X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7db5f1ca25c2e451eac0f11e4e7eb9b1a9939ce3..b7eddc14db9262a51ad3100ade7386d03500ace8:/client/cmddata.c?ds=sidebyside

diff --git a/client/cmddata.c b/client/cmddata.c
index 674a1bb5..bec1b5aa 100644
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -11,7 +11,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-//#include <inttypes.h>
 #include <limits.h>
 #include "proxmark3.h"
 #include "data.h"
@@ -22,513 +21,972 @@
 #include "cmdmain.h"
 #include "cmddata.h"
 #include "lfdemod.h"
+#include "usb_cmd.h"
+#include "crc.h"
+#include "crc16.h"
 
+uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
+uint8_t g_debugMode;
+size_t DemodBufferLen;
 static int CmdHelp(const char *Cmd);
 
-int CmdAmp(const char *Cmd)
-{
-  int i, rising, falling;
-  int max = INT_MIN, min = INT_MAX;
-
-  for (i = 10; i < GraphTraceLen; ++i) {
-    if (GraphBuffer[i] > max)
-      max = GraphBuffer[i];
-    if (GraphBuffer[i] < min)
-      min = GraphBuffer[i];
-  }
-
-  if (max != min) {
-    rising = falling= 0;
-    for (i = 0; i < GraphTraceLen; ++i) {
-      if (GraphBuffer[i + 1] < GraphBuffer[i]) {
-        if (rising) {
-          GraphBuffer[i] = max;
-          rising = 0;
-        }
-        falling = 1;
-      }
-      if (GraphBuffer[i + 1] > GraphBuffer[i]) {
-        if (falling) {
-          GraphBuffer[i] = min;
-          falling = 0;
-        }
-        rising= 1;
-      }
-    }
-  }
-  RepaintGraphWindow();
-  return 0;
-}
-
-/*
- * Generic command to demodulate ASK.
- *
- * Argument is convention: positive or negative (High mod means zero
- * or high mod means one)
- *
- * Updates the Graph trace with 0/1 values
- *
- * Arguments:
- * c : 0 or 1
- */
- //this method is dependant on all highs and lows to be the same(or clipped)  this creates issues[marshmellow] it also ignores the clock
-int Cmdaskdemod(const char *Cmd)
-{
-  int i;
-  int c, high = 0, low = 0;
-
-  // TODO: complain if we do not give 2 arguments here !
-  // (AL - this doesn't make sense! we're only using one argument!!!)
-  sscanf(Cmd, "%i", &c);
-
-  /* Detect high and lows and clock */
-  // (AL - clock???) 
-  for (i = 0; i < GraphTraceLen; ++i)
-  {
-    if (GraphBuffer[i] > high)
-      high = GraphBuffer[i];
-    else if (GraphBuffer[i] < low)
-      low = GraphBuffer[i];
-  }
-  high=abs(high*.75);
-  low=abs(low*.75);
-  if (c != 0 && c != 1) {
-    PrintAndLog("Invalid argument: %s", Cmd);
-    return 0;
-  }
-  //prime loop
-  if (GraphBuffer[0] > 0) {
-    GraphBuffer[0] = 1-c;
-  } else {
-    GraphBuffer[0] = c;
-  }
-  for (i = 1; i < GraphTraceLen; ++i) {
-    /* Transitions are detected at each peak
-     * Transitions are either:
-     * - we're low: transition if we hit a high
-     * - we're high: transition if we hit a low
-     * (we need to do it this way because some tags keep high or
-     * low for long periods, others just reach the peak and go
-     * down)
-     */
-    //[marhsmellow] change == to >= for high and <= for low for fuzz
-    if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) {
-      GraphBuffer[i] = 1 - c;
-    } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){
-      GraphBuffer[i] = c;
-    } else {
-      /* No transition */
-      GraphBuffer[i] = GraphBuffer[i - 1];
-    }
-  }
-  RepaintGraphWindow();
-  return 0;
-}
-
-void printBitStream(uint8_t BitStream[], uint32_t bitLen){
-  uint32_t i = 0;
-  if (bitLen<16) {
-    PrintAndLog("Too few bits found: %d",bitLen);
-    return;
-  }
-  if (bitLen>512) bitLen=512;
-   for (i = 0; i < (bitLen-16); i+=16) {
-    PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
-      BitStream[i],
-      BitStream[i+1],
-      BitStream[i+2],
-      BitStream[i+3],
-      BitStream[i+4],
-      BitStream[i+5],
-      BitStream[i+6],
-      BitStream[i+7],
-      BitStream[i+8],
-      BitStream[i+9],
-      BitStream[i+10],
-      BitStream[i+11],
-      BitStream[i+12],
-      BitStream[i+13],
-      BitStream[i+14],
-      BitStream[i+15]);
-  }
-  return; 
-}
-void printEM410x(uint64_t id)
-{
-  if (id !=0){
-      uint64_t iii=1;
-      uint64_t id2lo=0; //id2hi=0,
-      uint32_t ii=0;
-      uint32_t i=0;
-      for (ii=5; ii>0;ii--){
-        for (i=0;i<8;i++){
-          id2lo=(id2lo<<1LL)|((id & (iii<<(i+((ii-1)*8))))>>(i+((ii-1)*8)));
-        }
-      }
-      //output em id
-      PrintAndLog("EM TAG ID    : %010llx", id);
-      PrintAndLog("Unique TAG ID: %010llx",  id2lo); //id2hi,
-      PrintAndLog("DEZ 8        : %08lld",id & 0xFFFFFF);
-      PrintAndLog("DEZ 10       : %010lld",id & 0xFFFFFF);
-      PrintAndLog("DEZ 5.5      : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
-      PrintAndLog("DEZ 3.5A     : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
-      PrintAndLog("DEZ 14/IK2   : %014lld",id);
-      PrintAndLog("DEZ 15/IK3   : %015lld",id2lo);
-      PrintAndLog("Other        : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
-    }  
-    return;
-}
-
-int CmdEm410xDecode(const char *Cmd)
-{
-  uint64_t id=0;
-  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-  uint32_t i=0;
-  for (i=0;i<GraphTraceLen;++i){
-    BitStream[i]=(uint8_t)(GraphBuffer[i]+128);
-  }
-  id = Em410xDecode(BitStream,i);
-  printEM410x(id);
-  return 0;
-}
-
-int getFromGraphBuf(uint8_t *buff)
-{
-  uint32_t i;
-  for (i=0;i<GraphTraceLen;++i)
-    buff[i]=(uint8_t)(GraphBuffer[i]+128);
-  return i;
+//set the demod buffer with given array of binary (one bit per byte)
+//by marshmellow
+void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
+{
+	if (buff == NULL) 
+		return;
+
+	if ( size >= MAX_DEMOD_BUF_LEN)
+		size = MAX_DEMOD_BUF_LEN;
+
+	size_t i = 0;
+	for (; i < size; i++){
+		DemodBuffer[i]=buff[startIdx++];
+	}
+	DemodBufferLen=size;
+	return;
+}
+
+int CmdSetDebugMode(const char *Cmd)
+{
+	int demod=0;
+	sscanf(Cmd, "%i", &demod);
+	g_debugMode=(uint8_t)demod;
+	return 1;
+}
+
+int usage_data_printdemodbuf(){
+		PrintAndLog("Usage: data printdemodbuffer x o <offset>");
+		PrintAndLog("Options:        ");
+		PrintAndLog("       h          This help");
+		PrintAndLog("       x          output in hex (omit for binary output)");
+		PrintAndLog("       o <offset> enter offset in # of bits");
+		return 0;	
 }
 
 //by marshmellow
-//takes 2 arguments - clock and invert both as integers
-//attempts to demodulate ask while decoding manchester 
+void printDemodBuff(void)
+{
+	int bitLen = DemodBufferLen;
+	if (bitLen<1) {
+		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
+
+	char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
+	PrintAndLog("%s",bin);
+
+	return;
+}
+
+int CmdPrintDemodBuff(const char *Cmd)
+{
+	char hex[512]={0x00};
+	bool hexMode = false;
+	bool errors = false;
+	uint8_t offset = 0;
+	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_get8(Cmd, cmdp+1);
+			if (!offset) errors = true;
+			cmdp += 2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+			errors = true;
+			break;
+		}
+		if(errors) break;
+	}
+	//Validations
+	if(errors) return usage_data_printdemodbuf();
+
+	int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
+
+	if (hexMode){
+		char *buf = (char *) (DemodBuffer + offset);
+		numBits = binarraytohex(hex, buf, numBits);
+		if (numBits==0) return 0;
+		PrintAndLog("DemodBuffer: %s",hex);		
+	} else {
+		//setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
+		char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
+		PrintAndLog("DemodBuffer:\n%s",bin);
+	}
+	return 1;
+}
+
+//by marshmellow
+//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
+int CmdGetBitStream(const char *Cmd)
+{
+	int i;
+	CmdHpf(Cmd);
+	for (i = 0; i < GraphTraceLen; i++) {
+		if (GraphBuffer[i] >= 1) {
+			GraphBuffer[i] = 1;
+		} else {
+			GraphBuffer[i] = 0;
+		}
+	}
+	RepaintGraphWindow();
+	return 0;
+}
+
+//by marshmellow
+//print 64 bit EM410x ID in multiple formats
+void printEM410x(uint32_t hi, uint64_t id)
+{
+	if (id || hi){
+		uint64_t iii=1;
+		uint64_t id2lo=0;
+		uint32_t ii=0;
+		uint32_t i=0;
+		for (ii=5; ii>0;ii--){
+			for (i=0;i<8;i++){
+				id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
+			}
+		}
+		if (hi){
+			//output 88 bit em id
+			PrintAndLog("\nEM TAG ID      : %06X%016llX", hi, id);
+		} else{
+			//output 40 bit em id
+			PrintAndLog("\nEM TAG ID      : %010llX", id);
+			PrintAndLog("Unique TAG ID  : %010llX",  id2lo);
+			PrintAndLog("\nPossible de-scramble patterns");
+			PrintAndLog("HoneyWell IdentKey {");
+			PrintAndLog("DEZ 8          : %08lld",id & 0xFFFFFF);
+			PrintAndLog("DEZ 10         : %010lld",id & 0xFFFFFFFF);
+			PrintAndLog("DEZ 5.5        : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
+			PrintAndLog("DEZ 3.5A       : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
+			PrintAndLog("DEZ 3.5B       : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
+			PrintAndLog("DEZ 3.5C       : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
+			PrintAndLog("DEZ 14/IK2     : %014lld",id);
+			PrintAndLog("DEZ 15/IK3     : %015lld",id2lo);
+			PrintAndLog("DEZ 20/ZK      : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
+			    (id2lo & 0xf000000000) >> 36,
+			    (id2lo & 0x0f00000000) >> 32,
+			    (id2lo & 0x00f0000000) >> 28,
+			    (id2lo & 0x000f000000) >> 24,
+			    (id2lo & 0x0000f00000) >> 20,
+			    (id2lo & 0x00000f0000) >> 16,
+			    (id2lo & 0x000000f000) >> 12,
+			    (id2lo & 0x0000000f00) >> 8,
+			    (id2lo & 0x00000000f0) >> 4,
+			    (id2lo & 0x000000000f)
+			);
+			uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff))  + 0x143e00;
+			PrintAndLog("}\nOther          : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));  
+			PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
+
+			uint32_t p1id = (id & 0xFFFFFF);
+			uint8_t arr[32] = {0x00};
+			int i =0; 
+			int j = 23;
+			for (; i < 24; ++i, --j	){
+				arr[i] = (p1id >> i) & 1;
+			}
+
+			uint32_t p1  = 0;
+
+			p1 |= arr[23] << 21;
+			p1 |= arr[22] << 23;
+			p1 |= arr[21] << 20;
+			p1 |= arr[20] << 22;
+				
+			p1 |= arr[19] << 18;
+			p1 |= arr[18] << 16;
+			p1 |= arr[17] << 19;
+			p1 |= arr[16] << 17;
+				
+			p1 |= arr[15] << 13;
+			p1 |= arr[14] << 15;
+			p1 |= arr[13] << 12;
+			p1 |= arr[12] << 14;
+
+			p1 |= arr[11] << 6;
+			p1 |= arr[10] << 2;
+			p1 |= arr[9]  << 7;
+			p1 |= arr[8]  << 1;
+
+			p1 |= arr[7]  << 0;
+			p1 |= arr[6]  << 8;
+			p1 |= arr[5]  << 11;
+			p1 |= arr[4]  << 3;
+
+			p1 |= arr[3]  << 10;
+			p1 |= arr[2]  << 4;
+			p1 |= arr[1]  << 5;
+			p1 |= arr[0]  << 9;
+			PrintAndLog("Pattern 1      : %d [0x%X]", p1, p1);
+
+			uint16_t sebury1 = id & 0xFFFF;
+			uint8_t  sebury2 = (id >> 16) & 0x7F;
+			uint32_t sebury3 = id & 0x7FFFFF;
+			PrintAndLog("Pattern Sebury : %d %d %d  [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
+		}
+	}
+	return;
+}
+
+int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *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){
+			PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
+			printDemodBuff();
+		}
+		if (verbose){
+			PrintAndLog("EM410x pattern found: ");
+			printEM410x(*hi, *lo);
+		}
+		return 1;
+	}
+	return 0;
+}
+
+int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
+{
+	if (!ASKDemod(Cmd, FALSE, FALSE, 1)) 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
 //prints binary found and saves in graphbuffer for further commands
-int Cmdaskmandemod(const char *Cmd)
+int CmdAskEM410xDemod(const char *Cmd)
 {
-  int invert=0; 
-  int clk=0; 
-  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-  sscanf(Cmd, "%i %i", &clk, &invert);    
-  if (invert != 0 && invert != 1) {
-    PrintAndLog("Invalid argument: %s", Cmd);
-    return 0;
-  }
-  uint32_t BitLen = getFromGraphBuf(BitStream);
-
-  int errCnt=0;
-   errCnt = askmandemod(BitStream, &BitLen,&clk,&invert);
-  if (errCnt==-1){  //if fatal error (or -1)
-    PrintAndLog("no data found"); 
-    return 0;
-  } 
-  PrintAndLog("Using Clock: %d  and invert=%d",clk,invert);
-    //PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum);
-    //move BitStream back to GraphBuffer
-    /*
-      ClearGraph(0);
-      for (i=0; i < bitnum; ++i){
-        GraphBuffer[i]=BitStream[i];
-      }
-      GraphTraceLen=bitnum;
-      RepaintGraphWindow();
-    */
-    //output
-  if (errCnt>0){
-    PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
-  }
-  PrintAndLog("ASK/Manchester decoded bitstream:");
-  // Now output the bitstream to the scrollback by line of 16 bits
-  printBitStream(BitStream,BitLen);
-  uint64_t lo =0;
-  lo = Em410xDecode(BitStream,BitLen);
-  printEM410x(lo);
-  
-  return 0;
+	char cmdp = param_getchar(Cmd, 0);
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
+		PrintAndLog("Usage:  data askem410xdemod [clock] <0|1> [maxError]");
+		PrintAndLog("     [set clock as integer] optional, if not set, autodetect.");
+		PrintAndLog("     <invert>, 1 for invert output");
+		PrintAndLog("     [set maximum allowed errors], default = 100.");
+		PrintAndLog("");
+		PrintAndLog("    sample: data askem410xdemod        = demod an EM410x Tag ID from GraphBuffer");
+		PrintAndLog("          : data askem410xdemod 32     = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
+		PrintAndLog("          : data askem410xdemod 32 1   = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
+		PrintAndLog("          : data askem410xdemod 1      = demod an EM410x Tag ID from GraphBuffer while inverting data");
+		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;
+	}
+	uint64_t lo = 0;
+	uint32_t hi = 0;
+	return AskEm410xDemod(Cmd, &hi, &lo, true);
 }
 
