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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 #include "crc16.h"
27
28 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
29 uint8_t g_debugMode;
30 size_t DemodBufferLen;
31 static int CmdHelp(const char *Cmd);
32
33 //set the demod buffer with given array of binary (one bit per byte)
34 //by marshmellow
35 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
36 {
37 if (buff == NULL)
38 return;
39
40 if ( size >= MAX_DEMOD_BUF_LEN)
41 size = MAX_DEMOD_BUF_LEN;
42
43 size_t i = 0;
44 for (; i < size; i++){
45 DemodBuffer[i]=buff[startIdx++];
46 }
47 DemodBufferLen=size;
48 return;
49 }
50
51 int CmdSetDebugMode(const char *Cmd)
52 {
53 int demod=0;
54 sscanf(Cmd, "%i", &demod);
55 g_debugMode=(uint8_t)demod;
56 return 1;
57 }
58
59 int usage_data_printdemodbuf(){
60 PrintAndLog("Usage: data printdemodbuffer x o <offset>");
61 PrintAndLog("Options: ");
62 PrintAndLog(" h This help");
63 PrintAndLog(" x output in hex (omit for binary output)");
64 PrintAndLog(" o <offset> enter offset in # of bits");
65 return 0;
66 }
67
68 //by marshmellow
69 void printDemodBuff(void)
70 {
71 int bitLen = DemodBufferLen;
72 if (bitLen<1) {
73 PrintAndLog("no bits found in demod buffer");
74 return;
75 }
76 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
77
78 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
79 PrintAndLog("%s",bin);
80
81 return;
82 }
83
84 int CmdPrintDemodBuff(const char *Cmd)
85 {
86 char hex[512]={0x00};
87 bool hexMode = false;
88 bool errors = false;
89 uint8_t offset = 0;
90 char cmdp = 0;
91 while(param_getchar(Cmd, cmdp) != 0x00)
92 {
93 switch(param_getchar(Cmd, cmdp))
94 {
95 case 'h':
96 case 'H':
97 return usage_data_printdemodbuf();
98 case 'x':
99 case 'X':
100 hexMode = true;
101 cmdp++;
102 break;
103 case 'o':
104 case 'O':
105 offset = param_get8(Cmd, cmdp+1);
106 if (!offset) errors = true;
107 cmdp += 2;
108 break;
109 default:
110 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
111 errors = true;
112 break;
113 }
114 if(errors) break;
115 }
116 //Validations
117 if(errors) return usage_data_printdemodbuf();
118
119 int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
120
121 if (hexMode){
122 char *buf = (char *) (DemodBuffer + offset);
123 numBits = binarraytohex(hex, buf, numBits);
124 if (numBits==0) return 0;
125 PrintAndLog("DemodBuffer: %s",hex);
126 } else {
127 //setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
128 char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
129 PrintAndLog("DemodBuffer:\n%s",bin);
130 }
131 return 1;
132 }
133
134 //by marshmellow
135 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
136 int CmdGetBitStream(const char *Cmd)
137 {
138 int i;
139 CmdHpf(Cmd);
140 for (i = 0; i < GraphTraceLen; i++) {
141 if (GraphBuffer[i] >= 1) {
142 GraphBuffer[i] = 1;
143 } else {
144 GraphBuffer[i] = 0;
145 }
146 }
147 RepaintGraphWindow();
148 return 0;
149 }
150
151 //by marshmellow
152 //print 64 bit EM410x ID in multiple formats
153 void printEM410x(uint32_t hi, uint64_t id)
154 {
155 if (id || hi){
156 uint64_t iii=1;
157 uint64_t id2lo=0;
158 uint32_t ii=0;
159 uint32_t i=0;
160 for (ii=5; ii>0;ii--){
161 for (i=0;i<8;i++){
162 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
163 }
164 }
165 if (hi){
166 //output 88 bit em id
167 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
168 } else{
169 //output 40 bit em id
170 PrintAndLog("\nEM TAG ID : %010llX", id);
171 PrintAndLog("Unique TAG ID : %010llX", id2lo);
172 PrintAndLog("\nPossible de-scramble patterns");
173 PrintAndLog("HoneyWell IdentKey {");
174 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
175 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
176 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
177 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
178 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
179 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
180 PrintAndLog("DEZ 14/IK2 : %014lld",id);
181 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
182 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
183 (id2lo & 0xf000000000) >> 36,
184 (id2lo & 0x0f00000000) >> 32,
185 (id2lo & 0x00f0000000) >> 28,
186 (id2lo & 0x000f000000) >> 24,
187 (id2lo & 0x0000f00000) >> 20,
188 (id2lo & 0x00000f0000) >> 16,
189 (id2lo & 0x000000f000) >> 12,
190 (id2lo & 0x0000000f00) >> 8,
191 (id2lo & 0x00000000f0) >> 4,
192 (id2lo & 0x000000000f)
193 );
194 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
195 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
196 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
197
198 uint32_t p1id = (id & 0xFFFFFF);
199 uint8_t arr[32] = {0x00};
200 int i =0;
201 int j = 23;
202 for (; i < 24; ++i, --j ){
203 arr[i] = (p1id >> i) & 1;
204 }
205
206 uint32_t p1 = 0;
207
208 p1 |= arr[23] << 21;
209 p1 |= arr[22] << 23;
210 p1 |= arr[21] << 20;
211 p1 |= arr[20] << 22;
212
213 p1 |= arr[19] << 18;
214 p1 |= arr[18] << 16;
215 p1 |= arr[17] << 19;
216 p1 |= arr[16] << 17;
217
218 p1 |= arr[15] << 13;
219 p1 |= arr[14] << 15;
220 p1 |= arr[13] << 12;
221 p1 |= arr[12] << 14;
222
223 p1 |= arr[11] << 6;
224 p1 |= arr[10] << 2;
225 p1 |= arr[9] << 7;
226 p1 |= arr[8] << 1;
227
228 p1 |= arr[7] << 0;
229 p1 |= arr[6] << 8;
230 p1 |= arr[5] << 11;
231 p1 |= arr[4] << 3;
232
233 p1 |= arr[3] << 10;
234 p1 |= arr[2] << 4;
235 p1 |= arr[1] << 5;
236 p1 |= arr[0] << 9;
237 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
238
239 uint16_t sebury1 = id & 0xFFFF;
240 uint8_t sebury2 = (id >> 16) & 0x7F;
241 uint32_t sebury3 = id & 0x7FFFFF;
242 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
243 }
244 }
245 return;
246 }
247
248 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
249 {
250 size_t idx = 0;
251 size_t BitLen = DemodBufferLen;
252 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
253 memcpy(BitStream, DemodBuffer, BitLen);
254 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
255 //set GraphBuffer for clone or sim command
256 setDemodBuf(BitStream, BitLen, idx);
257 if (g_debugMode){
258 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
259 printDemodBuff();
260 }
261 if (verbose){
262 PrintAndLog("EM410x pattern found: ");
263 printEM410x(*hi, *lo);
264 }
265 return 1;
266 }
267 return 0;
268 }
269
270 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
271 {
272 if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
273 return AskEm410xDecode(verbose, hi, lo);
274 }
275
276 //by marshmellow
277 //takes 3 arguments - clock, invert and maxErr as integers
278 //attempts to demodulate ask while decoding manchester
279 //prints binary found and saves in graphbuffer for further commands
280 int CmdAskEM410xDemod(const char *Cmd)
281 {
282 char cmdp = param_getchar(Cmd, 0);
283 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
284 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
285 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
286 PrintAndLog(" <invert>, 1 for invert output");
287 PrintAndLog(" [set maximum allowed errors], default = 100.");
288 PrintAndLog("");
289 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
290 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
291 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
292 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
293 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");
294 return 0;
295 }
296 uint64_t lo = 0;
297 uint32_t hi = 0;
298 return AskEm410xDemod(Cmd, &hi, &lo, true);
299 }
300
301 //by marshmellow
302 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
303 // (amp may not be needed anymore)
304 //verbose will print results and demoding messages
305 //emSearch will auto search for EM410x format in bitstream
306 //askType switches decode: ask/raw = 0, ask/manchester = 1
307 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
308 {
309 int invert=0;
310 int clk=0;
311 int maxErr=100;
312 int maxLen=0;
313 uint8_t askAmp = 0;
314 char amp = param_getchar(Cmd, 0);
315 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
316 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
317 if (!maxLen) maxLen = 512*64;
318 if (invert != 0 && invert != 1) {
319 PrintAndLog("Invalid argument: %s", Cmd);
320 return 0;
321 }
322 if (clk==1){
323 invert=1;
324 clk=0;
325 }
326 if (amp == 'a' || amp == 'A') askAmp=1;
327 size_t BitLen = getFromGraphBuf(BitStream);
328 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
