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 //-----------------------------------------------------------------------------
15 #include "proxmark3.h"
19 #include "cmdparser.h"
24 uint8_t DemodBuffer
[MAX_DEMOD_BUF_LEN
];
27 static int CmdHelp(const char *Cmd
);
29 //set the demod buffer with given array of binary (one bit per byte)
31 void setDemodBuf(uint8_t *buff
, size_t size
, size_t startIdx
)
34 for (; i
< size
; i
++){
35 DemodBuffer
[i
]=buff
[startIdx
++];
41 int CmdSetDebugMode(const char *Cmd
)
44 sscanf(Cmd
, "%i", &demod
);
45 g_debugMode
=(uint8_t)demod
;
53 int bitLen
= DemodBufferLen
;
55 PrintAndLog("no bits found in demod buffer");
58 if (bitLen
>512) bitLen
=512; //max output to 512 bits if we have more - should be plenty
60 // ensure equally divided by 16
63 for (i
= 0; i
<= (bitLen
-16); i
+=16) {
64 PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
86 int CmdAmp(const char *Cmd
)
88 int i
, rising
, falling
;
89 int max
= INT_MIN
, min
= INT_MAX
;
91 for (i
= 10; i
< GraphTraceLen
; ++i
) {
92 if (GraphBuffer
[i
] > max
)
94 if (GraphBuffer
[i
] < min
)
100 for (i
= 0; i
< GraphTraceLen
; ++i
) {
101 if (GraphBuffer
[i
+ 1] < GraphBuffer
[i
]) {
103 GraphBuffer
[i
] = max
;
108 if (GraphBuffer
[i
+ 1] > GraphBuffer
[i
]) {
110 GraphBuffer
[i
] = min
;
117 RepaintGraphWindow();
122 * Generic command to demodulate ASK.
124 * Argument is convention: positive or negative (High mod means zero
125 * or high mod means one)
127 * Updates the Graph trace with 0/1 values
132 //this method is dependant on all highs and lows to be the same(or clipped) this creates issues[marshmellow] it also ignores the clock
133 int Cmdaskdemod(const char *Cmd
)
136 int c
, high
= 0, low
= 0;
138 // TODO: complain if we do not give 2 arguments here !
139 // (AL - this doesn't make sense! we're only using one argument!!!)
140 sscanf(Cmd
, "%i", &c
);
142 /* Detect high and lows and clock */
144 for (i
= 0; i
< GraphTraceLen
; ++i
)
146 if (GraphBuffer
[i
] > high
)
147 high
= GraphBuffer
[i
];
148 else if (GraphBuffer
[i
] < low
)
149 low
= GraphBuffer
[i
];
153 if (c
!= 0 && c
!= 1) {
154 PrintAndLog("Invalid argument: %s", Cmd
);
158 if (GraphBuffer
[0] > 0) {
159 GraphBuffer
[0] = 1-c
;
163 for (i
= 1; i
< GraphTraceLen
; ++i
) {
164 /* Transitions are detected at each peak
165 * Transitions are either:
166 * - we're low: transition if we hit a high
167 * - we're high: transition if we hit a low
168 * (we need to do it this way because some tags keep high or
169 * low for long periods, others just reach the peak and go
172 //[marhsmellow] change == to >= for high and <= for low for fuzz
173 if ((GraphBuffer
[i
] == high
) && (GraphBuffer
[i
- 1] == c
)) {
174 GraphBuffer
[i
] = 1 - c
;
175 } else if ((GraphBuffer
[i
] == low
) && (GraphBuffer
[i
- 1] == (1 - c
))){
179 GraphBuffer
[i
] = GraphBuffer
[i
- 1];
182 RepaintGraphWindow();
187 void printBitStream(uint8_t BitStream
[], uint32_t bitLen
)
191 PrintAndLog("Too few bits found: %d",bitLen
);
194 if (bitLen
>512) bitLen
=512;
196 // ensure equally divided by 16
200 for (i
= 0; i
<= (bitLen
-16); i
+=16) {
201 PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
222 //print EM410x ID in multiple formats
223 void printEM410x(uint64_t id
)
230 for (ii
=5; ii
>0;ii
--){
232 id2lo
=(id2lo
<<1LL) | ((id
& (iii
<< (i
+((ii
-1)*8)))) >> (i
+((ii
-1)*8)));
236 PrintAndLog("EM TAG ID : %010llx", id
);
237 PrintAndLog("Unique TAG ID: %010llx", id2lo
);
238 PrintAndLog("DEZ 8 : %08lld",id
& 0xFFFFFF);
239 PrintAndLog("DEZ 10 : %010lld",id
& 0xFFFFFF);
240 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id
>>16LL) & 0xFFFF,(id
& 0xFFFF));
241 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id
>>32ll),(id
& 0xFFFF));
242 PrintAndLog("DEZ 14/IK2 : %014lld",id
);
243 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo
);
244 PrintAndLog("Other : %05lld_%03lld_%08lld",(id
&0xFFFF),((id
>>16LL) & 0xFF),(id
& 0xFFFFFF));
250 //takes 3 arguments - clock, invert and maxErr as integers
251 //attempts to demodulate ask while decoding manchester
252 //prints binary found and saves in graphbuffer for further commands
253 int CmdAskEM410xDemod(const char *Cmd
)
258 char cmdp
= param_getchar(Cmd
, 0);
259 if (strlen(Cmd
) > 10 || cmdp
== 'h' || cmdp
== 'H') {
260 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
261 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
262 PrintAndLog(" <invert>, 1 for invert output");
263 PrintAndLog(" [set maximum allowed errors], default = 100.");
265 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
266 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
267 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
268 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
269 PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
275 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
276 sscanf(Cmd
, "%i %i %i", &clk
, &invert
, &maxErr
);
277 if (invert
!= 0 && invert
!= 1) {
278 PrintAndLog("Invalid argument: %s", Cmd
);
281 size_t BitLen
= getFromGraphBuf(BitStream
);
283 if (g_debugMode
==1) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen
);
284 if (BitLen
==0) return 0;
286 errCnt
= askmandemod(BitStream
, &BitLen
, &clk
, &invert
, maxErr
);
287 if (errCnt
<0||BitLen
<16){ //if fatal error (or -1)
288 if (g_debugMode
==1) PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt
,invert
,BitLen
,clk
);
291 PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk
,invert
,BitLen
);
295 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt
);
297 //PrintAndLog("ASK/Manchester decoded bitstream:");
298 // Now output the bitstream to the scrollback by line of 16 bits
299 setDemodBuf(BitStream
,BitLen
,0);
303 lo
= Em410xDecode(BitStream
, &BitLen
, &idx
);
305 //set GraphBuffer for clone or sim command
306 setDemodBuf(BitStream
, BitLen
, idx
);
308 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx
, BitLen
);
311 PrintAndLog("EM410x pattern found: ");
319 //takes 3 arguments - clock, invert, maxErr as integers
320 //attempts to demodulate ask while decoding manchester
321 //prints binary found and saves in graphbuffer for further commands
322 int Cmdaskmandemod(const char *Cmd
)
327 char cmdp
= param_getchar(Cmd
, 0);
328 if (strlen(Cmd
) > 10 || cmdp
== 'h' || cmdp
== 'H') {
329 PrintAndLog("Usage: data askmandemod [clock] <0|1> [maxError]");
330 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
331 PrintAndLog(" <invert>, 1 for invert output");
332 PrintAndLog(" [set maximum allowed errors], default = 100.");
334 PrintAndLog(" sample: data askmandemod = demod an ask/manchester tag from GraphBuffer");
335 PrintAndLog(" : data askmandemod 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
336 PrintAndLog(" : data askmandemod 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
337 PrintAndLog(" : data askmandemod 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
338 PrintAndLog(" : data askmandemod 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
342 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
343 sscanf(Cmd
, "%i %i %i", &clk
, &invert
, &maxErr
);
344 if (invert
!= 0 && invert
!= 1) {
345 PrintAndLog("Invalid argument: %s", Cmd
);
352 size_t BitLen
= getFromGraphBuf(BitStream
);
353 if (g_debugMode
==1) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen
);
354 if (BitLen
==0) return 0;
356 errCnt
= askmandemod(BitStream
, &BitLen
, &clk
, &invert
, maxErr
);
357 if (errCnt
<0||BitLen
<16){ //if fatal error (or -1)
358 if (g_debugMode
==1) PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt
,invert
,BitLen
,clk
);
361 PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk
,invert
