X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/411105e03629542fad02902e18248288812a6f87..2a1a6aa38260b85589ed39a4cde4a8a25052d379:/client/cmddata.c?ds=inline

diff --git a/client/cmddata.c b/client/cmddata.c
index 556ede06..acb1359e 100644
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -8,27 +8,242 @@
 // Data and Graph commands
 //-----------------------------------------------------------------------------
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-#include "proxmark3.h"
-#include "data.h"
-#include "ui.h"
-#include "graph.h"
-#include "cmdparser.h"
+#include <stdio.h>    // also included in util.h
+#include <string.h>   // also included in util.h
+#include <limits.h>   // for CmdNorm INT_MIN && INT_MAX
+#include "data.h"     // also included in util.h
+#include "cmddata.h"
 #include "util.h"
 #include "cmdmain.h"
-#include "cmddata.h"
-#include "lfdemod.h"
-#include "usb_cmd.h"
-#include "crc.h"
+#include "proxmark3.h"
+#include "ui.h"       // for show graph controls
+#include "graph.h"    // for graph data
+#include "cmdparser.h"// already included in cmdmain.h
+#include "usb_cmd.h"  // already included in cmdmain.h and proxmark3.h
+#include "lfdemod.h"  // for demod code
+#include "crc.h"      // for pyramid checksum maxim
+#include "crc16.h"    // for FDXB demod checksum
+#include "loclass/cipherutils.h" // for decimating samples in getsamples
 
 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
-uint8_t g_debugMode;
-int DemodBufferLen;
+uint8_t g_debugMode=0;
+size_t DemodBufferLen=0;
 static int CmdHelp(const char *Cmd);
 
+int usage_data_printdemodbuf(void){
+	PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
+	PrintAndLog("Options:");
+	PrintAndLog("       h          This help");
+	PrintAndLog("       x          output in hex (omit for binary output)");
+	PrintAndLog("       o <offset> enter offset in # of bits");
+	PrintAndLog("       l <length> enter length to print in # of bits or hex characters respectively");
+	return 0;	
+}
+int usage_data_askem410xdemod(void){
+	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;
+}
+int usage_data_manrawdecode(void){
+	PrintAndLog("Usage:  data manrawdecode [invert] [maxErr]");
+	PrintAndLog("     Takes 10 and 01 and converts to 0 and 1 respectively");
+	PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");
+	PrintAndLog("  [invert]  invert output");		
+	PrintAndLog("  [maxErr]  set number of errors allowed (default = 20)");		
+	PrintAndLog("");
+	PrintAndLog("    sample: data manrawdecode   = decode manchester bitstream from the demodbuffer");
+	return 0;
+}
+int usage_data_biphaserawdecode(void){
+	PrintAndLog("Usage:  data biphaserawdecode [offset] [invert] [maxErr]");
+	PrintAndLog("     Converts 10 or 01 to 1 and 11 or 00 to 0");
+	PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");
+	PrintAndLog("     --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
+	PrintAndLog("");
+	PrintAndLog("     [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
+	PrintAndLog("     [invert <0|1>], set to 1 to invert output");
+	PrintAndLog("     [maxErr int],   set max errors tolerated - default=20");
+	PrintAndLog("");
+	PrintAndLog("    sample: data biphaserawdecode     = decode biphase bitstream from the demodbuffer");
+	PrintAndLog("    sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
+	return 0;
+}
+int usage_data_rawdemod(void){
+	PrintAndLog("Usage:  data rawdemod [modulation] <help>|<options>");
+	PrintAndLog("   [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");		
+	PrintAndLog("         'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
+	PrintAndLog("   <help> as 'h', prints the help for the specific modulation");	
+	PrintAndLog("   <options> see specific modulation help for optional parameters");				
+	PrintAndLog("");
+	PrintAndLog("    sample: data rawdemod fs h         = print help specific to fsk demod");
+	PrintAndLog("          : data rawdemod fs           = demod GraphBuffer using: fsk - autodetect");
+	PrintAndLog("          : data rawdemod ab           = demod GraphBuffer using: ask/biphase - autodetect");
+	PrintAndLog("          : data rawdemod am           = demod GraphBuffer using: ask/manchester - autodetect");
+	PrintAndLog("          : data rawdemod ar           = demod GraphBuffer using: ask/raw - autodetect");
+	PrintAndLog("          : data rawdemod nr           = demod GraphBuffer using: nrz/direct - autodetect");
+	PrintAndLog("          : data rawdemod p1           = demod GraphBuffer using: psk1 - autodetect");
+	PrintAndLog("          : data rawdemod p2           = demod GraphBuffer using: psk2 - autodetect");
+	return 0;
+}
+int usage_data_rawdemod_am(void){
+	PrintAndLog("Usage:  data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
+	PrintAndLog("     ['s'] optional, check for Sequence Terminator");
+	PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
+	PrintAndLog("     <invert>, 1 to invert output");
+	PrintAndLog("     [set maximum allowed errors], default = 100");
+	PrintAndLog("     [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
+	PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
+	PrintAndLog("");
+	PrintAndLog("    sample: data rawdemod am        = demod an ask/manchester tag from GraphBuffer");
+	PrintAndLog("          : data rawdemod am 32     = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
+	PrintAndLog("          : 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;
+}
+int usage_data_rawdemod_ab(void){
+	PrintAndLog("Usage:  data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
+	PrintAndLog("     [offset], offset to begin biphase, default=0");
+	PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
+	PrintAndLog("     <invert>, 1 to invert output");
+	PrintAndLog("     [set maximum allowed errors], default = 100");
+	PrintAndLog("     [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
+	PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
+	PrintAndLog("     NOTE: <invert>  can be entered as second or third argument");
+	PrintAndLog("     NOTE: <amplify> can be entered as first, second or last argument");
+	PrintAndLog("     NOTE: any other arg must have previous args set to work");
+	PrintAndLog("");
+	PrintAndLog("     NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
+	PrintAndLog("");
+	PrintAndLog("    sample: data rawdemod ab              = demod an ask/biph tag from GraphBuffer");
+	PrintAndLog("          : data rawdemod ab 0 a          = demod an ask/biph tag from GraphBuffer, amplified");
+	PrintAndLog("          : data rawdemod ab 1 32         = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
+	PrintAndLog("          : data rawdemod ab 0 32 1       = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
+	PrintAndLog("          : data rawdemod ab 0 1          = demod an ask/biph tag from GraphBuffer while inverting data");
+	PrintAndLog("          : data rawdemod ab 0 64 1 0     = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
+	PrintAndLog("          : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
+	return 0;
+}
+int usage_data_rawdemod_ar(void){
+	PrintAndLog("Usage:  data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
+	PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
+	PrintAndLog("     <invert>, 1 to invert output");
+	PrintAndLog("     [set maximum allowed errors], default = 100");
+	PrintAndLog("     [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
+	PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
+	PrintAndLog("");
+	PrintAndLog("    sample: data rawdemod ar            = demod an ask tag from GraphBuffer");
+	PrintAndLog("          : data rawdemod ar a          = demod an ask tag from GraphBuffer, amplified");
+	PrintAndLog("          : data rawdemod ar 32         = demod an ask tag from GraphBuffer using a clock of RF/32");
+	PrintAndLog("          : data rawdemod ar 32 1       = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
+	PrintAndLog("          : data rawdemod ar 1          = demod an ask tag from GraphBuffer while inverting data");
+	PrintAndLog("          : data rawdemod ar 64 1 0     = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
+	PrintAndLog("          : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
+	return 0;
+}
+int usage_data_rawdemod_fs(void){
+	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;
+}
+int usage_data_rawdemod_nr(void){
+	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;
+}
+int usage_data_rawdemod_p1(void){
+	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;
+}
+int usage_data_rawdemod_p2(void){
+	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;
+}
+int usage_data_autocorr(void) {
+	PrintAndLog("Usage: data autocorr [window] [g]");
+	PrintAndLog("Options:");
+	PrintAndLog("       h              This help");
+	PrintAndLog("       [window]       window length for correlation - default = 4000");
+	PrintAndLog("       g              save back to GraphBuffer (overwrite)");
+	return 0;
+}
+int usage_data_undecimate(void){
+	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;
+}
+int usage_data_detectclock(void){
+	PrintAndLog("Usage:  data detectclock [modulation] <clock>");
+	PrintAndLog("     [modulation as char], specify the modulation type you want to detect the clock of");
+	PrintAndLog("     <clock>             , specify the clock (optional - to get best start position only)");
+	PrintAndLog("       'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
+	PrintAndLog("");
+	PrintAndLog("    sample: data detectclock a    = detect the clock of an ask modulated wave in the GraphBuffer");
+	PrintAndLog("            data detectclock f    = detect the clock of an fsk modulated wave in the GraphBuffer");
+	PrintAndLog("            data detectclock p    = detect the clock of an psk modulated wave in the GraphBuffer");
+	PrintAndLog("            data detectclock n    = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
+	return 0;
+}
+int usage_data_hex2bin(void){
+	PrintAndLog("Usage: data hex2bin <hex_digits>");
+	PrintAndLog("       This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
+	return 0;
+}
+int usage_data_bin2hex(void){
+	PrintAndLog("Usage: data bin2hex <binary_digits>");
+	PrintAndLog("       This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
+	return 0;
+}
+
 //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)
@@ -43,8 +258,7 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
 	for (; i < size; i++){
 		DemodBuffer[i]=buff[startIdx++];
 	}
-	DemodBufferLen=size;
-	return;
+	DemodBufferLen = size;
 }
 
