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"
26 #include "cmdlfem4x.h"
27 #include "cmdlfhitag.h"
28 #include "cmdlft55xx.h"
29 #include "cmdlfpcf7931.h"
33 static int CmdHelp(const char *Cmd
);
35 /* send a command before reading */
36 int CmdLFCommandRead(const char *Cmd
)
42 UsbCommand c
= {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K
};
43 sscanf(Cmd
, "%"lli
" %"lli
" %"lli
" %s %s", &c
.arg
[0], &c
.arg
[1], &c
.arg
[2],(char*)(&c
.d
.asBytes
),(char*)(&dummy
+1));
44 // in case they specified 'h'
45 strcpy((char *)&c
.d
.asBytes
+ strlen((char *)c
.d
.asBytes
), dummy
);
50 int CmdFlexdemod(const char *Cmd
)
53 for (i
= 0; i
< GraphTraceLen
; ++i
) {
54 if (GraphBuffer
[i
] < 0) {
63 for (start
= 0; start
< GraphTraceLen
- LONG_WAIT
; start
++) {
64 int first
= GraphBuffer
[start
];
65 for (i
= start
; i
< start
+ LONG_WAIT
; i
++) {
66 if (GraphBuffer
[i
] != first
) {
70 if (i
== (start
+ LONG_WAIT
)) {
74 if (start
== GraphTraceLen
- LONG_WAIT
) {
75 PrintAndLog("nothing to wait for");
79 GraphBuffer
[start
] = 2;
80 GraphBuffer
[start
+1] = -2;
81 uint8_t bits
[64] = {0x00};
85 for (bit
= 0; bit
< 64; bit
++) {
87 for (int j
= 0; j
< 16; j
++) {
88 sum
+= GraphBuffer
[i
++];
91 bits
[bit
] = (sum
> 0) ? 1 : 0;
93 PrintAndLog("bit %d sum %d", bit
, sum
);
96 for (bit
= 0; bit
< 64; bit
++) {
99 for (j
= 0; j
< 16; j
++) {
100 sum
+= GraphBuffer
[i
++];
102 if (sum
> 0 && bits
[bit
] != 1) {
103 PrintAndLog("oops1 at %d", bit
);
105 if (sum
< 0 && bits
[bit
] != 0) {
106 PrintAndLog("oops2 at %d", bit
);
110 // HACK writing back to graphbuffer.
111 GraphTraceLen
= 32*64;
114 for (bit
= 0; bit
< 64; bit
++) {
116 phase
= (bits
[bit
] == 0) ? 0 : 1;
119 for (j
= 0; j
< 32; j
++) {
120 GraphBuffer
[i
++] = phase
;
125 RepaintGraphWindow();
129 int CmdIndalaDemod(const char *Cmd
)
131 // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
137 // worst case with GraphTraceLen=64000 is < 4096
138 // under normal conditions it's < 2048
140 uint8_t rawbits
[4096];
142 int worst
= 0, worstPos
= 0;
143 // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
144 for (i
= 0; i
< GraphTraceLen
-1; i
+= 2) {
146 if ((GraphBuffer
[i
] > GraphBuffer
[i
+ 1]) && (state
!= 1)) {
148 for (j
= 0; j
< count
- 8; j
+= 16) {
149 rawbits
[rawbit
++] = 0;
151 if ((abs(count
- j
)) > worst
) {
152 worst
= abs(count
- j
);
158 } else if ((GraphBuffer
[i
] < GraphBuffer
[i
+ 1]) && (state
!= 0)) {
160 for (j
= 0; j
< count
