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Commit | Line | Data |
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6239c175 UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
fc96e6f8 | 5 | * Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com> |
6239c175 UH |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
8038e90a | 22 | #define DEMO_ANALOG |
764f887f | 23 | |
6239c175 | 24 | #include <stdlib.h> |
85b5af06 | 25 | #include <unistd.h> |
6239c175 UH |
26 | #include <string.h> |
27 | #include <sigrok.h> | |
8038e90a | 28 | #include <math.h> |
d35aaf02 UH |
29 | #ifdef _WIN32 |
30 | #include <io.h> | |
31 | #include <fcntl.h> | |
32 | #define pipe(fds) _pipe(fds, 4096, _O_BINARY) | |
33 | #endif | |
6239c175 UH |
34 | #include "config.h" |
35 | ||
764f887f DR |
36 | #ifdef DEMO_ANALOG |
37 | #define NUM_PROBES 9 | |
38 | #else | |
e15f48c2 | 39 | #define NUM_PROBES 8 |
764f887f | 40 | #endif |
e15f48c2 BV |
41 | #define DEMONAME "Demo device" |
42 | /* size of chunks to send through the session bus */ | |
764f887f DR |
43 | #ifdef DEMO_ANALOG |
44 | #define BUFSIZE 32768 | |
45 | #else | |
e15f48c2 | 46 | #define BUFSIZE 4096 |
764f887f | 47 | #endif |
85b5af06 | 48 | |
e15f48c2 | 49 | enum { |
917e0e71 | 50 | GENMODE_DEFAULT, |
e15f48c2 BV |
51 | GENMODE_RANDOM, |
52 | GENMODE_INC, | |
8038e90a | 53 | GENMODE_SINE, |
e15f48c2 | 54 | }; |
85b5af06 | 55 | |
d35aaf02 UH |
56 | GIOChannel *channels[2]; |
57 | ||
e15f48c2 BV |
58 | struct databag { |
59 | int pipe_fds[2]; | |
60 | uint8_t sample_generator; | |
61 | uint8_t thread_running; | |
62 | uint64_t samples_counter; | |
63 | int device_index; | |
e15f48c2 | 64 | gpointer session_device_id; |
b9cc3629 | 65 | GTimer *timer; |
e15f48c2 | 66 | }; |
85b5af06 | 67 | |
6239c175 UH |
68 | static int capabilities[] = { |
69 | HWCAP_LOGIC_ANALYZER, | |
e15f48c2 | 70 | HWCAP_PATTERN_MODE, |
6239c175 | 71 | HWCAP_LIMIT_SAMPLES, |
b9cc3629 | 72 | HWCAP_LIMIT_MSEC, |
ba3d481b | 73 | HWCAP_CONTINUOUS |
6239c175 UH |
74 | }; |
75 | ||
02440dd8 | 76 | static const char *patternmodes[] = { |
e15f48c2 BV |
77 | "random", |
78 | "incremental", | |
8038e90a | 79 | "sine", |
02440dd8 | 80 | NULL, |
85b5af06 UH |
81 | }; |
82 | ||
764f887f | 83 | #ifndef DEMO_ANALOG |
917e0e71 BV |
84 | static uint8_t genmode_default[] = { |
85 | 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00, | |
86 | 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00, | |
87 | 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00, | |
88 | 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00, | |
89 | 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00, | |
90 | 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00, | |
91 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
92 | 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
93 | }; | |
764f887f | 94 | #endif |
917e0e71 | 95 | |
85b5af06 UH |
96 | /* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */ |
97 | static GSList *device_instances = NULL; | |
1924f59f | 98 | static uint64_t cur_samplerate = KHZ(200); |
b9cc3629 BV |
99 | static uint64_t limit_samples = 0; |
100 | static uint64_t limit_msec = 0; | |
917e0e71 | 101 | static int default_genmode = GENMODE_DEFAULT; |
b9cc3629 BV |
102 | static GThread *my_thread; |
103 | static int thread_running; | |
6239c175 | 104 | |
6239c175 UH |
105 | static void hw_stop_acquisition(int device_index, gpointer session_device_id); |
106 | ||
6239c175 UH |
107 | static int hw_init(char *deviceinfo) |
