ADD: added the crc8legic to Lua. call it with core.crc8legic

[proxmark3-svn] / client / cmddata.c

diff --git a/client/cmddata.c b/client/cmddata.c
index e2e2ca6dd30d763a279cbf1746651300fd640762..2c12e2bb9391da3248f6cc720656c2ff7d51f5c0 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -23,10 +23,12 @@
 #include "lfdemod.h"
 #include "usb_cmd.h"
 #include "crc.h"
 #include "lfdemod.h"
 #include "usb_cmd.h"
 #include "crc.h"

+#include "crc16.h"
+#include "loclass/cipherutils.h"

 
 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
 
 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];

-uint8_t g_debugMode;
-int DemodBufferLen;
+uint8_t g_debugMode=0;
+size_t DemodBufferLen=0;

 static int CmdHelp(const char *Cmd);
 
 //set the demod buffer with given array of binary (one bit per byte)
 static int CmdHelp(const char *Cmd);
 
 //set the demod buffer with given array of binary (one bit per byte)


@@ -55,6 +57,16 @@ int CmdSetDebugMode(const char *Cmd)
        return 1;
 }
 
        return 1;
 }
 

+int usage_data_printdemodbuf(){
+               PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
+       PrintAndLog("Options:");
+       PrintAndLog("       h          This help");
+       PrintAndLog("       x          output in hex (omit for binary output)");
+       PrintAndLog("       o <offset> enter offset in # of bits");
+               PrintAndLog("       l <length> enter length to print in # of bits or hex characters respectively");
+       return 0;       
+}
+

 //by marshmellow
 void printDemodBuff(void)
 {
 //by marshmellow
 void printDemodBuff(void)
 {


@@ -73,23 +85,56 @@ void printDemodBuff(void)
 
 int CmdPrintDemodBuff(const char *Cmd)
 {
 
 int CmdPrintDemodBuff(const char *Cmd)
 {

-       char hex;
-       char printBuff[512]={0x00};
-       uint8_t numBits = DemodBufferLen & 0xFFFC;
-       sscanf(Cmd, "%c", &hex);
-       if (hex == 'h'){
-               PrintAndLog("Usage: data printdemodbuffer [x]");
-               PrintAndLog("Options:        ");
-               PrintAndLog("       h       This help");
-               PrintAndLog("       x       output in hex (omit for binary output)");
-               return 0;
+       char hex[512]={0x00};
+       bool hexMode = false;
+       bool errors = false;
+       uint32_t offset = 0; //could be size_t but no param_get16...
+       uint32_t length = 512;
+       char cmdp = 0;
+       while(param_getchar(Cmd, cmdp) != 0x00)
+       {
+               switch(param_getchar(Cmd, cmdp))
+               {
+               case 'h':
+               case 'H':
+                       return usage_data_printdemodbuf();
+               case 'x':
+               case 'X':
+                       hexMode = true;
+                       cmdp++;
+                       break;
+               case 'o':
+               case 'O':
+                       offset = param_get32ex(Cmd, cmdp+1, 0, 10);
+                       if (!offset) errors = true;
+                       cmdp += 2;
+                       break;
+               case 'l':
+               case 'L':
+                       length = param_get32ex(Cmd, cmdp+1, 512, 10);
+                       if (!length) errors = true;
+                       cmdp += 2;
+                       break;
+               default:
+                       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+                       errors = true;
+                       break;
+               }
+               if(errors) break;

        }
        }

-       if (hex == 'x'){
-               numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
+       //Validations
+       if(errors) return usage_data_printdemodbuf();
+       length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length; 
+       int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
+
+       if (hexMode){
+               char *buf = (char *) (DemodBuffer + offset);
+               numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
+               numBits = binarraytohex(hex, buf, numBits);

                if (numBits==0) return 0;
                if (numBits==0) return 0;

-               PrintAndLog("DemodBuffer: %s",printBuff);
+               PrintAndLog("DemodBuffer: %s",hex);             

        } else {
        } else {

-               printDemodBuff();
+               PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));

        }
        return 1;
 }
        }
        return 1;
 }


@@ -208,22 +253,35 @@ void printEM410x(uint32_t hi, uint64_t id)
        return;
 }
 
        return;
 }
 

-
-int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo)
+int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )

 {
 {

-       int ans = ASKmanDemod(Cmd, FALSE, FALSE);
-       if (!ans) return 0;
-
-       size_t idx=0;
-       if (Em410xDecode(DemodBuffer,(size_t *) &DemodBufferLen, &idx, hi, lo)){
+       size_t idx = 0;
+       size_t BitLen = DemodBufferLen;
+       uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+       memcpy(BitStream, DemodBuffer, BitLen); 
+       if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
+               //set GraphBuffer for clone or sim command
+               setDemodBuf(BitStream, BitLen, idx);

                if (g_debugMode){
                if (g_debugMode){

-                       PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, DemodBufferLen);
+                       PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);

                        printDemodBuff();
                }
                        printDemodBuff();
                }

+               if (verbose){
+                       PrintAndLog("EM410x pattern found: ");
+                       printEM410x(*hi, *lo);
+               }

                return 1;
        }
        return 0;
 }
                return 1;
        }
        return 0;
 }

+
+int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
+{
+       bool st = TRUE;
+       if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
+       return AskEm410xDecode(verbose, hi, lo);
+}
+

 //by marshmellow
 //takes 3 arguments - clock, invert and maxErr as integers
 //attempts to demodulate ask while decoding manchester
 //by marshmellow
 //takes 3 arguments - clock, invert and maxErr as integers
 //attempts to demodulate ask while decoding manchester


@@ -244,28 +302,27 @@ int CmdAskEM410xDemod(const char *Cmd)
                PrintAndLog("          : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
                return 0;
        }
                PrintAndLog("          : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
                return 0;
        }

-       uint32_t hi = 0;

        uint64_t lo = 0;
        uint64_t lo = 0;

-       if (AskEm410xDemod(Cmd, &hi, &lo)) {
-               PrintAndLog("EM410x pattern found: ");
-               printEM410x(hi, lo);
-               return 1;
-       }
-       return 0;
+       uint32_t hi = 0;
+       return AskEm410xDemod(Cmd, &hi, &lo, true);

 }
 
 }
 

-int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch)
-{
+//by marshmellow
+//Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
+//   (amp may not be needed anymore)
+//verbose will print results and demoding messages
+//emSearch will auto search for EM410x format in bitstream
+//askType switches decode: ask/raw = 0, ask/manchester = 1 
+int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {

        int invert=0;
        int clk=0;
        int maxErr=100;
        int invert=0;
        int clk=0;
        int maxErr=100;

-       int maxLen=512*64;
-       //param_getdec(Cmd, 0, &clk);
-       //param_getdec(Cmd, 1, &invert);
-       //maxErr = param_get32ex(Cmd, 2, 0xFFFFFFFF, 10);
-       //if (maxErr == 0xFFFFFFFF) maxErr=100;
+       int maxLen=0;
+       uint8_t askAmp = 0;
+       char amp = param_getchar(Cmd, 0);

        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};