 int CmdSetDebugMode(const char *Cmd)
@@ -65,7 +279,7 @@ void printDemodBuff(void)
 	}
 	if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
 
-	char *bin = sprint_bin_break(DemodBuffer,bitLen,16);
+	char *bin = sprint_bin_break(DemodBuffer, bitLen,16);
 	PrintAndLog("%s",bin);
 
 	return;
@@ -73,23 +287,56 @@ void printDemodBuff(void)
 
 int CmdPrintDemodBuff(const char *Cmd)
 {
-	char hex;
-	char printBuff[512]={0x00};
-	uint8_t numBits = DemodBufferLen & 0xFFFC;
-	sscanf(Cmd, "%c", &hex);
-	if (hex == 'h'){
-		PrintAndLog("Usage: data printdemodbuffer [x]");
-		PrintAndLog("Options:        ");
-		PrintAndLog("       h       This help");
-		PrintAndLog("       x       output in hex (omit for binary output)");
-		return 0;
+	char hex[512]={0x00};
+	bool hexMode = false;
+	bool errors = false;
+	uint32_t offset = 0; //could be size_t but no param_get16...
+	uint32_t length = 512;
+	char cmdp = 0;
+	while(param_getchar(Cmd, cmdp) != 0x00)
+	{
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+		case 'H':
+			return usage_data_printdemodbuf();
+		case 'x':
+		case 'X':
+			hexMode = true;
+			cmdp++;
+			break;
+		case 'o':
+		case 'O':
+			offset = param_get32ex(Cmd, cmdp+1, 0, 10);
+			if (!offset) errors = true;
+			cmdp += 2;
+			break;
+		case 'l':
+		case 'L':
+			length = param_get32ex(Cmd, cmdp+1, 512, 10);
+			if (!length) errors = true;
+			cmdp += 2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+			errors = true;
+			break;
+		}
+		if(errors) break;
 	}
-	if (hex == 'x'){
-		numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
+	//Validations
+	if(errors) return usage_data_printdemodbuf();
+	length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length; 
+	int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
+
+	if (hexMode){
+		char *buf = (char *) (DemodBuffer + offset);
+		numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
+		numBits = binarraytohex(hex, buf, numBits);
 		if (numBits==0) return 0;
-		PrintAndLog("DemodBuffer: %s",printBuff);
+		PrintAndLog("DemodBuffer: %s",hex);		
 	} else {
-		printDemodBuff();
+		PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
 	}
 	return 1;
 }
@@ -232,7 +479,8 @@ int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
 
 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
 {
-	if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
+	bool st = TRUE;
+	if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
 	return AskEm410xDecode(verbose, hi, lo);
 }
 
@@ -243,19 +491,9 @@ int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
 int CmdAskEM410xDemod(const char *Cmd)
 {
 	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;
-	}
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')		
+		return usage_data_askem410xdemod();
+
 	uint64_t lo = 0;
 	uint32_t hi = 0;
 	return AskEm410xDemod(Cmd, &hi, &lo, true);
@@ -267,8 +505,7 @@ int CmdAskEM410xDemod(const char *Cmd)
 //verbose will print results and demoding messages
 //emSearch will auto search for EM410x format in bitstream
 //askType switches decode: ask/raw = 0, ask/manchester = 1 
-int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
-{
+int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
 	int invert=0;
 	int clk=0;
 	int maxErr=100;
@@ -277,7 +514,7 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 	char amp = param_getchar(Cmd, 0);
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
 	sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
-	if (!maxLen) maxLen = 512*64;
+	if (!maxLen) maxLen = BIGBUF_SIZE;
 	if (invert != 0 && invert != 1) {
 		PrintAndLog("Invalid argument: %s", Cmd);
 		return 0;
@@ -291,7 +528,14 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 	if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
 	if (BitLen<255) return 0;
 	if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
-
+	int foundclk = 0;
+	bool st = false;
+	if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
+	if (st) {
+		*stCheck = st;
+		clk = (clk == 0) ? foundclk : clk;
+		if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
+	}
 	int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
 	if (errCnt<0 || BitLen<16){  //if fatal error (or -1)
 		if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
@@ -307,8 +551,8 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 	setDemodBuf(BitStream,BitLen,0);
 	if (verbose || g_debugMode){
 		if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
-		if (askType) PrintAndLog("ASK/Manchester decoded bitstream:");
-		else PrintAndLog("ASK/Raw decoded bitstream:");
+		if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
+		else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
 		// Now output the bitstream to the scrollback by line of 16 bits
 		printDemodBuff();
 		
@@ -320,6 +564,10 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 	}
 	return 1;
 }
+int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
+	bool st = false;
+	return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
+}
 
