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 // Low frequency commands
9 //-----------------------------------------------------------------------------
15 #include "proxmark3.h"
19 #include "cmdparser.h"
25 #include "cmdlfawid.h"
27 #include "cmdlfem4x.h"
28 #include "cmdlfhitag.h"
29 #include "cmdlft55xx.h"
30 #include "cmdlfpcf7931.h"
34 static int CmdHelp(const char *Cmd
);
36 /* send a command before reading */
37 int CmdLFCommandRead(const char *Cmd
)
43 UsbCommand c
= {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K
};
44 sscanf(Cmd
, "%"lli
" %"lli
" %"lli
" %s %s", &c
.arg
[0], &c
.arg
[1], &c
.arg
[2],(char*)(&c
.d
.asBytes
),(char*)(&dummy
+1));
45 // in case they specified 'h'
46 strcpy((char *)&c
.d
.asBytes
+ strlen((char *)c
.d
.asBytes
), dummy
);
51 int CmdFlexdemod(const char *Cmd
)
54 for (i
= 0; i
< GraphTraceLen
; ++i
) {
55 if (GraphBuffer
[i
] < 0) {
64 for (start
= 0; start
< GraphTraceLen
- LONG_WAIT
; start
++) {
65 int first
= GraphBuffer
[start
];
66 for (i
= start
; i
< start
+ LONG_WAIT
; i
++) {
67 if (GraphBuffer
[i
] != first
) {
71 if (i
== (start
+ LONG_WAIT
)) {
75 if (start
== GraphTraceLen
- LONG_WAIT
) {
76 PrintAndLog("nothing to wait for");
80 GraphBuffer
[start
] = 2;
81 GraphBuffer
[start
+1] = -2;
82 uint8_t bits
[64] = {0x00};
86 for (bit
= 0; bit
< 64; bit
++) {
88 for (int j
= 0; j
< 16; j
++) {
89 sum
+= GraphBuffer
[i
++];
92 bits
[bit
] = (sum
> 0) ? 1 : 0;
94 PrintAndLog("bit %d sum %d", bit
, sum
);
97 for (bit
= 0; bit
< 64; bit
++) {
100 for (j
= 0; j
< 16; j
++) {
101 sum
+= GraphBuffer
[i
++];
103 if (sum
> 0 && bits
[bit
] != 1) {
104 PrintAndLog("oops1 at %d", bit
);
106 if (sum
< 0 && bits
[bit
] != 0) {
107 PrintAndLog("oops2 at %d", bit
);
111 // HACK writing back to graphbuffer.
112 GraphTraceLen
= 32*64;
115 for (bit
= 0; bit
< 64; bit
++) {
117 phase
= (bits
[bit
] == 0) ? 0 : 1;
120 for (j
= 0; j
< 32; j
++) {
121 GraphBuffer
[i
++] = phase
;
126 RepaintGraphWindow();
130 int CmdIndalaDemod(const char *Cmd
)
132 // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
138 // worst case with GraphTraceLen=64000 is < 4096
139 // under normal conditions it's < 2048
141 uint8_t rawbits
[4096];
143 int worst
= 0, worstPos
= 0;
144 // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
145 for (i
= 0; i
< GraphTraceLen
-1; i
+= 2) {
147 if ((GraphBuffer
[i
] > GraphBuffer
[i
+ 1]) && (state
!= 1)) {
149 for (j
= 0; j
< count
- 8; j
+= 16) {
150 rawbits
[rawbit
++] = 0;
152 if ((abs(count
- j
)) > worst
) {
153 worst
= abs(count
- j
);
