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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Håvard Espeland <gus@ping.uio.no>, | |
5 | * Copyright (C) 2010 Martin Stensgård <mastensg@ping.uio.no> | |
6 | * Copyright (C) 2010 Carl Henrik Lunde <chlunde@ping.uio.no> | |
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 3 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, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | /* | |
23 | * ASIX Sigma Logic Analyzer Driver | |
24 | */ | |
25 | ||
26 | #include <ftdi.h> | |
27 | #include <string.h> | |
28 | #include <zlib.h> | |
29 | #include <sigrok.h> | |
30 | #include "asix-sigma.h" | |
31 | ||
32 | #define USB_VENDOR 0xa600 | |
33 | #define USB_PRODUCT 0xa000 | |
34 | #define USB_DESCRIPTION "ASIX SIGMA" | |
35 | #define USB_VENDOR_NAME "ASIX" | |
36 | #define USB_MODEL_NAME "SIGMA" | |
37 | #define USB_MODEL_VERSION "" | |
38 | #define TRIGGER_TYPES "rf10" | |
39 | ||
40 | static GSList *device_instances = NULL; | |
41 | ||
42 | // XXX These should be per device | |
43 | static struct ftdi_context ftdic; | |
44 | static uint64_t cur_samplerate = 0; | |
45 | static uint32_t limit_msec = 0; | |
46 | static struct timeval start_tv; | |
47 | static int cur_firmware = -1; | |
48 | static int num_probes = 0; | |
49 | static int samples_per_event = 0; | |
50 | static int capture_ratio = 50; | |
51 | static struct sigma_trigger trigger; | |
52 | ||
53 | static uint64_t supported_samplerates[] = { | |
54 | KHZ(200), | |
55 | KHZ(250), | |
56 | KHZ(500), | |
57 | MHZ(1), | |
58 | MHZ(5), | |
59 | MHZ(10), | |
60 | MHZ(25), | |
61 | MHZ(50), | |
62 | MHZ(100), | |
63 | MHZ(200), | |
64 | 0, | |
65 | }; | |
66 | ||
67 | static struct samplerates samplerates = { | |
68 | KHZ(200), | |
69 | MHZ(200), | |
70 | 0, | |
71 | supported_samplerates, | |
72 | }; | |
73 | ||
74 | static int capabilities[] = { | |
75 | HWCAP_LOGIC_ANALYZER, | |
76 | HWCAP_SAMPLERATE, | |
77 | HWCAP_CAPTURE_RATIO, | |
78 | HWCAP_PROBECONFIG, | |
79 | ||
80 | HWCAP_LIMIT_MSEC, | |
81 | 0, | |
82 | }; | |
83 | ||
84 | /* Force the FPGA to reboot. */ | |
85 | static uint8_t suicide[] = { | |
86 | 0x84, 0x84, 0x88, 0x84, 0x88, 0x84, 0x88, 0x84, | |
87 | }; | |
88 | ||
89 | /* Prepare to upload firmware (FPGA specific). */ | |
90 | static uint8_t init[] = { | |
91 | 0x03, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | |
92 | }; | |
93 | ||
94 | /* Initialize the logic analyzer mode. */ | |
95 | static uint8_t logic_mode_start[] = { | |
96 | 0x00, 0x40, 0x0f, 0x25, 0x35, 0x40, | |
97 | 0x2a, 0x3a, 0x40, 0x03, 0x20, 0x38, | |
98 | }; | |
99 | ||
100 | static const char *firmware_files[] = { | |
101 | "asix-sigma-50.fw", /* 50 MHz, supports 8 bit fractions */ | |
102 | "asix-sigma-100.fw", /* 100 MHz */ | |
103 | "asix-sigma-200.fw", /* 200 MHz */ | |
104 | "asix-sigma-50sync.fw", /* Synchronous clock from pin */ | |
105 | "asix-sigma-phasor.fw", /* Frequency counter */ | |
106 | }; | |
107 | ||
108 | static int sigma_read(void *buf, size_t size) | |
109 | { | |
110 | int ret; | |
111 | ||
112 | ret = ftdi_read_data(&ftdic, (unsigned char *)buf, size); | |
113 | if (ret < 0) { | |
114 | g_warning("ftdi_read_data failed: %s", | |
115 | ftdi_get_error_string(&ftdic)); | |
116 | } | |
117 | ||
118 | return ret; | |
119 | } | |
120 | ||
121 | static int sigma_write(void *buf, size_t size) | |
122 | { | |
123 | int ret; | |
124 | ||
125 | ret = ftdi_write_data(&ftdic, (unsigned char *)buf, size); | |
126 | if (ret < 0) { | |
127 | g_warning("ftdi_write_data failed: %s", | |
128 | ftdi_get_error_string(&ftdic)); | |
129 | } else if ((size_t) ret != size) { | |
130 | g_warning("ftdi_write_data did not complete write\n"); | |
131 | } | |
132 | ||
133 | return ret; | |
134 | } | |
135 | ||
136 | static int sigma_write_register(uint8_t reg, uint8_t *data, size_t len) | |
137 | { | |
138 | size_t i; | |
139 | uint8_t buf[len + 2]; | |
140 | int idx = 0; | |
141 | ||
142 | buf[idx++] = REG_ADDR_LOW | (reg & 0xf); | |
143 | buf[idx++] = REG_ADDR_HIGH | (reg >> 4); | |
144 | ||
145 | for (i = 0; i < len; ++i) { | |
146 | buf[idx++] = REG_DATA_LOW | (data[i] & 0xf); | |
147 | buf[idx++] = REG_DATA_HIGH_WRITE | (data[i] >> 4); | |
148 | } | |
149 | ||
150 | return sigma_write(buf, idx); | |
151 | } | |
152 | ||
153 | static int sigma_set_register(uint8_t reg, uint8_t value) | |
154 | { | |
155 | return sigma_write_register(reg, &value, 1); | |
156 | } | |
157 | ||
158 | static int sigma_read_register(uint8_t reg, uint8_t *data, size_t len) | |
159 | { | |
160 | uint8_t buf[3]; | |
161 | ||
162 | buf[0] = REG_ADDR_LOW | (reg & 0xf); | |
163 | buf[1] = REG_ADDR_HIGH | (reg >> 4); | |
164 | buf[2] = REG_READ_ADDR; | |
165 | ||