 //by marshmellow
-//biphase demod = 10 (or 01)=1 / 00 (or 11)=0
+//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(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
+{
+	int invert=0;
+	int clk=0;
+	int maxErr=100;
+	int maxLen=0;
+	uint8_t askAmp = 0;
+	char amp = param_getchar(Cmd, 0);
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
+	if (!maxLen) maxLen = 512*64;
+	if (invert != 0 && invert != 1) {
+		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 (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
+	if (BitLen<255) return 0;
+	if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
+
+	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 (errCnt>maxErr){
+		if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
+		return 0;
+	}
+	if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
+
+	//output
+	setDemodBuf(BitStream,BitLen,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){
+		AskEm410xDecode(true, &hi, &lo);
+	}
+	return 1;
+}
 
+//by marshmellow
+//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);
+	if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
+		PrintAndLog("Usage:  data rawdemod am [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 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("          : data rawdemod am 32 1   = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
+		PrintAndLog("          : data rawdemod am 1      = demod an ask/manchester tag from GraphBuffer while inverting data");
+		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 ASKDemod(Cmd, TRUE, TRUE, 1);
+}
 
 //by marshmellow
-//manchester demod
+//manchester decode
 //stricktly take 10 and 01 and convert to 0 and 1
 int Cmdmandecoderaw(const char *Cmd)
 {
-  int i =0;
-  int errCnt=0;
-  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];
-  }
-  if (high>1 || low <0 ){
-    PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode");
-    return 0;
-  }
-  bitnum=i;
-  errCnt=manrawdemod(BitStream,&bitnum);
-  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);
-    printEM410x(id);     
-  }
-  return 0;
+	int i =0;
+	int errCnt=0;
+	size_t size=0;
+	int invert=0;
+	int maxErr = 20;
+	char cmdp = param_getchar(Cmd, 0);
+	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("  [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;
+	}
+	if (DemodBufferLen==0) return 0;
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	int high=0,low=0;
+	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>7 || low <0 ){
+		PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
+		return 0;
+	}
+
+	sscanf(Cmd, "%i %i", &invert, &maxErr);
+	size=i;
+	errCnt=manrawdecode(BitStream, &size, invert);
+	if (errCnt>=maxErr){
+		PrintAndLog("Too many errors: %d",errCnt);
+		return 0;
+	}
+	PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
+	PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
+	if (errCnt==0){
+		uint64_t id = 0;
+		uint32_t hi = 0;
+		size_t idx=0;
+		if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
+			//need to adjust to set bitstream back to manchester encoded data
+			//setDemodBuf(BitStream, size, idx);
+
+			printEM410x(hi, id);
+		}
+	}
+	return 1;
 }
 
 //by marshmellow
-//takes 2 arguments - clock and invert both as integers
-//attempts to demodulate ask only
-//prints binary found and saves in graphbuffer for further commands
-int Cmdaskrawdemod(const char *Cmd)
+//biphase decode
+//take 01 or 10 = 0 and 11 or 00 = 1
+//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
+// and "invert" default = 0 if 1 it will invert output
+//  the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
+int CmdBiphaseDecodeRaw(const char *Cmd)
 {
-  uint32_t i;
-  int invert=0; 
-  int clk=0; 
-  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-  sscanf(Cmd, "%i %i", &clk, &invert);    
-  if (invert != 0 && invert != 1) {
-    PrintAndLog("Invalid argument: %s", Cmd);
-    return 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)
-    PrintAndLog("no data found"); 
-    return 0;
-  } 
-  PrintAndLog("Using Clock: %d  and invert=%d",clk,invert);
-    //PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum);
-    //move BitStream back to GraphBuffer
-    
-  ClearGraph(0);
-  for (i=0; i < BitLen; ++i){
-    GraphBuffer[i]=BitStream[i];
-  }
-  GraphTraceLen=BitLen;
-  RepaintGraphWindow();
-    
-    //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);
-  
-  return 0;
+	size_t size=0;
+	int offset=0, invert=0, maxErr=20, errCnt=0;
+	char cmdp = param_getchar(Cmd, 0);
+	if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
+		PrintAndLog("Usage:  data biphaserawdecode [offset] [invert] [maxErr]");
+		PrintAndLog("     Converts 10 or 01 to 1 and 11 or 00 to 0");
+		PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");
+		PrintAndLog("     --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
+		PrintAndLog("");
+		PrintAndLog("     [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
+		PrintAndLog("     [invert <0|1>], set to 1 to invert output");
+		PrintAndLog("     [maxErr int],   set max errors tolerated - default=20");
+		PrintAndLog("");
+		PrintAndLog("    sample: data biphaserawdecode     = decode biphase bitstream from the demodbuffer");
+		PrintAndLog("    sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
+		return 0;
+	}
+	sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
+	if (DemodBufferLen==0){
+		PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
+		return 0;
+	}
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	memcpy(BitStream, DemodBuffer, DemodBufferLen); 
+	size = DemodBufferLen;
+	errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
+	if (errCnt<0){
+		PrintAndLog("Error during decode:%d", errCnt);
+		return 0;
+	}
+	if (errCnt>maxErr){
+		PrintAndLog("Too many errors attempting to decode: %d",errCnt);
+		return 0;
+	}
+
+	if (errCnt>0){
+		PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
+	}
+	PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
+	PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
+	
+	if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset);  //remove first bit from raw demod
+	return 1;
 }
 
-int CmdAutoCorr(const char *Cmd)
+//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;
+	sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
+
+	uint8_t BitStream[MAX_DEMOD_BUF_LEN];	  
+	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;  
+	} 
+
+	//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 > maxErr) {
+		if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
+		return 0;
+	}
+	//success set DemodBuffer and return
+	setDemodBuf(BitStream, size, 0);
+	if (g_debugMode || verbose){
+		PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
+		printDemodBuff();
+	}
+	return 1;
+}
+//by marshmellow - see ASKbiphaseDemod
+int Cmdaskbiphdemod(const char *Cmd)
 {
-  static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
+	char cmdp = param_getchar(Cmd, 0);
+	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("     [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("     NOTE: any other arg must have previous args set to work");
+		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 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);
+}
 
-  int window = atoi(Cmd);
+//by marshmellow
+//attempts to demodulate and identify a G_Prox_II verex/chubb card
+//WARNING: if it fails during some points it will destroy the DemodBuffer data
+// but will leave the GraphBuffer intact.
+//if successful it will push askraw data back to demod buffer ready for emulation
+int CmdG_Prox_II_Demod(const char *Cmd)
+{
+	if (!ASKbiphaseDemod(Cmd, FALSE)){
+		if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
+		return 0;
+	}
+	size_t size = DemodBufferLen;
+	//call lfdemod.c demod for gProxII
+	int ans = gProxII_Demod(DemodBuffer, &size);
+	if (ans < 0){
+		if (g_debugMode) PrintAndLog("Error gProxII_Demod");
+		return 0;
+	}
+	//got a good demod
+	uint32_t ByteStream[65] = {0x00};
+	uint8_t xorKey=0;
+	uint8_t keyCnt=0;
+	uint8_t bitCnt=0;
+	uint8_t ByteCnt=0;
+	size_t startIdx = ans + 6; //start after preamble
+	for (size_t idx = 0; idx<size-6; idx++){
+		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);
+				return 0;
+			}
+			continue;
+		} 
+		if (keyCnt<8){ //lsb first
+			xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
+			keyCnt++;
+			if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
+			continue;
+		}
+		//lsb first
+		ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
+		bitCnt++;
+		if (bitCnt % 8 == 0){
+			if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
+			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]);
+	}
+	//now ByteStream contains 64 bytes of decrypted raw tag data
+	// 
+	uint8_t fmtLen = ByteStream[0]>>2;
+	uint32_t FC = 0;
+	uint32_t Card = 0;
+	uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
+	uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
+	uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
+
+	if (fmtLen==36){
+		FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
+		Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
+		PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
+	} else if(fmtLen==26){
+		FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
+		Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
+		PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);    
+	} else {
+		PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
+	}
+	PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
+	setDemodBuf(DemodBuffer+ans, 96, 0);
+	return 1;
+}
 
-  if (window == 0) {
-    PrintAndLog("needs a window");
-    return 0;
-  }
-  if (window >= GraphTraceLen) {
-    PrintAndLog("window must be smaller than trace (%d samples)",
-      GraphTraceLen);
-    return 0;
-  }
+//by marshmellow - see ASKDemod
+int Cmdaskrawdemod(const char *Cmd)
+{
+	char cmdp = param_getchar(Cmd, 0);
+	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 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("    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 ASKDemod(Cmd, TRUE, FALSE, 0);
+}
 