329 if (BitLen<255) return 0;
330 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
331
332 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
333 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
334 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
335 return 0;
336 }
337 if (errCnt>maxErr){
338 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
339 return 0;
340 }
341 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
342
343 //output
344 setDemodBuf(BitStream,BitLen,0);
345 if (verbose || g_debugMode){
346 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
347 if (askType) PrintAndLog("ASK/Manchester decoded bitstream:");
348 else PrintAndLog("ASK/Raw decoded bitstream:");
349 // Now output the bitstream to the scrollback by line of 16 bits
350 printDemodBuff();
351
352 }
353 uint64_t lo = 0;
354 uint32_t hi = 0;
355 if (emSearch){
356 AskEm410xDecode(true, &hi, &lo);
357 }
358 return 1;
359 }
360
361 //by marshmellow
362 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
363 //attempts to demodulate ask while decoding manchester
364 //prints binary found and saves in graphbuffer for further commands
365 int Cmdaskmandemod(const char *Cmd)
366 {
367 char cmdp = param_getchar(Cmd, 0);
368 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
369 PrintAndLog("Usage: data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
370 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
371 PrintAndLog(" <invert>, 1 to invert output");
372 PrintAndLog(" [set maximum allowed errors], default = 100");
373 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
374 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
375 PrintAndLog("");
376 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
377 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
378 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
379 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
380 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");
381 return 0;
382 }
383 return ASKDemod(Cmd, TRUE, TRUE, 1);
384 }
385
386 //by marshmellow
387 //manchester decode
388 //stricktly take 10 and 01 and convert to 0 and 1
389 int Cmdmandecoderaw(const char *Cmd)
390 {
391 int i =0;
392 int errCnt=0;
393 size_t size=0;
394 int invert=0;
395 size_t maxErr = 20;
396 char cmdp = param_getchar(Cmd, 0);
397 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
398 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
399 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
400 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
401 PrintAndLog(" [invert] invert output");
402 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
403 PrintAndLog("");
404 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
405 return 0;
406 }
407 if (DemodBufferLen==0) return 0;
408 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
409 int high=0,low=0;
410 for (;i<DemodBufferLen;++i){
411 if (DemodBuffer[i]>high) high=DemodBuffer[i];
412 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
413 BitStream[i]=DemodBuffer[i];
414 }
415 if (high>7 || low <0 ){
416 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
417 return 0;
418 }
419
420 sscanf(Cmd, "%i %i", &invert, &maxErr);
421 size=i;
422 errCnt=manrawdecode(BitStream, &size, invert);
423 if (errCnt>=maxErr){
424 PrintAndLog("Too many errors: %d",errCnt);
425 return 0;
426 }
427 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
428 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
429 if (errCnt==0){
430 uint64_t id = 0;
431 uint32_t hi = 0;
432 size_t idx=0;
433 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
434 //need to adjust to set bitstream back to manchester encoded data
435 //setDemodBuf(BitStream, size, idx);
436
437 printEM410x(hi, id);
438 }
439 }
440 return 1;
441 }
442
443 //by marshmellow
444 //biphase decode
445 //take 01 or 10 = 0 and 11 or 00 = 1
446 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
447 // and "invert" default = 0 if 1 it will invert output
448 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
449 int CmdBiphaseDecodeRaw(const char *Cmd)
450 {
451 size_t size=0;
452 int offset=0, invert=0, maxErr=20, errCnt=0;
453 char cmdp = param_getchar(Cmd, 0);
454 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
455 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
456 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
457 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
458 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
459 PrintAndLog("");
460 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
461 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
462 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
463 PrintAndLog("");
464 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
465 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
466 return 0;
467 }
468 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
469 if (DemodBufferLen==0){
470 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
471 return 0;
472 }
473 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
474 memcpy(BitStream, DemodBuffer, DemodBufferLen);
475 size = DemodBufferLen;
476 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
477 if (errCnt<0){
478 PrintAndLog("Error during decode:%d", errCnt);
479 return 0;
480 }
481 if (errCnt>maxErr){
482 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
483 return 0;
484 }
485
486 if (errCnt>0){
487 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
488 }
489 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
490 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
491
492 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
493 return 1;
494 }
495
496 //by marshmellow
497 // - ASK Demod then Biphase decode GraphBuffer samples
498 int ASKbiphaseDemod(const char *Cmd, bool verbose)
499 {
500 //ask raw demod GraphBuffer first
501 int offset=0, clk=0, invert=0, maxErr=0, ans=0;
502 ans = sscanf(Cmd, "%i %i 0 %i", &offset, &clk, &maxErr);
503 if (ans>0)
504 ans = ASKDemod(Cmd+2, FALSE, FALSE, 0);
505 else
506 ans = ASKDemod(Cmd, FALSE, FALSE, 0);
507 if (!ans) {
508 if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans);
509 return 0;
510 }
511
512 //attempt to Biphase decode DemodBuffer
513 size_t size = DemodBufferLen;
514 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
515 memcpy(BitStream, DemodBuffer, DemodBufferLen);
516 int errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
517 if (errCnt < 0){
518 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
519 return 0;
520 }
521 if (errCnt > maxErr) {
522 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
523 return 0;
524 }
525 //success set DemodBuffer and return
526 setDemodBuf(BitStream, size, 0);
527 if (g_debugMode || verbose){
528 PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
529 printDemodBuff();
530 }
531 return 1;
532 }
533 //by marshmellow - see ASKbiphaseDemod
534 int Cmdaskbiphdemod(const char *Cmd)
535 {
536 char cmdp = param_getchar(Cmd, 0);
537 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
538 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
539 PrintAndLog(" [offset], offset to begin biphase, default=0");
540 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
541 PrintAndLog(" <invert>, 1 to invert output");
542 PrintAndLog(" [set maximum allowed errors], default = 100");
543 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
544 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
545 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
546 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
547 PrintAndLog(" NOTE: any other arg must have previous args set to work");
548 PrintAndLog("");
549 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
550 PrintAndLog("");
551 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
552 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
553 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
554 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
555 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
556 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");
557 PrintAndLog(" : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
558 return 0;
559 }
560 return ASKbiphaseDemod(Cmd, TRUE);
561 }
562
563 //by marshmellow
564 //attempts to demodulate and identify a G_Prox_II verex/chubb card
565 //WARNING: if it fails during some points it will destroy the DemodBuffer data
566 // but will leave the GraphBuffer intact.