166 | sigma_write(buf, sizeof(buf)); | |
167 | ||
168 | return sigma_read(data, len); | |
169 | } | |
170 | ||
171 | static uint8_t sigma_get_register(uint8_t reg) | |
172 | { | |
173 | uint8_t value; | |
174 | ||
175 | if (1 != sigma_read_register(reg, &value, 1)) { | |
176 | g_warning("Sigma_get_register: 1 byte expected"); | |
177 | return 0; | |
178 | } | |
179 | ||
180 | return value; | |
181 | } | |
182 | ||
183 | static int sigma_read_pos(uint32_t *stoppos, uint32_t *triggerpos) | |
184 | { | |
185 | uint8_t buf[] = { | |
186 | REG_ADDR_LOW | READ_TRIGGER_POS_LOW, | |
187 | ||
188 | REG_READ_ADDR | NEXT_REG, | |
189 | REG_READ_ADDR | NEXT_REG, | |
190 | REG_READ_ADDR | NEXT_REG, | |
191 | REG_READ_ADDR | NEXT_REG, | |
192 | REG_READ_ADDR | NEXT_REG, | |
193 | REG_READ_ADDR | NEXT_REG, | |
194 | }; | |
195 | uint8_t result[6]; | |
196 | ||
197 | sigma_write(buf, sizeof(buf)); | |
198 | ||
199 | sigma_read(result, sizeof(result)); | |
200 | ||
201 | *triggerpos = result[0] | (result[1] << 8) | (result[2] << 16); | |
202 | *stoppos = result[3] | (result[4] << 8) | (result[5] << 16); | |
203 | ||
204 | /* Not really sure why this must be done, but according to spec. */ | |
205 | if ((--*stoppos & 0x1ff) == 0x1ff) | |
206 | stoppos -= 64; | |
207 | ||
208 | if ((*--triggerpos & 0x1ff) == 0x1ff) | |
209 | triggerpos -= 64; | |
210 | ||
211 | return 1; | |
212 | } | |
213 | ||
214 | static int sigma_read_dram(uint16_t startchunk, size_t numchunks, uint8_t *data) | |
215 | { | |
216 | size_t i; | |
217 | uint8_t buf[4096]; | |
218 | int idx = 0; | |
219 | ||
220 | /* Send the startchunk. Index start with 1. */ | |
221 | buf[0] = startchunk >> 8; | |
222 | buf[1] = startchunk & 0xff; | |
223 | sigma_write_register(WRITE_MEMROW, buf, 2); | |
224 | ||
225 | /* Read the DRAM. */ | |
226 | buf[idx++] = REG_DRAM_BLOCK; | |
227 | buf[idx++] = REG_DRAM_WAIT_ACK; | |
228 | ||
229 | for (i = 0; i < numchunks; ++i) { | |
230 | /* Alternate bit to copy from DRAM to cache. */ | |
231 | if (i != (numchunks - 1)) | |
232 | buf[idx++] = REG_DRAM_BLOCK | (((i + 1) % 2) << 4); | |
233 | ||
234 | buf[idx++] = REG_DRAM_BLOCK_DATA | ((i % 2) << 4); | |
235 | ||
236 | if (i != (numchunks - 1)) | |
237 | buf[idx++] = REG_DRAM_WAIT_ACK; | |
238 | } | |
239 | ||
240 | sigma_write(buf, idx); | |
241 | ||
242 | return sigma_read(data, numchunks * CHUNK_SIZE); | |
243 | } | |
244 | ||
245 | /* Upload trigger look-up tables to Sigma. */ | |
246 | static int sigma_write_trigger_lut(struct triggerlut *lut) | |
247 | { | |
248 | int i; | |
249 | uint8_t tmp[2]; | |
250 | uint16_t bit; | |
251 | ||
252 | /* Transpose the table and send to Sigma. */ | |
253 | for (i = 0; i < 16; ++i) { | |
254 | bit = 1 << i; | |
255 | ||
256 | tmp[0] = tmp[1] = 0; | |
257 | ||
258 | if (lut->m2d[0] & bit) | |
259 | tmp[0] |= 0x01; | |
260 | if (lut->m2d[1] & bit) | |
261 | tmp[0] |= 0x02; | |
262 | if (lut->m2d[2] & bit) | |
263 | tmp[0] |= 0x04; | |
264 | if (lut->m2d[3] & bit) | |
265 | tmp[0] |= 0x08; | |
266 | ||
267 | if (lut->m3 & bit) | |
268 | tmp[0] |= 0x10; | |
269 | if (lut->m3s & bit) | |
270 | tmp[0] |= 0x20; | |
271 | if (lut->m4 & bit) | |
272 | tmp[0] |= 0x40; | |
273 | ||
274 | if (lut->m0d[0] & bit) | |
275 | tmp[1] |= 0x01; | |
276 | if (lut->m0d[1] & bit) | |
277 | tmp[1] |= 0x02; | |
278 | if (lut->m0d[2] & bit) | |
279 | tmp[1] |= 0x04; | |
280 | if (lut->m0d[3] & bit) | |
281 | tmp[1] |= 0x08; | |
282 | ||
283 | if (lut->m1d[0] & bit) | |
284 | tmp[1] |= 0x10; | |
285 | if (lut->m1d[1] & bit) | |
286 | tmp[1] |= 0x20; | |
287 | if (lut->m1d[2] & bit) | |
288 | tmp[1] |= 0x40; | |
289 | if (lut->m1d[3] & bit) | |
290 | tmp[1] |= 0x80; | |
291 | ||
292 | sigma_write_register(WRITE_TRIGGER_SELECT0, tmp, sizeof(tmp)); | |
293 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x30 | i); | |
294 | } | |
295 | ||
296 | /* Send the parameters */ | |
297 | sigma_write_register(WRITE_TRIGGER_SELECT0, (uint8_t *) &lut->params, | |
298 | sizeof(lut->params)); | |
299 | ||
300 | return SIGROK_OK; | |
301 | } | |
302 | ||
303 | /* Generate the bitbang stream for programming the FPGA. */ | |
304 | static int bin2bitbang(const char *filename, | |
305 | unsigned char **buf, size_t *buf_size) | |
306 | { | |
307 | FILE *f; | |
308 | long file_size; | |
309 | unsigned long offset = 0; | |
310 | unsigned char *p; | |
311 | uint8_t *compressed_buf, *firmware; | |
312 | uLongf csize, fwsize; | |
313 | const int buffer_size = 65536; | |
314 | size_t i; | |
315 | int c, ret, bit, v; | |
316 | uint32_t imm = 0x3f6df2ab; | |
317 | ||
318 | f = fopen(filename, "r"); | |
319 | if (!f) { | |
320 | g_warning("fopen(\"%s\", \"r\")", filename); | |
321 | return -1; | |
322 | } | |
323 | ||
324 | if (-1 == fseek(f, 0, SEEK_END)) { | |
