data psk demod minor fixes, pyramid demod add CS

[proxmark3-svn] / client / cmddata.c

diff --git a/client/cmddata.c b/client/cmddata.c
index aa59edc9257e3601d03e8f3fe4f1dc323ea66ac4..6d85cf689203ebed14d8413aafd0b794b8ba1991 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -1,17 +1,112 @@
+//-----------------------------------------------------------------------------
+// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Data and Graph commands
+//-----------------------------------------------------------------------------
+

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>

-#include "proxusb.h"
+#include "proxmark3.h"

 #include "data.h"
 #include "ui.h"
 #include "graph.h"
 #include "cmdparser.h"
 #include "data.h"
 #include "ui.h"
 #include "graph.h"
 #include "cmdparser.h"

+#include "util.h"

 #include "cmdmain.h"
 #include "cmddata.h"
 #include "cmdmain.h"
 #include "cmddata.h"

+#include "lfdemod.h"
+#include "usb_cmd.h"
+#include "crc.h"

 
 

+uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
+uint8_t g_debugMode;
+int DemodBufferLen;

 static int CmdHelp(const char *Cmd);
 
 static int CmdHelp(const char *Cmd);
 

+//set the demod buffer with given array of binary (one bit per byte)
+//by marshmellow
+void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
+{
+       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;
+}
+
+//by marshmellow
+void printDemodBuff(void)
+{
+       uint32_t i = 0;
+       int bitLen = DemodBufferLen;
+       if (bitLen<16) {
+               PrintAndLog("no bits found in demod buffer");
+               return;
+       }
+       if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
+               
+       // ensure equally divided by 16
+       bitLen &= 0xfff0;
+       
+       for (i = 0; i <= (bitLen-16); i+=16) {
+               PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
+                       DemodBuffer[i],
+                       DemodBuffer[i+1],
+                       DemodBuffer[i+2],
+                       DemodBuffer[i+3],
+                       DemodBuffer[i+4],
+                       DemodBuffer[i+5],
+                       DemodBuffer[i+6],
+                       DemodBuffer[i+7],
+                       DemodBuffer[i+8],
+                       DemodBuffer[i+9],
+                       DemodBuffer[i+10],
+                       DemodBuffer[i+11],
+                       DemodBuffer[i+12],
+                       DemodBuffer[i+13],
+                       DemodBuffer[i+14],
+                       DemodBuffer[i+15]);
+       }
+       return;
+}
+
+int CmdPrintDemodBuff(const char *Cmd)
+{
+  char hex;
+  char printBuff[512]={0x00};
+  uint8_t numBits = DemodBufferLen & 0xFFF0;
+  sscanf(Cmd, "%c", &hex);
+  if (hex == 'h'){
+    PrintAndLog("Usage: data printdemodbuffer [x]");
+    PrintAndLog("Options:        ");
+    PrintAndLog("       h       This help");
+    PrintAndLog("       x       output in hex (omit for binary output)");
+    return 0;
+  }
+  if (hex == 'x'){
+    numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
+    if (numBits==0) return 0;
+    PrintAndLog("DemodBuffer: %s",printBuff);
+  } else {
+    printDemodBuff();
+  }
+  return 1;
+}

 int CmdAmp(const char *Cmd)
 {
   int i, rising, falling;
 int CmdAmp(const char *Cmd)
 {
   int i, rising, falling;


@@ -56,19 +151,19 @@ int CmdAmp(const char *Cmd)
  * Updates the Graph trace with 0/1 values
  *
  * Arguments:
  * Updates the Graph trace with 0/1 values
  *
  * Arguments:

- * c : 0 or 1
+ * c : 0 or 1  (or invert)

  */
  */

+ //this method ignores the clock
+
+ //this function strictly converts highs and lows to 1s and 0s for each sample in the graphbuffer

 int Cmdaskdemod(const char *Cmd)
 {
   int i;
   int c, high = 0, low = 0;
 
 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);
 
   sscanf(Cmd, "%i", &c);
 

-  /* Detect high and lows and clock */
-  // (AL - clock???)
+  /* Detect high and lows */

   for (i = 0; i < GraphTraceLen; ++i)
   {
     if (GraphBuffer[i] > high)
   for (i = 0; i < GraphTraceLen; ++i)
   {
     if (GraphBuffer[i] > high)


@@ -76,11 +171,13 @@ int Cmdaskdemod(const char *Cmd)
     else if (GraphBuffer[i] < low)
       low = 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;
   }
   if (c != 0 && c != 1) {
     PrintAndLog("Invalid argument: %s", Cmd);
     return 0;
   }

-
+  //prime loop

   if (GraphBuffer[0] > 0) {
     GraphBuffer[0] = 1-c;
   } else {
   if (GraphBuffer[0] > 0) {
     GraphBuffer[0] = 1-c;
   } else {


@@ -95,9 +192,10 @@ int Cmdaskdemod(const char *Cmd)
      * low for long periods, others just reach the peak and go
      * down)
      */
      * low for long periods, others just reach the peak and go
      * down)
      */

-    if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) {
+    //[marhsmellow] change == to >= for high and <= for low for fuzz
+    if ((GraphBuffer[i] >= high) && (GraphBuffer[i - 1] == c)) {

       GraphBuffer[i] = 1 - c;
       GraphBuffer[i] = 1 - c;