- 8; j
+= 16) {
161 rawbits
[rawbit
++] = 1;
163 if ((abs(count
- j
)) > worst
) {
164 worst
= abs(count
- j
);
174 PrintAndLog("Recovered %d raw bits, expected: %d", rawbit
, GraphTraceLen
/32);
175 PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst
, worstPos
);
180 // Finding the start of a UID
181 int uidlen
, long_wait
;
182 if (strcmp(Cmd
, "224") == 0) {
192 for (start
= 0; start
<= rawbit
- uidlen
; start
++) {
193 first
= rawbits
[start
];
194 for (i
= start
; i
< start
+ long_wait
; i
++) {
195 if (rawbits
[i
] != first
) {
199 if (i
== (start
+ long_wait
)) {
204 if (start
== rawbit
- uidlen
+ 1) {
205 PrintAndLog("nothing to wait for");
209 // Inverting signal if needed
211 for (i
= start
; i
< rawbit
; i
++) {
212 rawbits
[i
] = !rawbits
[i
];
217 uint8_t bits
[224] = {0x00};
218 char showbits
[225] = {0x00};
223 if (uidlen
> rawbit
) {
224 PrintAndLog("Warning: not enough raw bits to get a full UID");
225 for (bit
= 0; bit
< rawbit
; bit
++) {
226 bits
[bit
] = rawbits
[i
++];
227 // As we cannot know the parity, let's use "." and "/"
228 showbits
[bit
] = '.' + bits
[bit
];
230 showbits
[bit
+1]='\0';
231 PrintAndLog("Partial UID=%s", showbits
);
234 for (bit
= 0; bit
< uidlen
; bit
++) {
235 bits
[bit
] = rawbits
[i
++];
236 showbits
[bit
] = '0' + bits
[bit
];
242 uint32_t uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
;
247 for( idx
=0; idx
<64; idx
++) {
248 if (showbits
[idx
] == '0') {
249 uid1
=(uid1
<<1)|(uid2
>>31);
252 uid1
=(uid1
<<1)|(uid2
>>31);
256 PrintAndLog("UID=%s (%x%08x)", showbits
, uid1
, uid2
);
259 uid3
= uid4
= uid5
= uid6
= uid7
= 0;
261 for( idx
=0; idx
<224; idx
++) {
262 uid1
=(uid1
<<1)|(uid2
>>31);
263 uid2
=(uid2
<<1)|(uid3
>>31);
264 uid3
=(uid3
<<1)|(uid4
>>31);
265 uid4
=(uid4
<<1)|(uid5
>>31);
266 uid5
=(uid5
<<1)|(uid6
>>31);
267 uid6
=(uid6
<<1)|(uid7
>>31);
269 if (showbits
[idx
] == '0')
270 uid7
= (uid7
<<1) | 0;
272 uid7
= (uid7
<<1) | 1;
274 PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits
, uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
);
277 // Checking UID against next occurrences
279 for (; i
+ uidlen
<= rawbit
;) {
281 for (bit
= 0; bit
< uidlen
; bit
++) {
282 if (bits
[bit
] != rawbits
[i
++]) {
293 PrintAndLog("Occurrences: %d (expected %d)", times
, (rawbit
- start
) / uidlen
);
295 // Remodulating for tag cloning
296 // HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod)
297 // since this changes graphbuffer data.