-  PrintAndLog("performing %d correlations", GraphTraceLen - window);
+int AutoCorrelate(int window, bool SaveGrph, bool verbose)
+{
+	static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
+	size_t Correlation = 0;
+	int maxSum = 0;
+	int lastMax = 0;
+	if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
+	for (int i = 0; i < GraphTraceLen - window; ++i) {
+		int sum = 0;
+		for (int j = 0; j < window; ++j) {
+			sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
+		}
+		CorrelBuffer[i] = sum;
+		if (sum >= maxSum-100 && sum <= maxSum+100){
+			//another max
+			Correlation = i-lastMax;
+			lastMax = i;
+			if (sum > maxSum) maxSum = sum;
+		} else if (sum > maxSum){
+			maxSum=sum;
+			lastMax = i;
+		}
+	}
+	if (Correlation==0){
+		//try again with wider margin
+		for (int i = 0; i < GraphTraceLen - window; i++){
+			if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
+				//another max
+				Correlation = i-lastMax;
+				lastMax = i;
+				//if (CorrelBuffer[i] > maxSum) maxSum = sum;
+			}
+		}
+	}
+	if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
+
+	if (SaveGrph){
+		GraphTraceLen = GraphTraceLen - window;
+		memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
+		RepaintGraphWindow();  
+	}
+	return Correlation;
+}
 
-  for (int i = 0; i < GraphTraceLen - window; ++i) {
-    int sum = 0;
-    for (int j = 0; j < window; ++j) {
-      sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
-    }
-    CorrelBuffer[i] = sum;
-  }
-  GraphTraceLen = GraphTraceLen - window;
-  memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
+int usage_data_autocorr(void)
+{
+	//print help
+	PrintAndLog("Usage: data autocorr [window] [g]");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h              This help");
+	PrintAndLog("       [window]       window length for correlation - default = 4000");
+	PrintAndLog("       g              save back to GraphBuffer (overwrite)");
+	return 0;
+}
 
-  RepaintGraphWindow();
-  return 0;
+int CmdAutoCorr(const char *Cmd)
+{
+	char cmdp = param_getchar(Cmd, 0);
+	if (cmdp == 'h' || cmdp == 'H') 
+		return usage_data_autocorr();
+	int window = 4000; //set default
+	char grph=0;
+	bool updateGrph = FALSE;
+	sscanf(Cmd, "%i %c", &window, &grph);
+
+	if (window >= GraphTraceLen) {
+		PrintAndLog("window must be smaller than trace (%d samples)",
+			GraphTraceLen);
+		return 0;
+	}
+	if (grph == 'g') updateGrph=TRUE;
+	return AutoCorrelate(window, updateGrph, TRUE);
 }
 
 int CmdBitsamples(const char *Cmd)
 {
-  int cnt = 0;
-  uint8_t got[12288];
-  
-  GetFromBigBuf(got,sizeof(got),0);
-  WaitForResponse(CMD_ACK,NULL);
-
-    for (int j = 0; j < sizeof(got); j++) {
-      for (int k = 0; k < 8; k++) {
-        if(got[j] & (1 << (7 - k))) {
-          GraphBuffer[cnt++] = 1;
-        } else {
-          GraphBuffer[cnt++] = 0;
-        }
-      }
-  }
-  GraphTraceLen = cnt;
-  RepaintGraphWindow();
-  return 0;
-}
-
-/*
- * Convert to a bitstream
- */
-int CmdBitstream(const char *Cmd)
-{
-  int i, j;
-  int bit;
-  int gtl;
-  int clock;
-  int low = 0;
-  int high = 0;
-  int hithigh, hitlow, first;
-
-  /* Detect high and lows and clock */
-  for (i = 0; i < GraphTraceLen; ++i)
-  {
-    if (GraphBuffer[i] > high)
-      high = GraphBuffer[i];
-    else if (GraphBuffer[i] < low)
-      low = GraphBuffer[i];
-  }
-
-  /* Get our clock */
-  clock = GetClock(Cmd, high, 1);
-  gtl = ClearGraph(0);
-
-  bit = 0;
-  for (i = 0; i < (int)(gtl / clock); ++i)
-  {
-    hithigh = 0;
-    hitlow = 0;
-    first = 1;
-    /* Find out if we hit both high and low peaks */
-    for (j = 0; j < clock; ++j)
-    {
-      if (GraphBuffer[(i * clock) + j] == high)
-        hithigh = 1;
-      else if (GraphBuffer[(i * clock) + j] == low)
-        hitlow = 1;
-      /* it doesn't count if it's the first part of our read
-         because it's really just trailing from the last sequence */
-      if (first && (hithigh || hitlow))
-        hithigh = hitlow = 0;
-      else
-        first = 0;
-
-      if (hithigh && hitlow)
-        break;
-    }
-
-    /* If we didn't hit both high and low peaks, we had a bit transition */
-    if (!hithigh || !hitlow)
-      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();
-  return 0;
+	int cnt = 0;
+	uint8_t got[12288];
+
+	GetFromBigBuf(got,sizeof(got),0);
+	WaitForResponse(CMD_ACK,NULL);
+
+		for (int j = 0; j < sizeof(got); j++) {
+			for (int k = 0; k < 8; k++) {
+				if(got[j] & (1 << (7 - k))) {
+					GraphBuffer[cnt++] = 1;
+				} else {
+					GraphBuffer[cnt++] = 0;
+				}
+			}
+	}
+	GraphTraceLen = cnt;
+	RepaintGraphWindow();
+	return 0;
 }
 
 int CmdBuffClear(const char *Cmd)
 {
-  UsbCommand c = {CMD_BUFF_CLEAR};
-  SendCommand(&c);
-  ClearGraph(true);
-  return 0;
+	UsbCommand c = {CMD_BUFF_CLEAR};
+	SendCommand(&c);
+	ClearGraph(true);
+	return 0;
 }
 
 int CmdDec(const char *Cmd)
 {
-  for (int i = 0; i < (GraphTraceLen / 2); ++i)
-    GraphBuffer[i] = GraphBuffer[i * 2];
-  GraphTraceLen /= 2;
-  PrintAndLog("decimated by 2");
-  RepaintGraphWindow();
-  return 0;
+	for (int i = 0; i < (GraphTraceLen / 2); ++i)
+		GraphBuffer[i] = GraphBuffer[i * 2];
+	GraphTraceLen /= 2;
+	PrintAndLog("decimated by 2");
+	RepaintGraphWindow();
+	return 0;
+}
+/**
+ * Undecimate - I'd call it 'interpolate', but we'll save that
+ * name until someone does an actual interpolation command, not just
+ * blindly repeating samples
+ * @param Cmd
+ * @return
+ */
+int CmdUndec(const char *Cmd)
+{
+	if(param_getchar(Cmd, 0) == 'h')
+	{
+		PrintAndLog("Usage: data undec [factor]");
+		PrintAndLog("This function performs un-decimation, by repeating each sample N times");
+		PrintAndLog("Options:        ");
+		PrintAndLog("       h            This help");
+		PrintAndLog("       factor       The number of times to repeat each sample.[default:2]");
+		PrintAndLog("Example: 'data undec 3'");
+		return 0;
+	}
+
+	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;
+	while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
+	{
+		int count = 0;
+		for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
+			swap[s_index+count] = GraphBuffer[g_index];
+		s_index+=count;
+	}
+
+	memcpy(GraphBuffer,swap, s_index * sizeof(int));
+	GraphTraceLen = s_index;
+	RepaintGraphWindow();
+	return 0;
+}
+
+//by marshmellow
+//shift graph zero up or down based on input + or -
+int CmdGraphShiftZero(const char *Cmd)
+{
+
+	int shift=0;
+	//set options from parameters entered with the command
+	sscanf(Cmd, "%i", &shift);
+	int shiftedVal=0;
+	for(int i = 0; i<GraphTraceLen; i++){
+		shiftedVal=GraphBuffer[i]+shift;
+		if (shiftedVal>127) 
+			shiftedVal=127;
+		else if (shiftedVal<-127) 
+			shiftedVal=-127;
+		GraphBuffer[i]= shiftedVal;
+	}
+	CmdNorm("");
+	return 0;
+}
+
+//by marshmellow
+//use large jumps in read samples to identify edges of waves and then amplify that wave to max
+//similar to dirtheshold, threshold commands 
+//takes a threshold length which is the measured length between two samples then determines an edge
+int CmdAskEdgeDetect(const char *Cmd)
+{
+	int thresLen = 25;
+	sscanf(Cmd, "%i", &thresLen); 
+
+	for(int i = 1; i<GraphTraceLen; i++){
+		if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
+			GraphBuffer[i-1] = 127;
+		else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
+			GraphBuffer[i-1] = -127;
+	}
+	RepaintGraphWindow();
+	return 0;
 }
 
 /* Print our clock rate */
+// uses data from graphbuffer
+// adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
 int CmdDetectClockRate(const char *Cmd)
 {
-  int clock = DetectClock(0);
-  PrintAndLog("Auto-detected clock rate: %d", clock);
-  return 0;
+	char cmdp = param_getchar(Cmd, 0);
+	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("     <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("            data detectclock f    = detect the clock of an fsk modulated wave in the GraphBuffer");
+		PrintAndLog("            data detectclock p    = detect the clock of an psk modulated wave in the GraphBuffer");
+		PrintAndLog("            data detectclock n    = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
+	}
+	int ans=0;
+	if (cmdp == 'a'){
+		ans = GetAskClock(Cmd+1, true, false);
+	} else if (cmdp == 'f'){
+		ans = GetFskClock("", true, false);
+	} else if (cmdp == 'n'){
+		ans = GetNrzClock("", true, false);
+	} else if (cmdp == 'p'){
+		ans = GetPskClock("", true, false);
+	} else {
+		PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
+	}
+	return ans;
+}
+
+char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
+{
+	char *fskType;
+	if (fchigh==10 && fclow==8){
+		if (invert) //fsk2a
+			fskType = "FSK2a";
+		else //fsk2
+			fskType = "FSK2";
+	} else if (fchigh == 8 && fclow == 5) {
+		if (invert)
+			fskType = "FSK1";
+		else
+			fskType = "FSK1a";
+	} else {
+		fskType = "FSK??";
+	}
+	return fskType;
 }
-/*
-uint32_t bytebits_to_byte(uint8_t *src, int numbits)
+
+//by marshmellow
+//fsk raw demod and print binary
+//takes 4 arguments - Clock, invert, fchigh, fclow
+//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
+int FSKrawDemod(const char *Cmd, bool verbose)
 {
-  uint32_t num = 0;
-  for(int i = 0 ; i < numbits ; i++)
-  {
-    num = (num << 1) | (*src);
-    src++;
-  }
-  return num;
+	//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;
+
+	//set options from parameters entered with the command
+	sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
+
+	if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
+		 if (rfLen==1){
+			invert = 1;   //if invert option only is used
+			rfLen = 0;
+		 }
+	}
+
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	size_t BitLen = getFromGraphBuf(BitStream);
+	if (BitLen==0) return 0;
+	//get field clock lengths
+	uint16_t fcs=0;
+	if (fchigh==0 || fclow == 0){
+		fcs = countFC(BitStream, BitLen, 1);
+		if (fcs==0){
+			fchigh=10;
+			fclow=8;
+		}else{
+			fchigh = (fcs >> 8) & 0xFF;
+			fclow = fcs & 0xFF;
+		}
+	}
+	//get bit clock length
+	if (rfLen==0){
+		rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
+		if (rfLen == 0) 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);
+
+		// 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));
+			printDemodBuff();
+		}
+
+		return 1;
+	} else{
+		if (g_debugMode) PrintAndLog("no FSK data found");
+	}
+	return 0;
 }
-*/
+
 //by marshmellow
 //fsk raw demod and print binary
-//takes 2 arguments - Clock and invert
-//defaults: clock = 50, invert=0
+//takes 4 arguments - Clock, invert, fchigh, fclow
+//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
 int CmdFSKrawdemod(const char *Cmd)
 {
-  //raw fsk demod  no manchester decoding no start bit finding just get binary from wave
-  //set defaults
-  uint8_t rfLen = 50;
-  uint8_t invert=0;
-  //set options from parameters entered with the command
-  if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
-     rfLen=param_get8(Cmd, 0); //if rfLen option only is used
-     if (rfLen==1){
-      invert=1;   //if invert option only is used
-      rfLen = 50;
-     } else if(rfLen==0) rfLen=50;
-  } 
-  if (strlen(Cmd)>2) {
-    rfLen=param_get8(Cmd, 0);  //if both options are used
-    invert=param_get8(Cmd,1);
-  }
-  PrintAndLog("Args invert: %d \nClock:%d",invert,rfLen);
-  uint32_t i=0;
-  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-  uint32_t BitLen = getFromGraphBuf(BitStream);
-  int size  = fskdemod(BitStream,BitLen,rfLen,invert); 
-  
-  PrintAndLog("FSK decoded bitstream:");
-  ClearGraph(0);
-  for (i=0;i<size;++i){
-    GraphBuffer[i]=BitStream[i];
-  }
-  GraphTraceLen=size;
-  RepaintGraphWindow();
-  
-  // Now output the bitstream to the scrollback by line of 16 bits
-  if(size > (7*32)+2) size = (7*32)+2; //only output a max of 7 blocks of 32 bits  most tags will have full bit stream inside that sample size
-  printBitStream(BitStream,size);
-  return 0;
+	char cmdp = param_getchar(Cmd, 0);
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
+		PrintAndLog("Usage:  data rawdemod fs [clock] <invert> [fchigh] [fclow]");
+		PrintAndLog("     [set clock as integer] optional, omit for autodetect.");
+		PrintAndLog("     <invert>, 1 for invert output, can be used even if the clock is omitted");
+		PrintAndLog("     [fchigh], larger field clock length, omit for autodetect");
+		PrintAndLog("     [fclow], small field clock length, omit for autodetect");
+		PrintAndLog("");
+		PrintAndLog("    sample: data rawdemod fs           = demod an fsk tag from GraphBuffer using autodetect");
+		PrintAndLog("          : data rawdemod fs 32        = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
+		PrintAndLog("          : data rawdemod fs 1         = demod an fsk tag from GraphBuffer using autodetect, invert output");   
+		PrintAndLog("          : data rawdemod fs 32 1      = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
+		PrintAndLog("          : data rawdemod fs 64 0 8 5  = demod an fsk1 RF/64 tag from GraphBuffer");
+		PrintAndLog("          : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
+		PrintAndLog("          : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
+		return 0;
+	}
+	return FSKrawDemod(Cmd, TRUE);
 }
 