567 //if successful it will push askraw data back to demod buffer ready for emulation
568 int CmdG_Prox_II_Demod(const char *Cmd)
569 {
570 if (!ASKbiphaseDemod(Cmd, FALSE)){
571 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
572 return 0;
573 }
574 size_t size = DemodBufferLen;
575 //call lfdemod.c demod for gProxII
576 int ans = gProxII_Demod(DemodBuffer, &size);
577 if (ans < 0){
578 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
579 return 0;
580 }
581 //got a good demod
582 uint32_t ByteStream[65] = {0x00};
583 uint8_t xorKey=0;
584 uint8_t keyCnt=0;
585 uint8_t bitCnt=0;
586 uint8_t ByteCnt=0;
587 size_t startIdx = ans + 6; //start after preamble
588 for (size_t idx = 0; idx<size-6; idx++){
589 if ((idx+1) % 5 == 0){
590 //spacer bit - should be 0
591 if (DemodBuffer[startIdx+idx] != 0) {
592 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
593 return 0;
594 }
595 continue;
596 }
597 if (keyCnt<8){ //lsb first
598 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
599 keyCnt++;
600 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
601 continue;
602 }
603 //lsb first
604 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
605 bitCnt++;
606 if (bitCnt % 8 == 0){
607 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
608 bitCnt=0;
609 ByteCnt++;
610 }
611 }
612 for (uint8_t i = 0; i < ByteCnt; i++){
613 ByteStream[i] ^= xorKey; //xor
614 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
615 }
616 //now ByteStream contains 64 bytes of decrypted raw tag data
617 //
618 uint8_t fmtLen = ByteStream[0]>>2;
619 uint32_t FC = 0;
620 uint32_t Card = 0;
621 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
622 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
623 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
624
625 if (fmtLen==36){
626 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
627 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
628 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
629 } else if(fmtLen==26){
630 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
631 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
632 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
633 } else {
634 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
635 }
636 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
637 setDemodBuf(DemodBuffer+ans, 96, 0);
638 return 1;
639 }
640
641 //by marshmellow - see ASKDemod
642 int Cmdaskrawdemod(const char *Cmd)
643 {
644 char cmdp = param_getchar(Cmd, 0);
645 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
646 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
647 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
648 PrintAndLog(" <invert>, 1 to invert output");
649 PrintAndLog(" [set maximum allowed errors], default = 100");
650 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
651 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
652 PrintAndLog("");
653 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
654 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
655 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
656 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
657 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
658 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");
659 PrintAndLog(" : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
660 return 0;
661 }
662 return ASKDemod(Cmd, TRUE, FALSE, 0);
663 }
664
665 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
666 {
667 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
668 size_t Correlation = 0;
669 int maxSum = 0;
670 int lastMax = 0;
671 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
672 for (int i = 0; i < GraphTraceLen - window; ++i) {
673 int sum = 0;
674 for (int j = 0; j < window; ++j) {
675 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
676 }
677 CorrelBuffer[i] = sum;
678 if (sum >= maxSum-100 && sum <= maxSum+100){
679 //another max
680 Correlation = i-lastMax;
681 lastMax = i;
682 if (sum > maxSum) maxSum = sum;
683 } else if (sum > maxSum){
684 maxSum=sum;
685 lastMax = i;
686 }
687 }
688 if (Correlation==0){
689 //try again with wider margin
690 for (int i = 0; i < GraphTraceLen - window; i++){
691 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
692 //another max
693 Correlation = i-lastMax;
694 lastMax = i;
695 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
696 }
697 }
698 }
699 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
700
701 if (SaveGrph){
702 GraphTraceLen = GraphTraceLen - window;
703 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
704 RepaintGraphWindow();
705 }
706 return Correlation;
707 }
708
709 int usage_data_autocorr(void)
710 {
711 //print help
712 PrintAndLog("Usage: data autocorr [window] [g]");
713 PrintAndLog("Options: ");
714 PrintAndLog(" h This help");
715 PrintAndLog(" [window] window length for correlation - default = 4000");
716 PrintAndLog(" g save back to GraphBuffer (overwrite)");
717 return 0;
718 }
719
720 int CmdAutoCorr(const char *Cmd)
721 {
722 char cmdp = param_getchar(Cmd, 0);
723 if (cmdp == 'h' || cmdp == 'H')
724 return usage_data_autocorr();
725 int window = 4000; //set default
726 char grph=0;
727 bool updateGrph = FALSE;
728 sscanf(Cmd, "%i %c", &window, &grph);
729
730 if (window >= GraphTraceLen) {
731 PrintAndLog("window must be smaller than trace (%d samples)",
732 GraphTraceLen);
733 return 0;
734 }
735 if (grph == 'g') updateGrph=TRUE;
736 return AutoCorrelate(window, updateGrph, TRUE);
737 }
738
739 int CmdBitsamples(const char *Cmd)
740 {
741 int cnt = 0;
742 uint8_t got[12288];
743
744 GetFromBigBuf(got,sizeof(got),0);
745 WaitForResponse(CMD_ACK,NULL);
746
747 for (int j = 0; j < sizeof(got); j++) {
748 for (int k = 0; k < 8; k++) {
749 if(got[j] & (1 << (7 - k))) {
750 GraphBuffer[cnt++] = 1;
751 } else {
752 GraphBuffer[cnt++] = 0;
753 }
754 }
755 }
756 GraphTraceLen = cnt;
757 RepaintGraphWindow();
758 return 0;
759 }
760
761 int CmdBuffClear(const char *Cmd)
762 {
763 UsbCommand c = {CMD_BUFF_CLEAR};
764 SendCommand(&c);
765 ClearGraph(true);
766 return 0;
767 }
768
769 int CmdDec(const char *Cmd)
770 {
771 for (int i = 0; i < (GraphTraceLen / 2); ++i)
772 GraphBuffer[i] = GraphBuffer[i * 2];
773 GraphTraceLen /= 2;
774 PrintAndLog("decimated by 2");
775 RepaintGraphWindow();
776 return 0;
777 }
778 /**
779 * Undecimate - I'd call it 'interpolate', but we'll save that
780 * name until someone does an actual interpolation command, not just
781 * blindly repeating samples
782 * @param Cmd
783 * @return
784 */
785 int CmdUndec(const char *Cmd)
786 {
787 if(param_getchar(Cmd, 0) == 'h')
788 {
789 PrintAndLog("Usage: data undec [factor]");
790 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
791 PrintAndLog("Options: ");
792 PrintAndLog(" h This help");
793 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
794 PrintAndLog("Example: 'data undec 3'");
795 return 0;
796 }
797
798 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
799 //We have memory, don't we?
800 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
801 uint32_t g_index = 0 ,s_index = 0;
802 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
803 {
804 int count = 0;
805 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
806 swap[s_index+count] = GraphBuffer[g_index];
807 s_index+=count;
808 }
809
810 memcpy(GraphBuffer,swap, s_index * sizeof(int));
811 GraphTraceLen = s_index;
812 RepaintGraphWindow();
813 return 0;
814 }
815
816 //by marshmellow
817 //shift graph zero up or down based on input + or -
818 int CmdGraphShiftZero(const char *Cmd)
819 {
820
821 int shift=0;
822 //set options from parameters entered with the command
823 sscanf(Cmd, "%i", &shift);
824 int shiftedVal=0;
825 for(int i = 0; i<GraphTraceLen; i++){
826 shiftedVal=GraphBuffer[i]+shift;
827 if (shiftedVal>127)
828 shiftedVal=127;
829 else if (shiftedVal<-127)
830 shiftedVal=-127;
831 GraphBuffer[i]= shiftedVal;
832 }
833 CmdNorm("");
834 return 0;
835 }
836
837 //by marshmellow
838 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
839 //similar to dirtheshold, threshold commands
840 //takes a threshold length which is the measured length between two samples then determines an edge
841 int CmdAskEdgeDetect(const char *Cmd)
842 {
843 int thresLen = 25;
844 sscanf(Cmd, "%i", &thresLen);
845
846 for(int i = 1; i<GraphTraceLen; i++){
847 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
848 GraphBuffer[i-1] = 127;
849 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
850 GraphBuffer[i-1] = -127;
851 }
852 RepaintGraphWindow();
853 return 0;
854 }
855
856 /* Print our clock rate */
857 // uses data from graphbuffer
858 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
