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[proxmark3-svn] / client / cmddata.c
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a553f267 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
7fe9b0b7 11#include <stdio.h>
12#include <stdlib.h>
13#include <string.h>
14#include <limits.h>
902cb3c0 15#include "proxmark3.h"
7fe9b0b7 16#include "data.h"
17#include "ui.h"
18#include "graph.h"
19#include "cmdparser.h"
d51b2eda 20#include "util.h"
7fe9b0b7 21#include "cmdmain.h"
22#include "cmddata.h"
7db5f1ca 23#include "lfdemod.h"
31abe49f 24#include "usb_cmd.h"
73d04bb4 25#include "crc.h"
31abe49f 26
4118b74d 27uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
ec75f5c1 28uint8_t g_debugMode;
2b3af97d 29size_t DemodBufferLen;
7fe9b0b7 30static int CmdHelp(const char *Cmd);
31
4118b74d 32//set the demod buffer with given array of binary (one bit per byte)
33//by marshmellow
ec75f5c1 34void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
4118b74d 35{
13d77ef9 36 if (buff == NULL)
37 return;
38
39 if ( size >= MAX_DEMOD_BUF_LEN)
40 size = MAX_DEMOD_BUF_LEN;
41
ec75f5c1 42 size_t i = 0;
43 for (; i < size; i++){
44 DemodBuffer[i]=buff[startIdx++];
ba1a299c 45 }
46 DemodBufferLen=size;
47 return;
4118b74d 48}
49
ec75f5c1 50int CmdSetDebugMode(const char *Cmd)
51{
e0165dcf 52 int demod=0;
53 sscanf(Cmd, "%i", &demod);
54 g_debugMode=(uint8_t)demod;
55 return 1;
ec75f5c1 56}
57
979bba37 58int usage_data_printdemodbuf(){
59 PrintAndLog("Usage: data printdemodbuffer x o <offset>");
60 PrintAndLog("Options: ");
61 PrintAndLog(" h This help");
62 PrintAndLog(" x output in hex (omit for binary output)");
63 PrintAndLog(" o <offset> enter offset in # of bits");
64 return 0;
65}
66
4118b74d 67//by marshmellow
abd6112f 68void printDemodBuff(void)
4118b74d 69{
ba1a299c 70 int bitLen = DemodBufferLen;
2767fc02 71 if (bitLen<1) {
ba1a299c 72 PrintAndLog("no bits found in demod buffer");
73 return;
74 }
75 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
e0165dcf 76
2767fc02 77 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
78 PrintAndLog("%s",bin);
79
ba1a299c 80 return;
4118b74d 81}
82
8d960002 83int CmdPrintDemodBuff(const char *Cmd)
84{
979bba37 85 char hex[512]={0x00};
86 bool hexMode = false;
87 bool errors = false;
88 uint8_t offset = 0;
89 char cmdp = 0;
90 while(param_getchar(Cmd, cmdp) != 0x00)
91 {
92 switch(param_getchar(Cmd, cmdp))
93 {
94 case 'h':
95 case 'H':
96 return usage_data_printdemodbuf();
97 case 'x':
98 case 'X':
99 hexMode = true;
100 cmdp++;
101 break;
102 case 'o':
103 case 'O':
104 offset = param_get8(Cmd, cmdp+1);
105 if (!offset) errors = true;
106 cmdp += 2;
107 break;
108 default:
109 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
110 errors = true;
111 break;
112 }
113 if(errors) break;
e0165dcf 114 }
979bba37 115 //Validations
116 if(errors) return usage_data_printdemodbuf();
117
118 int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
119
120 if (hexMode){
121 char *buf = DemodBuffer + offset;
122 numBits = binarraytohex(hex, buf, numBits);
e0165dcf 123 if (numBits==0) return 0;
979bba37 124 PrintAndLog("DemodBuffer: %s",hex);
e0165dcf 125 } else {
979bba37 126 //setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
127 char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
128 PrintAndLog("DemodBuffer:\n%s",bin);
e0165dcf 129 }
130 return 1;
8d960002 131}
7fe9b0b7 132
2767fc02 133//by marshmellow
78f5b1a7 134//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
135int CmdGetBitStream(const char *Cmd)
136{
e0165dcf 137 int i;
138 CmdHpf(Cmd);
139 for (i = 0; i < GraphTraceLen; i++) {
140 if (GraphBuffer[i] >= 1) {
141 GraphBuffer[i] = 1;
142 } else {
143 GraphBuffer[i] = 0;
144 }
145 }
146 RepaintGraphWindow();
147 return 0;
78f5b1a7 148}
149
d5a72d2f 150//by marshmellow
abd6112f 151//print 64 bit EM410x ID in multiple formats
b41534d1 152void printEM410x(uint32_t hi, uint64_t id)
2fc2150e 153{
e0165dcf 154 if (id || hi){
155 uint64_t iii=1;
156 uint64_t id2lo=0;
157 uint32_t ii=0;
158 uint32_t i=0;
159 for (ii=5; ii>0;ii--){
160 for (i=0;i<8;i++){
161 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
162 }
163 }
164 if (hi){
165 //output 88 bit em id
2767fc02 166 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
e0165dcf 167 } else{
168 //output 40 bit em id
2767fc02 169 PrintAndLog("\nEM TAG ID : %010llX", id);
170 PrintAndLog("Unique TAG ID : %010llX", id2lo);
e0165dcf 171 PrintAndLog("\nPossible de-scramble patterns");
172 PrintAndLog("HoneyWell IdentKey {");
173 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
174 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
175 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
176 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
177 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
178 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
179 PrintAndLog("DEZ 14/IK2 : %014lld",id);
180 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
181 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
182 (id2lo & 0xf000000000) >> 36,
183 (id2lo & 0x0f00000000) >> 32,
184 (id2lo & 0x00f0000000) >> 28,
185 (id2lo & 0x000f000000) >> 24,
186 (id2lo & 0x0000f00000) >> 20,
187 (id2lo & 0x00000f0000) >> 16,
188 (id2lo & 0x000000f000) >> 12,
189 (id2lo & 0x0000000f00) >> 8,
190 (id2lo & 0x00000000f0) >> 4,
191 (id2lo & 0x000000000f)
192 );
193 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
194 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
2767fc02 195 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
e0165dcf 196
197 uint32_t p1id = (id & 0xFFFFFF);
198 uint8_t arr[32] = {0x00};
199 int i =0;
200 int j = 23;
201 for (; i < 24; ++i, --j ){
202 arr[i] = (p1id >> i) & 1;
203 }
204
205 uint32_t p1 = 0;
206
207 p1 |= arr[23] << 21;
208 p1 |= arr[22] << 23;
209 p1 |= arr[21] << 20;
210 p1 |= arr[20] << 22;
211
212 p1 |= arr[19] << 18;
213 p1 |= arr[18] << 16;
214 p1 |= arr[17] << 19;
215 p1 |= arr[16] << 17;
216
217 p1 |= arr[15] << 13;
218 p1 |= arr[14] << 15;
219 p1 |= arr[13] << 12;
220 p1 |= arr[12] << 14;
221
222 p1 |= arr[11] << 6;
223 p1 |= arr[10] << 2;
224 p1 |= arr[9] << 7;
225 p1 |= arr[8] << 1;
226
227 p1 |= arr[7] << 0;
228 p1 |= arr[6] << 8;
229 p1 |= arr[5] << 11;
230 p1 |= arr[4] << 3;
231
232 p1 |= arr[3] << 10;
233 p1 |= arr[2] << 4;
234 p1 |= arr[1] << 5;
235 p1 |= arr[0] << 9;
2767fc02 236 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
e0165dcf 237
238 uint16_t sebury1 = id & 0xFFFF;
239 uint8_t sebury2 = (id >> 16) & 0x7F;
240 uint32_t sebury3 = id & 0x7FFFFF;
2767fc02 241 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
e0165dcf 242 }
243 }
244 return;
eb191de6 245}
246
fef74fdc 247int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
13d77ef9 248{
fef74fdc 249 size_t idx = 0;
250 size_t BitLen = DemodBufferLen;
251 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
252 memcpy(BitStream, DemodBuffer, BitLen);
253 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
254 //set GraphBuffer for clone or sim command
255 setDemodBuf(BitStream, BitLen, idx);
e0165dcf 256 if (g_debugMode){
fef74fdc 257 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
e0165dcf 258 printDemodBuff();
259 }
fef74fdc 260 if (verbose){
261 PrintAndLog("EM410x pattern found: ");
262 printEM410x(*hi, *lo);
263 }
e0165dcf 264 return 1;
265 }
266 return 0;
13d77ef9 267}
fef74fdc 268
269int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
270{
271 if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
272 return AskEm410xDecode(verbose, hi, lo);
273}
274
e888ed8e 275//by marshmellow
e770c648 276//takes 3 arguments - clock, invert and maxErr as integers
277//attempts to demodulate ask while decoding manchester
278//prints binary found and saves in graphbuffer for further commands
279int CmdAskEM410xDemod(const char *Cmd)
280{
e0165dcf 281 char cmdp = param_getchar(Cmd, 0);
282 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
283 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
284 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
285 PrintAndLog(" <invert>, 1 for invert output");
286 PrintAndLog(" [set maximum allowed errors], default = 100.");
287 PrintAndLog("");
288 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
289 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
290 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
291 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
292 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");
293 return 0;
294 }
e0165dcf 295 uint64_t lo = 0;
fef74fdc 296 uint32_t hi = 0;
297 return AskEm410xDemod(Cmd, &hi, &lo, true);
e770c648 298}
299
fef74fdc 300//by marshmellow
301//Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
302// (amp may not be needed anymore)
303//verbose will print results and demoding messages
304//emSearch will auto search for EM410x format in bitstream
305//askType switches decode: ask/raw = 0, ask/manchester = 1
306int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
e888ed8e 307{
e0165dcf 308 int invert=0;
309 int clk=0;
310 int maxErr=100;
fef74fdc 311 int maxLen=0;
312 uint8_t askAmp = 0;
313 char amp = param_getchar(Cmd, 0);
e0165dcf 314 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
fef74fdc 315 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
316 if (!maxLen) maxLen = 512*64;
e0165dcf 317 if (invert != 0 && invert != 1) {
318 PrintAndLog("Invalid argument: %s", Cmd);
319 return 0;
320 }
