Fix data mtrim (#262)
[proxmark3-svn] / client / cmddata.c
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> // also included in util.h
12 #include <string.h> // also included in util.h
13 #include <inttypes.h>
14 #include <limits.h> // for CmdNorm INT_MIN && INT_MAX
15 #include "data.h" // also included in util.h
16 #include "cmddata.h"
17 #include "util.h"
18 #include "cmdmain.h"
19 #include "proxmark3.h"
20 #include "ui.h" // for show graph controls
21 #include "graph.h" // for graph data
22 #include "cmdparser.h"// already included in cmdmain.h
23 #include "usb_cmd.h" // already included in cmdmain.h and proxmark3.h
24 #include "lfdemod.h" // for demod code
25 #include "loclass/cipherutils.h" // for decimating samples in getsamples
26 #include "cmdlfem4x.h"// for em410x demod
27
28 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
29 uint8_t g_debugMode=0;
30 size_t DemodBufferLen=0;
31 //size_t g_demodStartIdx=0;
32 //uint8_t g_demodClock=0;
33
34 static int CmdHelp(const char *Cmd);
35
36 //set the demod buffer with given array of binary (one bit per byte)
37 //by marshmellow
38 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
39 {
40 if (buff == NULL)
41 return;
42
43 if ( size >= MAX_DEMOD_BUF_LEN)
44 size = MAX_DEMOD_BUF_LEN;
45
46 size_t i = 0;
47 for (; i < size; i++){
48 DemodBuffer[i]=buff[startIdx++];
49 }
50 DemodBufferLen=size;
51 return;
52 }
53
54 int CmdSetDebugMode(const char *Cmd)
55 {
56 int demod=0;
57 sscanf(Cmd, "%i", &demod);
58 g_debugMode=(uint8_t)demod;
59 return 1;
60 }
61
62 int usage_data_printdemodbuf(){
63 PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
64 PrintAndLog("Options: ");
65 PrintAndLog(" h This help");
66 PrintAndLog(" x output in hex (omit for binary output)");
67 PrintAndLog(" o <offset> enter offset in # of bits");
68 PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
69 return 0;
70 }
71
72 //by marshmellow
73 void printDemodBuff(void)
74 {
75 int bitLen = DemodBufferLen;
76 if (bitLen<1) {
77 PrintAndLog("no bits found in demod buffer");
78 return;
79 }
80 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
81
82 char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
83 PrintAndLog("%s",bin);
84
85 return;
86 }
87
88 int CmdPrintDemodBuff(const char *Cmd)
89 {
90 char hex[512]={0x00};
91 bool hexMode = false;
92 bool errors = false;
93 uint32_t offset = 0; //could be size_t but no param_get16...
94 uint32_t length = 512;
95 char cmdp = 0;
96 while(param_getchar(Cmd, cmdp) != 0x00)
97 {
98 switch(param_getchar(Cmd, cmdp))
99 {
100 case 'h':
101 case 'H':
102 return usage_data_printdemodbuf();
103 case 'x':
104 case 'X':
105 hexMode = true;
106 cmdp++;
107 break;
108 case 'o':
109 case 'O':
110 offset = param_get32ex(Cmd, cmdp+1, 0, 10);
111 if (!offset) errors = true;
112 cmdp += 2;
113 break;
114 case 'l':
115 case 'L':
116 length = param_get32ex(Cmd, cmdp+1, 512, 10);
117 if (!length) errors = true;
118 cmdp += 2;
119 break;
120 default:
121 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
122 errors = true;
123 break;
124 }
125 if(errors) break;
126 }
127 //Validations
128 if(errors) return usage_data_printdemodbuf();
129 length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
130 int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
131
132 if (hexMode){
133 char *buf = (char *) (DemodBuffer + offset);
134 numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
135 numBits = binarraytohex(hex, buf, numBits);
136 if (numBits==0) return 0;
137 PrintAndLog("DemodBuffer: %s",hex);
138 } else {
139 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
140 }
141 return 1;
142 }
143
144 //by marshmellow
145 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
146 int CmdGetBitStream(const char *Cmd)
147 {
148 int i;
149 CmdHpf(Cmd);
150 for (i = 0; i < GraphTraceLen; i++) {
151 if (GraphBuffer[i] >= 1) {
152 GraphBuffer[i] = 1;
153 } else {
154 GraphBuffer[i] = 0;
155 }
156 }
157 RepaintGraphWindow();
158 return 0;
159 }
160
161 //by marshmellow
162 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
163 // (amp may not be needed anymore)
164 //verbose will print results and demoding messages
165 //emSearch will auto search for EM410x format in bitstream
166 //askType switches decode: ask/raw = 0, ask/manchester = 1
167 int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
168 int invert=0;
169 int clk=0;
170 int maxErr=100;
171 int maxLen=0;
172 uint8_t askamp = 0;
173 char amp = param_getchar(Cmd, 0);
174 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
175 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
176 if (!maxLen) maxLen = BIGBUF_SIZE;
177 if (invert != 0 && invert != 1) {
178 PrintAndLog("Invalid argument: %s", Cmd);
179 return 0;
180 }
181 if (clk==1){
182 invert=1;
183 clk=0;
184 }
185 size_t BitLen = getFromGraphBuf(BitStream);
186 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
187 if (BitLen < 255) return 0;
188 if (maxLen < BitLen && maxLen != 0) BitLen = maxLen;
189 int foundclk = 0;
190 //amp before ST check
191 if (amp == 'a' || amp == 'A') {
192 askAmp(BitStream, BitLen);
193 }
194 bool st = false;
195 size_t ststart = 0, stend = 0;
196 if (*stCheck) st = DetectST_ext(BitStream, &BitLen, &foundclk, &ststart, &stend);
197 if (st) {
198 *stCheck = st;
199 clk = (clk == 0) ? foundclk : clk;
200 CursorCPos = ststart;
201 CursorDPos = stend;
202 if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator - First one is shown by orange and blue graph markers");
203 }
204 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askamp, askType);
205 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
206 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
207 return 0;
208 }
209 if (errCnt > maxErr){
210 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
211 return 0;
212 }
213 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
214
215 //output
216 setDemodBuf(BitStream,BitLen,0);
217 if (verbose || g_debugMode){
218 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
219 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
220 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
221 // Now output the bitstream to the scrollback by line of 16 bits
222 printDemodBuff();
223
