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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 BV |
80 | uint8_t sample_generator; |
81 | uint8_t thread_running; | |
82 | uint64_t samples_counter; | |
3cd3a20b | 83 | void *session_dev_id; |
b9cc3629 | 84 | GTimer *timer; |
e15f48c2 | 85 | }; |
85b5af06 | 86 | |
915f7cc8 | 87 | static const int hwcaps[] = { |
5a2326a7 | 88 | SR_HWCAP_LOGIC_ANALYZER, |
bb7ef793 | 89 | SR_HWCAP_DEMO_DEV, |
4bfbf9fc | 90 | SR_HWCAP_SAMPLERATE, |
5a2326a7 UH |
91 | SR_HWCAP_PATTERN_MODE, |
92 | SR_HWCAP_LIMIT_SAMPLES, | |
93 | SR_HWCAP_LIMIT_MSEC, | |
94 | SR_HWCAP_CONTINUOUS, | |
6239c175 UH |
95 | }; |
96 | ||
a533743d | 97 | static const struct sr_samplerates samplerates = { |
c9140419 | 98 | SR_HZ(1), |
59df0c77 | 99 | SR_GHZ(1), |
c9140419 | 100 | SR_HZ(1), |
4bfbf9fc BV |
101 | NULL, |
102 | }; | |
103 | ||
c8f4624d | 104 | static const char *pattern_strings[] = { |
c03ed397 | 105 | "sigrok", |
e15f48c2 BV |
106 | "random", |
107 | "incremental", | |
c03ed397 UH |
108 | "all-low", |
109 | "all-high", | |
02440dd8 | 110 | NULL, |
85b5af06 UH |
111 | }; |
112 | ||
d261dbbf | 113 | /* We name the probes 0-7 on our demo driver. */ |
464d12c7 KS |
114 | static const char *probe_names[NUM_PROBES + 1] = { |
115 | "0", | |
116 | "1", | |
117 | "2", | |
118 | "3", | |
119 | "4", | |
120 | "5", | |
121 | "6", | |
122 | "7", | |
123 | NULL, | |
124 | }; | |
125 | ||
c8f4624d | 126 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
127 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
128 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
129 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
130 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
131 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
132 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
133 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
134 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
135 | }; | |
136 | ||
ea9cfed7 UH |
137 | /* Private, per-device-instance driver context. */ |
138 | /* TODO: struct context as with the other drivers. */ | |
139 | ||
e7eb703f | 140 | /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */ |
dcf03d6d BV |
141 | SR_PRIV struct sr_dev_driver demo_driver_info; |
142 | static struct sr_dev_driver *ddi = &demo_driver_info; | |
59df0c77 | 143 | static uint64_t cur_samplerate = SR_KHZ(200); |
b9cc3629 BV |
144 | static uint64_t limit_samples = 0; |
145 | static uint64_t limit_msec = 0; | |
c8f4624d | 146 | static int default_pattern = PATTERN_SIGROK; |
b9cc3629 BV |
147 | static GThread *my_thread; |
148 | static int thread_running; | |
6239c175 | 149 | |
69b07d14 | 150 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 151 | |
40dda2c3 | 152 | static int hw_init(void) |
61136ea6 | 153 | { |
b4750a3a | 154 | struct drv_context *drvc; |
61136ea6 | 155 | |
b4750a3a | 156 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { |
92bcedf6 | 157 | sr_err("Driver context malloc failed."); |
886a52b6 | 158 | return SR_ERR_MALLOC; |
b4750a3a BV |
159 | } |
160 | ddi->priv = drvc; | |
61136ea6 BV |
161 | |
162 | return SR_OK; | |
163 | } | |
164 | ||
067d0716 | 165 | static GSList *hw_scan(GSList *options) |
6239c175 | 166 | { |
d68e2d1a | 167 | struct sr_dev_inst *sdi; |
87ca93c5 | 168 | struct sr_probe *probe; |
b4750a3a | 169 | struct drv_context *drvc; |
067d0716 | 170 | GSList *devices; |
87ca93c5 | 171 | int i; |
