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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 | |
2474d87e BV |
52 | #define STR_PATTERN_SIGROK "sigrok" |
53 | #define STR_PATTERN_RANDOM "random" | |
54 | #define STR_PATTERN_INC "incremental" | |
55 | #define STR_PATTERN_ALL_LOW "all-low" | |
56 | #define STR_PATTERN_ALL_HIGH "all-high" | |
57 | ||
0d31276b | 58 | /* Supported patterns which we can generate */ |
e15f48c2 | 59 | enum { |
0d31276b UH |
60 | /** |
61 | * Pattern which spells "sigrok" using '0's (with '1's as "background") | |
62 | * when displayed using the 'bits' output format. | |
63 | */ | |
c8f4624d | 64 | PATTERN_SIGROK, |
0d31276b | 65 | |
c03ed397 | 66 | /** Pattern which consists of (pseudo-)random values on all probes. */ |
c8f4624d | 67 | PATTERN_RANDOM, |
0d31276b UH |
68 | |
69 | /** | |
70 | * Pattern which consists of incrementing numbers. | |
71 | * TODO: Better description. | |
72 | */ | |
c8f4624d | 73 | PATTERN_INC, |
c03ed397 UH |
74 | |
75 | /** Pattern where all probes have a low logic state. */ | |
76 | PATTERN_ALL_LOW, | |
77 | ||
78 | /** Pattern where all probes have a high logic state. */ | |
79 | PATTERN_ALL_HIGH, | |
e15f48c2 | 80 | }; |
85b5af06 | 81 | |
b4750a3a BV |
82 | /* Private, per-device-instance driver context. */ |
83 | struct dev_context { | |
e15f48c2 | 84 | int pipe_fds[2]; |
249ae2be | 85 | GIOChannel *channels[2]; |
e15f48c2 | 86 | uint8_t sample_generator; |
e15f48c2 | 87 | uint64_t samples_counter; |
3e9b7f9c | 88 | void *cb_data; |
3b203673 | 89 | int64_t starttime; |
e15f48c2 | 90 | }; |
85b5af06 | 91 | |
915f7cc8 | 92 | static const int hwcaps[] = { |
1953564a BV |
93 | SR_CONF_LOGIC_ANALYZER, |
94 | SR_CONF_DEMO_DEV, | |
95 | SR_CONF_SAMPLERATE, | |
96 | SR_CONF_PATTERN_MODE, | |
97 | SR_CONF_LIMIT_SAMPLES, | |
98 | SR_CONF_LIMIT_MSEC, | |
99 | SR_CONF_CONTINUOUS, | |
6239c175 UH |
100 | }; |
101 | ||
d00088ca BV |
102 | static const uint64_t samplerates[] = { |
103 | SR_HZ(1), | |
104 | SR_GHZ(1), | |
105 | SR_HZ(1), | |
4bfbf9fc BV |
106 | }; |
107 | ||
c8f4624d | 108 | static const char *pattern_strings[] = { |
c03ed397 | 109 | "sigrok", |
e15f48c2 BV |
110 | "random", |
111 | "incremental", | |
c03ed397 UH |
112 | "all-low", |
113 | "all-high", | |
85b5af06 UH |
114 | }; |
115 | ||
d261dbbf | 116 | /* We name the probes 0-7 on our demo driver. */ |
464d12c7 | 117 | static const char *probe_names[NUM_PROBES + 1] = { |
78693401 | 118 | "0", "1", "2", "3", "4", "5", "6", "7", |
464d12c7 KS |
119 | NULL, |
120 | }; | |
121 | ||
c8f4624d | 122 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
123 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
124 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
125 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
126 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
127 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
128 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
129 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