298 GraphTraceLen
= 32*uidlen
;
301 for (bit
= 0; bit
< uidlen
; bit
++) {
302 if (bits
[bit
] == 0) {
308 for (j
= 0; j
< 32; j
++) {
309 GraphBuffer
[i
++] = phase
;
314 RepaintGraphWindow();
318 int CmdIndalaClone(const char *Cmd
)
321 unsigned int uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
;
323 uid1
= uid2
= uid3
= uid4
= uid5
= uid6
= uid7
= 0;
326 if (strchr(Cmd
,'l') != 0) {
327 while (sscanf(&Cmd
[i
++], "%1x", &n
) == 1) {
328 uid1
= (uid1
<< 4) | (uid2
>> 28);
329 uid2
= (uid2
<< 4) | (uid3
>> 28);
330 uid3
= (uid3
<< 4) | (uid4
>> 28);
331 uid4
= (uid4
<< 4) | (uid5
>> 28);
332 uid5
= (uid5
<< 4) | (uid6
>> 28);
333 uid6
= (uid6
<< 4) | (uid7
>> 28);
334 uid7
= (uid7
<< 4) | (n
& 0xf);
336 PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1
, uid2
, uid3
, uid4
, uid5
, uid6
, uid7
);
337 c
.cmd
= CMD_INDALA_CLONE_TAG_L
;
338 c
.d
.asDwords
[0] = uid1
;
339 c
.d
.asDwords
[1] = uid2
;
340 c
.d
.asDwords
[2] = uid3
;
341 c
.d
.asDwords
[3] = uid4
;
342 c
.d
.asDwords
[4] = uid5
;
343 c
.d
.asDwords
[5] = uid6
;
344 c
.d
.asDwords
[6] = uid7
;
346 while (sscanf(&Cmd
[i
++], "%1x", &n
) == 1) {
347 uid1
= (uid1
<< 4) | (uid2
>> 28);
348 uid2
= (uid2
<< 4) | (n
& 0xf);
350 PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1
, uid2
);
351 c
.cmd
= CMD_INDALA_CLONE_TAG
;
362 PrintAndLog("Usage: lf read");
363 PrintAndLog("Options: ");
364 PrintAndLog(" h This help");
365 PrintAndLog(" s silent run no printout");
366 PrintAndLog("This function takes no arguments. ");
367 PrintAndLog("Use 'lf config' to set parameters.");
372 PrintAndLog("Usage: lf snoop");
373 PrintAndLog("Options: ");
374 PrintAndLog(" h This help");
375 PrintAndLog("This function takes no arguments. ");
376 PrintAndLog("Use 'lf config' to set parameters.");
380 int usage_lf_config()
382 PrintAndLog("Usage: lf config [H|<divisor>] [b <bps>] [d <decim>] [a 0|1]");
383 PrintAndLog("Options: ");
384 PrintAndLog(" h This help");
385 PrintAndLog(" L Low frequency (125 KHz)");
386 PrintAndLog(" H High frequency (134 KHz)");
387 PrintAndLog(" q <divisor> Manually set divisor. 88-> 134KHz, 95-> 125 Hz");
388 PrintAndLog(" b <bps> Sets resolution of bits per sample. Default (max): 8");
389 PrintAndLog(" d <decim> Sets decimation. A value of N saves only 1 in N samples. Default: 1");
390 PrintAndLog(" a [0|1] Averaging - if set, will average the stored sample value when decimating. Default: 1");
391 PrintAndLog(" t <threshold> Sets trigger threshold. 0 means no threshold");
392 PrintAndLog("Examples:");
393 PrintAndLog(" lf config b 8 L");
394 PrintAndLog(" Samples at 125KHz, 8bps.");
395 PrintAndLog(" lf config H b 4 d 3");
396 PrintAndLog(" Samples at 134KHz, averages three samples into one, stored with ");
397 PrintAndLog(" a resolution of 4 bits per sample.");
398 PrintAndLog(" lf read");
399 PrintAndLog(" Performs a read (active field)");
400 PrintAndLog(" lf snoop");
401 PrintAndLog(" Performs a snoop (no active field)");
405 int CmdLFSetConfig(const char *Cmd
)
408 uint8_t divisor
= 0;//Frequency divisor
409 uint8_t bps
= 0; // Bits per sample
410 uint8_t decimation
= 0; //How many to keep
411 bool averaging
= 1; // Defaults to true
413 int trigger_threshold
=-1;//Means no change
