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Commit | Line | Data |
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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> |
4374219b | 26 | #include <math.h> |
d35aaf02 UH |
27 | #ifdef _WIN32 |
28 | #include <io.h> | |
29 | #include <fcntl.h> | |
30 | #define pipe(fds) _pipe(fds, 4096, _O_BINARY) | |
31 | #endif | |
45c59c8b BV |
32 | #include "libsigrok.h" |
33 | #include "libsigrok-internal.h" | |
6239c175 | 34 | |
3544f848 | 35 | #define LOG_PREFIX "demo" |
92bcedf6 | 36 | |
c07f60e7 BV |
37 | #define DEFAULT_NUM_LOGIC_PROBES 8 |
38 | #define DEFAULT_NUM_ANALOG_PROBES 4 | |
c03ed397 | 39 | |
8b2d41ed | 40 | /* The size in bytes of chunks to send through the session bus. */ |
61c39f54 | 41 | #define LOGIC_BUFSIZE 4096 |
8b2d41ed BV |
42 | /* Size of the analog pattern space per channel. */ |
43 | #define ANALOG_BUFSIZE 4096 | |
2474d87e | 44 | |
4374219b DJ |
45 | #define ANALOG_AMPLITUDE 25 |
46 | #define ANALOG_SAMPLES_PER_PERIOD 20 | |
47 | ||
2388ae86 | 48 | /* Logic patterns we can generate. */ |
e15f48c2 | 49 | enum { |
0d31276b | 50 | /** |
61c39f54 BV |
51 | * Spells "sigrok" across 8 probes using '0's (with '1's as |
52 | * "background") when displayed using the 'bits' output format. | |
c07f60e7 BV |
53 | * The pattern is repeasted every 8 probes, shifted to the right |
54 | * in time by one bit. | |
0d31276b | 55 | */ |
c8f4624d | 56 | PATTERN_SIGROK, |
0d31276b | 57 | |
c07f60e7 | 58 | /** Pseudo-random values on all probes. */ |
c8f4624d | 59 | PATTERN_RANDOM, |
0d31276b UH |
60 | |
61 | /** | |
c07f60e7 BV |
62 | * Incrementing number across 8 probes. The pattern is repeasted |
63 | * every 8 probes, shifted to the right in time by one bit. | |
0d31276b | 64 | */ |
c8f4624d | 65 | PATTERN_INC, |
c03ed397 | 66 | |
61c39f54 | 67 | /** All probes have a low logic state. */ |
c03ed397 UH |
68 | PATTERN_ALL_LOW, |
69 | ||
61c39f54 | 70 | /** All probes have a high logic state. */ |
c03ed397 | 71 | PATTERN_ALL_HIGH, |
2388ae86 | 72 | }; |
8b2d41ed | 73 | |
2388ae86 BV |
74 | /* Analog patterns we can generate. */ |
75 | enum { | |
8b2d41ed BV |
76 | /** |
77 | * Square wave. | |
78 | */ | |
79 | PATTERN_SQUARE, | |
4374219b | 80 | PATTERN_SINE, |
091c9621 | 81 | PATTERN_TRIANGLE, |
e15f48c2 | 82 | }; |
85b5af06 | 83 | |
8b2d41ed | 84 | static const char *logic_pattern_str[] = { |
61c39f54 BV |
85 | "sigrok", |
86 | "random", | |
87 | "incremental", | |
88 | "all-low", | |
89 | "all-high", | |
90 | }; | |
91 | ||
8b2d41ed BV |
92 | static const char *analog_pattern_str[] = { |
93 | "square", | |
4374219b | 94 | "sine", |
091c9621 | 95 | "triangle", |
8b2d41ed BV |
96 | }; |
97 | ||
98 | struct analog_gen { | |
99 | int pattern; | |
100 | float pattern_data[ANALOG_BUFSIZE]; | |
101 | unsigned int num_samples; | |
102 | struct sr_datafeed_analog packet; | |
103 | }; | |
104 | ||
b4750a3a BV |
105 | /* Private, per-device-instance driver context. */ |
106 | struct dev_context { | |
e15f48c2 | 107 | int pipe_fds[2]; |
e0532047 | 108 | GIOChannel *channel; |
a7684294 JH |
109 | uint64_t cur_samplerate; |
110 | uint64_t limit_samples; | |
111 | uint64_t limit_msec; | |
e15f48c2 | 112 | uint64_t samples_counter; |
3b203673 | 113 | int64_t starttime; |
61c39f54 | 114 | uint64_t step; |
8b2d41ed | 115 | /* Logic */ |
c07f60e7 BV |
116 | int32_t num_logic_probes; |
117 | unsigned int logic_unitsize; | |
2388ae86 | 118 | /* There is only ever one logic probe group, so its pattern goes here. */ |
c07f60e7 BV |
119 | uint8_t logic_pattern; |