-    } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){
+    } else if ((GraphBuffer[i] <= low) && (GraphBuffer[i - 1] == (1 - c))){

       GraphBuffer[i] = c;
     } else {
       /* No transition */
       GraphBuffer[i] = c;
     } else {
       /* No transition */


@@ -108,57 +206,606 @@ int Cmdaskdemod(const char *Cmd)
   return 0;
 }
 
   return 0;
 }
 

-int CmdAutoCorr(const char *Cmd)
+//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
+int CmdGetBitStream(const char *Cmd)

 {
 {

-  static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
+  int i;
+  CmdHpf(Cmd);
+  for (i = 0; i < GraphTraceLen; i++) {
+    if (GraphBuffer[i] >= 1) {
+      GraphBuffer[i] = 1;
+    } else {
+      GraphBuffer[i] = 0;
+    }
+  }
+  RepaintGraphWindow();
+  return 0;
+}

 
 

-  int window = atoi(Cmd);

 
 

-  if (window == 0) {
-    PrintAndLog("needs a window");
+//by marshmellow
+void printBitStream(uint8_t BitStream[], uint32_t bitLen)
+{
+       uint32_t i = 0;
+       if (bitLen<16) {
+               PrintAndLog("Too few bits found: %d",bitLen);
+               return;
+       }
+       if (bitLen>512) bitLen=512;
+
+         // ensure equally divided by 16
+       bitLen &= 0xfff0;
+
+
+       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;
+}
+//by marshmellow
+//print 64 bit EM410x ID in multiple formats
+void printEM410x(uint64_t id)
+{
+  if (id !=0){
+    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)));
+      }
+    }
+    //output em id
+    PrintAndLog("EM TAG ID    : %010llx", id);
+    PrintAndLog("Unique TAG ID: %010llx",  id2lo);
+    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;
+}
+
+//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 CmdAskEM410xDemod(const char *Cmd)
+{
+  int invert=0;
+  int clk=0;
+  int maxErr=100;
+  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;
   }
     return 0;
   }

-  if (window >= GraphTraceLen) {
-    PrintAndLog("window must be smaller than trace (%d samples)",
-      GraphTraceLen);
+
+
+  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+  sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
+  if (invert != 0 && invert != 1) {
+    PrintAndLog("Invalid argument: %s", Cmd);

     return 0;
   }
     return 0;
   }

+  size_t BitLen = getFromGraphBuf(BitStream);
+
+  if (g_debugMode==1) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
+  if (BitLen==0) return 0;
+  int errCnt=0;
+  errCnt = askmandemod(BitStream, &BitLen, &clk, &invert, maxErr);
+  if (errCnt<0||BitLen<16){  //if fatal error (or -1)
+    if (g_debugMode==1) PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
+    return 0;
+  }
+  PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen);
+
+  //output
+  if (errCnt>0){
+    PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+  }
+  //PrintAndLog("ASK/Manchester decoded bitstream:");
+  // Now output the bitstream to the scrollback by line of 16 bits
+  setDemodBuf(BitStream,BitLen,0);
+  //printDemodBuff();
+  uint64_t lo =0;
+  size_t idx=0;
+  lo = Em410xDecode(BitStream, &BitLen, &idx);
+  if (lo>0){
+    //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();
+    }
+    PrintAndLog("EM410x pattern found: ");
+    if (BitLen > 64) PrintAndLog("\nWarning! Length not what is expected - Length: %d bits\n",BitLen);
+    printEM410x(lo);
+    return 1;
+  }
+  return 0;
+}

 
 

-  PrintAndLog("performing %d correlations", GraphTraceLen - window);
+int ASKmanDemod(const char *Cmd, bool verbose, bool emSearch)
+{
+  int invert=0;
+  int clk=0;
+  int maxErr=100;
+  
+  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+  sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
+  if (invert != 0 && invert != 1) {
+    PrintAndLog("Invalid argument: %s", Cmd);
+    return 0;
+  }
+  if (clk==1){
+    invert=1;
+    clk=0;
+  }
+  size_t BitLen = getFromGraphBuf(BitStream);
+  if (g_debugMode==1) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
+  if (BitLen==0) return 0;
+  int errCnt=0;
+  errCnt = askmandemod(BitStream, &BitLen, &clk, &invert, maxErr);
+  if (errCnt<0||BitLen<16){  //if fatal error (or -1)
+    if (g_debugMode==1) PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
+    return 0;
+  }
+  if (verbose) PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen);

 
 