-       sscanf(Cmd, "%i %i %i %i", &clk, &invert, &maxErr, &maxLen);
+       sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
+       if (!maxLen) maxLen = BIGBUF_SIZE;

        if (invert != 0 && invert != 1) {
                PrintAndLog("Invalid argument: %s", Cmd);
                return 0;
        if (invert != 0 && invert != 1) {
                PrintAndLog("Invalid argument: %s", Cmd);
                return 0;


@@ -274,12 +331,21 @@ int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch)
                invert=1;
                clk=0;
        }
                invert=1;
                clk=0;
        }

+       if (amp == 'a' || amp == 'A') askAmp=1; 

        size_t BitLen = getFromGraphBuf(BitStream);
        if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
        size_t BitLen = getFromGraphBuf(BitStream);
        if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);

-       if (!BitLen) return 0;
+       if (BitLen<255) return 0;

        if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
        if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;

-       int errCnt = askmandemod(BitStream, &BitLen, &clk, &invert, maxErr);
-       if (errCnt<0||BitLen<16){  //if fatal error (or -1)
+       int foundclk = 0;
+       bool st = false;
+       if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
+       if (st) {
+               *stCheck = st;
+               clk = (clk == 0) ? foundclk : clk;
+               if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
+       }
+       int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
+       if (errCnt<0 || BitLen<16){  //if fatal error (or -1)

                if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
                return 0;
        }
                if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
                return 0;
        }


@@ -290,45 +356,42 @@ int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch)
        if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
 
        //output
        if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
 
        //output

-       if (errCnt>0){
-               if (verbose || g_debugMode) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
-       }
-       if (verbose || g_debugMode) PrintAndLog("ASK/Manchester decoded bitstream:");
-       // Now output the bitstream to the scrollback by line of 16 bits

        setDemodBuf(BitStream,BitLen,0);
        setDemodBuf(BitStream,BitLen,0);

-       if (verbose || g_debugMode) printDemodBuff();
-       uint64_t lo =0;
-       uint32_t hi =0;
-       size_t idx=0;
+       if (verbose || g_debugMode){
+               if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
+               if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
+               else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
+               // Now output the bitstream to the scrollback by line of 16 bits
+               printDemodBuff();
+               
+       }
+       uint64_t lo = 0;
+       uint32_t hi = 0;

        if (emSearch){
        if (emSearch){

-               if (Em410xDecode(BitStream, &BitLen, &idx, &hi, &lo)){
-                       //set GraphBuffer for clone or sim command
-                       setDemodBuf(BitStream, BitLen, idx);
-                       if (g_debugMode){
-                               PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
-                               printDemodBuff();
-                       }
-                       if (verbose) PrintAndLog("EM410x pattern found: ");
-                       if (verbose) printEM410x(hi, lo);
-                       return 1;
-               }
+               AskEm410xDecode(true, &hi, &lo);

        }
        return 1;
 }
        }
        return 1;
 }

+int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
+       bool st = false;
+       return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
+}

 
 //by marshmellow
 
 //by marshmellow

-//takes 3 arguments - clock, invert, maxErr as integers
+//takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'

 //attempts to demodulate ask while decoding manchester
 //prints binary found and saves in graphbuffer for further commands
 int Cmdaskmandemod(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);
 //attempts to demodulate ask while decoding manchester
 //prints binary found and saves in graphbuffer for further commands
 int Cmdaskmandemod(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);

-       if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  data rawdemod am [clock] <0|1> [maxError] [setSmplLen]");
-               PrintAndLog("     [set clock as integer] optional, if not set, autodetect.");
-               PrintAndLog("     <invert>, 1 for invert output");
-               PrintAndLog("     [set maximum allowed errors], default = 100.");
-               PrintAndLog("     [set maximum Samples to read], default = 32768 (512 bits at rf/64).");
+       if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
+               PrintAndLog("     ['s'] optional, check for Sequence Terminator");
+               PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
+               PrintAndLog("     <invert>, 1 to invert output");
+               PrintAndLog("     [set maximum allowed errors], default = 100");
+               PrintAndLog("     [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
+               PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");

                PrintAndLog("");
                PrintAndLog("    sample: data rawdemod am        = demod an ask/manchester tag from GraphBuffer");
                PrintAndLog("          : data rawdemod am 32     = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
                PrintAndLog("");
                PrintAndLog("    sample: data rawdemod am        = demod an ask/manchester tag from GraphBuffer");
                PrintAndLog("          : data rawdemod am 32     = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");


@@ -337,7 +400,13 @@ int Cmdaskmandemod(const char *Cmd)
                PrintAndLog("          : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
                return 0;
        }
                PrintAndLog("          : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
                return 0;
        }

-       return ASKmanDemod(Cmd, TRUE, TRUE);
+       bool st = TRUE;
+       if (Cmd[0]=='s') 
+               return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
+       else if (Cmd[1] == 's')
+               return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
+       else
+       return ASKDemod(Cmd, TRUE, TRUE, 1);

 }
 
 //by marshmellow
 }
 
 //by marshmellow


@@ -348,12 +417,15 @@ int Cmdmandecoderaw(const char *Cmd)
        int i =0;
        int errCnt=0;
        size_t size=0;
        int i =0;
        int errCnt=0;
        size_t size=0;

-       size_t maxErr = 20;
+       int invert=0;
+       int maxErr = 20;

        char cmdp = param_getchar(Cmd, 0);
        char cmdp = param_getchar(Cmd, 0);

-       if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  data manrawdecode");
+       if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  data manrawdecode [invert] [maxErr]");

                PrintAndLog("     Takes 10 and 01 and converts to 0 and 1 respectively");
                PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");
                PrintAndLog("     Takes 10 and 01 and converts to 0 and 1 respectively");
                PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");

+               PrintAndLog("  [invert]  invert output");               
+               PrintAndLog("  [maxErr]  set number of errors allowed (default = 20)");         

                PrintAndLog("");
                PrintAndLog("    sample: data manrawdecode   = decode manchester bitstream from the demodbuffer");
                return 0;
                PrintAndLog("");
                PrintAndLog("    sample: data manrawdecode   = decode manchester bitstream from the demodbuffer");
                return 0;


@@ -366,12 +438,14 @@ int Cmdmandecoderaw(const char *Cmd)
                else if(DemodBuffer[i]<low) low=DemodBuffer[i];
                BitStream[i]=DemodBuffer[i];
        }
                else if(DemodBuffer[i]<low) low=DemodBuffer[i];
                BitStream[i]=DemodBuffer[i];
        }

-       if (high>1 || low <0 ){
+       if (high>7 || low <0 ){

                PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
                return 0;
        }
                PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
                return 0;
        }

+
+       sscanf(Cmd, "%i %i", &invert, &maxErr);

        size=i;
        size=i;

-       errCnt=manrawdecode(BitStream, &size);
+       errCnt=manrawdecode(BitStream, &size, invert);

        if (errCnt>=maxErr){
                PrintAndLog("Too many errors: %d",errCnt);
                return 0;
        if (errCnt>=maxErr){
                PrintAndLog("Too many errors: %d",errCnt);
                return 0;


