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6239c175 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
6239c175 UH |
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 | |
3544f848 | 34 | #define LOG_PREFIX "demo" |
92bcedf6 | 35 | |
c07f60e7 BV |
36 | #define DEFAULT_NUM_LOGIC_PROBES 8 |
37 | #define DEFAULT_NUM_ANALOG_PROBES 4 | |
c03ed397 | 38 | |
8b2d41ed | 39 | /* The size in bytes of chunks to send through the session bus. */ |
61c39f54 | 40 | #define LOGIC_BUFSIZE 4096 |
8b2d41ed BV |
41 | /* Size of the analog pattern space per channel. */ |
42 | #define ANALOG_BUFSIZE 4096 | |
2474d87e | 43 | |
61c39f54 | 44 | /* Patterns we can generate */ |
e15f48c2 | 45 | enum { |
8b2d41ed | 46 | /* Logic */ |
0d31276b | 47 | /** |
61c39f54 BV |
48 | * Spells "sigrok" across 8 probes using '0's (with '1's as |
49 | * "background") when displayed using the 'bits' output format. | |
c07f60e7 BV |
50 | * The pattern is repeasted every 8 probes, shifted to the right |
51 | * in time by one bit. | |
0d31276b | 52 | */ |
c8f4624d | 53 | PATTERN_SIGROK, |
0d31276b | 54 | |
c07f60e7 | 55 | /** Pseudo-random values on all probes. */ |
c8f4624d | 56 | PATTERN_RANDOM, |
0d31276b UH |
57 | |
58 | /** | |
c07f60e7 BV |
59 | * Incrementing number across 8 probes. The pattern is repeasted |
60 | * every 8 probes, shifted to the right in time by one bit. | |
0d31276b | 61 | */ |
c8f4624d | 62 | PATTERN_INC, |
c03ed397 | 63 | |
61c39f54 | 64 | /** All probes have a low logic state. */ |
c03ed397 UH |
65 | PATTERN_ALL_LOW, |
66 | ||
61c39f54 | 67 | /** All probes have a high logic state. */ |
c03ed397 | 68 | PATTERN_ALL_HIGH, |
8b2d41ed BV |
69 | |
70 | /* Analog */ | |
71 | /** | |
72 | * Square wave. | |
73 | */ | |
74 | PATTERN_SQUARE, | |
e15f48c2 | 75 | }; |
85b5af06 | 76 | |
8b2d41ed | 77 | static const char *logic_pattern_str[] = { |
61c39f54 BV |
78 | "sigrok", |
79 | "random", | |
80 | "incremental", | |
81 | "all-low", | |
82 | "all-high", | |
83 | }; | |
84 | ||
8b2d41ed BV |
85 | static const char *analog_pattern_str[] = { |
86 | "square", | |
87 | }; | |
88 | ||
89 | struct analog_gen { | |
90 | int pattern; | |
91 | float pattern_data[ANALOG_BUFSIZE]; | |
92 | unsigned int num_samples; | |
93 | struct sr_datafeed_analog packet; | |
94 | }; | |
95 | ||
b4750a3a BV |
96 | /* Private, per-device-instance driver context. */ |
97 | struct dev_context { | |
e15f48c2 | 98 | int pipe_fds[2]; |
e0532047 | 99 | GIOChannel *channel; |
a7684294 JH |
100 | uint64_t cur_samplerate; |
101 | uint64_t limit_samples; | |
102 | uint64_t limit_msec; | |
e15f48c2 | 103 | uint64_t samples_counter; |
3b203673 | 104 | int64_t starttime; |
61c39f54 | 105 | uint64_t step; |
8b2d41ed | 106 | /* Logic */ |
c07f60e7 BV |
107 | int32_t num_logic_probes; |
108 | unsigned int logic_unitsize; | |
109 | uint8_t logic_pattern; | |
110 | unsigned char logic_data[LOGIC_BUFSIZE]; | |
8b2d41ed | 111 | /* Analog */ |
c07f60e7 | 112 | int32_t num_analog_probes; |
8b2d41ed | 113 | GSList *analog_probe_groups; |
c07f60e7 BV |
114 | }; |
115 | ||
116 | static const int32_t hwopts[] = { | |
117 | SR_CONF_NUM_LOGIC_PROBES, | |
118 | SR_CONF_NUM_ANALOG_PROBES, | |
e15f48c2 | 119 | }; |
85b5af06 | 120 | |
915f7cc8 | 121 | static const int hwcaps[] = { |
1953564a BV |
122 | SR_CONF_LOGIC_ANALYZER, |
123 | SR_CONF_DEMO_DEV, | |
124 | SR_CONF_SAMPLERATE, | |
125 | SR_CONF_PATTERN_MODE, | |
126 | SR_CONF_LIMIT_SAMPLES, | |
127 | SR_CONF_LIMIT_MSEC, | |
6239c175 UH |
128 | }; |
129 | ||