321 if (clk==1){
322 invert=1;
323 clk=0;
324 }
fef74fdc 325 if (amp == 'a' || amp == 'A') askAmp=1;
e0165dcf 326 size_t BitLen = getFromGraphBuf(BitStream);
2767fc02 327 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
fef74fdc 328 if (BitLen<255) return 0;
23f0a7d8 329 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
fef74fdc 330
331 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
332 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
2767fc02 333 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
e0165dcf 334 return 0;
335 }
2767fc02 336 if (errCnt>maxErr){
337 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
338 return 0;
339 }
340 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
e0165dcf 341
342 //output
e0165dcf 343 setDemodBuf(BitStream,BitLen,0);
fef74fdc 344 if (verbose || g_debugMode){
345 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
346 if (askType) PrintAndLog("ASK/Manchester decoded bitstream:");
347 else PrintAndLog("ASK/Raw decoded bitstream:");
348 // Now output the bitstream to the scrollback by line of 16 bits
349 printDemodBuff();
350
351 }
352 uint64_t lo = 0;
353 uint32_t hi = 0;
e0165dcf 354 if (emSearch){
fef74fdc 355 AskEm410xDecode(true, &hi, &lo);
e0165dcf 356 }
357 return 1;
eb191de6 358}
359
4ac906d1 360//by marshmellow
fef74fdc 361//takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
4ac906d1 362//attempts to demodulate ask while decoding manchester
363//prints binary found and saves in graphbuffer for further commands
364int Cmdaskmandemod(const char *Cmd)
365{
e0165dcf 366 char cmdp = param_getchar(Cmd, 0);
fef74fdc 367 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
368 PrintAndLog("Usage: data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
369 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
370 PrintAndLog(" <invert>, 1 to invert output");
371 PrintAndLog(" [set maximum allowed errors], default = 100");
372 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
373 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
e0165dcf 374 PrintAndLog("");
375 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
376 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
377 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
378 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
379 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");
380 return 0;
381 }
fef74fdc 382 return ASKDemod(Cmd, TRUE, TRUE, 1);
4ac906d1 383}
384
eb191de6 385//by marshmellow
d5a72d2f 386//manchester decode
eb191de6 387//stricktly take 10 and 01 and convert to 0 and 1
388int Cmdmandecoderaw(const char *Cmd)
389{
e0165dcf 390 int i =0;
391 int errCnt=0;
392 size_t size=0;
fef74fdc 393 int invert=0;
e0165dcf 394 size_t maxErr = 20;
395 char cmdp = param_getchar(Cmd, 0);
1f918317 396 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
fef74fdc 397 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
e0165dcf 398 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
399 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
fef74fdc 400 PrintAndLog(" [invert] invert output");
1f918317 401 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
e0165dcf 402 PrintAndLog("");
403 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
404 return 0;
405 }
406 if (DemodBufferLen==0) return 0;
407 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
408 int high=0,low=0;
409 for (;i<DemodBufferLen;++i){
410 if (DemodBuffer[i]>high) high=DemodBuffer[i];
411 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
412 BitStream[i]=DemodBuffer[i];
413 }
1f918317 414 if (high>7 || low <0 ){
2767fc02 415 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
e0165dcf 416 return 0;
417 }
1f918317 418
fef74fdc 419 sscanf(Cmd, "%i %i", &invert, &maxErr);
e0165dcf 420 size=i;
fef74fdc 421 errCnt=manrawdecode(BitStream, &size, invert);
e0165dcf 422 if (errCnt>=maxErr){
423 PrintAndLog("Too many errors: %d",errCnt);
424 return 0;
425 }
426 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
2767fc02 427 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
e0165dcf 428 if (errCnt==0){
429 uint64_t id = 0;
430 uint32_t hi = 0;
431 size_t idx=0;
432 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
433 //need to adjust to set bitstream back to manchester encoded data
434 //setDemodBuf(BitStream, size, idx);
435
436 printEM410x(hi, id);
437 }
438 }
439 return 1;
d5a72d2f 440}
441
442//by marshmellow
443//biphase decode
444//take 01 or 10 = 0 and 11 or 00 = 1
1e090a61 445//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
446// and "invert" default = 0 if 1 it will invert output
2767fc02 447// the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
d5a72d2f 448int CmdBiphaseDecodeRaw(const char *Cmd)
449{
ba1a299c 450 size_t size=0;
b41534d1 451 int offset=0, invert=0, maxErr=20, errCnt=0;
b4fb11ba 452 char cmdp = param_getchar(Cmd, 0);
453 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
b41534d1 454 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
455 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
b4fb11ba 456 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
e0165dcf 457 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
b4fb11ba 458 PrintAndLog("");
459 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
460 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
b41534d1 461 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
b4fb11ba 462 PrintAndLog("");
463 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
464 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
465 return 0;
466 }
b41534d1 467 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
468 if (DemodBufferLen==0){
469 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
b4fb11ba 470 return 0;
471 }
b41534d1 472 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
473 memcpy(BitStream, DemodBuffer, DemodBufferLen);
474 size = DemodBufferLen;
1e090a61 475 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
b41534d1 476 if (errCnt<0){
477 PrintAndLog("Error during decode:%d", errCnt);
478 return 0;
479 }
480 if (errCnt>maxErr){
b4fb11ba 481 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
482 return 0;
483 }
b41534d1 484
485 if (errCnt>0){
2767fc02 486 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
b41534d1 487 }
488 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
2767fc02 489 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
b41534d1 490
491 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
b4fb11ba 492 return 1;
eb191de6 493}
494
b41534d1 495//by marshmellow
496// - ASK Demod then Biphase decode GraphBuffer samples
497int ASKbiphaseDemod(const char *Cmd, bool verbose)
498{
499 //ask raw demod GraphBuffer first
500 int offset=0, clk=0, invert=0, maxErr=0, ans=0;
501 ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
502 if (ans>0)
fef74fdc 503 ans = ASKDemod(Cmd+1, FALSE, FALSE, 0);
b41534d1 504 else
fef74fdc 505 ans = ASKDemod(Cmd, FALSE, FALSE, 0);
b41534d1 506 if (!ans) {
fef74fdc 507 if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans);
b41534d1 508 return 0;
509 }
510
511 //attempt to Biphase decode DemodBuffer
512 size_t size = DemodBufferLen;
513 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
514 memcpy(BitStream, DemodBuffer, DemodBufferLen);
fef74fdc 515 int errCnt = BiphaseRawDecode(BitStream, &size, offset, 0);
b41534d1 516 if (errCnt < 0){
517 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
518 return 0;
519 }
520 if (errCnt > maxErr) {
521 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
522 return 0;
523 }
524 //success set DemodBuffer and return
525 setDemodBuf(BitStream, size, 0);
526 if (g_debugMode || verbose){
527 PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
528 printDemodBuff();
529 }
530 return 1;
531}
532//by marshmellow - see ASKbiphaseDemod
533int Cmdaskbiphdemod(const char *Cmd)
534{
e0165dcf 535 char cmdp = param_getchar(Cmd, 0);
fef74fdc 536 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
537 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
e0165dcf 538 PrintAndLog(" [offset], offset to begin biphase, default=0");
539 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
540 PrintAndLog(" <invert>, 1 to invert output");
541 PrintAndLog(" [set maximum allowed errors], default = 100");
fef74fdc 542 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
e0165dcf 543 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
544 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
545 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
546 PrintAndLog(" NOTE: any other arg must have previous args set to work");
547 PrintAndLog("");
548 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
549 PrintAndLog("");
fef74fdc 550 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
551 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
552 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
553 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
554 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
555 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");
556 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");
e0165dcf 557 return 0;
558 }
559 return ASKbiphaseDemod(Cmd, TRUE);
b41534d1 560}
561
8d960002 562//by marshmellow
563//attempts to demodulate and identify a G_Prox_II verex/chubb card
564//WARNING: if it fails during some points it will destroy the DemodBuffer data
565// but will leave the GraphBuffer intact.