067d0716 BV |
172 | |
173 | (void)options; | |
64d33dc2 | 174 | |
b4750a3a | 175 | drvc = ddi->priv; |
067d0716 | 176 | devices = NULL; |
85b5af06 | 177 | |
d3683c42 | 178 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL); |
c03ed397 | 179 | if (!sdi) { |
92bcedf6 | 180 | sr_err("%s: sr_dev_inst_new failed", __func__); |
85b5af06 | 181 | return 0; |
c03ed397 | 182 | } |
7dfcf010 | 183 | sdi->driver = ddi; |
e15f48c2 | 184 | |
87ca93c5 | 185 | for (i = 0; probe_names[i]; i++) { |
de6e0eca | 186 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, |
87ca93c5 BV |
187 | probe_names[i]))) |
188 | return NULL; | |
189 | sdi->probes = g_slist_append(sdi->probes, probe); | |
190 | } | |
191 | ||
067d0716 | 192 | devices = g_slist_append(devices, sdi); |
b4750a3a | 193 | drvc->instances = g_slist_append(drvc->instances, sdi); |
85b5af06 | 194 | |
067d0716 | 195 | return devices; |
6239c175 UH |
196 | } |
197 | ||
811deee4 BV |
198 | static GSList *hw_dev_list(void) |
199 | { | |
200 | struct drv_context *drvc; | |
201 | ||
202 | drvc = ddi->priv; | |
203 | ||
204 | return drvc->instances; | |
205 | } | |
206 | ||
25a0f108 | 207 | static int hw_dev_open(struct sr_dev_inst *sdi) |
6239c175 | 208 | { |
25a0f108 | 209 | (void)sdi; |
6239c175 UH |
210 | |
211 | /* Nothing needed so far. */ | |
697785d1 | 212 | |
e46b8fb1 | 213 | return SR_OK; |
6239c175 UH |
214 | } |
215 | ||
25a0f108 | 216 | static int hw_dev_close(struct sr_dev_inst *sdi) |
6239c175 | 217 | { |
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 | { |
6f57fd96 BV |
234 | (void)sdi; |
235 | ||
dfb0fa1a | 236 | switch (info_id) { |
46c7a4da BV |
237 | case SR_DI_HWCAPS: |
238 | *data = hwcaps; | |
239 | break; | |
5a2326a7 | 240 | case SR_DI_NUM_PROBES: |
dfb0fa1a | 241 | *data = GINT_TO_POINTER(NUM_PROBES); |
6239c175 | 242 | break; |
464d12c7 | 243 | case SR_DI_PROBE_NAMES: |
dfb0fa1a | 244 | *data = probe_names; |
464d12c7 | 245 | break; |
4bfbf9fc | 246 | case SR_DI_SAMPLERATES: |
dfb0fa1a | 247 | *data = &samplerates; |
4bfbf9fc | 248 | break; |
5a2326a7 | 249 | case SR_DI_CUR_SAMPLERATE: |
dfb0fa1a | 250 | *data = &cur_samplerate; |
6239c175 | 251 | break; |
eb0a3731 | 252 | case SR_DI_PATTERNS: |
dfb0fa1a | 253 | *data = &pattern_strings; |
e15f48c2 | 254 | break; |
7dfcf010 BV |
255 | default: |
256 | return SR_ERR_ARG; | |
6239c175 UH |
257 | } |
258 | ||
dfb0fa1a | 259 | return SR_OK; |
6239c175 UH |
260 | } |
261 | ||
6f4b1868 BV |
262 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
263 | const void *value) | |
6239c175 UH |
264 | { |
265 | int ret; | |
1b79df2f | 266 | const char *stropt; |
6239c175 | 267 | |
6f4b1868 | 268 | (void)sdi; |
6239c175 | 269 | |
014359e3 | 270 | if (hwcap == SR_HWCAP_SAMPLERATE) { |
1b79df2f | 271 | cur_samplerate = *(const uint64_t *)value; |
92bcedf6 | 272 | sr_dbg("%s: setting samplerate to %" PRIu64, __func__, |
6f422264 | 273 | cur_samplerate); |
e46b8fb1 | 274 | ret = SR_OK; |
ffedd0bf | 275 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { |
8489264f | 276 | limit_msec = 0; |
1b79df2f | 277 | limit_samples = *(const uint64_t *)value; |
92bcedf6 | 278 | sr_dbg("%s: setting limit_samples to %" PRIu64, __func__, |
6f422264 | 279 | limit_samples); |
e46b8fb1 | 280 | ret = SR_OK; |
ffedd0bf | 281 | } else if (hwcap == SR_HWCAP_LIMIT_MSEC) { |
1b79df2f | 282 | limit_msec = *(const uint64_t *)value; |
8489264f | 283 | limit_samples = 0; |
