, "sigrok")) { | |
292 | default_pattern = PATTERN_SIGROK; | |
293 | } else if (!strcmp(stropt, "random")) { | |
c8f4624d | 294 | default_pattern = PATTERN_RANDOM; |
e15f48c2 | 295 | } else if (!strcmp(stropt, "incremental")) { |
c8f4624d | 296 | default_pattern = PATTERN_INC; |
c03ed397 UH |
297 | } else if (!strcmp(stropt, "all-low")) { |
298 | default_pattern = PATTERN_ALL_LOW; | |
299 | } else if (!strcmp(stropt, "all-high")) { | |
300 | default_pattern = PATTERN_ALL_HIGH; | |
e15f48c2 | 301 | } else { |
e46b8fb1 | 302 | ret = SR_ERR; |
e15f48c2 | 303 | } |
92bcedf6 | 304 | sr_dbg("%s: setting pattern to %d", __func__, default_pattern); |
6239c175 | 305 | } else { |
e46b8fb1 | 306 | ret = SR_ERR; |
6239c175 UH |
307 | } |
308 | ||
309 | return ret; | |
310 | } | |
311 | ||
5096c6a6 | 312 | static void samples_generator(uint8_t *buf, uint64_t size, void *data) |
85b5af06 | 313 | { |
cddd1c5f | 314 | static uint64_t p = 0; |
b4750a3a | 315 | struct dev_context *devc = data; |
cddd1c5f | 316 | uint64_t i; |
85b5af06 | 317 | |
c03ed397 | 318 | /* TODO: Needed? */ |
5096c6a6 | 319 | memset(buf, 0, size); |
85b5af06 | 320 | |
b4750a3a | 321 | switch (devc->sample_generator) { |
c03ed397 | 322 | case PATTERN_SIGROK: /* sigrok pattern */ |
917e0e71 | 323 | for (i = 0; i < size; i++) { |
c8f4624d | 324 | *(buf + i) = ~(pattern_sigrok[p] >> 1); |
917e0e71 BV |
325 | if (++p == 64) |
326 | p = 0; | |
327 | } | |
328 | break; | |
c8f4624d | 329 | case PATTERN_RANDOM: /* Random */ |
5096c6a6 UH |
330 | for (i = 0; i < size; i++) |
331 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 | 332 | break; |
c8f4624d | 333 | case PATTERN_INC: /* Simple increment */ |
5096c6a6 | 334 | for (i = 0; i < size; i++) |
85b5af06 UH |
335 | *(buf + i) = i; |
336 | break; | |
c03ed397 | 337 | case PATTERN_ALL_LOW: /* All probes are low */ |
5a9660dd | 338 | memset(buf, 0x00, size); |
c03ed397 UH |
339 | break; |
340 | case PATTERN_ALL_HIGH: /* All probes are high */ | |
5a9660dd | 341 | memset(buf, 0xff, size); |
c03ed397 UH |
342 | break; |
343 | default: | |
92bcedf6 | 344 | sr_err("Unknown pattern: %d.", devc->sample_generator); |
c03ed397 | 345 | break; |
85b5af06 UH |
346 | } |
347 | } | |
348 | ||
349 | /* Thread function */ | |
350 | static void thread_func(void *data) | |
351 | { | |
b4750a3a | 352 | struct dev_context *devc = data; |
85b5af06 UH |
353 | uint8_t buf[BUFSIZE]; |
354 | uint64_t nb_to_send = 0; | |
d35aaf02 | 355 | int bytes_written; |
1924f59f HE |
356 | double time_cur, time_last, time_diff; |
357 | ||
b4750a3a | 358 | time_last = g_timer_elapsed(devc->timer, NULL); |
85b5af06 UH |
359 | |
360 | while (thread_running) { | |
1924f59f | 361 | /* Rate control */ |
b4750a3a | 362 | time_cur = g_timer_elapsed(devc->timer, NULL); |
1924f59f HE |
363 | |
364 | time_diff = time_cur - time_last; | |
365 | time_last = time_cur; | |
366 | ||
367 | nb_to_send = cur_samplerate * time_diff; | |
368 | ||
c03ed397 | 369 | if (limit_samples) { |
1924f59f | 370 | nb_to_send = MIN(nb_to_send, |
b4750a3a | 371 | limit_samples - devc->samples_counter); |
c03ed397 | 372 | } |
1924f59f HE |
373 | |
374 | /* Make sure we don't overflow. */ | |
375 | nb_to_send = MIN(nb_to_send, BUFSIZE); | |
376 | ||
377 | if (nb_to_send) { | |
378 | samples_generator(buf, nb_to_send, data); | |
b4750a3a | 379 | devc->samples_counter += nb_to_send; |
070befcd | 380 | |
b4750a3a | 381 | g_io_channel_write_chars(devc->channels[1], (gchar *)&buf, |