414 uint8_t unsigned_trigg
= 0;
417 while(param_getchar(Cmd
, cmdp
) != 0x00)
419 switch(param_getchar(Cmd
, cmdp
))
422 return usage_lf_config();
432 errors
|= param_getdec(Cmd
,cmdp
+1,&divisor
);
436 errors
|= param_getdec(Cmd
,cmdp
+1,&unsigned_trigg
);
438 if(!errors
) trigger_threshold
= unsigned_trigg
;
441 errors
|= param_getdec(Cmd
,cmdp
+1,&bps
);
445 errors
|= param_getdec(Cmd
,cmdp
+1,&decimation
);
449 averaging
= param_getchar(Cmd
,cmdp
+1) == '1';
453 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
461 errors
= 1;// No args
467 return usage_lf_config();
469 //Bps is limited to 8, so fits in lower half of arg1
470 if(bps
>> 8) bps
= 8;
472 sample_config config
= {
473 decimation
,bps
,averaging
,divisor
,trigger_threshold
475 //Averaging is a flag on high-bit of arg[1]
476 UsbCommand c
= {CMD_SET_LF_SAMPLING_CONFIG
};
477 memcpy(c
.d
.asBytes
,&config
,sizeof(sample_config
));
482 int CmdLFRead(const char *Cmd
)
487 if (param_getchar(Cmd
, cmdp
) == 'h')
489 return usage_lf_read();
491 if (param_getchar(Cmd
, cmdp
) == 's') arg1
= true; //suppress print
492 //And ship it to device
493 UsbCommand c
= {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K
, {arg1
,0,0}};
495 WaitForResponse(CMD_ACK
,NULL
);
499 int CmdLFSnoop(const char *Cmd
)
502 if(param_getchar(Cmd
, cmdp
) == 'h')
504 return usage_lf_snoop();
507 UsbCommand c
= {CMD_LF_SNOOP_RAW_ADC_SAMPLES
};
509 WaitForResponse(CMD_ACK
,NULL
);
513 static void ChkBitstream(const char *str
)
517 /* convert to bitstream if necessary */
518 for (i
= 0; i
< (int)(GraphTraceLen
/ 2); i
++){
519 if (GraphBuffer
[i
] > 1 || GraphBuffer
[i
] < 0) {
525 //Attempt to simulate any wave in buffer (one bit per output sample)
526 // converts GraphBuffer to bitstream (based on zero crossings) if needed.
527 int CmdLFSim(const char *Cmd
)
532 sscanf(Cmd
, "%i", &gap
);
534 // convert to bitstream if necessary
538 //can send only 512 bits at a time (1 byte sent per bit...)
539 printf("Sending [%d bytes]", GraphTraceLen
);
540 for (i
= 0; i
< GraphTraceLen
; i
+= USB_CMD_DATA_SIZE
) {
541 UsbCommand c
={CMD_DOWNLOADED_SIM_SAMPLES_125K
, {i
, 0, 0}};
543 for (j
= 0; j
< USB_CMD_DATA_SIZE
; j
++) {
544 c
.d
.asBytes
[j
] = GraphBuffer
[i
+j
];
547 WaitForResponse(CMD_ACK
,NULL
);
552 PrintAndLog("Starting to simulate");
553 UsbCommand c
= {CMD_SIMULATE_TAG_125K
, {GraphTraceLen
, gap
, 0}};
558 int usage_lf_simfsk(void)
561 PrintAndLog("Usage: lf simfsk [c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>]");
562 PrintAndLog("Options: ");
563 PrintAndLog(" h This help");
564 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
565 PrintAndLog(" i invert data");
566 PrintAndLog(" H <fcHigh> Manually set the larger Field Clock");
567 PrintAndLog(" L <fcLow> Manually set the smaller Field Clock");
568 //PrintAndLog(" s TBD- -to enable a gap between playback repetitions - default: no gap");
569 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
570 PrintAndLog("\n NOTE: if you set one clock manually set them all manually");
574 int usage_lf_simask(void)
577 PrintAndLog("Usage: lf simask [c <clock>] [i] [b|m|r] [s] [d <raw hex to sim>]");
578 PrintAndLog("Options: ");
579 PrintAndLog(" h This help");