@@ -445,81 +519,25 @@ int CmdBiphaseDecodeRaw(const char *Cmd)
        return 1;
 }
 
        return 1;
 }
 

-//by marshmellow
-//takes 4 arguments - clock, invert, maxErr as integers and amplify as char
-//attempts to demodulate ask only
-//prints binary found and saves in graphbuffer for further commands
-int ASKrawDemod(const char *Cmd, bool verbose)
-{
-       int invert=0;
-       int clk=0;
-       int maxErr=100;
-       uint8_t askAmp = 0;
-       char amp = param_getchar(Cmd, 0);
-       uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-       sscanf(Cmd, "%i %i %i %c", &clk, &invert, &maxErr, &amp);
-       if (invert != 0 && invert != 1) {
-               if (verbose || g_debugMode) PrintAndLog("Invalid argument: %s", Cmd);
-               return 0;
-       }
-       if (clk==1){
-               invert=1;
-               clk=0;
-       }
-       if (amp == 'a' || amp == 'A') askAmp=1; 
-       size_t BitLen = getFromGraphBuf(BitStream);
-       if (BitLen==0) return 0;
-       int errCnt = askrawdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp);
-       if (errCnt==-1||BitLen<16){  //throw away static - allow 1 and -1 (in case of threshold command first)
-               if (verbose || g_debugMode) PrintAndLog("no data found");
-               if (g_debugMode) PrintAndLog("errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
-               return 0;
-       }
-       if (errCnt>maxErr) {
-               if (g_debugMode) 
-                       PrintAndLog("Too many errors found, errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
-               return 0;
-       }
-       if (verbose || g_debugMode) 
-               PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d", clk, invert, BitLen);
-       
-       //move BitStream back to DemodBuffer
-       setDemodBuf(BitStream,BitLen,0);
-
-       //output
-       if (errCnt>0 && (verbose || g_debugMode)){
-               PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d", errCnt);
-       }
-       if (verbose || g_debugMode){
-               PrintAndLog("ASK demoded bitstream:");
-               // Now output the bitstream to the scrollback by line of 16 bits
-               printDemodBuff();
-       } 
-       return 1;
-}
-

 //by marshmellow
 // - ASK Demod then Biphase decode GraphBuffer samples
 int ASKbiphaseDemod(const char *Cmd, bool verbose)
 {
        //ask raw demod GraphBuffer first
 //by marshmellow
 // - ASK Demod then Biphase decode GraphBuffer samples
 int ASKbiphaseDemod(const char *Cmd, bool verbose)
 {
        //ask raw demod GraphBuffer first

-       int offset=0, clk=0, invert=0, maxErr=0, ans=0;
-       ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
-       if (ans>0)
-               ans = ASKrawDemod(Cmd+1, FALSE);
-       else
-               ans = ASKrawDemod(Cmd, FALSE);
-       if (!ans) {
-               if (g_debugMode || verbose) PrintAndLog("Error AskrawDemod: %d", ans);
-               return 0;
-       }
-
-       //attempt to Biphase decode DemodBuffer
-       size_t size = DemodBufferLen;
+       int offset=0, clk=0, invert=0, maxErr=0;
+       sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
+       

        uint8_t BitStream[MAX_DEMOD_BUF_LEN];
        uint8_t BitStream[MAX_DEMOD_BUF_LEN];

-       memcpy(BitStream, DemodBuffer, DemodBufferLen); 
+       size_t size = getFromGraphBuf(BitStream);         
+       //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
+       int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);  
+       if ( errCnt < 0 || errCnt > maxErr ) {   
+               if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);  
+                       return 0;  
+       } 

 
 

-       int errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
+       //attempt to Biphase decode BitStream
+       errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);

        if (errCnt < 0){
                if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
                return 0;
        if (errCnt < 0){
                if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
                return 0;


@@ -531,7 +549,7 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
        //success set DemodBuffer and return
        setDemodBuf(BitStream, size, 0);
        if (g_debugMode || verbose){
        //success set DemodBuffer and return
        setDemodBuf(BitStream, size, 0);
        if (g_debugMode || verbose){

-               PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
+               PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);

                printDemodBuff();
        }
        return 1;
                printDemodBuff();
        }
        return 1;


@@ -540,12 +558,13 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
 int Cmdaskbiphdemod(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);
 int Cmdaskbiphdemod(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);

-       if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  data rawdemod ab [offset] [clock] <invert> [maxError] <amplify>");
+       if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");

                PrintAndLog("     [offset], offset to begin biphase, default=0");
                PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
                PrintAndLog("     <invert>, 1 to invert output");
                PrintAndLog("     [set maximum allowed errors], default = 100");
                PrintAndLog("     [offset], offset to begin biphase, default=0");
                PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
                PrintAndLog("     <invert>, 1 to invert output");
                PrintAndLog("     [set maximum allowed errors], default = 100");

+               PrintAndLog("     [set maximum Samples to read], default = 32768 (512 bits at rf/64)");

                PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
                PrintAndLog("     NOTE: <invert>  can be entered as second or third argument");
                PrintAndLog("     NOTE: <amplify> can be entered as first, second or last argument");
                PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
                PrintAndLog("     NOTE: <invert>  can be entered as second or third argument");
                PrintAndLog("     NOTE: <amplify> can be entered as first, second or last argument");


@@ -553,13 +572,13 @@ int Cmdaskbiphdemod(const char *Cmd)
                PrintAndLog("");
                PrintAndLog("     NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
                PrintAndLog("");
                PrintAndLog("");
                PrintAndLog("     NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
                PrintAndLog("");

-               PrintAndLog("    sample: data rawdemod ab            = demod an ask/biph tag from GraphBuffer");
-               PrintAndLog("          : data rawdemod ab a          = demod an ask/biph tag from GraphBuffer, amplified");
-               PrintAndLog("          : data rawdemod ab 1 32       = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
-               PrintAndLog("          : data rawdemod ab 0 32 1     = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
-               PrintAndLog("          : data rawdemod ab 0 1        = demod an ask/biph tag from GraphBuffer while inverting data");
-               PrintAndLog("          : data rawdemod ab 0 64 1 0   = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
-               PrintAndLog("          : data rawdemod ab 0 64 1 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
+               PrintAndLog("    sample: data rawdemod ab              = demod an ask/biph tag from GraphBuffer");
+               PrintAndLog("          : data rawdemod ab 0 a          = demod an ask/biph tag from GraphBuffer, amplified");
+               PrintAndLog("          : data rawdemod ab 1 32         = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
+               PrintAndLog("          : data rawdemod ab 0 32 1       = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
+               PrintAndLog("          : data rawdemod ab 0 1          = demod an ask/biph tag from GraphBuffer while inverting data");
+               PrintAndLog("          : data rawdemod ab 0 64 1 0     = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
+               PrintAndLog("          : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");

                return 0;
        }
        return ASKbiphaseDemod(Cmd, TRUE);
                return 0;
        }
        return ASKbiphaseDemod(Cmd, TRUE);


@@ -594,7 +613,7 @@ int CmdG_Prox_II_Demod(const char *Cmd)
                if ((idx+1) % 5 == 0){
                        //spacer bit - should be 0
                        if (DemodBuffer[startIdx+idx] != 0) {
                if ((idx+1) % 5 == 0){
                        //spacer bit - should be 0
                        if (DemodBuffer[startIdx+idx] != 0) {

-                               if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
+                               if (g_debugMode) PrintAndLog("Error spacer not 0: %u, pos: %u", (unsigned int)DemodBuffer[startIdx+idx],(unsigned int)(startIdx+idx));