 //by marshmellow
 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
@@ -328,21 +576,15 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 int Cmdaskmandemod(const char *Cmd)
 {
 	char cmdp = param_getchar(Cmd, 0);
-	if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
-		PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
-		PrintAndLog("     <invert>, 1 to invert output");
-		PrintAndLog("     [set maximum allowed errors], default = 100");
-		PrintAndLog("     [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
-		PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
-		PrintAndLog("");
-		PrintAndLog("    sample: data rawdemod am        = demod an ask/manchester tag from GraphBuffer");
-		PrintAndLog("          : data rawdemod am 32     = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
-		PrintAndLog("          : data rawdemod am 32 1   = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
-		PrintAndLog("          : data rawdemod am 1      = demod an ask/manchester tag from GraphBuffer while inverting data");
-		PrintAndLog("          : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
-		return 0;
-	}
+	if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_rawdemod_am();
+
+	bool st = TRUE;
+	if (Cmd[0]=='s') 
+		return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
+	else if (Cmd[1] == 's')
+		return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
+	else
 	return ASKDemod(Cmd, TRUE, TRUE, 1);
 }
 
@@ -355,18 +597,11 @@ int Cmdmandecoderaw(const char *Cmd)
 	int errCnt=0;
 	size_t size=0;
 	int invert=0;
-	size_t maxErr = 20;
+	int maxErr = 20;
 	char cmdp = param_getchar(Cmd, 0);
-	if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data manrawdecode [invert] [maxErr]");
-		PrintAndLog("     Takes 10 and 01 and converts to 0 and 1 respectively");
-		PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");
-		PrintAndLog("  [invert]  invert output");		
-		PrintAndLog("  [maxErr]  set number of errors allowed (default = 20)");		
-		PrintAndLog("");
-		PrintAndLog("    sample: data manrawdecode   = decode manchester bitstream from the demodbuffer");
-		return 0;
-	}
+	if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_manrawdecode();
+
 	if (DemodBufferLen==0) return 0;
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
 	int high=0,low=0;
@@ -414,20 +649,9 @@ int CmdBiphaseDecodeRaw(const char *Cmd)
 	size_t size=0;
 	int offset=0, invert=0, maxErr=20, errCnt=0;
 	char cmdp = param_getchar(Cmd, 0);
-	if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data biphaserawdecode [offset] [invert] [maxErr]");
-		PrintAndLog("     Converts 10 or 01 to 1 and 11 or 00 to 0");
-		PrintAndLog("     --must have binary sequence in demodbuffer (run data askrawdemod first)");
-		PrintAndLog("     --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
-		PrintAndLog("");
-		PrintAndLog("     [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
-		PrintAndLog("     [invert <0|1>], set to 1 to invert output");
-		PrintAndLog("     [maxErr int],   set max errors tolerated - default=20");
-		PrintAndLog("");
-		PrintAndLog("    sample: data biphaserawdecode     = decode biphase bitstream from the demodbuffer");
-		PrintAndLog("    sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
-		return 0;
-	}
+	if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_biphaserawdecode();
+
 	sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
 	if (DemodBufferLen==0){
 		PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
@@ -461,22 +685,24 @@ int CmdBiphaseDecodeRaw(const char *Cmd)
 int ASKbiphaseDemod(const char *Cmd, bool verbose)
 {
 	//ask raw demod GraphBuffer first
-	int offset=0, clk=0, invert=0, maxErr=0, ans=0;
-	ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
-	if (ans>0)
-		ans = ASKDemod(Cmd+1, FALSE, FALSE, 0);
-	else
-		ans = ASKDemod(Cmd, FALSE, FALSE, 0);
-	if (!ans) {
-		if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans);
-		return 0;
-	}
-
-	//attempt to Biphase decode DemodBuffer
-	size_t size = DemodBufferLen;
+	int offset=0, clk=0, invert=0, maxErr=0;
+	sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
+	
 	uint8_t BitStream[MAX_DEMOD_BUF_LEN];
-	memcpy(BitStream, DemodBuffer, DemodBufferLen); 
-	int errCnt = BiphaseRawDecode(BitStream, &size, offset, 0);
+	size_t size = getFromGraphBuf(BitStream);	
+	if (size == 0 ) {
+		if (g_debugMode) PrintAndLog("DEBUG: no data in graphbuf");  
+			return 0;  
+	}
+	//invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
+	int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);  
+	if ( errCnt < 0 || errCnt > maxErr ) {   
+		if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);  
+			return 0;  
+	} 
+
+	//attempt to Biphase decode BitStream
+	errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
 	if (errCnt < 0){
 		if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
 		return 0;
@@ -488,7 +714,7 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
 	//success set DemodBuffer and return
 	setDemodBuf(BitStream, size, 0);
 	if (g_debugMode || verbose){
-		PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
+		PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
 		printDemodBuff();
 	}
 	return 1;
@@ -497,29 +723,9 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
 int Cmdaskbiphdemod(const char *Cmd)
 {
 	char cmdp = param_getchar(Cmd, 0);
-	if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
-		PrintAndLog("     [offset], offset to begin biphase, default=0");
-		PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
-		PrintAndLog("     <invert>, 1 to invert output");
-		PrintAndLog("     [set maximum allowed errors], default = 100");
-		PrintAndLog("     [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
-		PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
-		PrintAndLog("     NOTE: <invert>  can be entered as second or third argument");
-		PrintAndLog("     NOTE: <amplify> can be entered as first, second or last argument");
-		PrintAndLog("     NOTE: any other arg must have previous args set to work");
-		PrintAndLog("");
-		PrintAndLog("     NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
-		PrintAndLog("");
-		PrintAndLog("    sample: data rawdemod ab              = demod an ask/biph tag from GraphBuffer");
-		PrintAndLog("          : data rawdemod ab 0 a          = demod an ask/biph tag from GraphBuffer, amplified");
-		PrintAndLog("          : data rawdemod ab 1 32         = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
-		PrintAndLog("          : data rawdemod ab 0 32 1       = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
-		PrintAndLog("          : data rawdemod ab 0 1          = demod an ask/biph tag from GraphBuffer while inverting data");
-		PrintAndLog("          : data rawdemod ab 0 64 1 0     = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
-		PrintAndLog("          : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
-		return 0;
-	}
+	if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_rawdemod_ab();
+
 	return ASKbiphaseDemod(Cmd, TRUE);
 }
 