580 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
581 PrintAndLog(" i invert data");
582 PrintAndLog(" b sim ask/biphase");
583 PrintAndLog(" m sim ask/manchester - Default");
584 PrintAndLog(" r sim ask/raw");
585 PrintAndLog(" s TBD- -to enable a gap between playback repetitions - default: no gap");
586 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
590 int usage_lf_simpsk(void)
593 PrintAndLog("Usage: lf simpsk [1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>]");
594 PrintAndLog("Options: ");
595 PrintAndLog(" h This help");
596 PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
597 PrintAndLog(" i invert data");
598 PrintAndLog(" 1 set PSK1 (default)");
599 PrintAndLog(" 2 set PSK2");
600 PrintAndLog(" 3 set PSK3");
601 PrintAndLog(" r <carrier> 2|4|8 are valid carriers: default = 2");
602 PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
606 // by marshmellow - sim ask data given clock, fcHigh, fcLow, invert
607 // - allow pull data from DemodBuffer
608 int CmdLFfskSim(const char *Cmd
)
610 //might be able to autodetect FCs and clock from Graphbuffer if using demod buffer
611 // otherwise will need FChigh, FClow, Clock, and bitstream
612 uint8_t fcHigh
=0, fcLow
=0, clk
=0;
615 char hexData
[32] = {0x00}; // store entered hex data
616 uint8_t data
[255] = {0x00};
619 while(param_getchar(Cmd
, cmdp
) != 0x00)
621 switch(param_getchar(Cmd
, cmdp
))
624 return usage_lf_simfsk();
630 errors
|= param_getdec(Cmd
,cmdp
+1,&clk
);
634 errors
|= param_getdec(Cmd
,cmdp
+1,&fcHigh
);
638 errors
|= param_getdec(Cmd
,cmdp
+1,&fcLow
);
646 dataLen
= param_getstr(Cmd
, cmdp
+1, hexData
);
650 dataLen
= hextobinarray((char *)data
, hexData
);
652 if (dataLen
==0) errors
=TRUE
;
653 if (errors
) PrintAndLog ("Error getting hex data");
657 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
663 if(cmdp
== 0 && DemodBufferLen
== 0)
665 errors
= TRUE
;// No args
671 return usage_lf_simfsk();
674 if (dataLen
== 0){ //using DemodBuffer
675 if (clk
==0 || fcHigh
==0 || fcLow
==0){ //manual settings must set them all
676 uint8_t ans
= fskClocks(&fcHigh
, &fcLow
, &clk
, 0);
678 if (!fcHigh
) fcHigh
=10;
684 setDemodBuf(data
, dataLen
, 0);
687 //default if not found
688 if (clk
== 0) clk
= 50;
689 if (fcHigh
== 0) fcHigh
= 10;
690 if (fcLow
== 0) fcLow
= 8;
693 arg1
= fcHigh
<< 8 | fcLow
;
694 arg2
= invert
<< 8 | clk
;
695 size_t size
= DemodBufferLen
;
696 if (size
> USB_CMD_DATA_SIZE
) {
697 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size
, USB_CMD_DATA_SIZE
);
698 size
= USB_CMD_DATA_SIZE
;
700 UsbCommand c
= {CMD_FSK_SIM_TAG
, {arg1
, arg2
, size
}};
702 memcpy(c
.d
.asBytes
, DemodBuffer
, size
);
707 // by marshmellow - sim ask data given clock, invert, manchester or raw, separator
708 // - allow pull data from DemodBuffer
709 int CmdLFaskSim(const char *Cmd
)
711 //autodetect clock from Graphbuffer if using demod buffer
712 // needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
713 uint8_t encoding
= 1, separator
= 0;
714 uint8_t clk
=0, invert
=0;
716 char hexData
[32] = {0x00};
717 uint8_t data
[255]= {0x00}; // store entered hex data
720 while(param_getchar(Cmd
, cmdp
) != 0x00)
722 switch(param_getchar(Cmd
, cmdp
))