d00088ca BV |
130 | static const uint64_t samplerates[] = { |
131 | SR_HZ(1), | |
132 | SR_GHZ(1), | |
133 | SR_HZ(1), | |
4bfbf9fc BV |
134 | }; |
135 | ||
c8f4624d | 136 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
137 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
138 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
139 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
140 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
141 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
142 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
143 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
144 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
145 | }; | |
146 | ||
dcf03d6d | 147 | SR_PRIV struct sr_dev_driver demo_driver_info; |
a873c594 | 148 | static struct sr_dev_driver *di = &demo_driver_info; |
6239c175 | 149 | |
6078d2c9 | 150 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 151 | |
c07f60e7 | 152 | |
3b412e3a | 153 | static int dev_clear(void) |
eebb6067 | 154 | { |
1c2d542d | 155 | return std_dev_clear(di, NULL); |
eebb6067 UH |
156 | } |
157 | ||
6078d2c9 | 158 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 159 | { |
f6beaac5 | 160 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
161 | } |
162 | ||
8b2d41ed BV |
163 | static void set_analog_pattern(const struct sr_probe_group *probe_group, int pattern) |
164 | { | |
165 | struct analog_gen *ag; | |
166 | float value; | |
167 | unsigned int num_samples, i; | |
168 | int last_end; | |
169 | ||
170 | ag = probe_group->priv; | |
171 | ag->pattern = pattern; | |
172 | ||
173 | switch (pattern) { | |
174 | case PATTERN_SQUARE: | |
175 | num_samples = ANALOG_BUFSIZE / sizeof(float); | |
176 | value = 5.0; | |
177 | last_end = 0; | |
178 | for (i = 0; i < num_samples; i++) { | |
179 | if (i % 5 == 0) | |
180 | value = -value; | |
181 | if (i % 10 == 0) | |
182 | last_end = i - 1; | |
183 | ag->pattern_data[i] = value; | |
184 | } | |
185 | ag->num_samples = last_end; | |
186 | break; | |
187 | } | |
188 | } | |
189 | ||
6078d2c9 | 190 | static GSList *scan(GSList *options) |
6239c175 | 191 | { |
b4750a3a | 192 | struct drv_context *drvc; |
33ef7573 | 193 | struct dev_context *devc; |
c07f60e7 BV |
194 | struct sr_dev_inst *sdi; |
195 | struct sr_probe *probe; | |
8b2d41ed | 196 | struct sr_probe_group *pg; |
c07f60e7 | 197 | struct sr_config *src; |
8b2d41ed | 198 | struct analog_gen *ag; |
c07f60e7 BV |
199 | GSList *devices, *l; |
200 | int num_logic_probes, num_analog_probes, i; | |
61c39f54 | 201 | char probe_name[16]; |
067d0716 | 202 | |
a873c594 | 203 | drvc = di->priv; |
4b97c74e | 204 | |
c07f60e7 BV |
205 | num_logic_probes = DEFAULT_NUM_LOGIC_PROBES; |
206 | num_analog_probes = DEFAULT_NUM_ANALOG_PROBES; | |
207 | for (l = options; l; l = l->next) { | |
208 | src = l->data; | |
209 | switch (src->key) { | |
210 | case SR_CONF_NUM_LOGIC_PROBES: | |
211 | num_logic_probes = g_variant_get_int32(src->data); | |
212 | break; | |
213 | case SR_CONF_NUM_ANALOG_PROBES: | |
214 | num_analog_probes = g_variant_get_int32(src->data); | |
215 | break; | |
216 | } | |
217 | } | |
85b5af06 | 218 | |
c07f60e7 | 219 | devices = NULL; |
61c39f54 | 220 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Demo device", NULL, NULL); |
c03ed397 | 221 | if (!sdi) { |
e45ad6e2 UH |
222 | sr_err("Device instance creation failed."); |
223 | return NULL; | |
c03ed397 | 224 | } |
a873c594 | 225 | sdi->driver = di; |
e15f48c2 | 226 | |
8b2d41ed BV |