224 }
225 uint64_t lo = 0;
226 uint32_t hi = 0;
227 if (emSearch){
228 AskEm410xDecode(true, &hi, &lo);
229 }
230 return 1;
231 }
232 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
233 bool st = false;
234 return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
235 }
236
237 //by marshmellow
238 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
239 //attempts to demodulate ask while decoding manchester
240 //prints binary found and saves in graphbuffer for further commands
241 int Cmdaskmandemod(const char *Cmd)
242 {
243 char cmdp = param_getchar(Cmd, 0);
244 if (strlen(Cmd) > 45 || cmdp == 'h' || cmdp == 'H') {
245 PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
246 PrintAndLog(" ['s'] optional, check for Sequence Terminator");
247 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
248 PrintAndLog(" <invert>, 1 to invert output");
249 PrintAndLog(" [set maximum allowed errors], default = 100");
250 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
251 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
252 PrintAndLog("");
253 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
254 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
255 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
256 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
257 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");
258 return 0;
259 }
260 bool st = true;
261 if (Cmd[0]=='s')
262 return ASKDemod_ext(Cmd++, true, true, 1, &st);
263 else if (Cmd[1] == 's')
264 return ASKDemod_ext(Cmd+=2, true, true, 1, &st);
265 else
266 return ASKDemod(Cmd, true, true, 1);
267 }
268
269 //by marshmellow
270 //manchester decode
271 //stricktly take 10 and 01 and convert to 0 and 1
272 int Cmdmandecoderaw(const char *Cmd)
273 {
274 int i =0;
275 int errCnt=0;
276 size_t size=0;
277 int invert=0;
278 int maxErr = 20;
279 char cmdp = param_getchar(Cmd, 0);
280 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
281 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
282 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
283 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
284 PrintAndLog(" [invert] invert output");
285 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
286 PrintAndLog("");
287 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
288 return 0;
289 }
290 if (DemodBufferLen==0) return 0;
291 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
292 int high=0,low=0;
293 for (;i<DemodBufferLen;++i){
294 if (DemodBuffer[i]>high) high=DemodBuffer[i];
295 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
296 BitStream[i]=DemodBuffer[i];
297 }
298 if (high>7 || low <0 ){
299 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
300 return 0;
301 }
302
303 sscanf(Cmd, "%i %i", &invert, &maxErr);
304 size=i;
305 uint8_t alignPos = 0;
306 errCnt=manrawdecode(BitStream, &size, invert, &alignPos);
307 if (errCnt>=maxErr){
308 PrintAndLog("Too many errors: %d",errCnt);
309 return 0;
310 }
311 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
312 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
313 if (errCnt==0){
314 uint64_t id = 0;
315 uint32_t hi = 0;
316 size_t idx=0;
317 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
318 //need to adjust to set bitstream back to manchester encoded data
319 //setDemodBuf(BitStream, size, idx);
320
321 printEM410x(hi, id);
322 }
323 }
324 return 1;
325 }
326
327 //by marshmellow
328 //biphase decode
329 //take 01 or 10 = 0 and 11 or 00 = 1
330 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
331 // and "invert" default = 0 if 1 it will invert output
332 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
333 int CmdBiphaseDecodeRaw(const char *Cmd)
334 {
335 size_t size=0;
336 int offset=0, invert=0, maxErr=20, errCnt=0;
337 char cmdp = param_getchar(Cmd, 0);
338 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
339 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
340 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
341 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
342 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
343 PrintAndLog("");
344 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
345 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
346 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
347 PrintAndLog("");
348 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
349 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
350 return 0;
351 }
352 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
353 if (DemodBufferLen==0){
354 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
355 return 0;
356 }
357 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
358 memcpy(BitStream, DemodBuffer, DemodBufferLen);
359 size = DemodBufferLen;
360 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
361 if (errCnt<0){
362 PrintAndLog("Error during decode:%d", errCnt);
363 return 0;
364 }
365 if (errCnt>maxErr){
366 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
367 return 0;
368 }
369
370 if (errCnt>0){
371 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
372 }
373 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
374 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
375
376 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
377 return 1;
378 }
379
380 //by marshmellow
381 // - ASK Demod then Biphase decode GraphBuffer samples
382 int ASKbiphaseDemod(const char *Cmd, bool verbose)
383 {
384 //ask raw demod GraphBuffer first
385 int offset=0, clk=0, invert=0, maxErr=0;
386 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
387
388 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
389 size_t size = getFromGraphBuf(BitStream);
390 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
391 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
392 if ( errCnt < 0 || errCnt > maxErr ) {
393 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
394 return 0;
395 }
396
397 //attempt to Biphase decode BitStream
398 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
399 if (errCnt < 0){
400 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
401 return 0;
402 }
403 if (errCnt > maxErr) {
404 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
405 return 0;
