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1//-----------------------------------------------------------------------------
2// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3//
4// This code is licensed to you under the terms of the GNU GPL, version 2 or,
5// at your option, any later version. See the LICENSE.txt file for the text of
6// the license.
7//-----------------------------------------------------------------------------
8// Data and Graph commands
9//-----------------------------------------------------------------------------
10
11#include <stdio.h>
12#include <stdlib.h>
13#include <string.h>
14#include <limits.h>
15#include "proxmark3.h"
16#include "data.h"
17#include "ui.h"
18#include "graph.h"
19#include "cmdparser.h"
20#include "util.h"
21#include "cmdmain.h"
22#include "cmddata.h"
23#include "lfdemod.h"
24#include "usb_cmd.h"
25#include "crc.h"
26
27uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
28uint8_t g_debugMode;
29int DemodBufferLen;
30static int CmdHelp(const char *Cmd);
31
32//set the demod buffer with given array of binary (one bit per byte)
33//by marshmellow
34void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
35{
36 if (buff == NULL)
37 return;
38
39 if ( size >= MAX_DEMOD_BUF_LEN)
40 size = MAX_DEMOD_BUF_LEN;
41
42 size_t i = 0;
43 for (; i < size; i++){
44 DemodBuffer[i]=buff[startIdx++];
45 }
46 DemodBufferLen=size;
47 return;
48}
49
50int CmdSetDebugMode(const char *Cmd)
51{
52 int demod=0;
53 sscanf(Cmd, "%i", &demod);
54 g_debugMode=(uint8_t)demod;
55 return 1;
56}
57
58//by marshmellow
59void printDemodBuff(void)
60{
61 uint32_t i = 0;
62 int bitLen = DemodBufferLen;
63 if (bitLen<16) {
64 PrintAndLog("no bits found in demod buffer");
65 return;
66 }
67 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
68
69 // ensure equally divided by 16
70 bitLen &= 0xfff0;
71
72 for (i = 0; i <= (bitLen-16); i+=16) {
73 PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
74 DemodBuffer[i],
75 DemodBuffer[i+1],
76 DemodBuffer[i+2],
77 DemodBuffer[i+3],
78 DemodBuffer[i+4],
79 DemodBuffer[i+5],
80 DemodBuffer[i+6],
81 DemodBuffer[i+7],
82 DemodBuffer[i+8],
83 DemodBuffer[i+9],
84 DemodBuffer[i+10],
85 DemodBuffer[i+11],
86 DemodBuffer[i+12],
87 DemodBuffer[i+13],
88 DemodBuffer[i+14],
89 DemodBuffer[i+15]);
90 }
91 return;
92}
93
94int CmdPrintDemodBuff(const char *Cmd)
95{
96 char hex;
97 char printBuff[512]={0x00};
98 uint8_t numBits = DemodBufferLen & 0xFFF0;
99 sscanf(Cmd, "%c", &hex);
100 if (hex == 'h'){
101 PrintAndLog("Usage: data printdemodbuffer [x]");
102 PrintAndLog("Options: ");
103 PrintAndLog(" h This help");
104 PrintAndLog(" x output in hex (omit for binary output)");
105 return 0;
106 }
107 if (hex == 'x'){
108 numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
109 if (numBits==0) return 0;
110 PrintAndLog("DemodBuffer: %s",printBuff);
111 } else {
112 printDemodBuff();
113 }
114 return 1;
115}
116int CmdAmp(const char *Cmd)
117{
118 int i, rising, falling;
119 int max = INT_MIN, min = INT_MAX;
120
121 for (i = 10; i < GraphTraceLen; ++i) {
122 if (GraphBuffer[i] > max)
123 max = GraphBuffer[i];
124 if (GraphBuffer[i] < min)
125 min = GraphBuffer[i];
126 }
127
128 if (max != min) {
129 rising = falling= 0;
130 for (i = 0; i < GraphTraceLen; ++i) {
131 if (GraphBuffer[i + 1] < GraphBuffer[i]) {
132 if (rising) {
133 GraphBuffer[i] = max;
134 rising = 0;
135 }
136 falling = 1;
137 }
138 if (GraphBuffer[i + 1] > GraphBuffer[i]) {
139 if (falling) {
140 GraphBuffer[i] = min;
141 falling = 0;
142 }
143 rising= 1;
144 }
145 }
146 }
147 RepaintGraphWindow();
148 return 0;
149}
150
151/*
152 * Generic command to demodulate ASK.
153 *
154 * Argument is convention: positive or negative (High mod means zero
155 * or high mod means one)
156 *
157 * Updates the Graph trace with 0/1 values
158 *
159 * Arguments:
160 * c : 0 or 1 (or invert)
161 */
162 //this method ignores the clock
163
164 //this function strictly converts highs and lows to 1s and 0s for each sample in the graphbuffer
165int Cmdaskdemod(const char *Cmd)
166{
167 int i;
168 int c, high = 0, low = 0;
169
170 sscanf(Cmd, "%i", &c);
171
172 /* Detect high and lows */
173 for (i = 0; i < GraphTraceLen; ++i)
174 {
175 if (GraphBuffer[i] > high)
176 high = GraphBuffer[i];
177 else if (GraphBuffer[i] < low)
178 low = GraphBuffer[i];
179 }
180 high=abs(high*.75);
181 low=abs(low*.75);
182 if (c != 0 && c != 1) {
183 PrintAndLog("Invalid argument: %s", Cmd);
184 return 0;
185 }
186 //prime loop
187 if (GraphBuffer[0] > 0) {
188 GraphBuffer[0] = 1-c;
189 } else {
190 GraphBuffer[0] = c;
191 }
192 for (i = 1; i < GraphTraceLen; ++i) {
193 /* Transitions are detected at each peak
194 * Transitions are either:
195 * - we're low: transition if we hit a high
196 * - we're high: transition if we hit a low
197 * (we need to do it this way because some tags keep high or
198 * low for long periods, others just reach the peak and go
199 * down)
200 */
201 //[marhsmellow] change == to >= for high and <= for low for fuzz
202 if ((GraphBuffer[i] >= high) && (GraphBuffer[i - 1] == c)) {
203 GraphBuffer[i] = 1 - c;
204 } else if ((GraphBuffer[i] <= low) && (GraphBuffer[i - 1] == (1 - c))){
205 GraphBuffer[i] = c;
206 } else {
207 /* No transition */
208 GraphBuffer[i] = GraphBuffer[i - 1];
209 }
210 }
211 RepaintGraphWindow();
212 return 0;
213}
214
215//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
216int CmdGetBitStream(const char *Cmd)
217{
218 int i;
219 CmdHpf(Cmd);
220 for (i = 0; i < GraphTraceLen; i++) {
221 if (GraphBuffer[i] >= 1) {
222 GraphBuffer[i] = 1;
223 } else {
224 GraphBuffer[i] = 0;
225 }
226 }
227 RepaintGraphWindow();
228 return 0;
229}
230
231
232//by marshmellow
233void printBitStream(uint8_t BitStream[], uint32_t bitLen)
234{
235 uint32_t i = 0;
236 if (bitLen<16) {
237 PrintAndLog("Too few bits found: %d",bitLen);
238 return;
239 }
240 if (bitLen>512) bitLen=512;
241
242 // ensure equally divided by 16
243 bitLen &= 0xfff0;
244
245
246 for (i = 0; i <= (bitLen-16); i+=16) {
247 PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
248 BitStream[i],
249 BitStream[i+1],
250 BitStream[i+2],
251 BitStream[i+3],
252 BitStream[i+4],
253 BitStream[i+5],
254 BitStream[i+6],
255 BitStream[i+7],
256 BitStream[i+8],
257 BitStream[i+9],
258 BitStream[i+10],
259 BitStream[i+11],
260 BitStream[i+12],
261 BitStream[i+13],
262 BitStream[i+14],
263 BitStream[i+15]);
264 }
265 return;
266}
267//by marshmellow
268//print 64 bit EM410x ID in multiple formats
269void printEM410x(uint32_t hi, uint64_t id)
270{
271 if (id || hi){
272 uint64_t iii=1;
273 uint64_t id2lo=0;
274 uint32_t ii=0;
275 uint32_t i=0;
276 for (ii=5; ii>0;ii--){
277 for (i=0;i<8;i++){
278 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
279 }
280 }
281 if (hi){
282 //output 88 bit em id
283 PrintAndLog("EM TAG ID : %06x%016llx", hi, id);
284 } else{
285 //output 40 bit em id
286 PrintAndLog("EM TAG ID : %010llx", id);
287 PrintAndLog("Unique TAG ID: %010llx", id2lo);
288 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
289 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFF);
290 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
291 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
292 PrintAndLog("DEZ 14/IK2 : %014lld",id);
293 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
294 PrintAndLog("Other : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
295 }
296 }
297 return;
298}
299
300//by marshmellow
301//takes 3 arguments - clock, invert and maxErr as integers
302//attempts to demodulate ask while decoding manchester
303//prints binary found and saves in graphbuffer for further commands
304int CmdAskEM410xDemod(const char *Cmd)
305{
306 char cmdp = param_getchar(Cmd, 0);
307 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
308 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
309 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
310 PrintAndLog(" <invert>, 1 for invert output");
311 PrintAndLog(" [set maximum allowed errors], default = 100.");
312 PrintAndLog("");
313 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
314 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
315 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
316 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
317 PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
318 return 0;
319 }
320 int ans = ASKmanDemod(Cmd, FALSE, FALSE);
321 if (!ans) return 0;
322
323 uint64_t lo =0;
324 uint32_t hi =0;
325 size_t idx=0;
326 if (Em410xDecode(DemodBuffer,(size_t *) &DemodBufferLen, &idx, &hi, &lo)){
327 if (g_debugMode){
328 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, DemodBufferLen);
329 printDemodBuff();
330 }
331 PrintAndLog("EM410x pattern found: ");
332 printEM410x(hi, lo);
333 return 1;
334 }
335 return 0;
336}
337
338int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch)
339{
340 int invert=0;
341 int clk=0;
342 int maxErr=100;
343
344 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
345 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
346 if (invert != 0 && invert != 1) {
347 PrintAndLog("Invalid argument: %s", Cmd);
348 return 0;
349 }
350 if (clk==1){
351 invert=1;
352 clk=0;
353 }
354 size_t BitLen = getFromGraphBuf(BitStream);
355 if (g_debugMode==1) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
356 if (BitLen==0) return 0;
357 int errCnt=0;
358 errCnt = askmandemod(BitStream, &BitLen, &clk, &invert, maxErr);
359 if (errCnt<0||BitLen<16){ //if fatal error (or -1)
360 if (g_debugMode==1) PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
361 return 0;
362 }
363 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen);
364
365 //output
366 if (errCnt>0){
367 if (verbose || g_debugMode) PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
368 }
369 if (verbose || g_debugMode) PrintAndLog("ASK/Manchester decoded bitstream:");
370 // Now output the bitstream to the scrollback by line of 16 bits
371 setDemodBuf(BitStream,BitLen,0);
372 if (verbose || g_debugMode) printDemodBuff();
373 uint64_t lo =0;
374 uint32_t hi =0;
375 size_t idx=0;
376 if (emSearch){