159 } else if ((GraphBuffer
[i
] < GraphBuffer
[i
+ 1]) && (state
!= 0)) {
161 for (j
= 0; j
< count
- 8; j
+= 16) {
162 rawbits
[rawbit
++] = 1;
164 if ((abs(count
- j
)) > worst
) {
165 worst
= abs(count
- j
);
175 PrintAndLog("Recovered %d raw bits, expected: %d", rawbit
, GraphTraceLen
/32);
176 PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst
, worstPos
);
181 // Finding the start of a UID
182 int uidlen
, long_wait
;
183 if (strcmp(Cmd
, "224") == 0) {
193 for (start
= 0; start
<= rawbit
- uidlen
; start
++) {
194 first
= rawbits
[start
];
195 for (i
= start
; i
< start
+ long_wait
; i
++) {
196 if (rawbits
[i
] != first
) {
200 if (i
== (start
+ long_wait
)) {
205 if (start
== rawbit
- uidlen
+ 1) {
206 PrintAndLog("nothing to wait for");
210 // Inverting signal if needed
212 for (i
= start
; i
< rawbit
; i
++) {
213 rawbits
[i
] = !rawbits
[i
];
218 uint8_t bits
[224] = {0x00};
219 char showbits
[225] = {0x00};
224 if (uidlen
> rawbit
) {
225 PrintAndLog("Warning: not enough raw bits to get a full UID");
226 for (bit
= 0; bit
< rawbit
; bit
++) {
227 bits
[bit
] = rawbits
[i
++];
228 // As we cannot know the parity, let's use "." and "/"
229 showbits
[bit
] = '.' + bits
[bit
];
231 showbits
[bit
+1]='\0';
232 PrintAndLog("Partial UID=%s", showbits
);
235 for (bit
= 0; bit
< uidlen
; bit
++) {
236 bits
[bit
] = rawbits
[i
++];
237 showbits
[bit
] = '0' + bits
[bit
];
243 uint32_t uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
;
248 for( idx
=0; idx
<64; idx
++) {
249 if (showbits
[idx
] == '0') {
250 uid1
=(uid1
<<1)|(uid2
>>31);
253 uid1
=(uid1
<<1)|(uid2
>>31);
257 PrintAndLog("UID=%s (%x%08x)", showbits
, uid1
, uid2
);
260 uid3
= uid4
= uid5
= uid6
= uid7
= 0;
262 for( idx
=0; idx
<224; idx
++) {
263 uid1
=(uid1
<<1)|(uid2
>>31);
264 uid2
=(uid2
<<1)|(uid3
>>31);
265 uid3
=(uid3
<<1)|(uid4
>>31);
266 uid4
=(uid4
<<1)|(uid5
>>31);
267 uid5
=(uid5
<<1)|(uid6
>>31);
268 uid6
=(uid6
<<1)|(uid7
>>31);
270 if (showbits
[idx
] == '0')
271 uid7
= (uid7
<<1) | 0;
273 uid7
= (uid7
<<1) | 1;
275 PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits
, uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
);
278 // Checking UID against next occurrences
280 for (; i
+ uidlen
<= rawbit
;) {
282 for (bit
= 0; bit
< uidlen
; bit
++) {
283 if (bits
[bit
] != rawbits
[i
++]) {
294 PrintAndLog("Occurrences: %d (expected %d)", times
, (rawbit
- start
) / uidlen
);
296 // Remodulating for tag cloning
297 // HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod)
298 // since this changes graphbuffer data.