130 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
131 | }; | |
132 | ||
ea9cfed7 UH |
133 | /* Private, per-device-instance driver context. */ |
134 | /* TODO: struct context as with the other drivers. */ | |
135 | ||
e7eb703f | 136 | /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */ |
dcf03d6d | 137 | SR_PRIV struct sr_dev_driver demo_driver_info; |
a873c594 | 138 | static struct sr_dev_driver *di = &demo_driver_info; |
59df0c77 | 139 | static uint64_t cur_samplerate = SR_KHZ(200); |
b9cc3629 BV |
140 | static uint64_t limit_samples = 0; |
141 | static uint64_t limit_msec = 0; | |
c8f4624d | 142 | static int default_pattern = PATTERN_SIGROK; |
6239c175 | 143 | |
69b07d14 | 144 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 145 | |
eebb6067 UH |
146 | static int clear_instances(void) |
147 | { | |
148 | /* Nothing needed so far. */ | |
149 | ||
150 | return SR_OK; | |
151 | } | |
152 | ||
34f06b90 | 153 | static int hw_init(struct sr_context *sr_ctx) |
61136ea6 | 154 | { |
063e7aef | 155 | return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); |
61136ea6 BV |
156 | } |
157 | ||
067d0716 | 158 | static GSList *hw_scan(GSList *options) |
6239c175 | 159 | { |
d68e2d1a | 160 | struct sr_dev_inst *sdi; |
87ca93c5 | 161 | struct sr_probe *probe; |
b4750a3a | 162 | struct drv_context *drvc; |
067d0716 | 163 | GSList *devices; |
87ca93c5 | 164 | int i; |
067d0716 BV |
165 | |
166 | (void)options; | |
64d33dc2 | 167 | |
a873c594 | 168 | drvc = di->priv; |
4b97c74e | 169 | |
067d0716 | 170 | devices = NULL; |
85b5af06 | 171 | |
d3683c42 | 172 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL); |
c03ed397 | 173 | if (!sdi) { |
92bcedf6 | 174 | sr_err("%s: sr_dev_inst_new failed", __func__); |
85b5af06 | 175 | return 0; |
c03ed397 | 176 | } |
a873c594 | 177 | sdi->driver = di; |
e15f48c2 | 178 | |
87ca93c5 | 179 | for (i = 0; probe_names[i]; i++) { |
de6e0eca | 180 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, |
87ca93c5 BV |
181 | probe_names[i]))) |
182 | return NULL; | |
183 | sdi->probes = g_slist_append(sdi->probes, probe); | |
184 | } | |
185 | ||
067d0716 | 186 | devices = g_slist_append(devices, sdi); |
b4750a3a | 187 | drvc->instances = g_slist_append(drvc->instances, sdi); |
85b5af06 | 188 | |
067d0716 | 189 | return devices; |
6239c175 UH |
190 | } |
191 | ||
811deee4 BV |
192 | static GSList *hw_dev_list(void) |
193 | { | |
0e94d524 | 194 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
195 | } |
196 | ||
25a0f108 | 197 | static int hw_dev_open(struct sr_dev_inst *sdi) |
6239c175 | 198 | { |
25a0f108 | 199 | (void)sdi; |
6239c175 UH |
200 | |
201 | /* Nothing needed so far. */ | |
697785d1 | 202 | |
e46b8fb1 | 203 | return SR_OK; |
6239c175 UH |
204 | } |
205 | ||
25a0f108 | 206 | static int hw_dev_close(struct sr_dev_inst *sdi) |
6239c175 | 207 | { |
25a0f108 | 208 | (void)sdi; |
6239c175 UH |
209 | |
210 | /* Nothing needed so far. */ | |
697785d1 UH |
211 | |
212 | return SR_OK; | |
6239c175 UH |
213 | } |
214 | ||
57ab7d9f | 215 | static int hw_cleanup(void) |
6239c175 UH |