108 | { | |
85b5af06 UH |
109 | struct sigrok_device_instance *sdi; |
110 | ||
e15f48c2 BV |
111 | /* Avoid compiler warnings. */ |
112 | deviceinfo = deviceinfo; | |
85b5af06 | 113 | |
e15f48c2 | 114 | sdi = sigrok_device_instance_new(0, ST_ACTIVE, DEMONAME, NULL, NULL); |
85b5af06 UH |
115 | if (!sdi) |
116 | return 0; | |
e15f48c2 | 117 | |
85b5af06 UH |
118 | device_instances = g_slist_append(device_instances, sdi); |
119 | ||
120 | return 1; | |
6239c175 UH |
121 | } |
122 | ||
123 | static int hw_opendev(int device_index) | |
124 | { | |
17e1afcb | 125 | /* Avoid compiler warnings. */ |
6239c175 UH |
126 | device_index = device_index; |
127 | ||
128 | /* Nothing needed so far. */ | |
129 | return SIGROK_OK; | |
130 | } | |
131 | ||
132 | static void hw_closedev(int device_index) | |
133 | { | |
17e1afcb | 134 | /* Avoid compiler warnings. */ |
6239c175 UH |
135 | device_index = device_index; |
136 | ||
137 | /* Nothing needed so far. */ | |
138 | } | |
139 | ||
140 | static void hw_cleanup(void) | |
141 | { | |
142 | /* Nothing needed so far. */ | |
143 | } | |
144 | ||
145 | static void *hw_get_device_info(int device_index, int device_info_id) | |
146 | { | |
85b5af06 UH |
147 | struct sigrok_device_instance *sdi; |
148 | void *info = NULL; | |
149 | ||
150 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) | |
151 | return NULL; | |
152 | ||
6239c175 UH |
153 | switch (device_info_id) { |
154 | case DI_INSTANCE: | |
85b5af06 | 155 | info = sdi; |
6239c175 UH |
156 | break; |
157 | case DI_NUM_PROBES: | |
158 | info = GINT_TO_POINTER(NUM_PROBES); | |
159 | break; | |
6239c175 UH |
160 | case DI_CUR_SAMPLERATE: |
161 | info = &cur_samplerate; | |
162 | break; | |
e15f48c2 BV |
163 | case DI_PATTERNMODES: |
164 | info = &patternmodes; | |
165 | break; | |
6239c175 UH |
166 | } |
167 | ||
168 | return info; | |
169 | } | |
170 | ||
171 | static int hw_get_status(int device_index) | |
172 | { | |
17e1afcb | 173 | /* Avoid compiler warnings. */ |
6239c175 | 174 | device_index = device_index; |
5096c6a6 | 175 | |
e15f48c2 | 176 | return ST_ACTIVE; |
6239c175 UH |
177 | } |
178 | ||
179 | static int *hw_get_capabilities(void) | |
180 | { | |
181 | return capabilities; | |
182 | } | |
183 | ||
184 | static int hw_set_configuration(int device_index, int capability, void *value) | |
185 | { | |
186 | int ret; | |
85b5af06 | 187 | uint64_t *tmp_u64; |
e15f48c2 | 188 | char *stropt; |
6239c175 | 189 | |
17e1afcb | 190 | /* Avoid compiler warnings. */ |
6239c175 UH |
191 | device_index = device_index; |
192 | ||
e15f48c2 | 193 | if (capability == HWCAP_PROBECONFIG) { |
02440dd8 | 194 | /* Nothing to do. */ |
85b5af06 | 195 | ret = SIGROK_OK; |
6239c175 | 196 | } else if (capability == HWCAP_LIMIT_SAMPLES) { |
85b5af06 UH |
197 | tmp_u64 = value; |
198 | limit_samples = *tmp_u64; | |
6239c175 | 199 | ret = SIGROK_OK; |
b9cc3629 BV |
200 | } else if (capability == HWCAP_LIMIT_MSEC) { |
201 | tmp_u64 = value; | |
202 | limit_msec = *tmp_u64; | |
203 | ret = SIGROK_OK; | |
e15f48c2 BV |
204 | } else if (capability == HWCAP_PATTERN_MODE) { |
205 | stropt = value; | |
206 | if (!strcmp(stropt, "random")) { | |
207 | default_genmode = GENMODE_RANDOM; | |
208 | ret = SIGROK_OK; | |
209 | } else if (!strcmp(stropt, "incremental")) { | |
210 | default_genmode = GENMODE_INC; | |
211 | ret = SIGROK_OK; | |
8038e90a DR |
212 | } else if (!strcmp(stropt, "sine")) { |
213 | default_genmode = GENMODE_SINE; | |
214 | ret = SIGROK_OK; | |
e15f48c2 BV |
215 | } else { |