859 int CmdDetectClockRate(const char *Cmd)
860 {
861 char cmdp = param_getchar(Cmd, 0);
862 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
863 PrintAndLog("Usage: data detectclock [modulation] <clock>");
864 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
865 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
866 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
867 PrintAndLog("");
868 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
869 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
870 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
871 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
872 }
873 int ans=0;
874 if (cmdp == 'a'){
875 ans = GetAskClock(Cmd+1, true, false);
876 } else if (cmdp == 'f'){
877 ans = GetFskClock("", true, false);
878 } else if (cmdp == 'n'){
879 ans = GetNrzClock("", true, false);
880 } else if (cmdp == 'p'){
881 ans = GetPskClock("", true, false);
882 } else {
883 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
884 }
885 return ans;
886 }
887
888 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
889 {
890 char *fskType;
891 if (fchigh==10 && fclow==8){
892 if (invert) //fsk2a
893 fskType = "FSK2a";
894 else //fsk2
895 fskType = "FSK2";
896 } else if (fchigh == 8 && fclow == 5) {
897 if (invert)
898 fskType = "FSK1";
899 else
900 fskType = "FSK1a";
901 } else {
902 fskType = "FSK??";
903 }
904 return fskType;
905 }
906
907 //by marshmellow
908 //fsk raw demod and print binary
909 //takes 4 arguments - Clock, invert, fchigh, fclow
910 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
911 int FSKrawDemod(const char *Cmd, bool verbose)
912 {
913 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
914 //set defaults
915 int rfLen = 0;
916 int invert = 0;
917 int fchigh = 0;
918 int fclow = 0;
919
920 //set options from parameters entered with the command
921 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
922
923 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
924 if (rfLen==1){
925 invert = 1; //if invert option only is used
926 rfLen = 0;
927 }
928 }
929
930 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
931 size_t BitLen = getFromGraphBuf(BitStream);
932 if (BitLen==0) return 0;
933 //get field clock lengths
934 uint16_t fcs=0;
935 if (fchigh==0 || fclow == 0){
936 fcs = countFC(BitStream, BitLen, 1);
937 if (fcs==0){
938 fchigh=10;
939 fclow=8;
940 }else{
941 fchigh = (fcs >> 8) & 0xFF;
942 fclow = fcs & 0xFF;
943 }
944 }
945 //get bit clock length
946 if (rfLen==0){
947 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
948 if (rfLen == 0) rfLen = 50;
949 }
950 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
951 if (size>0){
952 setDemodBuf(BitStream,size,0);
953
954 // Now output the bitstream to the scrollback by line of 16 bits
955 if (verbose || g_debugMode) {
956 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
957 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
958 printDemodBuff();
959 }
960
961 return 1;
962 } else{
963 if (g_debugMode) PrintAndLog("no FSK data found");
964 }
965 return 0;
966 }
967
968 //by marshmellow
969 //fsk raw demod and print binary
970 //takes 4 arguments - Clock, invert, fchigh, fclow
971 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
972 int CmdFSKrawdemod(const char *Cmd)
973 {
974 char cmdp = param_getchar(Cmd, 0);
975 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
976 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
977 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
978 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
979 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
980 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
981 PrintAndLog("");
982 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
983 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
984 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
985 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
986 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
987 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
988 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
989 return 0;
990 }
991 return FSKrawDemod(Cmd, TRUE);
992 }
993
994 //by marshmellow (based on existing demod + holiman's refactor)
995 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
996 //print full HID Prox ID and some bit format details if found
997 int CmdFSKdemodHID(const char *Cmd)
998 {
999 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1000 uint32_t hi2=0, hi=0, lo=0;
1001
1002 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1003 size_t BitLen = getFromGraphBuf(BitStream);
1004 if (BitLen==0) return 0;
1005 //get binary from fsk wave
1006 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1007 if (idx<0){
1008 if (g_debugMode){
1009 if (idx==-1){
1010 PrintAndLog("DEBUG: Just Noise Detected");
1011 } else if (idx == -2) {
1012 PrintAndLog("DEBUG: Error demoding fsk");
1013 } else if (idx == -3) {
1014 PrintAndLog("DEBUG: Preamble not found");
1015 } else if (idx == -4) {
1016 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1017 } else {
1018 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1019 }
1020 }
1021 return 0;
1022 }
1023 if (hi2==0 && hi==0 && lo==0) {
1024 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1025 return 0;
1026 }
1027 if (hi2 != 0){ //extra large HID tags
1028 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1029 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1030 }
1031 else { //standard HID tags <38 bits
1032 uint8_t fmtLen = 0;
1033 uint32_t fc = 0;
1034 uint32_t cardnum = 0;
1035 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1036 uint32_t lo2=0;
1037 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1038 uint8_t idx3 = 1;
1039 while(lo2>1){ //find last bit set to 1 (format len bit)
1040 lo2=lo2>>1;
1041 idx3++;
1042 }
1043 fmtLen =idx3+19;
1044 fc =0;
1045 cardnum=0;
1046 if(fmtLen==26){
1047 cardnum = (lo>>1)&0xFFFF;
1048 fc = (lo>>17)&0xFF;
1049 }
1050 if(fmtLen==34){
1051 cardnum = (lo>>1)&0xFFFF;
1052 fc= ((hi&1)<<15)|(lo>>17);
1053 }
1054 if(fmtLen==35){
1055 cardnum = (lo>>1)&0xFFFFF;
1056 fc = ((hi&1)<<11)|(lo>>21);
1057 }
1058 }
1059 else { //if bit 38 is not set then 37 bit format is used
1060 fmtLen = 37;
1061 fc = 0;
1062 cardnum = 0;
1063 if(fmtLen == 37){
1064 cardnum = (lo>>1)&0x7FFFF;
1065 fc = ((hi&0xF)<<12)|(lo>>20);
1066 }
1067 }
1068 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1069 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1070 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1071 }
1072 setDemodBuf(BitStream,BitLen,idx);
1073 if (g_debugMode){
1074 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1075 printDemodBuff();
1076 }
1077 return 1;
1078 }
1079
1080 //by marshmellow
1081 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1082 //print full Paradox Prox ID and some bit format details if found
1083 int CmdFSKdemodParadox(const char *Cmd)
1084 {
1085 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1086 uint32_t hi2=0, hi=0, lo=0;
1087
1088 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1089 size_t BitLen = getFromGraphBuf(BitStream);
1090 if (BitLen==0) return 0;
1091 //get binary from fsk wave
1092 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1093 if (idx<0){
1094 if (g_debugMode){
1095 if (idx==-1){
1096 PrintAndLog("DEBUG: Just Noise Detected");
1097 } else if (idx == -2) {
1098 PrintAndLog("DEBUG: Error demoding fsk");
1099 } else if (idx == -3) {
1100 PrintAndLog("DEBUG: Preamble not found");
1101 } else if (idx == -4) {
1102 PrintAndLog("DEBUG: Error in Manchester data");
1103 } else {
1104 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1105 }
1106 }
1107 return 0;
1108 }
1109 if (hi2==0 && hi==0 && lo==0){
1110 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1111 return 0;
1112 }
1113 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1114 uint32_t cardnum = (lo>>10)&0xFFFF;
1115 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1116 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1117 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1118
1119 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1120 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1121 setDemodBuf(BitStream,BitLen,idx);
1122 if (g_debugMode){
1123 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1124 printDemodBuff();
1125 }
1126 return 1;
1127 }
1128
1129 //by marshmellow
1130 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1131 //print ioprox ID and some format details
1132 int CmdFSKdemodIO(const char *Cmd)
1133 {
1134 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1135 //set defaults
1136 int idx=0;
1137 //something in graphbuffer?