+  //output
+  if (errCnt>0){
+    if (verbose) PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+  }
+  if (verbose) PrintAndLog("ASK/Manchester decoded bitstream:");
+  // Now output the bitstream to the scrollback by line of 16 bits
+  setDemodBuf(BitStream,BitLen,0);
+  if (verbose) printDemodBuff();
+  uint64_t lo =0;
+  size_t idx=0;
+  if (emSearch){
+    lo = Em410xDecode(BitStream, &BitLen, &idx);
+    if (lo>0){
+      //set GraphBuffer for clone or sim command
+      setDemodBuf(BitStream, BitLen, idx);
+      if (g_debugMode){
+        PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
+        printDemodBuff();
+      }
+      if (verbose) PrintAndLog("EM410x pattern found: ");
+      if (verbose) printEM410x(lo);
+      return 1;
+    }
+  }
+  return 1;
+}
+
+//by marshmellow
+//takes 3 arguments - clock, invert, 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)
+{
+  char cmdp = param_getchar(Cmd, 0);
+  if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
+    PrintAndLog("Usage:  data rawdemod am [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 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 ASKmanDemod(Cmd, TRUE, TRUE);
+}
+
+//by marshmellow
+//manchester decode
+//stricktly take 10 and 01 and convert to 0 and 1
+int Cmdmandecoderaw(const char *Cmd)
+{
+  int i =0;
+  int errCnt=0;
+  size_t size=0;
+  size_t maxErr = 20;
+  char cmdp = param_getchar(Cmd, 0);
+  if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') {
+    PrintAndLog("Usage:  data manrawdecode");
+    PrintAndLog("     Takes 10 and 01 and converts to 0 and 1 respectively");
+    PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");
+    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>1 || low <0 ){
+    PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode");
+    return 0;
+  }
+  size=i;
+  errCnt=manrawdecode(BitStream, &size);
+  if (errCnt>=maxErr){
+    PrintAndLog("Too many errors: %d",errCnt);
+    return 0;
+  }
+  PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
+  printBitStream(BitStream, size);
+  if (errCnt==0){
+    uint64_t id = 0;
+    size_t idx=0;
+    id = Em410xDecode(BitStream, &size, &idx);
+    if (id>0){
+      //need to adjust to set bitstream back to manchester encoded data
+      //setDemodBuf(BitStream, size, idx);
+
+      printEM410x(id);
+    }
+  }
+  return 1;
+}
+
+//by marshmellow
+//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
+//  since it is not like manchester and doesn't have an incorrect bit pattern we
+//  cannot determine if our decode is correct or if it should be shifted by one bit
+//  the argument offset allows us to manually shift if the output is incorrect
+//  (better would be to demod and decode at the same time so we can distinguish large
+//    width waves vs small width waves to help the decode positioning) or askbiphdemod
+int CmdBiphaseDecodeRaw(const char *Cmd)
+{
+       int i = 0;
+       int errCnt=0;
+       size_t size=0;
+       int offset=0;
+       int invert=0;
+       int high=0, low=0;
+       char cmdp = param_getchar(Cmd, 0);
+       if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  data biphaserawdecode [offset] <invert>");
+               PrintAndLog("     Converts 10 or 01 to 0 and 11 or 00 to 1");
+               PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");
+               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("");
+               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", &offset, &invert);
+       if (DemodBufferLen==0) return 0;
+       uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+       //get graphbuffer & high and low
+       for (;i<DemodBufferLen;++i){
+               if(DemodBuffer[i]>high)high=DemodBuffer[i];
+               else if(DemodBuffer[i]<low)low=DemodBuffer[i];
+               BitStream[i]=DemodBuffer[i];
+       }
+       if (high>1 || low <0){
+               PrintAndLog("Error: please raw demod the wave first then decode");
+               return 0;
+       }
+       size=i;
+       errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
+       if (errCnt>=20){
+               PrintAndLog("Too many errors attempting to decode: %d",errCnt);
+               return 0;
+       }
+       PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
+       printBitStream(BitStream, size);
+       PrintAndLog("\nif bitstream does not look right try offset=1");
+  if (offset == 1) setDemodBuf(DemodBuffer,DemodBufferLen-1,1);  //remove first bit from raw demod
+       return 1;
+}
+
+// set demod buffer back to raw after biphase demod
+void setBiphaseDemodBuf(uint8_t *BitStream, size_t size)
+{
+  uint8_t rawStream[512]={0x00};
+  size_t i=0;
+  uint8_t curPhase=0;
+  if (size > 256) {
+    PrintAndLog("ERROR - Biphase Demod Buffer overrun");
+    return;
+  }
+  for (size_t idx=0; idx<size; idx++){
+    if(!BitStream[idx]){
+      rawStream[i++] = curPhase;
+      rawStream[i++] = curPhase;
+      curPhase ^= 1; 
+    } else {
+      rawStream[i++] = curPhase;
+      rawStream[i++] = curPhase ^ 1;
+    }
+  }
+  setDemodBuf(rawStream,i,0);
+  return;
+}
+//by marshmellow
+//takes 4 arguments - clock, invert, maxErr as integers and amplify as char
+//attempts to demodulate ask only
+//prints binary found and saves in graphbuffer for further commands
+int ASKrawDemod(const char *Cmd, bool verbose)
+{
+  int invert=0;
+  int clk=0;
+  int maxErr=100;
+  uint8_t askAmp = 0;
+  char amp = param_getchar(Cmd, 0);
+  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+  sscanf(Cmd, "%i %i %i %c", &clk, &invert, &maxErr, &amp);
+  if (invert != 0 && invert != 1) {
+    if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
+    return 0;
+  }
+  if (clk==1){
+    invert=1;
+    clk=0;
+  }
+  if (amp == 'a' || amp == 'A') askAmp=1; 
+  size_t BitLen = getFromGraphBuf(BitStream);
+  if (BitLen==0) return 0;
+  int errCnt=0;
+  errCnt = askrawdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp);
+  if (errCnt==-1||BitLen<16){  //throw away static - allow 1 and -1 (in case of threshold command first)
+    if (verbose) PrintAndLog("no data found");
+    if (g_debugMode==1 && verbose) PrintAndLog("errCnt: %d, BitLen: %d, clk: %d, invert: %d", errCnt, BitLen, clk, invert);
+    return 0;
+  }
+  if (verbose) PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d", clk, invert, BitLen);
+  
+  //move BitStream back to DemodBuffer
+  setDemodBuf(BitStream,BitLen,0);
+
+  //output
+  if (errCnt>0 && verbose){
+    PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d", errCnt);
+  }
+  if (verbose){
+    PrintAndLog("ASK demoded bitstream:");
+    // Now output the bitstream to the scrollback by line of 16 bits
+    printBitStream(BitStream,BitLen);
+  } 
+  return 1;
+}
+
+//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)
+{
+  int ans = ASKrawDemod(Cmd, FALSE);
+  if (ans <= 0) {
+    if (g_debugMode) PrintAndLog("Error AskrawDemod: %d",ans);
+    return ans;
+  }
+  size_t size = DemodBufferLen;
+  ans = BiphaseRawDecode(DemodBuffer, &size, 0, 0); 
+  if (ans !=0) {
+    if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d",ans);
+    return ans;
+  }
+  //call lfdemod.c demod for gProxII
+  ans = gProxII_Demod(DemodBuffer, &size);
+  if (ans < 0){
+    if (g_debugMode) PrintAndLog("Error gProxII_Demod 1st Try: %d",ans);
+    //try biphase again
+    ans = BiphaseRawDecode(DemodBuffer, &size, 1, 0); 
+    if (ans != 0) {
+      if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d",ans);
+      return ans;
+    }
+    ans = gProxII_Demod(DemodBuffer, &size);
+    if (ans < 0) {
+      if (g_debugMode) PrintAndLog("Error gProxII_Demod 1st Try: %d",ans);
+      return ans;
+    }
+  }
+  //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 -1;
+      }
+      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);
+  setBiphaseDemodBuf(DemodBuffer+ans, 96);
+  return 1;
+}
+
+//by marshmellow - see ASKrawDemod
+int Cmdaskrawdemod(const char *Cmd)
+{
+  char cmdp = param_getchar(Cmd, 0);
+  if (strlen(Cmd) > 12 || cmdp == 'h' || cmdp == 'H') {
+    PrintAndLog("Usage:  data rawdemod ar [clock] <invert> [maxError] [amplify]");
+    PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
+    PrintAndLog("     <invert>, 1 to invert output");
+    PrintAndLog("     [set maximum allowed errors], default = 100");
+    PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
+    PrintAndLog("");
+    PrintAndLog("    sample: data rawdemod ar          = demod an ask tag from GraphBuffer");
+    PrintAndLog("          : data rawdemod ar a        = demod an ask tag from GraphBuffer, amplified");
+    PrintAndLog("          : data rawdemod ar 32       = demod an ask tag from GraphBuffer using a clock of RF/32");
+    PrintAndLog("          : data rawdemod ar 32 1     = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
+    PrintAndLog("          : data rawdemod ar 1        = demod an ask tag from GraphBuffer while inverting data");
+    PrintAndLog("          : data rawdemod ar 64 1 0   = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
+    PrintAndLog("          : data rawdemod ar 64 1 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
+    return 0;
+  }
+  return ASKrawDemod(Cmd, TRUE);
+}
+
+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;
   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;
+      }
+    }