377 if (Em410xDecode(BitStream, &BitLen, &idx, &hi, &lo)){
378 //set GraphBuffer for clone or sim command
379 setDemodBuf(BitStream, BitLen, idx);
380 if (g_debugMode){
381 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
382 printDemodBuff();
383 }
384 if (verbose) PrintAndLog("EM410x pattern found: ");
385 if (verbose) printEM410x(hi, lo);
386 return 1;
387 }
388 }
389 return 1;
390}
391
392//by marshmellow
393//takes 3 arguments - clock, invert, maxErr as integers
394//attempts to demodulate ask while decoding manchester
395//prints binary found and saves in graphbuffer for further commands
396int Cmdaskmandemod(const char *Cmd)
397{
398 char cmdp = param_getchar(Cmd, 0);
399 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
400 PrintAndLog("Usage: data rawdemod am [clock] <0|1> [maxError]");
401 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
402 PrintAndLog(" <invert>, 1 for invert output");
403 PrintAndLog(" [set maximum allowed errors], default = 100.");
404 PrintAndLog("");
405 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
406 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
407 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
408 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
409 PrintAndLog(" : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
410 return 0;
411 }
412 return ASKmanDemod(Cmd, TRUE, TRUE);
413}
414
415//by marshmellow
416//manchester decode
417//stricktly take 10 and 01 and convert to 0 and 1
418int Cmdmandecoderaw(const char *Cmd)
419{
420 int i =0;
421 int errCnt=0;
422 size_t size=0;
423 size_t maxErr = 20;
424 char cmdp = param_getchar(Cmd, 0);
425 if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') {
426 PrintAndLog("Usage: data manrawdecode");
427 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
428 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
429 PrintAndLog("");
430 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
431 return 0;
432 }
433 if (DemodBufferLen==0) return 0;
434 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
435 int high=0,low=0;
436 for (;i<DemodBufferLen;++i){
437 if (DemodBuffer[i]>high) high=DemodBuffer[i];
438 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
439 BitStream[i]=DemodBuffer[i];
440 }
441 if (high>1 || low <0 ){
442 PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode");
443 return 0;
444 }
445 size=i;
446 errCnt=manrawdecode(BitStream, &size);
447 if (errCnt>=maxErr){
448 PrintAndLog("Too many errors: %d",errCnt);
449 return 0;
450 }
451 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
452 printBitStream(BitStream, size);
453 if (errCnt==0){
454 uint64_t id = 0;
455 uint32_t hi = 0;
456 size_t idx=0;
457 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
458 //need to adjust to set bitstream back to manchester encoded data
459 //setDemodBuf(BitStream, size, idx);
460
461 printEM410x(hi, id);
462 }
463 }
464 return 1;
465}
466
467//by marshmellow
468//biphase decode
469//take 01 or 10 = 0 and 11 or 00 = 1
470//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
471// and "invert" default = 0 if 1 it will invert output
472// since it is not like manchester and doesn't have an incorrect bit pattern we
473// cannot determine if our decode is correct or if it should be shifted by one bit
474// the argument offset allows us to manually shift if the output is incorrect
475// (better would be to demod and decode at the same time so we can distinguish large
476// width waves vs small width waves to help the decode positioning) or askbiphdemod
477int CmdBiphaseDecodeRaw(const char *Cmd)
478{
479 size_t size=0;
480 int offset=0, invert=0, maxErr=20, errCnt=0;
481 char cmdp = param_getchar(Cmd, 0);
482 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
483 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
484 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
485 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
486 PrintAndLog("");
487 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
488 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
489 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
490 PrintAndLog("");
491 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
492 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
493 return 0;
494 }
495 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
496 if (DemodBufferLen==0){
497 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
498 return 0;
499 }
500 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
501 memcpy(BitStream, DemodBuffer, DemodBufferLen);
502 size = DemodBufferLen;
503 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
504 if (errCnt<0){
505 PrintAndLog("Error during decode:%d", errCnt);
506 return 0;
507 }
508 if (errCnt>maxErr){
509 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
510 return 0;
511 }
512
513 if (errCnt>0){
514 PrintAndLog("# Errors found during Demod (shown as 77 in bit stream): %d",errCnt);
515 }
516 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
517 printBitStream(BitStream, size);
518
519 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
520 return 1;
521}
522
523// set demod buffer back to raw after biphase demod
524void setBiphasetoRawDemodBuf(uint8_t *BitStream, size_t size)
525{
526 uint8_t rawStream[512]={0x00};
527 size_t i=0;
528 uint8_t curPhase=0;
529 if (size > 256) {
530 PrintAndLog("ERROR - Biphase Demod Buffer overrun");
531 return;
532 }
533 for (size_t idx=0; idx<size; idx++){
534 if(!BitStream[idx]){
535 rawStream[i++] = curPhase;
536 rawStream[i++] = curPhase;
537 curPhase ^= 1;
538 } else {
539 rawStream[i++] = curPhase;
540 rawStream[i++] = curPhase ^ 1;
541 }
542 }
543 setDemodBuf(rawStream,i,0);
544 return;
545}
546
547//by marshmellow
548//takes 4 arguments - clock, invert, maxErr as integers and amplify as char
549//attempts to demodulate ask only
550//prints binary found and saves in graphbuffer for further commands
551int ASKrawDemod(const char *Cmd, bool verbose)
552{
553 int invert=0;
554 int clk=0;
555 int maxErr=100;
556 uint8_t askAmp = 0;
557 char amp = param_getchar(Cmd, 0);
558 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
559 sscanf(Cmd, "%i %i %i %c", &clk, &invert, &maxErr, &amp);
560 if (invert != 0 && invert != 1) {
561 if (verbose || g_debugMode) PrintAndLog("Invalid argument: %s", Cmd);
562 return 0;
563 }
564 if (clk==1){
565 invert=1;
566 clk=0;
567 }
568 if (amp == 'a' || amp == 'A') askAmp=1;
569 size_t BitLen = getFromGraphBuf(BitStream);
570 if (BitLen==0) return 0;
571 int errCnt=0;
572 errCnt = askrawdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp);
573 if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
574 if (verbose || g_debugMode) PrintAndLog("no data found");
575 if (g_debugMode) PrintAndLog("errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
576 return 0;
577 }
578 if (verbose || g_debugMode) PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d", clk, invert, BitLen);
579
580 //move BitStream back to DemodBuffer
581 setDemodBuf(BitStream,BitLen,0);
582
583 //output
584 if (errCnt>0 && (verbose || g_debugMode)){
585 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d", errCnt);
586 }
587 if (verbose || g_debugMode){
588 PrintAndLog("ASK demoded bitstream:");
589 // Now output the bitstream to the scrollback by line of 16 bits
590 printBitStream(BitStream,BitLen);
591 }
592 return 1;
593}
594
595//by marshmellow
596// - ASK Demod then Biphase decode GraphBuffer samples
597int ASKbiphaseDemod(const char *Cmd, bool verbose)
598{
599 //ask raw demod GraphBuffer first
600 int offset=0, clk=0, invert=0, maxErr=0, ans=0;
601 ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
602 if (ans>0)
603 ans = ASKrawDemod(Cmd+2, FALSE);
604 else
605 ans = ASKrawDemod(Cmd, FALSE);
606 if (!ans) {
607 if (g_debugMode || verbose) PrintAndLog("Error AskrawDemod: %d", ans);
608 return 0;
609 }
610
611 //attempt to Biphase decode DemodBuffer
612 size_t size = DemodBufferLen;
613 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
614 memcpy(BitStream, DemodBuffer, DemodBufferLen);
615
616 int errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
617 if (errCnt < 0){
618 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
619 return 0;
620 }
621 if (errCnt > maxErr) {
622 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
623 return 0;
624 }
625 //success set DemodBuffer and return
626 setDemodBuf(BitStream, size, 0);
627 if (g_debugMode || verbose){
628 PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
629 printDemodBuff();
630 }
631 return 1;
632}
633//by marshmellow - see ASKbiphaseDemod
634int Cmdaskbiphdemod(const char *Cmd)
635{
636 char cmdp = param_getchar(Cmd, 0);
637 if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') {
638 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] <amplify>");
639 PrintAndLog(" [offset], offset to begin biphase, default=0");
640 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
641 PrintAndLog(" <invert>, 1 to invert output");
642 PrintAndLog(" [set maximum allowed errors], default = 100");
643 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
644 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
645 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
646 PrintAndLog(" NOTE: any other arg must have previous args set to work");
647 PrintAndLog("");
648 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
649 PrintAndLog(" : data rawdemod ab a = demod an ask/biph tag from GraphBuffer, amplified");
650 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
651 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
652 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
653 PrintAndLog(" : data rawdemod ab 0 64 1 0 = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
654 PrintAndLog(" : data rawdemod ab 0 64 1 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
655 return 0;
656 }
657 return ASKbiphaseDemod(Cmd, TRUE);
658}
659
660//by marshmellow
661//attempts to demodulate and identify a G_Prox_II verex/chubb card
662//WARNING: if it fails during some points it will destroy the DemodBuffer data
663// but will leave the GraphBuffer intact.