1138 if (GraphTraceLen < 65) {
1139 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1140 return 0;
1141 }
1142 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1143 size_t BitLen = getFromGraphBuf(BitStream);
1144 if (BitLen==0) return 0;
1145
1146 //get binary from fsk wave
1147 idx = IOdemodFSK(BitStream,BitLen);
1148 if (idx<0){
1149 if (g_debugMode){
1150 if (idx==-1){
1151 PrintAndLog("DEBUG: Just Noise Detected");
1152 } else if (idx == -2) {
1153 PrintAndLog("DEBUG: not enough samples");
1154 } else if (idx == -3) {
1155 PrintAndLog("DEBUG: error during fskdemod");
1156 } else if (idx == -4) {
1157 PrintAndLog("DEBUG: Preamble not found");
1158 } else if (idx == -5) {
1159 PrintAndLog("DEBUG: Separator bits not found");
1160 } else {
1161 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1162 }
1163 }
1164 return 0;
1165 }
1166 if (idx==0){
1167 if (g_debugMode){
1168 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
1169 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1170 }
1171 return 0;
1172 }
1173 //Index map
1174 //0 10 20 30 40 50 60
1175 //| | | | | | |
1176 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1177 //-----------------------------------------------------------------------------
1178 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1179 //
1180 //XSF(version)facility:codeone+codetwo (raw)
1181 //Handle the data
1182 if (idx+64>BitLen) {
1183 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
1184 return 0;
1185 }
1186 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]);
1187 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]);
1188 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]);
1189 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]);
1190 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]);
1191 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]);
1192 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]);
1193
1194 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1195 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1196 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1197 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1198 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1199 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1200 uint16_t calccrc = 0;
1201
1202 for (uint8_t i=1; i<6; ++i){
1203 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
1204 }
1205 calccrc &= 0xff;
1206 calccrc = 0xff - calccrc;
1207
1208 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1209
1210 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1211 setDemodBuf(BitStream,64,idx);
1212 if (g_debugMode){
1213 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1214 printDemodBuff();
1215 }
1216 return 1;
1217 }
1218
1219 //by marshmellow
1220 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1221 //print full AWID Prox ID and some bit format details if found
1222 int CmdFSKdemodAWID(const char *Cmd)
1223 {
1224
1225 //int verbose=1;
1226 //sscanf(Cmd, "%i", &verbose);
1227
1228 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1229 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1230 size_t size = getFromGraphBuf(BitStream);
1231 if (size==0) return 0;
1232
1233 //get binary from fsk wave
1234 int idx = AWIDdemodFSK(BitStream, &size);
1235 if (idx<=0){
1236 if (g_debugMode==1){
1237 if (idx == -1)
1238 PrintAndLog("DEBUG: Error - not enough samples");
1239 else if (idx == -2)
1240 PrintAndLog("DEBUG: Error - only noise found");
1241 else if (idx == -3)
1242 PrintAndLog("DEBUG: Error - problem during FSK demod");
1243 else if (idx == -4)
1244 PrintAndLog("DEBUG: Error - AWID preamble not found");
1245 else if (idx == -5)
1246 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1247 else
1248 PrintAndLog("DEBUG: Error %d",idx);
1249 }
1250 return 0;
1251 }
1252
1253 // Index map
1254 // 0 10 20 30 40 50 60
1255 // | | | | | | |
1256 // 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
1257 // -----------------------------------------------------------------------------
1258 // 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
1259 // 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
1260 // |---26 bit---| |-----117----||-------------142-------------|
1261 // b = format bit len, o = odd parity of last 3 bits
1262 // f = facility code, c = card number
1263 // w = wiegand parity
1264 // (26 bit format shown)
1265
1266 //get raw ID before removing parities
1267 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1268 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1269 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1270 setDemodBuf(BitStream,96,idx);
1271
1272 size = removeParity(BitStream, idx+8, 4, 1, 88);
1273 if (size != 66){
1274 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1275 return 0;
1276 }
1277 // ok valid card found!
1278
1279 // Index map
1280 // 0 10 20 30 40 50 60
1281 // | | | | | | |
1282 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1283 // -----------------------------------------------------------------------------
1284 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1285 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1286 // |26 bit| |-117--| |-----142------|
1287 // b = format bit len, o = odd parity of last 3 bits
1288 // f = facility code, c = card number
1289 // w = wiegand parity
1290 // (26 bit format shown)
1291
1292 uint32_t fc = 0;
1293 uint32_t cardnum = 0;
1294 uint32_t code1 = 0;
1295 uint32_t code2 = 0;
1296 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1297 if (fmtLen==26){
1298 fc = bytebits_to_byte(BitStream+9, 8);
1299 cardnum = bytebits_to_byte(BitStream+17, 16);
1300 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1301 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1302 } else {
1303 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1304 if (fmtLen>32){
1305 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1306 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1307 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1308 } else{
1309 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1310 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1311 }
1312 }
1313 if (g_debugMode){
1314 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1315 printDemodBuff();
1316 }
1317 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1318 return 1;
1319 }
1320
1321 //by marshmellow
1322 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1323 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1324 int CmdFSKdemodPyramid(const char *Cmd)
1325 {
1326 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1327 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1328 size_t size = getFromGraphBuf(BitStream);
1329 if (size==0) return 0;
1330
1331 //get binary from fsk wave
1332 int idx = PyramiddemodFSK(BitStream, &size);
1333 if (idx < 0){
1334 if (g_debugMode==1){
1335 if (idx == -5)
1336 PrintAndLog("DEBUG: Error - not enough samples");
1337 else if (idx == -1)
1338 PrintAndLog("DEBUG: Error - only noise found");
1339 else if (idx == -2)
1340 PrintAndLog("DEBUG: Error - problem during FSK demod");
1341 else if (idx == -3)
1342 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1343 else if (idx == -4)
1344 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1345 else
1346 PrintAndLog("DEBUG: Error - idx: %d",idx);
1347 }
1348 return 0;
1349 }
1350 // Index map
1351 // 0 10 20 30 40 50 60
1352 // | | | | | | |
1353 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1354 // -----------------------------------------------------------------------------
1355 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1356 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1357
1358 // 64 70 80 90 100 110 120
1359 // | | | | | | |
1360 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1361 // -----------------------------------------------------------------------------
1362 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1363 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1364 // |---115---||---------71---------|
1365 // s = format start bit, o = odd parity of last 7 bits
1366 // f = facility code, c = card number
1367 // w = wiegand parity, x = extra space for other formats
1368 // p = unknown checksum
1369 // (26 bit format shown)
1370
1371 //get bytes for checksum calc
1372 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1373 uint8_t csBuff[14] = {0x00};
1374 for (uint8_t i = 0; i < 13; i++){
1375 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1376 }
1377 //check checksum calc
1378 //checksum calc thanks to ICEMAN!!
1379 uint32_t checkCS = CRC8Maxim(csBuff,13);
1380
1381 //get raw ID before removing parities
1382 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1383 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1384 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1385 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1386 setDemodBuf(BitStream,128,idx);
1387
1388 size = removeParity(BitStream, idx+8, 8, 1, 120);
1389 if (size != 105){
1390 if (g_debugMode==1)
1391 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1392 return 0;
1393 }
1394
1395 // ok valid card found!
1396
1397 // Index map
1398 // 0 10 20 30 40 50 60 70
1399 // | | | | | | | |
1400 // 01234567890123456789012345678901234567890123456789012345678901234567890
1401 // -----------------------------------------------------------------------
