#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-//#include <inttypes.h>
#include <limits.h>
#include "proxmark3.h"
#include "data.h"
#include "cmdmain.h"
#include "cmddata.h"
#include "lfdemod.h"
-
+uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
+int DemodBufferLen;
static int CmdHelp(const char *Cmd);
+//set the demod buffer with given array of binary (one bit per byte)
+//by marshmellow
+void setDemodBuf(uint8_t *buff,int size)
+{
+ int i=0;
+ for (; i < size; ++i){
+ DemodBuffer[i]=buff[i];
+ }
+ DemodBufferLen=size;
+ return;
+}
+
+//by marshmellow
+void printDemodBuff()
+{
+ uint32_t i = 0;
+ int bitLen = DemodBufferLen;
+ if (bitLen<16) {
+ PrintAndLog("no bits found in demod buffer");
+ return;
+ }
+ if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
+ for (i = 0; i <= (bitLen-16); i+=16) {
+ PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
+ DemodBuffer[i],
+ DemodBuffer[i+1],
+ DemodBuffer[i+2],
+ DemodBuffer[i+3],
+ DemodBuffer[i+4],
+ DemodBuffer[i+5],
+ DemodBuffer[i+6],
+ DemodBuffer[i+7],
+ DemodBuffer[i+8],
+ DemodBuffer[i+9],
+ DemodBuffer[i+10],
+ DemodBuffer[i+11],
+ DemodBuffer[i+12],
+ DemodBuffer[i+13],
+ DemodBuffer[i+14],
+ DemodBuffer[i+15]);
+ }
+ return;
+}
+
+
int CmdAmp(const char *Cmd)
{
int i, rising, falling;
return 0;
}
-void printBitStream(uint8_t BitStream[], uint32_t bitLen){
+//by marshmellow
+void printBitStream(uint8_t BitStream[], uint32_t bitLen)
+{
uint32_t i = 0;
if (bitLen<16) {
PrintAndLog("Too few bits found: %d",bitLen);
return;
}
if (bitLen>512) bitLen=512;
- for (i = 0; i < (bitLen-16); i+=16) {
+ for (i = 0; i <= (bitLen-16); i+=16) {
PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
BitStream[i],
BitStream[i+1],
}
return;
}
+//by marshmellow
void printEM410x(uint64_t id)
{
if (id !=0){
return;
}
+//by marshmellow
int CmdEm410xDecode(const char *Cmd)
{
uint64_t id=0;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- uint32_t i=0;
- for (i=0;i<GraphTraceLen;++i){
- BitStream[i]=(uint8_t)(GraphBuffer[i]+128);
- }
- id = Em410xDecode(BitStream,i);
+ // uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ // uint32_t i=0;
+ // i=getFromGraphBuf(BitStream);
+ id = Em410xDecode(DemodBuffer,DemodBufferLen);
printEM410x(id);
+ if (id>0) return 1;
return 0;
}
-int getFromGraphBuf(uint8_t *buff)
-{
- uint32_t i;
- for (i=0;i<GraphTraceLen;++i)
- buff[i]=(uint8_t)(GraphBuffer[i]+128);
- return i;
-}
//by marshmellow
//takes 2 arguments - clock and invert both as integers
PrintAndLog("Invalid argument: %s", Cmd);
return 0;
}
- uint32_t BitLen = getFromGraphBuf(BitStream);
+ int BitLen = getFromGraphBuf(BitStream);
+ // PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
int errCnt=0;
errCnt = askmandemod(BitStream, &BitLen,&clk,&invert);
- if (errCnt==-1){ //if fatal error (or -1)
- PrintAndLog("no data found");
+ if (errCnt<0||BitLen<16){ //if fatal error (or -1)
+ // PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
return 0;
}
- PrintAndLog("Using Clock: %d and invert=%d",clk,invert);
- //PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum);
- //move BitStream back to GraphBuffer
- /*
- ClearGraph(0);
- for (i=0; i < bitnum; ++i){
- GraphBuffer[i]=BitStream[i];
- }
- GraphTraceLen=bitnum;
- RepaintGraphWindow();
- */
- //output
+ PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen);
+
+ //output
if (errCnt>0){
PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
}
PrintAndLog("ASK/Manchester decoded bitstream:");
// Now output the bitstream to the scrollback by line of 16 bits
- printBitStream(BitStream,BitLen);
+ setDemodBuf(BitStream,BitLen);
+ printDemodBuff();
uint64_t lo =0;
lo = Em410xDecode(BitStream,BitLen);
- printEM410x(lo);