725 return usage_lf_simask();
731 errors
|= param_getdec(Cmd
,cmdp
+1,&clk
);
735 encoding
=2; //biphase
751 dataLen
= param_getstr(Cmd
, cmdp
+1, hexData
);
755 dataLen
= hextobinarray((char *)data
, hexData
);
757 if (dataLen
==0) errors
=TRUE
;
758 if (errors
) PrintAndLog ("Error getting hex data, datalen: %d",dataLen
);
762 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
768 if(cmdp
== 0 && DemodBufferLen
== 0)
770 errors
= TRUE
;// No args
776 return usage_lf_simask();
778 if (dataLen
== 0){ //using DemodBuffer
779 if (clk
== 0) clk
= GetAskClock("0", false, false);
781 setDemodBuf(data
, dataLen
, 0);
783 if (clk
== 0) clk
= 64;
784 if (encoding
== 0) clk
= clk
/2; //askraw needs to double the clock speed
786 size_t size
=DemodBufferLen
;
787 arg1
= clk
<< 8 | encoding
;
788 arg2
= invert
<< 8 | separator
;
789 if (size
> USB_CMD_DATA_SIZE
) {
790 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size
, USB_CMD_DATA_SIZE
);
791 size
= USB_CMD_DATA_SIZE
;
793 UsbCommand c
= {CMD_ASK_SIM_TAG
, {arg1
, arg2
, size
}};
794 PrintAndLog("preparing to sim ask data: %d bits", size
);
795 memcpy(c
.d
.asBytes
, DemodBuffer
, size
);
800 // by marshmellow - sim psk data given carrier, clock, invert
801 // - allow pull data from DemodBuffer or parameters
802 int CmdLFpskSim(const char *Cmd
)
804 //might be able to autodetect FC and clock from Graphbuffer if using demod buffer
805 //will need carrier, Clock, and bitstream
806 uint8_t carrier
=0, clk
=0;
809 char hexData
[32] = {0x00}; // store entered hex data
810 uint8_t data
[255] = {0x00};
814 while(param_getchar(Cmd
, cmdp
) != 0x00)
816 switch(param_getchar(Cmd
, cmdp
))
819 return usage_lf_simpsk();
825 errors
|= param_getdec(Cmd
,cmdp
+1,&clk
);
829 errors
|= param_getdec(Cmd
,cmdp
+1,&carrier
);
845 dataLen
= param_getstr(Cmd
, cmdp
+1, hexData
);
849 dataLen
= hextobinarray((char *)data
, hexData
);
851 if (dataLen
==0) errors
=TRUE
;
852 if (errors
) PrintAndLog ("Error getting hex data");
856 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd
, cmdp
));
862 if (cmdp
== 0 && DemodBufferLen
== 0)
864 errors
= TRUE
;// No args
870 return usage_lf_simpsk();
872 if (dataLen
== 0){ //using DemodBuffer
873 PrintAndLog("Getting Clocks");
874 if (clk
==0) clk
= GetPskClock("", FALSE
, FALSE
);
875 PrintAndLog("clk: %d",clk
);
876 if (!carrier
) carrier
= GetPskCarrier("", FALSE
, FALSE
);
877 PrintAndLog("carrier: %d", carrier
);
879 setDemodBuf(data
, dataLen
, 0);
882 if (clk
<= 0) clk
= 32;
883 if (carrier
== 0) carrier
= 2;
886 //need to convert psk2 to psk1 data before sim
887 psk2TOpsk1(DemodBuffer
, DemodBufferLen
);
889 PrintAndLog("Sorry, PSK3 not yet available");
893 arg1
= clk
<< 8 | carrier
;
895 size_t size
=DemodBufferLen
;
896 if (size
> USB_CMD_DATA_SIZE
) {
897 PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size
, USB_CMD_DATA_SIZE
);
898 size
=USB_CMD_DATA_SIZE
;
900 UsbCommand c
= {CMD_PSK_SIM_TAG
, {arg1
, arg2
, size
}};
901 PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size
);
902 memcpy(c
.d
.asBytes
, DemodBuffer
, size
);
908 int CmdLFSimBidir(const char *Cmd
)
910 // Set ADC to twice the carrier for a slight supersampling
911 // HACK: not implemented in ARMSRC.