216 | { |
217 | /* Nothing needed so far. */ | |
57ab7d9f | 218 | return SR_OK; |
6239c175 UH |
219 | } |
220 | ||
d00088ca | 221 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi) |
6239c175 | 222 | { |
6f57fd96 BV |
223 | (void)sdi; |
224 | ||
035a1078 | 225 | switch (id) { |
123e1313 | 226 | case SR_CONF_SAMPLERATE: |
d00088ca | 227 | *data = g_variant_new_uint64(cur_samplerate); |
6239c175 | 228 | break; |
2474d87e | 229 | case SR_CONF_LIMIT_SAMPLES: |
d00088ca | 230 | *data = g_variant_new_uint64(limit_samples); |
2474d87e BV |
231 | break; |
232 | case SR_CONF_LIMIT_MSEC: | |
d00088ca | 233 | *data = g_variant_new_uint64(limit_msec); |
2474d87e BV |
234 | break; |
235 | case SR_CONF_PATTERN_MODE: | |
236 | switch (default_pattern) { | |
237 | case PATTERN_SIGROK: | |
d00088ca | 238 | *data = g_variant_new_string(STR_PATTERN_SIGROK); |
2474d87e BV |
239 | break; |
240 | case PATTERN_RANDOM: | |
d00088ca | 241 | *data = g_variant_new_string(STR_PATTERN_RANDOM); |
2474d87e BV |
242 | break; |
243 | case PATTERN_INC: | |
d00088ca | 244 | *data = g_variant_new_string(STR_PATTERN_INC); |
2474d87e BV |
245 | break; |
246 | case PATTERN_ALL_LOW: | |
d00088ca | 247 | *data = g_variant_new_string(STR_PATTERN_ALL_LOW); |
2474d87e BV |
248 | break; |
249 | case PATTERN_ALL_HIGH: | |
d00088ca | 250 | *data = g_variant_new_string(STR_PATTERN_ALL_HIGH); |
2474d87e BV |
251 | break; |
252 | } | |
253 | break; | |
7dfcf010 BV |
254 | default: |
255 | return SR_ERR_ARG; | |
6239c175 UH |
256 | } |
257 | ||
dfb0fa1a | 258 | return SR_OK; |
6239c175 UH |
259 | } |
260 | ||
d00088ca | 261 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) |
6239c175 UH |
262 | { |
263 | int ret; | |
1b79df2f | 264 | const char *stropt; |
6239c175 | 265 | |
6f4b1868 | 266 | (void)sdi; |
6239c175 | 267 | |
035a1078 | 268 | if (id == SR_CONF_SAMPLERATE) { |
d00088ca | 269 | cur_samplerate = g_variant_get_uint64(data); |
92bcedf6 | 270 | sr_dbg("%s: setting samplerate to %" PRIu64, __func__, |
6f422264 | 271 | cur_samplerate); |
e46b8fb1 | 272 | ret = SR_OK; |
035a1078 | 273 | } else if (id == SR_CONF_LIMIT_SAMPLES) { |
8489264f | 274 | limit_msec = 0; |
d00088ca | 275 | limit_samples = g_variant_get_uint64(data); |
92bcedf6 | 276 | sr_dbg("%s: setting limit_samples to %" PRIu64, __func__, |
6f422264 | 277 | limit_samples); |
e46b8fb1 | 278 | ret = SR_OK; |
035a1078 | 279 | } else if (id == SR_CONF_LIMIT_MSEC) { |
d00088ca | 280 | limit_msec = g_variant_get_uint64(data); |
8489264f | 281 | limit_samples = 0; |
92bcedf6 | 282 | sr_dbg("%s: setting limit_msec to %" PRIu64, __func__, |
6f422264 | 283 | limit_msec); |
e46b8fb1 | 284 | ret = SR_OK; |
035a1078 | 285 | } else if (id == SR_CONF_PATTERN_MODE) { |
d00088ca | 286 | stropt = g_variant_get_string(data, NULL); |
c03ed397 | 287 | ret = SR_OK; |
2474d87e | 288 | if (!strcmp(stropt, STR_PATTERN_SIGROK)) { |
c03ed397 | 289 | default_pattern = PATTERN_SIGROK; |
2474d87e | 290 | } else if (!strcmp(stropt, STR_PATTERN_RANDOM)) { |
c8f4624d | 291 | default_pattern = PATTERN_RANDOM; |