566//if successful it will push askraw data back to demod buffer ready for emulation
567int CmdG_Prox_II_Demod(const char *Cmd)
568{
e0165dcf 569 if (!ASKbiphaseDemod(Cmd, FALSE)){
570 if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
571 return 0;
572 }
573 size_t size = DemodBufferLen;
574 //call lfdemod.c demod for gProxII
575 int ans = gProxII_Demod(DemodBuffer, &size);
576 if (ans < 0){
577 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
578 return 0;
579 }
580 //got a good demod
581 uint32_t ByteStream[65] = {0x00};
582 uint8_t xorKey=0;
583 uint8_t keyCnt=0;
584 uint8_t bitCnt=0;
585 uint8_t ByteCnt=0;
586 size_t startIdx = ans + 6; //start after preamble
587 for (size_t idx = 0; idx<size-6; idx++){
588 if ((idx+1) % 5 == 0){
589 //spacer bit - should be 0
590 if (DemodBuffer[startIdx+idx] != 0) {
591 if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
592 return 0;
593 }
594 continue;
595 }
596 if (keyCnt<8){ //lsb first
597 xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
598 keyCnt++;
599 if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
600 continue;
601 }
602 //lsb first
603 ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
604 bitCnt++;
605 if (bitCnt % 8 == 0){
606 if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
607 bitCnt=0;
608 ByteCnt++;
609 }
610 }
611 for (uint8_t i = 0; i < ByteCnt; i++){
612 ByteStream[i] ^= xorKey; //xor
613 if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
614 }
615 //now ByteStream contains 64 bytes of decrypted raw tag data
616 //
617 uint8_t fmtLen = ByteStream[0]>>2;
618 uint32_t FC = 0;
619 uint32_t Card = 0;
620 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
621 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
622 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
623
624 if (fmtLen==36){
625 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
626 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
627 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
628 } else if(fmtLen==26){
629 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
630 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
631 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
632 } else {
633 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
634 }
635 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
636 setDemodBuf(DemodBuffer+ans, 96, 0);
637 return 1;
8d960002 638}
639
fef74fdc 640//by marshmellow - see ASKDemod
4ac906d1 641int Cmdaskrawdemod(const char *Cmd)
642{
e0165dcf 643 char cmdp = param_getchar(Cmd, 0);
fef74fdc 644 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
645 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
e0165dcf 646 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
647 PrintAndLog(" <invert>, 1 to invert output");
648 PrintAndLog(" [set maximum allowed errors], default = 100");
fef74fdc 649 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
e0165dcf 650 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
651 PrintAndLog("");
fef74fdc 652 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
653 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
654 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
655 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
656 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
657 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");
658 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");
e0165dcf 659 return 0;
660 }
fef74fdc 661 return ASKDemod(Cmd, TRUE, FALSE, 0);
4ac906d1 662}
663
73d04bb4 664int AutoCorrelate(int window, bool SaveGrph, bool verbose)
7fe9b0b7 665{
e0165dcf 666 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
667 size_t Correlation = 0;
668 int maxSum = 0;
669 int lastMax = 0;
670 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
671 for (int i = 0; i < GraphTraceLen - window; ++i) {
672 int sum = 0;
673 for (int j = 0; j < window; ++j) {
674 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
675 }
676 CorrelBuffer[i] = sum;
677 if (sum >= maxSum-100 && sum <= maxSum+100){
678 //another max
679 Correlation = i-lastMax;
680 lastMax = i;
681 if (sum > maxSum) maxSum = sum;
682 } else if (sum > maxSum){
683 maxSum=sum;
684 lastMax = i;
685 }
686 }
687 if (Correlation==0){
688 //try again with wider margin
689 for (int i = 0; i < GraphTraceLen - window; i++){
690 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
691 //another max
692 Correlation = i-lastMax;
693 lastMax = i;
694 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
695 }
696 }
697 }
698 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
699
700 if (SaveGrph){
701 GraphTraceLen = GraphTraceLen - window;
702 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
703 RepaintGraphWindow();
704 }
705 return Correlation;
73d04bb4 706}
7fe9b0b7 707
9f7bbd24 708int usage_data_autocorr(void)
709{
e0165dcf 710 //print help
711 PrintAndLog("Usage: data autocorr [window] [g]");
712 PrintAndLog("Options: ");
713 PrintAndLog(" h This help");
714 PrintAndLog(" [window] window length for correlation - default = 4000");
715 PrintAndLog(" g save back to GraphBuffer (overwrite)");
716 return 0;
9f7bbd24 717}
718
73d04bb4 719int CmdAutoCorr(const char *Cmd)
720{
e0165dcf 721 char cmdp = param_getchar(Cmd, 0);
722 if (cmdp == 'h' || cmdp == 'H')
723 return usage_data_autocorr();
724 int window = 4000; //set default
725 char grph=0;
726 bool updateGrph = FALSE;
727 sscanf(Cmd, "%i %c", &window, &grph);
728
729 if (window >= GraphTraceLen) {
730 PrintAndLog("window must be smaller than trace (%d samples)",
731 GraphTraceLen);
732 return 0;
733 }
734 if (grph == 'g') updateGrph=TRUE;
735 return AutoCorrelate(window, updateGrph, TRUE);
7fe9b0b7 736}
737
738int CmdBitsamples(const char *Cmd)
739{
e0165dcf 740 int cnt = 0;
741 uint8_t got[12288];
952a8bb5 742
e0165dcf 743 GetFromBigBuf(got,sizeof(got),0);
744 WaitForResponse(CMD_ACK,NULL);
7fe9b0b7 745
e0165dcf 746 for (int j = 0; j < sizeof(got); j++) {
747 for (int k = 0; k < 8; k++) {
748 if(got[j] & (1 << (7 - k))) {
749 GraphBuffer[cnt++] = 1;
750 } else {
751 GraphBuffer[cnt++] = 0;
752 }
753 }
754 }
755 GraphTraceLen = cnt;
756 RepaintGraphWindow();
757 return 0;
7fe9b0b7 758}
759
7fe9b0b7 760int CmdBuffClear(const char *Cmd)
761{
e0165dcf 762 UsbCommand c = {CMD_BUFF_CLEAR};
763 SendCommand(&c);
764 ClearGraph(true);
765 return 0;
7fe9b0b7 766}
767
768int CmdDec(const char *Cmd)
769{
e0165dcf 770 for (int i = 0; i < (GraphTraceLen / 2); ++i)
771 GraphBuffer[i] = GraphBuffer[i * 2];
772 GraphTraceLen /= 2;
773 PrintAndLog("decimated by 2");
774 RepaintGraphWindow();
775 return 0;
7fe9b0b7 776}
698b649e
MHS		 777/**
778 * Undecimate - I'd call it 'interpolate', but we'll save that
779 * name until someone does an actual interpolation command, not just
780 * blindly repeating samples
781 * @param Cmd
782 * @return
783 */
784int CmdUndec(const char *Cmd)
785{
c856ceae
MHS		 786 if(param_getchar(Cmd, 0) == 'h')
787 {
788 PrintAndLog("Usage: data undec [factor]");
789 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
790 PrintAndLog("Options: ");
791 PrintAndLog(" h This help");
792 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
793 PrintAndLog("Example: 'data undec 3'");
794 return 0;
795 }
796
797 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
698b649e
MHS		 798 //We have memory, don't we?