 //by marshmellow (based on existing demod + holiman's refactor)
@@ -536,69 +994,134 @@ int CmdFSKrawdemod(const char *Cmd)
 //print full HID Prox ID and some bit format details if found
 int CmdFSKdemodHID(const char *Cmd)
 {
-  //raw fsk demod no manchester decoding no start bit finding just get binary from wave
-  uint32_t hi2=0, hi=0, lo=0;
-
-  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-  uint32_t BitLen = getFromGraphBuf(BitStream);
-  //get binary from fsk wave
-  size_t size  = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo); 
-  if (size<0){
-    PrintAndLog("Error demoding fsk");
-    return 0;
-  }
-  if (hi2 != 0){ //extra large HID tags
-    PrintAndLog("TAG ID: %x%08x%08x (%d)",
-       (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
-  }
-  else {  //standard HID tags <38 bits
-    //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd
-    uint8_t bitlen = 0;
-    uint32_t fc = 0;
-    uint32_t cardnum = 0;
-    if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
-      uint32_t lo2=0;
-      lo2=(((hi & 15) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
-      uint8_t idx3 = 1;
-      while(lo2>1){ //find last bit set to 1 (format len bit)
-        lo2=lo2>>1;
-        idx3++;
-      }
-      bitlen =idx3+19;  
-      fc =0;
-      cardnum=0;
-      if(bitlen==26){
-        cardnum = (lo>>1)&0xFFFF;
-        fc = (lo>>17)&0xFF;
-      }
-      if(bitlen==37){
-        cardnum = (lo>>1)&0x7FFFF;
-        fc = ((hi&0xF)<<12)|(lo>>20);
-      }
-      if(bitlen==34){
-        cardnum = (lo>>1)&0xFFFF;
-        fc= ((hi&1)<<15)|(lo>>17);
-      }
-      if(bitlen==35){
-        cardnum = (lo>>1)&0xFFFFF;
-        fc = ((hi&1)<<11)|(lo>>21);
-      }
-    }
-    else { //if bit 38 is not set then 37 bit format is used
-      bitlen= 37;
-      fc =0;
-      cardnum=0;
-      if(bitlen==37){
-        cardnum = (lo>>1)&0x7FFFF;
-        fc = ((hi&0xF)<<12)|(lo>>20);
-      }
-    }    
-    PrintAndLog("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
-      (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
-      (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum);
-    return 0;
-  }
-  return 0;
+	//raw fsk demod no manchester decoding no start bit finding just get binary from wave
+	uint32_t hi2=0, hi=0, lo=0;
+
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	size_t BitLen = getFromGraphBuf(BitStream);
+	if (BitLen==0) return 0;
+	//get binary from fsk wave
+	int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
+	if (idx<0){
+		if (g_debugMode){
+			if (idx==-1){
+				PrintAndLog("DEBUG: Just Noise Detected");
+			} else if (idx == -2) {
+				PrintAndLog("DEBUG: Error demoding fsk");
+			} else if (idx == -3) {
+				PrintAndLog("DEBUG: Preamble not found");
+			} else if (idx == -4) {
+				PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
+			} else {
+				PrintAndLog("DEBUG: Error demoding fsk %d", idx);
+			}   
+		}
+		return 0;
+	}
+	if (hi2==0 && hi==0 && lo==0) {
+		if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
+		return 0;
+	}
+	if (hi2 != 0){ //extra large HID tags
+		PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
+			 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
+	}
+	else {  //standard HID tags <38 bits
+		uint8_t fmtLen = 0;
+		uint32_t fc = 0;
+		uint32_t cardnum = 0;
+		if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
+			uint32_t lo2=0;
+			lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
+			uint8_t idx3 = 1;
+			while(lo2>1){ //find last bit set to 1 (format len bit)
+				lo2=lo2>>1;
+				idx3++;
+			}
+			fmtLen =idx3+19;
+			fc =0;
+			cardnum=0;
+			if(fmtLen==26){
+				cardnum = (lo>>1)&0xFFFF;
+				fc = (lo>>17)&0xFF;
+			}
+			if(fmtLen==34){
+				cardnum = (lo>>1)&0xFFFF;
+				fc= ((hi&1)<<15)|(lo>>17);
+			}
+			if(fmtLen==35){
+				cardnum = (lo>>1)&0xFFFFF;
+				fc = ((hi&1)<<11)|(lo>>21);
+			}
+		}
+		else { //if bit 38 is not set then 37 bit format is used
+			fmtLen = 37;
+			fc = 0;
+			cardnum = 0;
+			if(fmtLen == 37){
+				cardnum = (lo>>1)&0x7FFFF;
+				fc = ((hi&0xF)<<12)|(lo>>20);
+			}
+		}
+		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);
+	}
+	setDemodBuf(BitStream,BitLen,idx);
+	if (g_debugMode){ 
+		PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
+		printDemodBuff();
+	}
+	return 1;
+}
+
+//by marshmellow
+//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
+//print full Paradox Prox ID and some bit format details if found
+int CmdFSKdemodParadox(const char *Cmd)
+{
+	//raw fsk demod no manchester decoding no start bit finding just get binary from wave
+	uint32_t hi2=0, hi=0, lo=0;
+
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	size_t BitLen = getFromGraphBuf(BitStream);
+	if (BitLen==0) return 0;
+	//get binary from fsk wave
+	int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
+	if (idx<0){
+		if (g_debugMode){
+			if (idx==-1){
+				PrintAndLog("DEBUG: Just Noise Detected");     
+			} else if (idx == -2) {
+				PrintAndLog("DEBUG: Error demoding fsk");
+			} else if (idx == -3) {
+				PrintAndLog("DEBUG: Preamble not found");
+			} else if (idx == -4) {
+				PrintAndLog("DEBUG: Error in Manchester data");
+			} else {
+				PrintAndLog("DEBUG: Error demoding fsk %d", idx);
+			}
+		}
+		return 0;
+	}
+	if (hi2==0 && hi==0 && lo==0){
+		if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
+		return 0;
+	}
+	uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
+	uint32_t cardnum = (lo>>10)&0xFFFF;
+	uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
+	uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
+	uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
+
+	PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
+		hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
+	setDemodBuf(BitStream,BitLen,idx);
+	if (g_debugMode){ 
+		PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
+		printDemodBuff();
+	}
+	return 1;
 }
 
