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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Sven Peter <sven@fail0verflow.com> | |
5 | * Copyright (C) 2010 Haxx Enterprises <bushing@gmail.com> | |
6 | * All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or | |
9 | * without modification, are permitted provided that the following | |
10 | * conditions are met: | |
11 | * | |
12 | * * Redistributions of source code must retain the above copyright notice, | |
13 | * this list of conditions and the following disclaimer. | |
14 | * | |
15 | * * Redistributions in binary form must reproduce the above copyright notice, | |
16 | * this list of conditions and the following disclaimer in the documentation | |
17 | * and/or other materials provided with the distribution. | |
18 | * | |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
29 | * THE POSSIBILITY OF SUCH DAMAGE. | |
30 | */ | |
31 | ||
32 | #include <assert.h> | |
33 | #include "analyzer.h" | |
34 | #include "gl_usb.h" | |
35 | #include "libsigrok-internal.h" | |
36 | ||
37 | enum { | |
38 | HARD_DATA_CHECK_SUM = 0x00, | |
39 | PASS_WORD, | |
40 | ||
41 | DEV_ID0 = 0x10, | |
42 | DEV_ID1, | |
43 | ||
44 | START_STATUS = 0x20, | |
45 | DEV_STATUS = 0x21, | |
46 | FREQUENCY_REG0 = 0x30, | |
47 | FREQUENCY_REG1, | |
48 | FREQUENCY_REG2, | |
49 | FREQUENCY_REG3, | |
50 | FREQUENCY_REG4, | |
51 | MEMORY_LENGTH, | |
52 | CLOCK_SOURCE, | |
53 | ||
54 | TRIGGER_STATUS0 = 0x40, | |
55 | TRIGGER_STATUS1, | |
56 | TRIGGER_STATUS2, | |
57 | TRIGGER_STATUS3, | |
58 | TRIGGER_STATUS4, | |
59 | TRIGGER_STATUS5, | |
60 | TRIGGER_STATUS6, | |
61 | TRIGGER_STATUS7, | |
62 | TRIGGER_STATUS8, | |
63 | ||
64 | TRIGGER_COUNT0 = 0x50, | |
65 | TRIGGER_COUNT1, | |
66 | ||
67 | TRIGGER_LEVEL0 = 0x55, | |
68 | TRIGGER_LEVEL1, | |
69 | TRIGGER_LEVEL2, | |
70 | TRIGGER_LEVEL3, | |
71 | ||
72 | RAMSIZE_TRIGGERBAR_ADDRESS0 = 0x60, | |
73 | RAMSIZE_TRIGGERBAR_ADDRESS1, | |
74 | RAMSIZE_TRIGGERBAR_ADDRESS2, | |
75 | TRIGGERBAR_ADDRESS0, | |
76 | TRIGGERBAR_ADDRESS1, | |
77 | TRIGGERBAR_ADDRESS2, | |
78 | DONT_CARE_TRIGGERBAR, | |
79 | ||
80 | FILTER_ENABLE = 0x70, | |
81 | FILTER_STATUS, | |
82 | ||
83 | ENABLE_DELAY_TIME0 = 0x7a, | |
84 | ENABLE_DELAY_TIME1, | |
85 | ||
86 | ENABLE_INSERT_DATA0 = 0x80, | |
87 | ENABLE_INSERT_DATA1, | |
88 | ENABLE_INSERT_DATA2, | |
89 | ENABLE_INSERT_DATA3, | |
90 | COMPRESSION_TYPE0, | |
91 | COMPRESSION_TYPE1, | |
92 | ||
93 | TRIGGER_ADDRESS0 = 0x90, | |
94 | TRIGGER_ADDRESS1, | |
95 | TRIGGER_ADDRESS2, | |
96 | ||
97 | NOW_ADDRESS0 = 0x96, | |
98 | NOW_ADDRESS1, | |
99 | NOW_ADDRESS2, | |
100 | ||
101 | STOP_ADDRESS0 = 0x9b, | |
102 | STOP_ADDRESS1, | |
103 | STOP_ADDRESS2, | |
104 | ||
105 | READ_RAM_STATUS = 0xa0, | |
106 | }; | |
107 | ||
108 | static int g_trigger_status[9] = { 0 }; | |
109 | static int g_trigger_count = 1; | |
110 | static int g_filter_status[8] = { 0 }; | |
111 | static int g_filter_enable = 0; | |
112 | ||