799 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
c856ceae
MHS		 800 uint32_t g_index = 0 ,s_index = 0;
801 while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
698b649e 802 {
c856ceae
MHS		 803 int count = 0;
804 for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
805 swap[s_index+count] = GraphBuffer[g_index];
806 s_index+=count;
698b649e 807 }
698b649e 808
c856ceae
MHS		 809 memcpy(GraphBuffer,swap, s_index * sizeof(int));
810 GraphTraceLen = s_index;
811 RepaintGraphWindow();
698b649e
MHS		 812 return 0;
813}
7fe9b0b7 814
ec75f5c1 815//by marshmellow
816//shift graph zero up or down based on input + or -
817int CmdGraphShiftZero(const char *Cmd)
818{
819
e0165dcf 820 int shift=0;
821 //set options from parameters entered with the command
822 sscanf(Cmd, "%i", &shift);
823 int shiftedVal=0;
824 for(int i = 0; i<GraphTraceLen; i++){
825 shiftedVal=GraphBuffer[i]+shift;
826 if (shiftedVal>127)
827 shiftedVal=127;
828 else if (shiftedVal<-127)
829 shiftedVal=-127;
830 GraphBuffer[i]= shiftedVal;
831 }
832 CmdNorm("");
833 return 0;
ec75f5c1 834}
835
6de43508 836//by marshmellow
837//use large jumps in read samples to identify edges of waves and then amplify that wave to max
2767fc02 838//similar to dirtheshold, threshold commands
6de43508 839//takes a threshold length which is the measured length between two samples then determines an edge
840int CmdAskEdgeDetect(const char *Cmd)
841{
e0165dcf 842 int thresLen = 25;
843 sscanf(Cmd, "%i", &thresLen);
49bbc60a 844
e0165dcf 845 for(int i = 1; i<GraphTraceLen; i++){
846 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
49bbc60a 847 GraphBuffer[i-1] = 127;
e0165dcf 848 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
49bbc60a 849 GraphBuffer[i-1] = -127;
e0165dcf 850 }
851 RepaintGraphWindow();
e0165dcf 852 return 0;
6de43508 853}
854
7fe9b0b7 855/* Print our clock rate */
ba1a299c 856// uses data from graphbuffer
f3bf15e4 857// adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
7fe9b0b7 858int CmdDetectClockRate(const char *Cmd)
859{
f3bf15e4 860 char cmdp = param_getchar(Cmd, 0);
fef74fdc 861 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
862 PrintAndLog("Usage: data detectclock [modulation] <clock>");
f3bf15e4 863 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
fef74fdc 864 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
f3bf15e4 865 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
866 PrintAndLog("");
867 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
868 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
869 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
870 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
871 }
872 int ans=0;
873 if (cmdp == 'a'){
fef74fdc 874 ans = GetAskClock(Cmd+1, true, false);
f3bf15e4 875 } else if (cmdp == 'f'){
876 ans = GetFskClock("", true, false);
877 } else if (cmdp == 'n'){
878 ans = GetNrzClock("", true, false);
879 } else if (cmdp == 'p'){
880 ans = GetPskClock("", true, false);
881 } else {
882 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
883 }
884 return ans;
7fe9b0b7 885}
66707a3b 886
2767fc02 887char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
888{
889 char *fskType;
890 if (fchigh==10 && fclow==8){
891 if (invert) //fsk2a
892 fskType = "FSK2a";
893 else //fsk2
894 fskType = "FSK2";
895 } else if (fchigh == 8 && fclow == 5) {
896 if (invert)
897 fskType = "FSK1";
898 else
899 fskType = "FSK1a";
900 } else {
901 fskType = "FSK??";
902 }
903 return fskType;
904}
905
2fc2150e 906//by marshmellow
eb191de6 907//fsk raw demod and print binary
6de43508 908//takes 4 arguments - Clock, invert, fchigh, fclow
909//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
4ac906d1 910int FSKrawDemod(const char *Cmd, bool verbose)
b3b70669 911{
e0165dcf 912 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
913 //set defaults
914 int rfLen = 0;
915 int invert = 0;
916 int fchigh = 0;
917 int fclow = 0;
918
919 //set options from parameters entered with the command
920 sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
921
922 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
923 if (rfLen==1){
2eec55c8 924 invert = 1; //if invert option only is used
e0165dcf 925 rfLen = 0;
926 }
927 }
928
929 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
930 size_t BitLen = getFromGraphBuf(BitStream);
931 if (BitLen==0) return 0;
932 //get field clock lengths
933 uint16_t fcs=0;
e0165dcf 934 if (fchigh==0 || fclow == 0){
2eec55c8 935 fcs = countFC(BitStream, BitLen, 1);
e0165dcf 936 if (fcs==0){
937 fchigh=10;
938 fclow=8;
939 }else{
940 fchigh = (fcs >> 8) & 0xFF;
941 fclow = fcs & 0xFF;
942 }
943 }
944 //get bit clock length
945 if (rfLen==0){
946 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
947 if (rfLen == 0) rfLen = 50;
948 }
e0165dcf 949 int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
950 if (size>0){
951 setDemodBuf(BitStream,size,0);
952
953 // Now output the bitstream to the scrollback by line of 16 bits
2767fc02 954 if (verbose || g_debugMode) {
955 PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
956 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
957 printDemodBuff();
e0165dcf 958 }
959
960 return 1;
961 } else{
2767fc02 962 if (g_debugMode) PrintAndLog("no FSK data found");
e0165dcf 963 }
964 return 0;
b3b70669 965}
966
4ac906d1 967//by marshmellow
968//fsk raw demod and print binary
969//takes 4 arguments - Clock, invert, fchigh, fclow
970//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
971int CmdFSKrawdemod(const char *Cmd)
972{
e0165dcf 973 char cmdp = param_getchar(Cmd, 0);
974 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
975 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
976 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
977 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
978 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
979 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
980 PrintAndLog("");
981 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
982 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
983 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
984 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
985 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
986 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
987 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
988 return 0;
989 }
990 return FSKrawDemod(Cmd, TRUE);
4ac906d1 991}
992
eb191de6 993//by marshmellow (based on existing demod + holiman's refactor)
994//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
995//print full HID Prox ID and some bit format details if found
b3b70669 996int CmdFSKdemodHID(const char *Cmd)
997{
e0165dcf 998 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
999 uint32_t hi2=0, hi=0, lo=0;
1000
1001 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1002 size_t BitLen = getFromGraphBuf(BitStream);
1003 if (BitLen==0) return 0;
1004 //get binary from fsk wave
1005 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1006 if (idx<0){
1007 if (g_debugMode){
1008 if (idx==-1){
1009 PrintAndLog("DEBUG: Just Noise Detected");
1010 } else if (idx == -2) {
1011 PrintAndLog("DEBUG: Error demoding fsk");
1012 } else if (idx == -3) {
1013 PrintAndLog("DEBUG: Preamble not found");
1014 } else if (idx == -4) {
1015 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1016 } else {
1017 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1018 }
1019 }
1020 return 0;
1021 }
1022 if (hi2==0 && hi==0 && lo==0) {
1023 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1024 return 0;
1025 }
1026 if (hi2 != 0){ //extra large HID tags
1027 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1028 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1029 }
1030 else { //standard HID tags <38 bits
1031 uint8_t fmtLen = 0;
1032 uint32_t fc = 0;
1033 uint32_t cardnum = 0;
1034 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1035 uint32_t lo2=0;
1036 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1037 uint8_t idx3 = 1;
1038 while(lo2>1){ //find last bit set to 1 (format len bit)
1039 lo2=lo2>>1;
1040 idx3++;
1041 }
1042 fmtLen =idx3+19;
1043 fc =0;
1044 cardnum=0;
1045 if(fmtLen==26){
1046 cardnum = (lo>>1)&0xFFFF;
1047 fc = (lo>>17)&0xFF;
1048 }
1049 if(fmtLen==34){
1050 cardnum = (lo>>1)&0xFFFF;
1051 fc= ((hi&1)<<15)|(lo>>17);
1052 }
1053 if(fmtLen==35){
1054 cardnum = (lo>>1)&0xFFFFF;
1055 fc = ((hi&1)<<11)|(lo>>21);
1056 }
1057 }
1058 else { //if bit 38 is not set then 37 bit format is used
1059 fmtLen = 37;
1060 fc = 0;
1061 cardnum = 0;
1062 if(fmtLen == 37){
1063 cardnum = (lo>>1)&0x7FFFF;
1064 fc = ((hi&0xF)<<12)|(lo>>20);
1065 }
1066 }
1067 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1068 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1069 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1070 }
1071 setDemodBuf(BitStream,BitLen,idx);
1072 if (g_debugMode){
1073 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1074 printDemodBuff();
1075 }
1076 return 1;
ec75f5c1 1077}
1078
04d2721b 1079//by marshmellow
1080//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
ec75f5c1 1081//print full Paradox Prox ID and some bit format details if found
1082int CmdFSKdemodParadox(const char *Cmd)
1083{
e0165dcf 1084 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1085 uint32_t hi2=0, hi=0, lo=0;
1086
1087 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1088 size_t BitLen = getFromGraphBuf(BitStream);
1089 if (BitLen==0) return 0;
1090 //get binary from fsk wave
1091 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1092 if (idx<0){
1093 if (g_debugMode){
1094 if (idx==-1){
1095 PrintAndLog("DEBUG: Just Noise Detected");
1096 } else if (idx == -2) {
1097 PrintAndLog("DEBUG: Error demoding fsk");
1098 } else if (idx == -3) {
1099 PrintAndLog("DEBUG: Preamble not found");
1100 } else if (idx == -4) {
1101 PrintAndLog("DEBUG: Error in Manchester data");
1102 } else {
1103 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1104 }
1105 }
1106 return 0;
1107 }
1108 if (hi2==0 && hi==0 && lo==0){
1109 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1110 return 0;
1111 }
1112 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1113 uint32_t cardnum = (lo>>10)&0xFFFF;
1114 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1115 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1116 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1117
1118 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1119 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1120 setDemodBuf(BitStream,BitLen,idx);
1121 if (g_debugMode){
1122 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1123 printDemodBuff();
1124 }
1125 return 1;
b3b70669 1126}
1127
2fc2150e 1128//by marshmellow
eb191de6 1129//IO-Prox demod - FSK RF/64 with preamble of 000000001
1130//print ioprox ID and some format details
b3b70669 1131int CmdFSKdemodIO(const char *Cmd)
1132{
e0165dcf 1133 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1134 //set defaults
1135 int idx=0;
1136 //something in graphbuffer?