-
+ if (lo>0){
+ //set GraphBuffer for clone or sim command
+ PrintAndLog("EM410x pattern found: ");
+ printEM410x(lo);
+ return 1;
+ }
+ //if (BitLen>16) return 1;
return 0;
}
//by marshmellow
-//biphase demod = 10 (or 01)=1 / 00 (or 11)=0
-
-
-//by marshmellow
-//manchester demod
+//manchester decode
//stricktly take 10 and 01 and convert to 0 and 1
int Cmdmandecoderaw(const char *Cmd)
{
int bitnum=0;
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
int high=0,low=0;
- for (;i<GraphTraceLen;++i){
- if (GraphBuffer[i]>high) high=GraphBuffer[i];
- else if(GraphBuffer[i]<low) low=GraphBuffer[i];
- BitStream[i]=GraphBuffer[i];
+ for (;i<DemodBufferLen;++i){
+ if (DemodBuffer[i]>high) high=DemodBuffer[i];
+ else if(DemodBuffer[i]<low) low=DemodBuffer[i];
+ BitStream[i]=DemodBuffer[i];
}
if (high>1 || low <0 ){
PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode");
return 0;
}
bitnum=i;
- errCnt=manrawdemod(BitStream,&bitnum);
+ errCnt=manrawdecode(BitStream,&bitnum);
+ if (errCnt>=20){
+ PrintAndLog("Too many errors: %d",errCnt);
+ return 0;
+ }
PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
printBitStream(BitStream,bitnum);
if (errCnt==0){
- //put back in graphbuffer
- ClearGraph(0);
- for (i=0; i<bitnum;++i){
- GraphBuffer[i]=BitStream[i];
- }
- GraphTraceLen=bitnum;
- RepaintGraphWindow();
uint64_t id = 0;
- id = Em410xDecode(BitStream,i);
+ id = Em410xDecode(BitStream,bitnum);
+ if (id>0) setDemodBuf(BitStream,bitnum);
printEM410x(id);
}
- return 0;
+ return 1;
}
+//by marshmellow
+//biphase decode
+//take 01 or 10 = 0 and 11 or 00 = 1
+//takes 1 argument "offset" default = 0 if 1 it will shift the decode by one bit
+// since it is not like manchester and doesn't have an incorrect bit pattern we
+// cannot determine if our decode is correct or if it should be shifted by one bit
+// the argument offset allows us to manually shift if the output is incorrect
+// (better would be to demod and decode at the same time so we can distinguish large
+// width waves vs small width waves to help the decode positioning) or askbiphdemod
+int CmdBiphaseDecodeRaw(const char *Cmd)
+{
+ int i = 0;
+ int errCnt=0;
+ int bitnum=0;
+ int offset=0;
+ int high=0, low=0;
+ sscanf(Cmd, "%i", &offset);
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ //get graphbuffer & high and low
+ for (;i<DemodBufferLen;++i){
+ if(DemodBuffer[i]>high)high=DemodBuffer[i];
+ else if(DemodBuffer[i]<low)low=DemodBuffer[i];
+ BitStream[i]=DemodBuffer[i];
+ }
+ if (high>1 || low <0){
+ PrintAndLog("Error: please raw demod the wave first then decode");
+ return 0;
+ }
+ bitnum=i;
+ errCnt=BiphaseRawDecode(BitStream,&bitnum, offset);
+ if (errCnt>=20){
+ PrintAndLog("Too many errors attempting to decode: %d",errCnt);
+ return 0;
+ }
+ PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
+ printBitStream(BitStream,bitnum);
+ PrintAndLog("\nif bitstream does not look right try offset=1");
+ return 1;
+}
+
+
//by marshmellow
//takes 2 arguments - clock and invert both as integers
//attempts to demodulate ask only
//prints binary found and saves in graphbuffer for further commands
int Cmdaskrawdemod(const char *Cmd)
{
- uint32_t i;
int invert=0;
int clk=0;
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
int BitLen = getFromGraphBuf(BitStream);
int errCnt=0;
errCnt = askrawdemod(BitStream, &BitLen,&clk,&invert);
- if (errCnt==-1){ //throw away static - allow 1 and -1 (in case of threshold command first)
+ if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
PrintAndLog("no data found");
return 0;
}
- PrintAndLog("Using Clock: %d and invert=%d",clk,invert);
+ PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
//PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum);
- //move BitStream back to GraphBuffer
-
- ClearGraph(0);
- for (i=0; i < BitLen; ++i){
- GraphBuffer[i]=BitStream[i];
- }
- GraphTraceLen=BitLen;
- RepaintGraphWindow();
+ //move BitStream back to DemodBuffer
+ setDemodBuf(BitStream,BitLen);
//output
if (errCnt>0){
// Now output the bitstream to the scrollback by line of 16 bits
printBitStream(BitStream,BitLen);
- return 0;
+ return 1;
}
int CmdAutoCorr(const char *Cmd)
bit ^= 1;
AppendGraph(0, clock, bit);
-// for (j = 0; j < (int)(clock/2); j++)
-// GraphBuffer[(i * clock) + j] = bit ^ 1;
-// for (j = (int)(clock/2); j < clock; j++)
-// GraphBuffer[(i * clock) + j] = bit;
+ // for (j = 0; j < (int)(clock/2); j++)
+ // GraphBuffer[(i * clock) + j] = bit ^ 1;
+ // for (j = (int)(clock/2); j < clock; j++)
+ // GraphBuffer[(i * clock) + j] = bit;
}
RepaintGraphWindow();
}
/* Print our clock rate */
+// uses data from graphbuffer
int CmdDetectClockRate(const char *Cmd)
{
- int clock = DetectClock(0);
- PrintAndLog("Auto-detected clock rate: %d", clock);
+ GetClock("",0,0);
+ //int clock = DetectASKClock(0);
+ //PrintAndLog("Auto-detected clock rate: %d", clock);
return 0;
}
-/*
-uint32_t bytebits_to_byte(uint8_t *src, int numbits)
-{
- uint32_t num = 0;
- for(int i = 0 ; i < numbits ; i++)
- {
- num = (num << 1) | (*src);
- src++;
- }
- return num;
-}
-*/
+
//by marshmellow
//fsk raw demod and print binary
-//takes 2 arguments - Clock and invert
-//defaults: clock = 50, invert=0
+//takes 4 arguments - Clock, invert, rchigh, rclow
+//defaults: clock = 50, invert=0, rchigh=10, rclow=8 (RF/10 RF/8 (fsk2a))
int CmdFSKrawdemod(const char *Cmd)
{
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
//set defaults
- uint8_t rfLen = 50;
- uint8_t invert=0;
+ int rfLen = 50;
+ int invert=0;
+ int fchigh=10;
+ int fclow=8;
//set options from parameters entered with the command
+ sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
+
if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
- rfLen=param_get8(Cmd, 0); //if rfLen option only is used
+ //rfLen=param_get8(Cmd, 0); //if rfLen option only is used
if (rfLen==1){
invert=1; //if invert option only is used
rfLen = 50;
} else if(rfLen==0) rfLen=50;
}
- if (strlen(Cmd)>2) {
- rfLen=param_get8(Cmd, 0); //if both options are used
- invert=param_get8(Cmd,1);
- }
- PrintAndLog("Args invert: %d \nClock:%d",invert,rfLen);
- uint32_t i=0;
+ PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow);
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
uint32_t BitLen = getFromGraphBuf(BitStream);
- int size = fskdemod(BitStream,BitLen,rfLen,invert);
-
- PrintAndLog("FSK decoded bitstream:");
- ClearGraph(0);
- for (i=0;i<size;++i){
- GraphBuffer[i]=BitStream[i];
+ int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
+ if (size>0){
+ PrintAndLog("FSK decoded bitstream:");
+ setDemodBuf(BitStream,size);
+
+ // Now output the bitstream to the scrollback by line of 16 bits
+ 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
+ printBitStream(BitStream,size);
+ } else{
+ PrintAndLog("no FSK data found");
}
- GraphTraceLen=size;
- RepaintGraphWindow();
-
- // Now output the bitstream to the scrollback by line of 16 bits
- if(size > (7*32)+2) size = (7*32)+2; //only output a max of 7 blocks of 32 bits most tags will have full bit stream inside that sample size
- printBitStream(BitStream,size);
return 0;
}
PrintAndLog("Error demoding fsk");
return 0;
}
+ if (hi2==0 && hi==0 && lo==0) return 0;
if (hi2 != 0){ //extra large HID tags
- PrintAndLog("TAG ID: %x%08x%08x (%d)",
+ PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
(unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