325 | g_warning("fseek on %s failed", filename); | |
326 | fclose(f); | |
327 | return -1; | |
328 | } | |
329 | ||
330 | file_size = ftell(f); | |
331 | ||
332 | fseek(f, 0, SEEK_SET); | |
333 | ||
334 | compressed_buf = g_malloc(file_size); | |
335 | firmware = g_malloc(buffer_size); | |
336 | ||
337 | if (!compressed_buf || !firmware) { | |
338 | g_warning("Error allocating buffers"); | |
339 | return -1; | |
340 | } | |
341 | ||
342 | csize = 0; | |
343 | while ((c = getc(f)) != EOF) { | |
344 | imm = (imm + 0xa853753) % 177 + (imm * 0x8034052); | |
345 | compressed_buf[csize++] = c ^ imm; | |
346 | } | |
347 | fclose(f); | |
348 | ||
349 | fwsize = buffer_size; | |
350 | ret = uncompress(firmware, &fwsize, compressed_buf, csize); | |
351 | if (ret < 0) { | |
352 | g_free(compressed_buf); | |
353 | g_free(firmware); | |
354 | g_warning("Could not unpack Sigma firmware. (Error %d)\n", ret); | |
355 | return -1; | |
356 | } | |
357 | ||
358 | g_free(compressed_buf); | |
359 | ||
360 | *buf_size = fwsize * 2 * 8; | |
361 | ||
362 | *buf = p = (unsigned char *)g_malloc(*buf_size); | |
363 | ||
364 | if (!p) { | |
365 | g_warning("Error allocating buffers"); | |
366 | return -1; | |
367 | } | |
368 | ||
369 | for (i = 0; i < fwsize; ++i) { | |
370 | for (bit = 7; bit >= 0; --bit) { | |
371 | v = firmware[i] & 1 << bit ? 0x40 : 0x00; | |
372 | p[offset++] = v | 0x01; | |
373 | p[offset++] = v; | |
374 | } | |
375 | } | |
376 | ||
377 | g_free(firmware); | |
378 | ||
379 | if (offset != *buf_size) { | |
380 | g_free(*buf); | |
381 | g_warning("Error reading firmware %s " | |
382 | "offset=%ld, file_size=%ld, buf_size=%zd\n", | |
383 | filename, offset, file_size, *buf_size); | |
384 | ||
385 | return -1; | |
386 | } | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | static int hw_init(char *deviceinfo) | |
392 | { | |
393 | struct sigrok_device_instance *sdi; | |
394 | ||
395 | deviceinfo = deviceinfo; | |
396 | ||
397 | ftdi_init(&ftdic); | |
398 | ||
399 | /* Look for SIGMAs. */ | |
400 | if (ftdi_usb_open_desc(&ftdic, USB_VENDOR, USB_PRODUCT, | |
401 | USB_DESCRIPTION, NULL) < 0) | |
402 | return 0; | |
403 | ||
404 | /* Register SIGMA device. */ | |
405 | sdi = sigrok_device_instance_new(0, ST_INITIALIZING, | |
406 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
407 | if (!sdi) | |
408 | return 0; | |
409 | ||
410 | device_instances = g_slist_append(device_instances, sdi); | |
411 | ||
412 | /* We will open the device again when we need it. */ | |
413 | ftdi_usb_close(&ftdic); | |
414 | ||
415 | return 1; | |
416 | } | |
417 | ||
418 | static int upload_firmware(int firmware_idx) | |
419 | { | |
420 | int ret; | |
421 | unsigned char *buf; | |
422 | unsigned char pins; | |
423 | size_t buf_size; | |
424 | unsigned char result[32]; | |
425 | char firmware_path[128]; | |
426 | ||
427 | /* Make sure it's an ASIX SIGMA. */ | |
428 | if ((ret = ftdi_usb_open_desc(&ftdic, | |
429 | USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) { | |
430 | g_warning("ftdi_usb_open failed: %s", | |
431 | ftdi_get_error_string(&ftdic)); | |
432 | return 0; | |
433 | } | |
434 | ||
435 | if ((ret = ftdi_set_bitmode(&ftdic, 0xdf, BITMODE_BITBANG)) < 0) { | |
436 | g_warning("ftdi_set_bitmode failed: %s", | |
437 | ftdi_get_error_string(&ftdic)); | |
438 | return 0; | |
439 | } | |
440 | ||
441 | /* Four times the speed of sigmalogan - Works well. */ | |
442 | if ((ret = ftdi_set_baudrate(&ftdic, 750000)) < 0) { | |
443 | g_warning("ftdi_set_baudrate failed: %s", | |
444 | ftdi_get_error_string(&ftdic)); | |
445 | return 0; | |
446 | } | |
447 | ||
448 | /* Force the FPGA to reboot. */ | |
449 | sigma_write(suicide, sizeof(suicide)); | |
450 | sigma_write(suicide, sizeof(suicide)); | |
451 | sigma_write(suicide, sizeof(suicide)); | |
452 | sigma_write(suicide, sizeof(suicide)); | |
453 | ||
454 | /* Prepare to upload firmware (FPGA specific). */ | |
455 | sigma_write(init, sizeof(init)); | |
456 | ||
457 | ftdi_usb_purge_buffers(&ftdic); | |
458 | ||
459 | /* Wait until the FPGA asserts INIT_B. */ | |
460 | while (1) { | |
461 | ret = sigma_read(result, 1); | |
462 | if (result[0] & 0x20) | |
463 | break; | |
464 | } | |
465 | ||
466 | /* Prepare firmware. */ | |
467 | snprintf(firmware_path, sizeof(firmware_path), "%s/%s", FIRMWARE_DIR, | |
468 | firmware_files[firmware_idx]); | |
469 | ||
470 | if (-1 == bin2bitbang(firmware_path, &buf, &buf_size)) { | |
471 | g_warning("An error occured while reading the firmware: %s", | |
472 | firmware_path); | |
473 | return SIGROK_ERR; | |
474 | } | |
475 | ||
476 | /* Upload firmare. */ | |
477 | sigma_write(buf, buf_size); | |
478 | ||
479 | g_free(buf); | |
480 | ||
