1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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
7 //-----------------------------------------------------------------------------
8 // Data and Graph commands
9 //-----------------------------------------------------------------------------
13 #include <stdio.h> // also included in util.h
14 #include <string.h> // also included in util.h
16 #include <limits.h> // for CmdNorm INT_MIN && INT_MAX
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
28 uint8_t DemodBuffer
[MAX_DEMOD_BUF_LEN
];
29 uint8_t g_debugMode
=0;
30 size_t DemodBufferLen
=0;
31 int g_DemodStartIdx
=0;
34 static int CmdHelp(const char *Cmd
);
36 //set the demod buffer with given array of binary (one bit per byte)
38 void setDemodBuf(uint8_t *buff
, size_t size
, size_t startIdx
)
43 if ( size
> MAX_DEMOD_BUF_LEN
- startIdx
)
44 size
= MAX_DEMOD_BUF_LEN
- startIdx
;
47 for (; i
< size
; i
++){
48 DemodBuffer
[i
]=buff
[startIdx
++];
54 bool getDemodBuf(uint8_t *buff
, size_t *size
) {
55 if (buff
== NULL
) return false;
56 if (size
== NULL
) return false;
57 if (*size
== 0) return false;
59 *size
= (*size
> DemodBufferLen
) ? DemodBufferLen
: *size
;
61 memcpy(buff
, DemodBuffer
, *size
);
65 // option '1' to save DemodBuffer any other to restore
66 void save_restoreDB(uint8_t saveOpt
)
68 static uint8_t SavedDB
[MAX_DEMOD_BUF_LEN
];
69 static size_t SavedDBlen
;
70 static bool DB_Saved
= false;
71 static int savedDemodStartIdx
= 0;
72 static int savedDemodClock
= 0;
74 if (saveOpt
== GRAPH_SAVE
) { //save
76 memcpy(SavedDB
, DemodBuffer
, sizeof(DemodBuffer
));
77 SavedDBlen
= DemodBufferLen
;
79 savedDemodStartIdx
= g_DemodStartIdx
;
80 savedDemodClock
= g_DemodClock
;
81 } else if (DB_Saved
) { //restore
82 memcpy(DemodBuffer
, SavedDB
, sizeof(DemodBuffer
));
83 DemodBufferLen
= SavedDBlen
;
84 g_DemodClock
= savedDemodClock
;
85 g_DemodStartIdx
= savedDemodStartIdx
;
90 int CmdSetDebugMode(const char *Cmd
)
93 sscanf(Cmd
, "%i", &demod
);
94 g_debugMode
=(uint8_t)demod
;
98 int usage_data_printdemodbuf(){
99 PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
100 PrintAndLog("Options: ");
101 PrintAndLog(" h This help");
102 PrintAndLog(" x output in hex (omit for binary output)");
103 PrintAndLog(" o <offset> enter offset in # of bits");
104 PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
109 void printDemodBuff(void)
111 int bitLen
= DemodBufferLen
;
113 PrintAndLog("no bits found in demod buffer");
116 if (bitLen
>512) bitLen
=512; //max output to 512 bits if we have more - should be plenty
118 char *bin
= sprint_bin_break(DemodBuffer
,bitLen
,16);
119 PrintAndLog("%s",bin
);
124 int CmdPrintDemodBuff(const char *Cmd
)
126 char hex
[512]={0x00};
127 bool hexMode
= false;
129 uint32_t offset
= 0; //could be size_t but no param_get16...
130 uint32_t length
= 512;
132 while(param_getchar(Cmd
, cmdp
) != 0x00)
134 switch(param_getchar(Cmd
, cmdp
))
138 return usage_data_printdemodbuf();
146 offset
= param_get32ex(Cmd
, cmdp
+1, 0, 10);
147 if (!offset
) errors
= true;
152 length
= param_get32ex(Cmd
, cmdp
+1, 512, 10);
153 if (!length
) errors
= true;
157 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
164 if(errors
) return usage_data_printdemodbuf();
165 length
= (length
> (DemodBufferLen
-offset
)) ? DemodBufferLen
-offset
: length
;
166 int numBits
= (length
) & 0x00FFC; //make sure we don't exceed our string
169 char *buf
= (char *) (DemodBuffer
+ offset
);
170 numBits
= (numBits
> sizeof(hex
)) ? sizeof(hex
) : numBits
;
171 numBits
= binarraytohex(hex
, buf
, numBits
);
172 if (numBits
==0) return 0;
173 PrintAndLog("DemodBuffer: %s",hex
);
175 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer
+offset
,numBits
,16));
181 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
182 int CmdGetBitStream(const char *Cmd
)
186 for (i
= 0; i
< GraphTraceLen
; i
++) {
187 if (GraphBuffer
[i
] >= 1) {
193 RepaintGraphWindow();
198 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
199 // (amp may not be needed anymore)
200 //verbose will print results and demoding messages
201 //emSearch will auto search for EM410x format in bitstream
202 //askType switches decode: ask/raw = 0, ask/manchester = 1
203 int ASKDemod_ext(const char *Cmd
, bool verbose
, bool emSearch
, uint8_t askType
, bool *stCheck
) {
209 char amp
= param_getchar(Cmd
, 0);
210 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
211 sscanf(Cmd
, "%i %i %i %i %c", &clk
, &invert
, &maxErr
, &maxLen
, &
);
212 if (!maxLen
) maxLen
= BIGBUF_SIZE
;
213 if (invert
!= 0 && invert
!= 1) {
214 PrintAndLog("Invalid argument: %s", Cmd
);
221 size_t BitLen
= getFromGraphBuf(BitStream
);
222 if (g_debugMode
) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen
);
223 if (BitLen
< 255) return 0;
224 if (maxLen
< BitLen
&& maxLen
!= 0) BitLen
= maxLen
;
226 //amp before ST check
227 if (amp
== 'a' || amp
== 'A') {
228 askAmp(BitStream
, BitLen
);
231 size_t ststart
= 0, stend
= 0;
232 if (*stCheck
) st
= DetectST(BitStream
, &BitLen
, &foundclk
, &ststart
, &stend
);
235 clk
= (clk
== 0) ? foundclk
: clk
;
236 CursorCPos
= ststart
;
238 if (verbose
|| g_debugMode
) PrintAndLog("\nFound Sequence Terminator - First one is shown by orange and blue graph markers");
239 //Graph ST trim (for testing)
240 //for (int i = 0; i < BitLen; i++) {
241 // GraphBuffer[i] = BitStream[i]-128;
243 //RepaintGraphWindow();
246 int errCnt
= askdemod_ext(BitStream
, &BitLen
, &clk
, &invert
, maxErr
, askamp
, askType
, &startIdx
);
247 if (errCnt
<0 || BitLen
<16){ //if fatal error (or -1)
248 if (g_debugMode
) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt
,invert
,BitLen
,clk
);
251 if (errCnt
> maxErr
){
252 if (g_debugMode
) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt
, BitLen
, clk
);
255 if (verbose
|| g_debugMode
) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk
,invert
,BitLen
);
257 setDemodBuf(BitStream
,BitLen
,0);
258 setClockGrid(clk
, startIdx
);
260 if (verbose
|| g_debugMode
){
261 if (errCnt
>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt
);
262 if (askType
) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk
);
263 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk
);
264 // Now output the bitstream to the scrollback by line of 16 bits
271 AskEm410xDecode(true, &hi
, &lo
);
275 int ASKDemod(const char *Cmd
, bool verbose
, bool emSearch
, uint8_t askType
) {
277 return ASKDemod_ext(Cmd
, verbose
, emSearch
, askType
, &st
);
281 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
282 //attempts to demodulate ask while decoding manchester
283 //prints binary found and saves in graphbuffer for further commands
284 int Cmdaskmandemod(const char *Cmd
)
286 char cmdp
= param_getchar(Cmd
, 0);
287 if (strlen(Cmd
) > 45 || cmdp
== 'h' || cmdp
== 'H') {
288 PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
289 PrintAndLog(" ['s'] optional, check for Sequence Terminator");
290 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
291 PrintAndLog(" <invert>, 1 to invert output");