                                return 0;
                        }
                        continue;
                                return 0;
                        }
                        continue;


@@ -609,14 +628,14 @@ int CmdG_Prox_II_Demod(const char *Cmd)
                ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
                bitCnt++;
                if (bitCnt % 8 == 0){
                ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
                bitCnt++;
                if (bitCnt % 8 == 0){

-                       if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
+                       if (g_debugMode) PrintAndLog("byte %u: %02x", (unsigned int)ByteCnt, ByteStream[ByteCnt]);

                        bitCnt=0;
                        ByteCnt++;
                }
        }
        for (uint8_t i = 0; i < ByteCnt; i++){
                ByteStream[i] ^= xorKey; //xor
                        bitCnt=0;
                        ByteCnt++;
                }
        }
        for (uint8_t i = 0; i < ByteCnt; i++){
                ByteStream[i] ^= xorKey; //xor

-               if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
+               if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)i, ByteStream[i]);

        }
        //now ByteStream contains 64 bytes of decrypted raw tag data
        // 
        }
        //now ByteStream contains 64 bytes of decrypted raw tag data
        // 


@@ -643,27 +662,54 @@ int CmdG_Prox_II_Demod(const char *Cmd)
        return 1;
 }
 
        return 1;
 }
 

-//by marshmellow - see ASKrawDemod
+//by marshmellow
+//see ASKDemod for what args are accepted
+int CmdVikingDemod(const char *Cmd)
+{
+       if (!ASKDemod(Cmd, false, false, 1)) {
+               if (g_debugMode) PrintAndLog("ASKDemod failed");
+               return 0;
+       }
+       size_t size = DemodBufferLen;
+       //call lfdemod.c demod for Viking
+       int ans = VikingDemod_AM(DemodBuffer, &size);
+       if (ans < 0) {
+               if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
+               return 0;
+       }
+       //got a good demod
+       uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
+       uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
+       uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
+       uint8_t  checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
+       PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
+       PrintAndLog("Raw: %08X%08X", raw1,raw2);
+       setDemodBuf(DemodBuffer+ans, 64, 0);
+       return 1;
+}
+
+//by marshmellow - see ASKDemod

 int Cmdaskrawdemod(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);
 int Cmdaskrawdemod(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);

-       if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  data rawdemod ar [clock] <invert> [maxError] [amplify]");
+       if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");

                PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
                PrintAndLog("     <invert>, 1 to invert output");
                PrintAndLog("     [set maximum allowed errors], default = 100");
                PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
                PrintAndLog("     <invert>, 1 to invert output");
                PrintAndLog("     [set maximum allowed errors], default = 100");

+               PrintAndLog("     [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");

                PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
                PrintAndLog("");
                PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
                PrintAndLog("");

-               PrintAndLog("    sample: data rawdemod ar          = demod an ask tag from GraphBuffer");
-               PrintAndLog("          : data rawdemod ar a        = demod an ask tag from GraphBuffer, amplified");
-               PrintAndLog("          : data rawdemod ar 32       = demod an ask tag from GraphBuffer using a clock of RF/32");
-               PrintAndLog("          : data rawdemod ar 32 1     = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
-               PrintAndLog("          : data rawdemod ar 1        = demod an ask tag from GraphBuffer while inverting data");
-               PrintAndLog("          : data rawdemod ar 64 1 0   = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
-               PrintAndLog("          : data rawdemod ar 64 1 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
+               PrintAndLog("    sample: data rawdemod ar            = demod an ask tag from GraphBuffer");
+               PrintAndLog("          : data rawdemod ar a          = demod an ask tag from GraphBuffer, amplified");
+               PrintAndLog("          : data rawdemod ar 32         = demod an ask tag from GraphBuffer using a clock of RF/32");
+               PrintAndLog("          : data rawdemod ar 32 1       = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
+               PrintAndLog("          : data rawdemod ar 1          = demod an ask tag from GraphBuffer while inverting data");
+               PrintAndLog("          : data rawdemod ar 64 1 0     = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
+               PrintAndLog("          : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");

                return 0;
        }
                return 0;
        }

-       return ASKrawDemod(Cmd, TRUE);
+       return ASKDemod(Cmd, TRUE, FALSE, 0);

 }
 
 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
 }
 
 int AutoCorrelate(int window, bool SaveGrph, bool verbose)


@@ -799,19 +845,20 @@ int CmdUndec(const char *Cmd)
                return 0;
        }
 
                return 0;
        }
 

-       uint8_t factor = param_get8ex(Cmd, 0,2, 10);
+       uint8_t factor = param_get8ex(Cmd, 0, 2, 10);

        //We have memory, don't we?
        int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
        uint32_t g_index = 0 ,s_index = 0;
        //We have memory, don't we?
        int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
        uint32_t g_index = 0 ,s_index = 0;

-       while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
+       while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)

        {
                int count = 0;
        {
                int count = 0;

-               for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
+               for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)

                        swap[s_index+count] = GraphBuffer[g_index];
                        swap[s_index+count] = GraphBuffer[g_index];

-               s_index+=count;
+               s_index += count;
+               g_index++;

        }
 
        }
 

-       memcpy(GraphBuffer,swap, s_index * sizeof(int));
+       memcpy(GraphBuffer, swap, s_index * sizeof(int));

        GraphTraceLen = s_index;
        RepaintGraphWindow();
        return 0;
        GraphTraceLen = s_index;
        RepaintGraphWindow();
        return 0;


@@ -846,24 +893,14 @@ int CmdAskEdgeDetect(const char *Cmd)
 {
        int thresLen = 25;
        sscanf(Cmd, "%i", &thresLen); 
 {
        int thresLen = 25;
        sscanf(Cmd, "%i", &thresLen); 

-       int shift = 127;
-       int shiftedVal=0;
+

        for(int i = 1; i<GraphTraceLen; i++){
                if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
        for(int i = 1; i<GraphTraceLen; i++){
                if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up

-                       shift=127;
+                       GraphBuffer[i-1] = 127;

                else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
                else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down

-                       shift=-127;
-
-               shiftedVal=GraphBuffer[i]+shift;
-
-               if (shiftedVal>127) 
-                       shiftedVal=127;
-               else if (shiftedVal<-127) 
-                       shiftedVal=-127;
-               GraphBuffer[i-1] = shiftedVal;
+                       GraphBuffer[i-1] = -127;

        }
        RepaintGraphWindow();
        }
        RepaintGraphWindow();

-       //CmdNorm("");

        return 0;
 }
 
        return 0;
 }
 


@@ -873,9 +910,10 @@ int CmdAskEdgeDetect(const char *Cmd)
 int CmdDetectClockRate(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);
 int CmdDetectClockRate(const char *Cmd)
 {
        char cmdp = param_getchar(Cmd, 0);

-       if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  data detectclock [modulation]");
+       if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  data detectclock [modulation] <clock>");

                PrintAndLog("     [modulation as char], specify the modulation type you want to detect the clock of");
                PrintAndLog("     [modulation as char], specify the modulation type you want to detect the clock of");

+               PrintAndLog("     <clock>             , specify the clock (optional - to get best start position only)");