1402 // 00000000000000000000000000000000000000000000000000000000000000000000000
1403 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1404
1405 // 71 80 90 100
1406 // | | | |
1407 // 1 2 34567890 1234567890123456 7 8901234
1408 // ---------------------------------------
1409 // 1 1 01110011 0000000001000110 0 1001010
1410 // s w ffffffff cccccccccccccccc w ppppppp
1411 // |--115-| |------71------|
1412 // s = format start bit, o = odd parity of last 7 bits
1413 // f = facility code, c = card number
1414 // w = wiegand parity, x = extra space for other formats
1415 // p = unknown checksum
1416 // (26 bit format shown)
1417
1418 //find start bit to get fmtLen
1419 int j;
1420 for (j=0; j<size; j++){
1421 if(BitStream[j]) break;
1422 }
1423 uint8_t fmtLen = size-j-8;
1424 uint32_t fc = 0;
1425 uint32_t cardnum = 0;
1426 uint32_t code1 = 0;
1427 //uint32_t code2 = 0;
1428 if (fmtLen==26){
1429 fc = bytebits_to_byte(BitStream+73, 8);
1430 cardnum = bytebits_to_byte(BitStream+81, 16);
1431 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1432 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);
1433 } else if (fmtLen==45){
1434 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1435 fc = bytebits_to_byte(BitStream+53, 10);
1436 cardnum = bytebits_to_byte(BitStream+63, 32);
1437 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1438 } else {
1439 cardnum = bytebits_to_byte(BitStream+81, 16);
1440 if (fmtLen>32){
1441 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1442 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1443 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1444 } else{
1445 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1446 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1447 }
1448 }
1449 if (checksum == checkCS)
1450 PrintAndLog("Checksum %02x passed", checksum);
1451 else
1452 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1453
1454 if (g_debugMode){
1455 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1456 printDemodBuff();
1457 }
1458 return 1;
1459 }
1460
1461 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1462 // 8 databits + 1 parity (1)
1463 // CIITT 16 chksum
1464 // NATIONAL CODE, ICAR database
1465 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1466 // FLAG (animal/non-animal)
1467 int CmdFDXBdemodBI(const char *Cmd){
1468
1469 int invert = 1;
1470 int clk = 32;
1471 int errCnt = 0;
1472 int maxErr = 0;
1473 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1474 size_t size = getFromGraphBuf(BitStream);
1475
1476 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1477 if ( errCnt < 0 || errCnt > maxErr ) {
1478 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
1479 return 0;
1480 }
1481
1482 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1483 if (errCnt < 0 || errCnt > maxErr ) {
1484 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
1485 return 0;
1486 }
1487
1488 int preambleIndex = FDXBdemodBI(BitStream, &size);
1489 if (preambleIndex < 0){
1490 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
1491 return 0;
1492 }
1493
1494 setDemodBuf(BitStream, 128, preambleIndex);
1495
1496 // remove but don't verify parity. (pType = 2)
1497 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1498 if ( size <= 103 ) {
1499 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1500 return 0;
1501 }
1502 if (g_debugMode) {
1503 char *bin = sprint_bin_break(BitStream,size,16);
1504 PrintAndLog("DEBUG BinStream:\n%s",bin);
1505 }
1506 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1507 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1508
1509 //got a good demod
1510 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1511 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1512 uint8_t dataBlockBit = BitStream[48];
1513 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1514 uint8_t animalBit = BitStream[63];
1515 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1516 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1517
1518 uint64_t rawid = ((uint64_t)bytebits_to_byteLSBF(BitStream,32)<<32) | bytebits_to_byteLSBF(BitStream+32,32);
1519 uint8_t raw[8];
1520 num_to_bytes(rawid, 8, raw);
1521 uint8_t *raw_ptr = SwapEndian64(raw, 8, 4);
1522
1523 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw_ptr,8));
1524
1525 uint16_t calcCrc = crc16_ccitt_kermit(raw_ptr, 8);
1526 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1527 PrintAndLog("National Code: %012llu", NationalCode);
1528 PrintAndLog("CountryCode: %04u", countryCode);
1529 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1530 PrintAndLog("reserved Code: %u", reservedCode);
1531 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1532 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1533 PrintAndLog("Extended: 0x%X\n", extended);
1534
1535 return 1;
1536 }
1537
1538
1539 //by marshmellow
1540 //attempt to psk1 demod graph buffer
1541 int PSKDemod(const char *Cmd, bool verbose)
1542 {
1543 int invert=0;
1544 int clk=0;
1545 int maxErr=100;
1546 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1547 if (clk==1){
1548 invert=1;
1549 clk=0;
1550 }
1551 if (invert != 0 && invert != 1) {
1552 if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
1553 return 0;
1554 }
1555 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1556 size_t BitLen = getFromGraphBuf(BitStream);
1557 if (BitLen==0) return -1;
1558 uint8_t carrier=countFC(BitStream, BitLen, 0);
1559 if (carrier!=2 && carrier!=4 && carrier!=8){
1560 //invalid carrier
1561 return 0;
1562 }
1563 int errCnt=0;
1564 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1565 if (errCnt > maxErr){
1566 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1567 return 0;
1568 }
1569 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1570 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1571 return 0;
1572 }
1573 if (verbose || g_debugMode){
1574 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1575 if (errCnt>0){
1576 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1577 }
1578 }
1579 //prime demod buffer for output
1580 setDemodBuf(BitStream,BitLen,0);
1581 return 1;
1582 }
1583
1584 // Indala 26 bit decode
1585 // by marshmellow
1586 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1587 int CmdIndalaDecode(const char *Cmd)
1588 {
1589 int ans;
1590 if (strlen(Cmd)>0){
1591 ans = PSKDemod(Cmd, 0);
1592 } else{ //default to RF/32
1593 ans = PSKDemod("32", 0);
1594 }
1595
1596 if (!ans){
1597 if (g_debugMode==1)
1598 PrintAndLog("Error1: %d",ans);
1599 return 0;
1600 }
1601 uint8_t invert=0;
1602 ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
1603 if (ans < 1) {
1604 if (g_debugMode==1)
1605 PrintAndLog("Error2: %d",ans);
1606 return -1;
1607 }
1608 char showbits[251]={0x00};
1609 if (invert)
1610 if (g_debugMode==1)
1611 PrintAndLog("Had to invert bits");
1612
1613 //convert UID to HEX
1614 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1615 int idx;
1616 uid1=0;
1617 uid2=0;
1618 PrintAndLog("BitLen: %d",DemodBufferLen);
1619 if (DemodBufferLen==64){
1620 for( idx=0; idx<64; idx++) {
1621 uid1=(uid1<<1)|(uid2>>31);
1622 if (DemodBuffer[idx] == 0) {
1623 uid2=(uid2<<1)|0;
1624 showbits[idx]='0';
1625 } else {
1626 uid2=(uid2<<1)|1;
1627 showbits[idx]='1';
1628 }
1629 }
1630 showbits[idx]='\0';
1631 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1632 }
1633 else {
1634 uid3=0;
1635 uid4=0;
1636 uid5=0;
1637 uid6=0;
1638 uid7=0;
1639 for( idx=0; idx<DemodBufferLen; idx++) {
1640 uid1=(uid1<<1)|(uid2>>31);
1641 uid2=(uid2<<1)|(uid3>>31);
1642 uid3=(uid3<<1)|(uid4>>31);
1643 uid4=(uid4<<1)|(uid5>>31);
1644 uid5=(uid5<<1)|(uid6>>31);
1645 uid6=(uid6<<1)|(uid7>>31);
1646 if (DemodBuffer[idx] == 0) {
1647 uid7=(uid7<<1)|0;
1648 showbits[idx]='0';
1649 }
1650 else {
1651 uid7=(uid7<<1)|1;
1652 showbits[idx]='1';
1653 }
1654 }
1655 showbits[idx]='\0';
1656 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1657 }
1658 if (g_debugMode){
1659 PrintAndLog("DEBUG: printing demodbuffer:");
1660 printDemodBuff();
1661 }
1662 return 1;
1663 }
1664
1665 int CmdPSKNexWatch(const char *Cmd)
1666 {
1667 if (!PSKDemod("", false)) return 0;
1668 uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
1669 size_t startIdx = 0, size = DemodBufferLen;
1670 bool invert = false;
1671 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1672 // if didn't find preamble try again inverting
1673 if (!PSKDemod("1", false)) return 0;
1674 size = DemodBufferLen;
1675 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1676 invert = true;
1677 }
1678 if (size != 128) return 0;
1679 setDemodBuf(DemodBuffer, size, startIdx+4);
1680 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1681 //get ID
1682 uint32_t ID = 0;
1683 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1684 for (uint8_t idx=0; idx<8; idx++){
1685 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1686 }
1687 }
1688 //parity check (TBD)
1689
1690 //checksum check (TBD)
1691
1692 //output
1693 PrintAndLog("NexWatch ID: %d", ID);
1694 if (invert){
1695 PrintAndLog("Had to Invert - probably NexKey");
1696 for (uint8_t idx=0; idx<size; idx++)
1697 DemodBuffer[idx] ^= 1;
1698 }
1699
1700 CmdPrintDemodBuff("x");
1701 return 1;
1702 }
1703
1704 // by marshmellow
1705 // takes 3 arguments - clock, invert, maxErr as integers
1706 // attempts to demodulate nrz only
1707 // prints binary found and saves in demodbuffer for further commands