1137 if (GraphTraceLen < 65) {
1138 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1139 return 0;
1140 }
1141 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1142 size_t BitLen = getFromGraphBuf(BitStream);
1143 if (BitLen==0) return 0;
1144
1145 //get binary from fsk wave
1146 idx = IOdemodFSK(BitStream,BitLen);
1147 if (idx<0){
1148 if (g_debugMode){
1149 if (idx==-1){
1150 PrintAndLog("DEBUG: Just Noise Detected");
1151 } else if (idx == -2) {
1152 PrintAndLog("DEBUG: not enough samples");
1153 } else if (idx == -3) {
1154 PrintAndLog("DEBUG: error during fskdemod");
1155 } else if (idx == -4) {
1156 PrintAndLog("DEBUG: Preamble not found");
1157 } else if (idx == -5) {
1158 PrintAndLog("DEBUG: Separator bits not found");
1159 } else {
1160 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1161 }
1162 }
1163 return 0;
1164 }
1165 if (idx==0){
2767fc02 1166 if (g_debugMode){
e0165dcf 1167 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
2767fc02 1168 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
e0165dcf 1169 }
1170 return 0;
1171 }
1172 //Index map
1173 //0 10 20 30 40 50 60
1174 //| | | | | | |
1175 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1176 //-----------------------------------------------------------------------------
1177 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1178 //
1179 //XSF(version)facility:codeone+codetwo (raw)
1180 //Handle the data
1181 if (idx+64>BitLen) {
2767fc02 1182 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
e0165dcf 1183 return 0;
1184 }
1185 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]);
1186 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]);
1187 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]);
1188 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]);
1189 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]);
1190 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]);
1191 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]);
1192
1193 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1194 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1195 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1196 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1197 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1198 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1199 uint16_t calccrc = 0;
1200
1201 for (uint8_t i=1; i<6; ++i){
1202 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
e0165dcf 1203 }
1204 calccrc &= 0xff;
1205 calccrc = 0xff - calccrc;
1206
1207 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1208
1209 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1210 setDemodBuf(BitStream,64,idx);
1211 if (g_debugMode){
1212 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1213 printDemodBuff();
1214 }
1215 return 1;
b3b70669 1216}
1e090a61 1217
1e090a61 1218//by marshmellow
1219//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1220//print full AWID Prox ID and some bit format details if found
1221int CmdFSKdemodAWID(const char *Cmd)
1222{
1223
e0165dcf 1224 //int verbose=1;
1225 //sscanf(Cmd, "%i", &verbose);
1226
1227 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1228 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1229 size_t size = getFromGraphBuf(BitStream);
1230 if (size==0) return 0;
1231
1232 //get binary from fsk wave
1233 int idx = AWIDdemodFSK(BitStream, &size);
1234 if (idx<=0){
1235 if (g_debugMode==1){
1236 if (idx == -1)
1237 PrintAndLog("DEBUG: Error - not enough samples");
1238 else if (idx == -2)
1239 PrintAndLog("DEBUG: Error - only noise found");
1240 else if (idx == -3)
1241 PrintAndLog("DEBUG: Error - problem during FSK demod");
1242 else if (idx == -4)
1243 PrintAndLog("DEBUG: Error - AWID preamble not found");
1244 else if (idx == -5)
1245 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1246 else
1247 PrintAndLog("DEBUG: Error %d",idx);
1248 }
1249 return 0;
1250 }
1251
1252 // Index map
1253 // 0 10 20 30 40 50 60
1254 // | | | | | | |
1255 // 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
1256 // -----------------------------------------------------------------------------
1257 // 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
1258 // 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
1259 // |---26 bit---| |-----117----||-------------142-------------|
1260 // b = format bit len, o = odd parity of last 3 bits
1261 // f = facility code, c = card number
1262 // w = wiegand parity
1263 // (26 bit format shown)
1e090a61 1264
e0165dcf 1265 //get raw ID before removing parities
1266 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1267 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1268 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1269 setDemodBuf(BitStream,96,idx);
1270
1271 size = removeParity(BitStream, idx+8, 4, 1, 88);
1272 if (size != 66){
1273 if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1274 return 0;
1275 }
1276 // ok valid card found!
1277
1278 // Index map
1279 // 0 10 20 30 40 50 60
1280 // | | | | | | |
1281 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1282 // -----------------------------------------------------------------------------
1283 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1284 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1285 // |26 bit| |-117--| |-----142------|
1286 // b = format bit len, o = odd parity of last 3 bits
1287 // f = facility code, c = card number
1288 // w = wiegand parity
1289 // (26 bit format shown)
1290
1291 uint32_t fc = 0;
1292 uint32_t cardnum = 0;
1293 uint32_t code1 = 0;
1294 uint32_t code2 = 0;
1295 uint8_t fmtLen = bytebits_to_byte(BitStream,8);
1296 if (fmtLen==26){
1297 fc = bytebits_to_byte(BitStream+9, 8);
1298 cardnum = bytebits_to_byte(BitStream+17, 16);
1299 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1300 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1301 } else {
1302 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1303 if (fmtLen>32){
1304 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1305 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1306 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1307 } else{
1308 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1309 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1310 }
1311 }
1312 if (g_debugMode){
1313 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1314 printDemodBuff();
1315 }
1316 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1317 return 1;
1e090a61 1318}
1319
1320//by marshmellow
1321//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1322//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1323int CmdFSKdemodPyramid(const char *Cmd)
1324{
e0165dcf 1325 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1326 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1327 size_t size = getFromGraphBuf(BitStream);
1328 if (size==0) return 0;
1329
1330 //get binary from fsk wave
1331 int idx = PyramiddemodFSK(BitStream, &size);
1332 if (idx < 0){
1333 if (g_debugMode==1){
1334 if (idx == -5)
1335 PrintAndLog("DEBUG: Error - not enough samples");
1336 else if (idx == -1)
1337 PrintAndLog("DEBUG: Error - only noise found");
1338 else if (idx == -2)
1339 PrintAndLog("DEBUG: Error - problem during FSK demod");
1340 else if (idx == -3)
1341 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1342 else if (idx == -4)
1343 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1344 else
1345 PrintAndLog("DEBUG: Error - idx: %d",idx);
1346 }
1347 return 0;
1348 }
1349 // Index map
1350 // 0 10 20 30 40 50 60
1351 // | | | | | | |
1352 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1353 // -----------------------------------------------------------------------------
1354 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1355 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1356
1357 // 64 70 80 90 100 110 120
1358 // | | | | | | |
1359 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1360 // -----------------------------------------------------------------------------
1361 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1362 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1363 // |---115---||---------71---------|
1364 // s = format start bit, o = odd parity of last 7 bits
1365 // f = facility code, c = card number
1366 // w = wiegand parity, x = extra space for other formats
1367 // p = unknown checksum
1368 // (26 bit format shown)
1369
1370 //get bytes for checksum calc
1371 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1372 uint8_t csBuff[14] = {0x00};
1373 for (uint8_t i = 0; i < 13; i++){
1374 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1375 }
1376 //check checksum calc
1377 //checksum calc thanks to ICEMAN!!
1378 uint32_t checkCS = CRC8Maxim(csBuff,13);
1379
1380 //get raw ID before removing parities
1381 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1382 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1383 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1384 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1385 setDemodBuf(BitStream,128,idx);
1386
1387 size = removeParity(BitStream, idx+8, 8, 1, 120);
1388 if (size != 105){
1389 if (g_debugMode==1)
1390 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1391 return 0;
1392 }
1393
1394 // ok valid card found!