@@ -531,7 +737,7 @@ int Cmdaskbiphdemod(const char *Cmd)
 int CmdG_Prox_II_Demod(const char *Cmd)
 {
 	if (!ASKbiphaseDemod(Cmd, FALSE)){
-		if (g_debugMode) PrintAndLog("ASKbiphaseDemod failed 1st try");
+		if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try");
 		return 0;
 	}
 	size_t size = DemodBufferLen;
@@ -541,46 +747,32 @@ int CmdG_Prox_II_Demod(const char *Cmd)
 		if (g_debugMode) PrintAndLog("Error gProxII_Demod");
 		return 0;
 	}
-	//got a good demod
-	uint32_t ByteStream[65] = {0x00};
+	//got a good demod of 96 bits
+	uint8_t ByteStream[8] = {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);
+	size_t startIdx = ans + 6; //start after 6 bit preamble
+
+	uint8_t bits_no_spacer[90];
+	//so as to not mess with raw DemodBuffer copy to a new sample array
+	memcpy(bits_no_spacer, DemodBuffer + startIdx, 90);
+	// remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72))
+	size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run
+	if (bitLen != 72) {
+		if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx);
 				return 0;
 			}
-			continue;
-		} 
-		if (keyCnt<8){ //lsb first
-			xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
-			keyCnt++;
-			if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
-			continue;
-		}
-		//lsb first
-		ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
-		bitCnt++;
-		if (bitCnt % 8 == 0){
-			if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
-			bitCnt=0;
-			ByteCnt++;
-		}
-	}
-	for (uint8_t i = 0; i < ByteCnt; i++){
-		ByteStream[i] ^= xorKey; //xor
-		if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
+	// get key and then get all 8 bytes of payload decoded
+	xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8);
+	for (size_t idx = 0; idx < 8; idx++) {
+		ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey;
+		if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]);
 	}
-	//now ByteStream contains 64 bytes of decrypted raw tag data
+	//now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data
 	// 
 	uint8_t fmtLen = ByteStream[0]>>2;
 	uint32_t FC = 0;
 	uint32_t Card = 0;
+	//get raw 96 bits to print
 	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);
@@ -588,40 +780,53 @@ int CmdG_Prox_II_Demod(const char *Cmd)
 	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);
+		PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)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);    
+		PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
 	} else {
-		PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
+		PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
+		PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8)); 
 	}
 	PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
 	setDemodBuf(DemodBuffer+ans, 96, 0);
 	return 1;
 }
 
+//by marshmellow
+//see ASKDemod for what args are accepted
+int CmdVikingDemod(const char *Cmd)
+{
+	if (!ASKDemod(Cmd, false, false, 1)) {
+		if (g_debugMode) PrintAndLog("ASKDemod failed");
+		return 0;
+	}
+	size_t size = DemodBufferLen;
+	//call lfdemod.c demod for Viking
+	int ans = VikingDemod_AM(DemodBuffer, &size);
+	if (ans < 0) {
+		if (g_debugMode) PrintAndLog("Error Viking_Demod %d %s", ans, (ans == -5)?"[chksum error]":"");
+		return 0;
+	}
+	//got a good demod
+	uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
+	uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
+	uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
+	uint8_t  checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
+	PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
+	PrintAndLog("Raw: %08X%08X", raw1,raw2);
+	setDemodBuf(DemodBuffer+ans, 64, 0);
+	return 1;
+}
+
 //by marshmellow - see ASKDemod
 int Cmdaskrawdemod(const char *Cmd)
 {
 	char cmdp = param_getchar(Cmd, 0);
-	if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
-		PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
-		PrintAndLog("     <invert>, 1 to invert output");
-		PrintAndLog("     [set maximum allowed errors], default = 100");
-		PrintAndLog("     [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
-		PrintAndLog("     <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
-		PrintAndLog("");
-		PrintAndLog("    sample: data rawdemod ar            = demod an ask tag from GraphBuffer");
-		PrintAndLog("          : data rawdemod ar a          = demod an ask tag from GraphBuffer, amplified");
-		PrintAndLog("          : data rawdemod ar 32         = demod an ask tag from GraphBuffer using a clock of RF/32");
-		PrintAndLog("          : data rawdemod ar 32 1       = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
-		PrintAndLog("          : data rawdemod ar 1          = demod an ask tag from GraphBuffer while inverting data");
-		PrintAndLog("          : data rawdemod ar 64 1 0     = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
-		PrintAndLog("          : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
-		return 0;
-	}
+	if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_rawdemod_ar();
+	
 	return ASKDemod(Cmd, TRUE, FALSE, 0);
 }
 
@@ -669,22 +874,10 @@ int AutoCorrelate(int window, bool SaveGrph, bool verbose)
 	return Correlation;
 }
 
-int usage_data_autocorr(void)
-{
-	//print help
-	PrintAndLog("Usage: data autocorr [window] [g]");
-	PrintAndLog("Options:        ");
-	PrintAndLog("       h              This help");
-	PrintAndLog("       [window]       window length for correlation - default = 4000");
-	PrintAndLog("       g              save back to GraphBuffer (overwrite)");
-	return 0;
-}
-
 int CmdAutoCorr(const char *Cmd)
 {
 	char cmdp = param_getchar(Cmd, 0);
-	if (cmdp == 'h' || cmdp == 'H') 
-		return usage_data_autocorr();
+	if (cmdp == 'h' || cmdp == 'H') return usage_data_autocorr();
 	int window = 4000; //set default
 	char grph=0;
 	bool updateGrph = FALSE;
@@ -704,17 +897,17 @@ int CmdBitsamples(const char *Cmd)
 	int cnt = 0;
 	uint8_t got[12288];
 
-	GetFromBigBuf(got,sizeof(got),0);
-	WaitForResponse(CMD_ACK,NULL);
+	GetFromBigBuf(got, sizeof(got), 0);
+	WaitForResponse(CMD_ACK, NULL);
 
-		for (int j = 0; j < sizeof(got); j++) {
-			for (int k = 0; k < 8; k++) {
-				if(got[j] & (1 << (7 - k))) {
-					GraphBuffer[cnt++] = 1;
-				} else {
-					GraphBuffer[cnt++] = 0;
-				}
+	for (int j = 0; j < sizeof(got); j++) {
+		for (int k = 0; k < 8; k++) {
+			if(got[j] & (1 << (7 - k))) {
+				GraphBuffer[cnt++] = 1;
+			} else {
+				GraphBuffer[cnt++] = 0;
 			}
+		}
 	}
 	GraphTraceLen = cnt;
 	RepaintGraphWindow();
@@ -723,7 +916,7 @@ int CmdBitsamples(const char *Cmd)
 
 int CmdBuffClear(const char *Cmd)
 {
-	UsbCommand c = {CMD_BUFF_CLEAR};
+	UsbCommand c = {CMD_BUFF_CLEAR, {0,0,0}};
 	SendCommand(&c);
 	ClearGraph(true);
 	return 0;
@@ -731,9 +924,10 @@ int CmdBuffClear(const char *Cmd)
 
 int CmdDec(const char *Cmd)
 {
-	for (int i = 0; i < (GraphTraceLen / 2); ++i)
+	for (int i = 0; i < (GraphTraceLen >> 2); ++i)
 		GraphBuffer[i] = GraphBuffer[i * 2];
-	GraphTraceLen /= 2;
+
+	GraphTraceLen >>= 2;
 	PrintAndLog("decimated by 2");
 	RepaintGraphWindow();
 	return 0;
@@ -747,30 +941,25 @@ int CmdDec(const char *Cmd)
  */
 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;
-	}
+	char cmdp = param_getchar(Cmd, 0);
+	if (cmdp == 'h' || cmdp == 'H')
+		return usage_data_undecimate();
+
+	uint8_t factor = param_get8ex(Cmd, 0, 2, 10);
 
-	uint8_t factor = param_get8ex(Cmd, 0,2, 10);
 	//We have memory, don't we?
 	int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
 	uint32_t g_index = 0 ,s_index = 0;
-	while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
+	while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
 	{
 		int count = 0;
-		for(count = 0; count < factor && s_index+count < MAX_GRAPH_TRACE_LEN; count ++)
+		for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
 			swap[s_index+count] = GraphBuffer[g_index];
-		s_index+=count;
+		s_index += count;
+		g_index++;
 	}
 