,BitLen
);
365 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt
);
367 PrintAndLog("ASK/Manchester decoded bitstream:");
368 // Now output the bitstream to the scrollback by line of 16 bits
369 setDemodBuf(BitStream
,BitLen
,0);
373 lo
= Em410xDecode(BitStream
, &BitLen
, &idx
);
375 //set GraphBuffer for clone or sim command
376 setDemodBuf(BitStream
, BitLen
, idx
);
378 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx
, BitLen
);
381 PrintAndLog("EM410x pattern found: ");
390 //stricktly take 10 and 01 and convert to 0 and 1
391 int Cmdmandecoderaw(const char *Cmd
)
397 char cmdp
= param_getchar(Cmd
, 0);
398 if (strlen(Cmd
) > 1 || cmdp
== 'h' || cmdp
== 'H') {
399 PrintAndLog("Usage: data manrawdecode");
400 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
401 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
403 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
406 if (DemodBufferLen
==0) return 0;
407 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
409 for (;i
<DemodBufferLen
;++i
){
410 if (DemodBuffer
[i
]>high
) high
=DemodBuffer
[i
];
411 else if(DemodBuffer
[i
]<low
) low
=DemodBuffer
[i
];
412 BitStream
[i
]=DemodBuffer
[i
];
414 if (high
>1 || low
<0 ){
415 PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode");
419 errCnt
=manrawdecode(BitStream
, &size
);
421 PrintAndLog("Too many errors: %d",errCnt
);
424 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt
);
425 printBitStream(BitStream
, size
);
429 id
= Em410xDecode(BitStream
, &size
, &idx
);
431 //need to adjust to set bitstream back to manchester encoded data
432 //setDemodBuf(BitStream, size, idx);
442 //take 01 or 10 = 0 and 11 or 00 = 1
443 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
444 // and "invert" default = 0 if 1 it will invert output
445 // since it is not like manchester and doesn't have an incorrect bit pattern we
446 // cannot determine if our decode is correct or if it should be shifted by one bit
447 // the argument offset allows us to manually shift if the output is incorrect
448 // (better would be to demod and decode at the same time so we can distinguish large
449 // width waves vs small width waves to help the decode positioning) or askbiphdemod
450 int CmdBiphaseDecodeRaw(const char *Cmd
)
458 char cmdp
= param_getchar(Cmd
, 0);
459 if (strlen(Cmd
) > 3 || cmdp
== 'h' || cmdp
== 'H') {
460 PrintAndLog("Usage: data biphaserawdecode [offset] <invert>");
461 PrintAndLog(" Converts 10 or 01 to 0 and 11 or 00 to 1");
462 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
464 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
465 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
467 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
468 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
471 sscanf(Cmd
, "%i %i", &offset
, &invert
);
472 if (DemodBufferLen
==0) return 0;
473 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
474 //get graphbuffer & high and low
475 for (;i
<DemodBufferLen
;++i
){
476 if(DemodBuffer
[i
]>high
)high
=DemodBuffer
[i
];
477 else if(DemodBuffer
[i
]<low
)low
=DemodBuffer
[i
];
478 BitStream
[i
]=DemodBuffer
[i
];
480 if (high
>1 || low
<0){
481 PrintAndLog("Error: please raw demod the wave first then decode");
485 errCnt
=BiphaseRawDecode(BitStream
, &size
, offset
, invert
);
487 PrintAndLog("Too many errors attempting to decode: %d",errCnt
);
490 PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset
,errCnt
);
491 printBitStream(BitStream
, size
);
492 PrintAndLog("\nif bitstream does not look right try offset=1");
497 //takes 4 arguments - clock, invert, maxErr as integers and amplify as char
498 //attempts to demodulate ask only
499 //prints binary found and saves in graphbuffer for further commands
500 int Cmdaskrawdemod(const char *Cmd
)
506 char amp
= param_getchar(Cmd
, 0);
507 char cmdp
= param_getchar(Cmd
, 0);
508 if (strlen(Cmd
) > 12 || cmdp
== 'h' || cmdp
== 'H') {
509 PrintAndLog("Usage: data askrawdemod [clock] <invert> [maxError] [amplify]");
510 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
511 PrintAndLog(" <invert>, 1 to invert output");
512 PrintAndLog(" [set maximum allowed errors], default = 100");
513 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
515 PrintAndLog(" sample: data askrawdemod = demod an ask tag from GraphBuffer");
516 PrintAndLog(" : data askrawdemod a = demod an ask tag from GraphBuffer, amplified");
517 PrintAndLog(" : data askrawdemod 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
518 PrintAndLog(" : data askrawdemod 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
519 PrintAndLog(" : data askrawdemod 1 = demod an ask tag from GraphBuffer while inverting data");
520 PrintAndLog(" : data askrawdemod 64 1 0 = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
521 PrintAndLog(" : data askrawdemod 64 1 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
524 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
525 sscanf(Cmd
, "%i %i %i %c", &clk
, &invert
, &maxErr
, &
);
526 if (invert
!= 0 && invert
!= 1) {
527 PrintAndLog("Invalid argument: %s", Cmd
);
534 if (amp
== 'a' || amp
== 'A') askAmp
=1;
535 size_t BitLen
= getFromGraphBuf(BitStream
);
536 if (BitLen
==0) return 0;
538 errCnt
= askrawdemod(BitStream
, &BitLen
, &clk
, &invert
, maxErr
, askAmp
);
539 if (errCnt
==-1||BitLen
<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
540 PrintAndLog("no data found");
541 if (g_debugMode
==1) PrintAndLog("errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt
, BitLen
, clk
, invert
);
544 PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d", clk
, invert
, BitLen
);
546 //move BitStream back to DemodBuffer
547 setDemodBuf(BitStream
,BitLen
,0);
551 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d", errCnt
);
553 PrintAndLog("ASK demoded bitstream:");
554 // Now output the bitstream to the scrollback by line of 16 bits
555 printBitStream(BitStream
,BitLen
);
560 int CmdAutoCorr(const char *Cmd
)
562 static int CorrelBuffer
[MAX_GRAPH_TRACE_LEN
];
564 int window
= atoi(Cmd
);
567 PrintAndLog("needs a window");
570 if (window
>= GraphTraceLen
) {
571 PrintAndLog("window must be smaller than trace (%d samples)",
576 PrintAndLog("performing %d correlations", GraphTraceLen
- window
);
578 for (int i
= 0; i
< GraphTraceLen
- window
; ++i
) {
580 for (int j
= 0; j
< window
; ++j
) {
581 sum
+= (GraphBuffer
[j
]*GraphBuffer
[i
+ j
]) / 256;
583 CorrelBuffer
[i
] = sum
;
585 GraphTraceLen
= GraphTraceLen
- window
;
586 memcpy(GraphBuffer
, CorrelBuffer
, GraphTraceLen
* sizeof (int));
588 RepaintGraphWindow();
592 int CmdBitsamples(const char *Cmd
)
597 GetFromBigBuf(got
,sizeof(got
),0);
598 WaitForResponse(CMD_ACK
,NULL
);
600 for (int j
= 0; j
< sizeof(got
); j
++) {
601 for (int k
= 0; k
< 8; k
++) {
602 if(got
[j
] & (1 << (7 - k
))) {
603 GraphBuffer
[cnt
++] = 1;
605 GraphBuffer
[cnt
++] = 0;
610 RepaintGraphWindow();
615 * Convert to a bitstream
617 int CmdBitstream(const char *Cmd
)
625 int hithigh
, hitlow
, first
;
627 /* Detect high and lows and clock */
628 for (i
= 0; i
< GraphTraceLen
; ++i
)
630 if (GraphBuffer
[i
] > high
)
631 high
= GraphBuffer
[i
];
632 else if (GraphBuffer
[i
] < low
)
633 low
= GraphBuffer
[i
];
637 clock
= GetClock(Cmd
, high
, 1);
641 for (i
= 0; i
< (int)(gtl
/ clock
); ++i
)
646 /* Find out if we hit both high and low peaks */
647 for (j
= 0; j
< clock
; ++j
)
649 if (GraphBuffer
[(i
* clock
) + j
] == high
)
651 else if (GraphBuffer
[(i
* clock
) + j
] == low
)
653 /* it doesn't count if it's the first part of our read
654 because it's really just trailing from the last sequence */
655 if (first
&& (hithigh
|| hitlow