2474d87e | 292 | } else if (!strcmp(stropt, STR_PATTERN_INC)) { |
c8f4624d | 293 | default_pattern = PATTERN_INC; |
2474d87e | 294 | } else if (!strcmp(stropt, STR_PATTERN_ALL_LOW)) { |
c03ed397 | 295 | default_pattern = PATTERN_ALL_LOW; |
2474d87e | 296 | } else if (!strcmp(stropt, STR_PATTERN_ALL_HIGH)) { |
c03ed397 | 297 | default_pattern = PATTERN_ALL_HIGH; |
e15f48c2 | 298 | } else { |
e46b8fb1 | 299 | ret = SR_ERR; |
e15f48c2 | 300 | } |
92bcedf6 | 301 | sr_dbg("%s: setting pattern to %d", __func__, default_pattern); |
6239c175 | 302 | } else { |
e46b8fb1 | 303 | ret = SR_ERR; |
6239c175 UH |
304 | } |
305 | ||
306 | return ret; | |
307 | } | |
308 | ||
d00088ca | 309 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) |
a1c743fc | 310 | { |
d00088ca BV |
311 | GVariant *gvar; |
312 | GVariantBuilder gvb; | |
a1c743fc BV |
313 | |
314 | (void)sdi; | |
315 | ||
316 | switch (key) { | |
9a6517d1 | 317 | case SR_CONF_DEVICE_OPTIONS: |
d00088ca BV |
318 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
319 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
9a6517d1 | 320 | break; |
a1c743fc | 321 | case SR_CONF_SAMPLERATE: |
d00088ca BV |
322 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); |
323 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
324 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
325 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
326 | *data = g_variant_builder_end(&gvb); | |
a1c743fc | 327 | break; |
dd96ea98 | 328 | case SR_CONF_PATTERN_MODE: |
d00088ca | 329 | *data = g_variant_new_strv(pattern_strings, ARRAY_SIZE(pattern_strings)); |
dd96ea98 | 330 | break; |
a1c743fc BV |
331 | default: |
332 | return SR_ERR_ARG; | |
333 | } | |
334 | ||
335 | return SR_OK; | |
336 | } | |
337 | ||
3b203673 AG |
338 | static void samples_generator(uint8_t *buf, uint64_t size, |
339 | struct dev_context *devc) | |
85b5af06 | 340 | { |
cddd1c5f | 341 | static uint64_t p = 0; |
cddd1c5f | 342 | uint64_t i; |
85b5af06 | 343 | |
c03ed397 | 344 | /* TODO: Needed? */ |
5096c6a6 | 345 | memset(buf, 0, size); |
85b5af06 | 346 | |
b4750a3a | 347 | switch (devc->sample_generator) { |
c03ed397 | 348 | case PATTERN_SIGROK: /* sigrok pattern */ |
917e0e71 | 349 | for (i = 0; i < size; i++) { |
c8f4624d | 350 | *(buf + i) = ~(pattern_sigrok[p] >> 1); |
917e0e71 BV |
351 | if (++p == 64) |
352 | p = 0; | |
353 | } | |
354 | break; | |
c8f4624d | 355 | case PATTERN_RANDOM: /* Random */ |
5096c6a6 UH |
356 | for (i = 0; i < size; i++) |
357 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 | 358 | break; |
c8f4624d | 359 | case PATTERN_INC: /* Simple increment */ |
5096c6a6 | 360 | for (i = 0; i < size; i++) |
85b5af06 UH |
361 | *(buf + i) = i; |
362 | break; | |
c03ed397 | 363 | case PATTERN_ALL_LOW: /* All probes are low */ |
5a9660dd | 364 | memset(buf, 0x00, size); |
c03ed397 UH |
365 | break; |
366 | case PATTERN_ALL_HIGH: /* All probes are high */ | |
5a9660dd | 367 | memset(buf, 0xff, size); |
c03ed397 UH |
368 | break; |
369 | default: | |