120 | unsigned char logic_data[LOGIC_BUFSIZE]; | |
8b2d41ed | 121 | /* Analog */ |
c07f60e7 | 122 | int32_t num_analog_probes; |
8b2d41ed | 123 | GSList *analog_probe_groups; |
c07f60e7 BV |
124 | }; |
125 | ||
7a1da331 | 126 | static const int32_t scanopts[] = { |
c07f60e7 BV |
127 | SR_CONF_NUM_LOGIC_PROBES, |
128 | SR_CONF_NUM_ANALOG_PROBES, | |
e15f48c2 | 129 | }; |
85b5af06 | 130 | |
7a1da331 | 131 | static const int devopts[] = { |
1953564a BV |
132 | SR_CONF_LOGIC_ANALYZER, |
133 | SR_CONF_DEMO_DEV, | |
134 | SR_CONF_SAMPLERATE, | |
1953564a BV |
135 | SR_CONF_LIMIT_SAMPLES, |
136 | SR_CONF_LIMIT_MSEC, | |
6239c175 UH |
137 | }; |
138 | ||
7a1da331 BV |
139 | static const int devopts_pg[] = { |
140 | SR_CONF_PATTERN_MODE, | |
141 | }; | |
142 | ||
d00088ca BV |
143 | static const uint64_t samplerates[] = { |
144 | SR_HZ(1), | |
145 | SR_GHZ(1), | |
146 | SR_HZ(1), | |
4bfbf9fc BV |
147 | }; |
148 | ||
c8f4624d | 149 | static uint8_t pattern_sigrok[] = { |
917e0e71 BV |
150 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, |
151 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
152 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
153 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
154 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
155 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
156 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
157 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
158 | }; | |
159 | ||
dcf03d6d | 160 | SR_PRIV struct sr_dev_driver demo_driver_info; |
a873c594 | 161 | static struct sr_dev_driver *di = &demo_driver_info; |
6239c175 | 162 | |
6078d2c9 | 163 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
6239c175 | 164 | |
c07f60e7 | 165 | |
3b412e3a | 166 | static int dev_clear(void) |
eebb6067 | 167 | { |
1c2d542d | 168 | return std_dev_clear(di, NULL); |
eebb6067 UH |
169 | } |
170 | ||
6078d2c9 | 171 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 172 | { |
f6beaac5 | 173 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
174 | } |
175 | ||
4374219b | 176 | static void generate_analog_pattern(const struct sr_probe_group *probe_group, uint64_t sample_rate) |
8b2d41ed BV |
177 | { |
178 | struct analog_gen *ag; | |
4374219b | 179 | double t, frequency; |
8b2d41ed BV |
180 | float value; |
181 | unsigned int num_samples, i; | |
182 | int last_end; | |
183 | ||
184 | ag = probe_group->priv; | |
4374219b DJ |
185 | num_samples = ANALOG_BUFSIZE / sizeof(float); |
186 | ||
187 | sr_dbg("Generating %s pattern for probe group %s", | |
188 | analog_pattern_str[ag->pattern], | |
189 | probe_group->name); | |
8b2d41ed | 190 | |
4374219b | 191 | switch (ag->pattern) { |
8b2d41ed | 192 | case PATTERN_SQUARE: |
8b2d41ed BV |
193 | value = 5.0; |
194 | last_end = 0; | |
195 | for (i = 0; i < num_samples; i++) { | |
196 | if (i % 5 == 0) | |
197 | value = -value; | |
198 | if (i % 10 == 0) | |
199 | last_end = i - 1; | |
200 | ag->pattern_data[i] = value; | |
201 | } | |
202 | ag->num_samples = last_end; | |
203 | break; | |
4374219b DJ |
204 | |
205 | case PATTERN_SINE: | |
206 | frequency = sample_rate / ANALOG_SAMPLES_PER_PERIOD; | |
207 | ||
208 | /* Make sure the number of samples we put out is an integer | |
209 | * multiple of our period size */ | |
210 | /* FIXME we actually need only one period. A ringbuffer would be | |
211 | * usefull here.*/ | |
212 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
213 | num_samples--; | |
214 | ||
215 | for (i = 0; i < num_samples; i++) { | |