))
656 hithigh
= hitlow
= 0;
660 if (hithigh
&& hitlow
)
664 /* If we didn't hit both high and low peaks, we had a bit transition */
665 if (!hithigh
|| !hitlow
)
668 AppendGraph(0, clock
, bit
);
671 RepaintGraphWindow();
675 int CmdBuffClear(const char *Cmd
)
677 UsbCommand c
= {CMD_BUFF_CLEAR
};
683 int CmdDec(const char *Cmd
)
685 for (int i
= 0; i
< (GraphTraceLen
/ 2); ++i
)
686 GraphBuffer
[i
] = GraphBuffer
[i
* 2];
688 PrintAndLog("decimated by 2");
689 RepaintGraphWindow();
694 //shift graph zero up or down based on input + or -
695 int CmdGraphShiftZero(const char *Cmd
)
699 //set options from parameters entered with the command
700 sscanf(Cmd
, "%i", &shift
);
702 for(int i
= 0; i
<GraphTraceLen
; i
++){
703 shiftedVal
=GraphBuffer
[i
]+shift
;
706 else if (shiftedVal
<-127)
708 GraphBuffer
[i
]= shiftedVal
;
715 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
716 //similar to dirtheshold, threshold, and askdemod commands
717 //takes a threshold length which is the measured length between two samples then determines an edge
718 int CmdAskEdgeDetect(const char *Cmd
)
721 sscanf(Cmd
, "%i", &thresLen
);
724 for(int i
= 1; i
<GraphTraceLen
; i
++){
725 if (GraphBuffer
[i
]-GraphBuffer
[i
-1]>=thresLen
) //large jump up
727 else if(GraphBuffer
[i
]-GraphBuffer
[i
-1]<=-1*thresLen
) //large jump down
730 shiftedVal
=GraphBuffer
[i
]+shift
;
734 else if (shiftedVal
<-127)
736 GraphBuffer
[i
-1] = shiftedVal
;
738 RepaintGraphWindow();
743 /* Print our clock rate */
744 // uses data from graphbuffer
745 int CmdDetectClockRate(const char *Cmd
)
747 int ans
= GetClock("",0,0);
752 //fsk raw demod and print binary
753 //takes 4 arguments - Clock, invert, fchigh, fclow
754 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
755 int CmdFSKrawdemod(const char *Cmd
)
757 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
763 char cmdp
= param_getchar(Cmd
, 0);
764 if (strlen(Cmd
) > 10 || cmdp
== 'h' || cmdp
== 'H') {
765 PrintAndLog("Usage: data fskrawdemod [clock] <invert> [fchigh] [fclow]");
766 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
767 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
768 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
769 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
771 PrintAndLog(" sample: data fskrawdemod = demod an fsk tag from GraphBuffer using autodetect");
772 PrintAndLog(" : data fskrawdemod 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
773 PrintAndLog(" : data fskrawdemod 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
774 PrintAndLog(" : data fskrawdemod 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
775 PrintAndLog(" : data fskrawdemod 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
776 PrintAndLog(" : data fskrawdemod 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
777 PrintAndLog(" : data fskrawdemod 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
780 //set options from parameters entered with the command
781 sscanf(Cmd
, "%i %i %i %i", &rfLen
, &invert
, &fchigh
, &fclow
);
783 if (strlen(Cmd
)>0 && strlen(Cmd
)<=2) {
785 invert
=1; //if invert option only is used
790 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
791 size_t BitLen
= getFromGraphBuf(BitStream
);
792 if (BitLen
==0) return 0;
793 //get field clock lengths
796 if (fchigh
==0 || fclow
== 0){
797 fcs
=countFC(BitStream
, BitLen
, &dummy
);
802 fchigh
= (fcs
>> 8) & 0xFF;
806 //get bit clock length
808 rfLen
= detectFSKClk(BitStream
, BitLen
, fchigh
, fclow
);
809 if (rfLen
== 0) rfLen
= 50;
811 PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert
,rfLen
,fchigh
, fclow
);
812 int size
= fskdemod(BitStream
,BitLen
,(uint8_t)rfLen
,(uint8_t)invert
,(uint8_t)fchigh
,(uint8_t)fclow
);
814 PrintAndLog("FSK decoded bitstream:");
815 setDemodBuf(BitStream
,size
,0);
817 // Now output the bitstream to the scrollback by line of 16 bits
818 if(size
> (8*32)+2) size
= (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size
819 printBitStream(BitStream
,size
);
822 PrintAndLog("no FSK data found");
827 //by marshmellow (based on existing demod + holiman's refactor)
828 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
829 //print full HID Prox ID and some bit format details if found
830 int CmdFSKdemodHID(const char *Cmd
)
832 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
833 uint32_t hi2
=0, hi
=0, lo
=0;
835 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
836 size_t BitLen
= getFromGraphBuf(BitStream
);
837 if (BitLen
==0) return 0;
838 //get binary from fsk wave
839 int idx
= HIDdemodFSK(BitStream
,&BitLen
,&hi2
,&hi
,&lo
);
843 PrintAndLog("DEBUG: Just Noise Detected");
844 } else if (idx
== -2) {
845 PrintAndLog("DEBUG: Error demoding fsk");
846 } else if (idx
== -3) {
847 PrintAndLog("DEBUG: Preamble not found");
848 } else if (idx
== -4) {
849 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen
);
851 PrintAndLog("DEBUG: Error demoding fsk %d", idx
);
856 if (hi2
==0 && hi
==0 && lo
==0) {
857 if (g_debugMode
) PrintAndLog("DEBUG: Error - no values found");
860 if (hi2
!= 0){ //extra large HID tags
861 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
862 (unsigned int) hi2
, (unsigned int) hi
, (unsigned int) lo
, (unsigned int) (lo
>>1) & 0xFFFF);
864 else { //standard HID tags <38 bits
867 uint32_t cardnum
= 0;
868 if (((hi
>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
870 lo2
=(((hi
& 31) << 12) | (lo
>>20)); //get bits 21-37 to check for format len bit
872 while(lo2
>1){ //find last bit set to 1 (format len bit)
880 cardnum
= (lo
>>1)&0xFFFF;
884 cardnum
= (lo
>>1)&0xFFFF;
885 fc
= ((hi
&1)<<15)|(lo
>>17);
888 cardnum
= (lo
>>1)&0xFFFFF;
889 fc
= ((hi
&1)<<11)|(lo
>>21);
892 else { //if bit 38 is not set then 37 bit format is used
897 cardnum
= (lo
>>1)&0x7FFFF;
898 fc
= ((hi
&0xF)<<12)|(lo
>>20);
901 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
902 (unsigned int) hi
, (unsigned int) lo
, (unsigned int) (lo
>>1) & 0xFFFF,
903 (unsigned int) fmtLen
, (unsigned int) fc
, (unsigned int) cardnum
);
905 setDemodBuf(BitStream
,BitLen
,idx
);
907 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx
, BitLen
);
914 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
915 //print full Paradox Prox ID and some bit format details if found
916 int CmdFSKdemodParadox(const char *Cmd
)
918 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
919 uint32_t hi2
=0, hi
=0, lo
=0;
921 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
922 size_t BitLen
= getFromGraphBuf(BitStream
);
923 if (BitLen
==0) return 0;
924 //get binary from fsk wave
925 int idx
= ParadoxdemodFSK(BitStream
,&BitLen
,&hi2
,&hi
,&lo
);
929 PrintAndLog("DEBUG: Just Noise Detected");
930 } else if (idx
== -2) {
931 PrintAndLog("DEBUG: Error demoding fsk");
932 } else if (idx
== -3) {
933 PrintAndLog("DEBUG: Preamble not found");
934 } else if (idx
== -4) {
935 PrintAndLog("DEBUG: Error in Manchester data");
937 PrintAndLog("DEBUG: Error demoding fsk %d", idx
);
942 if (hi2
==0 && hi
==0 && lo
==0){
943 if (g_debugMode
) PrintAndLog("DEBUG: Error - no value found");
946 uint32_t fc
= ((hi
& 0x3)<<6) | (lo
>>26);
947 uint32_t cardnum
= (lo
>>10)&0xFFFF;
949 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x",
950 hi
>>10, (hi
& 0x3)<<26 | (lo
>>10), fc
, cardnum
, (lo
>>2) & 0xFF );
951 setDemodBuf(BitStream
,BitLen
,idx
);
953 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx
, BitLen
);
961 //IO-Prox demod - FSK RF/64 with preamble of 000000001
962 //print ioprox ID and some format details
963 int CmdFSKdemodIO(const char *Cmd
)
965 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
968 //something in graphbuffer?