216 | ret = SIGROK_ERR; | |
217 | } | |
6239c175 UH |
218 | } else { |
219 | ret = SIGROK_ERR; | |
220 | } | |
221 | ||
222 | return ret; | |
223 | } | |
224 | ||
5096c6a6 | 225 | static void samples_generator(uint8_t *buf, uint64_t size, void *data) |
85b5af06 UH |
226 | { |
227 | struct databag *mydata = data; | |
917e0e71 | 228 | uint64_t p, i; |
764f887f DR |
229 | #ifdef DEMO_ANALOG |
230 | /* | |
231 | * We will simulate a device with 8 logic probes and 1 analog probe. | |
232 | * This fictional device sends the data packed: 8 bits for 8 logic | |
233 | * probes and 16 bits for the analog probe, in this order. | |
234 | * Total of 24 bits. | |
235 | * I could just generate a properly formatted DF_ANALOG packet here, | |
236 | * but I will leave the formatting to receive_data() to make its code | |
237 | * more like a real hardware driver. | |
238 | */ | |
239 | memset(buf, 0, size * 3); | |
240 | ||
241 | switch (mydata->sample_generator) { | |
242 | default: | |
243 | case GENMODE_DEFAULT: | |
8038e90a DR |
244 | case GENMODE_SINE: |
245 | for (i = 0; i < size * 3; i += 3) { | |
246 | *(buf + i) = i / 3; | |
247 | *(uint16_t *) (buf + i + 1) = | |
248 | (uint16_t) (sin(i / 3) * 256 * 30); | |
249 | } | |
250 | break; | |
764f887f DR |
251 | case GENMODE_RANDOM: |
252 | for (i = 0; i < size * 3; i += 3) { | |
253 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
254 | *(uint16_t *) (buf + i + 1) = (uint16_t)(rand() & 0xffff); | |
255 | } | |
256 | break; | |
257 | case GENMODE_INC: | |
258 | for (i = 0; i < size * 3; i += 3) { | |
259 | *(buf + i) = i / 3; | |
260 | *(uint16_t *)(buf + i + 1) = i / 3 * 256 * 10; | |
261 | } | |
262 | break; | |
263 | } | |
264 | #else | |
85b5af06 | 265 | |
5096c6a6 | 266 | memset(buf, 0, size); |
85b5af06 UH |
267 | |
268 | switch (mydata->sample_generator) { | |
917e0e71 BV |
269 | case GENMODE_DEFAULT: |
270 | p = 0; | |
271 | for (i = 0; i < size; i++) { | |
272 | *(buf + i) = ~(genmode_default[p] >> 1); | |
273 | if (++p == 64) | |
274 | p = 0; | |
275 | } | |
276 | break; | |
85b5af06 | 277 | case GENMODE_RANDOM: /* Random */ |
5096c6a6 UH |
278 | for (i = 0; i < size; i++) |
279 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 UH |
280 | break; |
281 | case GENMODE_INC: /* Simple increment */ | |
5096c6a6 | 282 | for (i = 0; i < size; i++) |
85b5af06 UH |
283 | *(buf + i) = i; |
284 | break; | |
285 | } | |
764f887f | 286 | #endif |
85b5af06 UH |
287 | } |
288 | ||
289 | /* Thread function */ | |
290 | static void thread_func(void *data) | |
291 | { | |
292 | struct databag *mydata = data; | |
293 | uint8_t buf[BUFSIZE]; | |
294 | uint64_t nb_to_send = 0; | |
d35aaf02 | 295 | int bytes_written; |
1924f59f HE |
296 | |
297 | double time_cur, time_last, time_diff; | |
298 | ||
299 | time_last = g_timer_elapsed(mydata->timer, NULL); | |
85b5af06 UH |
300 | |
301 | while (thread_running) { | |
1924f59f HE |
302 | /* Rate control */ |
303 | time_cur = g_timer_elapsed(mydata->timer, NULL); | |
304 | ||
305 | time_diff = time_cur - time_last; | |
306 | time_last = time_cur; | |
307 | ||
308 | nb_to_send = cur_samplerate * time_diff; | |
309 | ||
ba3d481b | 310 | if (limit_samples) |
1924f59f HE |
311 | nb_to_send = MIN(nb_to_send, |
312 | limit_samples - mydata->samples_counter); | |
313 | ||
314 | /* Make sure we don't overflow. */ | |
764f887f DR |
315 | #ifdef DEMO_ANALOG |
316 | nb_to_send = MIN(nb_to_send, BUFSIZE / 3); | |
317 | #else | |
1924f59f | 318 | nb_to_send = MIN(nb_to_send, BUFSIZE); |