 //by marshmellow
@@ -606,735 +1129,1196 @@ int CmdFSKdemodHID(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; 
-  //test samples are not just noise
-  if (GraphTraceLen < 64) return 0;
-  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
-  uint32_t BitLen = getFromGraphBuf(BitStream);
-  //get binary from fsk wave
-  idx = IOdemodFSK(BitStream,BitLen); 
-  if (idx<0){
-    PrintAndLog("Error demoding fsk");
-    return 0;
-  }
-  if (idx==0){
-    PrintAndLog("IO Prox Data not found - FSK Data:");
-    printBitStream(BitStream,92);
-  }
-    //Index map
-    //0           10          20          30          40          50          60
-    //|           |           |           |           |           |           |
-    //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
-    //-----------------------------------------------------------------------------
-    //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
-    //
-    //XSF(version)facility:codeone+codetwo (raw)
-    //Handle the data
-        
-  PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx],    BitStream[idx+1],  BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
-  PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9],  BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);       
-  PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
-  PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
-  PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
-  PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
-  PrintAndLog("%d%d%d%d%d%d%d%d %d%d",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
-
-  uint32_t code = bytebits_to_byte(BitStream+idx,32);
-  uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32); 
-  short version = bytebits_to_byte(BitStream+idx+27,8); //14,4
-  uint8_t facilitycode = bytebits_to_byte(BitStream+idx+19,8) ;
-  uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
-  
-  PrintAndLog("XSF(%02d)%02x:%d (%08x%08x)",version,facilitycode,number,code,code2);    
-  return 0;
-}
-int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating
-{
-  static const int LowTone[]  = {
-    1,  1,  1,  1,  1, -1, -1, -1, -1, -1,
-    1,  1,  1,  1,  1, -1, -1, -1, -1, -1,
-    1,  1,  1,  1,  1, -1, -1, -1, -1, -1,
-    1,  1,  1,  1,  1, -1, -1, -1, -1, -1,
-    1,  1,  1,  1,  1, -1, -1, -1, -1, -1
-  };
-  static const int HighTone[] = {
-    1,  1,  1,  1,  1,     -1, -1, -1, -1,
-    1,  1,  1,  1,         -1, -1, -1, -1,
-    1,  1,  1,  1,         -1, -1, -1, -1,
-    1,  1,  1,  1,         -1, -1, -1, -1,
-    1,  1,  1,  1,         -1, -1, -1, -1,
-    1,  1,  1,  1,     -1, -1, -1, -1, -1,
-  };
-
-  int lowLen = sizeof (LowTone) / sizeof (int);
-  int highLen = sizeof (HighTone) / sizeof (int);
-  int convLen = (highLen > lowLen) ? highLen : lowLen; //if highlen > lowLen then highlen else lowlen
-  uint32_t hi = 0, lo = 0;
-
-  int i, j;
-  int minMark = 0, maxMark = 0;
-  
-  for (i = 0; i < GraphTraceLen - convLen; ++i) {
-    int lowSum = 0, highSum = 0;
-
-    for (j = 0; j < lowLen; ++j) {
-      lowSum += LowTone[j]*GraphBuffer[i+j];
-    }
-    for (j = 0; j < highLen; ++j) {
-      highSum += HighTone[j] * GraphBuffer[i + j];
-    }
-    lowSum = abs(100 * lowSum / lowLen);
-    highSum = abs(100 * highSum / highLen);
-    GraphBuffer[i] = (highSum << 16) | lowSum;
-  }
-
-  for(i = 0; i < GraphTraceLen - convLen - 16; ++i) {
-    int lowTot = 0, highTot = 0;
-    // 10 and 8 are f_s divided by f_l and f_h, rounded
-    for (j = 0; j < 10; ++j) {
-      lowTot += (GraphBuffer[i+j] & 0xffff);
-    }
-    for (j = 0; j < 8; j++) {
-      highTot += (GraphBuffer[i + j] >> 16);
-    }
-    GraphBuffer[i] = lowTot - highTot;
-    if (GraphBuffer[i] > maxMark) maxMark = GraphBuffer[i];
-    if (GraphBuffer[i] < minMark) minMark = GraphBuffer[i];
-  }
-
-  GraphTraceLen -= (convLen + 16);
-  RepaintGraphWindow();
-
-  // Find bit-sync (3 lo followed by 3 high) (HID ONLY)
-  int max = 0, maxPos = 0;
-  for (i = 0; i < 6000; ++i) {
-    int dec = 0;
-    for (j = 0; j < 3 * lowLen; ++j) {
-      dec -= GraphBuffer[i + j];
-    }
-    for (; j < 3 * (lowLen + highLen ); ++j) {
-      dec += GraphBuffer[i + j];
-    }
-    if (dec > max) {
-      max = dec;
-      maxPos = i;
-    }
-  }
-
-  // place start of bit sync marker in graph
-  GraphBuffer[maxPos] = maxMark;
-  GraphBuffer[maxPos + 1] = minMark;
-
-  maxPos += j;
-
-  // place end of bit sync marker in graph
-  GraphBuffer[maxPos] = maxMark;
-  GraphBuffer[maxPos+1] = minMark;
-
-  PrintAndLog("actual data bits start at sample %d", maxPos);
-  PrintAndLog("length %d/%d", highLen, lowLen);
-
-  uint8_t bits[46];
-  bits[sizeof(bits)-1] = '\0';
-
-  // find bit pairs and manchester decode them
-  for (i = 0; i < arraylen(bits) - 1; ++i) {
-    int dec = 0;
-    for (j = 0; j < lowLen; ++j) {
-      dec -= GraphBuffer[maxPos + j];
-    }
-    for (; j < lowLen + highLen; ++j) {
-      dec += GraphBuffer[maxPos + j];
-    }
-    maxPos += j;
-    // place inter bit marker in graph
-    GraphBuffer[maxPos] = maxMark;
-    GraphBuffer[maxPos + 1] = minMark;
-
-    // hi and lo form a 64 bit pair
-    hi = (hi << 1) | (lo >> 31);
-    lo = (lo << 1);
-    // store decoded bit as binary (in hi/lo) and text (in bits[])
-    if(dec < 0) {
-      bits[i] = '1';
-      lo |= 1;
-    } else {
-      bits[i] = '0';
-    }
-  }
-  PrintAndLog("bits: '%s'", bits);
-  PrintAndLog("hex: %08x %08x", hi, lo);
-  return 0;
+	//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) {
+		if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
+		return 0;
+	}
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	size_t BitLen = getFromGraphBuf(BitStream);
+	if (BitLen==0) return 0;
+
+	//get binary from fsk wave
+	idx = IOdemodFSK(BitStream,BitLen);
+	if (idx<0){
+		if (g_debugMode){
+			if (idx==-1){
+				PrintAndLog("DEBUG: Just Noise Detected");     
+			} else if (idx == -2) {
+				PrintAndLog("DEBUG: not enough samples");
+			} else if (idx == -3) {
+				PrintAndLog("DEBUG: error during fskdemod");        
+			} else if (idx == -4) {
+				PrintAndLog("DEBUG: Preamble not found");
+			} else if (idx == -5) {
+				PrintAndLog("DEBUG: Separator bits not found");
+			} else {
+				PrintAndLog("DEBUG: Error demoding fsk %d", idx);
+			}
+		}
+		return 0;
+	}
+	if (idx==0){
+		if (g_debugMode){
+			PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
+			if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
+		} 
+		return 0;
+	}
+		//Index map
+		//0           10          20          30          40          50          60
+		//|           |           |           |           |           |           |
+		//01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
+		//-----------------------------------------------------------------------------
+		//00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
+		//
+		//XSF(version)facility:codeone+codetwo (raw)
+		//Handle the data
+	if (idx+64>BitLen) {
+		if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
+		return 0;
+	}
+	PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx],    BitStream[idx+1],  BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
+	PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9],  BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
+	PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
+	PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
+	PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
+	PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
+	PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
+
+	uint32_t code = bytebits_to_byte(BitStream+idx,32);
+	uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
+	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
+	uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
+	uint16_t calccrc = 0;
+
+	for (uint8_t i=1; i<6; ++i){
+		calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
+	}
+	calccrc &= 0xff;
+	calccrc = 0xff - calccrc;
+
+	char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
+
+	PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
+	setDemodBuf(BitStream,64,idx);
+	if (g_debugMode){
+		PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
+		printDemodBuff();
+	}
+	return 1;
+}
+
+//by marshmellow
+//AWID Prox demod - FSK RF/50 with preamble of 00000001  (always a 96 bit data stream)
+//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;
+
+	//get binary from fsk wave
+	int idx = AWIDdemodFSK(BitStream, &size);
+	if (idx<=0){
+		if (g_debugMode==1){
+			if (idx == -1)
+				PrintAndLog("DEBUG: Error - not enough samples");
+			else if (idx == -2)
+				PrintAndLog("DEBUG: Error - only noise found");
+			else if (idx == -3)
+				PrintAndLog("DEBUG: Error - problem during FSK demod");
+			else if (idx == -4)
+				PrintAndLog("DEBUG: Error - AWID preamble not found");
+			else if (idx == -5)
+				PrintAndLog("DEBUG: Error - Size not correct: %d", size);
+			else
+				PrintAndLog("DEBUG: Error %d",idx);
+		}
+		return 0;
+	}
+
+	// Index map
+	// 0            10            20            30              40            50              60
+	// |            |             |             |               |             |               |
+	// 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
+	// -----------------------------------------------------------------------------
+	// 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
+	// premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
+	//          |---26 bit---|    |-----117----||-------------142-------------|
+	// b = format bit len, o = odd parity of last 3 bits
+	// f = facility code, c = card number
+	// w = wiegand parity
+	// (26 bit format shown)
+ 
+	//get raw ID before removing parities
+	uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
+	uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
+	uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
+	setDemodBuf(BitStream,96,idx);
+
+	size = removeParity(BitStream, idx+8, 4, 1, 88);
+	if (size != 66){
+		if (g_debugMode==1) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
+		return 0;
+	}
+	// ok valid card found!
+
+	// Index map
+	// 0           10         20        30          40        50        60
+	// |           |          |         |           |         |         |
+	// 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
+	// -----------------------------------------------------------------------------
+	// 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
+	// bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+	// |26 bit|   |-117--| |-----142------|
+	// b = format bit len, o = odd parity of last 3 bits
+	// f = facility code, c = card number
+	// w = wiegand parity
+	// (26 bit format shown)
+
+	uint32_t fc = 0;
+	uint32_t cardnum = 0;
+	uint32_t code1 = 0;
+	uint32_t code2 = 0;
+	uint8_t fmtLen = bytebits_to_byte(BitStream,8);
+	if (fmtLen==26){
+		fc = bytebits_to_byte(BitStream+9, 8);
+		cardnum = bytebits_to_byte(BitStream+17, 16);
+		code1 = bytebits_to_byte(BitStream+8,fmtLen);
+		PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
+	} else {
+		cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
+		if (fmtLen>32){
+			code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
+			code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
+			PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
+		} else{
+			code1 = bytebits_to_byte(BitStream+8,fmtLen);
+			PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
+		}
+	}
+	if (g_debugMode){
+		PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
+		printDemodBuff();
+	}
+	//todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
+	return 1;
+}
+
+//by marshmellow
+//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001  (always a 128 bit data stream)
+//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
+int CmdFSKdemodPyramid(const char *Cmd)
+{
+	//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;
+
+	//get binary from fsk wave
+	int idx = PyramiddemodFSK(BitStream, &size);
+	if (idx < 0){
+		if (g_debugMode==1){
+			if (idx == -5)
+				PrintAndLog("DEBUG: Error - not enough samples");
+			else if (idx == -1)
+				PrintAndLog("DEBUG: Error - only noise found");
+			else if (idx == -2)
+				PrintAndLog("DEBUG: Error - problem during FSK demod");
+			else if (idx == -3)
+				PrintAndLog("DEBUG: Error - Size not correct: %d", size);
+			else if (idx == -4)
+				PrintAndLog("DEBUG: Error - Pyramid preamble not found");
+			else
+				PrintAndLog("DEBUG: Error - idx: %d",idx);
+		}
+		return 0;
+	}
+	// Index map
+	// 0           10          20          30            40          50          60
+	// |           |           |           |             |           |           |
+	// 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
+	// -----------------------------------------------------------------------------
+	// 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
+	// premable  xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
+
+	// 64    70            80          90          100         110           120
+	// |     |             |           |           |           |             |
+	// 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
+	// -----------------------------------------------------------------------------
+	// 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
+	// xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
+	//                                  |---115---||---------71---------|
+	// s = format start bit, o = odd parity of last 7 bits
+	// f = facility code, c = card number
+	// w = wiegand parity, x = extra space for other formats
+	// p = unknown checksum
+	// (26 bit format shown)
+
+	//get bytes for checksum calc
+	uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
+	uint8_t csBuff[14] = {0x00};
+	for (uint8_t i = 0; i < 13; i++){
+		csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
+	}
+	//check checksum calc
+	//checksum calc thanks to ICEMAN!!
+	uint32_t checkCS =  CRC8Maxim(csBuff,13);
+
+	//get raw ID before removing parities
+	uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
+	uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
+	uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
+	uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
+	setDemodBuf(BitStream,128,idx);
+
+	size = removeParity(BitStream, idx+8, 8, 1, 120);
+	if (size != 105){
+		if (g_debugMode==1) 
+			PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
+		return 0;
+	}
+
+	// ok valid card found!
+
+	// Index map
+	// 0         10        20        30        40        50        60        70
+	// |         |         |         |         |         |         |         |
+	// 01234567890123456789012345678901234567890123456789012345678901234567890
+	// -----------------------------------------------------------------------
+	// 00000000000000000000000000000000000000000000000000000000000000000000000
+	// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+
+	// 71         80         90          100
+	// |          |          |           |
+	// 1 2 34567890 1234567890123456 7 8901234
+	// ---------------------------------------
+	// 1 1 01110011 0000000001000110 0 1001010
+	// s w ffffffff cccccccccccccccc w ppppppp
+	//     |--115-| |------71------|
+	// s = format start bit, o = odd parity of last 7 bits
+	// f = facility code, c = card number
+	// w = wiegand parity, x = extra space for other formats
+	// p = unknown checksum
+	// (26 bit format shown)
+
+	//find start bit to get fmtLen
+	int j;
+	for (j=0; j<size; j++){
+		if(BitStream[j]) break;
+	}
+	uint8_t fmtLen = size-j-8;
+	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);
+		code1 = bytebits_to_byte(BitStream+72,fmtLen);
+		PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
+	} else if (fmtLen==45){
+		fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
+		fc = bytebits_to_byte(BitStream+53, 10);
+		cardnum = bytebits_to_byte(BitStream+63, 32);
+		PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+	} else {
+		cardnum = bytebits_to_byte(BitStream+81, 16);
+		if (fmtLen>32){
+			//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
+			//code2 = bytebits_to_byte(BitStream+(size-32),32);
+			PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+		} else{
+			//code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
+			PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+		}
+	}
+	if (checksum == checkCS)
+		PrintAndLog("Checksum %02x passed", checksum);
+	else
+		PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
+
+	if (g_debugMode){
+		PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
+		printDemodBuff();
+	}
+	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)
+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;
+	}
+
+	setDemodBuf(BitStream, 128, preambleIndex);
+
+	// remove but don't verify parity. (pType = 2)
+	size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
+	if ( size <= 103 ) {
+		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)
+{
+	int invert=0;
+	int clk=0;
+	int maxErr=100;
+	sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
+	if (clk==1){
+		invert=1;
+		clk=0;
+	}
+	if (invert != 0 && invert != 1) {
+		if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
+		return 0;
+	}
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	size_t BitLen = getFromGraphBuf(BitStream);
+	if (BitLen==0) return 0;
+	uint8_t carrier=countFC(BitStream, BitLen, 0);
+	if (carrier!=2 && carrier!=4 && carrier!=8){
+		//invalid carrier
+		return 0;
+	}
+	int errCnt=0;
+	errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
+	if (errCnt > maxErr){
+		if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+		return 0;
+	} 
+	if (errCnt<0|| BitLen<16){  //throw away static - allow 1 and -1 (in case of threshold command first)
+		if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+		return 0;
+	}
+	if (verbose || g_debugMode){
+		PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
+		if (errCnt>0){
+			PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
+		}
+	}
+	//prime demod buffer for output
+	setDemodBuf(BitStream,BitLen,0);
+	return 1;
+}
+
+// Indala 26 bit decode
+// by marshmellow
+// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
+int CmdIndalaDecode(const char *Cmd)
+{
+	int ans;
+	if (strlen(Cmd)>0){
+		ans = PSKDemod(Cmd, 0);
+	} else{ //default to RF/32
+		ans = PSKDemod("32", 0);
+	}
+
+	if (!ans){
+		if (g_debugMode==1) 
+			PrintAndLog("Error1: %d",ans);
+		return 0;
+	}
+	uint8_t invert=0;
+	ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
+	if (ans < 1) {
+		if (g_debugMode==1)
+			PrintAndLog("Error2: %d",ans);
+		return -1;
+	}
+	char showbits[251]={0x00};
+	if (invert)
+		if (g_debugMode==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);
+	}
+	if (g_debugMode){
+		PrintAndLog("DEBUG: printing demodbuffer:");
+		printDemodBuff();
+	}
+	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
+int NRZrawDemod(const char *Cmd, bool verbose)
+{
+	int invert=0;
+	int clk=0;
+	int maxErr=100;
+	sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
+	if (clk==1){
+		invert=1;
+		clk=0;
+	}
+	if (invert != 0 && invert != 1) {
+		PrintAndLog("Invalid argument: %s", Cmd);
+		return 0;
+	}
+	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+	size_t BitLen = getFromGraphBuf(BitStream);
+	if (BitLen==0) return 0;
+	int errCnt=0;
+	errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
+	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<0 || BitLen<16){  //throw away static - allow 1 and -1 (in case of threshold command first)
+		if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+		return 0;
+	}
+	if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+	//prime demod buffer for output
+	setDemodBuf(BitStream,BitLen,0);
+
+	if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
+	if (verbose || g_debugMode) {
+		PrintAndLog("NRZ demoded bitstream:");
+		// Now output the bitstream to the scrollback by line of 16 bits
+		printDemodBuff();
+	}
+	return 1; 
+}
+
+int CmdNRZrawDemod(const char *Cmd)
+{
+	char cmdp = param_getchar(Cmd, 0);
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
+		PrintAndLog("Usage:  data rawdemod nr [clock] <0|1> [maxError]");
+		PrintAndLog("     [set clock as integer] optional, if not set, autodetect.");
+		PrintAndLog("     <invert>, 1 for invert output");
+		PrintAndLog("     [set maximum allowed errors], default = 100.");
+		PrintAndLog("");
+		PrintAndLog("    sample: data rawdemod nr        = demod a nrz/direct tag from GraphBuffer");
+		PrintAndLog("          : data rawdemod nr 32     = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
+		PrintAndLog("          : data rawdemod nr 32 1   = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
+		PrintAndLog("          : data rawdemod nr 1      = demod a nrz/direct tag from GraphBuffer while inverting data");
+		PrintAndLog("          : data rawdemod nr 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
+		return 0;
+	}
+	return NRZrawDemod(Cmd, TRUE);
+}
+
+// by marshmellow
+// takes 3 arguments - clock, invert, maxErr as integers
+// attempts to demodulate psk only
+// prints binary found and saves in demodbuffer for further commands
+int CmdPSK1rawDemod(const char *Cmd)
+{
+	int ans;
+	char cmdp = param_getchar(Cmd, 0);
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
+		PrintAndLog("Usage:  data rawdemod p1 [clock] <0|1> [maxError]");
+		PrintAndLog("     [set clock as integer] optional, if not set, autodetect.");
+		PrintAndLog("     <invert>, 1 for invert output");
+		PrintAndLog("     [set maximum allowed errors], default = 100.");
+		PrintAndLog("");
+		PrintAndLog("    sample: data rawdemod p1        = demod a psk1 tag from GraphBuffer");
+		PrintAndLog("          : data rawdemod p1 32     = demod a psk1 tag from GraphBuffer using a clock of RF/32");
+		PrintAndLog("          : data rawdemod p1 32 1   = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
+		PrintAndLog("          : data rawdemod p1 1      = demod a psk1 tag from GraphBuffer while inverting data");
+		PrintAndLog("          : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
+		return 0;
+	}
+	ans = PSKDemod(Cmd, TRUE);
+	//output
+	if (!ans){
+		if (g_debugMode) PrintAndLog("Error demoding: %d",ans); 
+		return 0;
+	}
+ 
+	PrintAndLog("PSK1 demoded bitstream:");
+	// Now output the bitstream to the scrollback by line of 16 bits
+	printDemodBuff();
+	return 1;
+}
+
+// by marshmellow
+// takes same args as cmdpsk1rawdemod
+int CmdPSK2rawDemod(const char *Cmd)
+{
+	int ans=0;
+	char cmdp = param_getchar(Cmd, 0);
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
+		PrintAndLog("Usage:  data rawdemod p2 [clock] <0|1> [maxError]");
+		PrintAndLog("     [set clock as integer] optional, if not set, autodetect.");
+		PrintAndLog("     <invert>, 1 for invert output");
+		PrintAndLog("     [set maximum allowed errors], default = 100.");
+		PrintAndLog("");
+		PrintAndLog("    sample: data rawdemod p2         = demod a psk2 tag from GraphBuffer, autodetect clock");
+		PrintAndLog("          : data rawdemod p2 32      = demod a psk2 tag from GraphBuffer using a clock of RF/32");
+		PrintAndLog("          : data rawdemod p2 32 1    = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
+		PrintAndLog("          : data rawdemod p2 1       = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
+		PrintAndLog("          : data rawdemod p2 64 1 0  = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
+		return 0;
+	}
+	ans=PSKDemod(Cmd, TRUE);
+	if (!ans){
+		if (g_debugMode) PrintAndLog("Error demoding: %d",ans);  
+		return 0;
+	} 
+	psk1TOpsk2(DemodBuffer, DemodBufferLen);
+	PrintAndLog("PSK2 demoded bitstream:");
+	// Now output the bitstream to the scrollback by line of 16 bits
+	printDemodBuff();  
+	return 1;
+}
+
+// by marshmellow - combines all raw demod functions into one menu command
+int CmdRawDemod(const char *Cmd)
+{
+	char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
+
+	if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
+		PrintAndLog("Usage:  data rawdemod [modulation] <help>|<options>");
+		PrintAndLog("   [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");		
+		PrintAndLog("         'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
+		PrintAndLog("   <help> as 'h', prints the help for the specific modulation");	
+		PrintAndLog("   <options> see specific modulation help for optional parameters");				
+		PrintAndLog("");
+		PrintAndLog("    sample: data rawdemod fs h         = print help specific to fsk demod");
+		PrintAndLog("          : data rawdemod fs           = demod GraphBuffer using: fsk - autodetect");
+		PrintAndLog("          : data rawdemod ab           = demod GraphBuffer using: ask/biphase - autodetect");
+		PrintAndLog("          : data rawdemod am           = demod GraphBuffer using: ask/manchester - autodetect");
+		PrintAndLog("          : data rawdemod ar           = demod GraphBuffer using: ask/raw - autodetect");
+		PrintAndLog("          : data rawdemod nr           = demod GraphBuffer using: nrz/direct - autodetect");
+		PrintAndLog("          : data rawdemod p1           = demod GraphBuffer using: psk1 - autodetect");
+		PrintAndLog("          : data rawdemod p2           = demod GraphBuffer using: psk2 - autodetect");
+		return 0;
+	}
+	char cmdp2 = Cmd[1];
+	int ans = 0;
+	if (cmdp == 'f' && cmdp2 == 's'){
+		ans = CmdFSKrawdemod(Cmd+2);
+	} else if(cmdp == 'a' && cmdp2 == 'b'){
+		ans = Cmdaskbiphdemod(Cmd+2);
+	} else if(cmdp == 'a' && cmdp2 == 'm'){
+		ans = Cmdaskmandemod(Cmd+2);
+	} else if(cmdp == 'a' && cmdp2 == 'r'){
+		ans = Cmdaskrawdemod(Cmd+2);
+	} else if(cmdp == 'n' && cmdp2 == 'r'){
+		ans = CmdNRZrawDemod(Cmd+2);
+	} else if(cmdp == 'p' && cmdp2 == '1'){
+		ans = CmdPSK1rawDemod(Cmd+2);
+	} else if(cmdp == 'p' && cmdp2 == '2'){
+		ans = CmdPSK2rawDemod(Cmd+2);
+	} else { 
+		PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
+	}
+	return ans;
 }
 