-	memcpy(GraphBuffer,swap, s_index * sizeof(int));
+	memcpy(GraphBuffer, swap, s_index * sizeof(int));
 	GraphTraceLen = s_index;
 	RepaintGraphWindow();
 	return 0;
@@ -780,18 +969,17 @@ int CmdUndec(const char *Cmd)
 //shift graph zero up or down based on input + or -
 int CmdGraphShiftZero(const char *Cmd)
 {
-
-	int shift=0;
+	int shift = 0, shiftedVal = 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;
+		if (shiftedVal > 127) 
+			shiftedVal = 127;
+		else if (shiftedVal < -127) 
+			shiftedVal = -127;
+		GraphBuffer[i] = shiftedVal;
 	}
 	CmdNorm("");
 	return 0;
@@ -804,13 +992,16 @@ int CmdGraphShiftZero(const char *Cmd)
 int CmdAskEdgeDetect(const char *Cmd)
 {
 	int thresLen = 25;
+	int last = 0;
 	sscanf(Cmd, "%i", &thresLen); 
 
-	for(int i = 1; i<GraphTraceLen; i++){
-		if (GraphBuffer[i]-GraphBuffer[i-1]>=thresLen) //large jump up
-			GraphBuffer[i-1] = 127;
-		else if(GraphBuffer[i]-GraphBuffer[i-1]<=-1*thresLen) //large jump down
-			GraphBuffer[i-1] = -127;
+	for(int i = 1; i < GraphTraceLen; ++i){
+		if (GraphBuffer[i] - GraphBuffer[i-1] >= thresLen) //large jump up
+			last = 127;
+		else if(GraphBuffer[i] - GraphBuffer[i-1] <= -1 * thresLen) //large jump down
+			last = -127;
+			
+		GraphBuffer[i-1] = last;
 	}
 	RepaintGraphWindow();
 	return 0;
@@ -822,47 +1013,51 @@ int CmdAskEdgeDetect(const char *Cmd)
 int CmdDetectClockRate(const char *Cmd)
 {
 	char cmdp = param_getchar(Cmd, 0);
-	if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data detectclock [modulation] <clock>");
-		PrintAndLog("     [modulation as char], specify the modulation type you want to detect the clock of");
-		PrintAndLog("     <clock>             , specify the clock (optional - to get best start position only)");
-		PrintAndLog("       'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
-		PrintAndLog("");
-		PrintAndLog("    sample: data detectclock a    = detect the clock of an ask modulated wave in the GraphBuffer");
-		PrintAndLog("            data detectclock f    = detect the clock of an fsk modulated wave in the GraphBuffer");
-		PrintAndLog("            data detectclock p    = detect the clock of an psk modulated wave in the GraphBuffer");
-		PrintAndLog("            data detectclock n    = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
-	}
-	int ans=0;
-	if (cmdp == 'a'){
-		ans = GetAskClock(Cmd+1, true, false);
-	} else if (cmdp == 'f'){
-		ans = GetFskClock("", true, false);
-	} else if (cmdp == 'n'){
-		ans = GetNrzClock("", true, false);
-	} else if (cmdp == 'p'){
-		ans = GetPskClock("", true, false);
-	} else {
-		PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
+	if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_detectclock();
+
+	int ans = 0;
+	switch ( cmdp ) {
+		case 'a' :
+		case 'A' :
+			ans = GetAskClock(Cmd+1, true, false);
+			break;
+		case 'f' :
+		case 'F' :
+			ans = GetFskClock("", true, false);
+			break;
+		case 'n' :
+		case 'N' :
+			ans = GetNrzClock("", true, false);
+			break;
+		case 'p' :
+		case 'P' :
+			ans = GetPskClock("", true, false);
+			break;
+		default :
+			PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
+			break;
 	}
 	return ans;
 }
 
 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
 {
-	char *fskType;
+	static char fType[8];
+	memset(fType, 0x00, 8);	
+	char *fskType = fType;
 	if (fchigh==10 && fclow==8){
 		if (invert) //fsk2a
-			fskType = "FSK2a";
+			memcpy(fskType, "FSK2a", 5);
 		else //fsk2
-			fskType = "FSK2";
+			memcpy(fskType, "FSK2", 4);
 	} else if (fchigh == 8 && fclow == 5) {
 		if (invert)
-			fskType = "FSK1";
+			memcpy(fskType, "FSK1", 4);
 		else
-			fskType = "FSK1a";
+			memcpy(fskType, "FSK1a", 5);
 	} else {
-		fskType = "FSK??";
+		memcpy(fskType, "FSK??", 5);
 	}
 	return fskType;
 }
@@ -874,20 +1069,19 @@ char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
 int FSKrawDemod(const char *Cmd, bool verbose)
 {
 	//raw fsk demod  no manchester decoding no start bit finding just get binary from wave
-	//set defaults
-	int rfLen = 0;
-	int invert = 0;
-	int fchigh = 0;
-	int fclow = 0;
+	uint8_t rfLen, invert, fchigh, fclow;
 
+	//set defaults
 	//set options from parameters entered with the command
-	sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
-
+	rfLen = param_get8(Cmd, 0);
+	invert = param_get8(Cmd, 1);
+	fchigh = param_get8(Cmd, 2);
+	fclow = param_get8(Cmd, 3);
 	if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
-		 if (rfLen==1){
+		if (rfLen==1) {
 			invert = 1;   //if invert option only is used
 			rfLen = 0;
-		 }
+		}
 	}
 
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
@@ -895,34 +1089,34 @@ int FSKrawDemod(const char *Cmd, bool verbose)
 	if (BitLen==0) return 0;
 	//get field clock lengths
 	uint16_t fcs=0;
-	if (fchigh==0 || fclow == 0){
+	if (!fchigh || !fclow) {
 		fcs = countFC(BitStream, BitLen, 1);
-		if (fcs==0){
-			fchigh=10;
-			fclow=8;
-		}else{
-			fchigh = (fcs >> 8) & 0xFF;
-			fclow = fcs & 0xFF;
+		if (!fcs) {
+			fchigh = 10;
+			fclow = 8;
+		} else {
+			fchigh = (fcs >> 8) & 0x00FF;
+			fclow = fcs & 0x00FF;
 		}
 	}
 	//get bit clock length
-	if (rfLen==0){
+	if (!rfLen) {
 		rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
-		if (rfLen == 0) rfLen = 50;
+		if (!rfLen) rfLen = 50;
 	}
-	int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
-	if (size>0){
-		setDemodBuf(BitStream,size,0);
+	int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
+	if (size > 0) {
+		setDemodBuf(BitStream, size, 0);
 
 		// Now output the bitstream to the scrollback by line of 16 bits
 		if (verbose || g_debugMode) {
-			PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
-			PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
+			PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen,  (unsigned int)invert,  (unsigned int)fchigh,  (unsigned int)fclow);
+			PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
 			printDemodBuff();
 		}
 
 		return 1;
-	} else{
+	} else {
 		if (g_debugMode) PrintAndLog("no FSK data found");
 	}
 	return 0;
@@ -935,22 +1129,9 @@ int FSKrawDemod(const char *Cmd, bool verbose)
 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;
-	}
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_rawdemod_fs();
+
 	return FSKrawDemod(Cmd, TRUE);
 }
 