1395
1396 // Index map
1397 // 0 10 20 30 40 50 60 70
1398 // | | | | | | | |
1399 // 01234567890123456789012345678901234567890123456789012345678901234567890
1400 // -----------------------------------------------------------------------
1401 // 00000000000000000000000000000000000000000000000000000000000000000000000
1402 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1403
1404 // 71 80 90 100
1405 // | | | |
1406 // 1 2 34567890 1234567890123456 7 8901234
1407 // ---------------------------------------
1408 // 1 1 01110011 0000000001000110 0 1001010
1409 // s w ffffffff cccccccccccccccc w ppppppp
1410 // |--115-| |------71------|
1411 // s = format start bit, o = odd parity of last 7 bits
1412 // f = facility code, c = card number
1413 // w = wiegand parity, x = extra space for other formats
1414 // p = unknown checksum
1415 // (26 bit format shown)
1416
1417 //find start bit to get fmtLen
1418 int j;
1419 for (j=0; j<size; j++){
1420 if(BitStream[j]) break;
1421 }
1422 uint8_t fmtLen = size-j-8;
1423 uint32_t fc = 0;
1424 uint32_t cardnum = 0;
1425 uint32_t code1 = 0;
1426 //uint32_t code2 = 0;
1427 if (fmtLen==26){
1428 fc = bytebits_to_byte(BitStream+73, 8);
1429 cardnum = bytebits_to_byte(BitStream+81, 16);
1430 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1431 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);
1432 } else if (fmtLen==45){
1433 fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
1434 fc = bytebits_to_byte(BitStream+53, 10);
1435 cardnum = bytebits_to_byte(BitStream+63, 32);
1436 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1437 } else {
1438 cardnum = bytebits_to_byte(BitStream+81, 16);
1439 if (fmtLen>32){
1440 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1441 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1442 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1443 } else{
1444 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1445 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1446 }
1447 }
1448 if (checksum == checkCS)
1449 PrintAndLog("Checksum %02x passed", checksum);
1450 else
1451 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1452
1453 if (g_debugMode){
1454 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1455 printDemodBuff();
1456 }
1457 return 1;
1e090a61 1458}
1459
e770c648 1460//by marshmellow
1461//attempt to psk1 demod graph buffer
4ac906d1 1462int PSKDemod(const char *Cmd, bool verbose)
e770c648 1463{
e0165dcf 1464 int invert=0;
1465 int clk=0;
1466 int maxErr=100;
1467 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1468 if (clk==1){
1469 invert=1;
1470 clk=0;
1471 }
1472 if (invert != 0 && invert != 1) {
1473 if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
1474 return 0;
1475 }
1476 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1477 size_t BitLen = getFromGraphBuf(BitStream);
1478 if (BitLen==0) return -1;
2eec55c8 1479 uint8_t carrier=countFC(BitStream, BitLen, 0);
e0165dcf 1480 if (carrier!=2 && carrier!=4 && carrier!=8){
1481 //invalid carrier
1482 return 0;
1483 }
1484 int errCnt=0;
1485 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1486 if (errCnt > maxErr){
2767fc02 1487 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
e0165dcf 1488 return 0;
1489 }
1490 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
2767fc02 1491 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
e0165dcf 1492 return 0;
1493 }
2767fc02 1494 if (verbose || g_debugMode){
1495 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
e0165dcf 1496 if (errCnt>0){
2767fc02 1497 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
e0165dcf 1498 }
1499 }
1500 //prime demod buffer for output
1501 setDemodBuf(BitStream,BitLen,0);
1502 return 1;
4118b74d 1503}
e770c648 1504
4118b74d 1505// Indala 26 bit decode
1506// by marshmellow
1507// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1508int CmdIndalaDecode(const char *Cmd)
1509{
b4fb11ba 1510 int ans;
1511 if (strlen(Cmd)>0){
1512 ans = PSKDemod(Cmd, 0);
1513 } else{ //default to RF/32
1514 ans = PSKDemod("32", 0);
1515 }
4118b74d 1516
7a8a982b 1517 if (!ans){
ec75f5c1 1518 if (g_debugMode==1)
b4fb11ba 1519 PrintAndLog("Error1: %d",ans);
ba1a299c 1520 return 0;
1521 }
1522 uint8_t invert=0;
2b3af97d 1523 ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
ba1a299c 1524 if (ans < 1) {
ec75f5c1 1525 if (g_debugMode==1)
b4fb11ba 1526 PrintAndLog("Error2: %d",ans);
ba1a299c 1527 return -1;
1528 }
a1d17964 1529 char showbits[251]={0x00};
84871873 1530 if (invert)
b4fb11ba 1531 if (g_debugMode==1)
e0165dcf 1532 PrintAndLog("Had to invert bits");
ec75f5c1 1533
ba1a299c 1534 //convert UID to HEX
1535 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1536 int idx;
1537 uid1=0;
1538 uid2=0;
1539 PrintAndLog("BitLen: %d",DemodBufferLen);
1540 if (DemodBufferLen==64){
1541 for( idx=0; idx<64; idx++) {
1542 uid1=(uid1<<1)|(uid2>>31);
1543 if (DemodBuffer[idx] == 0) {
1544 uid2=(uid2<<1)|0;
1545 showbits[idx]='0';
1546 } else {
1547 uid2=(uid2<<1)|1;
1548 showbits[idx]='1';
1549 }
1550 }
1551 showbits[idx]='\0';
1552 PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
1553 }
1554 else {
1555 uid3=0;
1556 uid4=0;
1557 uid5=0;
1558 uid6=0;
1559 uid7=0;
1560 for( idx=0; idx<DemodBufferLen; idx++) {
1561 uid1=(uid1<<1)|(uid2>>31);
1562 uid2=(uid2<<1)|(uid3>>31);
1563 uid3=(uid3<<1)|(uid4>>31);
1564 uid4=(uid4<<1)|(uid5>>31);
1565 uid5=(uid5<<1)|(uid6>>31);
1566 uid6=(uid6<<1)|(uid7>>31);
1567 if (DemodBuffer[idx] == 0) {
1568 uid7=(uid7<<1)|0;
1569 showbits[idx]='0';
1570 }
1571 else {
1572 uid7=(uid7<<1)|1;
1573 showbits[idx]='1';
1574 }
1575 }
1576 showbits[idx]='\0';
1577 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1578 }
b4fb11ba 1579 if (g_debugMode){
1580 PrintAndLog("DEBUG: printing demodbuffer:");
1581 printDemodBuff();
1582 }
ba1a299c 1583 return 1;
4118b74d 1584}
1585
411105e0 1586int CmdPSKNexWatch(const char *Cmd)
1587{
1588 if (!PSKDemod("", false)) return 0;
1589 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};
1590 size_t startIdx = 0, size = DemodBufferLen;
1591 bool invert = false;
1592 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1593 // if didn't find preamble try again inverting
1594 if (!PSKDemod("1", false)) return 0;
1595 size = DemodBufferLen;
1596 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1597 invert = true;
1598 }
1599 if (size != 128) return 0;
1600 setDemodBuf(DemodBuffer, size, startIdx+4);
1601 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1602 //get ID
1603 uint32_t ID = 0;
1604 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1605 for (uint8_t idx=0; idx<8; idx++){
1606 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1607 }
1608 }
1609 //parity check (TBD)
1610
1611 //checksum check (TBD)
1612
1613 //output
1614 PrintAndLog("NexWatch ID: %d", ID);
1615 if (invert){
1616 PrintAndLog("Had to Invert - probably NexKey");
1617 for (uint8_t idx=0; idx<size; idx++)
1618 DemodBuffer[idx] ^= 1;
1619 }
1620
1621 CmdPrintDemodBuff("x");
1622 return 1;
1623}
1624
04d2721b 1625// by marshmellow
e770c648 1626// takes 3 arguments - clock, invert, maxErr as integers
1627// attempts to demodulate nrz only
1628// prints binary found and saves in demodbuffer for further commands
b4a2fcf6 1629int NRZrawDemod(const char *Cmd, bool verbose)
e770c648 1630{
e0165dcf 1631 int invert=0;
1632 int clk=0;
1633 int maxErr=100;
1634 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1635 if (clk==1){
1636 invert=1;
1637 clk=0;
1638 }
1639 if (invert != 0 && invert != 1) {
1640 PrintAndLog("Invalid argument: %s", Cmd);
1641 return 0;
1642 }
1643 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1644 size_t BitLen = getFromGraphBuf(BitStream);
1645 if (BitLen==0) return 0;
1646 int errCnt=0;
1647 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
1648 if (errCnt > maxErr){
1649 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1650 return 0;
1651 }
2eec55c8 1652 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
e0165dcf 1653 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1654 return 0;
1655 }
1656 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1657 //prime demod buffer for output
1658 setDemodBuf(BitStream,BitLen,0);
1659
2767fc02 1660 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
e0165dcf 1661 if (verbose || g_debugMode) {
1662 PrintAndLog("NRZ demoded bitstream:");
1663 // Now output the bitstream to the scrollback by line of 16 bits
1664 printDemodBuff();
1665 }
1666 return 1;
b4a2fcf6 1667}
1668
1669int CmdNRZrawDemod(const char *Cmd)
1670{
e0165dcf 1671 char cmdp = param_getchar(Cmd, 0);
1672 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1673 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
1674 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1675 PrintAndLog(" <invert>, 1 for invert output");
1676 PrintAndLog(" [set maximum allowed errors], default = 100.");
1677 PrintAndLog("");
1678 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
1679 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1680 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1681 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1682 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");