113 | static int g_freq_value = 100; | |
114 | static int g_freq_scale = FREQ_SCALE_MHZ; | |
115 | static int g_memory_size = MEMORY_SIZE_512K; | |
116 | static int g_ramsize_triggerbar_addr = 0x80000 >> 2; | |
117 | static int g_triggerbar_addr = 0x3fe; | |
118 | static int g_compression = COMPRESSION_NONE; | |
119 | ||
120 | /* Maybe unk specifies an "endpoint" or "register" of sorts. */ | |
121 | static int analyzer_write_status(libusb_device_handle *devh, unsigned char unk, | |
122 | unsigned char flags) | |
123 | { | |
124 | assert(unk <= 3); | |
125 | return gl_reg_write(devh, START_STATUS, unk << 6 | flags); | |
126 | } | |
127 | ||
128 | static int __analyzer_set_freq(libusb_device_handle *devh, int freq, int scale) | |
129 | { | |
130 | int reg0 = 0, divisor = 0, reg2 = 0; | |
131 | ||
132 | switch (scale) { | |
133 | case FREQ_SCALE_MHZ: /* MHz */ | |
134 | if (freq >= 100 && freq <= 200) { | |
135 | reg0 = freq * 0.1; | |
136 | divisor = 1; | |
137 | reg2 = 0; | |
138 | break; | |
139 | } | |
140 | if (freq >= 50 && freq < 100) { | |
141 | reg0 = freq * 0.2; | |
142 | divisor = 2; | |
143 | reg2 = 0; | |
144 | break; | |
145 | } | |
146 | if (freq >= 10 && freq < 50) { | |
147 | if (freq == 25) { | |
148 | reg0 = 25; | |
149 | divisor = 5; | |
150 | reg2 = 1; | |
151 | break; | |
152 | } else { | |
153 | reg0 = freq * 0.5; | |
154 | divisor = 5; | |
155 | reg2 = 1; | |
156 | break; | |
157 | } | |
158 | } | |
159 | if (freq >= 2 && freq < 10) { | |
160 | divisor = 5; | |
161 | reg0 = freq * 2; | |
162 | reg2 = 2; | |
163 | break; | |
164 | } | |
165 | if (freq == 1) { | |
166 | divisor = 5; | |
167 | reg2 = 16; | |
168 | reg0 = 5; | |
169 | break; | |
170 | } | |
171 | divisor = 5; | |
172 | reg0 = 5; | |
173 | reg2 = 64; | |
174 | break; | |
175 | case FREQ_SCALE_HZ: /* Hz */ | |
176 | if (freq >= 500 && freq < 1000) { | |
177 | reg0 = freq * 0.01; | |
178 | divisor = 10; | |
179 | reg2 = 64; | |
180 | break; | |
181 | } | |
182 | if (freq >= 300 && freq < 500) { | |
183 | reg0 = freq * 0.005 * 8; | |
184 | divisor = 5; | |
185 | reg2 = 67; | |
186 | break; | |
187 | } | |
188 | if (freq >= 100 && freq < 300) { | |
189 | reg0 = freq * 0.005 * 16; | |
190 | divisor = 5; | |
191 | reg2 = 68; | |
192 | break; | |
193 | } | |
194 | divisor = 5; | |
195 | reg0 = 5; | |
196 | reg2 = 64; | |
197 | break; | |
198 | case FREQ_SCALE_KHZ: /* kHz */ | |
199 | if (freq >= 500 && freq < 1000) { | |
200 | reg0 = freq * 0.01; | |
201 | divisor = 5; | |
202 | reg2 = 17; | |
203 | break; | |
204 | } | |
205 | if (freq >= 100 && freq < 500) { | |
206 | reg0 = freq * 0.05; | |
207 | divisor = 5; | |
208 | reg2 = 32; | |
209 | break; | |
210 | } | |
211 | if (freq >= 50 && freq < 100) { | |
212 | reg0 = freq * 0.1; | |
213 | divisor = 5; | |
214 | reg2 = 33; | |
215 | break; | |
216 | } | |
217 | if (freq >= 10 && freq < 50) { | |
218 | if (freq == 25) { | |
219 | reg0 = 25; | |
220 | divisor = 5; | |
221 | reg2 = 49; | |
222 | break; | |