299 GraphTraceLen
= 32*uidlen
;
302 for (bit
= 0; bit
< uidlen
; bit
++) {
303 if (bits
[bit
] == 0) {
309 for (j
= 0; j
< 32; j
++) {
310 GraphBuffer
[i
++] = phase
;
315 RepaintGraphWindow();
319 int CmdIndalaClone(const char *Cmd
)
322 unsigned int uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
;
324 uid1
= uid2
= uid3
= uid4
= uid5
= uid6
= uid7
= 0;
327 if (strchr(Cmd
,'l') != 0) {
328 while (sscanf(&Cmd
[i
++], "%1x", &n
) == 1) {
329 uid1
= (uid1
<< 4) | (uid2
>> 28);
330 uid2
= (uid2
<< 4) | (uid3
>> 28);
331 uid3
= (uid3
<< 4) | (uid4
>> 28);
332 uid4
= (uid4
<< 4) | (uid5
>> 28);
333 uid5
= (uid5
<< 4) | (uid6
>> 28);
334 uid6
= (uid6
<< 4) | (uid7
>> 28);
335 uid7
= (uid7
<< 4) | (n
& 0xf);
337 PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
);
338 c
.cmd
= CMD_INDALA_CLONE_TAG_L
;
339 c
.d
.asDwords
[0] = uid1
;
340 c
.d
.asDwords
[1] = uid2
;
341 c
.d
.asDwords
[2] = uid3
;
342 c
.d
.asDwords
[3] = uid4
;
343 c
.d
.asDwords
[4] = uid5
;
344 c
.d
.asDwords
[5] = uid6
;
345 c
.d
.asDwords
[6] = uid7
;
347 while (sscanf(&Cmd
[i
++], "%1x", &n
) == 1) {
348 uid1
= (uid1
<< 4) | (uid2
>> 28);
349 uid2
= (uid2
<< 4) | (n
& 0xf);
351 PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1
, uid2
);
352 c
.cmd
= CMD_INDALA_CLONE_TAG
;
363 PrintAndLog("Usage: lf read");
364 PrintAndLog("Options: ");
365 PrintAndLog(" h This help");
366 PrintAndLog(" s silent run no printout");
367 PrintAndLog("This function takes no arguments. ");
368 PrintAndLog("Use 'lf config' to set parameters.");
373 PrintAndLog("Usage: lf snoop");
374 PrintAndLog("Options: ");
375 PrintAndLog(" h This help");
376 PrintAndLog("This function takes no arguments. ");
377 PrintAndLog("Use 'lf config' to set parameters.");
381 int usage_lf_config()
383 PrintAndLog("Usage: lf config [H|<divisor>] [b <bps>] [d <decim>] [a 0|1]");
384 PrintAndLog("Options: ");
385 PrintAndLog(" h This help");
386 PrintAndLog(" L Low frequency (125 KHz)");
387 PrintAndLog(" H High frequency (134 KHz)");
388 PrintAndLog(" q <divisor> Manually set divisor. 88-> 134KHz, 95-> 125 Hz");
389 PrintAndLog(" b <bps> Sets resolution of bits per sample. Default (max): 8");
390 PrintAndLog(" d <decim> Sets decimation. A value of N saves only 1 in N samples. Default: 1");
391 PrintAndLog(" a [0|1] Averaging - if set, will average the stored sample value when decimating. Default: 1");
392 PrintAndLog(" t <threshold> Sets trigger threshold. 0 means no threshold");
393 PrintAndLog("Examples:");
394 PrintAndLog(" lf config b 8 L");
395 PrintAndLog(" Samples at 125KHz, 8bps.");
396 PrintAndLog(" lf config H b 4 d 3");
397 PrintAndLog(" Samples at 134KHz, averages three samples into one, stored with ");
398 PrintAndLog(" a resolution of 4 bits per sample.");
399 PrintAndLog(" lf read");
400 PrintAndLog(" Performs a read (active field)");
401 PrintAndLog(" lf snoop");
402 PrintAndLog(" Performs a snoop (no active field)");
406 int CmdLFSetConfig(const char *Cmd
)
409 uint8_t divisor
= 0;//Frequency divisor
410 uint8_t bps
= 0; // Bits per sample
411 uint8_t decimation
= 0; //How many to keep
412 bool averaging
= 1; // Defaults to true
414 int trigger_threshold
=-1;//Means no change
415 uint8_t unsigned_trigg