1708 int NRZrawDemod(const char *Cmd, bool verbose)
1709 {
1710 int invert=0;
1711 int clk=0;
1712 int maxErr=100;
1713 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1714 if (clk==1){
1715 invert=1;
1716 clk=0;
1717 }
1718 if (invert != 0 && invert != 1) {
1719 PrintAndLog("Invalid argument: %s", Cmd);
1720 return 0;
1721 }
1722 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1723 size_t BitLen = getFromGraphBuf(BitStream);
1724 if (BitLen==0) return 0;
1725 int errCnt=0;
1726 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1727 if (errCnt > maxErr){
1728 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1729 return 0;
1730 }
1731 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1732 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1733 return 0;
1734 }
1735 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1736 //prime demod buffer for output
1737 setDemodBuf(BitStream,BitLen,0);
1738
1739 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1740 if (verbose || g_debugMode) {
1741 PrintAndLog("NRZ demoded bitstream:");
1742 // Now output the bitstream to the scrollback by line of 16 bits
1743 printDemodBuff();
1744 }
1745 return 1;
1746 }
1747
1748 int CmdNRZrawDemod(const char *Cmd)
1749 {
1750 char cmdp = param_getchar(Cmd, 0);
1751 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1752 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1753 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1754 PrintAndLog(" <invert>, 1 for invert output");
1755 PrintAndLog(" [set maximum allowed errors], default = 100.");
1756 PrintAndLog("");
1757 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1758 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1759 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1760 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1761 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");
1762 return 0;
1763 }
1764 return NRZrawDemod(Cmd, TRUE);
1765 }
1766
1767 // by marshmellow
1768 // takes 3 arguments - clock, invert, maxErr as integers
1769 // attempts to demodulate psk only
1770 // prints binary found and saves in demodbuffer for further commands
1771 int CmdPSK1rawDemod(const char *Cmd)
1772 {
1773 int ans;
1774 char cmdp = param_getchar(Cmd, 0);
1775 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1776 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1777 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1778 PrintAndLog(" <invert>, 1 for invert output");
1779 PrintAndLog(" [set maximum allowed errors], default = 100.");
1780 PrintAndLog("");
1781 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1782 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1783 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1784 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1785 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");
1786 return 0;
1787 }
1788 ans = PSKDemod(Cmd, TRUE);
1789 //output
1790 if (!ans){
1791 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1792 return 0;
1793 }
1794
1795 PrintAndLog("PSK1 demoded bitstream:");
1796 // Now output the bitstream to the scrollback by line of 16 bits
1797 printDemodBuff();
1798 return 1;
1799 }
1800
1801 // by marshmellow
1802 // takes same args as cmdpsk1rawdemod
1803 int CmdPSK2rawDemod(const char *Cmd)
1804 {
1805 int ans=0;
1806 char cmdp = param_getchar(Cmd, 0);
1807 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1808 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1809 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1810 PrintAndLog(" <invert>, 1 for invert output");
1811 PrintAndLog(" [set maximum allowed errors], default = 100.");
1812 PrintAndLog("");
1813 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1814 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1815 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1816 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1817 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");
1818 return 0;
1819 }
1820 ans=PSKDemod(Cmd, TRUE);
1821 if (!ans){
1822 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1823 return 0;
1824 }
1825 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1826 PrintAndLog("PSK2 demoded bitstream:");
1827 // Now output the bitstream to the scrollback by line of 16 bits
1828 printDemodBuff();
1829 return 1;
1830 }
1831
1832 // by marshmellow - combines all raw demod functions into one menu command
1833 int CmdRawDemod(const char *Cmd)
1834 {
1835 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1836
1837 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
1838 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1839 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1840 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1841 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1842 PrintAndLog(" <options> see specific modulation help for optional parameters");
1843 PrintAndLog("");
1844 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1845 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1846 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1847 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1848 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1849 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1850 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1851 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1852 return 0;
1853 }
1854 char cmdp2 = Cmd[1];
1855 int ans = 0;
1856 if (cmdp == 'f' && cmdp2 == 's'){
1857 ans = CmdFSKrawdemod(Cmd+2);
1858 } else if(cmdp == 'a' && cmdp2 == 'b'){
1859 ans = Cmdaskbiphdemod(Cmd+2);
1860 } else if(cmdp == 'a' && cmdp2 == 'm'){
1861 ans = Cmdaskmandemod(Cmd+2);
1862 } else if(cmdp == 'a' && cmdp2 == 'r'){
1863 ans = Cmdaskrawdemod(Cmd+2);
1864 } else if(cmdp == 'n' && cmdp2 == 'r'){
1865 ans = CmdNRZrawDemod(Cmd+2);
1866 } else if(cmdp == 'p' && cmdp2 == '1'){
1867 ans = CmdPSK1rawDemod(Cmd+2);
1868 } else if(cmdp == 'p' && cmdp2 == '2'){
1869 ans = CmdPSK2rawDemod(Cmd+2);
1870 } else {
1871 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1872 }
1873 return ans;
1874 }
1875
1876 int CmdGrid(const char *Cmd)
1877 {
1878 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1879 PlotGridXdefault= PlotGridX;
1880 PlotGridYdefault= PlotGridY;
1881 RepaintGraphWindow();
1882 return 0;
1883 }
1884
1885 int CmdHexsamples(const char *Cmd)
1886 {
1887 int i, j;
1888 int requested = 0;
1889 int offset = 0;
1890 char string_buf[25];
1891 char* string_ptr = string_buf;
1892 uint8_t got[BIGBUF_SIZE];
1893
1894 sscanf(Cmd, "%i %i", &requested, &offset);
1895
1896 /* if no args send something */
1897 if (requested == 0) {
1898 requested = 8;
1899 }
1900 if (offset + requested > sizeof(got)) {
1901 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1902 return 0;
1903 }
1904
1905 GetFromBigBuf(got,requested,offset);
1906 WaitForResponse(CMD_ACK,NULL);
1907
1908 i = 0;
1909 for (j = 0; j < requested; j++) {
1910 i++;
1911 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1912 if (i == 8) {
1913 *(string_ptr - 1) = '\0'; // remove the trailing space
1914 PrintAndLog("%s", string_buf);
1915 string_buf[0] = '\0';
1916 string_ptr = string_buf;
1917 i = 0;
1918 }
1919 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1920 *(string_ptr - 1) = '\0';
1921 PrintAndLog("%s", string_buf);
1922 string_buf[0] = '\0';
1923 }
1924 }
1925 return 0;
1926 }
1927
1928 int CmdHide(const char *Cmd)
1929 {
1930 HideGraphWindow();
1931 return 0;
1932 }
1933
1934 //zero mean GraphBuffer
1935 int CmdHpf(const char *Cmd)
1936 {
1937 int i;
1938 int accum = 0;
1939
1940 for (i = 10; i < GraphTraceLen; ++i)
1941 accum += GraphBuffer[i];
1942 accum /= (GraphTraceLen - 10);
1943 for (i = 0; i < GraphTraceLen; ++i)
1944 GraphBuffer[i] -= accum;
1945
1946 RepaintGraphWindow();
1947 return 0;
1948 }
1949 typedef struct {
1950 uint8_t * buffer;
1951 uint32_t numbits;
1952 uint32_t position;
1953 }BitstreamOut;
1954
1955 bool _headBit( BitstreamOut *stream)
1956 {
1957 int bytepos = stream->position >> 3; // divide by 8
1958 int bitpos = (stream->position++) & 7; // mask out 00000111
1959 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1960 }
1961
1962 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1963 {
1964 int i;
1965 uint8_t val = 0;
1966 for(i =0 ; i < bits_per_sample; i++)
1967 {
1968 val |= (_headBit(b) << (7-i));
1969 }
1970 return val;
1971 }
1972
1973 int getSamples(const char *Cmd, bool silent)
1974 {
1975 //If we get all but the last byte in bigbuf,
1976 // we don't have to worry about remaining trash
1977 // in the last byte in case the bits-per-sample
1978 // does not line up on byte boundaries
1979
1980 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1981
1982 int n = strtol(Cmd, NULL, 0);
1983
1984 if (n == 0)
1985 n = sizeof(got);
1986
1987 if (n > sizeof(got))
1988 n = sizeof(got);
1989
1990 PrintAndLog("Reading %d bytes from device memory\n", n);
1991 GetFromBigBuf(got,n,0);
1992 PrintAndLog("Data fetched");
1993 UsbCommand response;
1994 WaitForResponse(CMD_ACK, &response);
1995 uint8_t bits_per_sample = 8;
1996
1997 //Old devices without this feature would send 0 at arg[0]
1998 if(response.arg[0] > 0)
1999 {
2000 sample_config *sc = (sample_config *) response.d.asBytes;
2001 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
2002 , sc->decimation);
2003 bits_per_sample = sc->bits_per_sample;