   }
   }

-  GraphTraceLen = GraphTraceLen - window;
-  memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
+  if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);

 
 

-  RepaintGraphWindow();
-  return 0;
+  if (SaveGrph){
+    GraphTraceLen = GraphTraceLen - window;
+    memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
+    RepaintGraphWindow();  
+  }
+  return Correlation;
+}
+
+int CmdAutoCorr(const char *Cmd)
+{
+  int window = atoi(Cmd);
+
+  if (window == 0) {
+    PrintAndLog("needs a window");
+    return 0;
+  }
+  if (window >= GraphTraceLen) {
+    PrintAndLog("window must be smaller than trace (%d samples)",
+      GraphTraceLen);
+    return 0;
+  }
+  return AutoCorrelate(window, TRUE, TRUE);

 }
 
 int CmdBitsamples(const char *Cmd)
 {
   int cnt = 0;
 }
 
 int CmdBitsamples(const char *Cmd)
 {
   int cnt = 0;

-  int n = 3072;
+  uint8_t got[12288];

 
 

-  for (int i = 0; i < n; i += 12) {
-    UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
-    SendCommand(&c);
-    WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K);
+  GetFromBigBuf(got,sizeof(got),0);
+  WaitForResponse(CMD_ACK,NULL);

 
 

-    for (int j = 0; j < 48; j++) {
+    for (int j = 0; j < sizeof(got); j++) {

       for (int k = 0; k < 8; k++) {
       for (int k = 0; k < 8; k++) {

-        if(sample_buf[j] & (1 << (7 - k))) {
+        if(got[j] & (1 << (7 - k))) {

           GraphBuffer[cnt++] = 1;
         } else {
           GraphBuffer[cnt++] = 0;
         }
       }
           GraphBuffer[cnt++] = 1;
         } else {
           GraphBuffer[cnt++] = 0;
         }
       }

-    }

   }
   GraphTraceLen = cnt;
   RepaintGraphWindow();
   }
   GraphTraceLen = cnt;
   RepaintGraphWindow();