664//if successful it will push askraw data back to demod buffer ready for emulation
665int CmdG_Prox_II_Demod(const char *Cmd)
666{
667 if (!ASKbiphaseDemod(Cmd, FALSE)){
668 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
669 return 0;
670 }
671 size_t size = DemodBufferLen;
672 //call lfdemod.c demod for gProxII
673 int ans = gProxII_Demod(DemodBuffer, &size);
674 if (ans < 0){
675 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
676 return 0;
677 }
678 //got a good demod
679 uint32_t ByteStream[65] = {0x00};
680 uint8_t xorKey=0;
681 uint8_t keyCnt=0;
682 uint8_t bitCnt=0;
683 uint8_t ByteCnt=0;
684 size_t startIdx = ans + 6; //start after preamble
685 for (size_t idx = 0; idx<size-6; idx++){
686 if ((idx+1) % 5 == 0){
687 //spacer bit - should be 0
688 if (DemodBuffer[startIdx+idx] != 0) {
689 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
690 return 0;
691 }
692 continue;
693 }
694 if (keyCnt<8){ //lsb first
695 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
696 keyCnt++;
697 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
698 continue;
699 }
700 //lsb first
701 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
702 bitCnt++;
703 if (bitCnt % 8 == 0){
704 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
705 bitCnt=0;
706 ByteCnt++;
707 }
708 }
709 for (uint8_t i = 0; i < ByteCnt; i++){
710 ByteStream[i] ^= xorKey; //xor
711 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
712 }
713 //now ByteStream contains 64 bytes of decrypted raw tag data
714 //
715 uint8_t fmtLen = ByteStream[0]>>2;
716 uint32_t FC = 0;
717 uint32_t Card = 0;
718 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
719 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
720 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
721
722 if (fmtLen==36){
723 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
724 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
725 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
726 } else if(fmtLen==26){
727 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
728 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
729 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
730 } else {
731 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
732 }
733 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
734 setDemodBuf(DemodBuffer+ans, 96, 0);
735 return 1;
736}
737
738//by marshmellow - see ASKrawDemod
739int Cmdaskrawdemod(const char *Cmd)
740{
741 char cmdp = param_getchar(Cmd, 0);
742 if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') {
743 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [amplify]");
744 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
745 PrintAndLog(" <invert>, 1 to invert output");
746 PrintAndLog(" [set maximum allowed errors], default = 100");
747 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
748 PrintAndLog("");
749 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
750 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
751 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
752 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
753 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
754 PrintAndLog(" : data rawdemod ar 64 1 0 = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
755 PrintAndLog(" : data rawdemod ar 64 1 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
756 return 0;
757 }
758 return ASKrawDemod(Cmd, TRUE);
759}
760
761int AutoCorrelate(int window, bool SaveGrph, bool verbose)
762{
763 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
764 size_t Correlation = 0;
765 int maxSum = 0;
766 int lastMax = 0;
767 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
768 for (int i = 0; i < GraphTraceLen - window; ++i) {
769 int sum = 0;
770 for (int j = 0; j < window; ++j) {
771 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
772 }
773 CorrelBuffer[i] = sum;
774 if (sum >= maxSum-100 && sum <= maxSum+100){
775 //another max
776 Correlation = i-lastMax;
777 lastMax = i;
778 if (sum > maxSum) maxSum = sum;
779 } else if (sum > maxSum){
780 maxSum=sum;
781 lastMax = i;
782 }
783 }
784 if (Correlation==0){
785 //try again with wider margin
786 for (int i = 0; i < GraphTraceLen - window; i++){
787 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
788 //another max
789 Correlation = i-lastMax;
790 lastMax = i;
791 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
792 }
793 }
794 }
795 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
796
797 if (SaveGrph){
798 GraphTraceLen = GraphTraceLen - window;
799 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
800 RepaintGraphWindow();
801 }
802 return Correlation;
803}
804
805int usage_data_autocorr(void)
806{
807 //print help
808 PrintAndLog("Usage: data autocorr [window] [g]");
809 PrintAndLog("Options: ");
810 PrintAndLog(" h This help");
811 PrintAndLog(" [window] window length for correlation - default = 4000");
812 PrintAndLog(" g save back to GraphBuffer (overwrite)");
813 return 0;
814}
815
816int CmdAutoCorr(const char *Cmd)
817{
818 char cmdp = param_getchar(Cmd, 0);
819 if (cmdp == 'h' || cmdp == 'H')
820 return usage_data_autocorr();
821 int window = 4000; //set default
822 char grph=0;
823 bool updateGrph = FALSE;
824 sscanf(Cmd, "%i %c", &window, &grph);
825
826 if (window >= GraphTraceLen) {
827 PrintAndLog("window must be smaller than trace (%d samples)",
828 GraphTraceLen);
829 return 0;
830 }
831 if (grph == 'g') updateGrph=TRUE;
832 return AutoCorrelate(window, updateGrph, TRUE);
833}
834
835int CmdBitsamples(const char *Cmd)
836{
837 int cnt = 0;
838 uint8_t got[12288];
839
840 GetFromBigBuf(got,sizeof(got),0);
841 WaitForResponse(CMD_ACK,NULL);
842
843 for (int j = 0; j < sizeof(got); j++) {
844 for (int k = 0; k < 8; k++) {
845 if(got[j] & (1 << (7 - k))) {
846 GraphBuffer[cnt++] = 1;
847 } else {
848 GraphBuffer[cnt++] = 0;
849 }
850 }
851 }
852 GraphTraceLen = cnt;
853 RepaintGraphWindow();
854 return 0;
855}
856
857/*
858 * Convert to a bitstream
859 */
860int CmdBitstream(const char *Cmd)
861{
862 int i, j;
863 int bit;
864 int gtl;
865 int clock;
866 int low = 0;
867 int high = 0;
868 int hithigh, hitlow, first;
869
870 /* Detect high and lows and clock */
871 for (i = 0; i < GraphTraceLen; ++i)
872 {
873 if (GraphBuffer[i] > high)
874 high = GraphBuffer[i];
875 else if (GraphBuffer[i] < low)
876 low = GraphBuffer[i];
877 }
878
879 /* Get our clock */
880 clock = GetAskClock(Cmd, high, 1);
881 gtl = ClearGraph(0);
882
883 bit = 0;
884 for (i = 0; i < (int)(gtl / clock); ++i)
885 {
886 hithigh = 0;
887 hitlow = 0;
888 first = 1;
889 /* Find out if we hit both high and low peaks */
890 for (j = 0; j < clock; ++j)
891 {
892 if (GraphBuffer[(i * clock) + j] == high)
893 hithigh = 1;
894 else if (GraphBuffer[(i * clock) + j] == low)
895 hitlow = 1;
896 /* it doesn't count if it's the first part of our read
897 because it's really just trailing from the last sequence */
898 if (first && (hithigh || hitlow))
899 hithigh = hitlow = 0;
900 else
901 first = 0;
902
903 if (hithigh && hitlow)
904 break;
905 }
906
907 /* If we didn't hit both high and low peaks, we had a bit transition */
908 if (!hithigh || !hitlow)
909 bit ^= 1;
910
911 AppendGraph(0, clock, bit);
912 }
913
914 RepaintGraphWindow();
915 return 0;
916}
917
918int CmdBuffClear(const char *Cmd)
919{
920 UsbCommand c = {CMD_BUFF_CLEAR};
921 SendCommand(&c);
922 ClearGraph(true);
923 return 0;
924}
925
926int CmdDec(const char *Cmd)
927{
928 for (int i = 0; i < (GraphTraceLen / 2); ++i)
929 GraphBuffer[i] = GraphBuffer[i * 2];
930 GraphTraceLen /= 2;
931 PrintAndLog("decimated by 2");
932 RepaintGraphWindow();
933 return 0;
934}
935/**
936 * Undecimate - I'd call it 'interpolate', but we'll save that
937 * name until someone does an actual interpolation command, not just
938 * blindly repeating samples
939 * @param Cmd
940 * @return
941 */
942int CmdUndec(const char *Cmd)
943{
944 if(param_getchar(Cmd, 0) == 'h')
945 {
946 PrintAndLog("Usage: data undec [factor]");
947 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
948 PrintAndLog("Options: ");
949 PrintAndLog(" h This help");
950 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
951 PrintAndLog("Example: 'data undec 3'");
952 return 0;
953 }
954
955 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
956 //We have memory, don't we?