216 | t = (double) i / (double) sample_rate; | |
217 | ag->pattern_data[i] = ANALOG_AMPLITUDE * | |
218 | sin(2 * M_PI * frequency * t); | |
219 | } | |
220 | ||
091c9621 DJ |
221 | ag->num_samples = num_samples; |
222 | break; | |
223 | ||
224 | case PATTERN_TRIANGLE: | |
225 | frequency = sample_rate / ANALOG_SAMPLES_PER_PERIOD; | |
226 | ||
227 | while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) | |
228 | num_samples--; | |
229 | ||
230 | for (i = 0; i < num_samples; i++) { | |
231 | t = (double) i / (double) sample_rate; | |
232 | ag->pattern_data[i] = (2 * ANALOG_AMPLITUDE / M_PI) * | |
233 | asin(sin(2 * M_PI * frequency * t)); | |
234 | } | |
235 | ||
4374219b DJ |
236 | ag->num_samples = num_samples; |
237 | break; | |
8b2d41ed BV |
238 | } |
239 | } | |
240 | ||
6078d2c9 | 241 | static GSList *scan(GSList *options) |
6239c175 | 242 | { |
b4750a3a | 243 | struct drv_context *drvc; |
33ef7573 | 244 | struct dev_context *devc; |
c07f60e7 BV |
245 | struct sr_dev_inst *sdi; |
246 | struct sr_probe *probe; | |
8b2d41ed | 247 | struct sr_probe_group *pg; |
c07f60e7 | 248 | struct sr_config *src; |
8b2d41ed | 249 | struct analog_gen *ag; |
c07f60e7 BV |
250 | GSList *devices, *l; |
251 | int num_logic_probes, num_analog_probes, i; | |
61c39f54 | 252 | char probe_name[16]; |
067d0716 | 253 | |
a873c594 | 254 | drvc = di->priv; |
4b97c74e | 255 | |
c07f60e7 BV |
256 | num_logic_probes = DEFAULT_NUM_LOGIC_PROBES; |
257 | num_analog_probes = DEFAULT_NUM_ANALOG_PROBES; | |
258 | for (l = options; l; l = l->next) { | |
259 | src = l->data; | |
260 | switch (src->key) { | |
261 | case SR_CONF_NUM_LOGIC_PROBES: | |
262 | num_logic_probes = g_variant_get_int32(src->data); | |
263 | break; | |
264 | case SR_CONF_NUM_ANALOG_PROBES: | |
265 | num_analog_probes = g_variant_get_int32(src->data); | |
266 | break; | |
267 | } | |
268 | } | |
85b5af06 | 269 | |
c07f60e7 | 270 | devices = NULL; |
61c39f54 | 271 | sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Demo device", NULL, NULL); |
c03ed397 | 272 | if (!sdi) { |
e45ad6e2 UH |
273 | sr_err("Device instance creation failed."); |
274 | return NULL; | |
c03ed397 | 275 | } |
a873c594 | 276 | sdi->driver = di; |
e15f48c2 | 277 | |
8b2d41ed BV |
278 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { |
279 | sr_err("Device context malloc failed."); | |
280 | return NULL; | |
281 | } | |
282 | devc->cur_samplerate = SR_KHZ(200); | |
283 | devc->limit_samples = 0; | |
284 | devc->limit_msec = 0; | |
285 | devc->step = 0; | |
286 | devc->num_logic_probes = num_logic_probes; | |
287 | devc->logic_unitsize = (devc->num_logic_probes + 7) / 8; | |
288 | devc->logic_pattern = PATTERN_SIGROK; | |
289 | devc->num_analog_probes = num_analog_probes; | |
290 | devc->analog_probe_groups = NULL; | |
291 | ||
292 | /* Logic probes, all in one probe group. */ | |
293 | if (!(pg = g_try_malloc(sizeof(struct sr_probe_group)))) | |
294 | return NULL; | |
295 | pg->name = g_strdup("Logic"); | |
296 | pg->probes = NULL; | |
297 | pg->priv = NULL; | |
c07f60e7 | 298 | for (i = 0; i < num_logic_probes; i++) { |
61c39f54 BV |
299 | sprintf(probe_name, "D%d", i); |
300 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, probe_name))) | |
87ca93c5 BV |
301 | return NULL; |
302 | sdi->probes = g_slist_append(sdi->probes, probe); | |
8b2d41ed | 303 | pg->probes = g_slist_append(pg->probes, probe); |
87ca93c5 | 304 | } |
8b2d41ed | 305 | sdi->probe_groups = g_slist_append(NULL, pg); |
87ca93c5 | 306 | |
8b2d41ed | 307 | /* Analog probes, probe groups and pattern generators. */ |
c07f60e7 BV |