= 0;
418 while(param_getchar(Cmd
, cmdp
) != 0x00)
420 switch(param_getchar(Cmd
, cmdp
))
423 return usage_lf_config();
433 errors
|= param_getdec(Cmd
,cmdp
+1,&divisor
);
437 errors
|= param_getdec(Cmd
,cmdp
+1,&unsigned_trigg
);
439 if(!errors
) trigger_threshold
= unsigned_trigg
;
442 errors
|= param_getdec(Cmd
,cmdp
+1,&bps
);
446 errors
|= param_getdec(Cmd
,cmdp
+1,&decimation
);
450 averaging
= param_getchar(Cmd
,cmdp
+1) == '1';
454 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
462 errors
= 1;// No args
468 return usage_lf_config();
470 //Bps is limited to 8, so fits in lower half of arg1
471 if(bps
>> 8) bps
= 8;
473 sample_config config
= {
474 decimation
,bps
,averaging
,divisor
,trigger_threshold
476 //Averaging is a flag on high-bit of arg[1]
477 UsbCommand c
= {CMD_SET_LF_SAMPLING_CONFIG
};
478 memcpy(c
.d
.asBytes
,&config
,sizeof(sample_config
));
483 int CmdLFRead(const char *Cmd
)
488 if (param_getchar(Cmd
, cmdp
) == 'h')
490 return usage_lf_read();
492 if (param_getchar(Cmd
, cmdp
) == 's') arg1
= true; //suppress print
493 //And ship it to device
494 UsbCommand c
= {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K
, {arg1
,0,0}};
496 WaitForResponse(CMD_ACK
,NULL
);
500 int CmdLFSnoop(const char *Cmd
)
503 if(param_getchar(Cmd
, cmdp
) == 'h')
505 return usage_lf_snoop();
508 UsbCommand c
= {CMD_LF_SNOOP_RAW_ADC_SAMPLES
};
510 WaitForResponse(CMD_ACK
,NULL
);
514 static void ChkBitstream(const char *str
)
518 /* convert to bitstream if necessary */
519 for (i
= 0; i
< (int)(GraphTraceLen
/ 2); i
++){
520 if (GraphBuffer
[i
] > 1 || GraphBuffer
[i
] < 0) {
526 //Attempt to simulate any wave in buffer (one bit per output sample)
527 // converts GraphBuffer to bitstream (based on zero crossings) if needed.
528 int CmdLFSim(const char *Cmd
)
533 sscanf(Cmd
, "%i", &gap
);
535 // convert to bitstream if necessary
539 //can send only 512 bits at a time (1 byte sent per bit...)
540 printf("Sending [%d bytes]", GraphTraceLen
);
541 for (i
= 0; i
< GraphTraceLen
; i
+= USB_CMD_DATA_SIZE
) {
542 UsbCommand c
={CMD_DOWNLOADED_SIM_SAMPLES_125K
, {i
, 0, 0}};
544 for (j
= 0; j
< USB_CMD_DATA_SIZE
; j
++) {
545 c
.d
.asBytes
[j
] = GraphBuffer
[i
+j
];
548 WaitForResponse(CMD_ACK
,NULL
);
553 PrintAndLog("Starting to simulate");
554 UsbCommand c
= {CMD_SIMULATE_TAG_125K
, {GraphTraceLen
, gap
, 0}};
559 int usage_lf_simfsk(void)
562 PrintAndLog("Usage: lf simfsk [c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>]");
563 PrintAndLog("Options: ");
564 PrintAndLog(" h This help");
565 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
566 PrintAndLog(" i invert data");
567 PrintAndLog(" H <fcHigh> Manually set the larger Field Clock");
568 PrintAndLog(" L <fcLow> Manually set the smaller Field Clock");
569 //PrintAndLog(" s TBD- -to enable a gap between playback repetitions - default: no gap");
570 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
571 PrintAndLog("\n NOTE: if you set one clock manually set them all manually");
575 int usage_lf_simask(void)
578 PrintAndLog("Usage: lf simask [c <clock>] [i] [b|m|r] [s] [d <raw hex to sim>]");
579 PrintAndLog("Options: ");
580 PrintAndLog(" h This help");