957 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
958 uint32_t g_index = 0 ,s_index = 0;
959 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
960 {
961 int count = 0;
962 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
963 swap[s_index+count] = GraphBuffer[g_index];
964 s_index+=count;
965 }
966
967 memcpy(GraphBuffer,swap, s_index * sizeof(int));
968 GraphTraceLen = s_index;
969 RepaintGraphWindow();
970 return 0;
971}
972
973//by marshmellow
974//shift graph zero up or down based on input + or -
975int CmdGraphShiftZero(const char *Cmd)
976{
977
978 int shift=0;
979 //set options from parameters entered with the command
980 sscanf(Cmd, "%i", &shift);
981 int shiftedVal=0;
982 for(int i = 0; i<GraphTraceLen; i++){
983 shiftedVal=GraphBuffer[i]+shift;
984 if (shiftedVal>127)
985 shiftedVal=127;
986 else if (shiftedVal<-127)
987 shiftedVal=-127;
988 GraphBuffer[i]= shiftedVal;
989 }
990 CmdNorm("");
991 return 0;
992}
993
994//by marshmellow
995//use large jumps in read samples to identify edges of waves and then amplify that wave to max
996//similar to dirtheshold, threshold, and askdemod commands
997//takes a threshold length which is the measured length between two samples then determines an edge
998int CmdAskEdgeDetect(const char *Cmd)
999{
1000 int thresLen = 25;
1001 sscanf(Cmd, "%i", &thresLen);
1002 int shift = 127;
1003 int shiftedVal=0;
1004 for(int i = 1; i<GraphTraceLen; i++){
1005 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
1006 shift=127;
1007 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
1008 shift=-127;
1009
1010 shiftedVal=GraphBuffer[i]+shift;
1011
1012 if (shiftedVal>127)
1013 shiftedVal=127;
1014 else if (shiftedVal<-127)
1015 shiftedVal=-127;
1016 GraphBuffer[i-1] = shiftedVal;
1017 }
1018 RepaintGraphWindow();
1019 //CmdNorm("");
1020 return 0;
1021}
1022
1023/* Print our clock rate */
1024// uses data from graphbuffer
1025// adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
1026int CmdDetectClockRate(const char *Cmd)
1027{
1028 char cmdp = param_getchar(Cmd, 0);
1029 if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
1030 PrintAndLog("Usage: data detectclock [modulation]");
1031 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
1032 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
1033 PrintAndLog("");
1034 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
1035 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
1036 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
1037 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
1038 }
1039 int ans=0;
1040 if (cmdp == 'a'){
1041 ans = GetAskClock("", true, false);
1042 } else if (cmdp == 'f'){
1043 ans = GetFskClock("", true, false);
1044 } else if (cmdp == 'n'){
1045 ans = GetNrzClock("", true, false);
1046 } else if (cmdp == 'p'){
1047 ans = GetPskClock("", true, false);
1048 } else {
1049 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
1050 }
1051 return ans;
1052}
1053
1054//by marshmellow
1055//fsk raw demod and print binary
1056//takes 4 arguments - Clock, invert, fchigh, fclow
1057//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1058int FSKrawDemod(const char *Cmd, bool verbose)
1059{
1060 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1061 //set defaults
1062 int rfLen = 0;
1063 int invert = 0;
1064 int fchigh = 0;
1065 int fclow = 0;
1066
1067 //set options from parameters entered with the command
1068 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
1069
1070 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
1071 if (rfLen==1){
1072 invert=1; //if invert option only is used
1073 rfLen = 0;
1074 }
1075 }
1076
1077 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1078 size_t BitLen = getFromGraphBuf(BitStream);
1079 if (BitLen==0) return 0;
1080 //get field clock lengths
1081 uint16_t fcs=0;
1082 uint8_t dummy=0;
1083 if (fchigh==0 || fclow == 0){
1084 fcs = countFC(BitStream, BitLen, &dummy);
1085 if (fcs==0){
1086 fchigh=10;
1087 fclow=8;
1088 }else{
1089 fchigh = (fcs >> 8) & 0xFF;
1090 fclow = fcs & 0xFF;
1091 }
1092 }
1093 //get bit clock length
1094 if (rfLen==0){
1095 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
1096 if (rfLen == 0) rfLen = 50;
1097 }
1098 if (verbose) PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow);
1099 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
1100 if (size>0){
1101 setDemodBuf(BitStream,size,0);
1102
1103 // Now output the bitstream to the scrollback by line of 16 bits
1104 if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size
1105 if (verbose) {
1106 PrintAndLog("FSK decoded bitstream:");
1107 printBitStream(BitStream,size);
1108 }
1109
1110 return 1;
1111 } else{
1112 if (verbose) PrintAndLog("no FSK data found");
1113 }
1114 return 0;
1115}
1116
1117//by marshmellow
1118//fsk raw demod and print binary
1119//takes 4 arguments - Clock, invert, fchigh, fclow
1120//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1121int CmdFSKrawdemod(const char *Cmd)
1122{
1123 char cmdp = param_getchar(Cmd, 0);
1124 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1125 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
1126 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
1127 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
1128 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
1129 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
1130 PrintAndLog("");
1131 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
1132 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
1133 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
1134 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
1135 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
1136 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
1137 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
1138 return 0;
1139 }
1140 return FSKrawDemod(Cmd, TRUE);
1141}
1142
1143//by marshmellow (based on existing demod + holiman's refactor)
1144//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1145//print full HID Prox ID and some bit format details if found
1146int CmdFSKdemodHID(const char *Cmd)
1147{
1148 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1149 uint32_t hi2=0, hi=0, lo=0;
1150
1151 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1152 size_t BitLen = getFromGraphBuf(BitStream);
1153 if (BitLen==0) return 0;
1154 //get binary from fsk wave
1155 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1156 if (idx<0){
1157 if (g_debugMode){
1158 if (idx==-1){
1159 PrintAndLog("DEBUG: Just Noise Detected");
1160 } else if (idx == -2) {
1161 PrintAndLog("DEBUG: Error demoding fsk");
1162 } else if (idx == -3) {
1163 PrintAndLog("DEBUG: Preamble not found");
1164 } else if (idx == -4) {
1165 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1166 } else {
1167 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1168 }
1169 }
1170 return 0;
1171 }
1172 if (hi2==0 && hi==0 && lo==0) {
1173 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1174 return 0;
1175 }
1176 if (hi2 != 0){ //extra large HID tags
1177 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1178 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1179 }
1180 else { //standard HID tags <38 bits
1181 uint8_t fmtLen = 0;
1182 uint32_t fc = 0;
1183 uint32_t cardnum = 0;
1184 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1185 uint32_t lo2=0;
1186 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1187 uint8_t idx3 = 1;
1188 while(lo2>1){ //find last bit set to 1 (format len bit)
1189 lo2=lo2>>1;
1190 idx3++;
1191 }
1192 fmtLen =idx3+19;
1193 fc =0;
1194 cardnum=0;
1195 if(fmtLen==26){
1196 cardnum = (lo>>1)&0xFFFF;
1197 fc = (lo>>17)&0xFF;
1198 }
1199 if(fmtLen==34){
1200 cardnum = (lo>>1)&0xFFFF;
1201 fc= ((hi&1)<<15)|(lo>>17);
1202 }
1203 if(fmtLen==35){
1204 cardnum = (lo>>1)&0xFFFFF;
1205 fc = ((hi&1)<<11)|(lo>>21);
1206 }
1207 }
1208 else { //if bit 38 is not set then 37 bit format is used
1209 fmtLen = 37;
1210 fc = 0;
1211 cardnum = 0;
1212 if(fmtLen == 37){
1213 cardnum = (lo>>1)&0x7FFFF;
1214 fc = ((hi&0xF)<<12)|(lo>>20);
1215 }
1216 }
1217 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1218 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1219 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1220 }
1221 setDemodBuf(BitStream,BitLen,idx);
1222 if (g_debugMode){
1223 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1224 printDemodBuff();
1225 }
1226 return 1;
1227}
1228
1229//by marshmellow
1230//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1231//print full Paradox Prox ID and some bit format details if found
1232int CmdFSKdemodParadox(const char *Cmd)
1233{
1234 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1235 uint32_t hi2=0, hi=0, lo=0;
1236
1237 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1238 size_t BitLen = getFromGraphBuf(BitStream);
1239 if (BitLen==0) return 0;
1240 //get binary from fsk wave
1241 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1242 if (idx<0){
1243 if (g_debugMode){
1244 if (idx==-1){
1245 PrintAndLog("DEBUG: Just Noise Detected");
1246 } else if (idx == -2) {
1247 PrintAndLog("DEBUG: Error demoding fsk");
1248 } else if (idx == -3) {
1249 PrintAndLog("DEBUG: Preamble not found");
1250 } else if (idx == -4) {
1251 PrintAndLog("DEBUG: Error in Manchester data");
1252 } else {
1253 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1254 }
1255 }
1256 return 0;
1257 }
1258 if (hi2==0 && hi==0 && lo==0){
1259 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1260 return 0;
1261 }
1262 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1263 uint32_t cardnum = (lo>>10)&0xFFFF;
1264 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1265 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1266 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1267
1268 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1269 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1270 setDemodBuf(BitStream,BitLen,idx);
1271 if (g_debugMode){
1272 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1273 printDemodBuff();
1274 }
1275 return 1;
1276}
1277
1278//by marshmellow
1279//IO-Prox demod - FSK RF/64 with preamble of 000000001
1280//print ioprox ID and some format details
1281int CmdFSKdemodIO(const char *Cmd)
1282{
1283 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1284 //set defaults
1285 int idx=0;
1286 //something in graphbuffer?
1287 if (GraphTraceLen < 65) {
1288 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1289 return 0;
1290 }
1291 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1292 size_t BitLen = getFromGraphBuf(BitStream);
1293 if (BitLen==0) return 0;
1294
1295 //get binary from fsk wave
1296 idx = IOdemodFSK(BitStream,BitLen);
1297 if (idx<0){
1298 if (g_debugMode){
1299 if (idx==-1){
1300 PrintAndLog("DEBUG: Just Noise Detected");
1301 } else if (idx == -2) {
1302 PrintAndLog("DEBUG: not enough samples");
1303 } else if (idx == -3) {
1304 PrintAndLog("DEBUG: error during fskdemod");
1305 } else if (idx == -4) {
1306 PrintAndLog("DEBUG: Preamble not found");
1307 } else if (idx == -5) {
1308 PrintAndLog("DEBUG: Separator bits not found");
1309 } else {
1310 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1311 }
1312 }
1313 return 0;
1314 }
1315 if (idx==0){
1316 if (g_debugMode==1){
1317 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1318 if (BitLen > 92) printBitStream(BitStream,92);
1319 }
1320 return 0;
1321 }
1322 //Index map
1323 //0 10 20 30 40 50 60
1324 //| | | | | | |
1325 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1326 //-----------------------------------------------------------------------------
1327 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1328 //
1329 //XSF(version)facility:codeone+codetwo (raw)
1330 //Handle the data
1331 if (idx+64>BitLen) {
1332 if (g_debugMode==1) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1333 return 0;
1334 }
1335 PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
1336 PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
1337 PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
1338 PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
1339 PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
1340 PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
1341 PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
1342
1343 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1344 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1345 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1346 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1347 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1348 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);
1349 setDemodBuf(BitStream,64,idx);
1350 if (g_debugMode){
1351 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1352 printDemodBuff();
1353 }
1354 return 1;
1355}
1356
1357//by marshmellow
1358//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1359//print full AWID Prox ID and some bit format details if found
1360int CmdFSKdemodAWID(const char *Cmd)
1361{
1362
1363 //int verbose=1;
1364 //sscanf(Cmd, "%i", &verbose);
1365
1366 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1367 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1368 size_t size = getFromGraphBuf(BitStream);
1369 if (size==0) return 0;
1370
1371 //get binary from fsk wave
1372 int idx = AWIDdemodFSK(BitStream, &size);
1373 if (idx<=0){
1374 if (g_debugMode==1){
1375 if (idx == -1)
1376 PrintAndLog("DEBUG: Error - not enough samples");
1377 else if (idx == -2)
1378 PrintAndLog("DEBUG: Error - only noise found");
1379 else if (idx == -3)
1380 PrintAndLog("DEBUG: Error - problem during FSK demod");
1381 else if (idx == -4)
1382 PrintAndLog("DEBUG: Error - AWID preamble not found");
1383 else if (idx == -5)
1384 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1385 else
1386 PrintAndLog("DEBUG: Error %d",idx);
1387 }
1388 return 0;
1389 }
1390
1391 // Index map
1392 // 0 10 20 30 40 50 60
1393 // | | | | | | |
1394 // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
1395 // -----------------------------------------------------------------------------
1396 // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
1397 // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
1398 // |---26 bit---| |-----117----||-------------142-------------|
1399 // b = format bit len, o = odd parity of last 3 bits
1400 // f = facility code, c = card number
1401 // w = wiegand parity
1402 // (26 bit format shown)
1403
1404 //get raw ID before removing parities
1405 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1406 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1407 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1408 setDemodBuf(BitStream,96,idx);
1409
1410 size = removeParity(BitStream, idx+8, 4, 1, 88);
1411 if (size != 66){
1412 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1413 return 0;
1414 }
1415 // ok valid card found!