92bcedf6 | 284 | sr_dbg("%s: setting limit_msec to %" PRIu64, __func__, |
6f422264 | 285 | limit_msec); |
e46b8fb1 | 286 | ret = SR_OK; |
ffedd0bf | 287 | } else if (hwcap == SR_HWCAP_PATTERN_MODE) { |
e15f48c2 | 288 | stropt = value; |
c03ed397 UH |
289 | ret = SR_OK; |
290 | if (!strcmp(stropt, "sigrok")) { | |
291 | default_pattern = PATTERN_SIGROK; | |
292 | } else if (!strcmp(stropt, "random")) { | |
c8f4624d | 293 | default_pattern = PATTERN_RANDOM; |
e15f48c2 | 294 | } else if (!strcmp(stropt, "incremental")) { |
c8f4624d | 295 | default_pattern = PATTERN_INC; |
c03ed397 UH |
296 | } else if (!strcmp(stropt, "all-low")) { |
297 | default_pattern = PATTERN_ALL_LOW; | |
298 | } else if (!strcmp(stropt, "all-high")) { | |
299 | default_pattern = PATTERN_ALL_HIGH; | |
e15f48c2 | 300 | } else { |
e46b8fb1 | 301 | ret = SR_ERR; |
e15f48c2 | 302 | } |
92bcedf6 | 303 | sr_dbg("%s: setting pattern to %d", __func__, default_pattern); |
6239c175 | 304 | } else { |
e46b8fb1 | 305 | ret = SR_ERR; |
6239c175 UH |
306 | } |
307 | ||
308 | return ret; | |
309 | } | |
310 | ||
5096c6a6 | 311 | static void samples_generator(uint8_t *buf, uint64_t size, void *data) |
85b5af06 | 312 | { |
cddd1c5f | 313 | static uint64_t p = 0; |
b4750a3a | 314 | struct dev_context *devc = data; |
cddd1c5f | 315 | uint64_t i; |
85b5af06 | 316 | |
c03ed397 | 317 | /* TODO: Needed? */ |
5096c6a6 | 318 | memset(buf, 0, size); |
85b5af06 | 319 | |
b4750a3a | 320 | switch (devc->sample_generator) { |
c03ed397 | 321 | case PATTERN_SIGROK: /* sigrok pattern */ |
917e0e71 | 322 | for (i = 0; i < size; i++) { |
c8f4624d | 323 | *(buf + i) = ~(pattern_sigrok[p] >> 1); |
917e0e71 BV |
324 | if (++p == 64) |
325 | p = 0; | |
326 | } | |
327 | break; | |
c8f4624d | 328 | case PATTERN_RANDOM: /* Random */ |
5096c6a6 UH |
329 | for (i = 0; i < size; i++) |
330 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 | 331 | break; |
c8f4624d | 332 | case PATTERN_INC: /* Simple increment */ |
5096c6a6 | 333 | for (i = 0; i < size; i++) |
85b5af06 UH |
334 | *(buf + i) = i; |
335 | break; | |
c03ed397 | 336 | case PATTERN_ALL_LOW: /* All probes are low */ |
5a9660dd | 337 | memset(buf, 0x00, size); |
c03ed397 UH |
338 | break; |
339 | case PATTERN_ALL_HIGH: /* All probes are high */ | |
5a9660dd | 340 | memset(buf, 0xff, size); |
c03ed397 UH |
341 | break; |
342 | default: | |
92bcedf6 | 343 | sr_err("Unknown pattern: %d.", devc->sample_generator); |
c03ed397 | 344 | break; |
85b5af06 UH |
345 | } |
346 | } | |
347 | ||
348 | /* Thread function */ | |
349 | static void thread_func(void *data) | |
350 | { | |
b4750a3a | 351 | struct dev_context *devc = data; |
85b5af06 UH |
352 | uint8_t buf[BUFSIZE]; |
353 | uint64_t nb_to_send = 0; | |
d35aaf02 | 354 | int bytes_written; |
1924f59f HE |
355 | double time_cur, time_last, time_diff; |
356 | ||
b4750a3a | 357 | time_last = g_timer_elapsed(devc->timer, NULL); |
85b5af06 UH |
358 | |
359 | while (thread_running) { | |
1924f59f | 360 | /* Rate control */ |
b4750a3a | 361 | time_cur = g_timer_elapsed(devc->timer, NULL); |
1924f59f HE |
362 | |
363 | time_diff = time_cur - time_last; | |
364 | time_last = time_cur; | |
365 | ||
366 | nb_to_send = cur_samplerate * time_diff; | |
367 | ||
c03ed397 | 368 | if (limit_samples) { |
1924f59f | 369 | nb_to_send = MIN(nb_to_send, |
b4750a3a | 370 | limit_samples - devc->samples_counter); |
c03ed397 | 371 | } |
1924f59f HE |