@@ -188,7 +835,7 @@ int CmdBitstream(const char *Cmd)
   }
 
   /* Get our clock */
   }
 
   /* Get our clock */

-  clock = GetClock(Cmd, high, 1);
+  clock = GetAskClock(Cmd, high, 1);

   gtl = ClearGraph(0);
 
   bit = 0;
   gtl = ClearGraph(0);
 
   bit = 0;


@@ -220,10 +867,6 @@ int CmdBitstream(const char *Cmd)
       bit ^= 1;
 
     AppendGraph(0, clock, bit);
       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();
   }
 
   RepaintGraphWindow();


@@ -247,16 +890,670 @@ int CmdDec(const char *Cmd)
   RepaintGraphWindow();
   return 0;
 }
   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, and askdemod 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); 
+  int shift = 127;
+  int shiftedVal=0;
+  for(int i = 1; i<GraphTraceLen; i++){
+    if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
+      shift=127;
+    else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
+      shift=-127;
+
+    shiftedVal=GraphBuffer[i]+shift;
+
+    if (shiftedVal>127) 
+      shiftedVal=127;
+    else if (shiftedVal<-127) 
+      shiftedVal=-127;
+    GraphBuffer[i-1] = shiftedVal;
+  }
+  RepaintGraphWindow();
+  //CmdNorm("");
+  return 0;
+}

 
 /* Print our clock rate */
 
 /* 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 CmdDetectClockRate(const char *Cmd)
 {

-  int clock = DetectClock(0);
-  PrintAndLog("Auto-detected clock rate: %d", clock);
+       char cmdp = param_getchar(Cmd, 0);
+       if (strlen(Cmd) > 3 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  data detectclock [modulation]");
+               PrintAndLog("     [modulation as char], specify the modulation type you want to detect the clock of");
+               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("", 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;
+}
+
+//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)
+{
+  //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;
+  uint8_t dummy=0;
+  if (fchigh==0 || fclow == 0){
+    fcs = countFC(BitStream, BitLen, &dummy);
+    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;
+  }
+  if (verbose) PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow);
+  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(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits  most tags will have full bit stream inside that sample size
+    if (verbose) {
+      PrintAndLog("FSK decoded bitstream:");
+      printBitStream(BitStream,size);
+    }
+
+    return 1;
+  } else{
+    if (verbose) PrintAndLog("no FSK data found");
+  }

   return 0;
 }
 
   return 0;
 }
 

-int CmdFSKdemod(const char *Cmd)
+//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 CmdFSKrawdemod(const char *Cmd)
+{
+  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)
+//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
+//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};
+  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
+//IO-Prox demod - FSK RF/64 with preamble of 000000001
+//print ioprox ID and some format details
+int CmdFSKdemodIO(const char *Cmd)
+{
+  //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+  //set defaults
+  int idx=0;
+  //something in graphbuffer?
+  if (GraphTraceLen < 65) {
+    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==1){
+      PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
+      if (BitLen > 92) printBitStream(BitStream,92);
+    } 
+    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==1) 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
+  PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);
+  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
+  int 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;
+}
+
+int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating

 {
   static const int LowTone[]  = {
     1,  1,  1,  1,  1, -1, -1, -1, -1, -1,
 {
   static const int LowTone[]  = {
     1,  1,  1,  1,  1, -1, -1, -1, -1, -1,


@@ -313,7 +1610,7 @@ int CmdFSKdemod(const char *Cmd)
   GraphTraceLen -= (convLen + 16);
   RepaintGraphWindow();
 
   GraphTraceLen -= (convLen + 16);
   RepaintGraphWindow();
 

-  // Find bit-sync (3 lo followed by 3 high)
+  // 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;
   int max = 0, maxPos = 0;
   for (i = 0; i < 6000; ++i) {
     int dec = 0;


@@ -342,8 +1639,7 @@ int CmdFSKdemod(const char *Cmd)
   PrintAndLog("actual data bits start at sample %d", maxPos);
   PrintAndLog("length %d/%d", highLen, lowLen);
 
   PrintAndLog("actual data bits start at sample %d", maxPos);
   PrintAndLog("length %d/%d", highLen, lowLen);
 

-  uint8_t bits[46];
-  bits[sizeof(bits)-1] = '\0';
+  uint8_t bits[46] = {0x00};

 
   // find bit pairs and manchester decode them
   for (i = 0; i < arraylen(bits) - 1; ++i) {
 
   // find bit pairs and manchester decode them
   for (i = 0; i < arraylen(bits) - 1; ++i) {