1416
1417 // Index map
1418 // 0 10 20 30 40 50 60
1419 // | | | | | | |
1420 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1421 // -----------------------------------------------------------------------------
1422 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1423 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1424 // |26 bit| |-117--| |-----142------|
1425 // b = format bit len, o = odd parity of last 3 bits
1426 // f = facility code, c = card number
1427 // w = wiegand parity
1428 // (26 bit format shown)
1429
1430 uint32_t fc = 0;
1431 uint32_t cardnum = 0;
1432 uint32_t code1 = 0;
1433 uint32_t code2 = 0;
1434 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1435 if (fmtLen==26){
1436 fc = bytebits_to_byte(BitStream+9, 8);
1437 cardnum = bytebits_to_byte(BitStream+17, 16);
1438 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1439 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1440 } else {
1441 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1442 if (fmtLen>32){
1443 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1444 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1445 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1446 } else{
1447 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1448 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1449 }
1450 }
1451 if (g_debugMode){
1452 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1453 printDemodBuff();
1454 }
1455 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1456 return 1;
1457}
1458
1459//by marshmellow
1460//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1461//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1462int CmdFSKdemodPyramid(const char *Cmd)
1463{
1464 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1465 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1466 size_t size = getFromGraphBuf(BitStream);
1467 if (size==0) return 0;
1468
1469 //get binary from fsk wave
1470 int idx = PyramiddemodFSK(BitStream, &size);
1471 if (idx < 0){
1472 if (g_debugMode==1){
1473 if (idx == -5)
1474 PrintAndLog("DEBUG: Error - not enough samples");
1475 else if (idx == -1)
1476 PrintAndLog("DEBUG: Error - only noise found");
1477 else if (idx == -2)
1478 PrintAndLog("DEBUG: Error - problem during FSK demod");
1479 else if (idx == -3)
1480 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1481 else if (idx == -4)
1482 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1483 else
1484 PrintAndLog("DEBUG: Error - idx: %d",idx);
1485 }
1486 return 0;
1487 }
1488 // Index map
1489 // 0 10 20 30 40 50 60
1490 // | | | | | | |
1491 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1492 // -----------------------------------------------------------------------------
1493 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1494 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1495
1496 // 64 70 80 90 100 110 120
1497 // | | | | | | |
1498 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1499 // -----------------------------------------------------------------------------
1500 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1501 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1502 // |---115---||---------71---------|
1503 // s = format start bit, o = odd parity of last 7 bits
1504 // f = facility code, c = card number
1505 // w = wiegand parity, x = extra space for other formats
1506 // p = unknown checksum
1507 // (26 bit format shown)
1508
1509 //get bytes for checksum calc
1510 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1511 uint8_t csBuff[14] = {0x00};
1512 for (uint8_t i = 0; i < 13; i++){
1513 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1514 }
1515 //check checksum calc
1516 //checksum calc thanks to ICEMAN!!
1517 uint32_t checkCS = CRC8Maxim(csBuff,13);
1518
1519 //get raw ID before removing parities
1520 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1521 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1522 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1523 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1524 setDemodBuf(BitStream,128,idx);
1525
1526 size = removeParity(BitStream, idx+8, 8, 1, 120);
1527 if (size != 105){
1528 if (g_debugMode==1)
1529 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1530 return 0;
1531 }
1532
1533 // ok valid card found!
1534
1535 // Index map
1536 // 0 10 20 30 40 50 60 70
1537 // | | | | | | | |
1538 // 01234567890123456789012345678901234567890123456789012345678901234567890
1539 // -----------------------------------------------------------------------
1540 // 00000000000000000000000000000000000000000000000000000000000000000000000
1541 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1542
1543 // 71 80 90 100
1544 // | | | |
1545 // 1 2 34567890 1234567890123456 7 8901234
1546 // ---------------------------------------
1547 // 1 1 01110011 0000000001000110 0 1001010
1548 // s w ffffffff cccccccccccccccc w ppppppp
1549 // |--115-| |------71------|
1550 // s = format start bit, o = odd parity of last 7 bits
1551 // f = facility code, c = card number
1552 // w = wiegand parity, x = extra space for other formats
1553 // p = unknown checksum
1554 // (26 bit format shown)
1555
1556 //find start bit to get fmtLen
1557 int j;
1558 for (j=0; j<size; j++){
1559 if(BitStream[j]) break;
1560 }
1561 uint8_t fmtLen = size-j-8;
1562 uint32_t fc = 0;
1563 uint32_t cardnum = 0;
1564 uint32_t code1 = 0;
1565 //uint32_t code2 = 0;
1566 if (fmtLen==26){
1567 fc = bytebits_to_byte(BitStream+73, 8);
1568 cardnum = bytebits_to_byte(BitStream+81, 16);
1569 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1570 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
1571 } else if (fmtLen==45){
1572 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1573 fc = bytebits_to_byte(BitStream+53, 10);
1574 cardnum = bytebits_to_byte(BitStream+63, 32);
1575 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1576 } else {
1577 cardnum = bytebits_to_byte(BitStream+81, 16);
1578 if (fmtLen>32){
1579 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1580 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1581 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1582 } else{
1583 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1584 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1585 }
1586 }
1587 if (checksum == checkCS)
1588 PrintAndLog("Checksum %02x passed", checksum);
1589 else
1590 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1591
1592 if (g_debugMode){
1593 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1594 printDemodBuff();
1595 }
1596 return 1;
1597}
1598
1599int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating
1600{
1601 static const int LowTone[] = {
1602 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1603 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1604 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1605 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1606 1, 1, 1, 1, 1, -1, -1, -1, -1, -1
1607 };
1608 static const int HighTone[] = {
1609 1, 1, 1, 1, 1, -1, -1, -1, -1,
1610 1, 1, 1, 1, -1, -1, -1, -1,
1611 1, 1, 1, 1, -1, -1, -1, -1,
1612 1, 1, 1, 1, -1, -1, -1, -1,
1613 1, 1, 1, 1, -1, -1, -1, -1,
1614 1, 1, 1, 1, -1, -1, -1, -1, -1,
1615 };
1616
1617 int lowLen = sizeof (LowTone) / sizeof (int);
1618 int highLen = sizeof (HighTone) / sizeof (int);
1619 int convLen = (highLen > lowLen) ? highLen : lowLen;
1620 uint32_t hi = 0, lo = 0;
1621
1622 int i, j;
1623 int minMark = 0, maxMark = 0;
1624
1625 for (i = 0; i < GraphTraceLen - convLen; ++i) {
1626 int lowSum = 0, highSum = 0;
1627
1628 for (j = 0; j < lowLen; ++j) {
1629 lowSum += LowTone[j]*GraphBuffer[i+j];
1630 }
1631 for (j = 0; j < highLen; ++j) {
1632 highSum += HighTone[j] * GraphBuffer[i + j];
1633 }
1634 lowSum = abs(100 * lowSum / lowLen);
1635 highSum = abs(100 * highSum / highLen);
1636 GraphBuffer[i] = (highSum << 16) | lowSum;
1637 }
1638
1639 for(i = 0; i < GraphTraceLen - convLen - 16; ++i) {
1640 int lowTot = 0, highTot = 0;
1641 // 10 and 8 are f_s divided by f_l and f_h, rounded
1642 for (j = 0; j < 10; ++j) {
1643 lowTot += (GraphBuffer[i+j] & 0xffff);
1644 }
1645 for (j = 0; j < 8; j++) {
1646 highTot += (GraphBuffer[i + j] >> 16);
1647 }
1648 GraphBuffer[i] = lowTot - highTot;
1649 if (GraphBuffer[i] > maxMark) maxMark = GraphBuffer[i];
1650 if (GraphBuffer[i] < minMark) minMark = GraphBuffer[i];
1651 }
1652
1653 GraphTraceLen -= (convLen + 16);
1654 RepaintGraphWindow();
1655
1656 // Find bit-sync (3 lo followed by 3 high) (HID ONLY)
1657 int max = 0, maxPos = 0;
1658 for (i = 0; i < 6000; ++i) {
1659 int dec = 0;
1660 for (j = 0; j < 3 * lowLen; ++j) {
1661 dec -= GraphBuffer[i + j];
1662 }
1663 for (; j < 3 * (lowLen + highLen ); ++j) {
1664 dec += GraphBuffer[i + j];
1665 }
1666 if (dec > max) {
1667 max = dec;
1668 maxPos = i;
1669 }
1670 }
1671
1672 // place start of bit sync marker in graph
1673 GraphBuffer[maxPos] = maxMark;
1674 GraphBuffer[maxPos + 1] = minMark;
1675
1676 maxPos += j;
1677
1678 // place end of bit sync marker in graph
1679 GraphBuffer[maxPos] = maxMark;
1680 GraphBuffer[maxPos+1] = minMark;
1681
1682 PrintAndLog("actual data bits start at sample %d", maxPos);
1683 PrintAndLog("length %d/%d", highLen, lowLen);
1684
1685 uint8_t bits[46] = {0x00};
1686
1687 // find bit pairs and manchester decode them
1688 for (i = 0; i < arraylen(bits) - 1; ++i) {
1689 int dec = 0;
1690 for (j = 0; j < lowLen; ++j) {
1691 dec -= GraphBuffer[maxPos + j];
1692 }
1693 for (; j < lowLen + highLen; ++j) {
1694 dec += GraphBuffer[maxPos + j];
1695 }
1696 maxPos += j;
1697 // place inter bit marker in graph
1698 GraphBuffer[maxPos] = maxMark;
1699 GraphBuffer[maxPos + 1] = minMark;
1700
1701 // hi and lo form a 64 bit pair
1702 hi = (hi << 1) | (lo >> 31);
1703 lo = (lo << 1);
1704 // store decoded bit as binary (in hi/lo) and text (in bits[])
1705 if(dec < 0) {
1706 bits[i] = '1';
1707 lo |= 1;
1708 } else {
1709 bits[i] = '0';
1710 }
1711 }
1712 PrintAndLog("bits: '%s'", bits);
1713 PrintAndLog("hex: %08x %08x", hi, lo);