372 | |
373 | /* Make sure we don't overflow. */ | |
374 | nb_to_send = MIN(nb_to_send, BUFSIZE); | |
375 | ||
376 | if (nb_to_send) { | |
377 | samples_generator(buf, nb_to_send, data); | |
b4750a3a | 378 | devc->samples_counter += nb_to_send; |
070befcd | 379 | |
b4750a3a | 380 | g_io_channel_write_chars(devc->channels[1], (gchar *)&buf, |
c03ed397 | 381 | nb_to_send, (gsize *)&bytes_written, NULL); |
b9cc3629 BV |
382 | } |
383 | ||
1924f59f HE |
384 | /* Check if we're done. */ |
385 | if ((limit_msec && time_cur * 1000 > limit_msec) || | |
b4750a3a | 386 | (limit_samples && devc->samples_counter >= limit_samples)) |
1924f59f | 387 | { |
b4750a3a | 388 | close(devc->pipe_fds[1]); |
85b5af06 | 389 | thread_running = 0; |
85b5af06 UH |
390 | } |
391 | ||
1924f59f | 392 | g_usleep(10); |
85b5af06 UH |
393 | } |
394 | } | |
395 | ||
396 | /* Callback handling data */ | |
1f9813eb | 397 | static int receive_data(int fd, int revents, void *cb_data) |
85b5af06 | 398 | { |
b4750a3a | 399 | struct dev_context *devc = cb_data; |
b9c735a2 | 400 | struct sr_datafeed_packet packet; |
9c939c51 BV |
401 | struct sr_datafeed_logic logic; |
402 | static uint64_t samples_received = 0; | |
403 | unsigned char c[BUFSIZE]; | |
108a5bfb | 404 | gsize z; |
1924f59f | 405 | |
cb93f8a9 UH |
406 | (void)fd; |
407 | (void)revents; | |
1924f59f HE |
408 | |
409 | do { | |
b4750a3a | 410 | g_io_channel_read_chars(devc->channels[0], |
070befcd | 411 | (gchar *)&c, BUFSIZE, &z, NULL); |
1924f59f HE |
412 | |
413 | if (z > 0) { | |
5a2326a7 | 414 | packet.type = SR_DF_LOGIC; |
9c939c51 | 415 | packet.payload = &logic; |
9c939c51 BV |
416 | logic.length = z; |
417 | logic.unitsize = 1; | |
418 | logic.data = c; | |
b4750a3a | 419 | sr_session_send(devc->session_dev_id, &packet); |
9c939c51 | 420 | samples_received += z; |
1924f59f HE |
421 | } |
422 | } while (z > 0); | |
85b5af06 | 423 | |
c03ed397 UH |
424 | if (!thread_running && z <= 0) { |
425 | /* Make sure we don't receive more packets. */ | |
c216d623 AG |
426 | hw_dev_acquisition_stop(NULL, cb_data); |
427 | return TRUE; | |
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 | ||
49145a63 AG |
443 | sr_dbg("Starting acquisition."); |
444 | ||
b4750a3a BV |
445 | /* TODO: 'devc' is never g_free()'d? */ |
446 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
92bcedf6 | 447 | sr_err("%s: devc malloc failed", __func__); |
e46b8fb1 | 448 | return SR_ERR_MALLOC; |
27a3a6fe | 449 | } |
85b5af06 | 450 | |
b4750a3a BV |
451 | devc->sample_generator = default_pattern; |
452 | devc->session_dev_id = cb_data; | |
453 | devc->samples_counter = 0; | |
85b5af06 | 454 | |
b4750a3a | 455 | if (pipe(devc->pipe_fds)) { |
c03ed397 | 456 | /* TODO: Better error message. */ |
92bcedf6 | 457 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 458 | return SR_ERR; |
c03ed397 | 459 | } |
85b5af06 | 460 | |
b4750a3a BV |
461 | devc->channels[0] = g_io_channel_unix_new(devc->pipe_fds[0]); |
462 | devc->channels[1] = g_io_channel_unix_new(devc->pipe_fds[1]); | |
d35aaf02 | 463 | |
b4750a3a | 464 | g_io_channel_set_flags(devc->channels[0], G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 465 | |
d35aaf02 | 466 | /* Set channel encoding to binary (default is UTF-8). */ |
b4750a3a BV |
467 | g_io_channel_set_encoding(devc->channels[0], NULL, NULL); |
468 | g_io_channel_set_encoding(devc->channels[1], NULL, NULL); | |
d35aaf02 UH |
469 | |