581 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
582 PrintAndLog(" i invert data");
583 PrintAndLog(" b sim ask/biphase");
584 PrintAndLog(" m sim ask/manchester - Default");
585 PrintAndLog(" r sim ask/raw");
586 PrintAndLog(" s TBD- -to enable a gap between playback repetitions - default: no gap");
587 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
591 int usage_lf_simpsk(void)
594 PrintAndLog("Usage: lf simpsk [1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>]");
595 PrintAndLog("Options: ");
596 PrintAndLog(" h This help");
597 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
598 PrintAndLog(" i invert data");
599 PrintAndLog(" 1 set PSK1 (default)");
600 PrintAndLog(" 2 set PSK2");
601 PrintAndLog(" 3 set PSK3");
602 PrintAndLog(" r <carrier> 2|4|8 are valid carriers: default = 2");
603 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
607 // by marshmellow - sim ask data given clock, fcHigh, fcLow, invert
608 // - allow pull data from DemodBuffer
609 int CmdLFfskSim(const char *Cmd
)
611 //might be able to autodetect FCs and clock from Graphbuffer if using demod buffer
612 // otherwise will need FChigh, FClow, Clock, and bitstream
613 uint8_t fcHigh
=0, fcLow
=0, clk
=0;
616 char hexData
[32] = {0x00}; // store entered hex data
617 uint8_t data
[255] = {0x00};
620 while(param_getchar(Cmd
, cmdp
) != 0x00)
622 switch(param_getchar(Cmd
, cmdp
))
625 return usage_lf_simfsk();
631 errors
|= param_getdec(Cmd
,cmdp
+1,&clk
);
635 errors
|= param_getdec(Cmd
,cmdp
+1,&fcHigh
);
639 errors
|= param_getdec(Cmd
,cmdp
+1,&fcLow
);
647 dataLen
= param_getstr(Cmd
, cmdp
+1, hexData
);
651 dataLen
= hextobinarray((char *)data
, hexData
);
653 if (dataLen
==0) errors
=TRUE
;
654 if (errors
) PrintAndLog ("Error getting hex data");
658 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
664 if(cmdp
== 0 && DemodBufferLen
== 0)
666 errors
= TRUE
;// No args
672 return usage_lf_simfsk();
675 if (dataLen
== 0){ //using DemodBuffer
676 if (clk
==0 || fcHigh
==0 || fcLow
==0){ //manual settings must set them all
677 uint8_t ans
= fskClocks(&fcHigh
, &fcLow
, &clk
, 0);
679 if (!fcHigh
) fcHigh
=10;
685 setDemodBuf(data
, dataLen
, 0);
688 //default if not found
689 if (clk
== 0) clk
= 50;
690 if (fcHigh
== 0) fcHigh
= 10;
691 if (fcLow
== 0) fcLow
= 8;
694 arg1
= fcHigh
<< 8 | fcLow
;
695 arg2
= invert
<< 8 | clk
;
696 size_t size
= DemodBufferLen
;
697 if (size
> USB_CMD_DATA_SIZE
) {
698 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size
, USB_CMD_DATA_SIZE
);
699 size
= USB_CMD_DATA_SIZE
;
701 UsbCommand c
= {CMD_FSK_SIM_TAG
, {arg1
, arg2
, size
}};
703 memcpy(c
.d
.asBytes
, DemodBuffer
, size
);
708 // by marshmellow - sim ask data given clock, invert, manchester or raw, separator
709 // - allow pull data from DemodBuffer
710 int CmdLFaskSim(const char *Cmd
)
712 //autodetect clock from Graphbuffer if using demod buffer
713 // needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
714 uint8_t encoding
= 1, separator
= 0;
715 uint8_t clk
=0, invert
=0;
717 char hexData
[32] = {0x00};
718 uint8_t data
[255]= {0x00}; // store entered hex data
721 while(param_getchar(Cmd
, cmdp
) != 0x00)
723 switch(param_getchar(Cmd
, cmdp
))