@@ -1094,8 +1275,6 @@ int CmdFSKdemodParadox(const char *Cmd)
 //print ioprox ID and some format details
 int CmdFSKdemodIO(const char *Cmd)
 {
-	//raw fsk demod no manchester decoding no start bit finding just get binary from wave
-	//set defaults
 	int idx=0;
 	//something in graphbuffer?
 	if (GraphTraceLen < 65) {
@@ -1184,11 +1363,6 @@ int CmdFSKdemodIO(const char *Cmd)
 //print full AWID Prox ID and some bit format details if found
 int CmdFSKdemodAWID(const char *Cmd)
 {
-
-	//int verbose=1;
-	//sscanf(Cmd, "%i", &verbose);
-
-	//raw fsk demod no manchester decoding no start bit finding just get binary from wave
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
 	size_t size = getFromGraphBuf(BitStream);
 	if (size==0) return 0;
@@ -1196,7 +1370,7 @@ int CmdFSKdemodAWID(const char *Cmd)
 	//get binary from fsk wave
 	int idx = AWIDdemodFSK(BitStream, &size);
 	if (idx<=0){
-		if (g_debugMode==1){
+		if (g_debugMode){
 			if (idx == -1)
 				PrintAndLog("DEBUG: Error - not enough samples");
 			else if (idx == -2)
@@ -1234,7 +1408,7 @@ int CmdFSKdemodAWID(const char *Cmd)
 
 	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");
+		if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
 		return 0;
 	}
 	// ok valid card found!
@@ -1247,37 +1421,51 @@ int CmdFSKdemodAWID(const char *Cmd)
 	// 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
 	// bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 	// |26 bit|   |-117--| |-----142------|
+    //
+	// 00110010 0 0000111110100000 00000000000100010010100010000111 1 000000000 
+	// bbbbbbbb w ffffffffffffffff cccccccccccccccccccccccccccccccc w xxxxxxxxx
+	// |50 bit|   |----4000------| |-----------2248975------------| 
 	// 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);
-		}
+	uint8_t fmtLen = bytebits_to_byte(BitStream, 8);
+	switch(fmtLen) {
+		case 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: %u - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
+			break;
+		case 50:
+			fc = bytebits_to_byte(BitStream + 9, 16);
+			cardnum = bytebits_to_byte(BitStream + 25, 32);
+			code1 = bytebits_to_byte(BitStream + 8, (fmtLen-32) );
+			code2 = bytebits_to_byte(BitStream + 8 + (fmtLen-32), 32);
+			PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, code2, rawHi2, rawHi, rawLo);
+			break;
+		default:
+			if (fmtLen > 32 ) {
+				cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
+				code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
+				code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
+				PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
+			} else {
+				cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
+				code1 = bytebits_to_byte(BitStream+8,fmtLen);
+				PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
+			}
+			break;		
 	}
+
 	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;
 }
 
@@ -1294,7 +1482,7 @@ int CmdFSKdemodPyramid(const char *Cmd)
 	//get binary from fsk wave
 	int idx = PyramiddemodFSK(BitStream, &size);
 	if (idx < 0){
-		if (g_debugMode==1){
+		if (g_debugMode){
 			if (idx == -5)
 				PrintAndLog("DEBUG: Error - not enough samples");
 			else if (idx == -1)
@@ -1328,7 +1516,7 @@ int CmdFSKdemodPyramid(const char *Cmd)
 	// 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
+	// p = CRC8maxim checksum
 	// (26 bit format shown)
 
 	//get bytes for checksum calc
@@ -1350,7 +1538,7 @@ int CmdFSKdemodPyramid(const char *Cmd)
 
 	size = removeParity(BitStream, idx+8, 8, 1, 120);
 	if (size != 105){
-		if (g_debugMode==1) 
+		if (g_debugMode) 
 			PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
 		return 0;
 	}
@@ -1375,39 +1563,33 @@ int CmdFSKdemodPyramid(const char *Cmd)
 	// 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
+	// p = CRC8-Maxim checksum
 	// (26 bit format shown)
 
 	//find start bit to get fmtLen
 	int j;
-	for (j=0; j<size; 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){
+	
+	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
+	} 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);
-		}
+		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);
@@ -1421,6 +1603,98 @@ int CmdFSKdemodPyramid(const char *Cmd)
 	return 1;
 }
 
+// FDX-B ISO11784/85 demod  (aka animal tag)  BIPHASE, inverted, rf/32,  with preamble of 00000000001 (128bits)
+// 8 databits + 1 parity (1)
+// CIITT 16 chksum
+// NATIONAL CODE, ICAR database
+// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
+// FLAG (animal/non-animal)
+/*
+38 IDbits   
+10 country code 
+1 extra app bit
+14 reserved bits
+1 animal bit
+16 ccitt CRC chksum over 64bit ID CODE.
+24 appli bits.
+
+-- sample: 985121004515220  [ 37FF65B88EF94 ]
+*/
+int CmdFDXBdemodBI(const char *Cmd){
+
+	int invert = 1;
+	int clk = 32;		
+	int errCnt = 0;
+	int maxErr = 0;
+	uint8_t BitStream[MAX_DEMOD_BUF_LEN];	
+	size_t size = getFromGraphBuf(BitStream);	
+	
+	errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
+	if ( errCnt < 0 || errCnt > maxErr ) { 
+		if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
+		return 0;
+	}
+
+	errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
+	if (errCnt < 0 || errCnt > maxErr ) {
+		if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
+		return 0;
+	} 
+	
+	int preambleIndex = FDXBdemodBI(BitStream, &size);
+	if (preambleIndex < 0){
+		if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
+		return 0;
+	}
+	if (size != 128) {
+		if (g_debugMode) PrintAndLog("Error incorrect data length found");
+		return 0;
+	}
+	
+	setDemodBuf(BitStream, 128, preambleIndex);
+
+	// remove marker bits (1's every 9th digit after preamble) (pType = 2)
+	size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
+	if ( size != 104 ) {
+		if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
+		return 0;
+	}
+	if (g_debugMode) {
+		char *bin = sprint_bin_break(BitStream,size,16);
+		PrintAndLog("DEBUG BinStream:\n%s",bin);
+	}
+	PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
+	if (g_debugMode) PrintAndLog("Start marker %d;   Size %d", preambleIndex, size);
+
+	//got a good demod
+	uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
+	uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
+	uint8_t dataBlockBit = BitStream[48];
+	uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
+	uint8_t animalBit = BitStream[63];
+	uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
+	uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
+
+	uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
+	uint8_t raw[8];
+	num_to_bytes(rawid, 8, raw);
+
+	if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
+
+	uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
+	PrintAndLog("Animal ID:     %04u-%012llu", countryCode, NationalCode);
+	PrintAndLog("National Code: %012llu", NationalCode);
+	PrintAndLog("CountryCode:   %04u", countryCode);
+	PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
+	PrintAndLog("reserved Code: %u", reservedCode);
+	PrintAndLog("Animal Tag:    %s", animalBit ? "True" : "False");
+	PrintAndLog("CRC:           0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
+	PrintAndLog("Extended:      0x%X\n", extended);
+	
+	return 1;
+}
+
+
 //by marshmellow
 //attempt to psk1 demod graph buffer
 int PSKDemod(const char *Cmd, bool verbose)
@@ -1434,17 +1708,20 @@ int PSKDemod(const char *Cmd, bool verbose)
 		clk=0;
 	}
 	if (invert != 0 && invert != 1) {
-		if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
+		if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
 		return 0;
 	}
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
 	size_t BitLen = getFromGraphBuf(BitStream);
-	if (BitLen==0) return -1;
+	if (BitLen==0) return 0;
 	uint8_t carrier=countFC(BitStream, BitLen, 0);
 	if (carrier!=2 && carrier!=4 && carrier!=8){
 		//invalid carrier
 		return 0;
 	}
+	if (g_debugMode){
+		PrintAndLog("Carrier: rf/%d",carrier);
+	}
 	int errCnt=0;
 	errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
 	if (errCnt > maxErr){
@@ -1479,66 +1756,39 @@ int CmdIndalaDecode(const char *Cmd)
 	}
 