292 PrintAndLog(" [set maximum allowed errors], default = 100");
293 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
294 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
296 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
297 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
298 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
299 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
300 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");
305 return ASKDemod_ext(Cmd
++, true, false, 1, &st
);
306 else if (Cmd
[1] == 's')
307 return ASKDemod_ext(Cmd
+=2, true, false, 1, &st
);
309 return ASKDemod(Cmd
, true, false, 1);
314 //stricktly take 10 and 01 and convert to 0 and 1
315 int Cmdmandecoderaw(const char *Cmd
)
322 char cmdp
= param_getchar(Cmd
, 0);
323 if (strlen(Cmd
) > 5 || cmdp
== 'h' || cmdp
== 'H') {
324 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
325 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
326 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
327 PrintAndLog(" [invert] invert output");
328 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
330 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
333 if (DemodBufferLen
==0) return 0;
334 uint8_t BitStream
[MAX_DEMOD_BUF_LEN
]={0};
336 for (;i
<DemodBufferLen
;++i
){
337 if (DemodBuffer
[i
]>high
) high
=DemodBuffer
[i
];
338 else if(DemodBuffer
[i
]<low
) low
=DemodBuffer
[i
];
339 BitStream
[i
]=DemodBuffer
[i
];
341 if (high
>7 || low
<0 ){
342 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
346 sscanf(Cmd
, "%i %i", &invert
, &maxErr
);
348 uint8_t alignPos
= 0;
349 errCnt
=manrawdecode(BitStream
, &size
, invert
, &alignPos
);
351 PrintAndLog("Too many errors: %d",errCnt
);
354 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt
);
355 PrintAndLog("%s", sprint_bin_break(BitStream
, size
, 16));
360 if (Em410xDecode(BitStream
, &size
, &idx
, &hi
, &id
)){
361 //need to adjust to set bitstream back to manchester encoded data
362 //setDemodBuf(BitStream, size, idx);
372 //take 01 or 10 = 0 and 11 or 00 = 1
373 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
374 // and "invert" default = 0 if 1 it will invert output
375 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
376 int CmdBiphaseDecodeRaw(const char *Cmd
)
379 int offset
=0, invert
=0, maxErr
=20, errCnt
=0;
380 char cmdp
= param_getchar(Cmd
, 0);
381 if (strlen(Cmd
) > 3 || cmdp
== 'h' || cmdp
== 'H') {
382 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
383 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
384 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
385 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
387 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
388 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
389 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
391 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
392 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
395 sscanf(Cmd
, "%i %i %i", &offset
, &invert
, &maxErr
);
396 if (DemodBufferLen
==0) {
397 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
400 uint8_t BitStream
[MAX_DEMOD_BUF_LEN
]={0};
401 size
= sizeof(BitStream
);
402 if ( !getDemodBuf(BitStream
, &size
) ) return 0;
403 errCnt
=BiphaseRawDecode(BitStream
, &size
, &offset
, invert
);
405 PrintAndLog("Error during decode:%d", errCnt
);
409 PrintAndLog("Too many errors attempting to decode: %d",errCnt
);
414 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt
);
417 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset
,invert
);
418 PrintAndLog("%s", sprint_bin_break(BitStream
, size
, 16));
420 if (offset
) setDemodBuf(DemodBuffer
,DemodBufferLen
-offset
, offset
); //remove first bit from raw demod
421 setClockGrid(g_DemodClock
, g_DemodStartIdx
+ g_DemodClock
*offset
/2);
426 // - ASK Demod then Biphase decode GraphBuffer samples
427 int ASKbiphaseDemod(const char *Cmd
, bool verbose
)
429 //ask raw demod GraphBuffer first
430 int offset
=0, clk
=0, invert
=0, maxErr
=0;
431 sscanf(Cmd
, "%i %i %i %i", &offset
, &clk
, &invert
, &maxErr
);
433 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
];
434 size_t size
= getFromGraphBuf(BitStream
);
436 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
437 int errCnt
= askdemod_ext(BitStream
, &size
, &clk
, &invert
, maxErr
, 0, 0, &startIdx
);
438 if ( errCnt
< 0 || errCnt
> maxErr
) {
439 if (g_debugMode
) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt
, clk
);
443 //attempt to Biphase decode BitStream
444 errCnt
= BiphaseRawDecode(BitStream
, &size
, &offset
, invert
);
446 if (g_debugMode
|| verbose
) PrintAndLog("Error BiphaseRawDecode: %d", errCnt
);
449 if (errCnt
> maxErr
) {
450 if (g_debugMode
|| verbose
) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt
);
453 //success set DemodBuffer and return
454 setDemodBuf(BitStream
, size
, 0);
455 setClockGrid(clk
, startIdx
+ clk
*offset
/2);
456 if (g_debugMode
|| verbose
){
457 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset
,clk
,errCnt
);
462 //by marshmellow - see ASKbiphaseDemod
463 int Cmdaskbiphdemod(const char *Cmd
)
465 char cmdp
= param_getchar(Cmd
, 0);
466 if (strlen(Cmd
) > 25 || cmdp
== 'h' || cmdp
== 'H') {
467 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
468 PrintAndLog(" [offset], offset to begin biphase, default=0");
469 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
470 PrintAndLog(" <invert>, 1 to invert output");
471 PrintAndLog(" [set maximum allowed errors], default = 100");
472 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
473 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
474 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
475 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
476 PrintAndLog(" NOTE: any other arg must have previous args set to work");
478 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
480 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
481 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
482 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
483 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
484 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
485 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");
486 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");
489 return ASKbiphaseDemod(Cmd
, true);
492 //by marshmellow - see ASKDemod
493 int Cmdaskrawdemod(const char *Cmd
)
495 char cmdp
= param_getchar(Cmd
, 0);
496 if (strlen(Cmd
) > 35 || cmdp
== 'h' || cmdp
== 'H') {
497 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
498 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
499 PrintAndLog(" <invert>, 1 to invert output");
500 PrintAndLog(" [set maximum allowed errors], default = 100");
501 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
502 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
504 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
505 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
506 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
507 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