+ setDemodBuf(BitStream,BitLen);
+ return 1;
}
else { //standard HID tags <38 bits
//Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd
- uint8_t bitlen = 0;
+ uint8_t fmtLen = 0;
uint32_t fc = 0;
uint32_t cardnum = 0;
if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
lo2=lo2>>1;
idx3++;
}
- bitlen =idx3+19;
+ fmtLen =idx3+19;
fc =0;
cardnum=0;
- if(bitlen==26){
+ if(fmtLen==26){
cardnum = (lo>>1)&0xFFFF;
fc = (lo>>17)&0xFF;
}
- if(bitlen==37){
+ if(fmtLen==37){
cardnum = (lo>>1)&0x7FFFF;
fc = ((hi&0xF)<<12)|(lo>>20);
}
- if(bitlen==34){
+ if(fmtLen==34){
cardnum = (lo>>1)&0xFFFF;
fc= ((hi&1)<<15)|(lo>>17);
}
- if(bitlen==35){
+ if(fmtLen==35){
cardnum = (lo>>1)&0xFFFFF;
fc = ((hi&1)<<11)|(lo>>21);
}
}
else { //if bit 38 is not set then 37 bit format is used
- bitlen= 37;
+ fmtLen= 37;
fc =0;
cardnum=0;
- if(bitlen==37){
+ if(fmtLen==37){
cardnum = (lo>>1)&0x7FFFF;
fc = ((hi&0xF)<<12)|(lo>>20);
}
}
- PrintAndLog("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
+ PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
- (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum);
- return 0;
+ (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
+ setDemodBuf(BitStream,BitLen);
+ return 1;
}
return 0;
}
//raw fsk demod no manchester decoding no start bit finding just get binary from wave
//set defaults
int idx=0;
- //test samples are not just noise
- if (GraphTraceLen < 64) return 0;
+ //something in graphbuffer
+ if (GraphTraceLen < 65) return 0;
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
uint32_t BitLen = getFromGraphBuf(BitStream);
//get binary from fsk wave
+ // PrintAndLog("DEBUG: got buff");
idx = IOdemodFSK(BitStream,BitLen);
if (idx<0){
- PrintAndLog("Error demoding fsk");
+ //PrintAndLog("Error demoding fsk");
return 0;
}
+ // PrintAndLog("DEBUG: Got IOdemodFSK");
if (idx==0){
- PrintAndLog("IO Prox Data not found - FSK Data:");
- printBitStream(BitStream,92);
+ //PrintAndLog("IO Prox Data not found - FSK Data:");
+ //if (BitLen > 92) printBitStream(BitStream,92);
+ return 0;
}
//Index map
//0 10 20 30 40 50 60
//
//XSF(version)facility:codeone+codetwo (raw)
//Handle the data
-
+ if (idx+64>BitLen) return 0;
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]);
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]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d",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]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d",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]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d",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]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d",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]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d%d",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]);
+ 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]);
+ 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]);
+ 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]);
+ 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]);
+ 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]);
uint32_t code = bytebits_to_byte(BitStream+idx,32);
uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
- short version = bytebits_to_byte(BitStream+idx+27,8); //14,4
- uint8_t facilitycode = bytebits_to_byte(BitStream+idx+19,8) ;
+ uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
+ uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
-
- PrintAndLog("XSF(%02d)%02x:%d (%08x%08x)",version,facilitycode,number,code,code2);
- return 0;
+ PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);
+ int i;
+ for (i=0;i<64;++i)
+ DemodBuffer[i]=BitStream[idx++];