92bcedf6 | 370 | sr_err("Unknown pattern: %d.", devc->sample_generator); |
c03ed397 | 371 | break; |
85b5af06 UH |
372 | } |
373 | } | |
374 | ||
85b5af06 | 375 | /* Callback handling data */ |
1f9813eb | 376 | static int receive_data(int fd, int revents, void *cb_data) |
85b5af06 | 377 | { |
b4750a3a | 378 | struct dev_context *devc = cb_data; |
b9c735a2 | 379 | struct sr_datafeed_packet packet; |
9c939c51 | 380 | struct sr_datafeed_logic logic; |
3b203673 AG |
381 | uint8_t buf[BUFSIZE]; |
382 | static uint64_t samples_to_send, expected_samplenum, sending_now; | |
383 | int64_t time, elapsed; | |
1924f59f | 384 | |
cb93f8a9 UH |
385 | (void)fd; |
386 | (void)revents; | |
1924f59f | 387 | |
3b203673 AG |
388 | /* How many "virtual" samples should we have collected by now? */ |
389 | time = g_get_monotonic_time(); | |
390 | elapsed = time - devc->starttime; | |
391 | expected_samplenum = elapsed * cur_samplerate / 1000000; | |
392 | /* Of those, how many do we still have to send? */ | |
393 | samples_to_send = expected_samplenum - devc->samples_counter; | |
394 | ||
395 | if (limit_samples) { | |
396 | samples_to_send = MIN(samples_to_send, | |
397 | limit_samples - devc->samples_counter); | |
398 | } | |
85b5af06 | 399 | |
3b203673 AG |
400 | while (samples_to_send > 0) { |
401 | sending_now = MIN(samples_to_send, sizeof(buf)); | |
402 | samples_to_send -= sending_now; | |
403 | samples_generator(buf, sending_now, devc); | |
404 | ||
405 | packet.type = SR_DF_LOGIC; | |
406 | packet.payload = &logic; | |
407 | logic.length = sending_now; | |
408 | logic.unitsize = 1; | |
409 | logic.data = buf; | |
3e9b7f9c | 410 | sr_session_send(devc->cb_data, &packet); |
3b203673 AG |
411 | devc->samples_counter += sending_now; |
412 | } | |
413 | ||
35e199da UH |
414 | if (limit_samples && devc->samples_counter >= limit_samples) { |
415 | sr_info("Requested number of samples reached."); | |
c216d623 AG |
416 | hw_dev_acquisition_stop(NULL, cb_data); |
417 | return TRUE; | |
85b5af06 | 418 | } |
1924f59f | 419 | |
85b5af06 UH |
420 | return TRUE; |
421 | } | |
422 | ||
3ffb6964 BV |
423 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
424 | void *cb_data) | |
6239c175 | 425 | { |
b4750a3a | 426 | struct dev_context *devc; |
6239c175 | 427 | |
3ffb6964 BV |
428 | (void)sdi; |
429 | ||
b4750a3a BV |
430 | /* TODO: 'devc' is never g_free()'d? */ |
431 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
92bcedf6 | 432 | sr_err("%s: devc malloc failed", __func__); |
e46b8fb1 | 433 | return SR_ERR_MALLOC; |
27a3a6fe | 434 | } |
85b5af06 | 435 | |
b4750a3a | 436 | devc->sample_generator = default_pattern; |
3e9b7f9c | 437 | devc->cb_data = cb_data; |
b4750a3a | 438 | devc->samples_counter = 0; |
85b5af06 | 439 | |
3b203673 AG |
440 | /* |
441 | * Setting two channels connected by a pipe is a remnant from when the | |
442 | * demo driver generated data in a thread, and collected and sent the | |
443 | * data in the main program loop. | |
444 | * They are kept here because it provides a convenient way of setting | |