1683 return 0;
1684 }
1685 return NRZrawDemod(Cmd, TRUE);
e770c648 1686}
1687
1688// by marshmellow
1689// takes 3 arguments - clock, invert, maxErr as integers
04d2721b 1690// attempts to demodulate psk only
1691// prints binary found and saves in demodbuffer for further commands
e770c648 1692int CmdPSK1rawDemod(const char *Cmd)
4118b74d 1693{
e0165dcf 1694 int ans;
1695 char cmdp = param_getchar(Cmd, 0);
1696 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1697 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
1698 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1699 PrintAndLog(" <invert>, 1 for invert output");
1700 PrintAndLog(" [set maximum allowed errors], default = 100.");
1701 PrintAndLog("");
1702 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
1703 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1704 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1705 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
1706 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");
1707 return 0;
1708 }
1709 ans = PSKDemod(Cmd, TRUE);
1710 //output
1711 if (!ans){
1712 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1713 return 0;
1714 }
7a8a982b 1715
2767fc02 1716 PrintAndLog("PSK1 demoded bitstream:");
e0165dcf 1717 // Now output the bitstream to the scrollback by line of 16 bits
1718 printDemodBuff();
1719 return 1;
4118b74d 1720}
1721
04d2721b 1722// by marshmellow
19ff0210 1723// takes same args as cmdpsk1rawdemod
04d2721b 1724int CmdPSK2rawDemod(const char *Cmd)
1725{
e0165dcf 1726 int ans=0;
1727 char cmdp = param_getchar(Cmd, 0);
1728 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
1729 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1730 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1731 PrintAndLog(" <invert>, 1 for invert output");
1732 PrintAndLog(" [set maximum allowed errors], default = 100.");
1733 PrintAndLog("");
1734 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1735 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1736 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1737 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1738 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");
1739 return 0;
1740 }
1741 ans=PSKDemod(Cmd, TRUE);
1742 if (!ans){
1743 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1744 return 0;
1745 }
1746 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1747 PrintAndLog("PSK2 demoded bitstream:");
1748 // Now output the bitstream to the scrollback by line of 16 bits
1749 printDemodBuff();
1750 return 1;
04d2721b 1751}
1752
19ff0210 1753// by marshmellow - combines all raw demod functions into one menu command
1754int CmdRawDemod(const char *Cmd)
1755{
1756 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1757
23f0a7d8 1758 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
19ff0210 1759 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
b41534d1 1760 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1761 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
19ff0210 1762 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1763 PrintAndLog(" <options> see specific modulation help for optional parameters");
1764 PrintAndLog("");
1fbf8956 1765 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
19ff0210 1766 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
b41534d1 1767 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
19ff0210 1768 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1769 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1770 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1771 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1772 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1773 return 0;
1774 }
1775 char cmdp2 = Cmd[1];
1776 int ans = 0;
1777 if (cmdp == 'f' && cmdp2 == 's'){
f8f894a5 1778 ans = CmdFSKrawdemod(Cmd+2);
b41534d1 1779 } else if(cmdp == 'a' && cmdp2 == 'b'){
f8f894a5 1780 ans = Cmdaskbiphdemod(Cmd+2);
19ff0210 1781 } else if(cmdp == 'a' && cmdp2 == 'm'){
f8f894a5 1782 ans = Cmdaskmandemod(Cmd+2);
19ff0210 1783 } else if(cmdp == 'a' && cmdp2 == 'r'){
f8f894a5 1784 ans = Cmdaskrawdemod(Cmd+2);
19ff0210 1785 } else if(cmdp == 'n' && cmdp2 == 'r'){
f8f894a5 1786 ans = CmdNRZrawDemod(Cmd+2);
19ff0210 1787 } else if(cmdp == 'p' && cmdp2 == '1'){
f8f894a5 1788 ans = CmdPSK1rawDemod(Cmd+2);
19ff0210 1789 } else if(cmdp == 'p' && cmdp2 == '2'){
f8f894a5 1790 ans = CmdPSK2rawDemod(Cmd+2);
19ff0210 1791 } else {
1792 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1793 }
1794 return ans;
1795}
1796
7fe9b0b7 1797int CmdGrid(const char *Cmd)
1798{
e0165dcf 1799 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1800 PlotGridXdefault= PlotGridX;
1801 PlotGridYdefault= PlotGridY;
1802 RepaintGraphWindow();
1803 return 0;
7fe9b0b7 1804}
1805
1806int CmdHexsamples(const char *Cmd)
1807{
e0165dcf 1808 int i, j;
1809 int requested = 0;
1810 int offset = 0;
1811 char string_buf[25];
1812 char* string_ptr = string_buf;
1813 uint8_t got[BIGBUF_SIZE];
1814
1815 sscanf(Cmd, "%i %i", &requested, &offset);
1816
1817 /* if no args send something */
1818 if (requested == 0) {
1819 requested = 8;
1820 }
1821 if (offset + requested > sizeof(got)) {
1822 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1823 return 0;
1824 }
1825
1826 GetFromBigBuf(got,requested,offset);
1827 WaitForResponse(CMD_ACK,NULL);
1828
1829 i = 0;
1830 for (j = 0; j < requested; j++) {
1831 i++;
1832 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1833 if (i == 8) {
1834 *(string_ptr - 1) = '\0'; // remove the trailing space
1835 PrintAndLog("%s", string_buf);
1836 string_buf[0] = '\0';
1837 string_ptr = string_buf;
1838 i = 0;
1839 }
1840 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1841 *(string_ptr - 1) = '\0';
1842 PrintAndLog("%s", string_buf);
1843 string_buf[0] = '\0';
1844 }
1845 }
1846 return 0;
7fe9b0b7 1847}
1848
7fe9b0b7 1849int CmdHide(const char *Cmd)
1850{
e0165dcf 1851 HideGraphWindow();
1852 return 0;
7fe9b0b7 1853}
1854
78f5b1a7 1855//zero mean GraphBuffer
7fe9b0b7 1856int CmdHpf(const char *Cmd)
1857{
e0165dcf 1858 int i;
1859 int accum = 0;
7fe9b0b7 1860
e0165dcf 1861 for (i = 10; i < GraphTraceLen; ++i)
1862 accum += GraphBuffer[i];
1863 accum /= (GraphTraceLen - 10);
1864 for (i = 0; i < GraphTraceLen; ++i)
1865 GraphBuffer[i] -= accum;
7fe9b0b7 1866
e0165dcf 1867 RepaintGraphWindow();
1868 return 0;
7fe9b0b7 1869}
f6d9fb17
MHS		 1870typedef struct {
1871 uint8_t * buffer;
1872 uint32_t numbits;
1873 uint32_t position;
1874}BitstreamOut;
1875
1876bool _headBit( BitstreamOut *stream)
1877{
1878 int bytepos = stream->position >> 3; // divide by 8
1879 int bitpos = (stream->position++) & 7; // mask out 00000111
1880 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
1881}
1882
1883uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
1884{
1885 int i;
1886 uint8_t val = 0;
1887 for(i =0 ; i < bits_per_sample; i++)
1888 {
1889 val |= (_headBit(b) << (7-i));
1890 }
1891 return val;
1892}
7fe9b0b7 1893
1fbf8956 1894int getSamples(const char *Cmd, bool silent)
7fe9b0b7 1895{
e0165dcf 1896 //If we get all but the last byte in bigbuf,
1897 // we don't have to worry about remaining trash
1898 // in the last byte in case the bits-per-sample
1899 // does not line up on byte boundaries
1900
1901 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1902
1903 int n = strtol(Cmd, NULL, 0);
1904
1905 if (n == 0)
1906 n = sizeof(got);
1907
1908 if (n > sizeof(got))
1909 n = sizeof(got);
1910
1911 PrintAndLog("Reading %d bytes from device memory\n", n);
1912 GetFromBigBuf(got,n,0);
1913 PrintAndLog("Data fetched");
1914 UsbCommand response;
1915 WaitForResponse(CMD_ACK, &response);
1916 uint8_t bits_per_sample = 8;
1917
1918 //Old devices without this feature would send 0 at arg[0]
1919 if(response.arg[0] > 0)
1920 {
1921 sample_config *sc = (sample_config *) response.d.asBytes;
1922 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
1923 , sc->decimation);
1924 bits_per_sample = sc->bits_per_sample;
1925 }
1926 if(bits_per_sample < 8)
1927 {
1928 PrintAndLog("Unpacking...");
1929 BitstreamOut bout = { got, bits_per_sample * n, 0};
1930 int j =0;
e6432f05 1931 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
e0165dcf 1932 uint8_t sample = getByte(bits_per_sample, &bout);
1933 GraphBuffer[j] = ((int) sample )- 128;
1934 }
1935 GraphTraceLen = j;
1936 PrintAndLog("Unpacked %d samples" , j );
1937 }else
1938 {
1939 for (int j = 0; j < n; j++) {
1940 GraphBuffer[j] = ((int)got[j]) - 128;
1941 }
1942 GraphTraceLen = n;
1943 }
1944
1945 RepaintGraphWindow();
1946 return 0;
1fbf8956 1947}
1948
1949int CmdSamples(const char *Cmd)
1950{
e0165dcf 1951 return getSamples(Cmd, false);
7fe9b0b7 1952}
1953
d6a120a2
MHS		 1954int CmdTuneSamples(const char *Cmd)
1955{
3aa4014b 1956 int timeout = 0;
1957 printf("\nMeasuring antenna characteristics, please wait...");
ba1a299c 1958
3aa4014b 1959 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
1960 SendCommand(&c);
1961
1962 UsbCommand resp;
1963 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
1964 timeout++;
1965 printf(".");