+
+ DemodBufferLen=64;
+ return 1;
}
int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating
{
return 0;
}
+int CmdDetectNRZpskClockRate(const char *Cmd)
+{
+ GetNRZpskClock("",0,0);
+ return 0;
+}
+
+int PSKnrzDemod(const char *Cmd){
+ int invert=0;
+ int clk=0;
+ sscanf(Cmd, "%i %i", &clk, &invert);
+ if (invert != 0 && invert != 1) {
+ PrintAndLog("Invalid argument: %s", Cmd);
+ return -1;
+ }
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ int BitLen = getFromGraphBuf(BitStream);
+ int errCnt=0;
+ errCnt = pskNRZrawDemod(BitStream, &BitLen,&clk,&invert);
+ if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
+ //PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+ return -1;
+ }
+ PrintAndLog("Tried PSK/NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+
+ //prime demod buffer for output
+ setDemodBuf(BitStream,BitLen);
+ return errCnt;
+}
+// Indala 26 bit decode
+// by marshmellow
+// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
+int CmdIndalaDecode(const char *Cmd)
+{
+
+ int ans=PSKnrzDemod(Cmd);
+ if (ans < 0){
+ PrintAndLog("Error1: %d",ans);
+ return 0;
+ }
+ uint8_t invert=0;
+ ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
+ if (ans < 1) {
+ PrintAndLog("Error2: %d",ans);
+ return -1;
+ }
+ char showbits[251];
+ if(invert==1) PrintAndLog("Had to invert bits");
+ //convert UID to HEX
+ uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
+ int idx;
+ uid1=0;
+ uid2=0;
+ PrintAndLog("BitLen: %d",DemodBufferLen);
+ if (DemodBufferLen==64){
+ for( idx=0; idx<64; idx++) {
+ uid1=(uid1<<1)|(uid2>>31);
+ if (DemodBuffer[idx] == 0) {
+ uid2=(uid2<<1)|0;
+ showbits[idx]='0';
+ } else {
+ uid2=(uid2<<1)|1;
+ showbits[idx]='1';
+ }
+ }
+ showbits[idx]='\0';
+ PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
+ }
+ else {
+ uid3=0;
+ uid4=0;
+ uid5=0;
+ uid6=0;
+ uid7=0;
+ for( idx=0; idx<DemodBufferLen; idx++) {
+ uid1=(uid1<<1)|(uid2>>31);
+ uid2=(uid2<<1)|(uid3>>31);
+ uid3=(uid3<<1)|(uid4>>31);
+ uid4=(uid4<<1)|(uid5>>31);
+ uid5=(uid5<<1)|(uid6>>31);
+ uid6=(uid6<<1)|(uid7>>31);
+ if (DemodBuffer[idx] == 0) {
+ uid7=(uid7<<1)|0;
+ showbits[idx]='0';
+ }
+ else {
+ uid7=(uid7<<1)|1;
+ showbits[idx]='1';
+ }
+ }
+ showbits[idx]='\0';
+ PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
+ }
+ return 1;
+}
+
+/*
+//by marshmellow (attempt to get rid of high immediately after a low)
+void pskCleanWave2(uint8_t *bitStream, int bitLen)
+{
+ int i;
+ int low=128;
+ int gap = 4;
+ // int loopMax = 2048;
+ int newLow=0;
+
+ for (i=0; i<bitLen; ++i)
+ if (bitStream[i]<low) low=bitStream[i];
+
+ low = (int)(((low-128)*.80)+128);
+ PrintAndLog("low: %d",low);
+ for (i=0; i<bitLen; ++i){
+ if (newLow==1){
+ bitStream[i]=low+5;
+ gap--;
+ if (gap==0){
+ newLow=0;
+ gap=4;
+ }
+ }
+ if (bitStream[i]<=low) newLow=1;
+ }
+ return;
+}
+*/
+int CmdPskClean(const char *Cmd)
+{
+ uint8_t bitStream[MAX_GRAPH_TRACE_LEN]={0};
+ int bitLen = getFromGraphBuf(bitStream);
+ pskCleanWave(bitStream, bitLen);
+ setGraphBuf(bitStream, bitLen);
+ return 0;
+}
+
+//by marshmellow
+//takes 2 arguments - clock and invert both as integers
+//attempts to demodulate ask only
+//prints binary found and saves in graphbuffer for further commands
+int CmdpskNRZrawDemod(const char *Cmd)
+{
+ int errCnt= PSKnrzDemod(Cmd);
+ //output
+ if (errCnt<0) return 0;
+ if (errCnt>0){
+ PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+ }
+ PrintAndLog("PSK or NRZ demoded bitstream:");
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printDemodBuff();
+
+ return 1;
+}
+
+
+
int CmdGrid(const char *Cmd)
{
sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
RepaintGraphWindow();
return 0;
}