508 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
509 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");
510 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");
513 return ASKDemod(Cmd
, true, false, 0);
516 int AutoCorrelate(const int *in
, int *out
, size_t len
, int window
, bool SaveGrph
, bool verbose
)
518 static int CorrelBuffer
[MAX_GRAPH_TRACE_LEN
];
519 size_t Correlation
= 0;
522 if (verbose
) PrintAndLog("performing %d correlations", GraphTraceLen
- window
);
523 for (int i
= 0; i
< len
- window
; ++i
) {
525 for (int j
= 0; j
< window
; ++j
) {
526 sum
+= (in
[j
]*in
[i
+ j
]) / 256;
528 CorrelBuffer
[i
] = sum
;
529 if (sum
>= maxSum
-100 && sum
<= maxSum
+100) {
531 Correlation
= i
-lastMax
;
533 if (sum
> maxSum
) maxSum
= sum
;
534 } else if (sum
> maxSum
) {
539 if (Correlation
==0) {
540 //try again with wider margin
541 for (int i
= 0; i
< len
- window
; i
++) {
542 if (CorrelBuffer
[i
] >= maxSum
-(maxSum
*0.05) && CorrelBuffer
[i
] <= maxSum
+(maxSum
*0.05)) {
544 Correlation
= i
-lastMax
;
549 if (verbose
&& Correlation
> 0) PrintAndLog("Possible Correlation: %d samples",Correlation
);
552 //GraphTraceLen = GraphTraceLen - window;
553 memcpy(out
, CorrelBuffer
, len
* sizeof(int));
554 RepaintGraphWindow();
559 int usage_data_autocorr(void)
562 PrintAndLog("Usage: data autocorr [window] [g]");
563 PrintAndLog("Options: ");
564 PrintAndLog(" h This help");
565 PrintAndLog(" [window] window length for correlation - default = 4000");
566 PrintAndLog(" g save back to GraphBuffer (overwrite)");
570 int CmdAutoCorr(const char *Cmd
)
572 char cmdp
= param_getchar(Cmd
, 0);
573 if (cmdp
== 'h' || cmdp
== 'H')
574 return usage_data_autocorr();
575 int window
= 4000; //set default
577 bool updateGrph
= false;
578 sscanf(Cmd
, "%i %c", &window
, &grph
);
580 if (window
>= GraphTraceLen
) {
581 PrintAndLog("window must be smaller than trace (%d samples)",
585 if (grph
== 'g') updateGrph
=true;
586 return AutoCorrelate(GraphBuffer
, GraphBuffer
, GraphTraceLen
, window
, updateGrph
, true);
589 int CmdBitsamples(const char *Cmd
)
594 GetFromBigBuf(got
, sizeof(got
), 0 , NULL
, -1, false);
596 for (int j
= 0; j
< sizeof(got
); j
++) {
597 for (int k
= 0; k
< 8; k
++) {
598 if(got
[j
] & (1 << (7 - k
))) {
599 GraphBuffer
[cnt
++] = 1;
601 GraphBuffer
[cnt
++] = 0;
606 RepaintGraphWindow();
610 int CmdBuffClear(const char *Cmd
)
612 UsbCommand c
= {CMD_BUFF_CLEAR
};
618 int CmdDec(const char *Cmd
)
620 for (int i
= 0; i
< (GraphTraceLen
/ 2); ++i
)
621 GraphBuffer
[i
] = GraphBuffer
[i
* 2];
623 PrintAndLog("decimated by 2");
624 RepaintGraphWindow();
628 * Undecimate - I'd call it 'interpolate', but we'll save that
629 * name until someone does an actual interpolation command, not just
630 * blindly repeating samples
634 int CmdUndec(const char *Cmd
)
636 if(param_getchar(Cmd
, 0) == 'h')
638 PrintAndLog("Usage: data undec [factor]");
639 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
640 PrintAndLog("Options: ");
641 PrintAndLog(" h This help");
642 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
643 PrintAndLog("Example: 'data undec 3'");
647 uint8_t factor
= param_get8ex(Cmd
, 0,2, 10);
648 //We have memory, don't we?
649 int swap
[MAX_GRAPH_TRACE_LEN
] = { 0 };
650 uint32_t g_index
= 0, s_index
= 0;
651 while(g_index
< GraphTraceLen
&& s_index
+ factor
< MAX_GRAPH_TRACE_LEN
)
654 for(count
= 0; count
< factor
&& s_index
+ count
< MAX_GRAPH_TRACE_LEN
; count
++)
655 swap
[s_index
+count
] = GraphBuffer
[g_index
];
661 memcpy(GraphBuffer
, swap
, s_index
* sizeof(int));
662 GraphTraceLen
= s_index
;
663 RepaintGraphWindow();
668 //shift graph zero up or down based on input + or -
669 int CmdGraphShiftZero(const char *Cmd
)
673 //set options from parameters entered with the command
674 sscanf(Cmd
, "%i", &shift
);
676 for(int i
= 0; i
<GraphTraceLen
; i
++){
677 shiftedVal
=GraphBuffer
[i
]+shift
;
680 else if (shiftedVal
<-127)
682 GraphBuffer
[i
]= shiftedVal
;
688 int AskEdgeDetect(const int *in
, int *out
, int len
, int threshold
) {
690 for(int i
= 1; i
<len
; i
++) {
691 if (in
[i
]-in
[i
-1] >= threshold
) //large jump up
693 else if(in
[i
]-in
[i
-1] <= -1 * threshold
) //large jump down
701 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
702 //similar to dirtheshold, threshold commands
703 //takes a threshold length which is the measured length between two samples then determines an edge
704 int CmdAskEdgeDetect(const char *Cmd
)
708 sscanf(Cmd
, "%i", &thresLen
);
710 ans
= AskEdgeDetect(GraphBuffer
, GraphBuffer
, GraphTraceLen
, thresLen
);
711 RepaintGraphWindow();
715 /* Print our clock rate */
716 // uses data from graphbuffer
717 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
718 int CmdDetectClockRate(const char *Cmd
)
720 char cmdp
= param_getchar(Cmd
, 0);
721 if (strlen(Cmd
) > 6 || strlen(Cmd
) == 0 || cmdp
== 'h' || cmdp
== 'H') {
722 PrintAndLog("Usage: data detectclock [modulation] <clock>");
723 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
724 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
725 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
727 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
728 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
729 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
730 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
734 ans
= GetAskClock(Cmd
+1, true, false);
735 } else if (cmdp
== 'f'){
736 ans
= GetFskClock("", true, false);
737 } else if (cmdp
== 'n'){
738 ans
= GetNrzClock("", true, false);
739 } else if (cmdp
== 'p'){
740 ans
= GetPskClock("", true, false);
742 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
747 char *GetFSKType(uint8_t fchigh
, uint8_t fclow
, uint8_t invert
)
749 static char fType
[8];
750 memset(fType
, 0x00, 8);
751 char *fskType
= fType
;
752 if (fchigh
==10 && fclow
==8){
754 memcpy(fskType
, "FSK2a", 5);
756 memcpy(fskType
, "FSK2", 4);
757 } else if (fchigh
== 8 && fclow
== 5) {
759 memcpy(fskType
, "FSK1", 4);
761 memcpy(fskType
, "FSK1a", 5);
763 memcpy(fskType
, "FSK??", 5);
769 //fsk raw demod and print binary
770 //takes 4 arguments - Clock, invert, fchigh, fclow
771 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
772 int FSKrawDemod(const char *Cmd
, bool verbose
)
774 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
775 uint8_t rfLen
, invert
, fchigh
, fclow
;
777 //set options from parameters entered with the command
778 rfLen
= param_get8(Cmd
, 0);
779 invert
= param_get8(Cmd
, 1);
780 fchigh
= param_get8(Cmd
, 2);
781 fclow
= param_get8(Cmd
, 3);
783 if (strlen(Cmd
)>0 && strlen(Cmd
)<=2) {
785 invert
= 1; //if invert option only is used
789 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
790 size_t BitLen
= getFromGraphBuf(BitStream
);
791 if (BitLen
==0) return 0;
792 //get field clock lengths
794 if (!fchigh
|| !fclow
) {
795 fcs
= countFC(BitStream
, BitLen
, 1);
800 fchigh
= (fcs
>> 8) & 0x00FF;
801 fclow
= fcs
& 0x00FF;
804 //get bit clock length
806 int firstClockEdge
= 0; //todo - align grid on graph with this...