227 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { |
228 | sr_err("Device context malloc failed."); | |
229 | return NULL; | |
230 | } | |
231 | devc->cur_samplerate = SR_KHZ(200); | |
232 | devc->limit_samples = 0; | |
233 | devc->limit_msec = 0; | |
234 | devc->step = 0; | |
235 | devc->num_logic_probes = num_logic_probes; | |
236 | devc->logic_unitsize = (devc->num_logic_probes + 7) / 8; | |
237 | devc->logic_pattern = PATTERN_SIGROK; | |
238 | devc->num_analog_probes = num_analog_probes; | |
239 | devc->analog_probe_groups = NULL; | |
240 | ||
241 | /* Logic probes, all in one probe group. */ | |
242 | if (!(pg = g_try_malloc(sizeof(struct sr_probe_group)))) | |
243 | return NULL; | |
244 | pg->name = g_strdup("Logic"); | |
245 | pg->probes = NULL; | |
246 | pg->priv = NULL; | |
c07f60e7 | 247 | for (i = 0; i < num_logic_probes; i++) { |
61c39f54 BV |
248 | sprintf(probe_name, "D%d", i); |
249 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, probe_name))) | |
87ca93c5 BV |
250 | return NULL; |
251 | sdi->probes = g_slist_append(sdi->probes, probe); | |
8b2d41ed | 252 | pg->probes = g_slist_append(pg->probes, probe); |
87ca93c5 | 253 | } |
8b2d41ed | 254 | sdi->probe_groups = g_slist_append(NULL, pg); |
87ca93c5 | 255 | |
8b2d41ed | 256 | /* Analog probes, probe groups and pattern generators. */ |
c07f60e7 BV |
257 | for (i = 0; i < num_analog_probes; i++) { |
258 | sprintf(probe_name, "A%d", i); | |
259 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, probe_name))) | |
260 | return NULL; | |
261 | sdi->probes = g_slist_append(sdi->probes, probe); | |
c07f60e7 | 262 | |
8b2d41ed BV |
263 | /* Every analog probe gets its own probe group. */ |
264 | if (!(pg = g_try_malloc(sizeof(struct sr_probe_group)))) | |
265 | return NULL; | |
266 | pg->name = g_strdup(probe_name); | |
267 | pg->probes = g_slist_append(NULL, probe); | |
85b5af06 | 268 | |
8b2d41ed BV |
269 | /* Every probe group gets a generator struct. */ |
270 | if (!(ag = g_try_malloc(sizeof(struct analog_gen)))) | |
271 | return NULL; | |
272 | ag->packet.probes = pg->probes; | |
273 | ag->packet.mq = 0; | |
274 | ag->packet.mqflags = 0; | |
275 | ag->packet.unit = SR_UNIT_VOLT; | |
276 | ag->packet.data = ag->pattern_data; | |
277 | pg->priv = ag; | |
278 | set_analog_pattern(pg, PATTERN_SQUARE); | |
279 | ||
280 | sdi->probe_groups = g_slist_append(sdi->probe_groups, pg); | |
281 | devc->analog_probe_groups = g_slist_append(devc->analog_probe_groups, pg); | |
33ef7573 | 282 | } |
33ef7573 JH |
283 | |
284 | sdi->priv = devc; | |
8b2d41ed BV |
285 | devices = g_slist_append(devices, sdi); |
286 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
33ef7573 | 287 | |
067d0716 | 288 | return devices; |
6239c175 UH |
289 | } |
290 | ||
6078d2c9 | 291 | static GSList *dev_list(void) |
811deee4 | 292 | { |
0e94d524 | 293 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
294 | } |
295 | ||
6078d2c9 | 296 | static int dev_open(struct sr_dev_inst *sdi) |
6239c175 | 297 | { |
e73ffd42 | 298 | sdi->status = SR_ST_ACTIVE; |
697785d1 | 299 | |
e46b8fb1 | 300 | return SR_OK; |
6239c175 UH |
301 | } |
302 | ||
6078d2c9 | 303 | static int dev_close(struct sr_dev_inst *sdi) |
6239c175 | 304 | { |
decfe89d | 305 | sdi->status = SR_ST_INACTIVE; |
697785d1 UH |
306 | |
307 | return SR_OK; | |
6239c175 UH |
308 | } |
309 | ||
6078d2c9 | 310 | static int cleanup(void) |
6239c175 | 311 | { |
1c2d542d | 312 | return dev_clear(); |
6239c175 UH |
313 | } |
314 | ||
8f996b89 ML |