481 | if ((ret = ftdi_set_bitmode(&ftdic, 0x00, BITMODE_RESET)) < 0) { | |
482 | g_warning("ftdi_set_bitmode failed: %s", | |
483 | ftdi_get_error_string(&ftdic)); | |
484 | return SIGROK_ERR; | |
485 | } | |
486 | ||
487 | ftdi_usb_purge_buffers(&ftdic); | |
488 | ||
489 | /* Discard garbage. */ | |
490 | while (1 == sigma_read(&pins, 1)) | |
491 | ; | |
492 | ||
493 | /* Initialize the logic analyzer mode. */ | |
494 | sigma_write(logic_mode_start, sizeof(logic_mode_start)); | |
495 | ||
496 | /* Expect a 3 byte reply. */ | |
497 | ret = sigma_read(result, 3); | |
498 | if (ret != 3 || | |
499 | result[0] != 0xa6 || result[1] != 0x55 || result[2] != 0xaa) { | |
500 | g_warning("Configuration failed. Invalid reply received."); | |
501 | return SIGROK_ERR; | |
502 | } | |
503 | ||
504 | cur_firmware = firmware_idx; | |
505 | ||
506 | return SIGROK_OK; | |
507 | } | |
508 | ||
509 | static int hw_opendev(int device_index) | |
510 | { | |
511 | struct sigrok_device_instance *sdi; | |
512 | int ret; | |
513 | ||
514 | /* Make sure it's an ASIX SIGMA. */ | |
515 | if ((ret = ftdi_usb_open_desc(&ftdic, | |
516 | USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) { | |
517 | ||
518 | g_warning("ftdi_usb_open failed: %s", | |
519 | ftdi_get_error_string(&ftdic)); | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
524 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) | |
525 | return SIGROK_ERR; | |
526 | ||
527 | sdi->status = ST_ACTIVE; | |
528 | ||
529 | return SIGROK_OK; | |
530 | } | |
531 | ||
532 | static int set_samplerate(struct sigrok_device_instance *sdi, uint64_t samplerate) | |
533 | { | |
534 | int i, ret; | |
535 | ||
536 | sdi = sdi; | |
537 | ||
538 | for (i = 0; supported_samplerates[i]; i++) { | |
539 | if (supported_samplerates[i] == samplerate) | |
540 | break; | |
541 | } | |
542 | if (supported_samplerates[i] == 0) | |
543 | return SIGROK_ERR_SAMPLERATE; | |
544 | ||
545 | if (samplerate <= MHZ(50)) { | |
546 | ret = upload_firmware(0); | |
547 | num_probes = 16; | |
548 | } | |
549 | if (samplerate == MHZ(100)) { | |
550 | ret = upload_firmware(1); | |
551 | num_probes = 8; | |
552 | } | |
553 | else if (samplerate == MHZ(200)) { | |
554 | ret = upload_firmware(2); | |
555 | num_probes = 4; | |
556 | } | |
557 | ||
558 | cur_samplerate = samplerate; | |
559 | samples_per_event = 16 / num_probes; | |
560 | ||
561 | g_message("Firmware uploaded"); | |
562 | ||
563 | return ret; | |
564 | } | |
565 | ||
566 | /* | |
567 | * In 100 and 200 MHz mode, only a single pin rising/falling can be | |
568 | * set as trigger. In other modes, two rising/falling triggers can be set, | |
569 | * in addition to value/mask trigger for any number of probes. | |
570 | * | |
571 | * The Sigma supports complex triggers using boolean expressions, but this | |
572 | * has not been implemented yet. | |
573 | */ | |
574 | static int configure_probes(GSList *probes) | |
575 | { | |
576 | struct probe *probe; | |
577 | GSList *l; | |
578 | int trigger_set = 0; | |
579 | int probebit; | |
580 | ||
581 | memset(&trigger, 0, sizeof(struct sigma_trigger)); | |
582 | ||
583 | for (l = probes; l; l = l->next) { | |
584 | probe = (struct probe *)l->data; | |
585 | probebit = 1 << (probe->index - 1); | |
586 | ||
587 | if (!probe->enabled || !probe->trigger) | |
588 | continue; | |
589 | ||
590 | if (cur_samplerate >= MHZ(100)) { | |
591 | /* Fast trigger support. */ | |
592 | if (trigger_set) { | |
593 | g_warning("Asix Sigma only supports a single pin trigger " | |
594 | "in 100 and 200 MHz mode."); | |
595 | return SIGROK_ERR; | |
596 | } | |
597 | if (probe->trigger[0] == 'f') | |
598 | trigger.fallingmask |= probebit; | |
599 | else if (probe->trigger[0] == 'r') | |
600 | trigger.risingmask |= probebit; | |
601 | else { | |
602 | g_warning("Asix Sigma only supports " | |
603 | "rising/falling trigger in 100 " | |
604 | "and 200 MHz mode."); | |
605 | return SIGROK_ERR; | |
606 | } | |
607 | ||
608 | ++trigger_set; | |
609 | } else { | |
610 | /* Simple trigger support (event). */ | |
611 | if (probe->trigger[0] == '1') { | |
612 | trigger.simplevalue |= probebit; | |
613 | trigger.simplemask |= probebit; | |
614 | } | |
615 | else if (probe->trigger[0] == '0') { | |
616 | trigger.simplevalue &= ~probebit; | |
617 | trigger.simplemask |= probebit; | |
618 | } | |
619 | else if (probe->trigger[0] == 'f') { | |
620 | trigger.fallingmask |= probebit; | |
621 | ++trigger_set; | |
622 | } | |
623 | else if (probe->trigger[0] == 'r') { | |
624 | trigger.risingmask |= probebit; | |
625 | ++trigger_set; | |
626 | } | |
627 | ||
628 | if (trigger_set > 2) { | |
629 | g_warning("Asix Sigma only supports 2 rising/" | |
630 | "falling triggers."); | |
631 | return SIGROK_ERR; | |
632 | } | |