2004 }
2005 if(bits_per_sample < 8)
2006 {
2007 PrintAndLog("Unpacking...");
2008 BitstreamOut bout = { got, bits_per_sample * n, 0};
2009 int j =0;
2010 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2011 uint8_t sample = getByte(bits_per_sample, &bout);
2012 GraphBuffer[j] = ((int) sample )- 128;
2013 }
2014 GraphTraceLen = j;
2015 PrintAndLog("Unpacked %d samples" , j );
2016 }else
2017 {
2018 for (int j = 0; j < n; j++) {
2019 GraphBuffer[j] = ((int)got[j]) - 128;
2020 }
2021 GraphTraceLen = n;
2022 }
2023
2024 RepaintGraphWindow();
2025 return 0;
2026 }
2027
2028 int CmdSamples(const char *Cmd)
2029 {
2030 return getSamples(Cmd, false);
2031 }
2032
2033 int CmdTuneSamples(const char *Cmd)
2034 {
2035 int timeout = 0;
2036 printf("\nMeasuring antenna characteristics, please wait...");
2037
2038 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
2039 SendCommand(&c);
2040
2041 UsbCommand resp;
2042 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
2043 timeout++;
2044 printf(".");
2045 if (timeout > 7) {
2046 PrintAndLog("\nNo response from Proxmark. Aborting...");
2047 return 1;
2048 }
2049 }
2050
2051 int peakv, peakf;
2052 int vLf125, vLf134, vHf;
2053 vLf125 = resp.arg[0] & 0xffff;
2054 vLf134 = resp.arg[0] >> 16;
2055 vHf = resp.arg[1] & 0xffff;;
2056 peakf = resp.arg[2] & 0xffff;
2057 peakv = resp.arg[2] >> 16;
2058 PrintAndLog("");
2059 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2060 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2061 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2062 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2063
2064 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2065 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2066 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2067 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2068
2069 if (peakv < LF_UNUSABLE_V)
2070 PrintAndLog("# Your LF antenna is unusable.");
2071 else if (peakv < LF_MARGINAL_V)
2072 PrintAndLog("# Your LF antenna is marginal.");
2073 if (vHf < HF_UNUSABLE_V)
2074 PrintAndLog("# Your HF antenna is unusable.");
2075 else if (vHf < HF_MARGINAL_V)
2076 PrintAndLog("# Your HF antenna is marginal.");
2077
2078 if (peakv >= LF_UNUSABLE_V) {
2079 for (int i = 0; i < 256; i++) {
2080 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2081 }
2082 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2083 PrintAndLog("\n");
2084 GraphTraceLen = 256;
2085 ShowGraphWindow();
2086 RepaintGraphWindow();
2087 }
2088
2089 return 0;
2090 }
2091
2092
2093 int CmdLoad(const char *Cmd)
2094 {
2095 char filename[FILE_PATH_SIZE] = {0x00};
2096 int len = 0;
2097
2098 len = strlen(Cmd);
2099 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2100 memcpy(filename, Cmd, len);
2101
2102 FILE *f = fopen(filename, "r");
2103 if (!f) {
2104 PrintAndLog("couldn't open '%s'", filename);
2105 return 0;
2106 }
2107
2108 GraphTraceLen = 0;
2109 char line[80];
2110 while (fgets(line, sizeof (line), f)) {
2111 GraphBuffer[GraphTraceLen] = atoi(line);
2112 GraphTraceLen++;
2113 }
2114 fclose(f);
2115 PrintAndLog("loaded %d samples", GraphTraceLen);
2116 RepaintGraphWindow();
2117 return 0;
2118 }
2119
2120 int CmdLtrim(const char *Cmd)
2121 {
2122 int ds = atoi(Cmd);
2123 if (GraphTraceLen<=0) return 0;
2124 for (int i = ds; i < GraphTraceLen; ++i)
2125 GraphBuffer[i-ds] = GraphBuffer[i];
2126 GraphTraceLen -= ds;
2127
2128 RepaintGraphWindow();
2129 return 0;
2130 }
2131
2132 // trim graph to input argument length
2133 int CmdRtrim(const char *Cmd)
2134 {
2135 int ds = atoi(Cmd);
2136
2137 GraphTraceLen = ds;
2138
2139 RepaintGraphWindow();
2140 return 0;
2141 }
2142
2143 int CmdNorm(const char *Cmd)
2144 {
2145 int i;
2146 int max = INT_MIN, min = INT_MAX;
2147
2148 for (i = 10; i < GraphTraceLen; ++i) {
2149 if (GraphBuffer[i] > max)
2150 max = GraphBuffer[i];
2151 if (GraphBuffer[i] < min)
2152 min = GraphBuffer[i];
2153 }
2154
2155 if (max != min) {
2156 for (i = 0; i < GraphTraceLen; ++i) {
2157 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
2158 (max - min);
2159 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2160 }
2161 }
2162 RepaintGraphWindow();
2163 return 0;
2164 }
2165
2166 int CmdPlot(const char *Cmd)
2167 {
2168 ShowGraphWindow();
2169 return 0;
2170 }
2171
2172 int CmdSave(const char *Cmd)
2173 {
2174 char filename[FILE_PATH_SIZE] = {0x00};
2175 int len = 0;
2176
2177 len = strlen(Cmd);
2178 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2179 memcpy(filename, Cmd, len);
2180
2181
2182 FILE *f = fopen(filename, "w");
2183 if(!f) {
2184 PrintAndLog("couldn't open '%s'", filename);
2185 return 0;
2186 }
2187 int i;
2188 for (i = 0; i < GraphTraceLen; i++) {
2189 fprintf(f, "%d\n", GraphBuffer[i]);
2190 }
2191 fclose(f);
2192 PrintAndLog("saved to '%s'", Cmd);
2193 return 0;
2194 }
2195
2196 int CmdScale(const char *Cmd)
2197 {
2198 CursorScaleFactor = atoi(Cmd);
2199 if (CursorScaleFactor == 0) {
2200 PrintAndLog("bad, can't have zero scale");
2201 CursorScaleFactor = 1;
2202 }
2203 RepaintGraphWindow();
2204 return 0;
2205 }
2206
2207 int CmdDirectionalThreshold(const char *Cmd)
2208 {
2209 int8_t upThres = param_get8(Cmd, 0);
2210 int8_t downThres = param_get8(Cmd, 1);
2211
2212 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2213
2214 int lastValue = GraphBuffer[0];
2215 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2216
2217 for (int i = 1; i < GraphTraceLen; ++i) {
2218 // Apply first threshold to samples heading up
2219 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2220 {
2221 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2222 GraphBuffer[i] = 1;
2223 }
2224 // Apply second threshold to samples heading down
2225 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2226 {
2227 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2228 GraphBuffer[i] = -1;
2229 }
2230 else
2231 {
2232 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2233 GraphBuffer[i] = GraphBuffer[i-1];
2234
2235 }
2236 }
2237 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2238 RepaintGraphWindow();
2239 return 0;
2240 }
2241
2242 int CmdZerocrossings(const char *Cmd)
2243 {
2244 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2245 CmdHpf("");
2246
2247 int sign = 1;
2248 int zc = 0;
2249 int lastZc = 0;
2250
2251 for (int i = 0; i < GraphTraceLen; ++i) {
2252 if (GraphBuffer[i] * sign >= 0) {
2253 // No change in sign, reproduce the previous sample count.
2254 zc++;
2255 GraphBuffer[i] = lastZc;
2256 } else {
2257 // Change in sign, reset the sample count.
2258 sign = -sign;
2259 GraphBuffer[i] = lastZc;
2260 if (sign > 0) {
2261 lastZc = zc;
2262 zc = 0;
2263 }
2264 }
2265 }
2266
2267 RepaintGraphWindow();
2268 return 0;
2269 }
2270
2271 static command_t CommandTable[] =
2272 {
2273 {"help", CmdHelp, 1, "This help"},
2274 {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
2275 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2276 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2277 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2278 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2279 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2280 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2281 {"dec", CmdDec, 1, "Decimate samples"},
2282 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
2283 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2284 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2285 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2286 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2287 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2288 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2289 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2290 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2291 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2292 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2293 {"hide", CmdHide, 1, "Hide graph window"},
2294 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2295 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2296 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2297 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2298 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2299 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2300 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2301 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
2302 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2303 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2304 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2305 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2306 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2307 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2308 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2309 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2310 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2311 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2312 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2313 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2314 {NULL, NULL, 0, NULL}
2315 };
2316
2317 int CmdData(const char *Cmd)
2318 {
2319 CmdsParse(CommandTable, Cmd);
2320 return 0;
2321 }
2322
2323 int CmdHelp(const char *Cmd)
2324 {
2325 CmdsHelp(CommandTable);
2326 return 0;
2327 }
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