315 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
316 | const struct sr_probe_group *probe_group) | |
6239c175 | 317 | { |
c07f60e7 | 318 | struct dev_context *devc; |
6f57fd96 | 319 | |
8f996b89 ML |
320 | (void)probe_group; |
321 | ||
c07f60e7 | 322 | devc = sdi->priv; |
035a1078 | 323 | switch (id) { |
123e1313 | 324 | case SR_CONF_SAMPLERATE: |
a7684294 | 325 | *data = g_variant_new_uint64(devc->cur_samplerate); |
6239c175 | 326 | break; |
2474d87e | 327 | case SR_CONF_LIMIT_SAMPLES: |
a7684294 | 328 | *data = g_variant_new_uint64(devc->limit_samples); |
2474d87e BV |
329 | break; |
330 | case SR_CONF_LIMIT_MSEC: | |
a7684294 | 331 | *data = g_variant_new_uint64(devc->limit_msec); |
2474d87e BV |
332 | break; |
333 | case SR_CONF_PATTERN_MODE: | |
8b2d41ed | 334 | *data = g_variant_new_string(logic_pattern_str[devc->logic_pattern]); |
c07f60e7 BV |
335 | break; |
336 | case SR_CONF_NUM_LOGIC_PROBES: | |
337 | *data = g_variant_new_int32(devc->num_logic_probes); | |
338 | break; | |
339 | case SR_CONF_NUM_ANALOG_PROBES: | |
340 | *data = g_variant_new_int32(devc->num_analog_probes); | |
2474d87e | 341 | break; |
7dfcf010 | 342 | default: |
bd6fbf62 | 343 | return SR_ERR_NA; |
6239c175 UH |
344 | } |
345 | ||
dfb0fa1a | 346 | return SR_OK; |
6239c175 UH |
347 | } |
348 | ||
8f996b89 ML |
349 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
350 | const struct sr_probe_group *probe_group) | |
6239c175 | 351 | { |
8b2d41ed BV |
352 | struct dev_context *devc; |
353 | struct sr_probe_group *pg; | |
354 | GSList *l; | |
355 | int logic_pattern, analog_pattern, ret; | |
61c39f54 | 356 | unsigned int i; |
1b79df2f | 357 | const char *stropt; |
6239c175 | 358 | |
8b2d41ed | 359 | devc = sdi->priv; |
6239c175 | 360 | |
e73ffd42 BV |
361 | if (sdi->status != SR_ST_ACTIVE) |
362 | return SR_ERR_DEV_CLOSED; | |
363 | ||
8b2d41ed | 364 | ret = SR_ERR; |
035a1078 | 365 | if (id == SR_CONF_SAMPLERATE) { |
a7684294 | 366 | devc->cur_samplerate = g_variant_get_uint64(data); |
61c39f54 | 367 | sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); |
e46b8fb1 | 368 | ret = SR_OK; |
035a1078 | 369 | } else if (id == SR_CONF_LIMIT_SAMPLES) { |
a7684294 JH |
370 | devc->limit_msec = 0; |
371 | devc->limit_samples = g_variant_get_uint64(data); | |
8b2d41ed | 372 | sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); |
e46b8fb1 | 373 | ret = SR_OK; |
035a1078 | 374 | } else if (id == SR_CONF_LIMIT_MSEC) { |
8b2d41ed | 375 | /* TODO: convert to limit_samples */ |
a7684294 JH |
376 | devc->limit_msec = g_variant_get_uint64(data); |
377 | devc->limit_samples = 0; | |
8b2d41ed | 378 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); |
e46b8fb1 | 379 | ret = SR_OK; |
035a1078 | 380 | } else if (id == SR_CONF_PATTERN_MODE) { |
d00088ca | 381 | stropt = g_variant_get_string(data, NULL); |
8b2d41ed BV |
382 | logic_pattern = analog_pattern = -1; |
383 | /* Is it a logic pattern? */ | |
384 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { | |
385 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
386 | logic_pattern = i; | |
61c39f54 BV |
387 | break; |
388 | } | |
e15f48c2 | 389 | } |
8b2d41ed BV |
390 | if (logic_pattern == -1) { |
391 | /* Is it an analog pattern? */ | |
392 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { | |
393 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
394 | analog_pattern = i; | |
395 | break; | |
396 | } | |
397 | } | |
398 | } | |
399 | if (logic_pattern > -1) { | |
400 | devc->logic_pattern = logic_pattern; | |