c03ed397 | 382 | nb_to_send, (gsize *)&bytes_written, NULL); |
b9cc3629 BV |
383 | } |
384 | ||
1924f59f HE |
385 | /* Check if we're done. */ |
386 | if ((limit_msec && time_cur * 1000 > limit_msec) || | |
b4750a3a | 387 | (limit_samples && devc->samples_counter >= limit_samples)) |
1924f59f | 388 | { |
b4750a3a | 389 | close(devc->pipe_fds[1]); |
85b5af06 | 390 | thread_running = 0; |
85b5af06 UH |
391 | } |
392 | ||
1924f59f | 393 | g_usleep(10); |
85b5af06 UH |
394 | } |
395 | } | |
396 | ||
397 | /* Callback handling data */ | |
1f9813eb | 398 | static int receive_data(int fd, int revents, void *cb_data) |
85b5af06 | 399 | { |
b4750a3a | 400 | struct dev_context *devc = cb_data; |
b9c735a2 | 401 | struct sr_datafeed_packet packet; |
9c939c51 BV |
402 | struct sr_datafeed_logic logic; |
403 | static uint64_t samples_received = 0; | |
404 | unsigned char c[BUFSIZE]; | |
108a5bfb | 405 | gsize z; |
1924f59f | 406 | |
26ce0bbf | 407 | /* Avoid compiler warnings. */ |
cb93f8a9 UH |
408 | (void)fd; |
409 | (void)revents; | |
1924f59f HE |
410 | |
411 | do { | |
b4750a3a | 412 | g_io_channel_read_chars(devc->channels[0], |
070befcd | 413 | (gchar *)&c, BUFSIZE, &z, NULL); |
1924f59f HE |
414 | |
415 | if (z > 0) { | |
5a2326a7 | 416 | packet.type = SR_DF_LOGIC; |
9c939c51 | 417 | packet.payload = &logic; |
9c939c51 BV |
418 | logic.length = z; |
419 | logic.unitsize = 1; | |
420 | logic.data = c; | |
b4750a3a | 421 | sr_session_send(devc->session_dev_id, &packet); |
9c939c51 | 422 | samples_received += z; |
1924f59f HE |
423 | } |
424 | } while (z > 0); | |
85b5af06 | 425 | |
c03ed397 UH |
426 | if (!thread_running && z <= 0) { |
427 | /* Make sure we don't receive more packets. */ | |
b4750a3a | 428 | g_io_channel_shutdown(devc->channels[0], FALSE, NULL); |
d35aaf02 | 429 | |
1924f59f | 430 | /* Send last packet. */ |
5a2326a7 | 431 | packet.type = SR_DF_END; |
b4750a3a | 432 | sr_session_send(devc->session_dev_id, &packet); |
1924f59f HE |
433 | |
434 | return FALSE; | |
85b5af06 | 435 | } |
1924f59f | 436 | |
85b5af06 UH |
437 | return TRUE; |
438 | } | |
439 | ||
3ffb6964 BV |
440 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
441 | void *cb_data) | |
6239c175 | 442 | { |
b9c735a2 UH |
443 | struct sr_datafeed_packet *packet; |
444 | struct sr_datafeed_header *header; | |
f366e86c | 445 | struct sr_datafeed_meta_logic meta; |
b4750a3a | 446 | struct dev_context *devc; |
6239c175 | 447 | |
3ffb6964 BV |
448 | (void)sdi; |
449 | ||
b4750a3a BV |
450 | /* TODO: 'devc' is never g_free()'d? */ |
451 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
92bcedf6 | 452 | sr_err("%s: devc malloc failed", __func__); |
e46b8fb1 | 453 | return SR_ERR_MALLOC; |
27a3a6fe | 454 | } |
85b5af06 | 455 | |
b4750a3a BV |
456 | devc->sample_generator = default_pattern; |
457 | devc->session_dev_id = cb_data; | |
458 | devc->samples_counter = 0; | |
85b5af06 | 459 | |
b4750a3a | 460 | if (pipe(devc->pipe_fds)) { |
c03ed397 | 461 | /* TODO: Better error message. */ |
92bcedf6 | 462 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 463 | return SR_ERR; |
c03ed397 | 464 | } |
85b5af06 | 465 | |
b4750a3a BV |
466 | devc->channels[0] = g_io_channel_unix_new(devc->pipe_fds[0]); |
467 | devc->channels[1] = g_io_channel_unix_new(devc->pipe_fds[1]); | |
d35aaf02 | 468 | |
b4750a3a | 469 | g_io_channel_set_flags(devc->channels[0], G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 470 | |