308 | for (i = 0; i < num_analog_probes; i++) { |
309 | sprintf(probe_name, "A%d", i); | |
310 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, probe_name))) | |
311 | return NULL; | |
312 | sdi->probes = g_slist_append(sdi->probes, probe); | |
c07f60e7 | 313 | |
8b2d41ed BV |
314 | /* Every analog probe gets its own probe group. */ |
315 | if (!(pg = g_try_malloc(sizeof(struct sr_probe_group)))) | |
316 | return NULL; | |
317 | pg->name = g_strdup(probe_name); | |
318 | pg->probes = g_slist_append(NULL, probe); | |
85b5af06 | 319 | |
8b2d41ed BV |
320 | /* Every probe group gets a generator struct. */ |
321 | if (!(ag = g_try_malloc(sizeof(struct analog_gen)))) | |
322 | return NULL; | |
323 | ag->packet.probes = pg->probes; | |
324 | ag->packet.mq = 0; | |
325 | ag->packet.mqflags = 0; | |
326 | ag->packet.unit = SR_UNIT_VOLT; | |
327 | ag->packet.data = ag->pattern_data; | |
4374219b | 328 | ag->pattern = PATTERN_SINE; |
8b2d41ed | 329 | pg->priv = ag; |
8b2d41ed BV |
330 | |
331 | sdi->probe_groups = g_slist_append(sdi->probe_groups, pg); | |
332 | devc->analog_probe_groups = g_slist_append(devc->analog_probe_groups, pg); | |
33ef7573 | 333 | } |
33ef7573 JH |
334 | |
335 | sdi->priv = devc; | |
8b2d41ed BV |
336 | devices = g_slist_append(devices, sdi); |
337 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
33ef7573 | 338 | |
067d0716 | 339 | return devices; |
6239c175 UH |
340 | } |
341 | ||
6078d2c9 | 342 | static GSList *dev_list(void) |
811deee4 | 343 | { |
0e94d524 | 344 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
345 | } |
346 | ||
6078d2c9 | 347 | static int dev_open(struct sr_dev_inst *sdi) |
6239c175 | 348 | { |
e73ffd42 | 349 | sdi->status = SR_ST_ACTIVE; |
697785d1 | 350 | |
e46b8fb1 | 351 | return SR_OK; |
6239c175 UH |
352 | } |
353 | ||
6078d2c9 | 354 | static int dev_close(struct sr_dev_inst *sdi) |
6239c175 | 355 | { |
decfe89d | 356 | sdi->status = SR_ST_INACTIVE; |
697785d1 UH |
357 | |
358 | return SR_OK; | |
6239c175 UH |
359 | } |
360 | ||
6078d2c9 | 361 | static int cleanup(void) |
6239c175 | 362 | { |
1c2d542d | 363 | return dev_clear(); |
6239c175 UH |
364 | } |
365 | ||
8f996b89 ML |
366 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
367 | const struct sr_probe_group *probe_group) | |
6239c175 | 368 | { |
c07f60e7 | 369 | struct dev_context *devc; |
2388ae86 BV |
370 | struct sr_probe *probe; |
371 | struct analog_gen *ag; | |
372 | int pattern; | |
6f57fd96 | 373 | |
2388ae86 BV |
374 | if (!sdi) |
375 | return SR_ERR_ARG; | |
8f996b89 | 376 | |
c07f60e7 | 377 | devc = sdi->priv; |
035a1078 | 378 | switch (id) { |
123e1313 | 379 | case SR_CONF_SAMPLERATE: |
a7684294 | 380 | *data = g_variant_new_uint64(devc->cur_samplerate); |
6239c175 | 381 | break; |
2474d87e | 382 | case SR_CONF_LIMIT_SAMPLES: |
a7684294 | 383 | *data = g_variant_new_uint64(devc->limit_samples); |
2474d87e BV |
384 | break; |
385 | case SR_CONF_LIMIT_MSEC: | |
a7684294 | 386 | *data = g_variant_new_uint64(devc->limit_msec); |
2474d87e BV |
387 | break; |
388 | case SR_CONF_PATTERN_MODE: | |
2388ae86 BV |
389 | if (!probe_group) |
390 | return SR_ERR_PROBE_GROUP; | |
391 | probe = probe_group->probes->data; | |
392 | if (probe->type == SR_PROBE_LOGIC) { | |
393 | pattern = devc->logic_pattern; | |
394 | *data = g_variant_new_string(logic_pattern_str[pattern]); | |
395 | } else if (probe->type == SR_PROBE_ANALOG) { | |
396 | ag = probe_group->priv; | |
397 | pattern = ag->pattern; | |
398 | *data = g_variant_new_string(analog_pattern_str[pattern]); | |
399 | } else | |