807 rfLen
= detectFSKClk(BitStream
, BitLen
, fchigh
, fclow
, &firstClockEdge
);
808 if (!rfLen
) rfLen
= 50;
811 int size
= fskdemod(BitStream
, BitLen
, rfLen
, invert
, fchigh
, fclow
, &startIdx
);
813 setDemodBuf(BitStream
,size
,0);
814 setClockGrid(rfLen
, startIdx
);
816 // Now output the bitstream to the scrollback by line of 16 bits
817 if (verbose
|| g_debugMode
) {
818 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen
, (unsigned int)invert
, (unsigned int)fchigh
, (unsigned int)fclow
);
819 PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh
,fclow
,invert
));
825 if (g_debugMode
) PrintAndLog("no FSK data found");
831 //fsk raw demod and print binary
832 //takes 4 arguments - Clock, invert, fchigh, fclow
833 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
834 int CmdFSKrawdemod(const char *Cmd
)
836 char cmdp
= param_getchar(Cmd
, 0);
837 if (strlen(Cmd
) > 20 || cmdp
== 'h' || cmdp
== 'H') {
838 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
839 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
840 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
841 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
842 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
844 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
845 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
846 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
847 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
848 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
849 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
850 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
853 return FSKrawDemod(Cmd
, true);
857 //attempt to psk1 demod graph buffer
858 int PSKDemod(const char *Cmd
, bool verbose
)
863 sscanf(Cmd
, "%i %i %i", &clk
, &invert
, &maxErr
);
868 if (invert
!= 0 && invert
!= 1) {
869 if (g_debugMode
|| verbose
) PrintAndLog("Invalid argument: %s", Cmd
);
872 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
873 size_t BitLen
= getFromGraphBuf(BitStream
);
874 if (BitLen
==0) return 0;
877 errCnt
= pskRawDemod_ext(BitStream
, &BitLen
, &clk
, &invert
, &startIdx
);
878 if (errCnt
> maxErr
){
879 if (g_debugMode
|| verbose
) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk
,invert
,BitLen
,errCnt
);
882 if (errCnt
<0|| BitLen
<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
883 if (g_debugMode
|| verbose
) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk
,invert
,BitLen
,errCnt
);
886 if (verbose
|| g_debugMode
){
887 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk
,invert
,BitLen
);
889 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt
);
892 //prime demod buffer for output
893 setDemodBuf(BitStream
,BitLen
,0);
894 setClockGrid(clk
, startIdx
);
900 // takes 3 arguments - clock, invert, maxErr as integers
901 // attempts to demodulate nrz only
902 // prints binary found and saves in demodbuffer for further commands
903 int NRZrawDemod(const char *Cmd
, bool verbose
)
908 sscanf(Cmd
, "%i %i %i", &clk
, &invert
, &maxErr
);
913 if (invert
!= 0 && invert
!= 1) {
914 PrintAndLog("Invalid argument: %s", Cmd
);
917 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
918 size_t BitLen
= getFromGraphBuf(BitStream
);
919 if (BitLen
==0) return 0;
922 errCnt
= nrzRawDemod(BitStream
, &BitLen
, &clk
, &invert
, &clkStartIdx
);
923 if (errCnt
> maxErr
){
924 if (g_debugMode
) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk
,invert
,BitLen
,errCnt
);
927 if (errCnt
<0 || BitLen
<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
928 if (g_debugMode
) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk
,invert
,BitLen
,errCnt
);
931 if (verbose
|| g_debugMode
) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk
,invert
,BitLen
);
932 //prime demod buffer for output
933 setDemodBuf(BitStream
,BitLen
,0);
934 setClockGrid(clk
, clkStartIdx
);
937 if (errCnt
>0 && (verbose
|| g_debugMode
)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt
);
938 if (verbose
|| g_debugMode
) {
939 PrintAndLog("NRZ demoded bitstream:");
940 // Now output the bitstream to the scrollback by line of 16 bits
946 int CmdNRZrawDemod(const char *Cmd
)
948 char cmdp
= param_getchar(Cmd
, 0);
949 if (strlen(Cmd
) > 16 || cmdp
== 'h' || cmdp
== 'H') {
950 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
951 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
952 PrintAndLog(" <invert>, 1 for invert output");
953 PrintAndLog(" [set maximum allowed errors], default = 100.");
955 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
956 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
957 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
958 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
959 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");
962 return NRZrawDemod(Cmd
, true);
966 // takes 3 arguments - clock, invert, maxErr as integers
967 // attempts to demodulate psk only
968 // prints binary found and saves in demodbuffer for further commands
969 int CmdPSK1rawDemod(const char *Cmd
)
972 char cmdp
= param_getchar(Cmd
, 0);
973 if (strlen(Cmd
) > 16 || cmdp
== 'h' || cmdp
== 'H') {
974 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
975 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
976 PrintAndLog(" <invert>, 1 for invert output");
977 PrintAndLog(" [set maximum allowed errors], default = 100.");
979 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
980 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
981 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
982 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
983 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");
986 ans
= PSKDemod(Cmd
, true);
989 if (g_debugMode
) PrintAndLog("Error demoding: %d",ans
);