633 | } | |
634 | } | |
635 | ||
636 | return SIGROK_OK; | |
637 | } | |
638 | ||
639 | static void hw_closedev(int device_index) | |
640 | { | |
641 | device_index = device_index; | |
642 | ||
643 | ftdi_usb_close(&ftdic); | |
644 | } | |
645 | ||
646 | static void hw_cleanup(void) | |
647 | { | |
648 | } | |
649 | ||
650 | static void *hw_get_device_info(int device_index, int device_info_id) | |
651 | { | |
652 | struct sigrok_device_instance *sdi; | |
653 | void *info = NULL; | |
654 | ||
655 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) { | |
656 | fprintf(stderr, "It's NULL.\n"); | |
657 | return NULL; | |
658 | } | |
659 | ||
660 | switch (device_info_id) { | |
661 | case DI_INSTANCE: | |
662 | info = sdi; | |
663 | break; | |
664 | case DI_NUM_PROBES: | |
665 | info = GINT_TO_POINTER(16); | |
666 | break; | |
667 | case DI_SAMPLERATES: | |
668 | info = &samplerates; | |
669 | break; | |
670 | case DI_TRIGGER_TYPES: | |
671 | info = (char *)TRIGGER_TYPES; | |
672 | break; | |
673 | case DI_CUR_SAMPLERATE: | |
674 | info = &cur_samplerate; | |
675 | break; | |
676 | } | |
677 | ||
678 | return info; | |
679 | } | |
680 | ||
681 | static int hw_get_status(int device_index) | |
682 | { | |
683 | struct sigrok_device_instance *sdi; | |
684 | ||
685 | sdi = get_sigrok_device_instance(device_instances, device_index); | |
686 | if (sdi) | |
687 | return sdi->status; | |
688 | else | |
689 | return ST_NOT_FOUND; | |
690 | } | |
691 | ||
692 | static int *hw_get_capabilities(void) | |
693 | { | |
694 | return capabilities; | |
695 | } | |
696 | ||
697 | static int hw_set_configuration(int device_index, int capability, void *value) | |
698 | { | |
699 | struct sigrok_device_instance *sdi; | |
700 | int ret; | |
701 | ||
702 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) | |
703 | return SIGROK_ERR; | |
704 | ||
705 | if (capability == HWCAP_SAMPLERATE) { | |
706 | ret = set_samplerate(sdi, *(uint64_t*) value); | |
707 | } else if (capability == HWCAP_PROBECONFIG) { | |
708 | ret = configure_probes(value); | |
709 | } else if (capability == HWCAP_LIMIT_MSEC) { | |
710 | limit_msec = strtoull(value, NULL, 10); | |
711 | ret = SIGROK_OK; | |
712 | } else if (capability == HWCAP_CAPTURE_RATIO) { | |
713 | capture_ratio = strtoull(value, NULL, 10); | |
714 | ret = SIGROK_OK; | |
715 | } else if (capability == HWCAP_PROBECONFIG) { | |
716 | ret = configure_probes((GSList *) value); | |
717 | } else { | |
718 | ret = SIGROK_ERR; | |
719 | } | |
720 | ||
721 | return ret; | |
722 | } | |
723 | ||
724 | /* | |
725 | * Decode chunk of 1024 bytes, 64 clusters, 7 events per cluster. | |
726 | * Each event is 20ns apart, and can contain multiple samples. | |
727 | * | |
728 | * For 200 MHz, events contain 4 samples for each channel, spread 5 ns apart. | |
729 | * For 100 MHz, events contain 2 samples for each channel, spread 10 ns apart. | |
730 | * For 50 MHz and below, events contain one sample for each channel, | |
731 | * spread 20 ns apart. | |
732 | */ | |
733 | static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts, | |
734 | uint16_t *lastsample, int triggerpos, void *user_data) | |
735 | { | |
736 | uint16_t tsdiff, ts; | |
737 | uint16_t samples[65536 * samples_per_event]; | |
738 | struct datafeed_packet packet; | |
739 | int i, j, k, l, numpad, tosend; | |
740 | size_t n = 0, sent = 0; | |
741 | int clustersize = EVENTS_PER_CLUSTER * samples_per_event; | |
742 | uint16_t *event; | |
743 | uint16_t cur_sample; | |
744 | int triggerts = -1; | |
745 | int triggeroff = 0; | |
746 | ||
747 | /* Check if trigger is in this chunk. */ | |
748 | if (triggerpos != -1) { | |
749 | if (cur_samplerate <= MHZ(50)) | |
750 | triggerpos -= EVENTS_PER_CLUSTER; | |
751 | else | |
752 | triggeroff = 3; | |
753 | ||
754 | if (triggerpos < 0) | |
755 | triggerpos = 0; | |
756 | ||
757 | /* Find in which cluster the trigger occured. */ | |
758 | triggerts = triggerpos / 7; | |
759 | } | |
760 | ||
761 | /* For each ts. */ | |
762 | for (i = 0; i < 64; ++i) { | |
763 | ts = *(uint16_t *) &buf[i * 16]; | |
764 | tsdiff = ts - *lastts; | |
765 | *lastts = ts; | |
766 | ||
767 | /* Pad last sample up to current point. */ | |
768 | numpad = tsdiff * samples_per_event - clustersize; | |
769 | if (numpad > 0) { | |
770 | for (j = 0; j < numpad; ++j) | |
771 | samples[j] = *lastsample; | |
772 | ||
773 | n = numpad; | |
774 | } | |
775 | ||
776 | /* Send samples between previous and this timestamp to sigrok. */ | |
777 | sent = 0; | |
778 | while (sent < n) { | |
779 | tosend = MIN(2048, n - sent); | |
780 | ||
781 | packet.type = DF_LOGIC16; | |
782 | packet.length = tosend * sizeof(uint16_t); | |
783 | packet.payload = samples + sent; | |
784 | session_bus(user_data, &packet); | |
