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