445 | * up a timeout-based polling mechanism. | |
446 | */ | |
b4750a3a | 447 | if (pipe(devc->pipe_fds)) { |
c03ed397 | 448 | /* TODO: Better error message. */ |
92bcedf6 | 449 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 450 | return SR_ERR; |
c03ed397 | 451 | } |
85b5af06 | 452 | |
b4750a3a BV |
453 | devc->channels[0] = g_io_channel_unix_new(devc->pipe_fds[0]); |
454 | devc->channels[1] = g_io_channel_unix_new(devc->pipe_fds[1]); | |
d35aaf02 | 455 | |
b4750a3a | 456 | g_io_channel_set_flags(devc->channels[0], G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 457 | |
d35aaf02 | 458 | /* Set channel encoding to binary (default is UTF-8). */ |
b4750a3a BV |
459 | g_io_channel_set_encoding(devc->channels[0], NULL, NULL); |
460 | g_io_channel_set_encoding(devc->channels[1], NULL, NULL); | |
d35aaf02 UH |
461 | |
462 | /* Make channels to unbuffered. */ | |
b4750a3a BV |
463 | g_io_channel_set_buffered(devc->channels[0], FALSE); |
464 | g_io_channel_set_buffered(devc->channels[1], FALSE); | |
d35aaf02 | 465 | |
b4750a3a BV |
466 | sr_session_source_add_channel(devc->channels[0], G_IO_IN | G_IO_ERR, |
467 | 40, receive_data, devc); | |
85b5af06 | 468 | |
4afdfd46 UH |
469 | /* Send header packet to the session bus. */ |
470 | std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN); | |
f366e86c | 471 | |
3b203673 AG |
472 | /* We use this timestamp to decide how many more samples to send. */ |
473 | devc->starttime = g_get_monotonic_time(); | |
474 | ||
e46b8fb1 | 475 | return SR_OK; |
6239c175 UH |
476 | } |
477 | ||
69b07d14 | 478 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 479 | { |
7fd3e859 | 480 | struct dev_context *devc; |
c216d623 | 481 | struct sr_datafeed_packet packet; |
7fd3e859 | 482 | |
c216d623 | 483 | (void)sdi; |
6239c175 | 484 | |
c216d623 | 485 | devc = cb_data; |
7fd3e859 | 486 | |
49145a63 AG |
487 | sr_dbg("Stopping aquisition."); |
488 | ||
7fd3e859 | 489 | sr_session_source_remove_channel(devc->channels[0]); |
c216d623 AG |
490 | g_io_channel_shutdown(devc->channels[0], FALSE, NULL); |
491 | ||
492 | /* Send last packet. */ | |
493 | packet.type = SR_DF_END; | |
3e9b7f9c | 494 | sr_session_send(devc->cb_data, &packet); |
7fd3e859 | 495 | |
3010f21c | 496 | return SR_OK; |
6239c175 UH |
497 | } |
498 | ||
c09f0b57 | 499 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
500 | .name = "demo", |
501 | .longname = "Demo driver and pattern generator", | |
502 | .api_version = 1, | |
503 | .init = hw_init, | |
504 | .cleanup = hw_cleanup, | |
61136ea6 | 505 | .scan = hw_scan, |
811deee4 | 506 | .dev_list = hw_dev_list, |
eebb6067 | 507 | .dev_clear = clear_instances, |
035a1078 BV |
508 | .config_get = config_get, |
509 | .config_set = config_set, | |
a1c743fc | 510 | .config_list = config_list, |
e7eb703f UH |
511 | .dev_open = hw_dev_open, |
512 | .dev_close = hw_dev_close, | |
69040b7c UH |
513 | .dev_acquisition_start = hw_dev_acquisition_start, |
514 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
b4750a3a | 515 | .priv = NULL, |
6239c175 | 516 | }; |