1714 return 0;
1715}
1716
1717//by marshmellow
1718//attempt to psk1 demod graph buffer
1719int PSKDemod(const char *Cmd, bool verbose)
1720{
1721 int invert=0;
1722 int clk=0;
1723 int maxErr=100;
1724 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1725 if (clk==1){
1726 invert=1;
1727 clk=0;
1728 }
1729 if (invert != 0 && invert != 1) {
1730 if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
1731 return 0;
1732 }
1733 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1734 size_t BitLen = getFromGraphBuf(BitStream);
1735 if (BitLen==0) return -1;
1736 uint8_t carrier=countPSK_FC(BitStream, BitLen);
1737 if (carrier!=2 && carrier!=4 && carrier!=8){
1738 //invalid carrier
1739 return 0;
1740 }
1741 int errCnt=0;
1742 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1743 if (errCnt > maxErr){
1744 if (g_debugMode==1 && verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1745 return 0;
1746 }
1747 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1748 if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1749 return 0;
1750 }
1751 if (verbose){
1752 PrintAndLog("Tried PSK Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1753 if (errCnt>0){
1754 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
1755 }
1756 }
1757 //prime demod buffer for output
1758 setDemodBuf(BitStream,BitLen,0);
1759 return 1;
1760}
1761
1762// Indala 26 bit decode
1763// by marshmellow
1764// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1765int CmdIndalaDecode(const char *Cmd)
1766{
1767 int ans;
1768 if (strlen(Cmd)>0){
1769 ans = PSKDemod(Cmd, 0);
1770 } else{ //default to RF/32
1771 ans = PSKDemod("32", 0);
1772 }
1773
1774 if (!ans){
1775 if (g_debugMode==1)
1776 PrintAndLog("Error1: %d",ans);
1777 return 0;
1778 }
1779 uint8_t invert=0;
1780 ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
1781 if (ans < 1) {
1782 if (g_debugMode==1)
1783 PrintAndLog("Error2: %d",ans);
1784 return -1;
1785 }
1786 char showbits[251]={0x00};
1787 if (invert)
1788 if (g_debugMode==1)
1789 PrintAndLog("Had to invert bits");
1790
1791 //convert UID to HEX
1792 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1793 int idx;
1794 uid1=0;
1795 uid2=0;
1796 PrintAndLog("BitLen: %d",DemodBufferLen);
1797 if (DemodBufferLen==64){
1798 for( idx=0; idx<64; idx++) {
1799 uid1=(uid1<<1)|(uid2>>31);
1800 if (DemodBuffer[idx] == 0) {
1801 uid2=(uid2<<1)|0;
1802 showbits[idx]='0';
1803 } else {
1804 uid2=(uid2<<1)|1;
1805 showbits[idx]='1';
1806 }
1807 }
1808 showbits[idx]='\0';
1809 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1810 }
1811 else {
1812 uid3=0;
1813 uid4=0;
1814 uid5=0;
1815 uid6=0;
1816 uid7=0;
1817 for( idx=0; idx<DemodBufferLen; idx++) {
1818 uid1=(uid1<<1)|(uid2>>31);
1819 uid2=(uid2<<1)|(uid3>>31);
1820 uid3=(uid3<<1)|(uid4>>31);
1821 uid4=(uid4<<1)|(uid5>>31);
1822 uid5=(uid5<<1)|(uid6>>31);
1823 uid6=(uid6<<1)|(uid7>>31);
1824 if (DemodBuffer[idx] == 0) {
1825 uid7=(uid7<<1)|0;
1826 showbits[idx]='0';
1827 }
1828 else {
1829 uid7=(uid7<<1)|1;
1830 showbits[idx]='1';
1831 }
1832 }
1833 showbits[idx]='\0';
1834 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1835 }
1836 if (g_debugMode){
1837 PrintAndLog("DEBUG: printing demodbuffer:");
1838 printDemodBuff();
1839 }
1840 return 1;
1841}
1842
1843// by marshmellow
1844// takes 3 arguments - clock, invert, maxErr as integers
1845// attempts to demodulate nrz only
1846// prints binary found and saves in demodbuffer for further commands
1847
1848int NRZrawDemod(const char *Cmd, bool verbose)
1849{
1850 int invert=0;
1851 int clk=0;
1852 int maxErr=100;
1853 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1854 if (clk==1){
1855 invert=1;
1856 clk=0;
1857 }
1858 if (invert != 0 && invert != 1) {
1859 PrintAndLog("Invalid argument: %s", Cmd);
1860 return 0;
1861 }
1862 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1863 size_t BitLen = getFromGraphBuf(BitStream);
1864 if (BitLen==0) return 0;
1865 int errCnt=0;
1866 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1867 if (errCnt > maxErr){
1868 if (g_debugMode==1 && verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1869 return 0;
1870 }
1871 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1872 if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1873 return 0;
1874 }
1875 if (verbose)
1876 PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1877 //prime demod buffer for output
1878 setDemodBuf(BitStream,BitLen,0);
1879
1880 if (errCnt>0 && verbose){
1881 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
1882 }
1883 if (verbose) {
1884 PrintAndLog("NRZ demoded bitstream:");
1885 // Now output the bitstream to the scrollback by line of 16 bits
1886 printDemodBuff();
1887 }
1888 return 1;
1889}
1890
1891int CmdNRZrawDemod(const char *Cmd)
1892{
1893 char cmdp = param_getchar(Cmd, 0);
1894 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1895 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1896 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1897 PrintAndLog(" <invert>, 1 for invert output");
1898 PrintAndLog(" [set maximum allowed errors], default = 100.");
1899 PrintAndLog("");
1900 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1901 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1902 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1903 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1904 PrintAndLog(" : data rawdemod nr 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1905 return 0;
1906 }
1907 return NRZrawDemod(Cmd, TRUE);
1908}
1909
1910// by marshmellow
1911// takes 3 arguments - clock, invert, maxErr as integers
1912// attempts to demodulate psk only
1913// prints binary found and saves in demodbuffer for further commands
1914int CmdPSK1rawDemod(const char *Cmd)
1915{
1916 int ans;
1917 char cmdp = param_getchar(Cmd, 0);
1918 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1919 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1920 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1921 PrintAndLog(" <invert>, 1 for invert output");
1922 PrintAndLog(" [set maximum allowed errors], default = 100.");
1923 PrintAndLog("");
1924 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1925 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1926 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1927 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1928 PrintAndLog(" : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1929 return 0;
1930 }
1931 ans = PSKDemod(Cmd, TRUE);
1932 //output
1933 if (!ans){
1934 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1935 return 0;
1936 }
1937
1938 PrintAndLog("PSK demoded bitstream:");
1939 // Now output the bitstream to the scrollback by line of 16 bits
1940 printDemodBuff();
1941 return 1;
1942}
1943
1944// by marshmellow
1945// takes same args as cmdpsk1rawdemod
1946int CmdPSK2rawDemod(const char *Cmd)
1947{
1948 int ans=0;
1949 char cmdp = param_getchar(Cmd, 0);
1950 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1951 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1952 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1953 PrintAndLog(" <invert>, 1 for invert output");
1954 PrintAndLog(" [set maximum allowed errors], default = 100.");
1955 PrintAndLog("");
1956 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1957 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1958 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1959 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1960 PrintAndLog(" : data rawdemod p2 64 1 0 = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
1961 return 0;
1962 }
1963 ans=PSKDemod(Cmd, TRUE);
1964 if (!ans){
1965 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1966 return 0;
1967 }
1968 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1969 PrintAndLog("PSK2 demoded bitstream:");
1970 // Now output the bitstream to the scrollback by line of 16 bits
1971 printDemodBuff();
1972 return 1;
1973}
1974
1975// by marshmellow - combines all raw demod functions into one menu command
1976int CmdRawDemod(const char *Cmd)
1977{
1978 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1979
1980 if (strlen(Cmd) > 14 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1981 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1982 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1983 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1984 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1985 PrintAndLog(" <options> see specific modulation help for optional parameters");
1986 PrintAndLog("");
1987 PrintAndLog(" sample: data rawdemod fs h = print help for ask/raw demod");
1988 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1989 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1990 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1991 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1992 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1993 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1994 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1995 return 0;
1996 }
1997 char cmdp2 = Cmd[1];
1998 int ans = 0;
1999 if (cmdp == 'f' && cmdp2 == 's'){
2000 ans = CmdFSKrawdemod(Cmd+3);
2001 } else if(cmdp == 'a' && cmdp2 == 'b'){
2002 ans = Cmdaskbiphdemod(Cmd+3);
2003 } else if(cmdp == 'a' && cmdp2 == 'm'){
2004 ans = Cmdaskmandemod(Cmd+3);
2005 } else if(cmdp == 'a' && cmdp2 == 'r'){
2006 ans = Cmdaskrawdemod(Cmd+3);
2007 } else if(cmdp == 'n' && cmdp2 == 'r'){
2008 ans = CmdNRZrawDemod(Cmd+3);
2009 } else if(cmdp == 'p' && cmdp2 == '1'){
2010 ans = CmdPSK1rawDemod(Cmd+3);
2011 } else if(cmdp == 'p' && cmdp2 == '2'){
2012 ans = CmdPSK2rawDemod(Cmd+3);
2013 } else {
2014 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
2015 }
2016 return ans;
2017}
2018
2019int CmdGrid(const char *Cmd)
2020{
2021 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
2022 PlotGridXdefault= PlotGridX;
2023 PlotGridYdefault= PlotGridY;
2024 RepaintGraphWindow();
2025 return 0;
2026}
2027
2028int CmdHexsamples(const char *Cmd)
2029{
2030 int i, j;
2031 int requested = 0;