400 | return SR_ERR_BUG; | |
c07f60e7 BV |
401 | break; |
402 | case SR_CONF_NUM_LOGIC_PROBES: | |
403 | *data = g_variant_new_int32(devc->num_logic_probes); | |
404 | break; | |
405 | case SR_CONF_NUM_ANALOG_PROBES: | |
406 | *data = g_variant_new_int32(devc->num_analog_probes); | |
2474d87e | 407 | break; |
7dfcf010 | 408 | default: |
bd6fbf62 | 409 | return SR_ERR_NA; |
6239c175 UH |
410 | } |
411 | ||
dfb0fa1a | 412 | return SR_OK; |
6239c175 UH |
413 | } |
414 | ||
8f996b89 ML |
415 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
416 | const struct sr_probe_group *probe_group) | |
6239c175 | 417 | { |
8b2d41ed | 418 | struct dev_context *devc; |
4374219b | 419 | struct analog_gen *ag; |
2388ae86 BV |
420 | struct sr_probe *probe; |
421 | int pattern, ret; | |
61c39f54 | 422 | unsigned int i; |
1b79df2f | 423 | const char *stropt; |
6239c175 | 424 | |
8b2d41ed | 425 | devc = sdi->priv; |
6239c175 | 426 | |
e73ffd42 BV |
427 | if (sdi->status != SR_ST_ACTIVE) |
428 | return SR_ERR_DEV_CLOSED; | |
429 | ||
2388ae86 BV |
430 | ret = SR_OK; |
431 | switch (id) { | |
432 | case SR_CONF_SAMPLERATE: | |
a7684294 | 433 | devc->cur_samplerate = g_variant_get_uint64(data); |
61c39f54 | 434 | sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); |
2388ae86 BV |
435 | break; |
436 | case SR_CONF_LIMIT_SAMPLES: | |
a7684294 JH |
437 | devc->limit_msec = 0; |
438 | devc->limit_samples = g_variant_get_uint64(data); | |
8b2d41ed | 439 | sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); |
2388ae86 BV |
440 | break; |
441 | case SR_CONF_LIMIT_MSEC: | |
a7684294 JH |
442 | devc->limit_msec = g_variant_get_uint64(data); |
443 | devc->limit_samples = 0; | |
8b2d41ed | 444 | sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); |
2388ae86 BV |
445 | break; |
446 | case SR_CONF_PATTERN_MODE: | |
447 | if (!probe_group) | |
448 | return SR_ERR_PROBE_GROUP; | |
d00088ca | 449 | stropt = g_variant_get_string(data, NULL); |
2388ae86 BV |
450 | probe = probe_group->probes->data; |
451 | pattern = -1; | |
452 | if (probe->type == SR_PROBE_LOGIC) { | |
453 | for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { | |
454 | if (!strcmp(stropt, logic_pattern_str[i])) { | |
455 | pattern = i; | |
8b2d41ed BV |
456 | break; |
457 | } | |
458 | } | |
2388ae86 BV |
459 | if (pattern == -1) |
460 | return SR_ERR_ARG; | |
461 | devc->logic_pattern = pattern; | |
462 | ||
463 | /* Might as well do this now, these are static. */ | |
464 | if (pattern == PATTERN_ALL_LOW) | |
8b2d41ed | 465 | memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); |
2388ae86 | 466 | else if (pattern == PATTERN_ALL_HIGH) |
8b2d41ed | 467 | memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); |
2388ae86 BV |
468 | sr_dbg("Setting logic pattern to %s", |
469 | logic_pattern_str[pattern]); | |
470 | } else if (probe->type == SR_PROBE_ANALOG) { | |
471 | for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { | |
472 | if (!strcmp(stropt, analog_pattern_str[i])) { | |
473 | pattern = i; | |
474 | break; | |
8b2d41ed | 475 | } |
8b2d41ed | 476 | } |
2388ae86 BV |
477 | if (pattern == -1) |
478 | return SR_ERR_ARG; | |
4374219b DJ |
479 | sr_dbg("Setting analog pattern for probe group %s to %s", |
480 | probe_group->name, | |
2388ae86 | 481 | analog_pattern_str[pattern]); |
4374219b DJ |
482 | ag = probe_group->priv; |
483 | ag->pattern = pattern; | |
2388ae86 BV |
484 | } else |
485 | return SR_ERR_BUG; | |
486 | break; | |
487 | default: | |
bd6fbf62 | 488 | ret = SR_ERR_NA; |
6239c175 UH |
489 | } |
490 | ||