470 | /* Make channels to unbuffered. */ | |
b4750a3a BV |
471 | g_io_channel_set_buffered(devc->channels[0], FALSE); |
472 | g_io_channel_set_buffered(devc->channels[1], FALSE); | |
d35aaf02 | 473 | |
b4750a3a BV |
474 | sr_session_source_add_channel(devc->channels[0], G_IO_IN | G_IO_ERR, |
475 | 40, receive_data, devc); | |
85b5af06 UH |
476 | |
477 | /* Run the demo thread. */ | |
b4750a3a | 478 | devc->timer = g_timer_new(); |
85b5af06 | 479 | thread_running = 1; |
4ca378df BV |
480 | my_thread = g_thread_try_new("sigrok demo generator", |
481 | (GThreadFunc)thread_func, devc, NULL); | |
c03ed397 | 482 | if (!my_thread) { |
92bcedf6 | 483 | sr_err("%s: g_thread_try_new failed", __func__); |
c03ed397 UH |
484 | return SR_ERR; /* TODO */ |
485 | } | |
6239c175 | 486 | |
27a3a6fe | 487 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
92bcedf6 | 488 | sr_err("%s: packet malloc failed", __func__); |
e46b8fb1 | 489 | return SR_ERR_MALLOC; |
27a3a6fe UH |
490 | } |
491 | ||
492 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
92bcedf6 | 493 | sr_err("%s: header malloc failed", __func__); |
27a3a6fe UH |
494 | return SR_ERR_MALLOC; |
495 | } | |
6239c175 | 496 | |
5a2326a7 | 497 | packet->type = SR_DF_HEADER; |
9c939c51 | 498 | packet->payload = header; |
6239c175 UH |
499 | header->feed_version = 1; |
500 | gettimeofday(&header->starttime, NULL); | |
b4750a3a | 501 | sr_session_send(devc->session_dev_id, packet); |
f366e86c BV |
502 | |
503 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
504 | packet->type = SR_DF_META_LOGIC; | |
505 | packet->payload = &meta; | |
506 | meta.samplerate = cur_samplerate; | |
507 | meta.num_probes = NUM_PROBES; | |
b4750a3a | 508 | sr_session_send(devc->session_dev_id, packet); |
f366e86c | 509 | |
27a3a6fe UH |
510 | g_free(header); |
511 | g_free(packet); | |
6239c175 | 512 | |
e46b8fb1 | 513 | return SR_OK; |
6239c175 UH |
514 | } |
515 | ||
69b07d14 | 516 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 517 | { |
7fd3e859 | 518 | struct dev_context *devc; |
c216d623 | 519 | struct sr_datafeed_packet packet; |
7fd3e859 | 520 | |
c216d623 | 521 | (void)sdi; |
6239c175 | 522 | |
c216d623 | 523 | devc = cb_data; |
7fd3e859 | 524 | |
49145a63 AG |
525 | sr_dbg("Stopping aquisition."); |
526 | ||
1924f59f HE |
527 | /* Stop generate thread. */ |
528 | thread_running = 0; | |
3010f21c | 529 | |
7fd3e859 | 530 | sr_session_source_remove_channel(devc->channels[0]); |
c216d623 AG |
531 | g_io_channel_shutdown(devc->channels[0], FALSE, NULL); |
532 | ||
533 | /* Send last packet. */ | |
534 | packet.type = SR_DF_END; | |
535 | sr_session_send(devc->session_dev_id, &packet); | |
7fd3e859 | 536 | |
3010f21c | 537 | return SR_OK; |
6239c175 UH |
538 | } |
539 | ||
c09f0b57 | 540 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
541 | .name = "demo", |
542 | .longname = "Demo driver and pattern generator", | |
543 | .api_version = 1, | |
544 | .init = hw_init, | |
545 | .cleanup = hw_cleanup, | |
61136ea6 | 546 | .scan = hw_scan, |
811deee4 | 547 | .dev_list = hw_dev_list, |
e7eb703f UH |
548 | .dev_open = hw_dev_open, |
549 | .dev_close = hw_dev_close, | |
dfb0fa1a | 550 | .info_get = hw_info_get, |
a9a245b4 | 551 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
552 | .dev_acquisition_start = hw_dev_acquisition_start, |
553 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
b4750a3a | 554 | .priv = NULL, |
6239c175 | 555 | }; |