726 return usage_lf_simask();
732 errors
|= param_getdec(Cmd
,cmdp
+1,&clk
);
736 encoding
=2; //biphase
752 dataLen
= param_getstr(Cmd
, cmdp
+1, hexData
);
756 dataLen
= hextobinarray((char *)data
, hexData
);
758 if (dataLen
==0) errors
=TRUE
;
759 if (errors
) PrintAndLog ("Error getting hex data, datalen: %d",dataLen
);
763 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
769 if(cmdp
== 0 && DemodBufferLen
== 0)
771 errors
= TRUE
;// No args
777 return usage_lf_simask();
779 if (dataLen
== 0){ //using DemodBuffer
780 if (clk
== 0) clk
= GetAskClock("0", false, false);
782 setDemodBuf(data
, dataLen
, 0);
784 if (clk
== 0) clk
= 64;
785 if (encoding
== 0) clk
= clk
/2; //askraw needs to double the clock speed
787 size_t size
=DemodBufferLen
;
788 arg1
= clk
<< 8 | encoding
;
789 arg2
= invert
<< 8 | separator
;
790 if (size
> USB_CMD_DATA_SIZE
) {
791 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size
, USB_CMD_DATA_SIZE
);
792 size
= USB_CMD_DATA_SIZE
;
794 UsbCommand c
= {CMD_ASK_SIM_TAG
, {arg1
, arg2
, size
}};
795 PrintAndLog("preparing to sim ask data: %d bits", size
);
796 memcpy(c
.d
.asBytes
, DemodBuffer
, size
);
801 // by marshmellow - sim psk data given carrier, clock, invert
802 // - allow pull data from DemodBuffer or parameters
803 int CmdLFpskSim(const char *Cmd
)
805 //might be able to autodetect FC and clock from Graphbuffer if using demod buffer
806 //will need carrier, Clock, and bitstream
807 uint8_t carrier
=0, clk
=0;
810 char hexData
[32] = {0x00}; // store entered hex data
811 uint8_t data
[255] = {0x00};
815 while(param_getchar(Cmd
, cmdp
) != 0x00)
817 switch(param_getchar(Cmd
, cmdp
))
820 return usage_lf_simpsk();
826 errors
|= param_getdec(Cmd
,cmdp
+1,&clk
);
830 errors
|= param_getdec(Cmd
,cmdp
+1,&carrier
);
846 dataLen
= param_getstr(Cmd
, cmdp
+1, hexData
);
850 dataLen
= hextobinarray((char *)data
, hexData
);
852 if (dataLen
==0) errors
=TRUE
;
853 if (errors
) PrintAndLog ("Error getting hex data");
857 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
863 if (cmdp
== 0 && DemodBufferLen
== 0)
865 errors
= TRUE
;// No args
871 return usage_lf_simpsk();
873 if (dataLen
== 0){ //using DemodBuffer
874 PrintAndLog("Getting Clocks");
875 if (clk
==0) clk
= GetPskClock("", FALSE
, FALSE
);
876 PrintAndLog("clk: %d",clk
);
877 if (!carrier
) carrier
= GetPskCarrier("", FALSE
, FALSE
);
878 PrintAndLog("carrier: %d", carrier
);
880 setDemodBuf(data
, dataLen
, 0);
883 if (clk
<= 0) clk
= 32;
884 if (carrier
== 0) carrier
= 2;
887 //need to convert psk2 to psk1 data before sim
888 psk2TOpsk1(DemodBuffer
, DemodBufferLen
);
890 PrintAndLog("Sorry, PSK3 not yet available");
894 arg1
= clk
<< 8 | carrier
;
896 size_t size
=DemodBufferLen
;
897 if (size
> USB_CMD_DATA_SIZE
) {
898 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size
, USB_CMD_DATA_SIZE
);
899 size
=USB_CMD_DATA_SIZE
;
901 UsbCommand c
= {CMD_PSK_SIM_TAG
, {arg1
, arg2
, size
}};
902 PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size
);
903 memcpy(c
.d
.asBytes
, DemodBuffer
, size
);
909 int CmdLFSimBidir(const char *Cmd
)
911 // Set ADC to twice the carrier for a slight supersampling
912 // HACK: not implemented in ARMSRC.