 	if (!ans){
-		if (g_debugMode==1) 
+		if (g_debugMode) 
 			PrintAndLog("Error1: %d",ans);
 		return 0;
 	}
-	uint8_t invert=0;
-	ans = indala26decode(DemodBuffer,(size_t *) &DemodBufferLen, &invert);
-	if (ans < 1) {
-		if (g_debugMode==1)
+
+	uint8_t invert = 0;
+	size_t size = DemodBufferLen;
+	int startIdx = indala26decode(DemodBuffer, &size, &invert);
+	if (startIdx < 0 || size > 224) {
+		if (g_debugMode)
 			PrintAndLog("Error2: %d",ans);
 		return -1;
 	}
-	char showbits[251]={0x00};
+	setDemodBuf(DemodBuffer, size, (size_t)startIdx);
 	if (invert)
-		if (g_debugMode==1)
+		if (g_debugMode)
 			PrintAndLog("Had to invert bits");
 
+	PrintAndLog("BitLen: %d",DemodBufferLen);
 	//convert UID to HEX
 	uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-	int idx;
-	uid1=0;
-	uid2=0;
-	PrintAndLog("BitLen: %d",DemodBufferLen);
+	uid1=bytebits_to_byte(DemodBuffer,32);
+	uid2=bytebits_to_byte(DemodBuffer+32,32);
 	if (DemodBufferLen==64){
-		for( idx=0; idx<64; idx++) {
-			uid1=(uid1<<1)|(uid2>>31);
-			if (DemodBuffer[idx] == 0) {
-				uid2=(uid2<<1)|0;
-				showbits[idx]='0';
-			} else {
-				uid2=(uid2<<1)|1;
-				showbits[idx]='1';
-			}
-		}
-		showbits[idx]='\0';
-		PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
-	}
-	else {
-		uid3=0;
-		uid4=0;
-		uid5=0;
-		uid6=0;
-		uid7=0;
-		for( idx=0; idx<DemodBufferLen; idx++) {
-			uid1=(uid1<<1)|(uid2>>31);
-			uid2=(uid2<<1)|(uid3>>31);
-			uid3=(uid3<<1)|(uid4>>31);
-			uid4=(uid4<<1)|(uid5>>31);
-			uid5=(uid5<<1)|(uid6>>31);
-			uid6=(uid6<<1)|(uid7>>31);
-			if (DemodBuffer[idx] == 0) {
-				uid7=(uid7<<1)|0;
-				showbits[idx]='0';
-			}
-			else {
-				uid7=(uid7<<1)|1;
-				showbits[idx]='1';
-			}
-		}
-		showbits[idx]='\0';
-		PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
+		PrintAndLog("Indala UID=%s (%x%08x)",  sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
+	} else {
+		uid3=bytebits_to_byte(DemodBuffer+64,32);
+		uid4=bytebits_to_byte(DemodBuffer+96,32);
+		uid5=bytebits_to_byte(DemodBuffer+128,32);
+		uid6=bytebits_to_byte(DemodBuffer+160,32);
+		uid7=bytebits_to_byte(DemodBuffer+192,32);
+		PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", 
+		     sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
 	}
 	if (g_debugMode){
 		PrintAndLog("DEBUG: printing demodbuffer:");
@@ -1550,12 +1800,18 @@ int CmdIndalaDecode(const char *Cmd)
 int CmdPSKNexWatch(const char *Cmd)
 {
 	if (!PSKDemod("", false)) return 0;
+
 	uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
 	size_t startIdx = 0, size = DemodBufferLen; 
+	
+	// sanity check. 
+	if ( size < sizeof(preamble) + 100) return 0;
+	
 	bool invert = false;
 	if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
 		// if didn't find preamble try again inverting
 		if (!PSKDemod("1", false)) return 0; 
+
 		size = DemodBufferLen;
 		if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
 		invert = true;
@@ -1608,7 +1864,7 @@ int NRZrawDemod(const char *Cmd, bool verbose)
 	size_t BitLen = getFromGraphBuf(BitStream);
 	if (BitLen==0) return 0;
 	int errCnt=0;
-	errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
+	errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
 	if (errCnt > maxErr){
 		if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
 		return 0;
@@ -1633,19 +1889,9 @@ int NRZrawDemod(const char *Cmd, bool verbose)
 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;
-	}
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_rawdemod_nr();
+
 	return NRZrawDemod(Cmd, TRUE);
 }
 