2032 int offset = 0;
2033 char string_buf[25];
2034 char* string_ptr = string_buf;
2035 uint8_t got[BIGBUF_SIZE];
2036
2037 sscanf(Cmd, "%i %i", &requested, &offset);
2038
2039 /* if no args send something */
2040 if (requested == 0) {
2041 requested = 8;
2042 }
2043 if (offset + requested > sizeof(got)) {
2044 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
2045 return 0;
2046 }
2047
2048 GetFromBigBuf(got,requested,offset);
2049 WaitForResponse(CMD_ACK,NULL);
2050
2051 i = 0;
2052 for (j = 0; j < requested; j++) {
2053 i++;
2054 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
2055 if (i == 8) {
2056 *(string_ptr - 1) = '\0'; // remove the trailing space
2057 PrintAndLog("%s", string_buf);
2058 string_buf[0] = '\0';
2059 string_ptr = string_buf;
2060 i = 0;
2061 }
2062 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
2063 *(string_ptr - 1) = '\0';
2064 PrintAndLog("%s", string_buf);
2065 string_buf[0] = '\0';
2066 }
2067 }
2068 return 0;
2069}
2070
2071int CmdHide(const char *Cmd)
2072{
2073 HideGraphWindow();
2074 return 0;
2075}
2076
2077//zero mean GraphBuffer
2078int CmdHpf(const char *Cmd)
2079{
2080 int i;
2081 int accum = 0;
2082
2083 for (i = 10; i < GraphTraceLen; ++i)
2084 accum += GraphBuffer[i];
2085 accum /= (GraphTraceLen - 10);
2086 for (i = 0; i < GraphTraceLen; ++i)
2087 GraphBuffer[i] -= accum;
2088
2089 RepaintGraphWindow();
2090 return 0;
2091}
2092typedef struct {
2093 uint8_t * buffer;
2094 uint32_t numbits;
2095 uint32_t position;
2096}BitstreamOut;
2097
2098bool _headBit( BitstreamOut *stream)
2099{
2100 int bytepos = stream->position >> 3; // divide by 8
2101 int bitpos = (stream->position++) & 7; // mask out 00000111
2102 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
2103}
2104
2105uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
2106{
2107 int i;
2108 uint8_t val = 0;
2109 for(i =0 ; i < bits_per_sample; i++)
2110 {
2111 val |= (_headBit(b) << (7-i));
2112 }
2113 return val;
2114}
2115
2116int CmdSamples(const char *Cmd)
2117{
2118 //If we get all but the last byte in bigbuf,
2119 // we don't have to worry about remaining trash
2120 // in the last byte in case the bits-per-sample
2121 // does not line up on byte boundaries
2122 uint8_t got[BIGBUF_SIZE-1] = { 0 };
2123
2124 int n = strtol(Cmd, NULL, 0);
2125 if (n == 0)
2126 n = sizeof(got);
2127
2128 if (n > sizeof(got))
2129 n = sizeof(got);
2130
2131 PrintAndLog("Reading %d bytes from device memory\n", n);
2132 GetFromBigBuf(got,n,0);
2133 PrintAndLog("Data fetched");
2134 UsbCommand response;
2135 WaitForResponse(CMD_ACK, &response);
2136 uint8_t bits_per_sample = 8;
2137
2138 //Old devices without this feature would send 0 at arg[0]
2139 if(response.arg[0] > 0)
2140 {
2141 sample_config *sc = (sample_config *) response.d.asBytes;
2142 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
2143 , sc->decimation);
2144 bits_per_sample = sc->bits_per_sample;
2145 }
2146 if(bits_per_sample < 8)
2147 {
2148 PrintAndLog("Unpacking...");
2149 BitstreamOut bout = { got, bits_per_sample * n, 0};
2150 int j =0;
2151 for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) {
2152 uint8_t sample = getByte(bits_per_sample, &bout);
2153 GraphBuffer[j] = ((int) sample )- 128;
2154 }
2155 GraphTraceLen = j;
2156 PrintAndLog("Unpacked %d samples" , j );
2157 }else
2158 {
2159 for (int j = 0; j < n; j++) {
2160 GraphBuffer[j] = ((int)got[j]) - 128;
2161 }
2162 GraphTraceLen = n;
2163 }
2164
2165 RepaintGraphWindow();
2166 return 0;
2167}
2168
2169int CmdTuneSamples(const char *Cmd)
2170{
2171 int timeout = 0;
2172 printf("\nMeasuring antenna characteristics, please wait...");
2173
2174 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
2175 SendCommand(&c);
2176
2177 UsbCommand resp;
2178 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2179 timeout++;
2180 printf(".");
2181 if (timeout > 7) {
2182 PrintAndLog("\nNo response from Proxmark. Aborting...");
2183 return 1;
2184 }
2185 }
2186
2187 int peakv, peakf;
2188 int vLf125, vLf134, vHf;
2189 vLf125 = resp.arg[0] & 0xffff;
2190 vLf134 = resp.arg[0] >> 16;
2191 vHf = resp.arg[1] & 0xffff;;
2192 peakf = resp.arg[2] & 0xffff;
2193 peakv = resp.arg[2] >> 16;
2194 PrintAndLog("");
2195 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2196 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2197 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2198 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2199
2200#define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2201#define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2202#define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2203#define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2204
2205 if (peakv < LF_UNUSABLE_V)
2206 PrintAndLog("# Your LF antenna is unusable.");
2207 else if (peakv < LF_MARGINAL_V)
2208 PrintAndLog("# Your LF antenna is marginal.");
2209 if (vHf < HF_UNUSABLE_V)
2210 PrintAndLog("# Your HF antenna is unusable.");
2211 else if (vHf < HF_MARGINAL_V)
2212 PrintAndLog("# Your HF antenna is marginal.");
2213
2214 if (peakv >= LF_UNUSABLE_V) {
2215 for (int i = 0; i < 256; i++) {
2216 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2217 }
2218 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2219 PrintAndLog("\n");
2220 GraphTraceLen = 256;
2221 ShowGraphWindow();
2222 RepaintGraphWindow();
2223 }
2224
2225 return 0;
2226}
2227
2228
2229int CmdLoad(const char *Cmd)
2230{
2231 char filename[FILE_PATH_SIZE] = {0x00};
2232 int len = 0;
2233
2234 len = strlen(Cmd);
2235 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2236 memcpy(filename, Cmd, len);
2237
2238 FILE *f = fopen(filename, "r");
2239 if (!f) {
2240 PrintAndLog("couldn't open '%s'", filename);
2241 return 0;
2242 }
2243
2244 GraphTraceLen = 0;
2245 char line[80];
2246 while (fgets(line, sizeof (line), f)) {
2247 GraphBuffer[GraphTraceLen] = atoi(line);
2248 GraphTraceLen++;
2249 }
2250 fclose(f);
2251 PrintAndLog("loaded %d samples", GraphTraceLen);
2252 RepaintGraphWindow();
2253 return 0;
2254}
2255
2256int CmdLtrim(const char *Cmd)
2257{
2258 int ds = atoi(Cmd);
2259
2260 for (int i = ds; i < GraphTraceLen; ++i)
2261 GraphBuffer[i-ds] = GraphBuffer[i];
2262 GraphTraceLen -= ds;
2263
2264 RepaintGraphWindow();
2265 return 0;
2266}
2267
2268// trim graph to input argument length
2269int CmdRtrim(const char *Cmd)
2270{
2271 int ds = atoi(Cmd);
2272
2273 GraphTraceLen = ds;
2274
2275 RepaintGraphWindow();
2276 return 0;
2277}
2278
2279/*
2280 * Manchester demodulate a bitstream. The bitstream needs to be already in
2281 * the GraphBuffer as 0 and 1 values
2282 *
2283 * Give the clock rate as argument in order to help the sync - the algorithm
2284 * resyncs at each pulse anyway.
2285 *
2286 * Not optimized by any means, this is the 1st time I'm writing this type of
2287 * routine, feel free to improve...
2288 *
2289 * 1st argument: clock rate (as number of samples per clock rate)
2290 * Typical values can be 64, 32, 128...
2291 */
2292int CmdManchesterDemod(const char *Cmd)
2293{
2294 int i, j, invert= 0;
2295 int bit;
2296 int clock;
2297 int lastval = 0;
2298 int low = 0;
2299 int high = 0;
2300 int hithigh, hitlow, first;
2301 int lc = 0;
2302 int bitidx = 0;
2303 int bit2idx = 0;
2304 int warnings = 0;
2305
2306 /* check if we're inverting output */
2307 if (*Cmd == 'i')
2308 {
2309 PrintAndLog("Inverting output");
2310 invert = 1;
2311 ++Cmd;
2312 do
2313 ++Cmd;
2314 while(*Cmd == ' '); // in case a 2nd argument was given
2315 }
2316
2317 /* Holds the decoded bitstream: each clock period contains 2 bits */
2318 /* later simplified to 1 bit after manchester decoding. */
2319 /* Add 10 bits to allow for noisy / uncertain traces without aborting */
2320 /* int BitStream[GraphTraceLen*2/clock+10]; */
2321
2322 /* But it does not work if compiling on WIndows: therefore we just allocate a */
2323 /* large array */
2324 uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0};
2325
2326 /* Detect high and lows */
2327 for (i = 0; i < GraphTraceLen; i++)
2328 {
2329 if (GraphBuffer[i] > high)
2330 high = GraphBuffer[i];
2331 else if (GraphBuffer[i] < low)
2332 low = GraphBuffer[i];
2333 }
2334
2335 /* Get our clock */
2336 clock = GetAskClock(Cmd, high, 1);
2337
2338 int tolerance = clock/4;
2339
2340 /* Detect first transition */
2341 /* Lo-Hi (arbitrary) */
2342 /* skip to the first high */
2343 for (i= 0; i < GraphTraceLen; i++)
2344 if (GraphBuffer[i] == high)
2345 break;
2346 /* now look for the first low */
2347 for (; i < GraphTraceLen; i++)
2348 {
2349 if (GraphBuffer[i] == low)
2350 {
2351 lastval = i;
2352 break;
2353 }
2354 }
2355
2356 /* If we're not working with 1/0s, demod based off clock */
2357 if (high != 1)
2358 {
2359 bit = 0; /* We assume the 1st bit is zero, it may not be
2360 * the case: this routine (I think) has an init problem.
2361 * Ed.
2362 */
2363 for (; i < (int)(GraphTraceLen / clock); i++)
2364 {
2365 hithigh = 0;
2366 hitlow = 0;
2367 first = 1;
2368
2369 /* Find out if we hit both high and low peaks */
2370 for (j = 0; j < clock; j++)
2371 {
2372 if (GraphBuffer[(i * clock) + j] == high)
2373 hithigh = 1;
2374 else if (GraphBuffer[(i * clock) + j] == low)
2375 hitlow = 1;
2376
2377 /* it doesn't count if it's the first part of our read
2378 because it's really just trailing from the last sequence */
2379 if (first && (hithigh || hitlow))
2380 hithigh = hitlow = 0;
2381 else
2382 first = 0;
2383
2384 if (hithigh && hitlow)
2385 break;
2386 }
2387
2388 /* If we didn't hit both high and low peaks, we had a bit transition */
2389 if (!hithigh || !hitlow)
2390 bit ^= 1;
2391
2392 BitStream[bit2idx++] = bit ^ invert;
2393 }
2394 }
2395
2396 /* standard 1/0 bitstream */
2397 else
2398 {
2399
2400 /* Then detect duration between 2 successive transitions */
2401 for (bitidx = 1; i < GraphTraceLen; i++)
2402 {
2403 if (GraphBuffer[i-1] != GraphBuffer[i])
2404 {
2405 lc = i-lastval;
2406 lastval = i;
2407
2408 // Error check: if bitidx becomes too large, we do not
2409 // have a Manchester encoded bitstream or the clock is really
2410 // wrong!