993 PrintAndLog("PSK1 demoded bitstream:");
994 // Now output the bitstream to the scrollback by line of 16 bits
1000 // takes same args as cmdpsk1rawdemod
1001 int CmdPSK2rawDemod(const char *Cmd
)
1004 char cmdp
= param_getchar(Cmd
, 0);
1005 if (strlen(Cmd
) > 16 || cmdp
== 'h' || cmdp
== 'H') {
1006 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
1007 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1008 PrintAndLog(" <invert>, 1 for invert output");
1009 PrintAndLog(" [set maximum allowed errors], default = 100.");
1011 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
1012 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1013 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1014 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1015 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");
1018 ans
=PSKDemod(Cmd
, true);
1020 if (g_debugMode
) PrintAndLog("Error demoding: %d",ans
);
1023 psk1TOpsk2(DemodBuffer
, DemodBufferLen
);
1024 PrintAndLog("PSK2 demoded bitstream:");
1025 // Now output the bitstream to the scrollback by line of 16 bits
1030 // by marshmellow - combines all raw demod functions into one menu command
1031 int CmdRawDemod(const char *Cmd
)
1033 char cmdp
= Cmd
[0]; //param_getchar(Cmd, 0);
1035 if (strlen(Cmd
) > 35 || cmdp
== 'h' || cmdp
== 'H' || strlen(Cmd
)<2) {
1036 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
1037 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
1038 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
1039 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
1040 PrintAndLog(" <options> see specific modulation help for optional parameters");
1042 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
1043 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
1044 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
1045 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
1046 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
1047 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
1048 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
1049 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
1052 char cmdp2
= Cmd
[1];
1054 if (cmdp
== 'f' && cmdp2
== 's'){
1055 ans
= CmdFSKrawdemod(Cmd
+2);
1056 } else if(cmdp
== 'a' && cmdp2
== 'b'){
1057 ans
= Cmdaskbiphdemod(Cmd
+2);
1058 } else if(cmdp
== 'a' && cmdp2
== 'm'){
1059 ans
= Cmdaskmandemod(Cmd
+2);
1060 } else if(cmdp
== 'a' && cmdp2
== 'r'){
1061 ans
= Cmdaskrawdemod(Cmd
+2);
1062 } else if(cmdp
== 'n' && cmdp2
== 'r'){
1063 ans
= CmdNRZrawDemod(Cmd
+2);
1064 } else if(cmdp
== 'p' && cmdp2
== '1'){
1065 ans
= CmdPSK1rawDemod(Cmd
+2);
1066 } else if(cmdp
== 'p' && cmdp2
== '2'){
1067 ans
= CmdPSK2rawDemod(Cmd
+2);
1069 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1074 void setClockGrid(int clk
, int offset
) {
1075 g_DemodStartIdx
= offset
;
1077 if (g_debugMode
) PrintAndLog("demodoffset %d, clk %d",offset
,clk
);
1079 if (offset
> clk
) offset
%= clk
;
1080 if (offset
< 0) offset
+= clk
;
1082 if (offset
> GraphTraceLen
|| offset
< 0) return;
1083 if (clk
< 8 || clk
> GraphTraceLen
) {
1087 PlotGridXdefault
= 0;
1088 RepaintGraphWindow();
1091 GridOffset
= offset
;
1093 PlotGridXdefault
= clk
;
1094 RepaintGraphWindow();
1098 int CmdGrid(const char *Cmd
)
1100 sscanf(Cmd
, "%i %i", &PlotGridX
, &PlotGridY
);
1101 PlotGridXdefault
= PlotGridX
;
1102 PlotGridYdefault
= PlotGridY
;
1103 RepaintGraphWindow();
1107 int CmdSetGraphMarkers(const char *Cmd
) {
1108 sscanf(Cmd
, "%i %i", &CursorCPos
, &CursorDPos
);
1109 RepaintGraphWindow();
1113 int CmdHexsamples(const char *Cmd
)
1118 char string_buf
[25];
1119 char* string_ptr
= string_buf
;
1120 uint8_t got
[BIGBUF_SIZE
];
1122 sscanf(Cmd
, "%i %i", &requested
, &offset
);
1124 /* if no args send something */
1125 if (requested
== 0) {
1128 if (offset
+ requested
> sizeof(got
)) {
1129 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE
);
1133 GetFromBigBuf(got
, requested
, offset
, NULL
, -1, false);
1136 for (j
= 0; j
< requested
; j
++) {
1138 string_ptr
+= sprintf(string_ptr
, "%02x ", got
[j
]);
1140 *(string_ptr
- 1) = '\0'; // remove the trailing space
1141 PrintAndLog("%s", string_buf
);
1142 string_buf
[0] = '\0';
1143 string_ptr
= string_buf
;
1146 if (j
== requested
- 1 && string_buf
[0] != '\0') { // print any remaining bytes
1147 *(string_ptr
- 1) = '\0';
1148 PrintAndLog("%s", string_buf
);
1149 string_buf
[0] = '\0';
1155 int CmdHide(const char *Cmd
)
1161 //zero mean GraphBuffer
1162 int CmdHpf(const char *Cmd
)
1167 for (i
= 10; i
< GraphTraceLen
; ++i
)
1168 accum
+= GraphBuffer
[i
];
1169 accum
/= (GraphTraceLen
- 10);
1170 for (i
= 0; i
< GraphTraceLen
; ++i
)
1171 GraphBuffer
[i
] -= accum
;
1173 RepaintGraphWindow();
1177 uint8_t getByte(uint8_t bits_per_sample
, BitstreamIn
* b
)
1181 for(i
=0 ; i
< bits_per_sample
; i
++)
1183 val
|= (headBit(b
) << (7-i
));
1188 int getSamples(int n
, bool silent
)
1190 //If we get all but the last byte in bigbuf,
1191 // we don't have to worry about remaining trash
1192 // in the last byte in case the bits-per-sample
1193 // does not line up on byte boundaries
1195 uint8_t got
[BIGBUF_SIZE
-1] = { 0 };
1197 if (n
== 0 || n
> sizeof(got
))
1200 if (!silent
) PrintAndLog("Reading %d bytes from device memory\n", n
);
1201 UsbCommand response
;
1202 GetFromBigBuf(got
, n
, 0, &response
, -1, false);
1203 if (!silent
) PrintAndLog("Data fetched");
1204 uint8_t bits_per_sample
= 8;
1206 //Old devices without this feature would send 0 at arg[0]
1207 if(response
.arg
[0] > 0)
1209 sample_config
*sc
= (sample_config
*) response
.d
.asBytes
;
1210 if (!silent
) PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc
->bits_per_sample
1212 bits_per_sample
= sc
->bits_per_sample
;
1214 if(bits_per_sample
< 8)
1216 if (!silent