406 }
407 //success set DemodBuffer and return
408 setDemodBuf(BitStream, size, 0);
409 if (g_debugMode || verbose){
410 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
411 printDemodBuff();
412 }
413 return 1;
414 }
415 //by marshmellow - see ASKbiphaseDemod
416 int Cmdaskbiphdemod(const char *Cmd)
417 {
418 char cmdp = param_getchar(Cmd, 0);
419 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
420 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
421 PrintAndLog(" [offset], offset to begin biphase, default=0");
422 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
423 PrintAndLog(" <invert>, 1 to invert output");
424 PrintAndLog(" [set maximum allowed errors], default = 100");
425 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
426 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
427 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
428 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
429 PrintAndLog(" NOTE: any other arg must have previous args set to work");
430 PrintAndLog("");
431 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
432 PrintAndLog("");
433 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
434 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
435 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
436 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
437 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
438 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");
439 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");
440 return 0;
441 }
442 return ASKbiphaseDemod(Cmd, true);
443 }
444
445 //by marshmellow - see ASKDemod
446 int Cmdaskrawdemod(const char *Cmd)
447 {
448 char cmdp = param_getchar(Cmd, 0);
449 if (strlen(Cmd) > 35 || cmdp == 'h' || cmdp == 'H') {
450 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
451 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
452 PrintAndLog(" <invert>, 1 to invert output");
453 PrintAndLog(" [set maximum allowed errors], default = 100");
454 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
455 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
456 PrintAndLog("");
457 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
458 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
459 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
460 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
461 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
462 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");
463 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");
464 return 0;
465 }
466 return ASKDemod(Cmd, true, false, 0);
467 }
468
469 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
470 {
471 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
472 size_t Correlation = 0;
473 int maxSum = 0;
474 int lastMax = 0;
475 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
476 for (int i = 0; i < GraphTraceLen - window; ++i) {
477 int sum = 0;
478 for (int j = 0; j < window; ++j) {
479 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
480 }
481 CorrelBuffer[i] = sum;
482 if (sum >= maxSum-100 && sum <= maxSum+100){
483 //another max
484 Correlation = i-lastMax;
485 lastMax = i;
486 if (sum > maxSum) maxSum = sum;
487 } else if (sum > maxSum){
488 maxSum=sum;
489 lastMax = i;
490 }
491 }
492 if (Correlation==0){
493 //try again with wider margin
494 for (int i = 0; i < GraphTraceLen - window; i++){
495 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
496 //another max
497 Correlation = i-lastMax;
498 lastMax = i;
499 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
500 }
501 }
502 }
503 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
504
505 if (SaveGrph){
506 GraphTraceLen = GraphTraceLen - window;
507 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
508 RepaintGraphWindow();
509 }
510 return Correlation;
511 }
512
513 int usage_data_autocorr(void)
514 {
515 //print help
516 PrintAndLog("Usage: data autocorr [window] [g]");
517 PrintAndLog("Options: ");
518 PrintAndLog(" h This help");
519 PrintAndLog(" [window] window length for correlation - default = 4000");
520 PrintAndLog(" g save back to GraphBuffer (overwrite)");
521 return 0;
522 }
523
524 int CmdAutoCorr(const char *Cmd)
525 {
526 char cmdp = param_getchar(Cmd, 0);
527 if (cmdp == 'h' || cmdp == 'H')
528 return usage_data_autocorr();
529 int window = 4000; //set default
530 char grph=0;
531 bool updateGrph = false;
532 sscanf(Cmd, "%i %c", &window, &grph);
533
534 if (window >= GraphTraceLen) {
535 PrintAndLog("window must be smaller than trace (%d samples)",
536 GraphTraceLen);
537 return 0;
538 }
539 if (grph == 'g') updateGrph=true;
540 return AutoCorrelate(window, updateGrph, true);
541 }
542
543 int CmdBitsamples(const char *Cmd)
544 {
545 int cnt = 0;
546 uint8_t got[12288];
547
548 GetFromBigBuf(got,sizeof(got),0);
549 WaitForResponse(CMD_ACK,NULL);
550
551 for (int j = 0; j < sizeof(got); j++) {
552 for (int k = 0; k < 8; k++) {
553 if(got[j] & (1 << (7 - k))) {
554 GraphBuffer[cnt++] = 1;
555 } else {
556 GraphBuffer[cnt++] = 0;
557 }
558 }
559 }
560 GraphTraceLen = cnt;
561 RepaintGraphWindow();
562 return 0;
563 }
564
565 int CmdBuffClear(const char *Cmd)
566 {
567 UsbCommand c = {CMD_BUFF_CLEAR};
568 SendCommand(&c);
569 ClearGraph(true);
570 return 0;
571 }
572
573 int CmdDec(const char *Cmd)
574 {
575 for (int i = 0; i < (GraphTraceLen / 2); ++i)
576 GraphBuffer[i] = GraphBuffer[i * 2];
577 GraphTraceLen /= 2;
578 PrintAndLog("decimated by 2");
579 RepaintGraphWindow();
580 return 0;
581 }
582 /**
583 * Undecimate - I'd call it 'interpolate', but we'll save that
584 * name until someone does an actual interpolation command, not just
585 * blindly repeating samples
586 * @param Cmd
587 * @return
588 */
589 int CmdUndec(const char *Cmd)
590 {
591 if(param_getchar(Cmd, 0) == 'h')
592 {
593 PrintAndLog("Usage: data undec [factor]");
594 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
595 PrintAndLog("Options: ");
596 PrintAndLog(" h This help");
597 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
598 PrintAndLog("Example: 'data undec 3'");
599 return 0;
600 }
601
602 uint8_t factor = param_get8ex(Cmd, 0,2, 10);
603 //We have memory, don't we?