969 if (GraphTraceLen
< 65) {
970 if (g_debugMode
)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
973 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
974 size_t BitLen
= getFromGraphBuf(BitStream
);
975 if (BitLen
==0) return 0;
977 //get binary from fsk wave
978 idx
= IOdemodFSK(BitStream
,BitLen
);
982 PrintAndLog("DEBUG: Just Noise Detected");
983 } else if (idx
== -2) {
984 PrintAndLog("DEBUG: not enough samples");
985 } else if (idx
== -3) {
986 PrintAndLog("DEBUG: error during fskdemod");
987 } else if (idx
== -4) {
988 PrintAndLog("DEBUG: Preamble not found");
989 } else if (idx
== -5) {
990 PrintAndLog("DEBUG: Separator bits not found");
992 PrintAndLog("DEBUG: Error demoding fsk %d", idx
);
999 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen
);
1000 if (BitLen
> 92) printBitStream(BitStream
,92);
1005 //0 10 20 30 40 50 60
1007 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1008 //-----------------------------------------------------------------------------
1009 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1011 //XSF(version)facility:codeone+codetwo (raw)
1013 if (idx
+64>BitLen
) {
1014 if (g_debugMode
==1) PrintAndLog("not enough bits found - bitlen: %d",BitLen
);
1017 PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream
[idx
], BitStream
[idx
+1], BitStream
[idx
+2], BitStream
[idx
+3], BitStream
[idx
+4], BitStream
[idx
+5], BitStream
[idx
+6], BitStream
[idx
+7], BitStream
[idx
+8]);
1018 PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream
[idx
+9], BitStream
[idx
+10], BitStream
[idx
+11],BitStream
[idx
+12],BitStream
[idx
+13],BitStream
[idx
+14],BitStream
[idx
+15],BitStream
[idx
+16],BitStream
[idx
+17]);
1019 PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream
[idx
+18], BitStream
[idx
+19], BitStream
[idx
+20],BitStream
[idx
+21],BitStream
[idx
+22],BitStream
[idx
+23],BitStream
[idx
+24],BitStream
[idx
+25],BitStream
[idx
+26]);
1020 PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream
[idx
+27], BitStream
[idx
+28], BitStream
[idx
+29],BitStream
[idx
+30],BitStream
[idx
+31],BitStream
[idx
+32],BitStream
[idx
+33],BitStream
[idx
+34],BitStream
[idx
+35]);
1021 PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream
[idx
+36], BitStream
[idx
+37], BitStream
[idx
+38],BitStream
[idx
+39],BitStream
[idx
+40],BitStream
[idx
+41],BitStream
[idx
+42],BitStream
[idx
+43],BitStream
[idx
+44]);
1022 PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream
[idx
+45], BitStream
[idx
+46], BitStream
[idx
+47],BitStream
[idx
+48],BitStream
[idx
+49],BitStream
[idx
+50],BitStream
[idx
+51],BitStream
[idx
+52],BitStream
[idx
+53]);
1023 PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream
[idx
+54],BitStream
[idx
+55],BitStream
[idx
+56],BitStream
[idx
+57],BitStream
[idx
+58],BitStream
[idx
+59],BitStream
[idx
+60],BitStream
[idx
+61],BitStream
[idx
+62],BitStream
[idx
+63]);
1025 uint32_t code
= bytebits_to_byte(BitStream
+idx
,32);
1026 uint32_t code2
= bytebits_to_byte(BitStream
+idx
+32,32);
1027 uint8_t version
= bytebits_to_byte(BitStream
+idx
+27,8); //14,4
1028 uint8_t facilitycode
= bytebits_to_byte(BitStream
+idx
+18,8) ;
1029 uint16_t number
= (bytebits_to_byte(BitStream
+idx
+36,8)<<8)|(bytebits_to_byte(BitStream
+idx
+45,8)); //36,9
1030 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version
,facilitycode
,number
,code
,code2
);
1031 setDemodBuf(BitStream
,64,idx
);
1033 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx
,64);
1041 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1042 //print full AWID Prox ID and some bit format details if found
1043 int CmdFSKdemodAWID(const char *Cmd
)
1047 //sscanf(Cmd, "%i", &verbose);
1049 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1050 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
1051 size_t size
= getFromGraphBuf(BitStream
);
1052 if (size
==0) return 0;
1054 //get binary from fsk wave
1055 int idx
= AWIDdemodFSK(BitStream
, &size
);
1057 if (g_debugMode
==1){
1059 PrintAndLog("DEBUG: Error - not enough samples");
1061 PrintAndLog("DEBUG: Error - only noise found");
1063 PrintAndLog("DEBUG: Error - problem during FSK demod");
1064 // else if (idx == -3)
1065 // PrintAndLog("Error: thought we had a tag but the parity failed");
1067 PrintAndLog("DEBUG: Error - AWID preamble not found");
1069 PrintAndLog("DEBUG: Error - Size not correct: %d", size
);
1071 PrintAndLog("DEBUG: Error %d",idx
);
1077 // 0 10 20 30 40 50 60
1079 // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
1080 // -----------------------------------------------------------------------------
1081 // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
1082 // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
1083 // |---26 bit---| |-----117----||-------------142-------------|
1084 // b = format bit len, o = odd parity of last 3 bits
1085 // f = facility code, c = card number
1086 // w = wiegand parity
1087 // (26 bit format shown)
1089 //get raw ID before removing parities
1090 uint32_t rawLo
= bytebits_to_byte(BitStream
+idx
+64,32);
1091 uint32_t rawHi
= bytebits_to_byte(BitStream
+idx
+32,32);
1092 uint32_t rawHi2
= bytebits_to_byte(BitStream
+idx
,32);
1093 setDemodBuf(BitStream
,96,idx
);
1095 size
= removeParity(BitStream
, idx
+8, 4, 1, 88);
1097 if (g_debugMode
==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
1100 // ok valid card found!
1103 // 0 10 20 30 40 50 60
1105 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1106 // -----------------------------------------------------------------------------
1107 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1108 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1109 // |26 bit| |-117--| |-----142------|
1110 // b = format bit len, o = odd parity of last 3 bits
1111 // f = facility code, c = card number
1112 // w = wiegand parity
1113 // (26 bit format shown)
1116 uint32_t cardnum
= 0;
1119 uint8_t fmtLen
= bytebits_to_byte(BitStream
,8);
1121 fc
= bytebits_to_byte(BitStream
+9, 8);
1122 cardnum
= bytebits_to_byte(BitStream
+17, 16);
1123 code1
= bytebits_to_byte(BitStream
+8,fmtLen
);
1124 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %x%08x%08x", fmtLen
, fc
, cardnum
, code1
, rawHi2
, rawHi
, rawLo
);
1126 cardnum
= bytebits_to_byte(BitStream
+8+(fmtLen
-17), 16);
1128 code1
= bytebits_to_byte(BitStream
+8,fmtLen
-32);
1129 code2
= bytebits_to_byte(BitStream
+8+(fmtLen
-32),32);
1130 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %x%08x%08x", fmtLen
, cardnum
, code1
, code2
, rawHi2
, rawHi
, rawLo
);
1132 code1
= bytebits_to_byte(BitStream
+8,fmtLen
);
1133 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %x%08x%08x", fmtLen
, cardnum
, code1
, rawHi2
, rawHi
, rawLo
);
1137 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx
, 96);
1140 //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
1145 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1146 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1147 int CmdFSKdemodPyramid(const char *Cmd
)
1149 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1150 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
1151 size_t size
= getFromGraphBuf(BitStream
);
1152 if (size
==0) return 0;
1154 //get binary from fsk wave
1155 int idx
= PyramiddemodFSK(BitStream
, &size
);
1157 if (g_debugMode
==1){
1159 PrintAndLog("DEBUG: Error - not enough samples");
1161 PrintAndLog("DEBUG: Error - only noise found");
1163 PrintAndLog("DEBUG: Error - problem during FSK demod");
1165 PrintAndLog("DEBUG: Error - Size not correct: %d", size
);
1167 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1169 PrintAndLog("DEBUG: Error - idx: %d",idx
);
1174 // 0 10 20 30 40 50 60
1176 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1177 // -----------------------------------------------------------------------------
1178 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1179 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1181 // 64 70 80 90 100 110 120
1183 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1184 // -----------------------------------------------------------------------------
1185 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1186 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1187 // |---115---||---------71---------|
1188 // s = format start bit, o = odd parity of last 7 bits
1189 // f = facility code, c = card number
1190 // w = wiegand parity, x = extra space for other formats
1191 // p = unknown checksum
1192 // (26 bit format shown)
1194 //get raw ID before removing parities
1195 uint32_t rawLo
= bytebits_to_byte(BitStream
+idx
+96,32);
1196 uint32_t rawHi
= bytebits_to_byte(BitStream
+idx
+64,32);
1197 uint32_t rawHi2
= bytebits_to_byte(BitStream
+idx
+32,32);
1198 uint32_t rawHi3
= bytebits_to_byte(BitStream
+idx
,32);
1199 setDemodBuf(BitStream
,128,idx
);
1201 size
= removeParity(BitStream
, idx
+8, 8, 1, 120);
1203 if (g_debugMode
==1) PrintAndLog("DEBUG: Error at parity check-tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size
, idx
, rawHi3
);
1207 // ok valid card found!