223 | } | |
224 | reg0 = freq * 0.5; | |
225 | divisor = 5; | |
226 | reg2 = 48; | |
227 | break; | |
228 | } | |
229 | if (freq >= 2 && freq < 10) { | |
230 | divisor = 5; | |
231 | reg0 = freq * 2; | |
232 | reg2 = 50; | |
233 | break; | |
234 | } | |
235 | divisor = 5; | |
236 | reg0 = 5; | |
237 | reg2 = 64; | |
238 | break; | |
239 | default: | |
240 | divisor = 5; | |
241 | reg0 = 5; | |
242 | reg2 = 64; | |
243 | break; | |
244 | } | |
245 | ||
246 | sr_dbg("zp: Setting samplerate regs (freq=%d, scale=%d): " | |
247 | "reg0: %d, reg1: %d, reg2: %d, reg3: %d.", | |
248 | freq, scale, divisor, reg0, 0x02, reg2); | |
249 | ||
250 | if (gl_reg_write(devh, FREQUENCY_REG0, divisor) < 0) | |
251 | return -1; /* Divisor maybe? */ | |
252 | ||
253 | if (gl_reg_write(devh, FREQUENCY_REG1, reg0) < 0) | |
254 | return -1; /* 10 / 0.2 */ | |
255 | ||
256 | if (gl_reg_write(devh, FREQUENCY_REG2, 0x02) < 0) | |
257 | return -1; /* Always 2 */ | |
258 | ||
259 | if (gl_reg_write(devh, FREQUENCY_REG4, reg2) < 0) | |
260 | return -1; | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
265 | static void __analyzer_set_ramsize_trigger_address(libusb_device_handle *devh, | |
266 | unsigned int address) | |
267 | { | |
268 | gl_reg_write(devh, RAMSIZE_TRIGGERBAR_ADDRESS0, (address >> 0) & 0xFF); | |
269 | gl_reg_write(devh, RAMSIZE_TRIGGERBAR_ADDRESS1, (address >> 8) & 0xFF); | |
270 | gl_reg_write(devh, RAMSIZE_TRIGGERBAR_ADDRESS2, (address >> 16) & 0xFF); | |
271 | } | |
272 | ||
273 | static void __analyzer_set_triggerbar_address(libusb_device_handle *devh, | |
274 | unsigned int address) | |
275 | { | |
276 | gl_reg_write(devh, TRIGGERBAR_ADDRESS0, (address >> 0) & 0xFF); | |
277 | gl_reg_write(devh, TRIGGERBAR_ADDRESS1, (address >> 8) & 0xFF); | |
278 | gl_reg_write(devh, TRIGGERBAR_ADDRESS2, (address >> 16) & 0xFF); | |
279 | } | |
280 | ||
281 | static void __analyzer_set_compression(libusb_device_handle *devh, | |
282 | unsigned int type) | |
283 | { | |
284 | gl_reg_write(devh, COMPRESSION_TYPE0, (type >> 0) & 0xFF); | |
285 | gl_reg_write(devh, COMPRESSION_TYPE1, (type >> 8) & 0xFF); | |
286 | } | |
287 | ||
288 | static void __analyzer_set_trigger_count(libusb_device_handle *devh, | |
289 | unsigned int count) | |
290 | { | |
291 | gl_reg_write(devh, TRIGGER_COUNT0, (count >> 0) & 0xFF); | |
292 | gl_reg_write(devh, TRIGGER_COUNT1, (count >> 8) & 0xFF); | |
293 | } | |
294 | ||
295 | static void analyzer_write_enable_insert_data(libusb_device_handle *devh) | |
296 | { | |
297 | gl_reg_write(devh, ENABLE_INSERT_DATA0, 0x12); | |
298 | gl_reg_write(devh, ENABLE_INSERT_DATA1, 0x34); | |
299 | gl_reg_write(devh, ENABLE_INSERT_DATA2, 0x56); | |
300 | gl_reg_write(devh, ENABLE_INSERT_DATA3, 0x78); | |
301 | } | |
302 | ||
303 | static void analyzer_set_filter(libusb_device_handle *devh) | |
304 | { | |
305 | int i; | |
306 | gl_reg_write(devh, FILTER_ENABLE, g_filter_enable); | |
307 | for (i = 0; i < 8; i++) | |