912 PrintAndLog("Not implemented yet.");
913 UsbCommand c
= {CMD_LF_SIMULATE_BIDIR
, {47, 384, 0}};
918 int CmdVchDemod(const char *Cmd
)
920 // Is this the entire sync pattern, or does this also include some
921 // data bits that happen to be the same everywhere? That would be
923 static const int SyncPattern
[] = {
924 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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,
936 // So first, we correlate for the sync pattern, and mark that.
937 int bestCorrel
= 0, bestPos
= 0;
939 // It does us no good to find the sync pattern, with fewer than
940 // 2048 samples after it...
941 for (i
= 0; i
< (GraphTraceLen
-2048); i
++) {
944 for (j
= 0; j
< arraylen(SyncPattern
); j
++) {
945 sum
+= GraphBuffer
[i
+j
]*SyncPattern
[j
];
947 if (sum
> bestCorrel
) {
952 PrintAndLog("best sync at %d [metric %d]", bestPos
, bestCorrel
);
960 for (i
= 0; i
< 2048; i
+= 8) {
963 for (j
= 0; j
< 8; j
++) {
964 sum
+= GraphBuffer
[bestPos
+i
+j
];
971 if(abs(sum
) < worst
) {
976 PrintAndLog("bits:");
977 PrintAndLog("%s", bits
);
978 PrintAndLog("worst metric: %d at pos %d", worst
, worstPos
);
980 if (strcmp(Cmd
, "clone")==0) {
983 for(s
= bits
; *s
; s
++) {
985 for(j
= 0; j
< 16; j
++) {
986 GraphBuffer
[GraphTraceLen
++] = (*s
== '1') ? 1 : 0;
989 RepaintGraphWindow();
995 int CmdLFfind(const char *Cmd
)
998 char cmdp
= param_getchar(Cmd
, 0);
999 char testRaw
= param_getchar(Cmd
, 1);
1000 if (strlen(Cmd
) > 3 || cmdp
== 'h' || cmdp
== 'H') {
1001 PrintAndLog("Usage: lf search <0|1> [u]");
1002 PrintAndLog(" <use data from Graphbuffer> , if not set, try reading data from tag.");
1003 PrintAndLog(" [Search for Unknown tags] , if not set, reads only known tags.");
1005 PrintAndLog(" sample: lf search = try reading data from tag & search for known tags");
1006 PrintAndLog(" : lf search 1 = use data from GraphBuffer & search for known tags");
1007 PrintAndLog(" : lf search u = try reading data from tag & search for known and unknown tags");
1008 PrintAndLog(" : lf search 1 u = use data from GraphBuffer & search for known and unknown tags");
1013 if (!offline
&& (cmdp
!= '1')){
1015 getSamples("30000",false);
1016 } else if (GraphTraceLen
< 1000) {
1017 PrintAndLog("Data in Graphbuffer was too small.");
1020 if (cmdp
== 'u' || cmdp
== 'U') testRaw
= 'u';
1022 PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag");
1023 PrintAndLog("False Positives ARE possible\n");
1024 PrintAndLog("\nChecking for known tags:\n");
1026 ans
=CmdFSKdemodIO("");
1028 PrintAndLog("\nValid IO Prox ID Found!");
1032 ans
=CmdFSKdemodPyramid("");
1034 PrintAndLog("\nValid Pyramid ID Found!");
1038 ans
=CmdFSKdemodParadox("");
1040 PrintAndLog("\nValid Paradox ID Found!");
1044 ans
=CmdFSKdemodAWID("");
1046 PrintAndLog("\nValid AWID ID Found!");
1050 ans
=CmdFSKdemodHID("");
1052 PrintAndLog("\nValid HID Prox ID Found!");
1056 //add psk and indala
1057 ans
=CmdIndalaDecode("");
1059 PrintAndLog("\nValid Indala ID Found!");
1063 ans
=CmdAskEM410xDemod("");
1065 PrintAndLog("\nValid EM410x ID Found!");