604 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
605 uint32_t g_index = 0, s_index = 0;
606 while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
607 {
608 int count = 0;
609 for(count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
610 swap[s_index+count] = GraphBuffer[g_index];
611
612 s_index += count;
613 g_index++;
614 }
615
616 memcpy(GraphBuffer, swap, s_index * sizeof(int));
617 GraphTraceLen = s_index;
618 RepaintGraphWindow();
619 return 0;
620 }
621
622 //by marshmellow
623 //shift graph zero up or down based on input + or -
624 int CmdGraphShiftZero(const char *Cmd)
625 {
626
627 int shift=0;
628 //set options from parameters entered with the command
629 sscanf(Cmd, "%i", &shift);
630 int shiftedVal=0;
631 for(int i = 0; i<GraphTraceLen; i++){
632 shiftedVal=GraphBuffer[i]+shift;
633 if (shiftedVal>127)
634 shiftedVal=127;
635 else if (shiftedVal<-127)
636 shiftedVal=-127;
637 GraphBuffer[i]= shiftedVal;
638 }
639 CmdNorm("");
640 return 0;
641 }
642
643 //by marshmellow
644 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
645 //similar to dirtheshold, threshold commands
646 //takes a threshold length which is the measured length between two samples then determines an edge
647 int CmdAskEdgeDetect(const char *Cmd)
648 {
649 int thresLen = 25;
650 int Last = 0;
651 sscanf(Cmd, "%i", &thresLen);
652
653 for(int i = 1; i<GraphTraceLen; i++){
654 if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
655 Last = 127;
656 else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
657 Last = -127;
658 GraphBuffer[i-1] = Last;
659 }
660 RepaintGraphWindow();
661 return 0;
662 }
663
664 /* Print our clock rate */
665 // uses data from graphbuffer
666 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
667 int CmdDetectClockRate(const char *Cmd)
668 {
669 char cmdp = param_getchar(Cmd, 0);
670 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
671 PrintAndLog("Usage: data detectclock [modulation] <clock>");
672 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
673 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
674 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
675 PrintAndLog("");
676 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
677 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
678 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
679 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
680 }
681 int ans=0;
682 if (cmdp == 'a'){
683 ans = GetAskClock(Cmd+1, true, false);
684 } else if (cmdp == 'f'){
685 ans = GetFskClock("", true, false);
686 } else if (cmdp == 'n'){
687 ans = GetNrzClock("", true, false);
688 } else if (cmdp == 'p'){
689 ans = GetPskClock("", true, false);
690 } else {
691 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
692 }
693 return ans;
694 }
695
696 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
697 {
698 static char fType[8];
699 memset(fType, 0x00, 8);
700 char *fskType = fType;
701 if (fchigh==10 && fclow==8){
702 if (invert) //fsk2a
703 memcpy(fskType, "FSK2a", 5);
704 else //fsk2
705 memcpy(fskType, "FSK2", 4);
706 } else if (fchigh == 8 && fclow == 5) {
707 if (invert)
708 memcpy(fskType, "FSK1", 4);
709 else
710 memcpy(fskType, "FSK1a", 5);
711 } else {
712 memcpy(fskType, "FSK??", 5);
713 }
714 return fskType;
715 }
716
717 //by marshmellow
718 //fsk raw demod and print binary
719 //takes 4 arguments - Clock, invert, fchigh, fclow
720 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
721 int FSKrawDemod(const char *Cmd, bool verbose)
722 {
723 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
724 uint8_t rfLen, invert, fchigh, fclow;
725 //set defaults
726 //set options from parameters entered with the command
727 rfLen = param_get8(Cmd, 0);
728 invert = param_get8(Cmd, 1);
729 fchigh = param_get8(Cmd, 2);
730 fclow = param_get8(Cmd, 3);
731
732 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
733 if (rfLen==1) {
734 invert = 1; //if invert option only is used
735 rfLen = 0;
736 }
737 }
738 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
739 size_t BitLen = getFromGraphBuf(BitStream);
740 if (BitLen==0) return 0;
741 //get field clock lengths
742 uint16_t fcs=0;
743 if (!fchigh || !fclow) {
744 fcs = countFC(BitStream, BitLen, 1);
745 if (!fcs) {
746 fchigh = 10;
747 fclow = 8;
748 } else {
749 fchigh = (fcs >> 8) & 0x00FF;
750 fclow = fcs & 0x00FF;
751 }
752 }
753 //get bit clock length
754 if (!rfLen) {
755 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
756 if (!rfLen) rfLen = 50;
757 }
758 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
759 if (size > 0) {
760 setDemodBuf(BitStream,size,0);
761
762 // Now output the bitstream to the scrollback by line of 16 bits
763 if (verbose || g_debugMode) {
764 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
765 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
766 printDemodBuff();
767 }
768
769 return 1;
770 } else {
771 if (g_debugMode) PrintAndLog("no FSK data found");
772 }
773 return 0;
774 }
775
776 //by marshmellow
777 //fsk raw demod and print binary
778 //takes 4 arguments - Clock, invert, fchigh, fclow
779 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
780 int CmdFSKrawdemod(const char *Cmd)
781 {
782 char cmdp = param_getchar(Cmd, 0);
783 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H') {
784 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
785 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
786 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
787 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
788 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
789 PrintAndLog("");
790 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
791 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
792 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
793 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
794 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