308 | gl_reg_write(devh, FILTER_STATUS + i, g_filter_status[i]); | |
309 | } | |
310 | ||
311 | SR_PRIV void analyzer_reset(libusb_device_handle *devh) | |
312 | { | |
313 | analyzer_write_status(devh, 3, STATUS_FLAG_NONE); // reset device | |
314 | analyzer_write_status(devh, 3, STATUS_FLAG_RESET); // reset device | |
315 | } | |
316 | ||
317 | SR_PRIV void analyzer_initialize(libusb_device_handle *devh) | |
318 | { | |
319 | analyzer_write_status(devh, 1, STATUS_FLAG_NONE); | |
320 | analyzer_write_status(devh, 1, STATUS_FLAG_INIT); | |
321 | analyzer_write_status(devh, 1, STATUS_FLAG_NONE); | |
322 | } | |
323 | ||
324 | SR_PRIV void analyzer_wait(libusb_device_handle *devh, int set, int unset) | |
325 | { | |
326 | int status; | |
327 | while (1) { | |
328 | status = gl_reg_read(devh, DEV_STATUS); | |
329 | if ((status & set) && ((status & unset) == 0)) | |
330 | return; | |
331 | } | |
332 | } | |
333 | ||
334 | SR_PRIV void analyzer_read_start(libusb_device_handle *devh) | |
335 | { | |
336 | int i; | |
337 | ||
338 | analyzer_write_status(devh, 3, STATUS_FLAG_20 | STATUS_FLAG_READ); | |
339 | ||
340 | for (i = 0; i < 8; i++) | |
341 | (void)gl_reg_read(devh, READ_RAM_STATUS); | |
342 | } | |
343 | ||
344 | SR_PRIV int analyzer_read_data(libusb_device_handle *devh, void *buffer, | |
345 | unsigned int size) | |
346 | { | |
347 | return gl_read_bulk(devh, buffer, size); | |
348 | } | |
349 | ||
350 | SR_PRIV void analyzer_read_stop(libusb_device_handle *devh) | |
351 | { | |
352 | analyzer_write_status(devh, 3, STATUS_FLAG_20); | |
353 | analyzer_write_status(devh, 3, STATUS_FLAG_NONE); | |
354 | } | |
355 | ||
356 | SR_PRIV void analyzer_start(libusb_device_handle *devh) | |
357 | { | |
358 | analyzer_write_status(devh, 1, STATUS_FLAG_NONE); | |
359 | analyzer_write_status(devh, 1, STATUS_FLAG_INIT); | |
360 | analyzer_write_status(devh, 1, STATUS_FLAG_NONE); | |
361 | analyzer_write_status(devh, 1, STATUS_FLAG_GO); | |
362 | } | |
363 | ||
364 | SR_PRIV void analyzer_configure(libusb_device_handle *devh) | |
365 | { | |
366 | int i; | |
367 | ||
368 | /* Write_Start_Status */ | |
369 | analyzer_write_status(devh, 1, STATUS_FLAG_RESET); | |
370 | analyzer_write_status(devh, 1, STATUS_FLAG_NONE); | |
371 | ||
372 | /* Start_Config_Outside_Device ? */ | |
373 | analyzer_write_status(devh, 1, STATUS_FLAG_INIT); | |
374 | analyzer_write_status(devh, 1, STATUS_FLAG_NONE); | |
375 | ||
376 | /* SetData_To_Frequence_Reg */ | |
377 | __analyzer_set_freq(devh, g_freq_value, g_freq_scale); | |
378 | ||
379 | /* SetMemory_Length */ | |
380 | gl_reg_write(devh, MEMORY_LENGTH, g_memory_size); | |
381 | ||
382 | /* Sele_Inside_Outside_Clock */ | |
383 | gl_reg_write(devh, CLOCK_SOURCE, 0x03); | |
384 | ||
385 | /* Set_Trigger_Status */ | |
386 | for (i = 0; i < 9; i++) | |
387 | gl_reg_write(devh, TRIGGER_STATUS0 + i, g_trigger_status[i]); | |
388 | ||
389 | __analyzer_set_trigger_count(devh, g_trigger_count); | |
390 | ||