764f887f | 319 | #endif |
1924f59f HE |
320 | |
321 | if (nb_to_send) { | |
322 | samples_generator(buf, nb_to_send, data); | |
323 | mydata->samples_counter += nb_to_send; | |
764f887f DR |
324 | #ifdef DEMO_ANALOG |
325 | g_io_channel_write_chars(channels[1], (gchar *) &buf, | |
326 | nb_to_send * 3, (gsize *) &bytes_written, NULL); | |
327 | #else | |
328 | g_io_channel_write_chars(channels[1], (gchar *) &buf, | |
329 | nb_to_send, (gsize *) &bytes_written, NULL); | |
330 | #endif | |
b9cc3629 BV |
331 | } |
332 | ||
1924f59f HE |
333 | /* Check if we're done. */ |
334 | if ((limit_msec && time_cur * 1000 > limit_msec) || | |
335 | (limit_samples && mydata->samples_counter >= limit_samples)) | |
336 | { | |
85b5af06 UH |
337 | close(mydata->pipe_fds[1]); |
338 | thread_running = 0; | |
85b5af06 UH |
339 | } |
340 | ||
1924f59f | 341 | g_usleep(10); |
85b5af06 UH |
342 | } |
343 | } | |
344 | ||
345 | /* Callback handling data */ | |
346 | static int receive_data(int fd, int revents, void *user_data) | |
347 | { | |
26ce0bbf UH |
348 | struct datafeed_packet packet; |
349 | char c[BUFSIZE]; | |
350 | uint64_t z; | |
764f887f DR |
351 | #ifdef DEMO_ANALOG |
352 | struct analog_sample *sample; | |
353 | unsigned int i, x; | |
354 | int sample_size = sizeof(struct analog_sample) + | |
355 | (NUM_PROBES * sizeof(struct analog_probe)); | |
356 | char *buf; | |
357 | #endif | |
1924f59f | 358 | |
26ce0bbf UH |
359 | /* Avoid compiler warnings. */ |
360 | fd = fd; | |
361 | revents = revents; | |
1924f59f HE |
362 | |
363 | do { | |
364 | g_io_channel_read_chars(channels[0], | |
764f887f | 365 | (gchar *) &c, BUFSIZE, (gsize *) &z, NULL); |
1924f59f HE |
366 | |
367 | if (z > 0) { | |
764f887f DR |
368 | #ifdef DEMO_ANALOG |
369 | packet.type = DF_ANALOG; | |
370 | ||
371 | packet.length = (z / 3) * sample_size; | |
372 | packet.unitsize = sample_size; | |
373 | ||
374 | buf = malloc(sample_size * packet.length); | |
375 | if (!buf) | |
376 | return FALSE; | |
377 | ||
378 | /* Craft our packet. */ | |
379 | for (i = 0; i < z / 3; i++) { | |
380 | sample = (struct analog_sample *) (buf + (i * sample_size)); | |
381 | sample->num_probes = NUM_PROBES; | |
382 | ||
383 | /* 8 Logic probes */ | |
384 | for (x = 0; x < NUM_PROBES - 1; x++) { | |
385 | sample->probes[x].val = | |
386 | (c[i * 3] >> x) & 1; | |
387 | sample->probes[x].res = 1; | |
388 | } | |
389 | ||
390 | /* 1 Analog probe, 16 bit adc */ | |
391 | for (; x < NUM_PROBES; x++) { | |
392 | sample->probes[x].val = | |
393 | *(uint16_t *) (c + i * 3 + 1); | |
394 | sample->probes[x].val &= ((1 << 16) - 1); | |
395 | sample->probes[x].res = 16; | |
396 | } | |
397 | ||
398 | } | |
399 | ||
400 | packet.payload = buf; | |
401 | session_bus(user_data, &packet); | |
402 | free(buf); | |
403 | #else | |
1924f59f HE |
404 | packet.type = DF_LOGIC; |
405 | packet.length = z; | |
406 | packet.unitsize = 1; | |
407 | packet.payload = c; | |
408 | session_bus(user_data, &packet); | |
764f887f | 409 | #endif |
1924f59f HE |
410 | } |
411 | } while (z > 0); | |
85b5af06 | 412 | |
1924f59f HE |
413 | if (!thread_running && z <= 0) |
414 | { | |
415 | /* Make sure we don't receive more packets */ | |
416 | g_io_channel_close(channels[0]); | |
d35aaf02 | 417 | |
1924f59f HE |
418 | /* Send last packet. */ |
419 | packet.type = DF_END; | |
85b5af06 | 420 | session_bus(user_data, &packet); |
1924f59f HE |
421 | |
422 | return FALSE; | |
85b5af06 | 423 | } |
1924f59f | 424 | |
85b5af06 UH |
425 | return TRUE; |