                PrintAndLog("       'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
                PrintAndLog("");
                PrintAndLog("    sample: data detectclock a    = detect the clock of an ask modulated wave in the GraphBuffer");
                PrintAndLog("       'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
                PrintAndLog("");
                PrintAndLog("    sample: data detectclock a    = detect the clock of an ask modulated wave in the GraphBuffer");


@@ -885,7 +923,7 @@ int CmdDetectClockRate(const char *Cmd)
        }
        int ans=0;
        if (cmdp == 'a'){
        }
        int ans=0;
        if (cmdp == 'a'){

-               ans = GetAskClock("", true, false);
+               ans = GetAskClock(Cmd+1, true, false);

        } else if (cmdp == 'f'){
                ans = GetFskClock("", true, false);
        } else if (cmdp == 'n'){
        } else if (cmdp == 'f'){
                ans = GetFskClock("", true, false);
        } else if (cmdp == 'n'){


@@ -900,19 +938,21 @@ int CmdDetectClockRate(const char *Cmd)
 
 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
 {
 
 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
 {

-       char *fskType;
+       static char fType[8];
+       memset(fType, 0x00, 8); 
+       char *fskType = fType;

        if (fchigh==10 && fclow==8){
                if (invert) //fsk2a
        if (fchigh==10 && fclow==8){
                if (invert) //fsk2a

-                       fskType = "FSK2a";
+                       memcpy(fskType, "FSK2a", 5);

                else //fsk2
                else //fsk2

-                       fskType = "FSK2";
+                       memcpy(fskType, "FSK2", 4);

        } else if (fchigh == 8 && fclow == 5) {
                if (invert)
        } else if (fchigh == 8 && fclow == 5) {
                if (invert)

-                       fskType = "FSK1";
+                       memcpy(fskType, "FSK1", 4);

                else
                else

-                       fskType = "FSK1a";
+                       memcpy(fskType, "FSK1a", 5);

        } else {
        } else {

-               fskType = "FSK??";
+               memcpy(fskType, "FSK??", 5);

        }
        return fskType;
 }
        }
        return fskType;
 }


@@ -924,20 +964,19 @@ char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
 int FSKrawDemod(const char *Cmd, bool verbose)
 {
        //raw fsk demod  no manchester decoding no start bit finding just get binary from wave
 int FSKrawDemod(const char *Cmd, bool verbose)
 {
        //raw fsk demod  no manchester decoding no start bit finding just get binary from wave

-       //set defaults
-       int rfLen = 0;
-       int invert = 0;
-       int fchigh = 0;
-       int fclow = 0;
+       uint8_t rfLen, invert, fchigh, fclow;

 
 

+       //set defaults

        //set options from parameters entered with the command
        //set options from parameters entered with the command

-       sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
-
+       rfLen = param_get8(Cmd, 0);
+       invert = param_get8(Cmd, 1);
+       fchigh = param_get8(Cmd, 2);
+       fclow = param_get8(Cmd, 3);

        if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
        if (strlen(Cmd)>0 && strlen(Cmd)<=2) {

-                if (rfLen==1){
+               if (rfLen==1) {

                        invert = 1;   //if invert option only is used
                        rfLen = 0;
                        invert = 1;   //if invert option only is used
                        rfLen = 0;

-                }
+               }

        }
 
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
        }
 
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};


@@ -945,34 +984,34 @@ int FSKrawDemod(const char *Cmd, bool verbose)
        if (BitLen==0) return 0;
        //get field clock lengths
        uint16_t fcs=0;
        if (BitLen==0) return 0;
        //get field clock lengths
        uint16_t fcs=0;

-       if (fchigh==0 || fclow == 0){
+       if (!fchigh || !fclow) {

                fcs = countFC(BitStream, BitLen, 1);
                fcs = countFC(BitStream, BitLen, 1);

-               if (fcs==0){
-                       fchigh=10;
-                       fclow=8;
-               }else{
-                       fchigh = (fcs >> 8) & 0xFF;
-                       fclow = fcs & 0xFF;
+               if (!fcs) {
+                       fchigh = 10;
+                       fclow = 8;
+               } else {
+                       fchigh = (fcs >> 8) & 0x00FF;
+                       fclow = fcs & 0x00FF;

                }
        }
        //get bit clock length
                }
        }
        //get bit clock length

-       if (rfLen==0){
+       if (!rfLen) {

                rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
                rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);

-               if (rfLen == 0) rfLen = 50;
+               if (!rfLen) rfLen = 50;

        }
        }

-       int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
-       if (size>0){
-               setDemodBuf(BitStream,size,0);
+       int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
+       if (size > 0) {
+               setDemodBuf(BitStream, size, 0);

 
                // Now output the bitstream to the scrollback by line of 16 bits
                if (verbose || g_debugMode) {
 
                // Now output the bitstream to the scrollback by line of 16 bits
                if (verbose || g_debugMode) {

-                       PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
-                       PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
+                       PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen,  (unsigned int)invert,  (unsigned int)fchigh,  (unsigned int)fclow);
+                       PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));

                        printDemodBuff();
                }
 
                return 1;
                        printDemodBuff();
                }
 
                return 1;

-       } else{
+       } else {

                if (g_debugMode) PrintAndLog("no FSK data found");
        }
        return 0;
                if (g_debugMode) PrintAndLog("no FSK data found");
        }
        return 0;


@@ -1144,8 +1183,6 @@ int CmdFSKdemodParadox(const char *Cmd)
 //print ioprox ID and some format details
 int CmdFSKdemodIO(const char *Cmd)
 {
 //print ioprox ID and some format details
 int CmdFSKdemodIO(const char *Cmd)
 {

-       //raw fsk demod no manchester decoding no start bit finding just get binary from wave
-       //set defaults

        int idx=0;
        //something in graphbuffer?
        if (GraphTraceLen < 65) {
        int idx=0;
        //something in graphbuffer?
        if (GraphTraceLen < 65) {


@@ -1234,11 +1271,6 @@ int CmdFSKdemodIO(const char *Cmd)
 //print full AWID Prox ID and some bit format details if found
 int CmdFSKdemodAWID(const char *Cmd)
 {
 //print full AWID Prox ID and some bit format details if found
 int CmdFSKdemodAWID(const char *Cmd)
 {

-
-       //int verbose=1;
-       //sscanf(Cmd, "%i", &verbose);
-
-       //raw fsk demod no manchester decoding no start bit finding just get binary from wave

        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
        size_t size = getFromGraphBuf(BitStream);
        if (size==0) return 0;
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
        size_t size = getFromGraphBuf(BitStream);
        if (size==0) return 0;


@@ -1437,7 +1469,6 @@ int CmdFSKdemodPyramid(const char *Cmd)
        uint32_t fc = 0;
        uint32_t cardnum = 0;
        uint32_t code1 = 0;
        uint32_t fc = 0;
        uint32_t cardnum = 0;
        uint32_t code1 = 0;

-       //uint32_t code2 = 0;

        if (fmtLen==26){
                fc = bytebits_to_byte(BitStream+73, 8);
                cardnum = bytebits_to_byte(BitStream+81, 16);
        if (fmtLen==26){
                fc = bytebits_to_byte(BitStream+73, 8);
                cardnum = bytebits_to_byte(BitStream+81, 16);