391 | /* Set_Trigger_Level */ | |
392 | gl_reg_write(devh, TRIGGER_LEVEL0, 0x31); | |
393 | gl_reg_write(devh, TRIGGER_LEVEL1, 0x31); | |
394 | gl_reg_write(devh, TRIGGER_LEVEL2, 0x31); | |
395 | gl_reg_write(devh, TRIGGER_LEVEL3, 0x31); | |
396 | ||
397 | /* Size of actual memory >> 2 */ | |
398 | __analyzer_set_ramsize_trigger_address(devh, g_ramsize_triggerbar_addr); | |
399 | __analyzer_set_triggerbar_address(devh, g_triggerbar_addr); | |
400 | ||
401 | /* Set_Dont_Care_TriggerBar */ | |
402 | gl_reg_write(devh, DONT_CARE_TRIGGERBAR, 0x01); | |
403 | ||
404 | /* Enable_Status */ | |
405 | analyzer_set_filter(devh); | |
406 | ||
407 | /* Set_Enable_Delay_Time */ | |
408 | gl_reg_write(devh, 0x7a, 0x00); | |
409 | gl_reg_write(devh, 0x7b, 0x00); | |
410 | analyzer_write_enable_insert_data(devh); | |
411 | __analyzer_set_compression(devh, g_compression); | |
412 | } | |
413 | ||
414 | SR_PRIV void analyzer_add_trigger(int channel, int type) | |
415 | { | |
416 | int i; | |
417 | ||
418 | if ((channel & 0xf) >= 8) | |
419 | return; | |
420 | ||
421 | if (type == TRIGGER_HIGH || type == TRIGGER_LOW) { | |
422 | if (channel & CHANNEL_A) | |
423 | i = 0; | |
424 | else if (channel & CHANNEL_B) | |
425 | i = 2; | |
426 | else if (channel & CHANNEL_C) | |
427 | i = 4; | |
428 | else if (channel & CHANNEL_D) | |
429 | i = 6; | |
430 | else | |
431 | return; | |
432 | if ((channel & 0xf) >= 4) { | |
433 | i++; | |
434 | channel -= 4; | |
435 | } | |
436 | g_trigger_status[i] |= | |
437 | 1 << ((2 * channel) + (type == TRIGGER_LOW ? 1 : 0)); | |
438 | } else { | |
439 | if (type == TRIGGER_POSEDGE) | |
440 | g_trigger_status[8] = 0x40; | |
441 | else if (type == TRIGGER_NEGEDGE) | |
442 | g_trigger_status[8] = 0x80; | |
443 | else | |
444 | g_trigger_status[8] = 0xc0; | |
445 | ||
446 | /* FIXME: Just guessed the index; need to verify. */ | |
447 | if (channel & CHANNEL_B) | |
448 | g_trigger_status[8] += 8; | |
449 | else if (channel & CHANNEL_C) | |
450 | g_trigger_status[8] += 16; | |
451 | else if (channel & CHANNEL_D) | |
452 | g_trigger_status[8] += 24; | |
453 | g_trigger_status[8] += channel % 8; | |
454 | } | |
455 | } | |
456 | ||
457 | SR_PRIV void analyzer_add_filter(int channel, int type) | |
458 | { | |
459 | int i; | |
460 | ||
461 | if (type != FILTER_HIGH && type != FILTER_LOW) | |
462 | return; | |
463 | if ((channel & 0xf) >= 8) | |
464 | return; | |
465 | ||
466 | if (channel & CHANNEL_A) | |
467 | i = 0; | |
468 | else if (channel & CHANNEL_B) | |
469 | i = 2; | |
470 | else if (channel & CHANNEL_C) | |
471 | i = 4; | |
472 | else if (channel & CHANNEL_D) | |
473 | i = 6; | |
474 | else | |
475 | return; | |
476 | ||
477 | if ((channel & 0xf) >= 4) { | |
478 | i++; | |
479 | channel -= 4; | |
480 | } | |
481 | ||
482 | g_filter_status[i] |= | |
483 | 1 << ((2 * channel) + (type == FILTER_LOW ? 1 : 0)); | |
484 | ||
485 | g_filter_enable = 1; | |
486 | } | |
487 | ||
488 | SR_PRIV void analyzer_set_trigger_count(int count) | |