d35aaf02 | 471 | /* Set channel encoding to binary (default is UTF-8). */ |
b4750a3a BV |
472 | g_io_channel_set_encoding(devc->channels[0], NULL, NULL); |
473 | g_io_channel_set_encoding(devc->channels[1], NULL, NULL); | |
d35aaf02 UH |
474 | |
475 | /* Make channels to unbuffered. */ | |
b4750a3a BV |
476 | g_io_channel_set_buffered(devc->channels[0], FALSE); |
477 | g_io_channel_set_buffered(devc->channels[1], FALSE); | |
d35aaf02 | 478 | |
b4750a3a BV |
479 | sr_session_source_add_channel(devc->channels[0], G_IO_IN | G_IO_ERR, |
480 | 40, receive_data, devc); | |
85b5af06 UH |
481 | |
482 | /* Run the demo thread. */ | |
b4750a3a | 483 | devc->timer = g_timer_new(); |
85b5af06 | 484 | thread_running = 1; |
4ca378df BV |
485 | my_thread = g_thread_try_new("sigrok demo generator", |
486 | (GThreadFunc)thread_func, devc, NULL); | |
c03ed397 | 487 | if (!my_thread) { |
92bcedf6 | 488 | sr_err("%s: g_thread_try_new failed", __func__); |
c03ed397 UH |
489 | return SR_ERR; /* TODO */ |
490 | } | |
6239c175 | 491 | |
27a3a6fe | 492 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
92bcedf6 | 493 | sr_err("%s: packet malloc failed", __func__); |
e46b8fb1 | 494 | return SR_ERR_MALLOC; |
27a3a6fe UH |
495 | } |
496 | ||
497 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
92bcedf6 | 498 | sr_err("%s: header malloc failed", __func__); |
27a3a6fe UH |
499 | return SR_ERR_MALLOC; |
500 | } | |
6239c175 | 501 | |
5a2326a7 | 502 | packet->type = SR_DF_HEADER; |
9c939c51 | 503 | packet->payload = header; |
6239c175 UH |
504 | header->feed_version = 1; |
505 | gettimeofday(&header->starttime, NULL); | |
b4750a3a | 506 | sr_session_send(devc->session_dev_id, packet); |
f366e86c BV |
507 | |
508 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
509 | packet->type = SR_DF_META_LOGIC; | |
510 | packet->payload = &meta; | |
511 | meta.samplerate = cur_samplerate; | |
512 | meta.num_probes = NUM_PROBES; | |
b4750a3a | 513 | sr_session_send(devc->session_dev_id, packet); |
f366e86c | 514 | |
27a3a6fe UH |
515 | g_free(header); |
516 | g_free(packet); | |
6239c175 | 517 | |
e46b8fb1 | 518 | return SR_OK; |
6239c175 UH |
519 | } |
520 | ||
69b07d14 | 521 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 522 | { |
7fd3e859 BV |
523 | struct dev_context *devc; |
524 | ||
17e1afcb | 525 | /* Avoid compiler warnings. */ |
3cd3a20b | 526 | (void)cb_data; |
6239c175 | 527 | |
7fd3e859 BV |
528 | devc = sdi->priv; |
529 | ||
1924f59f HE |
530 | /* Stop generate thread. */ |
531 | thread_running = 0; | |
3010f21c | 532 | |
7fd3e859 BV |
533 | sr_session_source_remove_channel(devc->channels[0]); |
534 | ||
3010f21c | 535 | return SR_OK; |
6239c175 UH |
536 | } |
537 | ||
c09f0b57 | 538 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
539 | .name = "demo", |
540 | .longname = "Demo driver and pattern generator", | |
541 | .api_version = 1, | |
542 | .init = hw_init, | |
543 | .cleanup = hw_cleanup, | |
61136ea6 | 544 | .scan = hw_scan, |
811deee4 | 545 | .dev_list = hw_dev_list, |
e7eb703f UH |
546 | .dev_open = hw_dev_open, |
547 | .dev_close = hw_dev_close, | |
dfb0fa1a | 548 | .info_get = hw_info_get, |
a9a245b4 | 549 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
550 | .dev_acquisition_start = hw_dev_acquisition_start, |
551 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
b4750a3a | 552 | .priv = NULL, |
6239c175 | 553 | }; |