1210 // 0 10 20 30 40 50 60 70
1212 // 01234567890123456789012345678901234567890123456789012345678901234567890
1213 // -----------------------------------------------------------------------
1214 // 00000000000000000000000000000000000000000000000000000000000000000000000
1215 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1219 // 1 2 34567890 1234567890123456 7 8901234
1220 // ---------------------------------------
1221 // 1 1 01110011 0000000001000110 0 1001010
1222 // s w ffffffff cccccccccccccccc w ppppppp
1223 // |--115-| |------71------|
1224 // s = format start bit, o = odd parity of last 7 bits
1225 // f = facility code, c = card number
1226 // w = wiegand parity, x = extra space for other formats
1227 // p = unknown checksum
1228 // (26 bit format shown)
1230 //find start bit to get fmtLen
1232 for (j
=0; j
<size
; j
++){
1233 if(BitStream
[j
]) break;
1235 uint8_t fmtLen
= size
-j
-8;
1237 uint32_t cardnum
= 0;
1239 //uint32_t code2 = 0;
1241 fc
= bytebits_to_byte(BitStream
+73, 8);
1242 cardnum
= bytebits_to_byte(BitStream
+81, 16);
1243 code1
= bytebits_to_byte(BitStream
+72,fmtLen
);
1244 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %x%08x%08x%08x", fmtLen
, fc
, cardnum
, code1
, rawHi3
, rawHi2
, rawHi
, rawLo
);
1245 } else if (fmtLen
==45){
1246 fmtLen
=42; //end = 10 bits not 7 like 26 bit fmt
1247 fc
= bytebits_to_byte(BitStream
+53, 10);
1248 cardnum
= bytebits_to_byte(BitStream
+63, 32);
1249 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %x%08x%08x%08x", fmtLen
, fc
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
1251 cardnum
= bytebits_to_byte(BitStream
+81, 16);
1253 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
1254 //code2 = bytebits_to_byte(BitStream+(size-32),32);
1255 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
1257 //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
1258 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen
, cardnum
, rawHi3
, rawHi2
, rawHi
, rawLo
);
1262 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx
, 128);
1268 int CmdFSKdemod(const char *Cmd
) //old CmdFSKdemod needs updating
1270 static const int LowTone
[] = {
1271 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1272 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1273 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1274 1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
1275 1, 1, 1, 1, 1, -1, -1, -1, -1, -1
1277 static const int HighTone
[] = {
1278 1, 1, 1, 1, 1, -1, -1, -1, -1,
1279 1, 1, 1, 1, -1, -1, -1, -1,
1280 1, 1, 1, 1, -1, -1, -1, -1,
1281 1, 1, 1, 1, -1, -1, -1, -1,
1282 1, 1, 1, 1, -1, -1, -1, -1,
1283 1, 1, 1, 1, -1, -1, -1, -1, -1,
1286 int lowLen
= sizeof (LowTone
) / sizeof (int);
1287 int highLen
= sizeof (HighTone
) / sizeof (int);
1288 int convLen
= (highLen
> lowLen
) ? highLen
: lowLen
;
1289 uint32_t hi
= 0, lo
= 0;
1292 int minMark
= 0, maxMark
= 0;
1294 for (i
= 0; i
< GraphTraceLen
- convLen
; ++i
) {
1295 int lowSum
= 0, highSum
= 0;
1297 for (j
= 0; j
< lowLen
; ++j
) {
1298 lowSum
+= LowTone
[j
]*GraphBuffer
[i
+j
];
1300 for (j
= 0; j
< highLen
; ++j
) {
1301 highSum
+= HighTone
[j
] * GraphBuffer
[i
+ j
];
1303 lowSum
= abs(100 * lowSum
/ lowLen
);
1304 highSum
= abs(100 * highSum
/ highLen
);
1305 GraphBuffer
[i
] = (highSum
<< 16) | lowSum
;
1308 for(i
= 0; i
< GraphTraceLen
- convLen
- 16; ++i
) {
1309 int lowTot
= 0, highTot
= 0;
1310 // 10 and 8 are f_s divided by f_l and f_h, rounded
1311 for (j
= 0; j
< 10; ++j
) {
1312 lowTot
+= (GraphBuffer
[i
+j
] & 0xffff);
1314 for (j
= 0; j
< 8; j
++) {
1315 highTot
+= (GraphBuffer
[i
+ j
] >> 16);
1317 GraphBuffer
[i
] = lowTot
- highTot
;
1318 if (GraphBuffer
[i
] > maxMark
) maxMark
= GraphBuffer
[i
];
1319 if (GraphBuffer
[i
] < minMark
) minMark
= GraphBuffer
[i
];
1322 GraphTraceLen
-= (convLen
+ 16);
1323 RepaintGraphWindow();
1325 // Find bit-sync (3 lo followed by 3 high) (HID ONLY)
1326 int max
= 0, maxPos
= 0;
1327 for (i
= 0; i
< 6000; ++i
) {
1329 for (j
= 0; j
< 3 * lowLen
; ++j
) {
1330 dec
-= GraphBuffer
[i
+ j
];
1332 for (; j
< 3 * (lowLen
+ highLen
); ++j
) {
1333 dec
+= GraphBuffer
[i
+ j
];
1341 // place start of bit sync marker in graph
1342 GraphBuffer
[maxPos
] = maxMark
;
1343 GraphBuffer
[maxPos
+ 1] = minMark
;
1347 // place end of bit sync marker in graph
1348 GraphBuffer
[maxPos
] = maxMark
;
1349 GraphBuffer
[maxPos
+1] = minMark
;
1351 PrintAndLog("actual data bits start at sample %d", maxPos
);
1352 PrintAndLog("length %d/%d", highLen
, lowLen
);
1354 uint8_t bits
[46] = {0x00};
1356 // find bit pairs and manchester decode them
1357 for (i
= 0; i
< arraylen(bits
) - 1; ++i
) {
1359 for (j
= 0; j
< lowLen
; ++j
) {
1360 dec
-= GraphBuffer
[maxPos
+ j
];
1362 for (; j
< lowLen
+ highLen
; ++j
) {
1363 dec
+= GraphBuffer
[maxPos
+ j
];
1366 // place inter bit marker in graph
1367 GraphBuffer
[maxPos
] = maxMark
;
1368 GraphBuffer
[maxPos
+ 1] = minMark
;
1370 // hi and lo form a 64 bit pair
1371 hi
= (hi
<< 1) | (lo
>> 31);
1373 // store decoded bit as binary (in hi/lo) and text (in bits[])
1381 PrintAndLog("bits: '%s'", bits
);
1382 PrintAndLog("hex: %08x %08x", hi
, lo
);
1387 //attempt to detect the field clock and bit clock for FSK
1388 int CmdFSKfcDetect(const char *Cmd
)
1390 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
1391 size_t size
= getFromGraphBuf(BitStream
);
1392 if (size
==0) return 0;
1394 uint16_t ans
= countFC(BitStream
, size
, &dummy
);
1396 if (g_debugMode
) PrintAndLog("DEBUG: No data found");
1400 fc1
= (ans
>> 8) & 0xFF;
1403 uint8_t rf1
= detectFSKClk(BitStream
, size
, fc1
, fc2
);
1405 if (g_debugMode
) PrintAndLog("DEBUG: Clock detect error");
1408 if ((fc1
==10 && fc2
==8) || (fc1
==8 && fc2
==5)){
1409 PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1
, fc2
, rf1
);
1413 PrintAndLog("DEBUG: unknown fsk field clock detected");
1414 PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1
, fc2
, rf1
);
1420 //attempt to detect the bit clock for PSK modulations
1421 int CmdDetectPSKClockRate(const char *Cmd
)
1423 GetPskClock("",0,0);
1428 //attempt to detect the bit clock for NRZ modulations
1429 int CmdDetectNRZClockRate(const char *Cmd
)
1431 GetNrzClock("",0,0);
1436 //attempt to psk1 demod graph buffer
1437 int PSKDemod(const char *Cmd
, uint8_t verbose
)
1442 sscanf(Cmd
, "%i %i %i", &clk
, &invert
, &maxErr
);
1447 if (invert
!= 0 && invert
!= 1) {
1448 PrintAndLog("Invalid argument: %s", Cmd
);
1451 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
1452 size_t BitLen
= getFromGraphBuf(BitStream
);
1453 if (BitLen
==0) return 0;
1455 errCnt
= pskRawDemod(BitStream
, &BitLen
,&clk
,&invert
);
1456 if (errCnt
> maxErr
){
1457 if (g_debugMode
==1) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk
,invert
,BitLen
,errCnt
);
1460 if (errCnt
<0|| BitLen
<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1461 if (g_debugMode
==1) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk
,invert
,BitLen
,errCnt
);
1464 if (verbose
) PrintAndLog("Tried PSK Demod using Clock: %d - invert: %d - Bits Found: %d",clk
,invert
,BitLen
);
1465 //prime demod buffer for output
1466 setDemodBuf(BitStream
,BitLen
,0);
1471 // Indala 26 bit decode
1473 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1474 int CmdIndalaDecode(const char *Cmd
)
1478 ans
= PSKDemod(Cmd
, 0);
1479 } else{ //default to RF/32
1480 ans
= PSKDemod("32", 0);
1485 PrintAndLog("Error1: %d",ans
);
1489 ans
= indala26decode(DemodBuffer
,(size_t *) &DemodBufferLen
, &invert
);
1492 PrintAndLog("Error2: %d",ans
);
1495 char showbits
[251]={0x00};
1498 PrintAndLog("Had to invert bits");
1500 //convert UID to HEX
1501 uint32_t uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
;
1505 PrintAndLog("BitLen: %d",DemodBufferLen
);
1506 if (DemodBufferLen
==64){
1507 for( idx
=0; idx
<64; idx
++) {
1508 uid1
=(uid1
<<1)|(uid2
>>31);
1509 if (DemodBuffer
[idx
] == 0) {
1518 PrintAndLog("Indala UID=%s (%x%08x)", showbits
, uid1
, uid2
);
1526 for( idx
=0; idx
<DemodBufferLen
; idx
++) {
1527 uid1
=(uid1
<<1)|(uid2
>>31);
1528 uid2
=(uid2
<<1)|(uid3
>>31);
1529 uid3
=(uid3
<<1)|(uid4
>>31);
1530 uid4
=(uid4
<<1)|(uid5
>>31);
1531 uid5
=(uid5
<<1)|(uid6
>>31);
1532 uid6
=(uid6
<<1)|(uid7
>>31);
1533 if (DemodBuffer
[idx
] == 0) {
1543 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits
, uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
);
1546 PrintAndLog("DEBUG: printing demodbuffer:");
1554 //attempt to clean psk wave noise after a peak
1555 //NOTE RELIES ON PEAKS :(
1556 int CmdPskClean(const char *Cmd)
1558 uint8_t bitStream[MAX_GRAPH_TRACE_LEN]={0};
1559 size_t bitLen = getFromGraphBuf(bitStream);
1560 pskCleanWave(bitStream, bitLen);