426 | } | |
427 | ||
6239c175 UH |
428 | static int hw_start_acquisition(int device_index, gpointer session_device_id) |
429 | { | |
430 | struct datafeed_packet *packet; | |
431 | struct datafeed_header *header; | |
85b5af06 | 432 | struct databag *mydata; |
6239c175 | 433 | |
85b5af06 | 434 | mydata = malloc(sizeof(struct databag)); |
5096c6a6 UH |
435 | if (!mydata) |
436 | return SIGROK_ERR_MALLOC; | |
85b5af06 | 437 | |
e15f48c2 | 438 | mydata->sample_generator = default_genmode; |
85b5af06 UH |
439 | mydata->session_device_id = session_device_id; |
440 | mydata->device_index = device_index; | |
441 | mydata->samples_counter = 0; | |
85b5af06 | 442 | |
e15f48c2 BV |
443 | if (pipe(mydata->pipe_fds)) |
444 | return SIGROK_ERR; | |
85b5af06 | 445 | |
d35aaf02 UH |
446 | channels[0] = g_io_channel_unix_new(mydata->pipe_fds[0]); |
447 | channels[1] = g_io_channel_unix_new(mydata->pipe_fds[1]); | |
448 | ||
449 | /* Set channel encoding to binary (default is UTF-8). */ | |
450 | g_io_channel_set_encoding(channels[0], NULL, NULL); | |
451 | g_io_channel_set_encoding(channels[1], NULL, NULL); | |
452 | ||
453 | /* Make channels to unbuffered. */ | |
454 | g_io_channel_set_buffered(channels[0], FALSE); | |
455 | g_io_channel_set_buffered(channels[1], FALSE); | |
456 | ||
85b5af06 UH |
457 | source_add(mydata->pipe_fds[0], G_IO_IN | G_IO_ERR, 40, receive_data, |
458 | session_device_id); | |
459 | ||
460 | /* Run the demo thread. */ | |
461 | g_thread_init(NULL); | |
1924f59f | 462 | mydata->timer = g_timer_new(); |
85b5af06 UH |
463 | thread_running = 1; |
464 | my_thread = | |
465 | g_thread_create((GThreadFunc)thread_func, mydata, TRUE, NULL); | |
e15f48c2 BV |
466 | if (!my_thread) |
467 | return SIGROK_ERR; | |
6239c175 UH |
468 | |
469 | packet = malloc(sizeof(struct datafeed_packet)); | |
470 | header = malloc(sizeof(struct datafeed_header)); | |
e15f48c2 | 471 | if (!packet || !header) |
6239c175 UH |
472 | return SIGROK_ERR_MALLOC; |
473 | ||
6239c175 UH |
474 | packet->type = DF_HEADER; |
475 | packet->length = sizeof(struct datafeed_header); | |
476 | packet->payload = (unsigned char *)header; | |
764f887f DR |
477 | #ifdef DEMO_ANALOG |
478 | packet->unitsize = sizeof(struct analog_sample) + | |
479 | (NUM_PROBES * sizeof(struct analog_probe)); | |
480 | #endif | |
6239c175 UH |
481 | header->feed_version = 1; |
482 | gettimeofday(&header->starttime, NULL); | |
483 | header->samplerate = cur_samplerate; | |
484 | header->protocol_id = PROTO_RAW; | |
c2616fb9 DR |
485 | header->num_logic_probes = NUM_PROBES; |
486 | header->num_analog_probes = 0; | |
6239c175 UH |
487 | session_bus(session_device_id, packet); |
488 | free(header); | |
489 | free(packet); | |
490 | ||
491 | return SIGROK_OK; | |
492 | } | |
493 | ||
6239c175 UH |
494 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) |
495 | { | |
17e1afcb | 496 | /* Avoid compiler warnings. */ |
6239c175 | 497 | device_index = device_index; |
1924f59f | 498 | session_device_id = session_device_id; |
6239c175 | 499 | |
1924f59f HE |
500 | /* Stop generate thread. */ |
501 | thread_running = 0; | |
6239c175 UH |
502 | } |
503 | ||
504 | struct device_plugin demo_plugin_info = { | |
505 | "demo", | |
506 | 1, | |
507 | hw_init, | |
508 | hw_cleanup, | |
509 | hw_opendev, | |
510 | hw_closedev, | |
511 | hw_get_device_info, | |
512 | hw_get_status, | |
513 | hw_get_capabilities, | |
514 | hw_set_configuration, | |
515 | hw_start_acquisition, | |
516 | hw_stop_acquisition, | |
517 | }; |