@@ -375,56 +1671,357 @@ int CmdFSKdemod(const char *Cmd)
   return 0;
 }
 
   return 0;
 }
 

+//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 (verbose) PrintAndLog("Invalid argument: %s", Cmd);
+    return -1;
+  }
+  uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+  size_t BitLen = getFromGraphBuf(BitStream);
+  if (BitLen==0) return -1;
+  uint8_t carrier=countPSK_FC(BitStream, BitLen);
+  if (carrier!=2 && carrier!=4 && carrier!=8){
+    //invalid carrier
+    return -1;
+  }
+  int errCnt=0;
+  errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
+  if (errCnt > maxErr){
+    if (g_debugMode==1 && verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+    return -1;
+  } 
+  if (errCnt<0|| BitLen<16){  //throw away static - allow 1 and -1 (in case of threshold command first)
+    if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+    return -1;
+  }
+  if (verbose) PrintAndLog("Tried PSK Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+  //prime demod buffer for output
+  setDemodBuf(BitStream,BitLen,0);
+  return errCnt;
+}
+
+// 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 < 0){
+               if (g_debugMode==1) 
+                       PrintAndLog("Error1: %d",ans);
+               return 0;
+       }
+       uint8_t invert=0;
+       ans = indala26decode(DemodBuffer,(size_t *) &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;
+}
+
+// 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==1 && 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==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
+    return 0;
+  }
+  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){
+    PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+  }
+  if (verbose) {
+    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 errCnt;
+  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;
+  }
+  errCnt = PSKDemod(Cmd, TRUE);
+  //output
+  if (errCnt<0){
+    if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt); 
+    return 0;
+  }
+  if (errCnt>0){
+    PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+  }
+  PrintAndLog("PSK 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 errCnt=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;
+  }
+  errCnt=PSKDemod(Cmd, TRUE);
+  if (errCnt<0){
+    if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt);  
+    return 0;
+  } 
+  psk1TOpsk2(DemodBuffer, DemodBufferLen);
+  if (errCnt>0){
+    if (g_debugMode){
+      PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+      PrintAndLog("PSK2 demoded bitstream:");
+      // Now output the bitstream to the scrollback by line of 16 bits
+      printDemodBuff();
+    }
+  }else{
+    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) > 14 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
+               PrintAndLog("Usage:  data rawdemod [modulation] <help>|<options>");
+               PrintAndLog("   [modulation] as 2 char, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, '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 for ask/raw demod");
+               PrintAndLog("          : data rawdemod fs           = demod GraphBuffer using: fsk - 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+3);
+       } else if(cmdp == 'a' && cmdp2 == 'm'){
+               ans = Cmdaskmandemod(Cmd+3);
+       } else if(cmdp == 'a' && cmdp2 == 'r'){
+               ans = Cmdaskrawdemod(Cmd+3);
+       } else if(cmdp == 'n' && cmdp2 == 'r'){
+               ans = CmdNRZrawDemod(Cmd+3);
+       } else if(cmdp == 'p' && cmdp2 == '1'){
+               ans = CmdPSK1rawDemod(Cmd+3);
+       } else if(cmdp == 'p' && cmdp2 == '2'){
+               ans = CmdPSK2rawDemod(Cmd+3);
+       } else { 
+               PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
+       }
+       return ans;
+}
+

 int CmdGrid(const char *Cmd)
 {
   sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
 int CmdGrid(const char *Cmd)
 {
   sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);

+  PlotGridXdefault= PlotGridX;
+  PlotGridYdefault= PlotGridY;

   RepaintGraphWindow();
   return 0;
 }
 
 int CmdHexsamples(const char *Cmd)
 {
   RepaintGraphWindow();
   return 0;
 }
 
 int CmdHexsamples(const char *Cmd)
 {

-  int n;
+  int i, j;

   int requested = 0;
   int offset = 0;
   int requested = 0;
   int offset = 0;

-  sscanf(Cmd, "%i %i", &requested, &offset);
-  if (offset % 4 != 0) {
-    PrintAndLog("Offset must be a multiple of 4");
-    return 0;
-  }
-  offset = offset/4;                
+  char string_buf[25];
+  char* string_ptr = string_buf;
+  uint8_t got[BIGBUF_SIZE];

 
 

-  int delivered = 0;
+  sscanf(Cmd, "%i %i", &requested, &offset);

 
 

+  /* if no args send something */

   if (requested == 0) {
   if (requested == 0) {

-    n = 12;
-    requested = 12;
-  } else {
-    n = requested/4;
-  }
-
-  for (int i = offset; i < n+offset; i += 12) {
-    UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
-    SendCommand(&c);
-    WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K);
-    for (int j = 0; j < 48; j += 8) {
-      PrintAndLog("%02x %02x %02x %02x %02x %02x %02x %02x",
-        sample_buf[j+0],
-        sample_buf[j+1],
-        sample_buf[j+2],
-        sample_buf[j+3],
-        sample_buf[j+4],
-        sample_buf[j+5],
-        sample_buf[j+6],
-        sample_buf[j+7],
-        sample_buf[j+8]
-      );
-      delivered += 8;
-      if (delivered >= requested)
-        break;
+    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';

     }
     }

-    if (delivered >= requested)
-      break;

   }
   return 0;
 }
   }
   return 0;
 }


@@ -435,6 +2032,7 @@ int CmdHide(const char *Cmd)
   return 0;
 }
 
   return 0;
 }
 

+//zero mean GraphBuffer

 int CmdHpf(const char *Cmd)
 {
   int i;
 int CmdHpf(const char *Cmd)
 {
   int i;


@@ -449,36 +2047,155 @@ int CmdHpf(const char *Cmd)
   RepaintGraphWindow();
   return 0;
 }
   RepaintGraphWindow();
   return 0;
 }

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

 
 

-int CmdSamples(const char *Cmd)
+bool _headBit( BitstreamOut *stream)

 {
 {

-  int cnt = 0;
-  int n;
+       int bytepos = stream->position >> 3; // divide by 8
+       int bitpos = (stream->position++) & 7; // mask out 00000111
+       return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
+}