491 | return ret; | |
492 | } | |
493 | ||
8f996b89 ML |
494 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
495 | const struct sr_probe_group *probe_group) | |
a1c743fc | 496 | { |
7a1da331 | 497 | struct sr_probe *probe; |
d00088ca BV |
498 | GVariant *gvar; |
499 | GVariantBuilder gvb; | |
a1c743fc BV |
500 | |
501 | (void)sdi; | |
502 | ||
7a1da331 | 503 | if (key == SR_CONF_SCAN_OPTIONS) { |
c07f60e7 | 504 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
7a1da331 BV |
505 | scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); |
506 | return SR_OK; | |
507 | } | |
508 | ||
509 | if (!sdi) | |
510 | return SR_ERR_ARG; | |
511 | ||
512 | if (!probe_group) { | |
513 | switch (key) { | |
514 | case SR_CONF_DEVICE_OPTIONS: | |
515 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
516 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
517 | break; | |
518 | case SR_CONF_SAMPLERATE: | |
519 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
520 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
521 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
522 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
523 | *data = g_variant_builder_end(&gvb); | |
524 | break; | |
525 | default: | |
526 | return SR_ERR_NA; | |
527 | } | |
528 | } else { | |
529 | probe = probe_group->probes->data; | |
530 | switch (key) { | |
531 | case SR_CONF_DEVICE_OPTIONS: | |
532 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
533 | devopts_pg, ARRAY_SIZE(devopts_pg), sizeof(int32_t)); | |
534 | break; | |
535 | case SR_CONF_PATTERN_MODE: | |
536 | if (probe->type == SR_PROBE_LOGIC) | |
537 | *data = g_variant_new_strv(logic_pattern_str, | |
538 | ARRAY_SIZE(logic_pattern_str)); | |
2388ae86 | 539 | else if (probe->type == SR_PROBE_ANALOG) |
7a1da331 BV |
540 | *data = g_variant_new_strv(analog_pattern_str, |
541 | ARRAY_SIZE(analog_pattern_str)); | |
2388ae86 BV |
542 | else |
543 | return SR_ERR_BUG; | |
7a1da331 BV |
544 | break; |
545 | default: | |
546 | return SR_ERR_NA; | |
547 | } | |
a1c743fc BV |
548 | } |
549 | ||
550 | return SR_OK; | |
551 | } | |
552 | ||
c07f60e7 | 553 | static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) |
85b5af06 | 554 | { |
61c39f54 | 555 | struct dev_context *devc; |
c07f60e7 BV |
556 | uint64_t i, j; |
557 | uint8_t pat; | |
85b5af06 | 558 | |
61c39f54 | 559 | devc = sdi->priv; |
85b5af06 | 560 | |
c07f60e7 | 561 | switch (devc->logic_pattern) { |
61c39f54 | 562 | case PATTERN_SIGROK: |
c07f60e7 BV |
563 | memset(devc->logic_data, 0x00, size); |
564 | for (i = 0; i < size; i += devc->logic_unitsize) { | |
565 | for (j = 0; j < devc->logic_unitsize; j++) { | |
566 | pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; | |
567 | devc->logic_data[i + j] = ~pat; | |
568 | } | |
569 | devc->step++; | |
917e0e71 BV |
570 | } |
571 | break; | |
61c39f54 | 572 | case PATTERN_RANDOM: |
5096c6a6 | 573 | for (i = 0; i < size; i++) |
61c39f54 | 574 | devc->logic_data[i] = (uint8_t)(rand() & 0xff); |
85b5af06 | 575 | break; |
61c39f54 | 576 | case PATTERN_INC: |
c07f60e7 BV |
577 | for (i = 0; i < size; i++) { |
578 | for (j = 0; j < devc->logic_unitsize; j++) { | |
579 | devc->logic_data[i + j] = devc->step; | |
580 | } | |
581 | devc->step++; | |
582 | } | |
c03ed397 | 583 | break; |
61c39f54 BV |
584 | case PATTERN_ALL_LOW: |
585 | case PATTERN_ALL_HIGH: | |
586 | /* These were set when the pattern mode was selected. */ | |
c03ed397 UH |
587 | break; |
588 | default: | |
c07f60e7 | 589 | sr_err("Unknown pattern: %d.", devc->logic_pattern); |