401 | /* Might as well do this now. */ | |
402 | if (logic_pattern == PATTERN_ALL_LOW) | |
403 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); | |
404 | else if (logic_pattern == PATTERN_ALL_HIGH) | |
405 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); | |
406 | ret = SR_OK; | |
407 | sr_dbg("Setting logic pattern to %s", logic_pattern_str[logic_pattern]); | |
408 | } else if (analog_pattern > -1) { | |
409 | sr_dbg("Setting analog pattern to %s", analog_pattern_str[analog_pattern]); | |
410 | if (probe_group) | |
411 | set_analog_pattern(probe_group, analog_pattern); | |
412 | else { | |
413 | /* No probe group specified, apply pattern to all of them. */ | |
414 | for (l = sdi->probe_groups; l; l = l->next) { | |
415 | pg = l->data; | |
416 | set_analog_pattern(pg, analog_pattern); | |
417 | } | |
418 | ret = SR_OK; | |
419 | } | |
420 | } else { | |
421 | ret = SR_ERR; | |
422 | } | |
6239c175 | 423 | } else { |
bd6fbf62 | 424 | ret = SR_ERR_NA; |
6239c175 UH |
425 | } |
426 | ||
427 | return ret; | |
428 | } | |
429 | ||
8f996b89 ML |
430 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
431 | const struct sr_probe_group *probe_group) | |
a1c743fc | 432 | { |
d00088ca BV |
433 | GVariant *gvar; |
434 | GVariantBuilder gvb; | |
a1c743fc BV |
435 | |
436 | (void)sdi; | |
8f996b89 | 437 | (void)probe_group; |
a1c743fc BV |
438 | |
439 | switch (key) { | |
c07f60e7 BV |
440 | case SR_CONF_SCAN_OPTIONS: |
441 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
442 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
443 | break; | |
9a6517d1 | 444 | case SR_CONF_DEVICE_OPTIONS: |
d00088ca BV |
445 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
446 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
9a6517d1 | 447 | break; |
a1c743fc | 448 | case SR_CONF_SAMPLERATE: |
d00088ca BV |
449 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); |
450 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
451 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
452 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
453 | *data = g_variant_builder_end(&gvb); | |
a1c743fc | 454 | break; |
dd96ea98 | 455 | case SR_CONF_PATTERN_MODE: |
8b2d41ed | 456 | *data = g_variant_new_strv(logic_pattern_str, ARRAY_SIZE(logic_pattern_str)); |
dd96ea98 | 457 | break; |
a1c743fc | 458 | default: |
bd6fbf62 | 459 | return SR_ERR_NA; |
a1c743fc BV |
460 | } |
461 | ||
462 | return SR_OK; | |
463 | } | |
464 | ||
c07f60e7 | 465 | static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) |
85b5af06 | 466 | { |
61c39f54 | 467 | struct dev_context *devc; |
c07f60e7 BV |
468 | uint64_t i, j; |
469 | uint8_t pat; | |
85b5af06 | 470 | |
61c39f54 | 471 | devc = sdi->priv; |
85b5af06 | 472 | |
c07f60e7 | 473 | switch (devc->logic_pattern) { |
61c39f54 | 474 | case PATTERN_SIGROK: |
c07f60e7 BV |
475 | memset(devc->logic_data, 0x00, size); |
476 | for (i = 0; i < size; i += devc->logic_unitsize) { | |
477 | for (j = 0; j < devc->logic_unitsize; j++) { | |
478 | pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; | |
479 | devc->logic_data[i + j] = ~pat; | |
480 | } | |
481 | devc->step++; | |
917e0e71 BV |
482 | } |
483 | break; | |
61c39f54 | 484 | case PATTERN_RANDOM: |
5096c6a6 | 485 | for (i = 0; i < size; i++) |
61c39f54 | 486 | devc->logic_data[i] = (uint8_t)(rand() & 0xff); |
85b5af06 | 487 | break; |
61c39f54 | 488 | case PATTERN_INC: |
c07f60e7 BV |
489 | for (i = 0; i < size; i++) { |
490 | for (j = 0; j < devc->logic_unitsize; j++) { | |