@@ -1471,6 +1502,98 @@ int CmdFSKdemodPyramid(const char *Cmd)
        return 1;
 }
 
        return 1;
 }
 

+// FDX-B ISO11784/85 demod  (aka animal tag)  BIPHASE, inverted, rf/32,  with preamble of 00000000001 (128bits)
+// 8 databits + 1 parity (1)
+// CIITT 16 chksum
+// NATIONAL CODE, ICAR database
+// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
+// FLAG (animal/non-animal)
+/*
+38 IDbits   
+10 country code 
+1 extra app bit
+14 reserved bits
+1 animal bit
+16 ccitt CRC chksum over 64bit ID CODE.
+24 appli bits.
+
+-- sample: 985121004515220  [ 37FF65B88EF94 ]
+*/
+int CmdFDXBdemodBI(const char *Cmd){
+
+       int invert = 1;
+       int clk = 32;           
+       int errCnt = 0;
+       int maxErr = 0;
+       uint8_t BitStream[MAX_DEMOD_BUF_LEN];   
+       size_t size = getFromGraphBuf(BitStream);       
+       
+       errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
+       if ( errCnt < 0 || errCnt > maxErr ) { 
+               if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
+               return 0;
+       }
+
+       errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
+       if (errCnt < 0 || errCnt > maxErr ) {
+               if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
+               return 0;
+       } 
+       
+       int preambleIndex = FDXBdemodBI(BitStream, &size);
+       if (preambleIndex < 0){
+               if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
+               return 0;
+       }
+       if (size != 128) {
+               if (g_debugMode) PrintAndLog("Error incorrect data length found");
+               return 0;
+       }
+       
+       setDemodBuf(BitStream, 128, preambleIndex);
+
+       // remove marker bits (1's every 9th digit after preamble) (pType = 2)
+       size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
+       if ( size != 104 ) {
+               if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
+               return 0;
+       }
+       if (g_debugMode) {
+               char *bin = sprint_bin_break(BitStream,size,16);
+               PrintAndLog("DEBUG BinStream:\n%s",bin);
+       }
+       PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
+       if (g_debugMode) PrintAndLog("Start marker %d;   Size %d", preambleIndex, size);
+
+       //got a good demod
+       uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
+       uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
+       uint8_t dataBlockBit = BitStream[48];
+       uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
+       uint8_t animalBit = BitStream[63];
+       uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
+       uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
+
+       uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
+       uint8_t raw[8];
+       num_to_bytes(rawid, 8, raw);
+
+       if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
+
+       uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
+       PrintAndLog("Animal ID:     %04u-%012llu", countryCode, NationalCode);
+       PrintAndLog("National Code: %012llu", NationalCode);
+       PrintAndLog("CountryCode:   %04u", countryCode);
+       PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
+       PrintAndLog("reserved Code: %u", reservedCode);
+       PrintAndLog("Animal Tag:    %s", animalBit ? "True" : "False");
+       PrintAndLog("CRC:           0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
+       PrintAndLog("Extended:      0x%X\n", extended);
+       
+       return 1;
+}
+
+

 //by marshmellow
 //attempt to psk1 demod graph buffer
 int PSKDemod(const char *Cmd, bool verbose)
 //by marshmellow
 //attempt to psk1 demod graph buffer
 int PSKDemod(const char *Cmd, bool verbose)


@@ -1484,17 +1607,20 @@ int PSKDemod(const char *Cmd, bool verbose)
                clk=0;
        }
        if (invert != 0 && invert != 1) {
                clk=0;
        }
        if (invert != 0 && invert != 1) {

-               if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
+               if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);

                return 0;
        }
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
        size_t BitLen = getFromGraphBuf(BitStream);
                return 0;
        }
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
        size_t BitLen = getFromGraphBuf(BitStream);

-       if (BitLen==0) return -1;
+       if (BitLen==0) return 0;

        uint8_t carrier=countFC(BitStream, BitLen, 0);
        if (carrier!=2 && carrier!=4 && carrier!=8){
                //invalid carrier
                return 0;
        }
        uint8_t carrier=countFC(BitStream, BitLen, 0);
        if (carrier!=2 && carrier!=4 && carrier!=8){
                //invalid carrier
                return 0;
        }

+       if (g_debugMode){
+               PrintAndLog("Carrier: rf/%d",carrier);
+       }

        int errCnt=0;
        errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
        if (errCnt > maxErr){
        int errCnt=0;
        errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
        if (errCnt > maxErr){


@@ -1534,61 +1660,33 @@ int CmdIndalaDecode(const char *Cmd)
                return 0;
        }
        uint8_t invert=0;
                return 0;
        }
        uint8_t invert=0;

-       ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
-       if (ans < 1) {
+       size_t size = DemodBufferLen;
+       size_t startIdx = indala26decode(DemodBuffer, &size, &invert);
+       if (startIdx < 1 || size > 224) {

                if (g_debugMode==1)
                        PrintAndLog("Error2: %d",ans);
                return -1;
        }
                if (g_debugMode==1)
                        PrintAndLog("Error2: %d",ans);
                return -1;
        }

-       char showbits[251]={0x00};
+       setDemodBuf(DemodBuffer, size, startIdx);

        if (invert)
                if (g_debugMode==1)
                        PrintAndLog("Had to invert bits");
 
        if (invert)
                if (g_debugMode==1)
                        PrintAndLog("Had to invert bits");
 

+       PrintAndLog("BitLen: %d",DemodBufferLen);

        //convert UID to HEX
        uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
        //convert UID to HEX
        uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;

-       int idx;
-       uid1=0;
-       uid2=0;
-       PrintAndLog("BitLen: %d",DemodBufferLen);
+       uid1=bytebits_to_byte(DemodBuffer,32);
+       uid2=bytebits_to_byte(DemodBuffer+32,32);

        if (DemodBufferLen==64){
        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);
+               PrintAndLog("Indala UID=%s (%x%08x)",  sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
+       } else {
+               uid3=bytebits_to_byte(DemodBuffer+64,32);
+               uid4=bytebits_to_byte(DemodBuffer+96,32);
+               uid5=bytebits_to_byte(DemodBuffer+128,32);
+               uid6=bytebits_to_byte(DemodBuffer+160,32);
+               uid7=bytebits_to_byte(DemodBuffer+192,32);
+               PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", 
+                    sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);

        }
        if (g_debugMode){
                PrintAndLog("DEBUG: printing demodbuffer:");
        }
        if (g_debugMode){
                PrintAndLog("DEBUG: printing demodbuffer:");


@@ -1597,11 +1695,49 @@ int CmdIndalaDecode(const char *Cmd)
        return 1;
 }
 
        return 1;
 }
 

+int CmdPSKNexWatch(const char *Cmd)
+{
+       if (!PSKDemod("", false)) return 0;
+       uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+       size_t startIdx = 0, size = DemodBufferLen; 
+       bool invert = false;
+       if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
+               // if didn't find preamble try again inverting
+               if (!PSKDemod("1", false)) return 0; 
+               size = DemodBufferLen;
+               if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
+               invert = true;
+       } 
+       if (size != 128) return 0;
+       setDemodBuf(DemodBuffer, size, startIdx+4);
+       startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
+       //get ID
+       uint32_t ID = 0;
+       for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
+               for (uint8_t idx=0; idx<8; idx++){
+                       ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
+               }       
+       }
+       //parity check (TBD)
+
+       //checksum check (TBD)
+
+       //output
+       PrintAndLog("NexWatch ID: %d", ID);
+       if (invert){
+               PrintAndLog("Had to Invert - probably NexKey");
+               for (uint8_t idx=0; idx<size; idx++)
+                       DemodBuffer[idx] ^= 1;
+       } 
+
+       CmdPrintDemodBuff("x");
+       return 1;
+}
+