c03ed397 | 590 | break; |
85b5af06 UH |
591 | } |
592 | } | |
593 | ||
85b5af06 | 594 | /* Callback handling data */ |
61c39f54 | 595 | static int prepare_data(int fd, int revents, void *cb_data) |
85b5af06 | 596 | { |
61c39f54 BV |
597 | struct sr_dev_inst *sdi; |
598 | struct dev_context *devc; | |
b9c735a2 | 599 | struct sr_datafeed_packet packet; |
9c939c51 | 600 | struct sr_datafeed_logic logic; |
8b2d41ed BV |
601 | struct sr_probe_group *pg; |
602 | struct analog_gen *ag; | |
603 | GSList *l; | |
604 | uint64_t samples_to_send, expected_samplenum, analog_samples, sending_now; | |
3b203673 | 605 | int64_t time, elapsed; |
1924f59f | 606 | |
cb93f8a9 UH |
607 | (void)fd; |
608 | (void)revents; | |
1924f59f | 609 | |
61c39f54 BV |
610 | sdi = cb_data; |
611 | devc = sdi->priv; | |
612 | ||
3b203673 AG |
613 | /* How many "virtual" samples should we have collected by now? */ |
614 | time = g_get_monotonic_time(); | |
615 | elapsed = time - devc->starttime; | |
a7684294 | 616 | expected_samplenum = elapsed * devc->cur_samplerate / 1000000; |
3b203673 AG |
617 | /* Of those, how many do we still have to send? */ |
618 | samples_to_send = expected_samplenum - devc->samples_counter; | |
619 | ||
a7684294 | 620 | if (devc->limit_samples) { |
3b203673 | 621 | samples_to_send = MIN(samples_to_send, |
c07f60e7 | 622 | devc->limit_samples - devc->samples_counter); |
3b203673 | 623 | } |
85b5af06 | 624 | |
3b203673 | 625 | while (samples_to_send > 0) { |
8b2d41ed | 626 | sending_now = 0; |
3b203673 | 627 | |
c07f60e7 | 628 | /* Logic */ |
8b2d41ed BV |
629 | if (devc->num_logic_probes > 0) { |
630 | sending_now = MIN(samples_to_send, | |
631 | LOGIC_BUFSIZE / devc->logic_unitsize); | |
632 | logic_generator(sdi, sending_now * devc->logic_unitsize); | |
633 | packet.type = SR_DF_LOGIC; | |
634 | packet.payload = &logic; | |
635 | logic.length = sending_now * devc->logic_unitsize; | |
636 | logic.unitsize = devc->logic_unitsize; | |
637 | logic.data = devc->logic_data; | |
638 | sr_session_send(sdi, &packet); | |
639 | } | |
640 | ||
641 | /* Analog, one probe at a time */ | |
642 | if (devc->num_analog_probes > 0) { | |
643 | sending_now = 0; | |
644 | for (l = devc->analog_probe_groups; l; l = l->next) { | |
645 | pg = l->data; | |
646 | ag = pg->priv; | |
647 | packet.type = SR_DF_ANALOG; | |
648 | packet.payload = &ag->packet; | |
4374219b DJ |
649 | |
650 | /* FIXME we should make sure we output a whole | |
651 | * period of data before we send out again the | |
652 | * beginning of our buffer. A ring buffer would | |
653 | * help here as well */ | |
654 | ||
8b2d41ed BV |
655 | analog_samples = MIN(samples_to_send, ag->num_samples); |
656 | /* Whichever probe group gets there first. */ | |
657 | sending_now = MAX(sending_now, analog_samples); | |
658 | ag->packet.num_samples = analog_samples; | |
659 | sr_session_send(sdi, &packet); | |
660 | } | |
661 | } | |
662 | ||
663 | samples_to_send -= sending_now; | |
3b203673 AG |
664 | devc->samples_counter += sending_now; |
665 | } | |
666 | ||
a7684294 JH |
667 | if (devc->limit_samples && |
668 | devc->samples_counter >= devc->limit_samples) { | |
35e199da | 669 | sr_info("Requested number of samples reached."); |
61c39f54 | 670 | dev_acquisition_stop(sdi, cb_data); |
c216d623 | 671 | return TRUE; |
85b5af06 | 672 | } |
1924f59f | 673 | |
85b5af06 UH |
674 | return TRUE; |
675 | } | |
676 | ||
6078d2c9 | 677 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 678 | { |
4374219b | 679 | GSList *l; |
61c39f54 | 680 | struct dev_context *devc; |