795 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
796 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
797 return 0;
798 }
799 return FSKrawDemod(Cmd, true);
800 }
801
802 //by marshmellow
803 //attempt to psk1 demod graph buffer
804 int PSKDemod(const char *Cmd, bool verbose)
805 {
806 int invert=0;
807 int clk=0;
808 int maxErr=100;
809 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
810 if (clk==1){
811 invert=1;
812 clk=0;
813 }
814 if (invert != 0 && invert != 1) {
815 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
816 return 0;
817 }
818 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
819 size_t BitLen = getFromGraphBuf(BitStream);
820 if (BitLen==0) return 0;
821 uint8_t carrier=countFC(BitStream, BitLen, 0);
822 if (carrier!=2 && carrier!=4 && carrier!=8){
823 //invalid carrier
824 return 0;
825 }
826 if (g_debugMode){
827 PrintAndLog("Carrier: rf/%d",carrier);
828 }
829 int errCnt=0;
830 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
831 if (errCnt > maxErr){
832 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
833 return 0;
834 }
835 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
836 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
837 return 0;
838 }
839 if (verbose || g_debugMode){
840 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
841 if (errCnt>0){
842 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
843 }
844 }
845 //prime demod buffer for output
846 setDemodBuf(BitStream,BitLen,0);
847 return 1;
848 }
849
850 // by marshmellow
851 // takes 3 arguments - clock, invert, maxErr as integers
852 // attempts to demodulate nrz only
853 // prints binary found and saves in demodbuffer for further commands
854 int NRZrawDemod(const char *Cmd, bool verbose)
855 {
856 int invert=0;
857 int clk=0;
858 int maxErr=100;
859 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
860 if (clk==1){
861 invert=1;
862 clk=0;
863 }
864 if (invert != 0 && invert != 1) {
865 PrintAndLog("Invalid argument: %s", Cmd);
866 return 0;
867 }
868 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
869 size_t BitLen = getFromGraphBuf(BitStream);
870 if (BitLen==0) return 0;
871 int errCnt=0;
872 int clkStartIdx = 0;
873 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, &clkStartIdx);
874 if (errCnt > maxErr){
875 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
876 return 0;
877 }
878 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
879 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
880 return 0;
881 }
882 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
883 //prime demod buffer for output
884 setDemodBuf(BitStream,BitLen,0);
885
886 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
887 if (verbose || g_debugMode) {
888 PrintAndLog("NRZ demoded bitstream:");
889 // Now output the bitstream to the scrollback by line of 16 bits
890 printDemodBuff();
891 }
892 return 1;
893 }
894
895 int CmdNRZrawDemod(const char *Cmd)
896 {
897 char cmdp = param_getchar(Cmd, 0);
898 if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') {
899 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
900 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
901 PrintAndLog(" <invert>, 1 for invert output");
902 PrintAndLog(" [set maximum allowed errors], default = 100.");
903 PrintAndLog("");
904 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
905 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
906 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
907 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
908 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");
909 return 0;
910 }
911 return NRZrawDemod(Cmd, true);
912 }
913
914 // by marshmellow
915 // takes 3 arguments - clock, invert, maxErr as integers
916 // attempts to demodulate psk only
917 // prints binary found and saves in demodbuffer for further commands
918 int CmdPSK1rawDemod(const char *Cmd)
919 {
920 int ans;
921 char cmdp = param_getchar(Cmd, 0);
922 if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') {
923 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
924 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
925 PrintAndLog(" <invert>, 1 for invert output");
926 PrintAndLog(" [set maximum allowed errors], default = 100.");
927 PrintAndLog("");
928 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
929 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
930 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
931 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
932 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");
933 return 0;
934 }
935 ans = PSKDemod(Cmd, true);
936 //output
937 if (!ans){
938 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
939 return 0;
940 }
941
942 PrintAndLog("PSK1 demoded bitstream:");
943 // Now output the bitstream to the scrollback by line of 16 bits
944 printDemodBuff();
945 return 1;
946 }
947
948 // by marshmellow
949 // takes same args as cmdpsk1rawdemod
950 int CmdPSK2rawDemod(const char *Cmd)
951 {
952 int ans=0;
953 char cmdp = param_getchar(Cmd, 0);
954 if (strlen(Cmd) > 16 || cmdp == 'h' || cmdp == 'H') {
955 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
956 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
957 PrintAndLog(" <invert>, 1 for invert output");
958 PrintAndLog(" [set maximum allowed errors], default = 100.");
959 PrintAndLog("");
960 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
961 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
962 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
963 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
964 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");
965 return 0;
966 }
967 ans=PSKDemod(Cmd, true);
968 if (!ans){
969 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
970 return 0;
971 }
972 psk1TOpsk2(DemodBuffer, DemodBufferLen);
973 PrintAndLog("PSK2 demoded bitstream:");