913 PrintAndLog("Not implemented yet.");
914 UsbCommand c
= {CMD_LF_SIMULATE_BIDIR
, {47, 384, 0}};
919 int CmdVchDemod(const char *Cmd
)
921 // Is this the entire sync pattern, or does this also include some
922 // data bits that happen to be the same everywhere? That would be
924 static const int SyncPattern
[] = {
925 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
926 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
927 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
928 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
929 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
930 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
931 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
932 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
933 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
934 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
937 // So first, we correlate for the sync pattern, and mark that.
938 int bestCorrel
= 0, bestPos
= 0;
940 // It does us no good to find the sync pattern, with fewer than
941 // 2048 samples after it...
942 for (i
= 0; i
< (GraphTraceLen
-2048); i
++) {
945 for (j
= 0; j
< arraylen(SyncPattern
); j
++) {
946 sum
+= GraphBuffer
[i
+j
]*SyncPattern
[j
];
948 if (sum
> bestCorrel
) {
953 PrintAndLog("best sync at %d [metric %d]", bestPos
, bestCorrel
);
961 for (i
= 0; i
< 2048; i
+= 8) {
964 for (j
= 0; j
< 8; j
++) {
965 sum
+= GraphBuffer
[bestPos
+i
+j
];
972 if(abs(sum
) < worst
) {
977 PrintAndLog("bits:");
978 PrintAndLog("%s", bits
);
979 PrintAndLog("worst metric: %d at pos %d", worst
, worstPos
);
981 if (strcmp(Cmd
, "clone")==0) {
984 for(s
= bits
; *s
; s
++) {
986 for(j
= 0; j
< 16; j
++) {
987 GraphBuffer
[GraphTraceLen
++] = (*s
== '1') ? 1 : 0;
990 RepaintGraphWindow();
996 int CmdLFfind(const char *Cmd
)
999 char cmdp
= param_getchar(Cmd
, 0);
1000 char testRaw
= param_getchar(Cmd
, 1);
1001 if (strlen(Cmd
) > 3 || cmdp
== 'h' || cmdp
== 'H') {
1002 PrintAndLog("Usage: lf search <0|1> [u]");
1003 PrintAndLog(" <use data from Graphbuffer> , if not set, try reading data from tag.");
1004 PrintAndLog(" [Search for Unknown tags] , if not set, reads only known tags.");
1006 PrintAndLog(" sample: lf search = try reading data from tag & search for known tags");
1007 PrintAndLog(" : lf search 1 = use data from GraphBuffer & search for known tags");
1008 PrintAndLog(" : lf search u = try reading data from tag & search for known and unknown tags");
1009 PrintAndLog(" : lf search 1 u = use data from GraphBuffer & search for known and unknown tags");
1014 if (!offline
&& (cmdp
!= '1')){
1016 getSamples("30000",false);
1017 } else if (GraphTraceLen
< 1000) {
1018 PrintAndLog("Data in Graphbuffer was too small.");
1021 if (cmdp
== 'u' || cmdp
== 'U') testRaw
= 'u';
1023 PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag");
1024 PrintAndLog("False Positives ARE possible\n");
1025 PrintAndLog("\nChecking for known tags:\n");
1027 ans
=CmdFSKdemodIO("");
1029 PrintAndLog("\nValid IO Prox ID Found!");
1033 ans
=CmdFSKdemodPyramid("");
1035 PrintAndLog("\nValid Pyramid ID Found!");
1039 ans
=CmdFSKdemodParadox("");
1041 PrintAndLog("\nValid Paradox ID Found!");
1045 ans
=CmdFSKdemodAWID("");
1047 PrintAndLog("\nValid AWID ID Found!");
1051 ans
=CmdFSKdemodHID("");
1053 PrintAndLog("\nValid HID Prox ID Found!");
1057 //add psk and indala
1058 ans
=CmdIndalaDecode("");
1060 PrintAndLog("\nValid Indala ID Found!");
1064 ans