1966 if (timeout > 7) {
1967 PrintAndLog("\nNo response from Proxmark. Aborting...");
1968 return 1;
1969 }
1970 }
1971
1972 int peakv, peakf;
1973 int vLf125, vLf134, vHf;
1974 vLf125 = resp.arg[0] & 0xffff;
1975 vLf134 = resp.arg[0] >> 16;
1976 vHf = resp.arg[1] & 0xffff;;
1977 peakf = resp.arg[2] & 0xffff;
1978 peakv = resp.arg[2] >> 16;
1979 PrintAndLog("");
1980 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
1981 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
1982 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
1983 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
0d0d0499 1984
2767fc02 1985 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
1986 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
1987 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1988 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
0d0d0499 1989
1990 if (peakv < LF_UNUSABLE_V)
3aa4014b 1991 PrintAndLog("# Your LF antenna is unusable.");
0d0d0499 1992 else if (peakv < LF_MARGINAL_V)
3aa4014b 1993 PrintAndLog("# Your LF antenna is marginal.");
0d0d0499 1994 if (vHf < HF_UNUSABLE_V)
3aa4014b 1995 PrintAndLog("# Your HF antenna is unusable.");
0d0d0499 1996 else if (vHf < HF_MARGINAL_V)
3aa4014b 1997 PrintAndLog("# Your HF antenna is marginal.");
1998
0d0d0499 1999 if (peakv >= LF_UNUSABLE_V) {
2000 for (int i = 0; i < 256; i++) {
2001 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2002 }
2003 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2004 PrintAndLog("\n");
2005 GraphTraceLen = 256;
2006 ShowGraphWindow();
abd16c45 2007 RepaintGraphWindow();
ba1a299c 2008 }
2009
b4fb11ba 2010 return 0;
d6a120a2
MHS		 2011}
2012
3aa4014b 2013
7fe9b0b7 2014int CmdLoad(const char *Cmd)
2015{
e0165dcf 2016 char filename[FILE_PATH_SIZE] = {0x00};
2017 int len = 0;
b915fda3 2018
e0165dcf 2019 len = strlen(Cmd);
2020 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2021 memcpy(filename, Cmd, len);
b915fda3 2022
e0165dcf 2023 FILE *f = fopen(filename, "r");
2024 if (!f) {
2025 PrintAndLog("couldn't open '%s'", filename);
2026 return 0;
2027 }
2028
2029 GraphTraceLen = 0;
2030 char line[80];
2031 while (fgets(line, sizeof (line), f)) {
2032 GraphBuffer[GraphTraceLen] = atoi(line);
2033 GraphTraceLen++;
2034 }
2035 fclose(f);
2036 PrintAndLog("loaded %d samples", GraphTraceLen);
2037 RepaintGraphWindow();
2038 return 0;
7fe9b0b7 2039}
2040
2041int CmdLtrim(const char *Cmd)
2042{
e0165dcf 2043 int ds = atoi(Cmd);
cc15a118 2044 if (GraphTraceLen<=0) return 0;
e0165dcf 2045 for (int i = ds; i < GraphTraceLen; ++i)
2046 GraphBuffer[i-ds] = GraphBuffer[i];
2047 GraphTraceLen -= ds;
7fe9b0b7 2048
e0165dcf 2049 RepaintGraphWindow();
2050 return 0;
7fe9b0b7 2051}
ec75f5c1 2052
2053// trim graph to input argument length
9ec1416a 2054int CmdRtrim(const char *Cmd)
2055{
e0165dcf 2056 int ds = atoi(Cmd);
9ec1416a 2057
e0165dcf 2058 GraphTraceLen = ds;
9ec1416a 2059
e0165dcf 2060 RepaintGraphWindow();
2061 return 0;
9ec1416a 2062}
7fe9b0b7 2063
7fe9b0b7 2064int CmdNorm(const char *Cmd)
2065{
e0165dcf 2066 int i;
2067 int max = INT_MIN, min = INT_MAX;
7fe9b0b7 2068
e0165dcf 2069 for (i = 10; i < GraphTraceLen; ++i) {
2070 if (GraphBuffer[i] > max)
2071 max = GraphBuffer[i];
2072 if (GraphBuffer[i] < min)
2073 min = GraphBuffer[i];
2074 }
7fe9b0b7 2075
e0165dcf 2076 if (max != min) {
2077 for (i = 0; i < GraphTraceLen; ++i) {
ba1a299c 2078 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
e0165dcf 2079 (max - min);
ba1a299c 2080 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
e0165dcf 2081 }
2082 }
2083 RepaintGraphWindow();
2084 return 0;
7fe9b0b7 2085}
2086
2087int CmdPlot(const char *Cmd)
2088{
e0165dcf 2089 ShowGraphWindow();
2090 return 0;
7fe9b0b7 2091}
2092
2093int CmdSave(const char *Cmd)
2094{
e0165dcf 2095 char filename[FILE_PATH_SIZE] = {0x00};
2096 int len = 0;
b915fda3 2097
e0165dcf 2098 len = strlen(Cmd);
2099 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2100 memcpy(filename, Cmd, len);
2101
b915fda3 2102
e0165dcf 2103 FILE *f = fopen(filename, "w");
2104 if(!f) {
2105 PrintAndLog("couldn't open '%s'", filename);
2106 return 0;
2107 }
2108 int i;
2109 for (i = 0; i < GraphTraceLen; i++) {
2110 fprintf(f, "%d\n", GraphBuffer[i]);
2111 }
2112 fclose(f);
2113 PrintAndLog("saved to '%s'", Cmd);
2114 return 0;
7fe9b0b7 2115}
2116
2117int CmdScale(const char *Cmd)
2118{
e0165dcf 2119 CursorScaleFactor = atoi(Cmd);
2120 if (CursorScaleFactor == 0) {
2121 PrintAndLog("bad, can't have zero scale");
2122 CursorScaleFactor = 1;
2123 }
2124 RepaintGraphWindow();
2125 return 0;
7fe9b0b7 2126}
2127
d51b2eda
MHS		 2128int CmdDirectionalThreshold(const char *Cmd)
2129{
e0165dcf 2130 int8_t upThres = param_get8(Cmd, 0);
2131 int8_t downThres = param_get8(Cmd, 1);
2132
2133 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2134
2135 int lastValue = GraphBuffer[0];
2136 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2137
2138 for (int i = 1; i < GraphTraceLen; ++i) {
2139 // Apply first threshold to samples heading up
2140 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2141 {
2142 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2143 GraphBuffer[i] = 1;
2144 }
2145 // Apply second threshold to samples heading down
2146 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2147 {
2148 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2149 GraphBuffer[i] = -1;
2150 }
2151 else
2152 {
2153 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2154 GraphBuffer[i] = GraphBuffer[i-1];
2155
2156 }
2157 }
2158 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2159 RepaintGraphWindow();
2160 return 0;
d51b2eda
MHS		 2161}
2162
7fe9b0b7 2163int CmdZerocrossings(const char *Cmd)
2164{
e0165dcf 2165 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2166 CmdHpf("");
2167
2168 int sign = 1;
2169 int zc = 0;
2170 int lastZc = 0;
2171
2172 for (int i = 0; i < GraphTraceLen; ++i) {
2173 if (GraphBuffer[i] * sign >= 0) {
2174 // No change in sign, reproduce the previous sample count.
2175 zc++;
2176 GraphBuffer[i] = lastZc;
2177 } else {
2178 // Change in sign, reset the sample count.
2179 sign = -sign;
2180 GraphBuffer[i] = lastZc;
2181 if (sign > 0) {
2182 lastZc = zc;
2183 zc = 0;
2184 }
2185 }
2186 }
2187
2188 RepaintGraphWindow();
2189 return 0;
7fe9b0b7 2190}
2191
ba1a299c 2192static command_t CommandTable[] =
7fe9b0b7 2193{
e0165dcf 2194 {"help", CmdHelp, 1, "This help"},
49bbc60a 2195 {"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)"},
e0165dcf 2196 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2197 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2198 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
fef74fdc 2199 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
e0165dcf 2200 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
e0165dcf 2201 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2202 {"dec", CmdDec, 1, "Decimate samples"},
2203 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
e0165dcf 2204 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2205 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2206 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2207 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2208 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2209 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2210 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2211 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2212 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2213 {"hide", CmdHide, 1, "Hide graph window"},
2214 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2215 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2216 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2217 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
fef74fdc 2218 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
e0165dcf 2219 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2220 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
979bba37 2221 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
e0165dcf 2222 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
411105e0 2223 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
e0165dcf 2224 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2225 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2226 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2227 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2228 {"setdebugmode", CmdSetDebugMode, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2229 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
e0165dcf 2230 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2231 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2232 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2233 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2234 {NULL, NULL, 0, NULL}
7fe9b0b7 2235};
2236
2237int CmdData(const char *Cmd)
2238{
e0165dcf 2239 CmdsParse(CommandTable, Cmd);
2240 return 0;
7fe9b0b7 2241}
2242
2243int CmdHelp(const char *Cmd)
2244{
e0165dcf 2245 CmdsHelp(CommandTable);
2246 return 0;
7fe9b0b7 2247}
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