 // by marshmellow
 // takes 3 arguments - clock, invert, maxErr as integers
 // attempts to demodulate nrz only
 // prints binary found and saves in demodbuffer for further commands
 // by marshmellow
 // takes 3 arguments - clock, invert, maxErr as integers
 // attempts to demodulate nrz only
 // prints binary found and saves in demodbuffer for further commands

-

 int NRZrawDemod(const char *Cmd, bool verbose)
 {
        int invert=0;
 int NRZrawDemod(const char *Cmd, bool verbose)
 {
        int invert=0;


@@ -1620,7 +1756,7 @@ int NRZrawDemod(const char *Cmd, bool verbose)
        size_t BitLen = getFromGraphBuf(BitStream);
        if (BitLen==0) return 0;
        int errCnt=0;
        size_t BitLen = getFromGraphBuf(BitStream);
        if (BitLen==0) return 0;
        int errCnt=0;

-       errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
+       errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);

        if (errCnt > maxErr){
                if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
                return 0;
        if (errCnt > maxErr){
                if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
                return 0;


@@ -1843,11 +1979,6 @@ int CmdHpf(const char *Cmd)
        RepaintGraphWindow();
        return 0;
 }
        RepaintGraphWindow();
        return 0;
 }

-typedef struct {
-       uint8_t * buffer;
-       uint32_t numbits;
-       uint32_t position;
-}BitstreamOut;

 
 bool _headBit( BitstreamOut *stream)
 {
 
 bool _headBit( BitstreamOut *stream)
 {


@@ -1878,25 +2009,25 @@ int getSamples(const char *Cmd, bool silent)
 
        int n = strtol(Cmd, NULL, 0);
 
 
        int n = strtol(Cmd, NULL, 0);
 

-       if (n == 0)
-               n = sizeof(got);
-
-       if (n > sizeof(got))
+       if ( n == 0 || n > sizeof(got))

                n = sizeof(got);
 
        PrintAndLog("Reading %d bytes from device memory\n", n);
        GetFromBigBuf(got,n,0);
        PrintAndLog("Data fetched");
        UsbCommand response;
                n = sizeof(got);
 
        PrintAndLog("Reading %d bytes from device memory\n", n);
        GetFromBigBuf(got,n,0);
        PrintAndLog("Data fetched");
        UsbCommand response;

-       WaitForResponse(CMD_ACK, &response);
+       if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
+        PrintAndLog("timeout while waiting for reply.");
+               return 1;
+    }
+       

        uint8_t bits_per_sample = 8;
 
        //Old devices without this feature would send 0 at arg[0]
        if(response.arg[0] > 0)
        {
                sample_config *sc = (sample_config *) response.d.asBytes;
        uint8_t bits_per_sample = 8;
 
        //Old devices without this feature would send 0 at arg[0]
        if(response.arg[0] > 0)
        {
                sample_config *sc = (sample_config *) response.d.asBytes;

-               PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
-                   , sc->decimation);
+               PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);

                bits_per_sample = sc->bits_per_sample;
        }
        if(bits_per_sample < 8)
                bits_per_sample = sc->bits_per_sample;
        }
        if(bits_per_sample < 8)


@@ -1904,7 +2035,7 @@ int getSamples(const char *Cmd, bool silent)
                PrintAndLog("Unpacking...");
                BitstreamOut bout = { got, bits_per_sample * n,  0};
                int j =0;
                PrintAndLog("Unpacking...");
                BitstreamOut bout = { got, bits_per_sample * n,  0};
                int j =0;

-               for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) {
+               for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {

                        uint8_t sample = getByte(bits_per_sample, &bout);
                        GraphBuffer[j] = ((int) sample )- 128;
                }
                        uint8_t sample = getByte(bits_per_sample, &bout);
                        GraphBuffer[j] = ((int) sample )- 128;
                }


@@ -1932,11 +2063,11 @@ int CmdTuneSamples(const char *Cmd)
        int timeout = 0;
        printf("\nMeasuring antenna characteristics, please wait...");
 
        int timeout = 0;
        printf("\nMeasuring antenna characteristics, please wait...");
 

-       UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
+       UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
+       clearCommandBuffer();

        SendCommand(&c);
        SendCommand(&c);

-

        UsbCommand resp;
        UsbCommand resp;

-       while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
+       while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {

                timeout++;
                printf(".");
                if (timeout > 7) {
                timeout++;
                printf(".");
                if (timeout > 7) {


@@ -1982,7 +2113,6 @@ int CmdTuneSamples(const char *Cmd)
                ShowGraphWindow();
                RepaintGraphWindow();
        }
                ShowGraphWindow();
                RepaintGraphWindow();
        }

-

        return 0;
 }
 
        return 0;
 }
 


@@ -1998,7 +2128,7 @@ int CmdLoad(const char *Cmd)
        
        FILE *f = fopen(filename, "r");
        if (!f) {
        
        FILE *f = fopen(filename, "r");
        if (!f) {

-                PrintAndLog("couldn't open '%s'", filename);
+               PrintAndLog("couldn't open '%s'", filename);

                return 0;
        }
 
                return 0;
        }
 


@@ -2018,10 +2148,12 @@ int CmdLtrim(const char *Cmd)
 {
        int ds = atoi(Cmd);
 
 {
        int ds = atoi(Cmd);
 

+       if (GraphTraceLen <= 0) return 0;
+

        for (int i = ds; i < GraphTraceLen; ++i)
                GraphBuffer[i-ds] = GraphBuffer[i];
        for (int i = ds; i < GraphTraceLen; ++i)
                GraphBuffer[i-ds] = GraphBuffer[i];

-       GraphTraceLen -= ds;

 
 

+       GraphTraceLen -= ds;

        RepaintGraphWindow();
        return 0;
 }
        RepaintGraphWindow();
        return 0;
 }


@@ -2030,9 +2162,7 @@ int CmdLtrim(const char *Cmd)
 int CmdRtrim(const char *Cmd)
 {
        int ds = atoi(Cmd);
 int CmdRtrim(const char *Cmd)
 {
        int ds = atoi(Cmd);

-

        GraphTraceLen = ds;
        GraphTraceLen = ds;

-

        RepaintGraphWindow();
        return 0;
 }
        RepaintGraphWindow();
        return 0;
 }