 int CmdGrid(const char *Cmd)
 {
-  sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
-  PlotGridXdefault= PlotGridX;
-  PlotGridYdefault= PlotGridY;
-  RepaintGraphWindow();
-  return 0;
+	sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
+	PlotGridXdefault= PlotGridX;
+	PlotGridYdefault= PlotGridY;
+	RepaintGraphWindow();
+	return 0;
 }
 
 int CmdHexsamples(const char *Cmd)
 {
-  int i, j;
-  int requested = 0;
-  int offset = 0;
-  char string_buf[25];
-  char* string_ptr = string_buf;
-  uint8_t got[40000];
- 
-  sscanf(Cmd, "%i %i", &requested, &offset);
-
-  /* if no args send something */
-  if (requested == 0) {
-    requested = 8;
-  }
-  if (offset + requested > sizeof(got)) {
-    PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > 40000");
-    return 0;
-  } 
-
-  GetFromBigBuf(got,requested,offset);
-  WaitForResponse(CMD_ACK,NULL);
-
-  i = 0;
-  for (j = 0; j < requested; j++) {
-    i++;
-    string_ptr += sprintf(string_ptr, "%02x ", got[j]);
-    if (i == 8) {
-      *(string_ptr - 1) = '\0';    // remove the trailing space
-      PrintAndLog("%s", string_buf);
-      string_buf[0] = '\0';
-      string_ptr = string_buf;
-      i = 0;
-    }
-    if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
-      *(string_ptr - 1) = '\0';
-      PrintAndLog("%s", string_buf);
-      string_buf[0] = '\0';
-    }  
-  }
-  return 0;
+	int i, j;
+	int requested = 0;
+	int offset = 0;
+	char string_buf[25];
+	char* string_ptr = string_buf;
+	uint8_t got[BIGBUF_SIZE];
+
+	sscanf(Cmd, "%i %i", &requested, &offset);
+
+	/* if no args send something */
+	if (requested == 0) {
+		requested = 8;
+	}
+	if (offset + requested > sizeof(got)) {
+		PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
+		return 0;
+	}
+
+	GetFromBigBuf(got,requested,offset);
+	WaitForResponse(CMD_ACK,NULL);
+
+	i = 0;
+	for (j = 0; j < requested; j++) {
+		i++;
+		string_ptr += sprintf(string_ptr, "%02x ", got[j]);
+		if (i == 8) {
+			*(string_ptr - 1) = '\0';    // remove the trailing space
+			PrintAndLog("%s", string_buf);
+			string_buf[0] = '\0';
+			string_ptr = string_buf;
+			i = 0;
+		}
+		if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
+			*(string_ptr - 1) = '\0';
+			PrintAndLog("%s", string_buf);
+			string_buf[0] = '\0';
+		}
+	}
+	return 0;
 }
 
 int CmdHide(const char *Cmd)
 {
-  HideGraphWindow();
-  return 0;
+	HideGraphWindow();
+	return 0;
 }
 
