#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;
int CmdEm410xDecode(const char *Cmd)
{
uint64_t id=0;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- uint32_t i=0;
- i=getFromGraphBuf(BitStream);
- 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;
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<0){ //if fatal error (or -1)
+ 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;
}
- if (BitLen<16) return 0;
PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen);
//output
}
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);
if (lo>0){
//set GraphBuffer for clone or sim command
- setGraphBuf(BitStream,BitLen);
PrintAndLog("EM410x pattern found: ");
printEM410x(lo);
return 1;
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");
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 1;
sscanf(Cmd, "%i", &offset);
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
//get graphbuffer & high and low
- 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 decode");
//prints binary found and saves in graphbuffer for further commands
int Cmdaskrawdemod(const char *Cmd)
{
-
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)
+ errCnt = askrawdemod(BitStream, &BitLen,&clk,&invert);
+ if (errCnt==-1||BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
PrintAndLog("no data found");
return 0;
}
- if (BitLen<16) return 0;
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
- setGraphBuf(BitStream, BitLen);
-
+ //move BitStream back to DemodBuffer
+ setDemodBuf(BitStream,BitLen);
+
+ //output
if (errCnt>0){
PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
}
-
PrintAndLog("ASK demoded bitstream:");
-
// Now output the bitstream to the scrollback by line of 16 bits
printBitStream(BitStream,BitLen);
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;
}
RepaintGraphWindow();
int CmdDetectClockRate(const char *Cmd)
{
GetClock("",0,0);
+ //int clock = DetectASKClock(0);
+ //PrintAndLog("Auto-detected clock rate: %d", clock);
return 0;
}
} else if(rfLen==0) rfLen=50;
}
PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow);
- uint32_t i=0;
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
uint32_t BitLen = getFromGraphBuf(BitStream);
int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
if (size>0){
PrintAndLog("FSK decoded bitstream:");
- ClearGraph(0);
- for (i=0;i<size;++i){
- GraphBuffer[i]=BitStream[i];
- }
- GraphTraceLen=size;
- RepaintGraphWindow();
+ 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
}
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);
- setGraphBuf(BitStream,BitLen);
+ setDemodBuf(BitStream,BitLen);
return 1;
}
else { //standard HID tags <38 bits
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) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
- setGraphBuf(BitStream,BitLen);
+ setDemodBuf(BitStream,BitLen);
return 1;
}
return 0;
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:%05d (%08x%08x)",version,facilitycode,number,code,code2);
- setGraphBuf(BitStream,BitLen);
+ 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
PrintAndLog("actual data bits start at sample %d", maxPos);
PrintAndLog("length %d/%d", highLen, lowLen);
- uint8_t bits[46] = {0x00};
+ uint8_t bits[46];
+ bits[sizeof(bits)-1] = '\0';
// find bit pairs and manchester decode them
for (i = 0; i < arraylen(bits) - 1; ++i) {
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);
int CmdSamples(const char *Cmd)
{
- uint8_t got[40000] = {0x00};
-
- int n = strtol(Cmd, NULL, 0);
- if (n == 0)
- n = 20000;
-
- if (n > sizeof(got))
- n = sizeof(got);
+ int cnt = 0;
+ int n;
+ uint8_t got[40000];
+
+ n = strtol(Cmd, NULL, 0);
+ if (n == 0) n = 6000;
+ if (n > sizeof(got)) n = sizeof(got);
- PrintAndLog("Reading %d samples from device memory\n", n);
+ PrintAndLog("Reading %d samples\n", n);
GetFromBigBuf(got,n,0);
WaitForResponse(CMD_ACK,NULL);
- for (int j = 0; j < n; ++j) {
- GraphBuffer[j] = ((int)got[j]) - 128;
+ for (int j = 0; j < n; j++) {
+ GraphBuffer[cnt++] = ((int)got[j]) - 128;
}
+
+ PrintAndLog("Done!\n");
GraphTraceLen = n;
RepaintGraphWindow();
return 0;
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();
{"help", CmdHelp, 1, "This help"},
{"amp", CmdAmp, 1, "Amplify peaks"},
{"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"},
- {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert <0|1>] -- Attempt to demodulate ASK/Manchester tags and output binary"},
- {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert <0|1>] -- Attempt to demodulate ASK tags and output binary"},
+ {"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"},
- {"detectaskclock",CmdDetectClockRate, 1, "Detect ASK 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"},
{"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