1561 setGraphBuf(bitStream, bitLen);
1567 // takes 3 arguments - clock, invert, maxErr as integers
1568 // attempts to demodulate nrz only
1569 // prints binary found and saves in demodbuffer for further commands
1570 int CmdNRZrawDemod(const char *Cmd
)
1575 char cmdp
= param_getchar(Cmd
, 0);
1576 if (strlen(Cmd
) > 10 || cmdp
== 'h' || cmdp
== 'H') {
1577 PrintAndLog("Usage: data nrzrawdemod [clock] <0|1> [maxError]");
1578 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1579 PrintAndLog(" <invert>, 1 for invert output");
1580 PrintAndLog(" [set maximum allowed errors], default = 100.");
1582 PrintAndLog(" sample: data nrzrawdemod = demod a nrz/direct tag from GraphBuffer");
1583 PrintAndLog(" : data nrzrawdemod 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
1584 PrintAndLog(" : data nrzrawdemod 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
1585 PrintAndLog(" : data nrzrawdemod 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
1586 PrintAndLog(" : data nrzrawdemod 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1591 sscanf(Cmd
, "%i %i %i", &clk
, &invert
, &maxErr
);
1596 if (invert
!= 0 && invert
!= 1) {
1597 PrintAndLog("Invalid argument: %s", Cmd
);
1600 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
]={0};
1601 size_t BitLen
= getFromGraphBuf(BitStream
);
1602 if (BitLen
==0) return 0;
1604 errCnt
= nrzRawDemod(BitStream
, &BitLen
, &clk
, &invert
, maxErr
);
1605 if (errCnt
> maxErr
){
1606 if (g_debugMode
==1) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk
,invert
,BitLen
,errCnt
);
1609 if (errCnt
<0|| BitLen
<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1610 if (g_debugMode
==1) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk
,invert
,BitLen
,errCnt
);
1613 PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk
,invert
,BitLen
);
1614 //prime demod buffer for output
1615 setDemodBuf(BitStream
,BitLen
,0);
1618 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt
);
1621 PrintAndLog("NRZ demoded bitstream:");
1622 // Now output the bitstream to the scrollback by line of 16 bits
1628 // takes 3 arguments - clock, invert, maxErr as integers
1629 // attempts to demodulate psk only
1630 // prints binary found and saves in demodbuffer for further commands
1631 int CmdPSK1rawDemod(const char *Cmd
)
1634 char cmdp
= param_getchar(Cmd
, 0);
1635 if (strlen(Cmd
) > 10 || cmdp
== 'h' || cmdp
== 'H') {
1636 PrintAndLog("Usage: data psk1rawdemod [clock] <0|1> [maxError]");
1637 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1638 PrintAndLog(" <invert>, 1 for invert output");
1639 PrintAndLog(" [set maximum allowed errors], default = 100.");
1641 PrintAndLog(" sample: data psk1rawdemod = demod a psk1 tag from GraphBuffer");
1642 PrintAndLog(" : data psk1rawdemod 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
1643 PrintAndLog(" : data psk1rawdemod 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
1644 PrintAndLog(" : data psk1rawdemod 1 = demod a psk1 tag from GraphBuffer while inverting data");
1645 PrintAndLog(" : data psk1rawdemod 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
1648 errCnt
= PSKDemod(Cmd
, 1);
1651 if (g_debugMode
) PrintAndLog("Error demoding: %d",errCnt
);
1655 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt
);
1658 PrintAndLog("PSK demoded bitstream:");
1659 // Now output the bitstream to the scrollback by line of 16 bits
1665 // takes same args as cmdpsknrzrawdemod
1666 int CmdPSK2rawDemod(const char *Cmd
)
1669 char cmdp
= param_getchar(Cmd
, 0);
1670 if (strlen(Cmd
) > 10 || cmdp
== 'h' || cmdp
== 'H') {
1671 PrintAndLog("Usage: data psk2rawdemod [clock] <0|1> [maxError]");
1672 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
1673 PrintAndLog(" <invert>, 1 for invert output");
1674 PrintAndLog(" [set maximum allowed errors], default = 100.");
1676 PrintAndLog(" sample: data psk2rawdemod = demod a psk2 tag from GraphBuffer, autodetect clock");
1677 PrintAndLog(" : data psk2rawdemod 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
1678 PrintAndLog(" : data psk2rawdemod 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
1679 PrintAndLog(" : data psk2rawdemod 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
1680 PrintAndLog(" : data psk2rawdemod 64 1 0 = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
1683 errCnt
=PSKDemod(Cmd
, 1);
1685 if (g_debugMode
) PrintAndLog("Error demoding: %d",errCnt
);
1688 psk1TOpsk2(DemodBuffer
, DemodBufferLen
);
1691 PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt
);
1692 PrintAndLog("PSK2 demoded bitstream:");
1693 // Now output the bitstream to the scrollback by line of 16 bits
1697 PrintAndLog("PSK2 demoded bitstream:");
1698 // Now output the bitstream to the scrollback by line of 16 bits
1704 int CmdGrid(const char *Cmd
)
1706 sscanf(Cmd
, "%i %i", &PlotGridX
, &PlotGridY
);
1707 PlotGridXdefault
= PlotGridX
;
1708 PlotGridYdefault
= PlotGridY
;
1709 RepaintGraphWindow();
1713 int CmdHexsamples(const char *Cmd
)
1718 char string_buf
[25];
1719 char* string_ptr
= string_buf
;
1720 uint8_t got
[BIGBUF_SIZE
];
1722 sscanf(Cmd
, "%i %i", &requested
, &offset
);
1724 /* if no args send something */
1725 if (requested
== 0) {
1728 if (offset
+ requested
> sizeof(got
)) {
1729 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE
);
1733 GetFromBigBuf(got
,requested
,offset
);
1734 WaitForResponse(CMD_ACK
,NULL
);
1737 for (j
= 0; j
< requested
; j
++) {
1739 string_ptr
+= sprintf(string_ptr
, "%02x ", got
[j
]);
1741 *(string_ptr
- 1) = '\0'; // remove the trailing space
1742 PrintAndLog("%s", string_buf
);
1743 string_buf
[0] = '\0';
1744 string_ptr
= string_buf
;
1747 if (j
== requested
- 1 && string_buf
[0] != '\0') { // print any remaining bytes
1748 *(string_ptr
- 1) = '\0';
1749 PrintAndLog("%s", string_buf
);
1750 string_buf
[0] = '\0';
1756 int CmdHide(const char *Cmd
)
1762 int CmdHpf(const char *Cmd
)
1767 for (i
= 10; i
< GraphTraceLen
; ++i
)
1768 accum
+= GraphBuffer
[i
];
1769 accum
/= (GraphTraceLen
- 10);
1770 for (i
= 0; i
< GraphTraceLen
; ++i
)
1771 GraphBuffer
[i
] -= accum
;
1773 RepaintGraphWindow();
1777 int CmdSamples(const char *Cmd
)
1779 uint8_t got
[BIGBUF_SIZE
] = {0x00};
1781 int n
= strtol(Cmd
, NULL
, 0);
1785 if (n
> sizeof(got
))
1788 PrintAndLog("Reading %d samples from device memory\n", n
);
1789 GetFromBigBuf(got
,n
,0);
1790 WaitForResponse(CMD_ACK
,NULL
);
1791 for (int j
= 0; j
< n
; j
++) {
1792 GraphBuffer
[j
] = ((int)got
[j
]) - 128;
1795 RepaintGraphWindow();
1799 int CmdTuneSamples(const char *Cmd
)
1802 printf("\nMeasuring antenna characteristics, please wait...");
1804 UsbCommand c
= {CMD_MEASURE_ANTENNA_TUNING
};
1808 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING
,&resp
,1000)) {
1812 PrintAndLog("\nNo response from Proxmark. Aborting...");
1818 int vLf125
, vLf134
, vHf
;
1819 vLf125
= resp
.arg
[0] & 0xffff;
1820 vLf134
= resp
.arg
[0] >> 16;
1821 vHf
= resp
.arg
[1] & 0xffff;;
1822 peakf
= resp
.arg
[2] & 0xffff;
1823 peakv
= resp
.arg
[2] >> 16;
1825 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125
/1000.0);
1826 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134
/1000.0);
1827 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv
/1000.0, 12000.0/(peakf
+1));
1828 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf
/1000.0);
1830 PrintAndLog("# Your LF antenna is unusable.");
1831 else if (peakv
<10000)
1832 PrintAndLog("# Your LF antenna is marginal.");
1834 PrintAndLog("# Your HF antenna is unusable.");
1836 PrintAndLog("# Your HF antenna is marginal.");
1838 for (int i
= 0; i
< 256; i
++) {
1839 GraphBuffer
[i
] = resp
.d
.asBytes
[i
] - 128;
1842 PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n");
1844 GraphTraceLen
= 256;
1851 int CmdLoad(const char *Cmd
)
1853 char filename
[FILE_PATH_SIZE
] = {0x00};
1857 if (len
> FILE_PATH_SIZE
) len
= FILE_PATH_SIZE
;
1858 memcpy(filename
, Cmd
, len
);
1860 FILE *f
= fopen(filename
, "r");
1862 PrintAndLog("couldn't open '%s'", filename
);
1868 while (fgets(line
, sizeof (line
), f
)) {
1869 GraphBuffer
[GraphTraceLen
] = atoi(line
);
1873 PrintAndLog("loaded %d samples", GraphTraceLen
);
1874 RepaintGraphWindow();
1878 int CmdLtrim(const char *Cmd
)
1882 for (int i
= ds
; i
< GraphTraceLen
; ++i
)
1883 GraphBuffer
[i
-ds
] = GraphBuffer
[i
];
1884 GraphTraceLen
-= ds
;
1886 RepaintGraphWindow();
1890 // trim graph to input argument length
1891 int CmdRtrim(const char *Cmd
)
1897 RepaintGraphWindow();
1902 * Manchester demodulate a bitstream. The bitstream needs to be already in
1903 * the GraphBuffer as 0 and 1 values
1905 * Give the clock rate as argument in order to help the sync - the algorithm
1906 * resyncs at each pulse anyway.