974 // Now output the bitstream to the scrollback by line of 16 bits
975 printDemodBuff();
976 return 1;
977 }
978
979 // by marshmellow - combines all raw demod functions into one menu command
980 int CmdRawDemod(const char *Cmd)
981 {
982 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
983
984 if (strlen(Cmd) > 35 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
985 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
986 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
987 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
988 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
989 PrintAndLog(" <options> see specific modulation help for optional parameters");
990 PrintAndLog("");
991 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
992 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
993 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
994 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
995 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
996 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
997 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
998 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
999 return 0;
1000 }
1001 char cmdp2 = Cmd[1];
1002 int ans = 0;
1003 if (cmdp == 'f' && cmdp2 == 's'){
1004 ans = CmdFSKrawdemod(Cmd+2);
1005 } else if(cmdp == 'a' && cmdp2 == 'b'){
1006 ans = Cmdaskbiphdemod(Cmd+2);
1007 } else if(cmdp == 'a' && cmdp2 == 'm'){
1008 ans = Cmdaskmandemod(Cmd+2);
1009 } else if(cmdp == 'a' && cmdp2 == 'r'){
1010 ans = Cmdaskrawdemod(Cmd+2);
1011 } else if(cmdp == 'n' && cmdp2 == 'r'){
1012 ans = CmdNRZrawDemod(Cmd+2);
1013 } else if(cmdp == 'p' && cmdp2 == '1'){
1014 ans = CmdPSK1rawDemod(Cmd+2);
1015 } else if(cmdp == 'p' && cmdp2 == '2'){
1016 ans = CmdPSK2rawDemod(Cmd+2);
1017 } else {
1018 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1019 }
1020 return ans;
1021 }
1022
1023 int CmdGrid(const char *Cmd)
1024 {
1025 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
1026 PlotGridXdefault= PlotGridX;
1027 PlotGridYdefault= PlotGridY;
1028 RepaintGraphWindow();
1029 return 0;
1030 }
1031
1032 int CmdSetGraphMarkers(const char *Cmd) {
1033 sscanf(Cmd, "%i %i", &CursorCPos, &CursorDPos);
1034 RepaintGraphWindow();
1035 return 0;
1036 }
1037
1038 int CmdHexsamples(const char *Cmd)
1039 {
1040 int i, j;
1041 int requested = 0;
1042 int offset = 0;
1043 char string_buf[25];
1044 char* string_ptr = string_buf;
1045 uint8_t got[BIGBUF_SIZE];
1046
1047 sscanf(Cmd, "%i %i", &requested, &offset);
1048
1049 /* if no args send something */
1050 if (requested == 0) {
1051 requested = 8;
1052 }
1053 if (offset + requested > sizeof(got)) {
1054 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1055 return 0;
1056 }
1057
1058 GetFromBigBuf(got,requested,offset);
1059 WaitForResponse(CMD_ACK,NULL);
1060
1061 i = 0;
1062 for (j = 0; j < requested; j++) {
1063 i++;
1064 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
1065 if (i == 8) {
1066 *(string_ptr - 1) = '\0'; // remove the trailing space
1067 PrintAndLog("%s", string_buf);
1068 string_buf[0] = '\0';
1069 string_ptr = string_buf;
1070 i = 0;
1071 }
1072 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
1073 *(string_ptr - 1) = '\0';
1074 PrintAndLog("%s", string_buf);
1075 string_buf[0] = '\0';
1076 }
1077 }
1078 return 0;
1079 }
1080
1081 int CmdHide(const char *Cmd)
1082 {
1083 HideGraphWindow();
1084 return 0;
1085 }
1086
1087 //zero mean GraphBuffer
1088 int CmdHpf(const char *Cmd)
1089 {
1090 int i;
1091 int accum = 0;
1092
1093 for (i = 10; i < GraphTraceLen; ++i)
1094 accum += GraphBuffer[i];
1095 accum /= (GraphTraceLen - 10);
1096 for (i = 0; i < GraphTraceLen; ++i)
1097 GraphBuffer[i] -= accum;
1098
1099 RepaintGraphWindow();
1100 return 0;
1101 }
1102
1103 uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b)
1104 {
1105 int i;
1106 uint8_t val = 0;
1107 for(i =0 ; i < bits_per_sample; i++)
1108 {
1109 val |= (headBit(b) << (7-i));
1110 }
1111 return val;
1112 }
1113
1114 int getSamples(const char *Cmd, bool silent)
1115 {
1116 //If we get all but the last byte in bigbuf,
1117 // we don't have to worry about remaining trash
1118 // in the last byte in case the bits-per-sample
1119 // does not line up on byte boundaries
1120
1121 uint8_t got[BIGBUF_SIZE-1] = { 0 };
1122
1123 int n = strtol(Cmd, NULL, 0);
1124
1125 if (n == 0 || n > sizeof(got))
1126 n = sizeof(got);
1127
1128 PrintAndLog("Reading %d bytes from device memory\n", n);
1129 GetFromBigBuf(got,n,0);
1130 PrintAndLog("Data fetched");
1131 UsbCommand response;
1132 WaitForResponse(CMD_ACK, &response);
1133 uint8_t bits_per_sample = 8;
1134
1135 //Old devices without this feature would send 0 at arg[0]
1136 if(response.arg[0] > 0)
1137 {
1138 sample_config *sc = (sample_config *) response.d.asBytes;
1139 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
1140 , sc->decimation);
1141 bits_per_sample = sc->bits_per_sample;
1142 }
1143 if(bits_per_sample < 8)
1144 {
1145 PrintAndLog("Unpacking...");
1146 BitstreamIn bout = { got, bits_per_sample * n, 0};
1147 int j =0;
1148 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
1149 uint8_t sample = getByte(bits_per_sample, &bout);
1150 GraphBuffer[j] = ((int) sample )- 128;
1151 }
1152 GraphTraceLen = j;
1153 PrintAndLog("Unpacked %d samples" , j );
1154 }else
1155 {
1156 for (int j = 0; j < n; j++) {
1157 GraphBuffer[j] = ((int)got[j]) - 128;
1158 }
1159 GraphTraceLen = n;
1160 }
1161
1162 RepaintGraphWindow();
1163 return 0;
1164 }
1165
1166 int CmdSamples(const char *Cmd)
1167 {
1168 return getSamples(Cmd, false);
1169 }
1170
1171 int CmdTuneSamples(const char *Cmd)
1172 {
1173 int timeout = 0, arg = FLAG_TUNE_ALL;
1174
1175 if(*Cmd == 'l') {
1176 arg = FLAG_TUNE_LF;
1177 } else if (*Cmd == 'h') {
1178 arg = FLAG_TUNE_HF;
1179 } else if (*Cmd != '\0') {
1180 PrintAndLog("use 'tune' or 'tune l' or 'tune h'");
1181 return 0;
1182 }
1183
1184 printf("\nMeasuring antenna characteristics, please wait...");