+//zero mean GraphBuffer
 int CmdHpf(const char *Cmd)
 {
-  int i;
-  int accum = 0;
+	int i;
+	int accum = 0;
 
-  for (i = 10; i < GraphTraceLen; ++i)
-    accum += GraphBuffer[i];
-  accum /= (GraphTraceLen - 10);
-  for (i = 0; i < GraphTraceLen; ++i)
-    GraphBuffer[i] -= accum;
+	for (i = 10; i < GraphTraceLen; ++i)
+		accum += GraphBuffer[i];
+	accum /= (GraphTraceLen - 10);
+	for (i = 0; i < GraphTraceLen; ++i)
+		GraphBuffer[i] -= accum;
 
-  RepaintGraphWindow();
-  return 0;
+	RepaintGraphWindow();
+	return 0;
+}
+typedef struct {
+	uint8_t * buffer;
+	uint32_t numbits;
+	uint32_t position;
+}BitstreamOut;
+
+bool _headBit( BitstreamOut *stream)
+{
+	int bytepos = stream->position >> 3; // divide by 8
+	int bitpos = (stream->position++) & 7; // mask out 00000111
+	return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
+}
+
+uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
+{
+	int i;
+	uint8_t val = 0;
+	for(i =0 ; i < bits_per_sample; i++)
+	{
+		val |= (_headBit(b) << (7-i));
+	}
+	return val;
+}
+
+int getSamples(const char *Cmd, bool silent)
+{
+	//If we get all but the last byte in bigbuf,
+	// we don't have to worry about remaining trash
+	// in the last byte in case the bits-per-sample
+	// does not line up on byte boundaries
+
+	uint8_t got[BIGBUF_SIZE-1] = { 0 };
+
+	int n = strtol(Cmd, NULL, 0);
+
+	if (n == 0)
+		n = sizeof(got);
+
+	if (n > sizeof(got))
+		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);
+	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);
+		bits_per_sample = sc->bits_per_sample;
+	}
+	if(bits_per_sample < 8)
+	{
+		PrintAndLog("Unpacking...");
+		BitstreamOut bout = { got, bits_per_sample * n,  0};
+		int j =0;
+		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;
+		}
+		GraphTraceLen = j;
+		PrintAndLog("Unpacked %d samples" , j );
+	}else
+	{
+		for (int j = 0; j < n; j++) {
+			GraphBuffer[j] = ((int)got[j]) - 128;
+		}
+		GraphTraceLen = n;
+	}
+
+	RepaintGraphWindow();
+	return 0;
 }
 
 int CmdSamples(const char *Cmd)
 {
-  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\n", n);
-  GetFromBigBuf(got,n,0);
-  WaitForResponse(CMD_ACK,NULL);
-  for (int j = 0; j < n; j++) {
-    GraphBuffer[cnt++] = ((int)got[j]) - 128;
-  }
-  
-  PrintAndLog("Done!\n");
-  GraphTraceLen = n;
-  RepaintGraphWindow();
-  return 0;
+	return getSamples(Cmd, false);
 }
 
 int CmdTuneSamples(const char *Cmd)
 {
-  int cnt = 0;
-  int n = 255;
-  uint8_t got[255];
-
-  PrintAndLog("Reading %d samples\n", n);
-  GetFromBigBuf(got,n,7256); // armsrc/apps.h: #define FREE_BUFFER_OFFSET 7256
-  WaitForResponse(CMD_ACK,NULL);
-  for (int j = 0; j < n; j++) {
-    GraphBuffer[cnt++] = ((int)got[j]) - 128;
-  }
-  
-  PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n");
-  PrintAndLog("\n");
-  GraphTraceLen = n;
-  RepaintGraphWindow();
-  return 0;
+	int timeout = 0;
+	printf("\nMeasuring antenna characteristics, please wait...");
+
+	UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
+	SendCommand(&c);
+
+	UsbCommand resp;
+	while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
+		timeout++;
+		printf(".");
+		if (timeout > 7) {
+			PrintAndLog("\nNo response from Proxmark. Aborting...");
+			return 1;
+		}
+	}
+
+	int peakv, peakf;
+	int vLf125, vLf134, vHf;
+	vLf125 = resp.arg[0] & 0xffff;
+	vLf134 = resp.arg[0] >> 16;
+	vHf = resp.arg[1] & 0xffff;;
+	peakf = resp.arg[2] & 0xffff;
+	peakv = resp.arg[2] >> 16;
+	PrintAndLog("");
+	PrintAndLog("# LF antenna: %5.2f V @   125.00 kHz", vLf125/1000.0);
+	PrintAndLog("# LF antenna: %5.2f V @   134.00 kHz", vLf134/1000.0);
+	PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
+	PrintAndLog("# HF antenna: %5.2f V @    13.56 MHz", vHf/1000.0);
+
+ #define LF_UNUSABLE_V		2948		// was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
+ #define LF_MARGINAL_V		14739		// was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
+ #define HF_UNUSABLE_V		3167		// was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
+ #define HF_MARGINAL_V		7917		// was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
+
+	if (peakv < LF_UNUSABLE_V)
+		PrintAndLog("# Your LF antenna is unusable.");
+	else if (peakv < LF_MARGINAL_V)
+		PrintAndLog("# Your LF antenna is marginal.");
+	if (vHf < HF_UNUSABLE_V)
+		PrintAndLog("# Your HF antenna is unusable.");
+	else if (vHf < HF_MARGINAL_V)
+		PrintAndLog("# Your HF antenna is marginal.");
+
+	if (peakv >= LF_UNUSABLE_V)	{
+		for (int i = 0; i < 256; i++) {
+			GraphBuffer[i] = resp.d.asBytes[i] - 128;
+		}
+		PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
+		PrintAndLog("\n");
+		GraphTraceLen = 256;
+		ShowGraphWindow();
+		RepaintGraphWindow();
+	}
+
+	return 0;
 }
 
+
 int CmdLoad(const char *Cmd)
 {
-  FILE *f = fopen(Cmd, "r");
-  if (!f) {
-    PrintAndLog("couldn't open '%s'", Cmd);
-    return 0;
-  }
-
-  GraphTraceLen = 0;
-  char line[80];
-  while (fgets(line, sizeof (line), f)) {
-    GraphBuffer[GraphTraceLen] = atoi(line);
-    GraphTraceLen++;
-  }
-  fclose(f);
-  PrintAndLog("loaded %d samples", GraphTraceLen);
-  RepaintGraphWindow();
-  return 0;
+	char filename[FILE_PATH_SIZE] = {0x00};
+	int len = 0;
+
+	len = strlen(Cmd);
+	if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+	memcpy(filename, Cmd, len);
+	
+	FILE *f = fopen(filename, "r");
+	if (!f) {
+		 PrintAndLog("couldn't open '%s'", filename);
+		return 0;
+	}
+
+	GraphTraceLen = 0;
+	char line[80];
+	while (fgets(line, sizeof (line), f)) {
+		GraphBuffer[GraphTraceLen] = atoi(line);
+		GraphTraceLen++;
+	}
+	fclose(f);
+	PrintAndLog("loaded %d samples", GraphTraceLen);
+	RepaintGraphWindow();
+	return 0;
 }
 
 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];
+	GraphTraceLen -= ds;
+
+	RepaintGraphWindow();
+	return 0;
+}
 
-  for (int i = ds; i < GraphTraceLen; ++i)
-    GraphBuffer[i-ds] = GraphBuffer[i];
-  GraphTraceLen -= ds;
+// trim graph to input argument length
+int CmdRtrim(const char *Cmd)
+{
+	int ds = atoi(Cmd);
 
-  RepaintGraphWindow();
-  return 0;
-}
+	GraphTraceLen = ds;
 
-/*
- * Manchester demodulate a bitstream. The bitstream needs to be already in
- * the GraphBuffer as 0 and 1 values
- *
- * Give the clock rate as argument in order to help the sync - the algorithm
- * resyncs at each pulse anyway.
- *
- * Not optimized by any means, this is the 1st time I'm writing this type of
- * routine, feel free to improve...
- *
- * 1st argument: clock rate (as number of samples per clock rate)
- *               Typical values can be 64, 32, 128...
- */
-int CmdManchesterDemod(const char *Cmd)
-{
-  int i, j, invert= 0;
-  int bit;
-  int clock;
-  int lastval = 0;
-  int low = 0;
-  int high = 0;
-  int hithigh, hitlow, first;
-  int lc = 0;
-  int bitidx = 0;
-  int bit2idx = 0;
-  int warnings = 0;
-
-  /* check if we're inverting output */
-  if (*Cmd == 'i')
-  {
-    PrintAndLog("Inverting output");
-    invert = 1;
-    ++Cmd;
-    do
-      ++Cmd;
-    while(*Cmd == ' '); // in case a 2nd argument was given
-  }
-
-  /* Holds the decoded bitstream: each clock period contains 2 bits       */
-  /* later simplified to 1 bit after manchester decoding.                 */
-  /* Add 10 bits to allow for noisy / uncertain traces without aborting   */
-  /* int BitStream[GraphTraceLen*2/clock+10]; */
-
-  /* But it does not work if compiling on WIndows: therefore we just allocate a */
-  /* large array */
-  uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0};
-
-  /* Detect high and lows */
-  for (i = 0; i < GraphTraceLen; i++)
-  {
-    if (GraphBuffer[i] > high)
-      high = GraphBuffer[i];
-    else if (GraphBuffer[i] < low)
-      low = GraphBuffer[i];
-  }
-
-  /* Get our clock */
-  clock = GetClock(Cmd, high, 1);
-
-  int tolerance = clock/4;
-
-  /* Detect first transition */
-  /* Lo-Hi (arbitrary)       */
-  /* skip to the first high */
-  for (i= 0; i < GraphTraceLen; i++)
-    if (GraphBuffer[i] == high)
-      break;
-  /* now look for the first low */
-  for (; i < GraphTraceLen; i++)
-  {
-    if (GraphBuffer[i] == low)
-    {
-      lastval = i;
-      break;
-    }
-  }
-
-  /* If we're not working with 1/0s, demod based off clock */
-  if (high != 1)
-  {
-    bit = 0; /* We assume the 1st bit is zero, it may not be
-              * the case: this routine (I think) has an init problem.
-              * Ed.
-              */
-    for (; i < (int)(GraphTraceLen / clock); i++)
-    {
-      hithigh = 0;
-      hitlow = 0;
-      first = 1;
-
-      /* Find out if we hit both high and low peaks */
-      for (j = 0; j < clock; j++)
-      {
-        if (GraphBuffer[(i * clock) + j] == high)
-          hithigh = 1;
-        else if (GraphBuffer[(i * clock) + j] == low)
-          hitlow = 1;
-
-        /* it doesn't count if it's the first part of our read
-           because it's really just trailing from the last sequence */
-        if (first && (hithigh || hitlow))
-          hithigh = hitlow = 0;
-        else
-          first = 0;
-
-        if (hithigh && hitlow)
-          break;
-      }
-
-      /* If we didn't hit both high and low peaks, we had a bit transition */
-      if (!hithigh || !hitlow)
-        bit ^= 1;
-
-      BitStream[bit2idx++] = bit ^ invert;
-    }
-  }
-
-  /* standard 1/0 bitstream */
-  else
-  {
-
-    /* Then detect duration between 2 successive transitions */
-    for (bitidx = 1; i < GraphTraceLen; i++)
-    {
-      if (GraphBuffer[i-1] != GraphBuffer[i])
-      {
-        lc = i-lastval;
-        lastval = i;
-
-        // Error check: if bitidx becomes too large, we do not
-        // have a Manchester encoded bitstream or the clock is really
-        // wrong!
-        if (bitidx > (GraphTraceLen*2/clock+8) ) {
-          PrintAndLog("Error: the clock you gave is probably wrong, aborting.");
-          return 0;
-        }
-        // Then switch depending on lc length:
-        // Tolerance is 1/4 of clock rate (arbitrary)
-        if (abs(lc-clock/2) < tolerance) {
-          // Short pulse : either "1" or "0"
-          BitStream[bitidx++]=GraphBuffer[i-1];
-        } else if (abs(lc-clock) < tolerance) {
-          // Long pulse: either "11" or "00"
-          BitStream[bitidx++]=GraphBuffer[i-1];
-          BitStream[bitidx++]=GraphBuffer[i-1];
-        } else {
-        // Error
-          warnings++;
-          PrintAndLog("Warning: Manchester decode error for pulse width detection.");
-          PrintAndLog("(too many of those messages mean either the stream is not Manchester encoded, or clock is wrong)");
-
-          if (warnings > 10)
-          {
-            PrintAndLog("Error: too many detection errors, aborting.");
-            return 0;
-          }
-        }
-      }
-    }
-
-    // At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream
-    // Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful
-    // to stop output at the final bitidx2 value, not bitidx
-    for (i = 0; i < bitidx; i += 2) {
-      if ((BitStream[i] == 0) && (BitStream[i+1] == 1)) {
-        BitStream[bit2idx++] = 1 ^ invert;
-      } else if ((BitStream[i] == 1) && (BitStream[i+1] == 0)) {
-        BitStream[bit2idx++] = 0 ^ invert;
-      } else {
-        // We cannot end up in this state, this means we are unsynchronized,
-        // move up 1 bit:
-        i++;
-        warnings++;
-        PrintAndLog("Unsynchronized, resync...");
-        PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)");
-
-        if (warnings > 10)
-        {
-          PrintAndLog("Error: too many decode errors, aborting.");
-          return 0;
-        }
-      }
-    }
-  }
-
-  PrintAndLog("Manchester decoded bitstream");
-  // Now output the bitstream to the scrollback by line of 16 bits
-  for (i = 0; i < (bit2idx-16); i+=16) {
-    PrintAndLog("%i %i %i %i %i %i %i %i %i %i %i %i %i %i %i %i",
-      BitStream[i],
-      BitStream[i+1],
-      BitStream[i+2],
-      BitStream[i+3],
-      BitStream[i+4],
-      BitStream[i+5],
-      BitStream[i+6],
-      BitStream[i+7],
-      BitStream[i+8],
-      BitStream[i+9],
-      BitStream[i+10],
-      BitStream[i+11],
-      BitStream[i+12],
-      BitStream[i+13],
-      BitStream[i+14],
-      BitStream[i+15]);
-  }
-  return 0;
-}
-
-/* Modulate our data into manchester */
-int CmdManchesterMod(const char *Cmd)
-{
-  int i, j;
-  int clock;
-  int bit, lastbit, wave;
-
-  /* Get our clock */
-  clock = GetClock(Cmd, 0, 1);
-
-  wave = 0;
-  lastbit = 1;
-  for (i = 0; i < (int)(GraphTraceLen / clock); i++)
-  {
-    bit = GraphBuffer[i * clock] ^ 1;
-
-    for (j = 0; j < (int)(clock/2); j++)
-      GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave;
-    for (j = (int)(clock/2); j < clock; j++)
-      GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave ^ 1;
-
-    /* Keep track of how we start our wave and if we changed or not this time */
-    wave ^= bit ^ lastbit;
-    lastbit = bit;
-  }
-
-  RepaintGraphWindow();
-  return 0;
+	RepaintGraphWindow();
+	return 0;
 }
 