=CmdAskEM410xDemod("");
1066 PrintAndLog("\nValid EM410x ID Found!");
1070 ans
=CmdG_Prox_II_Demod("");
1072 PrintAndLog("\nValid G Prox II ID Found!");
1076 ans
=CmdFDXBdemodBI("");
1078 PrintAndLog("\nValid FDX-B ID Found!");
1082 ans
=EM4x50Read("", false);
1084 PrintAndLog("\nValid EM4x50 ID Found!");
1088 ans
=CmdPSKNexWatch("");
1090 PrintAndLog("\nValid NexWatch ID Found!");
1094 PrintAndLog("\nNo Known Tags Found!\n");
1095 if (testRaw
=='u' || testRaw
=='U'){
1096 //test unknown tag formats (raw mode)
1097 PrintAndLog("\nChecking for Unknown tags:\n");
1098 ans
=AutoCorrelate(4000, FALSE
, FALSE
);
1099 if (ans
> 0) PrintAndLog("Possible Auto Correlation of %d repeating samples",ans
);
1100 ans
=GetFskClock("",FALSE
,FALSE
);
1101 if (ans
!= 0){ //fsk
1102 ans
=FSKrawDemod("",TRUE
);
1104 PrintAndLog("\nUnknown FSK Modulated Tag Found!");
1108 ans
=ASKDemod("0 0 0",TRUE
,FALSE
,1);
1110 PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
1111 PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
1114 ans
=CmdPSK1rawDemod("");
1116 PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
1117 PrintAndLog("\nCould also be PSK3 - [currently not supported]");
1118 PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod");
1121 PrintAndLog("\nNo Data Found!\n");
1126 static command_t CommandTable
[] =
1128 {"help", CmdHelp
, 1, "This help"},
1129 {"cmdread", CmdLFCommandRead
, 0, "<off period> <'0' period> <'1' period> <command> ['h'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'h' for 134)"},
1130 {"em4x", CmdLFEM4X
, 1, "{ EM4X RFIDs... }"},
1131 {"config", CmdLFSetConfig
, 0, "Set config for LF sampling, bit/sample, decimation, frequency"},
1132 {"flexdemod", CmdFlexdemod
, 1, "Demodulate samples for FlexPass"},
1133 {"hid", CmdLFHID
, 1, "{ HID RFIDs... }"},
1134 {"awid", CmdLFAWID
, 1, "{ AWID RFIDs... }"},
1135 {"io", CmdLFIO
, 1, "{ ioProx tags... }"},
1136 {"indalademod", CmdIndalaDemod
, 1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
1137 {"indalaclone", CmdIndalaClone
, 0, "<UID> ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"},
1138 {"read", CmdLFRead
, 0, "['s' silent] Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"},
1139 {"search", CmdLFfind
, 1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) - 'u' to search for unknown tags"},
1140 {"sim", CmdLFSim
, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
1141 {"simask", CmdLFaskSim
, 0, "[clock] [invert <1|0>] [manchester/raw <'m'|'r'>] [msg separator 's'] [d <hexdata>] -- Simulate LF ASK tag from demodbuffer or input"},
1142 {"simfsk", CmdLFfskSim
, 0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] -- Simulate LF FSK tag from demodbuffer or input"},
1143 {"simpsk", CmdLFpskSim
, 0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] -- Simulate LF PSK tag from demodbuffer or input"},
1144 {"simbidir", CmdLFSimBidir
, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
1145 {"snoop", CmdLFSnoop
, 0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
1146 {"ti", CmdLFTI
, 1, "{ TI RFIDs... }"},
1147 {"hitag", CmdLFHitag
, 1, "{ Hitag tags and transponders... }"},
1148 {"vchdemod", CmdVchDemod
, 1, "['clone'] -- Demodulate samples for VeriChip"},
1149 {"t55xx", CmdLFT55XX
, 1, "{ T55xx RFIDs... }"},
1150 {"pcf7931", CmdLFPCF7931
, 1, "{PCF7931 RFIDs...}"},
1151 {NULL
, NULL
, 0, NULL
}
1154 int CmdLF(const char *Cmd
)
1156 CmdsParse(CommandTable
, Cmd
);
1160 int CmdHelp(const char *Cmd
)
1162 CmdsHelp(CommandTable
);