1185
1186 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {arg, 0, 0}};
1187 SendCommand(&c);
1188
1189 UsbCommand resp;
1190 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
1191 timeout++;
1192 printf(".");
1193 if (timeout > 7) {
1194 PrintAndLog("\nNo response from Proxmark. Aborting...");
1195 return 1;
1196 }
1197 }
1198
1199 int peakv, peakf;
1200 int vLf125, vLf134, vHf;
1201 vLf125 = resp.arg[0] & 0xffff;
1202 vLf134 = resp.arg[0] >> 16;
1203 vHf = resp.arg[1] & 0xffff;;
1204 peakf = resp.arg[2] & 0xffff;
1205 peakv = resp.arg[2] >> 16;
1206 PrintAndLog("");
1207 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
1208 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
1209 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
1210 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
1211
1212 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
1213 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
1214 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1215 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
1216
1217 if (peakv < LF_UNUSABLE_V)
1218 PrintAndLog("# Your LF antenna is unusable.");
1219 else if (peakv < LF_MARGINAL_V)
1220 PrintAndLog("# Your LF antenna is marginal.");
1221 if (vHf < HF_UNUSABLE_V)
1222 PrintAndLog("# Your HF antenna is unusable.");
1223 else if (vHf < HF_MARGINAL_V)
1224 PrintAndLog("# Your HF antenna is marginal.");
1225
1226 if (peakv >= LF_UNUSABLE_V) {
1227 for (int i = 0; i < 256; i++) {
1228 GraphBuffer[i] = resp.d.asBytes[i] - 128;
1229 }
1230 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
1231 PrintAndLog("\n");
1232 GraphTraceLen = 256;
1233 ShowGraphWindow();
1234 RepaintGraphWindow();
1235 }
1236
1237 return 0;
1238 }
1239
1240
1241 int CmdLoad(const char *Cmd)
1242 {
1243 char filename[FILE_PATH_SIZE] = {0x00};
1244 int len = 0;
1245
1246 len = strlen(Cmd);
1247 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
1248 memcpy(filename, Cmd, len);
1249
1250 FILE *f = fopen(filename, "r");
1251 if (!f) {
1252 PrintAndLog("couldn't open '%s'", filename);
1253 return 0;
1254 }
1255
1256 GraphTraceLen = 0;
1257 char line[80];
1258 while (fgets(line, sizeof (line), f)) {
1259 GraphBuffer[GraphTraceLen] = atoi(line);
1260 GraphTraceLen++;
1261 }
1262 fclose(f);
1263 PrintAndLog("loaded %d samples", GraphTraceLen);
1264 RepaintGraphWindow();
1265 return 0;
1266 }
1267
1268 int CmdLtrim(const char *Cmd)
1269 {
1270 int ds = atoi(Cmd);
1271 if (GraphTraceLen<=0) return 0;
1272 for (int i = ds; i < GraphTraceLen; ++i)
1273 GraphBuffer[i-ds] = GraphBuffer[i];
1274 GraphTraceLen -= ds;
1275
1276 RepaintGraphWindow();
1277 return 0;
1278 }
1279
1280 // trim graph to input argument length
1281 int CmdRtrim(const char *Cmd)
1282 {
1283 int ds = atoi(Cmd);
1284
1285 GraphTraceLen = ds;
1286
1287 RepaintGraphWindow();
1288 return 0;
1289 }
1290
1291 // trim graph (middle) piece
1292 int CmdMtrim(const char *Cmd) {
1293 int start = 0, stop = 0;
1294 sscanf(Cmd, "%i %i", &start, &stop);
1295
1296 if (start > GraphTraceLen || stop > GraphTraceLen || start > stop) return 0;
1297 start++; //leave start position sample
1298
1299 GraphTraceLen = stop - start;
1300 for (int i = 0; i < GraphTraceLen; i++) {
1301 GraphBuffer[i] = GraphBuffer[start+i];
1302 }
1303 return 0;
1304 }
1305
1306
1307 int CmdNorm(const char *Cmd)
1308 {
1309 int i;
1310 int max = INT_MIN, min = INT_MAX;
1311
1312 for (i = 10; i < GraphTraceLen; ++i) {
1313 if (GraphBuffer[i] > max)
1314 max = GraphBuffer[i];
1315 if (GraphBuffer[i] < min)
1316 min = GraphBuffer[i];
1317 }
1318
1319 if (max != min) {
1320 for (i = 0; i < GraphTraceLen; ++i) {
1321 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
1322 (max - min);
1323 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
1324 }
1325 }
1326 RepaintGraphWindow();
1327 return 0;
1328 }
1329
1330 int CmdPlot(const char *Cmd)
1331 {
1332 ShowGraphWindow();
1333 return 0;
1334 }
1335
1336 int CmdSave(const char *Cmd)
1337 {
1338 char filename[FILE_PATH_SIZE] = {0x00};
1339 int len = 0;
1340
1341 len = strlen(Cmd);
1342 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
1343 memcpy(filename, Cmd, len);
1344
1345
1346 FILE *f = fopen(filename, "w");
1347 if(!f) {
1348 PrintAndLog("couldn't open '%s'", filename);
1349 return 0;
1350 }
1351 int i;
1352 for (i = 0; i < GraphTraceLen; i++) {
1353 fprintf(f, "%d\n", GraphBuffer[i]);
1354 }
1355 fclose(f);
1356 PrintAndLog("saved to '%s'", Cmd);
1357 return 0;
1358 }
1359
1360 int CmdScale(const char *Cmd)
1361 {
1362 CursorScaleFactor = atoi(Cmd);
1363 if (CursorScaleFactor == 0) {
1364 PrintAndLog("bad, can't have zero scale");
1365 CursorScaleFactor = 1;
1366 }
1367 RepaintGraphWindow();
1368 return 0;
1369 }
1370
1371 int CmdDirectionalThreshold(const char *Cmd)
1372 {
1373 int8_t upThres = param_get8(Cmd, 0);
1374 int8_t downThres = param_get8(Cmd, 1);
1375
1376 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
1377
1378 int lastValue = GraphBuffer[0];
1379 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
1380
1381 for (int i = 1; i < GraphTraceLen; ++i) {
1382 // Apply first threshold to samples heading up
1383 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
1384 {
1385 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
1386 GraphBuffer[i] = 127;
1387 }
1388 // Apply second threshold to samples heading down
1389 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
1390 {
1391 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
1392 GraphBuffer[i] = -127;
1393 }
1394 else
1395 {
1396 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
1397 GraphBuffer[i] = GraphBuffer[i-1];
1398
1399 }
1400 }
1401 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
1402 RepaintGraphWindow();
1403 return 0;
1404 }
1405
1406 int CmdZerocrossings(const char *Cmd)
1407 {
1408 // Zero-crossings aren't meaningful unless the signal is zero-mean.