85b5af06 | 681 | |
e73ffd42 BV |
682 | if (sdi->status != SR_ST_ACTIVE) |
683 | return SR_ERR_DEV_CLOSED; | |
684 | ||
8b2d41ed | 685 | /* TODO: don't start without a sample limit set */ |
61c39f54 | 686 | devc = sdi->priv; |
b4750a3a | 687 | devc->samples_counter = 0; |
85b5af06 | 688 | |
3b203673 AG |
689 | /* |
690 | * Setting two channels connected by a pipe is a remnant from when the | |
691 | * demo driver generated data in a thread, and collected and sent the | |
692 | * data in the main program loop. | |
693 | * They are kept here because it provides a convenient way of setting | |
694 | * up a timeout-based polling mechanism. | |
695 | */ | |
b4750a3a | 696 | if (pipe(devc->pipe_fds)) { |
92bcedf6 | 697 | sr_err("%s: pipe() failed", __func__); |
e46b8fb1 | 698 | return SR_ERR; |
c03ed397 | 699 | } |
85b5af06 | 700 | |
4374219b DJ |
701 | for (l = devc->analog_probe_groups; l; l = l->next) { |
702 | generate_analog_pattern(l->data, devc->cur_samplerate); | |
703 | } | |
704 | ||
e0532047 | 705 | devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); |
d35aaf02 | 706 | |
e0532047 | 707 | g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); |
e6e8f8e0 | 708 | |
d35aaf02 | 709 | /* Set channel encoding to binary (default is UTF-8). */ |
e0532047 | 710 | g_io_channel_set_encoding(devc->channel, NULL, NULL); |
d35aaf02 UH |
711 | |
712 | /* Make channels to unbuffered. */ | |
e0532047 | 713 | g_io_channel_set_buffered(devc->channel, FALSE); |
d35aaf02 | 714 | |
e0532047 | 715 | sr_session_source_add_channel(devc->channel, G_IO_IN | G_IO_ERR, |
61c39f54 | 716 | 40, prepare_data, (void *)sdi); |
85b5af06 | 717 | |
4afdfd46 | 718 | /* Send header packet to the session bus. */ |
29a27196 | 719 | std_session_send_df_header(cb_data, LOG_PREFIX); |
f366e86c | 720 | |
3b203673 AG |
721 | /* We use this timestamp to decide how many more samples to send. */ |
722 | devc->starttime = g_get_monotonic_time(); | |
723 | ||
e46b8fb1 | 724 | return SR_OK; |
6239c175 UH |
725 | } |
726 | ||
6078d2c9 | 727 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
6239c175 | 728 | { |
8b2d41ed | 729 | struct dev_context *devc; |
c216d623 | 730 | struct sr_datafeed_packet packet; |
7fd3e859 | 731 | |
33ef7573 | 732 | (void)cb_data; |
7fd3e859 | 733 | |
8b2d41ed | 734 | devc = sdi->priv; |
49145a63 AG |
735 | sr_dbg("Stopping aquisition."); |
736 | ||
e0532047 JH |
737 | sr_session_source_remove_channel(devc->channel); |
738 | g_io_channel_shutdown(devc->channel, FALSE, NULL); | |
2150a69b JH |
739 | g_io_channel_unref(devc->channel); |
740 | devc->channel = NULL; | |
c216d623 AG |
741 | |
742 | /* Send last packet. */ | |
743 | packet.type = SR_DF_END; | |
c07f60e7 | 744 | sr_session_send(sdi, &packet); |
7fd3e859 | 745 | |
3010f21c | 746 | return SR_OK; |
6239c175 UH |
747 | } |
748 | ||
c09f0b57 | 749 | SR_PRIV struct sr_dev_driver demo_driver_info = { |
e519ba86 UH |
750 | .name = "demo", |
751 | .longname = "Demo driver and pattern generator", | |
752 | .api_version = 1, | |
6078d2c9 UH |
753 | .init = init, |
754 | .cleanup = cleanup, | |
755 | .scan = scan, | |
756 | .dev_list = dev_list, | |
3b412e3a | 757 | .dev_clear = dev_clear, |
035a1078 BV |
758 | .config_get = config_get, |
759 | .config_set = config_set, | |
a1c743fc | 760 | .config_list = config_list, |
6078d2c9 UH |
761 | .dev_open = dev_open, |
762 | .dev_close = dev_close, | |
763 | .dev_acquisition_start = dev_acquisition_start, | |
764 | .dev_acquisition_stop = dev_acquisition_stop, | |
b4750a3a | 765 | .priv = NULL, |
6239c175 | 766 | }; |