489 | { | |
490 | g_trigger_count = count; | |
491 | } | |
492 | ||
493 | SR_PRIV void analyzer_set_freq(int freq, int scale) | |
494 | { | |
495 | g_freq_value = freq; | |
496 | g_freq_scale = scale; | |
497 | } | |
498 | ||
499 | SR_PRIV void analyzer_set_memory_size(unsigned int size) | |
500 | { | |
501 | g_memory_size = size; | |
502 | } | |
503 | ||
504 | SR_PRIV void analyzer_set_ramsize_trigger_address(unsigned int address) | |
505 | { | |
506 | g_ramsize_triggerbar_addr = address; | |
507 | } | |
508 | ||
509 | SR_PRIV void analyzer_set_triggerbar_address(unsigned int address) | |
510 | { | |
511 | g_triggerbar_addr = address; | |
512 | } | |
513 | ||
514 | SR_PRIV unsigned int analyzer_read_id(libusb_device_handle *devh) | |
515 | { | |
516 | return gl_reg_read(devh, DEV_ID1) << 8 | gl_reg_read(devh, DEV_ID0); | |
517 | } | |
518 | ||
519 | SR_PRIV unsigned int analyzer_get_stop_address(libusb_device_handle *devh) | |
520 | { | |
521 | return gl_reg_read(devh, STOP_ADDRESS2) << 16 | gl_reg_read(devh, | |
522 | STOP_ADDRESS1) << 8 | gl_reg_read(devh, STOP_ADDRESS0); | |
523 | } | |
524 | ||
525 | SR_PRIV unsigned int analyzer_get_now_address(libusb_device_handle *devh) | |
526 | { | |
527 | return gl_reg_read(devh, NOW_ADDRESS2) << 16 | gl_reg_read(devh, | |
528 | NOW_ADDRESS1) << 8 | gl_reg_read(devh, NOW_ADDRESS0); | |
529 | } | |
530 | ||
531 | SR_PRIV unsigned int analyzer_get_trigger_address(libusb_device_handle *devh) | |
532 | { | |
533 | return gl_reg_read(devh, TRIGGER_ADDRESS2) << 16 | gl_reg_read(devh, | |
534 | TRIGGER_ADDRESS1) << 8 | gl_reg_read(devh, TRIGGER_ADDRESS0); | |
535 | } | |
536 | ||
537 | SR_PRIV void analyzer_set_compression(unsigned int type) | |
538 | { | |
539 | g_compression = type; | |
540 | } | |
541 | ||
542 | SR_PRIV void analyzer_wait_button(libusb_device_handle *devh) | |
543 | { | |
544 | analyzer_wait(devh, STATUS_BUTTON_PRESSED, 0); | |
545 | } | |
546 | ||
547 | SR_PRIV void analyzer_wait_data(libusb_device_handle *devh) | |
548 | { | |
549 | analyzer_wait(devh, STATUS_READY | 8, STATUS_BUSY); | |
550 | } | |
551 | ||
552 | SR_PRIV int analyzer_decompress(void *input, unsigned int input_len, | |
553 | void *output, unsigned int output_len) | |
554 | { | |
555 | unsigned char *in = input; | |
556 | unsigned char *out = output; | |
557 | unsigned int A, B, C, count; | |
558 | unsigned int written = 0; | |
559 | ||
560 | while (input_len > 0) { | |
561 | A = *in++; | |
562 | B = *in++; | |
563 | C = *in++; | |
564 | count = (*in++) + 1; | |
565 | ||
566 | if (count > output_len) | |
567 | count = output_len; | |
568 | output_len -= count; | |
569 | written += count; | |
570 | ||
571 | while (count--) { | |
572 | *out++ = A; | |
573 | *out++ = B; | |
574 | *out++ = C; | |
575 | *out++ = 0; /* Channel D */ | |
576 | } | |
577 | ||
578 | input_len -= 4; | |
579 | if (output_len == 0) | |
580 | break; | |
581 | } | |
582 | ||
583 | return written; | |
584 | } |