@@ -2165,18 +2295,108 @@ int CmdZerocrossings(const char *Cmd)
        return 0;
 }
 
        return 0;
 }
 

+int usage_data_bin2hex(){
+               PrintAndLog("Usage: data bin2hex <binary_digits>");
+               PrintAndLog("       This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
+               return 0;
+}
+
+/**
+ * @brief Utility for conversion via cmdline.
+ * @param Cmd
+ * @return
+ */
+int Cmdbin2hex(const char *Cmd)
+{
+       int bg =0, en =0;
+       if(param_getptr(Cmd, &bg, &en, 0))
+       {
+               return usage_data_bin2hex();
+       }
+       //Number of digits supplied as argument
+       size_t length = en  - bg +1;
+       size_t bytelen = (length+7) / 8;
+       uint8_t* arr = (uint8_t *) malloc(bytelen);
+       memset(arr, 0, bytelen);
+       BitstreamOut bout = { arr, 0, 0 };
+
+       for(; bg <= en ;bg++)
+       {
+               char c = Cmd[bg];
+               if( c == '1')   pushBit(&bout, 1);
+               else if( c == '0')      pushBit(&bout, 0);
+               else PrintAndLog("Ignoring '%c'", c);
+       }
+
+       if(bout.numbits % 8 != 0)
+       {
+               printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
+       }
+
+       //Uses printf instead of PrintAndLog since the latter
+       // adds linebreaks to each printout - this way was more convenient since we don't have to
+       // allocate a string and write to that first...
+       for(size_t x = 0; x  < bytelen ; x++)
+       {
+               printf("%02X", arr[x]);
+       }
+       printf("\n");
+       free(arr);
+       return 0;
+}
+
+int usage_data_hex2bin(){
+       PrintAndLog("Usage: data hex2bin <hex_digits>");
+       PrintAndLog("       This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
+       return 0;
+}
+
+int Cmdhex2bin(const char *Cmd)
+{
+       int bg =0, en =0;
+       if(param_getptr(Cmd, &bg, &en, 0))  return usage_data_hex2bin();
+
+       while(bg <= en )
+       {
+               char x = Cmd[bg++];
+               // capitalize
+               if (x >= 'a' && x <= 'f')
+                       x -= 32;
+               // convert to numeric value
+               if (x >= '0' && x <= '9')
+                       x -= '0';
+               else if (x >= 'A' && x <= 'F')
+                       x -= 'A' - 10;
+               else
+                       continue;
+
+               //Uses printf instead of PrintAndLog since the latter
+               // adds linebreaks to each printout - this way was more convenient since we don't have to
+               // allocate a string and write to that first...
+
+               for(int i= 0 ; i < 4 ; ++i)
+                       printf("%d",(x >> (3 - i)) & 1);
+       }
+       printf("\n");
+
+       return 0;
+}
+

 static command_t CommandTable[] =
 {
        {"help",            CmdHelp,            1, "This help"},
 static command_t CommandTable[] =
 {
        {"help",            CmdHelp,            1, "This help"},

-       {"askedgedetect",   CmdAskEdgeDetect,   1, "[threshold] Adjust Graph for manual ask demod using length of sample differences to detect the edge of a wave (default = 25)"},
+       {"askedgedetect",   CmdAskEdgeDetect,   1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},

        {"askem410xdemod",  CmdAskEM410xDemod,  1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
        {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
        {"askem410xdemod",  CmdAskEM410xDemod,  1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
        {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},

+       {"askvikingdemod",  CmdVikingDemod,     1, "Demodulate a Viking AM tag from GraphBuffer"},

        {"autocorr",        CmdAutoCorr,        1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
        {"autocorr",        CmdAutoCorr,        1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},

-       {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
+       {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
+       {"bin2hex",         Cmdbin2hex,         1, "bin2hex <digits>     -- Converts binary to hexadecimal"},

        {"bitsamples",      CmdBitsamples,      0, "Get raw samples as bitstring"},
        {"buffclear",       CmdBuffClear,       1, "Clear sample buffer and graph window"},
        {"dec",             CmdDec,             1, "Decimate samples"},
        {"detectclock",     CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
        {"bitsamples",      CmdBitsamples,      0, "Get raw samples as bitstring"},
        {"buffclear",       CmdBuffClear,       1, "Clear sample buffer and graph window"},
        {"dec",             CmdDec,             1, "Decimate samples"},
        {"detectclock",     CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},

+       {"fdxbdemod",       CmdFDXBdemodBI    , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},

        {"fskawiddemod",    CmdFSKdemodAWID,    1, "Demodulate an AWID FSK tag from GraphBuffer"},
        //{"fskfcdetect",   CmdFSKfcDetect,     1, "Try to detect the Field Clock of an FSK wave"},
        {"fskhiddemod",     CmdFSKdemodHID,     1, "Demodulate a HID FSK tag from GraphBuffer"},
        {"fskawiddemod",    CmdFSKdemodAWID,    1, "Demodulate an AWID FSK tag from GraphBuffer"},
        //{"fskfcdetect",   CmdFSKfcDetect,     1, "Try to detect the Field Clock of an FSK wave"},
        {"fskhiddemod",     CmdFSKdemodHID,     1, "Demodulate a HID FSK tag from GraphBuffer"},


@@ -2186,21 +2406,23 @@ static command_t CommandTable[] =
        {"getbitstream",    CmdGetBitStream,    1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
        {"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"},
        {"getbitstream",    CmdGetBitStream,    1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
        {"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"},

+       {"hex2bin",         Cmdhex2bin,         1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},

        {"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"},
        {"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"},

-       {"manrawdecode",    Cmdmandecoderaw,    1, "Manchester decode binary stream in DemodBuffer"},
+       {"manrawdecode",    Cmdmandecoderaw,    1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},

        {"norm",            CmdNorm,            1, "Normalize max/min to +/-128"},
        {"plot",            CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},
        {"norm",            CmdNorm,            1, "Normalize max/min to +/-128"},
        {"plot",            CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},

-       {"printdemodbuffer",CmdPrintDemodBuff,  1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"},
+       {"printdemodbuffer",CmdPrintDemodBuff,  1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},

        {"pskindalademod",  CmdIndalaDecode,    1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
        {"pskindalademod",  CmdIndalaDecode,    1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},

+       {"psknexwatchdemod",CmdPSKNexWatch,     1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},

        {"rawdemod",        CmdRawDemod,        1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},  
        {"samples",         CmdSamples,         0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
        {"save",            CmdSave,            1, "<filename> -- Save trace (from graph window)"},
        {"scale",           CmdScale,           1, "<int> -- Set cursor display scale"},
        {"rawdemod",        CmdRawDemod,        1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},  
        {"samples",         CmdSamples,         0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
        {"save",            CmdSave,            1, "<filename> -- Save trace (from graph window)"},
        {"scale",           CmdScale,           1, "<int> -- Set cursor display scale"},

-       {"setdebugmode",    CmdSetDebugMode,    1, "<0|1> -- Turn on or off Debugging Mode for demods"},
+       {"setdebugmode",    CmdSetDebugMode,    1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},

        {"shiftgraphzero",  CmdGraphShiftZero,  1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
        {"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"},
        {"shiftgraphzero",  CmdGraphShiftZero,  1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
        {"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"},


@@ -2209,8 +2431,8 @@ static command_t CommandTable[] =
        {NULL, NULL, 0, NULL}
 };
 
        {NULL, NULL, 0, NULL}
 };
 

-int CmdData(const char *Cmd)
-{
+int CmdData(const char *Cmd){
+       clearCommandBuffer();

        CmdsParse(CommandTable, Cmd);
        return 0;
 }
        CmdsParse(CommandTable, Cmd);
        return 0;
 }