491 | devc->logic_data[i + j] = devc->step; | |
492 | } | |
493 | devc->step++; | |
494 | } | |
c03ed397 | 495 | break; |
61c39f54 BV |
496 | case PATTERN_ALL_LOW: |
497 | case PATTERN_ALL_HIGH: | |
498 | /* These were set when the pattern mode was selected. */ | |
c03ed397 UH |
499 | break; |
500 | default: | |
c07f60e7 | 501 | sr_err("Unknown pattern: %d.", devc->logic_pattern); |
c03ed397 | 502 | break; |
85b5af06 UH |
503 | } |
504 | } | |
505 | ||
85b5af06 | 506 | /* Callback handling data */ |
61c39f54 | 507 | static int prepare_data(int fd, int revents, void *cb_data) |
85b5af06 | 508 | { |
61c39f54 BV |
509 | struct sr_dev_inst *sdi; |
510 | struct dev_context *devc; | |
b9c735a2 | 511 | struct sr_datafeed_packet packet; |
9c939c51 | 512 | struct sr_datafeed_logic logic; |
8b2d41ed BV |
513 | struct sr_probe_group *pg; |
514 | struct analog_gen *ag; | |
515 | GSList *l; | |
516 | uint64_t samples_to_send, expected_samplenum, analog_samples, sending_now; | |
3b203673 | 517 | int64_t time, elapsed; |
1924f59f | 518 | |
cb93f8a9 UH |
519 | (void)fd; |
520 | (void)revents; | |
1924f59f | 521 | |
61c39f54 BV |
522 | sdi = cb_data; |
523 | devc = sdi->priv; | |
524 | ||
3b203673 AG |
525 | /* How many "virtual" samples should we have collected by now? */ |
526 | time = g_get_monotonic_time(); | |
527 | elapsed = time - devc->starttime; | |
a7684294 | 528 | expected_samplenum = elapsed * devc->cur_samplerate / 1000000; |
3b203673 AG |
529 | /* Of those, how many do we still have to send? */ |
530 | samples_to_send = expected_samplenum - devc->samples_counter; | |
531 | ||
a7684294 | 532 | if (devc->limit_samples) { |
3b203673 | 533 | samples_to_send = MIN(samples_to_send, |
c07f60e7 | 534 | devc->limit_samples - devc->samples_counter); |
3b203673 | 535 | } |
85b5af06 | 536 | |
3b203673 | 537 | while (samples_to_send > 0) { |
8b2d41ed | 538 | sending_now = 0; |
3b203673 | 539 | |
c07f60e7 | 540 | /* Logic */ |
8b2d41ed BV |
541 | if (devc->num_logic_probes > 0) { |
542 | sending_now = MIN(samples_to_send, | |
543 | LOGIC_BUFSIZE / devc->logic_unitsize); | |
544 | logic_generator(sdi, sending_now * devc->logic_unitsize); | |
545 | packet.type = SR_DF_LOGIC; | |
546 | packet.payload = &logic; | |
547 | logic.length = sending_now * devc->logic_unitsize; | |
548 | logic.unitsize = devc->logic_unitsize; | |
549 | logic.data = devc->logic_data; | |
550 | sr_session_send(sdi, &packet); | |
551 | } | |
552 | ||
553 | /* Analog, one probe at a time */ | |
554 | if (devc->num_analog_probes > 0) { | |
555 | sending_now = 0; | |
556 | for (l = devc->analog_probe_groups; l; l = l->next) { | |
557 | pg = l->data; | |
558 | ag = pg->priv; | |
559 | packet.type = SR_DF_ANALOG; | |
560 | packet.payload = &ag->packet; | |
561 | analog_samples = MIN(samples_to_send, ag->num_samples); | |
562 | /* Whichever probe group gets there first. */ | |
563 | sending_now = MAX(sending_now, analog_samples); | |
564 | ag->packet.num_samples = analog_samples; | |
565 | sr_session_send(sdi, &packet); | |
566 | } | |
567 | } | |
568 | ||
569 | samples_to_send -= sending_now; | |
3b203673 AG |
570 | devc->samples_counter += sending_now; |
571 | } | |
572 | ||
a7684294 JH |
573 | if (devc->limit_samples && |
574 | devc->samples_counter >= devc->limit_samples) { | |
35e199da | 575 | sr_info("Requested number of samples reached."); |
61c39f54 | 576 | dev_acquisition_stop(sdi, cb_data); |
c216d623 | 577 | return TRUE; |
85b5af06 | 578 | } |
1924f59f | 579 | |
85b5af06 UH |