1908 * Not optimized by any means, this is the 1st time I'm writing this type of
1909 * routine, feel free to improve...
1911 * 1st argument: clock rate (as number of samples per clock rate)
1912 * Typical values can be 64, 32, 128...
1914 int CmdManchesterDemod(const char *Cmd
)
1916 int i
, j
, invert
= 0;
1922 int hithigh
, hitlow
, first
;
1928 /* check if we're inverting output */
1931 PrintAndLog("Inverting output");
1936 while(*Cmd
== ' '); // in case a 2nd argument was given
1939 /* Holds the decoded bitstream: each clock period contains 2 bits */
1940 /* later simplified to 1 bit after manchester decoding. */
1941 /* Add 10 bits to allow for noisy / uncertain traces without aborting */
1942 /* int BitStream[GraphTraceLen*2/clock+10]; */
1944 /* But it does not work if compiling on WIndows: therefore we just allocate a */
1946 uint8_t BitStream
[MAX_GRAPH_TRACE_LEN
] = {0};
1948 /* Detect high and lows */
1949 for (i
= 0; i
< GraphTraceLen
; i
++)
1951 if (GraphBuffer
[i
] > high
)
1952 high
= GraphBuffer
[i
];
1953 else if (GraphBuffer
[i
] < low
)
1954 low
= GraphBuffer
[i
];
1958 clock
= GetClock(Cmd
, high
, 1);
1960 int tolerance
= clock
/4;
1962 /* Detect first transition */
1963 /* Lo-Hi (arbitrary) */
1964 /* skip to the first high */
1965 for (i
= 0; i
< GraphTraceLen
; i
++)
1966 if (GraphBuffer
[i
] == high
)
1968 /* now look for the first low */
1969 for (; i
< GraphTraceLen
; i
++)
1971 if (GraphBuffer
[i
] == low
)
1978 /* If we're not working with 1/0s, demod based off clock */
1981 bit
= 0; /* We assume the 1st bit is zero, it may not be
1982 * the case: this routine (I think) has an init problem.
1985 for (; i
< (int)(GraphTraceLen
/ clock
); i
++)
1991 /* Find out if we hit both high and low peaks */
1992 for (j
= 0; j
< clock
; j
++)
1994 if (GraphBuffer
[(i
* clock
) + j
] == high
)
1996 else if (GraphBuffer
[(i
* clock
) + j
] == low
)
1999 /* it doesn't count if it's the first part of our read
2000 because it's really just trailing from the last sequence */
2001 if (first
&& (hithigh
|| hitlow
))
2002 hithigh
= hitlow
= 0;
2006 if (hithigh
&& hitlow
)
2010 /* If we didn't hit both high and low peaks, we had a bit transition */
2011 if (!hithigh
|| !hitlow
)
2014 BitStream
[bit2idx
++] = bit
^ invert
;
2018 /* standard 1/0 bitstream */
2022 /* Then detect duration between 2 successive transitions */
2023 for (bitidx
= 1; i
< GraphTraceLen
; i
++)
2025 if (GraphBuffer
[i
-1] != GraphBuffer
[i
])
2030 // Error check: if bitidx becomes too large, we do not
2031 // have a Manchester encoded bitstream or the clock is really
2033 if (bitidx
> (GraphTraceLen
*2/clock
+8) ) {
2034 PrintAndLog("Error: the clock you gave is probably wrong, aborting.");
2037 // Then switch depending on lc length:
2038 // Tolerance is 1/4 of clock rate (arbitrary)
2039 if (abs(lc
-clock
/2) < tolerance
) {
2040 // Short pulse : either "1" or "0"
2041 BitStream
[bitidx
++]=GraphBuffer
[i
-1];
2042 } else if (abs(lc
-clock
) < tolerance
) {
2043 // Long pulse: either "11" or "00"
2044 BitStream
[bitidx
++]=GraphBuffer
[i
-1];
2045 BitStream
[bitidx
++]=GraphBuffer
[i
-1];
2049 PrintAndLog("Warning: Manchester decode error for pulse width detection.");
2050 PrintAndLog("(too many of those messages mean either the stream is not Manchester encoded, or clock is wrong)");
2054 PrintAndLog("Error: too many detection errors, aborting.");
2061 // At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream
2062 // Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful
2063 // to stop output at the final bitidx2 value, not bitidx
2064 for (i
= 0; i
< bitidx
; i
+= 2) {
2065 if ((BitStream
[i
] == 0) && (BitStream
[i
+1] == 1)) {
2066 BitStream
[bit2idx
++] = 1 ^ invert
;
2067 } else if ((BitStream
[i
] == 1) && (BitStream
[i
+1] == 0)) {
2068 BitStream
[bit2idx
++] = 0 ^ invert
;
2070 // We cannot end up in this state, this means we are unsynchronized,
2074 PrintAndLog("Unsynchronized, resync...");
2075 PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)");
2079 PrintAndLog("Error: too many decode errors, aborting.");
2086 PrintAndLog("Manchester decoded bitstream");
2087 // Now output the bitstream to the scrollback by line of 16 bits
2088 for (i
= 0; i
< (bit2idx
-16); i
+=16) {
2089 PrintAndLog("%i %i %i %i %i %i %i %i %i %i %i %i %i %i %i %i",
2110 /* Modulate our data into manchester */
2111 int CmdManchesterMod(const char *Cmd
)
2115 int bit
, lastbit
, wave
;
2118 clock
= GetClock(Cmd
, 0, 1);
2122 for (i
= 0; i
< (int)(GraphTraceLen
/ clock
); i
++)
2124 bit
= GraphBuffer
[i
* clock
] ^ 1;
2126 for (j
= 0; j
< (int)(clock
/2); j
++)
2127 GraphBuffer
[(i
* clock
) + j
] = bit
^ lastbit
^ wave
;
2128 for (j
= (int)(clock
/2); j
< clock
; j
++)
2129 GraphBuffer
[(i
* clock
) + j
] = bit
^ lastbit
^ wave
^ 1;
2131 /* Keep track of how we start our wave and if we changed or not this time */
2132 wave
^= bit
^ lastbit
;
2136 RepaintGraphWindow();
2140 int CmdNorm(const char *Cmd
)
2143 int max
= INT_MIN
, min
= INT_MAX
;
2145 for (i
= 10; i
< GraphTraceLen
; ++i
) {
2146 if (GraphBuffer
[i
] > max
)
2147 max
= GraphBuffer
[i
];
2148 if (GraphBuffer
[i
] < min
)
2149 min
= GraphBuffer
[i
];
2153 for (i
= 0; i
< GraphTraceLen
; ++i
) {
2154 GraphBuffer
[i
] = (GraphBuffer
[i
] - ((max
+ min
) / 2)) * 256 /
2156 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2159 RepaintGraphWindow();
2163 int CmdPlot(const char *Cmd
)
2169 int CmdSave(const char *Cmd
)
2171 char filename
[FILE_PATH_SIZE
] = {0x00};
2175 if (len
> FILE_PATH_SIZE
) len
= FILE_PATH_SIZE
;
2176 memcpy(filename
, Cmd
, len
);
2179 FILE *f
= fopen(filename
, "w");
2181 PrintAndLog("couldn't open '%s'", filename
);
2185 for (i
= 0; i
< GraphTraceLen
; i
++) {
2186 fprintf(f
, "%d\n", GraphBuffer
[i
]);
2189 PrintAndLog("saved to '%s'", Cmd
);
2193 int CmdScale(const char *Cmd
)
2195 CursorScaleFactor
= atoi(Cmd
);
2196 if (CursorScaleFactor
== 0) {
2197 PrintAndLog("bad, can't have zero scale");
2198 CursorScaleFactor
= 1;
2200 RepaintGraphWindow();
2204 int CmdThreshold(const char *Cmd
)
2206 int threshold
= atoi(Cmd
);
2208 for (int i
= 0; i
< GraphTraceLen
; ++i
) {
2209 if (GraphBuffer
[i
] >= threshold
)
2212 GraphBuffer
[i
] = -1;
2214 RepaintGraphWindow();
2218 int CmdDirectionalThreshold(const char *Cmd
)
2220 int8_t upThres
= param_get8(Cmd
, 0);
2221 int8_t downThres
= param_get8(Cmd
, 1);
2223 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres
, downThres
);
2225 int lastValue
= GraphBuffer
[0];
2226 GraphBuffer
[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2228 for (int i
= 1; i
< GraphTraceLen
; ++i
) {
2229 // Apply first threshold to samples heading up
2230 if (GraphBuffer
[i
] >= upThres
&& GraphBuffer
[i
] > lastValue
)
2232 lastValue
= GraphBuffer
[i
]; // Buffer last value as we overwrite it.