) PrintAndLog("Unpacking...");
1217 BitstreamIn bout
= { got
, bits_per_sample
* n
, 0};
1219 for (j
= 0; j
* bits_per_sample
< n
* 8 && j
< n
; j
++) {
1220 uint8_t sample
= getByte(bits_per_sample
, &bout
);
1221 GraphBuffer
[j
] = ((int) sample
)- 128;
1224 PrintAndLog("Unpacked %d samples" , j
);
1227 for (int j
= 0; j
< n
; j
++) {
1228 GraphBuffer
[j
] = ((int)got
[j
]) - 128;
1235 RepaintGraphWindow();
1239 int CmdSamples(const char *Cmd
)
1241 int n
= strtol(Cmd
, NULL
, 0);
1242 return getSamples(n
, false);
1245 int CmdTuneSamples(const char *Cmd
)
1247 int timeout
= 0, arg
= FLAG_TUNE_ALL
;
1251 } else if (*Cmd
== 'h') {
1253 } else if (*Cmd
!= '\0') {
1254 PrintAndLog("use 'tune' or 'tune l' or 'tune h'");
1258 printf("\nMeasuring antenna characteristics, please wait...");
1260 UsbCommand c
= {CMD_MEASURE_ANTENNA_TUNING
, {arg
, 0, 0}};
1264 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING
,&resp
,1000)) {
1268 PrintAndLog("\nNo response from Proxmark. Aborting...");
1274 int vLf125
, vLf134
, vHf
;
1275 vLf125
= resp
.arg
[0] & 0xffff;
1276 vLf134
= resp
.arg
[0] >> 16;
1277 vHf
= resp
.arg
[1] & 0xffff;;
1278 peakf
= resp
.arg
[2] & 0xffff;
1279 peakv
= resp
.arg
[2] >> 16;
1281 if (arg
& FLAG_TUNE_LF
)
1283 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125
/500.0);
1284 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134
/500.0);
1285 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv
/500.0, 12000.0/(peakf
+1));
1287 if (arg
& FLAG_TUNE_HF
)
1288 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf
/1000.0);
1290 #define LF_UNUSABLE_V 3000
1291 #define LF_MARGINAL_V 15000
1292 #define HF_UNUSABLE_V 3200
1293 #define HF_MARGINAL_V 8000
1295 if (arg
& FLAG_TUNE_LF
)
1297 if (peakv
<<1 < LF_UNUSABLE_V
)
1298 PrintAndLog("# Your LF antenna is unusable.");
1299 else if (peakv
<<1 < LF_MARGINAL_V
)
1300 PrintAndLog("# Your LF antenna is marginal.");
1302 if (arg
& FLAG_TUNE_HF
)
1304 if (vHf
< HF_UNUSABLE_V
)
1305 PrintAndLog("# Your HF antenna is unusable.");
1306 else if (vHf
< HF_MARGINAL_V
)
1307 PrintAndLog("# Your HF antenna is marginal.");
1310 if (peakv
<<1 >= LF_UNUSABLE_V
) {
1311 for (int i
= 0; i
< 256; i
++) {
1312 GraphBuffer
[i
] = resp
.d
.asBytes
[i
] - 128;
1314 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
1316 GraphTraceLen
= 256;
1318 RepaintGraphWindow();
1325 int CmdLoad(const char *Cmd
)
1327 char filename
[FILE_PATH_SIZE
] = {0x00};
1331 if (len
> FILE_PATH_SIZE
) len
= FILE_PATH_SIZE
;
1332 memcpy(filename
, Cmd
, len
);
1334 FILE *f
= fopen(filename
, "r");
1336 PrintAndLog("couldn't open '%s'", filename
);
1342 while (fgets(line
, sizeof (line
), f
)) {
1343 GraphBuffer
[GraphTraceLen
] = atoi(line
);
1347 PrintAndLog("loaded %d samples", GraphTraceLen
);
1350 RepaintGraphWindow();
1354 int CmdLtrim(const char *Cmd
)
1357 if (GraphTraceLen
<=0) return 0;
1358 for (int i
= ds
; i
< GraphTraceLen
; ++i
)
1359 GraphBuffer
[i
-ds
] = GraphBuffer
[i
];
1360 GraphTraceLen
-= ds
;
1362 RepaintGraphWindow();
1366 // trim graph to input argument length
1367 int CmdRtrim(const char *Cmd
)
1373 RepaintGraphWindow();
1377 // trim graph (middle) piece
1378 int CmdMtrim(const char *Cmd
) {
1379 int start
= 0, stop
= 0;
1380 sscanf(Cmd
, "%i %i", &start
, &stop
);
1382 if (start
> GraphTraceLen
|| stop
> GraphTraceLen
|| start
> stop
) return 0;
1383 start
++; //leave start position sample
1385 GraphTraceLen
= stop
- start
;
1386 for (int i
= 0; i
< GraphTraceLen
; i
++) {
1387 GraphBuffer
[i
] = GraphBuffer
[start
+i
];
1393 int CmdNorm(const char *Cmd
)
1396 int max
= INT_MIN
, min
= INT_MAX
;
1398 for (i
= 10; i
< GraphTraceLen
; ++i
) {
1399 if (GraphBuffer
[i
] > max
)
1400 max
= GraphBuffer
[i
];
1401 if (GraphBuffer
[i
] < min
)
1402 min
= GraphBuffer
[i
];
1406 for (i
= 0; i
< GraphTraceLen
; ++i
) {
1407 GraphBuffer
[i
] = ((long)(GraphBuffer
[i
] - ((max
+ min
) / 2)) * 256) / (max
- min
);
1408 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
1411 RepaintGraphWindow();
1415 int CmdPlot(const char *Cmd
)
1421 int CmdSave(const char *Cmd
)
1423 char filename
[FILE_PATH_SIZE
] = {0x00};
1427 if (len
> FILE_PATH_SIZE
) len
= FILE_PATH_SIZE
;
1428 memcpy(filename
, Cmd
, len
);
1431 FILE *f
= fopen(filename
, "w");
1433 PrintAndLog("couldn't open '%s'", filename
);
1437 for (i
= 0; i
< GraphTraceLen
; i
++) {
1438 fprintf(f
, "%d\n", GraphBuffer
[i
]);
1441 PrintAndLog("saved to '%s'", Cmd
);
1445 int CmdScale(const char *Cmd
)
1447 CursorScaleFactor
= atoi(Cmd
);
1448 if (CursorScaleFactor
== 0) {
1449 PrintAndLog("bad, can't have zero scale");
1450 CursorScaleFactor
= 1;
1452 RepaintGraphWindow();
1456 int directionalThreshold(const int* in
, int *out
, size_t len
, int8_t up
, int8_t down
)
1458 int lastValue
= in
[0];
1459 out
[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
1461 for (int i
= 1; i
< len
; ++i
) {
1462 // Apply first threshold to samples heading up
1463 if (in
[i
] >= up
&& in
[i
] > lastValue
)
1465 lastValue
= out
[i
]; // Buffer last value as we overwrite it.
1468 // Apply second threshold to samples heading down
1469 else if (in
[i
] <= down
&& in
[i
] < lastValue
)
1471 lastValue
= out
[i
]; // Buffer last value as we overwrite it.
1476 lastValue
= out
[i
]; // Buffer last value as we overwrite it.
1480 out
[0] = out
[1]; // Align with first edited sample.
1484 int CmdDirectionalThreshold(const char *Cmd
)
1486 int8_t upThres
= param_get8(Cmd
, 0);
1487 int8_t downThres
= param_get8(Cmd
, 1);
1489 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres
, downThres
);
1491 directionalThreshold(GraphBuffer
, GraphBuffer
,GraphTraceLen
, upThres
, downThres
);
1492 RepaintGraphWindow();
1496 int CmdZerocrossings(const char *Cmd
)
1498 // Zero-crossings aren't meaningful unless the signal is zero-mean.