 
 

-  n = strtol(Cmd, NULL, 0);
-  if (n == 0) n = 128;
-  if (n > 16000) n = 16000;
+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;
+}

 
 

-  PrintAndLog("Reading %d samples\n", n);
-  for (int i = 0; i < n; i += 12) {
-    UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
-    SendCommand(&c);
-    WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K);
-    for (int j = 0; j < 48; j++) {
-      GraphBuffer[cnt++] = ((int)sample_buf[j]) - 128;
-    }
-  }
-  PrintAndLog("Done!\n");
-  GraphTraceLen = n*4;
-  RepaintGraphWindow();
-  return 0;
+int CmdSamples(const char *Cmd)
+{
+       //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 < sizeof(GraphBuffer); 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 CmdTuneSamples(const char *Cmd)
+{
+       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)
 {
 int CmdLoad(const char *Cmd)
 {

-  FILE *f = fopen(Cmd, "r");
+  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) {
   if (!f) {

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

     return 0;
   }
 
     return 0;
   }
 


@@ -506,6 +2223,17 @@ int CmdLtrim(const char *Cmd)
   return 0;
 }
 
   return 0;
 }
 

+// trim graph to input argument length
+int CmdRtrim(const char *Cmd)
+{
+  int ds = atoi(Cmd);
+
+  GraphTraceLen = ds;
+
+  RepaintGraphWindow();
+  return 0;
+}
+

 /*
  * Manchester demodulate a bitstream. The bitstream needs to be already in
  * the GraphBuffer as 0 and 1 values
 /*
  * Manchester demodulate a bitstream. The bitstream needs to be already in
  * the GraphBuffer as 0 and 1 values


@@ -524,7 +2252,7 @@ int CmdManchesterDemod(const char *Cmd)
   int i, j, invert= 0;
   int bit;
   int clock;
   int i, j, invert= 0;
   int bit;
   int clock;

-  int lastval;
+  int lastval = 0;

   int low = 0;
   int high = 0;
   int hithigh, hitlow, first;
   int low = 0;
   int high = 0;
   int hithigh, hitlow, first;


@@ -538,6 +2266,7 @@ int CmdManchesterDemod(const char *Cmd)
   {
     PrintAndLog("Inverting output");
     invert = 1;
   {
     PrintAndLog("Inverting output");
     invert = 1;

+    ++Cmd;

     do
       ++Cmd;
     while(*Cmd == ' '); // in case a 2nd argument was given
     do
       ++Cmd;
     while(*Cmd == ' '); // in case a 2nd argument was given


@@ -550,7 +2279,7 @@ int CmdManchesterDemod(const char *Cmd)
 
   /* But it does not work if compiling on WIndows: therefore we just allocate a */
   /* large array */
 
   /* But it does not work if compiling on WIndows: therefore we just allocate a */
   /* large array */

-  int BitStream[MAX_GRAPH_TRACE_LEN];
+  uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0};

 
   /* Detect high and lows */
   for (i = 0; i < GraphTraceLen; i++)
 
   /* Detect high and lows */
   for (i = 0; i < GraphTraceLen; i++)


@@ -562,7 +2291,7 @@ int CmdManchesterDemod(const char *Cmd)
   }
 
   /* Get our clock */
   }
 
   /* Get our clock */

-  clock = GetClock(Cmd, high, 1);
+  clock = GetAskClock(Cmd, high, 1);

 
   int tolerance = clock/4;
 
 
   int tolerance = clock/4;
 


@@ -631,30 +2360,30 @@ int CmdManchesterDemod(const char *Cmd)
     {
       if (GraphBuffer[i-1] != GraphBuffer[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 {
+        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++;
         // 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)");
+          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)
           {
 
           if (warnings > 10)
           {


@@ -671,15 +2400,15 @@ int CmdManchesterDemod(const char *Cmd)
     for (i = 0; i < bitidx; i += 2) {
       if ((BitStream[i] == 0) && (BitStream[i+1] == 1)) {
         BitStream[bit2idx++] = 1 ^ invert;
     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++;
+      } 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++;
         warnings++;

-      PrintAndLog("Unsynchronized, resync...");
-      PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)");
+        PrintAndLog("Unsynchronized, resync...");
+        PrintAndLog("(too many of those messages mean the stream is not Manchester encoded)");

 
         if (warnings > 10)
         {
 
         if (warnings > 10)
         {


@@ -722,7 +2451,7 @@ int CmdManchesterMod(const char *Cmd)
   int bit, lastbit, wave;
 
   /* Get our clock */
   int bit, lastbit, wave;
 
   /* Get our clock */

-  clock = GetClock(Cmd, 0, 1);
+  clock = GetAskClock(Cmd, 0, 1);

 
   wave = 0;
   lastbit = 1;
 
   wave = 0;
   lastbit = 1;


@@ -758,8 +2487,9 @@ int CmdNorm(const char *Cmd)
 
   if (max != min) {
     for (i = 0; i < GraphTraceLen; ++i) {
 
   if (max != min) {
     for (i = 0; i < GraphTraceLen; ++i) {

-      GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 1000 /
+                       GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /

         (max - min);
         (max - min);

+                               //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work

     }
   }
   RepaintGraphWindow();
     }
   }
   RepaintGraphWindow();