2411 if (bitidx > (GraphTraceLen*2/clock+8) ) {
2412 PrintAndLog("Error: the clock you gave is probably wrong, aborting.");
2413 return 0;
2414 }
2415 // Then switch depending on lc length:
2416 // Tolerance is 1/4 of clock rate (arbitrary)
2417 if (abs(lc-clock/2) < tolerance) {
2418 // Short pulse : either "1" or "0"
2419 BitStream[bitidx++]=GraphBuffer[i-1];
2420 } else if (abs(lc-clock) < tolerance) {
2421 // Long pulse: either "11" or "00"
2422 BitStream[bitidx++]=GraphBuffer[i-1];
2423 BitStream[bitidx++]=GraphBuffer[i-1];
2424 } else {
2425 // Error
2426 warnings++;
2427 PrintAndLog("Warning: Manchester decode error for pulse width detection.");
2428 PrintAndLog("(too many of those messages mean either the stream is not Manchester encoded, or clock is wrong)");
2429
2430 if (warnings > 10)
2431 {
2432 PrintAndLog("Error: too many detection errors, aborting.");
2433 return 0;
2434 }
2435 }
2436 }
2437 }
2438
2439 // At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream
2440 // Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful
2441 // to stop output at the final bitidx2 value, not bitidx
2442 for (i = 0; i < bitidx; i += 2) {
2443 if ((BitStream[i] == 0) && (BitStream[i+1] == 1)) {
2444 BitStream[bit2idx++] = 1 ^ invert;
2445 } else if ((BitStream[i] == 1) && (BitStream[i+1] == 0)) {
2446 BitStream[bit2idx++] = 0 ^ invert;
2447 } else {
2448 // We cannot end up in this state, this means we are unsynchronized,
2449 // move up 1 bit:
2450 i++;
2451 warnings++;
2452 PrintAndLog("Unsynchronized, resync...");
2453 PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)");
2454
2455 if (warnings > 10)
2456 {
2457 PrintAndLog("Error: too many decode errors, aborting.");
2458 return 0;
2459 }
2460 }
2461 }
2462 }
2463
2464 PrintAndLog("Manchester decoded bitstream");
2465 // Now output the bitstream to the scrollback by line of 16 bits
2466 for (i = 0; i < (bit2idx-16); i+=16) {
2467 PrintAndLog("%i %i %i %i %i %i %i %i %i %i %i %i %i %i %i %i",
2468 BitStream[i],
2469 BitStream[i+1],
2470 BitStream[i+2],
2471 BitStream[i+3],
2472 BitStream[i+4],
2473 BitStream[i+5],
2474 BitStream[i+6],
2475 BitStream[i+7],
2476 BitStream[i+8],
2477 BitStream[i+9],
2478 BitStream[i+10],
2479 BitStream[i+11],
2480 BitStream[i+12],
2481 BitStream[i+13],
2482 BitStream[i+14],
2483 BitStream[i+15]);
2484 }
2485 return 0;
2486}
2487
2488/* Modulate our data into manchester */
2489int CmdManchesterMod(const char *Cmd)
2490{
2491 int i, j;
2492 int clock;
2493 int bit, lastbit, wave;
2494
2495 /* Get our clock */
2496 clock = GetAskClock(Cmd, 0, 1);
2497
2498 wave = 0;
2499 lastbit = 1;
2500 for (i = 0; i < (int)(GraphTraceLen / clock); i++)
2501 {
2502 bit = GraphBuffer[i * clock] ^ 1;
2503
2504 for (j = 0; j < (int)(clock/2); j++)
2505 GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave;
2506 for (j = (int)(clock/2); j < clock; j++)
2507 GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave ^ 1;
2508
2509 /* Keep track of how we start our wave and if we changed or not this time */
2510 wave ^= bit ^ lastbit;
2511 lastbit = bit;
2512 }
2513
2514 RepaintGraphWindow();
2515 return 0;
2516}
2517
2518int CmdNorm(const char *Cmd)
2519{
2520 int i;
2521 int max = INT_MIN, min = INT_MAX;
2522
2523 for (i = 10; i < GraphTraceLen; ++i) {
2524 if (GraphBuffer[i] > max)
2525 max = GraphBuffer[i];
2526 if (GraphBuffer[i] < min)
2527 min = GraphBuffer[i];
2528 }
2529
2530 if (max != min) {
2531 for (i = 0; i < GraphTraceLen; ++i) {
2532 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2533 (max - min);
2534 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2535 }
2536 }
2537 RepaintGraphWindow();
2538 return 0;
2539}
2540
2541int CmdPlot(const char *Cmd)
2542{
2543 ShowGraphWindow();
2544 return 0;
2545}
2546
2547int CmdSave(const char *Cmd)
2548{
2549 char filename[FILE_PATH_SIZE] = {0x00};
2550 int len = 0;
2551
2552 len = strlen(Cmd);
2553 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2554 memcpy(filename, Cmd, len);
2555
2556
2557 FILE *f = fopen(filename, "w");
2558 if(!f) {
2559 PrintAndLog("couldn't open '%s'", filename);
2560 return 0;
2561 }
2562 int i;
2563 for (i = 0; i < GraphTraceLen; i++) {
2564 fprintf(f, "%d\n", GraphBuffer[i]);
2565 }
2566 fclose(f);
2567 PrintAndLog("saved to '%s'", Cmd);
2568 return 0;
2569}
2570
2571int CmdScale(const char *Cmd)
2572{
2573 CursorScaleFactor = atoi(Cmd);
2574 if (CursorScaleFactor == 0) {
2575 PrintAndLog("bad, can't have zero scale");
2576 CursorScaleFactor = 1;
2577 }
2578 RepaintGraphWindow();
2579 return 0;
2580}
2581
2582int CmdThreshold(const char *Cmd)
2583{
2584 int threshold = atoi(Cmd);
2585
2586 for (int i = 0; i < GraphTraceLen; ++i) {
2587 if (GraphBuffer[i] >= threshold)
2588 GraphBuffer[i] = 1;
2589 else
2590 GraphBuffer[i] = -1;
2591 }
2592 RepaintGraphWindow();
2593 return 0;
2594}
2595
2596int CmdDirectionalThreshold(const char *Cmd)
2597{
2598 int8_t upThres = param_get8(Cmd, 0);
2599 int8_t downThres = param_get8(Cmd, 1);
2600
2601 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2602
2603 int lastValue = GraphBuffer[0];
2604 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2605
2606 for (int i = 1; i < GraphTraceLen; ++i) {
2607 // Apply first threshold to samples heading up
2608 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2609 {
2610 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2611 GraphBuffer[i] = 1;
2612 }
2613 // Apply second threshold to samples heading down
2614 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2615 {
2616 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2617 GraphBuffer[i] = -1;
2618 }
2619 else
2620 {
2621 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2622 GraphBuffer[i] = GraphBuffer[i-1];
2623
2624 }
2625 }
2626 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2627 RepaintGraphWindow();
2628 return 0;
2629}
2630
2631int CmdZerocrossings(const char *Cmd)
2632{
2633 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2634 CmdHpf("");
2635
2636 int sign = 1;
2637 int zc = 0;
2638 int lastZc = 0;
2639
2640 for (int i = 0; i < GraphTraceLen; ++i) {
2641 if (GraphBuffer[i] * sign >= 0) {
2642 // No change in sign, reproduce the previous sample count.
2643 zc++;
2644 GraphBuffer[i] = lastZc;
2645 } else {
2646 // Change in sign, reset the sample count.
2647 sign = -sign;
2648 GraphBuffer[i] = lastZc;
2649 if (sign > 0) {
2650 lastZc = zc;
2651 zc = 0;
2652 }
2653 }
2654 }
2655
2656 RepaintGraphWindow();
2657 return 0;
2658}
2659
2660static command_t CommandTable[] =
2661{
2662 {"help", CmdHelp, 1, "This help"},
2663 {"amp", CmdAmp, 1, "Amplify peaks"},
2664 //{"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"},
2665 {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using length of sample differences to detect the edge of a wave (default = 25)"},
2666 {"askem410xdemod",CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2667 {"askgproxiidemod",CmdG_Prox_II_Demod,1, "Demodulate a G Prox II tag from GraphBuffer"},
2668 //{"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional)"},
2669 //{"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK tags and output bin (args optional)"},
2670 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2671 {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2672 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2673 //{"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"},
2674 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2675 {"dec", CmdDec, 1, "Decimate samples"},
2676 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2677 //{"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"},
2678 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2679 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2680 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2681 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2682 {"fskpyramiddemod",CmdFSKdemodPyramid,1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2683 {"fskparadoxdemod",CmdFSKdemodParadox,1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2684 //{"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to bin (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"},
2685 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2686 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2687 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2688 {"hide", CmdHide, 1, "Hide graph window"},
2689 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2690 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2691 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2692 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2693 //{"mandemod", CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"},
2694 {"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream in DemodBuffer"},
2695 {"manmod", CmdManchesterMod, 1, "[clock rate] -- Manchester modulate a binary stream"},
2696 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2697 //{"nrzdetectclock",CmdDetectNRZClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
2698 //{"nrzrawdemod", CmdNRZrawDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate nrz tags and output binary (args optional)"},
2699 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2700 //{"pskdetectclock",CmdDetectPSKClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
2701 {"printdemodbuffer",CmdPrintDemodBuff,1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"},
2702 {"pskindalademod",CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2703 //{"psk1rawdemod", CmdPSK1rawDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk1 tags and output binary (args optional)"},
2704 //{"psk2rawdemod", CmdPSK2rawDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk2 tags and output binary (args optional)"},
2705 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2706 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2707 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2708 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2709 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2710 {"shiftgraphzero",CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2711 //{"threshold", CmdThreshold, 1, "<threshold> -- Maximize/minimize every value in the graph window depending on threshold"},
2712 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2713 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2714 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2715 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2716 {NULL, NULL, 0, NULL}
2717};
2718
2719int CmdData(const char *Cmd)
2720{
2721 CmdsParse(CommandTable, Cmd);
2722 return 0;
2723}
2724
2725int CmdHelp(const char *Cmd)
2726{
2727 CmdsHelp(CommandTable);
2728 return 0;
2729}
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