580 | return TRUE; |
581 | } | |
582 | ||
6078d2c9 | 583 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 584 | { |
61c39f54 | 585 | struct dev_context *devc; |
85b5af06 | 586 | |
e73ffd42 BV |
587 | if (sdi->status != SR_ST_ACTIVE) |
588 | return SR_ERR_DEV_CLOSED; | |
589 | ||
8b2d41ed | 590 | /* TODO: don't start without a sample limit set */ |
61c39f54 | 591 | devc = sdi->priv; |
b4750a3a | 592 | devc->samples_counter = 0; |
85b5af06 | 593 | |
3b203673 AG |
594 | /* |
595 | * Setting two channels connected by a pipe is a remnant from when the | |
596 | * demo driver generated data in a thread, and collected and sent the | |
597 | * data in the main program loop. | |
598 | * They are kept here because it provides a convenient way of setting | |
599 | * up a timeout-based polling mechanism. | |
600 | */ | |
b4750a3a | 601 | if (pipe(devc->pipe_fds)) { |
92bcedf6 | 602 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 603 | return SR_ERR; |
c03ed397 | 604 | } |
85b5af06 | 605 | |
e0532047 | 606 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); |
d35aaf02 | 607 | |
e0532047 | 608 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 609 | |
d35aaf02 | 610 | /* Set channel encoding to binary (default is UTF-8). */ |
e0532047 | 611 | g_io_channel_set_encoding(devc->channel, NULL, NULL); |
d35aaf02 UH |
612 | |
613 | /* Make channels to unbuffered. */ | |
e0532047 | 614 | g_io_channel_set_buffered(devc->channel, FALSE); |
d35aaf02 | 615 | |
e0532047 | 616 | sr_session_source_add_channel(devc->channel, G_IO_IN | G_IO_ERR, |
61c39f54 | 617 | 40, prepare_data, (void *)sdi); |
85b5af06 | 618 | |
4afdfd46 | 619 | /* Send header packet to the session bus. */ |
29a27196 | 620 | std_session_send_df_header(cb_data, LOG_PREFIX); |
f366e86c | 621 | |
3b203673 AG |
622 | /* We use this timestamp to decide how many more samples to send. */ |
623 | devc->starttime = g_get_monotonic_time(); | |
624 | ||
e46b8fb1 | 625 | return SR_OK; |
6239c175 UH |
626 | } |
627 | ||
6078d2c9 | 628 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 629 | { |
8b2d41ed | 630 | struct dev_context *devc; |
c216d623 | 631 | struct sr_datafeed_packet packet; |
7fd3e859 | 632 | |
33ef7573 | 633 | (void)cb_data; |
7fd3e859 | 634 | |
8b2d41ed | 635 | devc = sdi->priv; |
49145a63 AG |
636 | sr_dbg("Stopping aquisition."); |
637 | ||
e0532047 JH |
638 | sr_session_source_remove_channel(devc->channel); |
639 | g_io_channel_shutdown(devc->channel, FALSE, NULL); | |
2150a69b JH |
640 | g_io_channel_unref(devc->channel); |
641 | devc->channel = NULL; | |
c216d623 AG |
642 | |
643 | /* Send last packet. */ | |
644 | packet.type = SR_DF_END; | |
c07f60e7 | 645 | sr_session_send(sdi, &packet); |
7fd3e859 | 646 | |
3010f21c | 647 | return SR_OK; |
6239c175 UH |
648 | } |
649 | ||
c09f0b57 | 650 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
651 | .name = "demo", |
652 | .longname = "Demo driver and pattern generator", | |
653 | .api_version = 1, | |
6078d2c9 UH |
654 | .init = init, |
655 | .cleanup = cleanup, | |
656 | .scan = scan, | |
657 | .dev_list = dev_list, | |
3b412e3a | 658 | .dev_clear = dev_clear, |
035a1078 BV |
659 | .config_get = config_get, |
660 | .config_set = config_set, | |
a1c743fc | 661 | .config_list = config_list, |
6078d2c9 UH |
662 | .dev_open = dev_open, |
663 | .dev_close = dev_close, | |
664 | .dev_acquisition_start = dev_acquisition_start, | |
665 | .dev_acquisition_stop = dev_acquisition_stop, | |
b4750a3a | 666 | .priv = NULL, |
6239c175 | 667 | }; |