785 | ||
786 | sent += tosend; | |
787 | } | |
788 | n = 0; | |
789 | ||
790 | event = (uint16_t *) &buf[i * 16 + 2]; | |
791 | cur_sample = 0; | |
792 | ||
793 | /* For each event in cluster. */ | |
794 | for (j = 0; j < 7; ++j) { | |
795 | ||
796 | /* For each sample in event. */ | |
797 | for (k = 0; k < samples_per_event; ++k) { | |
798 | cur_sample = 0; | |
799 | ||
800 | /* For each probe. */ | |
801 | for (l = 0; l < num_probes; ++l) | |
802 | cur_sample |= (!!(event[j] & (1 << (l * | |
803 | samples_per_event + k)))) | |
804 | << l; | |
805 | ||
806 | samples[n++] = cur_sample; | |
807 | } | |
808 | } | |
809 | ||
810 | /* Send data up to trigger point (if triggered). */ | |
811 | sent = 0; | |
812 | if (i == triggerts) { | |
813 | /* | |
814 | * Trigger is presumptively not accurate to sample. | |
815 | * However, it always trigger before the actual event, | |
816 | * so it would be possible to forward to correct position | |
817 | * here by manually checking for trigger condition. | |
818 | */ | |
819 | ||
820 | tosend = (triggerpos % 7) - triggeroff; | |
821 | ||
822 | if (tosend > 0) { | |
823 | packet.type = DF_LOGIC16; | |
824 | packet.length = tosend * sizeof(uint16_t); | |
825 | packet.payload = samples; | |
826 | session_bus(user_data, &packet); | |
827 | ||
828 | sent += tosend; | |
829 | } | |
830 | ||
831 | packet.type = DF_TRIGGER; | |
832 | packet.length = 0; | |
833 | packet.payload = 0; | |
834 | session_bus(user_data, &packet); | |
835 | } | |
836 | ||
837 | /* Send rest of the chunk to sigrok. */ | |
838 | tosend = n - sent; | |
839 | ||
840 | packet.type = DF_LOGIC16; | |
841 | packet.length = tosend * sizeof(uint16_t); | |
842 | packet.payload = samples + sent; | |
843 | session_bus(user_data, &packet); | |
844 | ||
845 | *lastsample = samples[n - 1]; | |
846 | } | |
847 | ||
848 | return SIGROK_OK; | |
849 | } | |
850 | ||
851 | static int receive_data(int fd, int revents, void *user_data) | |
852 | { | |
853 | struct datafeed_packet packet; | |
854 | const int chunks_per_read = 32; | |
855 | unsigned char buf[chunks_per_read * CHUNK_SIZE]; | |
856 | int bufsz, numchunks, curchunk, i, newchunks; | |
857 | uint32_t triggerpos, stoppos, running_msec; | |
858 | struct timeval tv; | |
859 | uint16_t lastts = 0; | |
860 | uint16_t lastsample = 0; | |
861 | uint8_t modestatus; | |
862 | int triggerchunk = -1; | |
863 | ||
864 | fd = fd; | |
865 | revents = revents; | |
866 | ||
867 | /* Get the current position. */ | |
868 | sigma_read_pos(&stoppos, &triggerpos); | |
869 | numchunks = stoppos / 512; | |
870 | ||
871 | /* Check if the has expired, or memory is full. */ | |
872 | gettimeofday(&tv, 0); | |
873 | running_msec = (tv.tv_sec - start_tv.tv_sec) * 1000 + | |
874 | (tv.tv_usec - start_tv.tv_usec) / 1000; | |
875 | ||
876 | if (running_msec < limit_msec && numchunks < 32767) | |
877 | return FALSE; | |
878 | ||
879 | /* Stop acqusition. */ | |
880 | sigma_set_register(WRITE_MODE, 0x11); | |
881 | ||
882 | /* Set SDRAM Read Enable. */ | |
883 | sigma_set_register(WRITE_MODE, 0x02); | |
884 | ||
885 | /* Get the current position. */ | |
886 | sigma_read_pos(&stoppos, &triggerpos); | |
887 | ||
888 | /* Check if trigger has fired. */ | |
889 | modestatus = sigma_get_register(READ_MODE); | |
890 | if (modestatus & 0x20) { | |
891 | triggerchunk = triggerpos / 512; | |
892 | } | |
893 | ||
894 | /* Download sample data. */ | |
895 | for (curchunk = 0; curchunk < numchunks;) { | |
896 | newchunks = MIN(chunks_per_read, numchunks - curchunk); | |
897 | ||
898 | g_message("Downloading sample data: %.0f %%", | |
899 | 100.0 * curchunk / numchunks); | |
900 | ||
901 | bufsz = sigma_read_dram(curchunk, newchunks, buf); | |
902 | ||
903 | /* Find first ts. */ | |
904 | if (curchunk == 0) | |
905 | lastts = *(uint16_t *) buf - 1; | |
906 | ||
907 | /* Decode chunks and send them to sigrok. */ | |
908 | for (i = 0; i < newchunks; ++i) { | |
909 | if (curchunk + i == triggerchunk) | |
910 | decode_chunk_ts(buf + (i * CHUNK_SIZE), | |
911 | &lastts, &lastsample, | |
912 | triggerpos & 0x1ff, user_data); | |
913 | else | |
914 | decode_chunk_ts(buf + (i * CHUNK_SIZE), | |
915 | &lastts, &lastsample, | |
916 | -1, user_data); | |
917 | } | |
918 | ||
919 | curchunk += newchunks; | |
920 | } | |
921 | ||
922 | /* End of data. */ | |
923 | packet.type = DF_END; | |
924 | packet.length = 0; | |
925 | session_bus(user_data, &packet); | |
926 | ||
927 | return TRUE; | |
928 | } | |
929 | ||
930 | /* Build a LUT entry used by the trigger functions. */ | |
931 | static void build_lut_entry(uint16_t value, uint16_t mask, uint16_t *entry) | |
932 | { | |
933 | int i, j, k, bit; | |
934 | ||
935 | /* For each quad probe. */ | |