1409 CmdHpf("");
1410
1411 int sign = 1;
1412 int zc = 0;
1413 int lastZc = 0;
1414
1415 for (int i = 0; i < GraphTraceLen; ++i) {
1416 if (GraphBuffer[i] * sign >= 0) {
1417 // No change in sign, reproduce the previous sample count.
1418 zc++;
1419 GraphBuffer[i] = lastZc;
1420 } else {
1421 // Change in sign, reset the sample count.
1422 sign = -sign;
1423 GraphBuffer[i] = lastZc;
1424 if (sign > 0) {
1425 lastZc = zc;
1426 zc = 0;
1427 }
1428 }
1429 }
1430
1431 RepaintGraphWindow();
1432 return 0;
1433 }
1434
1435 int usage_data_bin2hex(){
1436 PrintAndLog("Usage: data bin2hex <binary_digits>");
1437 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
1438 return 0;
1439 }
1440
1441 /**
1442 * @brief Utility for conversion via cmdline.
1443 * @param Cmd
1444 * @return
1445 */
1446 int Cmdbin2hex(const char *Cmd)
1447 {
1448 int bg =0, en =0;
1449 if(param_getptr(Cmd, &bg, &en, 0))
1450 {
1451 return usage_data_bin2hex();
1452 }
1453 //Number of digits supplied as argument
1454 size_t length = en - bg +1;
1455 size_t bytelen = (length+7) / 8;
1456 uint8_t* arr = (uint8_t *) malloc(bytelen);
1457 memset(arr, 0, bytelen);
1458 BitstreamOut bout = { arr, 0, 0 };
1459
1460 for(; bg <= en ;bg++)
1461 {
1462 char c = Cmd[bg];
1463 if( c == '1') pushBit(&bout, 1);
1464 else if( c == '0') pushBit(&bout, 0);
1465 else PrintAndLog("Ignoring '%c'", c);
1466 }
1467
1468 if(bout.numbits % 8 != 0)
1469 {
1470 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
1471 }
1472
1473 //Uses printf instead of PrintAndLog since the latter
1474 // adds linebreaks to each printout - this way was more convenient since we don't have to
1475 // allocate a string and write to that first...
1476 for(size_t x = 0; x < bytelen ; x++)
1477 {
1478 printf("%02X", arr[x]);
1479 }
1480 printf("\n");
1481 free(arr);
1482 return 0;
1483 }
1484
1485 int usage_data_hex2bin() {
1486 PrintAndLog("Usage: data hex2bin <hex_digits>");
1487 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
1488 return 0;
1489
1490 }
1491
1492 int Cmdhex2bin(const char *Cmd)
1493 {
1494 int bg =0, en =0;
1495 if(param_getptr(Cmd, &bg, &en, 0))
1496 {
1497 return usage_data_hex2bin();
1498 }
1499
1500
1501 while(bg <= en )
1502 {
1503 char x = Cmd[bg++];
1504 // capitalize
1505 if (x >= 'a' && x <= 'f')
1506 x -= 32;
1507 // convert to numeric value
1508 if (x >= '0' && x <= '9')
1509 x -= '0';
1510 else if (x >= 'A' && x <= 'F')
1511 x -= 'A' - 10;
1512 else
1513 continue;
1514
1515 //Uses printf instead of PrintAndLog since the latter
1516 // adds linebreaks to each printout - this way was more convenient since we don't have to
1517 // allocate a string and write to that first...
1518
1519 for(int i= 0 ; i < 4 ; ++i)
1520 printf("%d",(x >> (3 - i)) & 1);
1521 }
1522 printf("\n");
1523
1524 return 0;
1525 }
1526
1527 static command_t CommandTable[] =
1528 {
1529 {"help", CmdHelp, 1, "This help"},
1530 {"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)"},
1531 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
1532 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
1533 {"bin2hex", Cmdbin2hex, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
1534 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
1535 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
1536 {"dec", CmdDec, 1, "Decimate samples"},
1537 {"detectclock", CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
1538 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
1539 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
1540 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
1541 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
1542 {"hex2bin", Cmdhex2bin, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
1543 {"hide", CmdHide, 1, "Hide graph window"},
1544 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
1545 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
1546 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
1547 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
1548 {"mtrim", CmdMtrim, 1, "<start> <stop> -- Trim out samples from the specified start to the specified stop"},
1549 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
1550 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
1551 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
1552 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
1553 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
1554 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
1555 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
1556 {"setgraphmarkers", CmdSetGraphMarkers, 1, "[orange_marker] [blue_marker] (in graph window)"},
1557 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
1558 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
1559 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
1560 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
1561 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
1562 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
1563 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
1564 {NULL, NULL, 0, NULL}
1565 };
1566
1567 int CmdData(const char *Cmd)
1568 {
1569 CmdsParse(CommandTable, Cmd);
1570 return 0;
1571 }
1572
1573 int CmdHelp(const char *Cmd)
1574 {
1575 CmdsHelp(CommandTable);
1576 return 0;
1577 }
Impressum, Datenschutz