1505 for (int i
= 0; i
< GraphTraceLen
; ++i
) {
1506 if (GraphBuffer
[i
] * sign
>= 0) {
1507 // No change in sign, reproduce the previous sample count.
1509 GraphBuffer
[i
] = lastZc
;
1511 // Change in sign, reset the sample count.
1513 GraphBuffer
[i
] = lastZc
;
1521 RepaintGraphWindow();
1525 int usage_data_bin2hex(){
1526 PrintAndLog("Usage: data bin2hex <binary_digits>");
1527 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
1532 * @brief Utility for conversion via cmdline.
1536 int Cmdbin2hex(const char *Cmd
)
1539 if(param_getptr(Cmd
, &bg
, &en
, 0))
1541 return usage_data_bin2hex();
1543 //Number of digits supplied as argument
1544 size_t length
= en
- bg
+1;
1545 size_t bytelen
= (length
+7) / 8;
1546 uint8_t* arr
= (uint8_t *) malloc(bytelen
);
1547 memset(arr
, 0, bytelen
);
1548 BitstreamOut bout
= { arr
, 0, 0 };
1550 for(; bg
<= en
;bg
++)
1553 if( c
== '1') pushBit(&bout
, 1);
1554 else if( c
== '0') pushBit(&bout
, 0);
1555 else PrintAndLog("Ignoring '%c'", c
);
1558 if(bout
.numbits
% 8 != 0)
1560 printf("[padded with %d zeroes]\n", 8-(bout
.numbits
% 8));
1563 //Uses printf instead of PrintAndLog since the latter
1564 // adds linebreaks to each printout - this way was more convenient since we don't have to
1565 // allocate a string and write to that first...
1566 for(size_t x
= 0; x
< bytelen
; x
++)
1568 printf("%02X", arr
[x
]);
1575 int usage_data_hex2bin() {
1576 PrintAndLog("Usage: data hex2bin <hex_digits>");
1577 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
1582 int Cmdhex2bin(const char *Cmd
)
1585 if(param_getptr(Cmd
, &bg
, &en
, 0))
1587 return usage_data_hex2bin();
1595 if (x
>= 'a' && x
<= 'f')
1597 // convert to numeric value
1598 if (x
>= '0' && x
<= '9')
1600 else if (x
>= 'A' && x
<= 'F')
1605 //Uses printf instead of PrintAndLog since the latter
1606 // adds linebreaks to each printout - this way was more convenient since we don't have to
1607 // allocate a string and write to that first...
1609 for(int i
= 0 ; i
< 4 ; ++i
)
1610 printf("%d",(x
>> (3 - i
)) & 1);
1617 /* // example of FSK2 RF/50 Tones
1618 static const int LowTone[] = {
1619 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1620 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1621 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1622 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1623 1, 1, 1, 1, 1, -1, -1, -1, -1, -1
1625 static const int HighTone[] = {
1626 1, 1, 1, 1, 1, -1, -1, -1, -1, // note one extra 1 to padd due to 50/8 remainder (1/2 the remainder)
1627 1, 1, 1, 1, -1, -1, -1, -1,
1628 1, 1, 1, 1, -1, -1, -1, -1,
1629 1, 1, 1, 1, -1, -1, -1, -1,
1630 1, 1, 1, 1, -1, -1, -1, -1,
1631 1, 1, 1, 1, -1, -1, -1, -1, -1, // note one extra -1 to padd due to 50/8 remainder
1634 void GetHiLoTone(int *LowTone
, int *HighTone
, int clk
, int LowToneFC
, int HighToneFC
) {
1636 int Left_Modifier
= ((clk
% LowToneFC
) % 2) + ((clk
% LowToneFC
)/2);
1637 int Right_Modifier
= (clk
% LowToneFC
) / 2;
1638 //int HighToneMod = clk mod HighToneFC;
1639 int LeftHalfFCCnt
= (LowToneFC
% 2) + (LowToneFC
/2); //truncate
1640 int FCs_per_clk
= clk
/LowToneFC
;
1642 // need to correctly split up the clock to field clocks.
1643 // First attempt uses modifiers on each end to make up for when FCs don't evenly divide into Clk
1645 // start with LowTone
1646 // set extra 1 modifiers to make up for when FC doesn't divide evenly into Clk
1647 for (i
= 0; i
< Left_Modifier
; i
++) {
1651 // loop # of field clocks inside the main clock
1652 for (i
= 0; i
< (FCs_per_clk
); i
++) {
1653 // loop # of samples per field clock
1654 for (j
= 0; j
< LowToneFC
; j
++) {
1655 LowTone
[(i
*LowToneFC
)+Left_Modifier
+j
] = ( j
< LeftHalfFCCnt
) ? 1 : -1;
1660 // add last -1 modifiers
1661 for (k
= 0; k
< Right_Modifier
; k
++) {
1662 LowTone
[((i
-1)*LowToneFC
)+Left_Modifier
+j
+k
] = -1;
1666 Left_Modifier
= ((clk
% HighToneFC
) % 2) + ((clk
% HighToneFC
)/2);
1667 Right_Modifier
= (clk
% HighToneFC
) / 2;
1668 LeftHalfFCCnt
= (HighToneFC
% 2) + (HighToneFC
/2); //truncate
1669 FCs_per_clk
= clk
/HighToneFC
;
1671 for (i
= 0; i
< Left_Modifier
; i
++) {
1675 // loop # of field clocks inside the main clock
1676 for (i
= 0; i
< (FCs_per_clk
); i
++) {
1677 // loop # of samples per field clock
1678 for (j
= 0; j
< HighToneFC
; j
++) {
1679 HighTone
[(i
*HighToneFC
)+Left_Modifier
+j
] = ( j
< LeftHalfFCCnt
) ? 1 : -1;
1683 // add last -1 modifiers
1684 for (k
= 0; k
< Right_Modifier
; k
++) {
1685 PrintAndLog("(i-1)*HighToneFC+lm+j+k %i",((i
-1)*HighToneFC
)+Left_Modifier
+j
+k
);
1686 HighTone
[((i
-1)*HighToneFC
)+Left_Modifier
+j
+k
] = -1;
1688 if (g_debugMode
== 2) {
1689 for ( i
= 0; i
< clk
; i
++) {
1690 PrintAndLog("Low: %i, High: %i",LowTone
[i
],HighTone
[i
]);
1695 //old CmdFSKdemod adapted by marshmellow
1696 //converts FSK to clear NRZ style wave. (or demodulates)
1697 int FSKToNRZ(int *data
, int *dataLen
, int clk
, int LowToneFC
, int HighToneFC
) {
1699 if (clk
== 0 || LowToneFC
== 0 || HighToneFC
== 0) {
1700 int firstClockEdge
=0;
1701 ans
= fskClocks((uint8_t *) &LowToneFC
, (uint8_t *) &HighToneFC
, (uint8_t *) &clk
, false, &firstClockEdge
);
1702 if (g_debugMode
> 1) {
1703 PrintAndLog ("DEBUG FSKtoNRZ: detected clocks: fc_low %i, fc_high %i, clk %i, firstClockEdge %i, ans %u", LowToneFC
, HighToneFC
, clk
, firstClockEdge
, ans
);
1706 // currently only know fsk modulations with field clocks < 10 samples and > 4 samples. filter out to remove false positives (and possibly destroying ask/psk modulated waves...)