+int CmdRtrim(const char *Cmd)
+{
+ int ds = atoi(Cmd);
+
+ GraphTraceLen = ds;
+
+ RepaintGraphWindow();
+ return 0;
+}
/*
* Manchester demodulate a bitstream. The bitstream needs to be already in
if (max != min) {
for (i = 0; i < GraphTraceLen; ++i) {
- GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 1000 /
- (max - min);
+ GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
+ (max - min);
+ //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
}
}
RepaintGraphWindow();
{"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional[clock will try Auto-detect])"},
{"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK tags and output binary (args optional[clock will try Auto-detect])"},
{"autocorr", CmdAutoCorr, 1, "<window length> -- Autocorrelation over window"},
+ {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] Biphase decode binary stream already in graph buffer (offset = bit to start decode from)"},
{"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
{"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"},
{"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
{"dec", CmdDec, 1, "Decimate samples"},
- {"detectclock", CmdDetectClockRate, 1, "Detect clock rate"},
+ {"detectclock", CmdDetectClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
{"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"},
{"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK using raw"},
{"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox FSK using raw"},
- {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] Demodulate graph window from FSK to binary (clock = 64 or 50)(invert = 1 or 0)"},
+ {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to binary (clock = 50)(invert = 1 or 0)(rchigh = 10)(rclow=8)"},
{"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
{"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
{"hide", CmdHide, 1, "Hide graph window"},
{"hpf", CmdHpf, 1, "Remove DC offset from trace"},
{"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
{"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
+ {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
{"mandemod", CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"},
{"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream already in graph buffer"},
{"manmod", CmdManchesterMod, 1, "[clock rate] -- Manchester modulate a binary stream"},
- {"norm", CmdNorm, 1, "Normalize max/min to +/-500"},
+ {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
{"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
+ {"pskclean", CmdPskClean, 1, "Attempt to clean psk wave"},
+ {"pskdetectclock",CmdDetectNRZpskClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
+ {"pskindalademod",CmdIndalaDecode, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate psk indala tags and output ID binary & hex (args optional[clock will try Auto-detect])"},
+ {"psknrzrawdemod",CmdpskNRZrawDemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate psk or nrz tags and output binary (args optional[clock will try Auto-detect])"},
{"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window"},
- {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
{"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
{"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
{"threshold", CmdThreshold, 1, "<threshold> -- Maximize/minimize every value in the graph window depending on threshold"},
- {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
{"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
+ {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
+ {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
{NULL, NULL, 0, NULL}
};
projects / proxmark3-svn / blobdiff