936 | for (i = 0; i < 4; ++i) { | |
937 | entry[i] = 0xffff; | |
938 | ||
939 | /* For each bit in LUT. */ | |
940 | for (j = 0; j < 16; ++j) | |
941 | ||
942 | /* For each probe in quad. */ | |
943 | for (k = 0; k < 4; ++k) { | |
944 | bit = 1 << (i * 4 + k); | |
945 | ||
946 | /* Set bit in entry */ | |
947 | if ((mask & bit) && | |
948 | ((!(value & bit)) != | |
949 | (!(j & (1 << k))))) | |
950 | entry[i] &= ~(1 << j); | |
951 | } | |
952 | } | |
953 | } | |
954 | ||
955 | /* Add a logical function to LUT mask. */ | |
956 | static void add_trigger_function(enum triggerop oper, enum triggerfunc func, | |
957 | int index, int neg, uint16_t *mask) | |
958 | { | |
959 | int i, j; | |
960 | int x[2][2], tmp, a, b, aset, bset, rset; | |
961 | ||
962 | memset(x, 0, 4 * sizeof(int)); | |
963 | ||
964 | /* Trigger detect condition. */ | |
965 | switch (oper) { | |
966 | case OP_LEVEL: | |
967 | x[0][1] = 1; | |
968 | x[1][1] = 1; | |
969 | break; | |
970 | case OP_NOT: | |
971 | x[0][0] = 1; | |
972 | x[1][0] = 1; | |
973 | break; | |
974 | case OP_RISE: | |
975 | x[0][1] = 1; | |
976 | break; | |
977 | case OP_FALL: | |
978 | x[1][0] = 1; | |
979 | break; | |
980 | case OP_RISEFALL: | |
981 | x[0][1] = 1; | |
982 | x[1][0] = 1; | |
983 | break; | |
984 | case OP_NOTRISE: | |
985 | x[1][1] = 1; | |
986 | x[0][0] = 1; | |
987 | x[1][0] = 1; | |
988 | break; | |
989 | case OP_NOTFALL: | |
990 | x[1][1] = 1; | |
991 | x[0][0] = 1; | |
992 | x[0][1] = 1; | |
993 | break; | |
994 | case OP_NOTRISEFALL: | |
995 | x[1][1] = 1; | |
996 | x[0][0] = 1; | |
997 | break; | |
998 | } | |
999 | ||
1000 | /* Transpose if neg is set. */ | |
1001 | if (neg) { | |
1002 | for (i = 0; i < 2; ++i) | |
1003 | for (j = 0; j < 2; ++j) { | |
1004 | tmp = x[i][j]; | |
1005 | x[i][j] = x[1-i][1-j]; | |
1006 | x[1-i][1-j] = tmp; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | /* Update mask with function. */ | |
1011 | for (i = 0; i < 16; ++i) { | |
1012 | a = (i >> (2 * index + 0)) & 1; | |
1013 | b = (i >> (2 * index + 1)) & 1; | |
1014 | ||
1015 | aset = (*mask >> i) & 1; | |
1016 | bset = x[b][a]; | |
1017 | ||
1018 | if (func == FUNC_AND || func == FUNC_NAND) | |
1019 | rset = aset & bset; | |
1020 | else if (func == FUNC_OR || func == FUNC_NOR) | |
1021 | rset = aset | bset; | |
1022 | else if (func == FUNC_XOR || func == FUNC_NXOR) | |
1023 | rset = aset ^ bset; | |
1024 | ||
1025 | if (func == FUNC_NAND || func == FUNC_NOR || func == FUNC_NXOR) | |
1026 | rset = !rset; | |
1027 | ||
1028 | *mask &= ~(1 << i); | |
1029 | ||
1030 | if (rset) | |
1031 | *mask |= 1 << i; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | /* | |
1036 | * Build trigger LUTs used by 50 MHz and lower sample rates for supporting | |
1037 | * simple pin change and state triggers. Only two transitions (rise/fall) can be | |
1038 | * set at any time, but a full mask and value can be set (0/1). | |
1039 | */ | |
1040 | static int build_basic_trigger(struct triggerlut *lut) | |
1041 | { | |
1042 | int i,j; | |
1043 | uint16_t masks[2] = { 0, 0 }; | |
1044 | ||
1045 | memset(lut, 0, sizeof(struct triggerlut)); | |
1046 | ||
1047 | /* Contant for simple triggers. */ | |
1048 | lut->m4 = 0xa000; | |
1049 | ||
1050 | /* Value/mask trigger support. */ | |
1051 | build_lut_entry(trigger.simplevalue, trigger.simplemask, lut->m2d); | |
1052 | ||
1053 | /* Rise/fall trigger support. */ | |
1054 | for (i = 0, j = 0; i < 16; ++i) { | |
1055 | if (trigger.risingmask & (1 << i) || | |
1056 | trigger.fallingmask & (1 << i)) | |
1057 | masks[j++] = 1 << i; | |
1058 | } | |
1059 | ||
1060 | build_lut_entry(masks[0], masks[0], lut->m0d); | |
1061 | build_lut_entry(masks[1], masks[1], lut->m1d); | |
1062 | ||
1063 | /* Add glue logic */ | |
1064 | if (masks[0] || masks[1]) { | |
1065 | /* Transition trigger. */ | |
1066 | if (masks[0] & trigger.risingmask) | |
1067 | add_trigger_function(OP_RISE, FUNC_OR, 0, 0, &lut->m3); | |
1068 | if (masks[0] & trigger.fallingmask) | |
1069 | add_trigger_function(OP_FALL, FUNC_OR, 0, 0, &lut->m3); | |
1070 | if (masks[1] & trigger.risingmask) | |
1071 | add_trigger_function(OP_RISE, FUNC_OR, 1, 0, &lut->m3); | |
1072 | if (masks[1] & trigger.fallingmask) | |
1073 | add_trigger_function(OP_FALL, FUNC_OR, 1, 0, &lut->m3); | |
1074 | } else { | |
1075 | /* Only value/mask trigger. */ | |
1076 | lut->m3 = 0xffff; | |
1077 | } | |
1078 | ||
1079 | /* Triggertype: event. */ | |
1080 | lut->params.selres = 3; | |
1081 | ||
1082 | return SIGROK_OK; | |
1083 | } | |
1084 | ||
1085 | static int hw_start_acquisition(int device_index, gpointer session_device_id) | |
1086 | { | |
1087 | struct sigrok_device_instance *sdi; | |
1088 | struct datafeed_packet packet; | |
1089 | struct datafeed_header header; | |