1069 ans
=CmdG_Prox_II_Demod("");
1071 PrintAndLog("\nValid G Prox II ID Found!");
1075 ans
=EM4x50Read("", false);
1077 PrintAndLog("\nValid EM4x50 ID Found!");
1080 PrintAndLog("\nNo Known Tags Found!\n");
1081 if (testRaw
=='u' || testRaw
=='U'){
1082 //test unknown tag formats (raw mode)
1083 PrintAndLog("\nChecking for Unknown tags:\n");
1084 ans
=AutoCorrelate(4000, FALSE
, FALSE
);
1085 if (ans
> 0) PrintAndLog("Possible Auto Correlation of %d repeating samples",ans
);
1086 ans
=GetFskClock("",FALSE
,FALSE
);
1087 if (ans
!= 0){ //fsk
1088 ans
=FSKrawDemod("",TRUE
);
1090 PrintAndLog("\nUnknown FSK Modulated Tag Found!");
1094 ans
=ASKDemod("0 0 0",TRUE
,FALSE
,1);
1096 PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
1097 PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
1100 ans
=CmdPSK1rawDemod("");
1102 PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
1103 PrintAndLog("\nCould also be PSK3 - [currently not supported]");
1104 PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod");
1107 PrintAndLog("\nNo Data Found!\n");
1112 static command_t CommandTable
[] =
1114 {"help", CmdHelp
, 1, "This help"},
1115 {"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)"},
1116 {"em4x", CmdLFEM4X
, 1, "{ EM4X RFIDs... }"},
1117 {"config", CmdLFSetConfig
, 0, "Set config for LF sampling, bit/sample, decimation, frequency"},
1118 {"flexdemod", CmdFlexdemod
, 1, "Demodulate samples for FlexPass"},
1119 {"hid", CmdLFHID
, 1, "{ HID RFIDs... }"},
1120 {"io", CmdLFIO
, 1, "{ ioProx tags... }"},
1121 {"indalademod", CmdIndalaDemod
, 1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
1122 {"indalaclone", CmdIndalaClone
, 0, "<UID> ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"},
1123 {"read", CmdLFRead
, 0, "['s' silent] Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"},
1124 {"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"},
1125 {"sim", CmdLFSim
, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
1126 {"simask", CmdLFaskSim
, 0, "[clock] [invert <1|0>] [manchester/raw <'m'|'r'>] [msg separator 's'] [d <hexdata>] -- Simulate LF ASK tag from demodbuffer or input"},
1127 {"simfsk", CmdLFfskSim
, 0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] -- Simulate LF FSK tag from demodbuffer or input"},
1128 {"simpsk", CmdLFpskSim
, 0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] -- Simulate LF PSK tag from demodbuffer or input"},
1129 {"simbidir", CmdLFSimBidir
, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
1130 {"snoop", CmdLFSnoop
, 0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
1131 {"ti", CmdLFTI
, 1, "{ TI RFIDs... }"},
1132 {"hitag", CmdLFHitag
, 1, "{ Hitag tags and transponders... }"},
1133 {"vchdemod", CmdVchDemod
, 1, "['clone'] -- Demodulate samples for VeriChip"},
1134 {"t55xx", CmdLFT55XX
, 1, "{ T55xx RFIDs... }"},
1135 {"pcf7931", CmdLFPCF7931
, 1, "{PCF7931 RFIDs...}"},
1136 {NULL
, NULL
, 0, NULL
}
1139 int CmdLF(const char *Cmd
)
1141 CmdsParse(CommandTable
, Cmd
);
1145 int CmdHelp(const char *Cmd
)
1147 CmdsHelp(CommandTable
);