 int CmdNorm(const char *Cmd)
 {
-  int i;
-  int max = INT_MIN, min = INT_MAX;
-
-  for (i = 10; i < GraphTraceLen; ++i) {
-    if (GraphBuffer[i] > max)
-      max = GraphBuffer[i];
-    if (GraphBuffer[i] < min)
-      min = GraphBuffer[i];
-  }
-
-  if (max != min) {
-    for (i = 0; i < GraphTraceLen; ++i) {
-      GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 1000 /
-        (max - min);
-    }
-  }
-  RepaintGraphWindow();
-  return 0;
+	int i;
+	int max = INT_MIN, min = INT_MAX;
+
+	for (i = 10; i < GraphTraceLen; ++i) {
+		if (GraphBuffer[i] > max)
+			max = GraphBuffer[i];
+		if (GraphBuffer[i] < min)
+			min = GraphBuffer[i];
+	}
+
+	if (max != min) {
+		for (i = 0; i < GraphTraceLen; ++i) {
+			GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
+				(max - min);
+				//marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
+		}
+	}
+	RepaintGraphWindow();
+	return 0;
 }
 
 int CmdPlot(const char *Cmd)
 {
-  ShowGraphWindow();
-  return 0;
+	ShowGraphWindow();
+	return 0;
 }
 
 int CmdSave(const char *Cmd)
 {
-  FILE *f = fopen(Cmd, "w");
-  if(!f) {
-    PrintAndLog("couldn't open '%s'", Cmd);
-    return 0;
-  }
-  int i;
-  for (i = 0; i < GraphTraceLen; i++) {
-    fprintf(f, "%d\n", GraphBuffer[i]);
-  }
-  fclose(f);
-  PrintAndLog("saved to '%s'", Cmd);
-  return 0;
+	char filename[FILE_PATH_SIZE] = {0x00};
+	int len = 0;
+
+	len = strlen(Cmd);
+	if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+	memcpy(filename, Cmd, len);
+	 
+
+	FILE *f = fopen(filename, "w");
+	if(!f) {
+		PrintAndLog("couldn't open '%s'", filename);
+		return 0;
+	}
+	int i;
+	for (i = 0; i < GraphTraceLen; i++) {
+		fprintf(f, "%d\n", GraphBuffer[i]);
+	}
+	fclose(f);
+	PrintAndLog("saved to '%s'", Cmd);
+	return 0;
 }
 
 int CmdScale(const char *Cmd)
 {
-  CursorScaleFactor = atoi(Cmd);
-  if (CursorScaleFactor == 0) {
-    PrintAndLog("bad, can't have zero scale");
-    CursorScaleFactor = 1;
-  }
-  RepaintGraphWindow();
-  return 0;
-}
-
-int CmdThreshold(const char *Cmd)
-{
-  int threshold = atoi(Cmd);
-
-  for (int i = 0; i < GraphTraceLen; ++i) {
-    if (GraphBuffer[i] >= threshold)
-      GraphBuffer[i] = 1;
-    else
-      GraphBuffer[i] = -1;
-  }
-  RepaintGraphWindow();
-  return 0;
+	CursorScaleFactor = atoi(Cmd);
+	if (CursorScaleFactor == 0) {
+		PrintAndLog("bad, can't have zero scale");
+		CursorScaleFactor = 1;
+	}
+	RepaintGraphWindow();
+	return 0;
 }
 
 int CmdDirectionalThreshold(const char *Cmd)
 {
 	int8_t upThres = param_get8(Cmd, 0);
 	int8_t downThres = param_get8(Cmd, 1);
-  
-  printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
-  
-  int lastValue = GraphBuffer[0];
-  GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
-  
-  for (int i = 1; i < GraphTraceLen; ++i) {
-    // Apply first threshold to samples heading up
-    if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
-    {
-      lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
-      GraphBuffer[i] = 1;
-    }
-    // Apply second threshold to samples heading down
-    else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
-    {
-      lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
-      GraphBuffer[i] = -1;
-    }
-    else
-    {
-      lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
-      GraphBuffer[i] = GraphBuffer[i-1];
-
-    }
-  }
-  GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
-  RepaintGraphWindow();
-  return 0;
+
+	printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
+
+	int lastValue = GraphBuffer[0];
+	GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
+
+	for (int i = 1; i < GraphTraceLen; ++i) {
+		// Apply first threshold to samples heading up
+		if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
+		{
+			lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
+			GraphBuffer[i] = 1;
+		}
+		// Apply second threshold to samples heading down
+		else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
+		{
+			lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
+			GraphBuffer[i] = -1;
+		}
+		else
+		{
+			lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
+			GraphBuffer[i] = GraphBuffer[i-1];
+
+		}
+	}
+	GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
+	RepaintGraphWindow();
+	return 0;
 }
 
 int CmdZerocrossings(const char *Cmd)
 {
-  // Zero-crossings aren't meaningful unless the signal is zero-mean.
-  CmdHpf("");
-
-  int sign = 1;
-  int zc = 0;
-  int lastZc = 0;
-
-  for (int i = 0; i < GraphTraceLen; ++i) {
-    if (GraphBuffer[i] * sign >= 0) {
-      // No change in sign, reproduce the previous sample count.
-      zc++;
-      GraphBuffer[i] = lastZc;
-    } else {
-      // Change in sign, reset the sample count.
-      sign = -sign;
-      GraphBuffer[i] = lastZc;
-      if (sign > 0) {
-        lastZc = zc;
-        zc = 0;
-      }
-    }
-  }
-
-  RepaintGraphWindow();
-  return 0;
-}
-
-static command_t CommandTable[] = 
-{
-  {"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 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"},
-  {"bitsamples",    CmdBitsamples,      0, "Get raw samples as bitstring"},
-  {"bitstream",     CmdBitstream,       1, "[clock rate] -- Convert waveform into a bitstream"},
-  {"buffclear",     CmdBuffClear,       1, "Clear sample buffer and graph window"},
-  {"dec",           CmdDec,             1, "Decimate samples"},
-  {"detectclock",   CmdDetectClockRate, 1, "Detect clock rate"},
-  {"fskdemod",      CmdFSKdemod,        1, "Demodulate graph window as a HID FSK"},
-  {"fskhiddemod",   CmdFSKdemodHID,     1, "Demodulate graph window as a HID FSK using raw"},
-  {"fskiodemod",    CmdFSKdemodIO,      1, "Demodulate graph window as an IO Prox FSK using raw"},
-  {"fskrawdemod",   CmdFSKrawdemod,     1, "[clock rate] [invert] Demodulate graph window from FSK to binary (clock = 64 or 50)(invert = 1 or 0)"},
-  {"grid",          CmdGrid,            1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
-  {"hexsamples",    CmdHexsamples,      0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},  
-  {"hide",          CmdHide,            1, "Hide graph window"},
-  {"hpf",           CmdHpf,             1, "Remove DC offset from trace"},
-  {"load",          CmdLoad,            1, "<filename> -- Load trace (to graph window"},
-  {"ltrim",         CmdLtrim,           1, "<samples> -- Trim samples from left of trace"},
-  {"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"},
-  {"plot",          CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},
-  {"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."},
-  {NULL, NULL, 0, NULL}
+	// Zero-crossings aren't meaningful unless the signal is zero-mean.
+	CmdHpf("");
+
+	int sign = 1;
+	int zc = 0;
+	int lastZc = 0;
+
+	for (int i = 0; i < GraphTraceLen; ++i) {
+		if (GraphBuffer[i] * sign >= 0) {
+			// No change in sign, reproduce the previous sample count.
+			zc++;
+			GraphBuffer[i] = lastZc;
+		} else {
+			// Change in sign, reset the sample count.
+			sign = -sign;
+			GraphBuffer[i] = lastZc;
+			if (sign > 0) {
+				lastZc = zc;
+				zc = 0;
+			}
+		}
+	}
+
+	RepaintGraphWindow();
+	return 0;
+}
+
+static command_t CommandTable[] =
+{
+	{"help",            CmdHelp,            1, "This help"},
+	{"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"},
+	{"autocorr",        CmdAutoCorr,        1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
+	{"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
+	{"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"},
+	{"fskiodemod",      CmdFSKdemodIO,      1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
+	{"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
+	{"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
+	{"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"},
+	{"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, "[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)"},
+	{"printdemodbuffer",CmdPrintDemodBuff,  1, "[x] [o] <offset> -- 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)"},
+	{"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"},
+	{"setdebugmode",    CmdSetDebugMode,    1, "<0|1> -- Turn on or off Debugging Mode for 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"},
+	{"undec",           CmdUndec,           1, "Un-decimate samples by 2"},
+	{"zerocrossings",   CmdZerocrossings,   1, "Count time between zero-crossings"},
+	{NULL, NULL, 0, NULL}
 };
 
 int CmdData(const char *Cmd)
 {
-  CmdsParse(CommandTable, Cmd);
-  return 0;
+	CmdsParse(CommandTable, Cmd);
+	return 0;
 }
 
 int CmdHelp(const char *Cmd)
 {
-  CmdsHelp(CommandTable);
-  return 0;
+	CmdsHelp(CommandTable);
+	return 0;
 }