1090 | struct clockselect_50 clockselect; | |
1091 | int frac; | |
1092 | uint8_t triggerselect; | |
1093 | struct triggerinout triggerinout_conf; | |
1094 | struct triggerlut lut; | |
1095 | int triggerpin; | |
1096 | ||
1097 | session_device_id = session_device_id; | |
1098 | ||
1099 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) | |
1100 | return SIGROK_ERR; | |
1101 | ||
1102 | device_index = device_index; | |
1103 | ||
1104 | /* If the samplerate has not been set, default to 50 MHz. */ | |
1105 | if (cur_firmware == -1) | |
1106 | set_samplerate(sdi, MHZ(50)); | |
1107 | ||
1108 | /* Enter trigger programming mode. */ | |
1109 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20); | |
1110 | ||
1111 | /* 100 and 200 MHz mode. */ | |
1112 | if (cur_samplerate >= MHZ(100)) { | |
1113 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81); | |
1114 | ||
1115 | /* Find which pin to trigger on from mask. */ | |
1116 | for (triggerpin = 0; triggerpin < 8; ++triggerpin) | |
1117 | if ((trigger.risingmask | trigger.fallingmask) & | |
1118 | (1 << triggerpin)) | |
1119 | break; | |
1120 | ||
1121 | /* Set trigger pin and light LED on trigger. */ | |
1122 | triggerselect = (1 << LEDSEL1) | (triggerpin & 0x7); | |
1123 | ||
1124 | /* Default rising edge. */ | |
1125 | if (trigger.fallingmask) | |
1126 | triggerselect |= 1 << 3; | |
1127 | ||
1128 | /* All other modes. */ | |
1129 | } else if (cur_samplerate <= MHZ(50)) { | |
1130 | build_basic_trigger(&lut); | |
1131 | ||
1132 | sigma_write_trigger_lut(&lut); | |
1133 | ||
1134 | triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0); | |
1135 | } | |
1136 | ||
1137 | /* Setup trigger in and out pins to default values. */ | |
1138 | memset(&triggerinout_conf, 0, sizeof(struct triggerinout)); | |
1139 | triggerinout_conf.trgout_bytrigger = 1; | |
1140 | triggerinout_conf.trgout_enable = 1; | |
1141 | ||
1142 | sigma_write_register(WRITE_TRIGGER_OPTION, | |
1143 | (uint8_t *) &triggerinout_conf, | |
1144 | sizeof(struct triggerinout)); | |
1145 | ||
1146 | /* Go back to normal mode. */ | |
1147 | sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect); | |
1148 | ||
1149 | /* Set clock select register. */ | |
1150 | if (cur_samplerate == MHZ(200)) | |
1151 | /* Enable 4 probes. */ | |
1152 | sigma_set_register(WRITE_CLOCK_SELECT, 0xf0); | |
1153 | else if (cur_samplerate == MHZ(100)) | |
1154 | /* Enable 8 probes. */ | |
1155 | sigma_set_register(WRITE_CLOCK_SELECT, 0x00); | |
1156 | else { | |
1157 | /* | |
1158 | * 50 MHz mode (or fraction thereof). Any fraction down to | |
1159 | * 50 MHz / 256 can be used, but is not supported by sigrok API. | |
1160 | */ | |
1161 | frac = MHZ(50) / cur_samplerate - 1; | |
1162 | ||
1163 | clockselect.async = 0; | |
1164 | clockselect.fraction = frac; | |
1165 | clockselect.disabled_probes = 0; | |
1166 | ||
1167 | sigma_write_register(WRITE_CLOCK_SELECT, | |
1168 | (uint8_t *) &clockselect, | |
1169 | sizeof(clockselect)); | |
1170 | } | |
1171 | ||
1172 | /* Setup maximum post trigger time. */ | |
1173 | sigma_set_register(WRITE_POST_TRIGGER, (capture_ratio * 255) / 100); | |
1174 | ||
1175 | /* Start acqusition. */ | |
1176 | gettimeofday(&start_tv, 0); | |
1177 | sigma_set_register(WRITE_MODE, 0x0d); | |
1178 | ||
1179 | /* Send header packet to the session bus. */ | |
1180 | packet.type = DF_HEADER; | |
1181 | packet.length = sizeof(struct datafeed_header); | |
1182 | packet.payload = &header; | |
1183 | header.feed_version = 1; | |
1184 | gettimeofday(&header.starttime, NULL); | |
1185 | header.samplerate = cur_samplerate; | |
1186 | header.protocol_id = PROTO_RAW; | |
1187 | header.num_probes = num_probes; | |
1188 | session_bus(session_device_id, &packet); | |
1189 | ||
1190 | /* Add capture source. */ | |
1191 | source_add(0, G_IO_IN, 10, receive_data, session_device_id); | |
1192 | ||
1193 | return SIGROK_OK; | |
1194 | } | |
1195 | ||
1196 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) | |
1197 | { | |
1198 | device_index = device_index; | |
1199 | session_device_id = session_device_id; | |
1200 | ||
1201 | /* Stop acquisition. */ | |
1202 | sigma_set_register(WRITE_MODE, 0x11); | |
1203 | ||
1204 | // XXX Set some state to indicate that data should be sent to sigrok | |
1205 | // Now, we just wait for timeout | |
1206 | } | |
1207 | ||
1208 | struct device_plugin asix_sigma_plugin_info = { | |
1209 | "asix-sigma", | |
1210 | 1, | |
1211 | hw_init, | |
1212 | hw_cleanup, | |
1213 | hw_opendev, | |
1214 | hw_closedev, | |
1215 | hw_get_device_info, | |
1216 | hw_get_status, | |
1217 | hw_get_capabilities, | |
1218 | hw_set_configuration, | |
1219 | hw_start_acquisition, | |
1220 | hw_stop_acquisition, | |
1221 | }; |