@@ -774,9 +2504,17 @@ int CmdPlot(const char *Cmd)
 
 int CmdSave(const char *Cmd)
 {
 
 int CmdSave(const char *Cmd)
 {

-  FILE *f = fopen(Cmd, "w");
+  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) {
   if(!f) {

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

     return 0;
   }
   int i;
     return 0;
   }
   int i;


@@ -807,8 +2545,43 @@ int CmdThreshold(const char *Cmd)
     if (GraphBuffer[i] >= threshold)
       GraphBuffer[i] = 1;
     else
     if (GraphBuffer[i] >= threshold)
       GraphBuffer[i] = 1;
     else

-      GraphBuffer[i] =- 1;
+      GraphBuffer[i] = -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;
 }
   RepaintGraphWindow();
   return 0;
 }


@@ -842,32 +2615,61 @@ int CmdZerocrossings(const char *Cmd)
   return 0;
 }
 
   return 0;
 }
 

-static command_t CommandTable[] = 
+static command_t CommandTable[] =

 {
   {"help",          CmdHelp,            1, "This help"},
   {"amp",           CmdAmp,             1, "Amplify peaks"},
 {
   {"help",          CmdHelp,            1, "This help"},
   {"amp",           CmdAmp,             1, "Amplify peaks"},

-  {"askdemod",      Cmdaskdemod,        1, "<0|1> -- Attempt to demodulate simple ASK tags"},
+  //{"askdemod",      Cmdaskdemod,        1, "<0 or 1> -- Attempt to demodulate simple ASK tags"},
+  {"askedgedetect", CmdAskEdgeDetect,   1, "[threshold] Adjust Graph for manual ask demod using length of sample differences to detect the edge of a wave (default = 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"},
+  //{"askmandemod",   Cmdaskmandemod,     1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional)"},
+  //{"askrawdemod",   Cmdaskrawdemod,     1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK tags and output bin (args optional)"},

   {"autocorr",      CmdAutoCorr,        1, "<window length> -- Autocorrelation over window"},
   {"autocorr",      CmdAutoCorr,        1, "<window length> -- Autocorrelation over window"},

+  {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},

   {"bitsamples",    CmdBitsamples,      0, "Get raw samples as bitstring"},
   {"bitsamples",    CmdBitsamples,      0, "Get raw samples as bitstring"},

-  {"bitstream",     CmdBitstream,       1, "[clock rate] -- Convert waveform into a bitstream"},
+  //{"bitstream",     CmdBitstream,       1, "[clock rate] -- Convert waveform into a bitstream"},

   {"buffclear",     CmdBuffClear,       1, "Clear sample buffer and graph window"},
   {"dec",           CmdDec,             1, "Decimate samples"},
   {"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"},
+  {"detectclock",   CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
+  //{"fskdemod",      CmdFSKdemod,        1, "Demodulate graph window as a HID FSK"},
+  {"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"},
+  //{"fskrawdemod",   CmdFSKrawdemod,     1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to bin (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"},
+  {"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"},
   {"grid",          CmdGrid,            1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},

-  {"hexsamples",    CmdHexsamples,      0, "<blocks> [<offset>] -- Dump big buffer as hex bytes"},  
+  {"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"},
   {"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)"},
+  {"rtrim",         CmdRtrim,           1, "<location to end trace> -- Trim samples from right of trace"},
+  //{"mandemod",      CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"},
+  {"manrawdecode",  Cmdmandecoderaw,    1, "Manchester decode binary stream in DemodBuffer"},

   {"manmod",        CmdManchesterMod,   1, "[clock rate] -- Manchester modulate a binary stream"},
   {"manmod",        CmdManchesterMod,   1, "[clock rate] -- Manchester modulate a binary stream"},

-  {"norm",          CmdNorm,            1, "Normalize max/min to +/-500"},
-  {"plot",          CmdPlot,            1, "Show graph window"},
-  {"samples",       CmdSamples,         0, "[128 - 16000] -- Get raw samples for graph window"},
+  {"norm",          CmdNorm,            1, "Normalize max/min to +/-128"},
+  //{"nrzdetectclock",CmdDetectNRZClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
+  //{"nrzrawdemod",   CmdNRZrawDemod,     1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate nrz tags and output binary (args optional)"},
+  {"plot",          CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},
+  //{"pskdetectclock",CmdDetectPSKClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
+  {"printdemodbuffer",CmdPrintDemodBuff,1, "[x] -- 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)"},
+  //{"psk1rawdemod",  CmdPSK1rawDemod,    1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk1 tags and output binary (args optional)"},
+  //{"psk2rawdemod",  CmdPSK2rawDemod,    1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk2 tags and output binary (args optional)"},
+  {"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"},
   {"save",          CmdSave,            1, "<filename> -- Save trace (from graph window)"},
   {"scale",         CmdScale,           1, "<int> -- Set cursor display scale"},

-  {"threshold",     CmdThreshold,       1, "Maximize/minimize every value in the graph window depending on threshold"},
+  {"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"},
+  //{"threshold",     CmdThreshold,       1, "<threshold> -- Maximize/minimize every value in the graph window depending on threshold"},
+  {"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}
 };
   {"zerocrossings", CmdZerocrossings,   1, "Count time between zero-crossings"},
   {NULL, NULL, 0, NULL}
 };