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