2235 // Apply second threshold to samples heading down
2236 else if (GraphBuffer
[i
] <= downThres
&& GraphBuffer
[i
] < lastValue
)
2238 lastValue
= GraphBuffer
[i
]; // Buffer last value as we overwrite it.
2239 GraphBuffer
[i
] = -1;
2243 lastValue
= GraphBuffer
[i
]; // Buffer last value as we overwrite it.
2244 GraphBuffer
[i
] = GraphBuffer
[i
-1];
2248 GraphBuffer
[0] = GraphBuffer
[1]; // Aline with first edited sample.
2249 RepaintGraphWindow();
2253 int CmdZerocrossings(const char *Cmd
)
2255 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2262 for (int i
= 0; i
< GraphTraceLen
; ++i
) {
2263 if (GraphBuffer
[i
] * sign
>= 0) {
2264 // No change in sign, reproduce the previous sample count.
2266 GraphBuffer
[i
] = lastZc
;
2268 // Change in sign, reset the sample count.
2270 GraphBuffer
[i
] = lastZc
;
2278 RepaintGraphWindow();
2282 static command_t CommandTable
[] =
2284 {"help", CmdHelp
, 1, "This help"},
2285 {"amp", CmdAmp
, 1, "Amplify peaks"},
2286 {"askdemod", Cmdaskdemod
, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"},
2287 {"askedgedetect", CmdAskEdgeDetect
, 1, "[threshold] Adjust Graph for manual ask demod using length of sample differences to detect the edge of a wave - default = 25"},
2288 {"askem410xdemod",CmdAskEM410xDemod
, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional)"},
2289 {"askmandemod", Cmdaskmandemod
, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional)"},
2290 {"askrawdemod", Cmdaskrawdemod
, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK tags and output bin (args optional)"},
2291 {"autocorr", CmdAutoCorr
, 1, "<window length> -- Autocorrelation over window"},
2292 {"biphaserawdecode",CmdBiphaseDecodeRaw
,1,"[offset] [invert<0|1>] Biphase decode bin stream in demod buffer (offset = 0|1 bits to shift the decode start)"},
2293 {"bitsamples", CmdBitsamples
, 0, "Get raw samples as bitstring"},
2294 {"bitstream", CmdBitstream
, 1, "[clock rate] -- Convert waveform into a bitstream"},
2295 {"buffclear", CmdBuffClear
, 1, "Clear sample buffer and graph window"},
2296 {"dec", CmdDec
, 1, "Decimate samples"},
2297 {"detectclock", CmdDetectClockRate
, 1, "Detect ASK clock rate"},
2298 {"fskdemod", CmdFSKdemod
, 1, "Demodulate graph window as a HID FSK"},
2299 {"fskawiddemod", CmdFSKdemodAWID
, 1, "Demodulate graph window as an AWID FSK tag using raw"},
2300 {"fskfcdetect", CmdFSKfcDetect
, 1, "Try to detect the Field Clock of an FSK wave"},
2301 {"fskhiddemod", CmdFSKdemodHID
, 1, "Demodulate graph window as a HID FSK tag using raw"},
2302 {"fskiodemod", CmdFSKdemodIO
, 1, "Demodulate graph window as an IO Prox tag FSK using raw"},
2303 {"fskpyramiddemod",CmdFSKdemodPyramid
,1, "Demodulate graph window as a Pyramid FSK tag using raw"},
2304 {"fskparadoxdemod",CmdFSKdemodParadox
,1, "Demodulate graph window as a Paradox FSK tag using raw"},
2305 {"fskrawdemod", CmdFSKrawdemod
, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to bin (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"},
2306 {"grid", CmdGrid
, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2307 {"hexsamples", CmdHexsamples
, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2308 {"hide", CmdHide
, 1, "Hide graph window"},
2309 {"hpf", CmdHpf
, 1, "Remove DC offset from trace"},
2310 {"load", CmdLoad
, 1, "<filename> -- Load trace (to graph window"},
2311 {"ltrim", CmdLtrim
, 1, "<samples> -- Trim samples from left of trace"},
2312 {"rtrim", CmdRtrim
, 1, "<location to end trace> -- Trim samples from right of trace"},
2313 {"mandemod", CmdManchesterDemod
, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"},
2314 {"manrawdecode", Cmdmandecoderaw
, 1, "Manchester decode binary stream already in graph buffer"},
2315 {"manmod", CmdManchesterMod
, 1, "[clock rate] -- Manchester modulate a binary stream"},
2316 {"norm", CmdNorm
, 1, "Normalize max/min to +/-128"},
2317 {"nrzdetectclock",CmdDetectNRZClockRate
, 1, "Detect ASK, PSK, or NRZ clock rate"},
2318 {"nrzrawdemod", CmdNRZrawDemod
, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate nrz tags and output binary (args optional)"},
2319 {"plot", CmdPlot
, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2320 {"pskdetectclock",CmdDetectPSKClockRate
, 1, "Detect ASK, PSK, or NRZ clock rate"},
2321 {"pskindalademod",CmdIndalaDecode
, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk1 indala tags and output ID binary & hex (args optional)"},
2322 {"psk1rawdemod", CmdPSK1rawDemod
, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk1 tags and output binary (args optional)"},
2323 {"psk2rawdemod", CmdPSK2rawDemod
, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk2 tags and output binary (args optional)"},
2324 {"samples", CmdSamples
, 0, "[512 - 40000] -- Get raw samples for graph window"},
2325 {"save", CmdSave
, 1, "<filename> -- Save trace (from graph window)"},
2326 {"scale", CmdScale
, 1, "<int> -- Set cursor display scale"},
2327 {"setdebugmode", CmdSetDebugMode
, 1, "<0|1> -- Turn on or off Debugging Mode for demods"},
2328 {"shiftgraphzero",CmdGraphShiftZero
, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2329 {"threshold", CmdThreshold
, 1, "<threshold> -- Maximize/minimize every value in the graph window depending on threshold"},
2330 {"dirthreshold", CmdDirectionalThreshold
, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2331 {"tune", CmdTuneSamples
, 0, "Get hw tune samples for graph window"},
2332 {"zerocrossings", CmdZerocrossings
, 1, "Count time between zero-crossings"},
2333 {NULL
, NULL
, 0, NULL
}
2336 int CmdData(const char *Cmd
)
2338 CmdsParse(CommandTable
, Cmd
);
2342 int CmdHelp(const char *Cmd
)
2344 CmdsHelp(CommandTable
);