1707 if (ans
== 0 || clk
== 0 || LowToneFC
== 0 || HighToneFC
== 0 || LowToneFC
> 10 || HighToneFC
< 4) {
1708 if (g_debugMode
> 1) {
1709 PrintAndLog ("DEBUG FSKtoNRZ: no fsk clocks found");
1715 GetHiLoTone(LowTone
, HighTone
, clk
, LowToneFC
, HighToneFC
);
1719 // loop through ([all samples] - clk)
1720 for (i
= 0; i
< *dataLen
- clk
; ++i
) {
1721 int lowSum
= 0, highSum
= 0;
1723 // sum all samples together starting from this sample for [clk] samples for each tone (multiply tone value with sample data)
1724 for (j
= 0; j
< clk
; ++j
) {
1725 lowSum
+= LowTone
[j
] * data
[i
+j
];
1726 highSum
+= HighTone
[j
] * data
[i
+ j
];
1728 // get abs( [average sample value per clk] * 100 ) (or a rolling average of sorts)
1729 lowSum
= abs(100 * lowSum
/ clk
);
1730 highSum
= abs(100 * highSum
/ clk
);
1731 // save these back to buffer for later use
1732 data
[i
] = (highSum
<< 16) | lowSum
;
1735 // now we have the abs( [average sample value per clk] * 100 ) for each tone
1736 // loop through again [all samples] - clk - 16
1737 // note why 16??? is 16 the largest FC? changed to LowToneFC as that should be the > fc
1738 for(i
= 0; i
< *dataLen
- clk
- LowToneFC
; ++i
) {
1739 int lowTot
= 0, highTot
= 0;
1741 // sum a field clock width of abs( [average sample values per clk] * 100) for each tone
1742 for (j
= 0; j
< LowToneFC
; ++j
) { //10 for fsk2
1743 lowTot
+= (data
[i
+ j
] & 0xffff);
1745 for (j
= 0; j
< HighToneFC
; j
++) { //8 for fsk2
1746 highTot
+= (data
[i
+ j
] >> 16);
1749 // subtract the sum of lowTone averages by the sum of highTone averages as it
1750 // and write back the new graph value
1751 data
[i
] = lowTot
- highTot
;
1753 // update dataLen to what we put back to the data sample buffer
1754 *dataLen
-= (clk
+ LowToneFC
);
1758 int usage_data_fsktonrz() {
1759 PrintAndLog("Usage: data fsktonrz c <clock> l <fc_low> f <fc_high>");
1760 PrintAndLog("Options: ");
1761 PrintAndLog(" h This help");
1762 PrintAndLog(" c <clock> enter the a clock (omit to autodetect)");
1763 PrintAndLog(" l <fc_low> enter a field clock (omit to autodetect)");
1764 PrintAndLog(" f <fc_high> enter a field clock (omit to autodetect)");
1768 int CmdFSKToNRZ(const char *Cmd
) {
1769 // take clk, fc_low, fc_high
1771 bool errors
= false;
1774 int fc_low
= 10, fc_high
= 8;
1775 while(param_getchar(Cmd
, cmdp
) != 0x00)
1777 switch(param_getchar(Cmd
, cmdp
))
1781 return usage_data_fsktonrz();
1784 clk
= param_get32ex(Cmd
, cmdp
+1, 0, 10);
1789 fc_high
= param_get32ex(Cmd
, cmdp
+1, 0, 10);
1794 fc_low
= param_get32ex(Cmd
, cmdp
+1, 0, 10);
1798 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
1805 if(errors
) return usage_data_fsktonrz();
1809 int ans
= FSKToNRZ(GraphBuffer
, &GraphTraceLen
, clk
, fc_low
, fc_high
);
1811 RepaintGraphWindow();
1816 static command_t CommandTable
[] =
1818 {"help", CmdHelp
, 1, "This help"},
1819 {"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)"},
1820 {"autocorr", CmdAutoCorr
, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
1821 {"biphaserawdecode",CmdBiphaseDecodeRaw
,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
1822 {"bin2hex", Cmdbin2hex
, 1, "bin2hex <digits> -- Converts binary to hexadecimal"},
1823 {"bitsamples", CmdBitsamples
, 0, "Get raw samples as bitstring"},
1824 {"buffclear", CmdBuffClear
, 1, "Clear sample buffer and graph window"},
1825 {"dec", CmdDec
, 1, "Decimate samples"},
1826 {"detectclock", CmdDetectClockRate
, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
1827 {"fsktonrz", CmdFSKToNRZ
, 1, "Convert fsk2 to nrz wave for alternate fsk demodulating (for weak fsk)"},
1828 {"getbitstream", CmdGetBitStream
, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
1829 {"grid", CmdGrid
, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
1830 {"hexsamples", CmdHexsamples
, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
1831 {"hex2bin", Cmdhex2bin
, 1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
1832 {"hide", CmdHide
, 1, "Hide graph window"},
1833 {"hpf", CmdHpf
, 1, "Remove DC offset from trace"},
1834 {"load", CmdLoad
, 1, "<filename> -- Load trace (to graph window"},
1835 {"ltrim", CmdLtrim
, 1, "<samples> -- Trim samples from left of trace"},
1836 {"rtrim", CmdRtrim
, 1, "<location to end trace> -- Trim samples from right of trace"},
1837 {"mtrim", CmdMtrim
, 1, "<start> <stop> -- Trim out samples from the specified start to the specified stop"},
1838 {"manrawdecode", Cmdmandecoderaw
, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
1839 {"norm", CmdNorm
, 1, "Normalize max/min to +/-128"},
1840 {"plot", CmdPlot
, 1, "Show graph window (hit 'h' in window for keystroke help)"},
1841 {"printdemodbuffer",CmdPrintDemodBuff
, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
1842 {"rawdemod", CmdRawDemod
, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
1843 {"samples", CmdSamples
, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
1844 {"save", CmdSave
, 1, "<filename> -- Save trace (from graph window)"},
1845 {"setgraphmarkers", CmdSetGraphMarkers
, 1, "[orange_marker] [blue_marker] (in graph window)"},
1846 {"scale", CmdScale
, 1, "<int> -- Set cursor display scale"},
1847 {"setdebugmode", CmdSetDebugMode
, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
1848 {"shiftgraphzero", CmdGraphShiftZero
, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
1849 {"dirthreshold", CmdDirectionalThreshold
, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
1850 {"tune", CmdTuneSamples
, 0, "Get hw tune samples for graph window"},
1851 {"undec", CmdUndec
, 1, "Un-decimate samples by 2"},
1852 {"zerocrossings", CmdZerocrossings
, 1, "Count time between zero-crossings"},
1853 {NULL
, NULL
, 0, NULL
}
1856 int CmdData(const char *Cmd
)
1858 CmdsParse(CommandTable
, Cmd
);
1862 int CmdHelp(const char *Cmd
)
1864 CmdsHelp(CommandTable
);