@@ -1657,26 +1903,15 @@ int CmdPSK1rawDemod(const char *Cmd)
 {
 	int ans;
 	char cmdp = param_getchar(Cmd, 0);
-	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data rawdemod p1 [clock] <0|1> [maxError]");
-		PrintAndLog("     [set clock as integer] optional, if not set, autodetect.");
-		PrintAndLog("     <invert>, 1 for invert output");
-		PrintAndLog("     [set maximum allowed errors], default = 100.");
-		PrintAndLog("");
-		PrintAndLog("    sample: data rawdemod p1        = demod a psk1 tag from GraphBuffer");
-		PrintAndLog("          : data rawdemod p1 32     = demod a psk1 tag from GraphBuffer using a clock of RF/32");
-		PrintAndLog("          : data rawdemod p1 32 1   = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
-		PrintAndLog("          : data rawdemod p1 1      = demod a psk1 tag from GraphBuffer while inverting data");
-		PrintAndLog("          : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
-		return 0;
-	}
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_rawdemod_p1();
+
 	ans = PSKDemod(Cmd, TRUE);
 	//output
 	if (!ans){
 		if (g_debugMode) PrintAndLog("Error demoding: %d",ans); 
 		return 0;
 	}
- 
 	PrintAndLog("PSK1 demoded bitstream:");
 	// Now output the bitstream to the scrollback by line of 16 bits
 	printDemodBuff();
@@ -1687,22 +1922,12 @@ int CmdPSK1rawDemod(const char *Cmd)
 // takes same args as cmdpsk1rawdemod
 int CmdPSK2rawDemod(const char *Cmd)
 {
-	int ans=0;
+	int ans = 0;
 	char cmdp = param_getchar(Cmd, 0);
-	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data rawdemod p2 [clock] <0|1> [maxError]");
-		PrintAndLog("     [set clock as integer] optional, if not set, autodetect.");
-		PrintAndLog("     <invert>, 1 for invert output");
-		PrintAndLog("     [set maximum allowed errors], default = 100.");
-		PrintAndLog("");
-		PrintAndLog("    sample: data rawdemod p2         = demod a psk2 tag from GraphBuffer, autodetect clock");
-		PrintAndLog("          : data rawdemod p2 32      = demod a psk2 tag from GraphBuffer using a clock of RF/32");
-		PrintAndLog("          : data rawdemod p2 32 1    = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
-		PrintAndLog("          : data rawdemod p2 1       = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
-		PrintAndLog("          : data rawdemod p2 64 1 0  = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
-		return 0;
-	}
-	ans=PSKDemod(Cmd, TRUE);
+	if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
+		return usage_data_rawdemod_p2();
+
+	ans = PSKDemod(Cmd, TRUE);
 	if (!ans){
 		if (g_debugMode) PrintAndLog("Error demoding: %d",ans);  
 		return 0;
@@ -1718,51 +1943,37 @@ int CmdPSK2rawDemod(const char *Cmd)
 int CmdRawDemod(const char *Cmd)
 {
 	char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
-
-	if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd)<2) {
-		PrintAndLog("Usage:  data rawdemod [modulation] <help>|<options>");
-		PrintAndLog("   [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");		
-		PrintAndLog("         'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
-		PrintAndLog("   <help> as 'h', prints the help for the specific modulation");	
-		PrintAndLog("   <options> see specific modulation help for optional parameters");				
-		PrintAndLog("");
-		PrintAndLog("    sample: data rawdemod fs h         = print help specific to fsk demod");
-		PrintAndLog("          : data rawdemod fs           = demod GraphBuffer using: fsk - autodetect");
-		PrintAndLog("          : data rawdemod ab           = demod GraphBuffer using: ask/biphase - autodetect");
-		PrintAndLog("          : data rawdemod am           = demod GraphBuffer using: ask/manchester - autodetect");
-		PrintAndLog("          : data rawdemod ar           = demod GraphBuffer using: ask/raw - autodetect");
-		PrintAndLog("          : data rawdemod nr           = demod GraphBuffer using: nrz/direct - autodetect");
-		PrintAndLog("          : data rawdemod p1           = demod GraphBuffer using: psk1 - autodetect");
-		PrintAndLog("          : data rawdemod p2           = demod GraphBuffer using: psk2 - autodetect");
-		return 0;
-	}
 	char cmdp2 = Cmd[1];
 	int ans = 0;
-	if (cmdp == 'f' && cmdp2 == 's'){
+
+	if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd) < 2)
+		return usage_data_rawdemod();
+
+	if (cmdp == 'f' && cmdp2 == 's')
 		ans = CmdFSKrawdemod(Cmd+2);
-	} else if(cmdp == 'a' && cmdp2 == 'b'){
+	else if(cmdp == 'a' && cmdp2 == 'b')
 		ans = Cmdaskbiphdemod(Cmd+2);
-	} else if(cmdp == 'a' && cmdp2 == 'm'){
+	else if(cmdp == 'a' && cmdp2 == 'm')
 		ans = Cmdaskmandemod(Cmd+2);
-	} else if(cmdp == 'a' && cmdp2 == 'r'){
+	else if(cmdp == 'a' && cmdp2 == 'r')
 		ans = Cmdaskrawdemod(Cmd+2);
-	} else if(cmdp == 'n' && cmdp2 == 'r'){
+	else if(cmdp == 'n' && cmdp2 == 'r')
 		ans = CmdNRZrawDemod(Cmd+2);
-	} else if(cmdp == 'p' && cmdp2 == '1'){
+	else if(cmdp == 'p' && cmdp2 == '1')
 		ans = CmdPSK1rawDemod(Cmd+2);
-	} else if(cmdp == 'p' && cmdp2 == '2'){
+	else if(cmdp == 'p' && cmdp2 == '2')
 		ans = CmdPSK2rawDemod(Cmd+2);
-	} else { 
+	else
 		PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
-	}
+
 	return ans;
 }
-
+//iceman: diff sizes on the plotwindow?
 int CmdGrid(const char *Cmd)
 {
 	sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
-	PlotGridXdefault= PlotGridX;
-	PlotGridYdefault= PlotGridY;
+	PlotGridXdefault = PlotGridX;
+	PlotGridYdefault = PlotGridY;
 	RepaintGraphWindow();
 	return 0;
 }
@@ -1824,18 +2035,15 @@ int CmdHpf(const char *Cmd)
 
 	for (i = 10; i < GraphTraceLen; ++i)
 		accum += GraphBuffer[i];
+	
 	accum /= (GraphTraceLen - 10);
+	
 	for (i = 0; i < GraphTraceLen; ++i)
 		GraphBuffer[i] -= accum;
 
 	RepaintGraphWindow();
 	return 0;
 }
-typedef struct {
-	uint8_t * buffer;
-	uint32_t numbits;
-	uint32_t position;
-}BitstreamOut;
 
 bool _headBit( BitstreamOut *stream)
 {
@@ -1848,10 +2056,9 @@ uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
 {
 	int i;
 	uint8_t val = 0;
-	for(i =0 ; i < bits_per_sample; i++)
-	{
+	for(i = 0 ; i < bits_per_sample; i++)
 		val |= (_headBit(b) << (7-i));
-	}
+
 	return val;
 }
 
@@ -1866,40 +2073,38 @@ int getSamples(const char *Cmd, bool silent)
 
 	int n = strtol(Cmd, NULL, 0);
 
-	if (n == 0)
-		n = sizeof(got);
-
-	if (n > sizeof(got))
+	if ( n == 0 || n > sizeof(got))
 		n = sizeof(got);
 
 	PrintAndLog("Reading %d bytes from device memory\n", n);
 	GetFromBigBuf(got,n,0);
 	PrintAndLog("Data fetched");
 	UsbCommand response;
-	WaitForResponse(CMD_ACK, &response);
+	if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
+        PrintAndLog("timeout while waiting for reply.");
+		return 1;
+    }
+	
 	uint8_t bits_per_sample = 8;
 
 	//Old devices without this feature would send 0 at arg[0]
-	if(response.arg[0] > 0)
-	{
+	if (response.arg[0] > 0) {
 		sample_config *sc = (sample_config *) response.d.asBytes;
-		PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
-		    , sc->decimation);
+		PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
 		bits_per_sample = sc->bits_per_sample;
 	}
-	if(bits_per_sample < 8)
-	{
+	
+	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++) {
+		for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
 			uint8_t sample = getByte(bits_per_sample, &bout);
 			GraphBuffer[j] = ((int) sample )- 128;
 		}
 		GraphTraceLen = j;
 		PrintAndLog("Unpacked %d samples" , j );
-	}else
-	{
+	} else {
 		for (int j = 0; j < n; j++) {
 			GraphBuffer[j] = ((int)got[j]) - 128;
 		}
@@ -1920,11 +2125,11 @@ int CmdTuneSamples(const char *Cmd)
 	int timeout = 0;
 	printf("\nMeasuring antenna characteristics, please wait...");
 
-	UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
+	UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
+	clearCommandBuffer();
 	SendCommand(&c);
-
 	UsbCommand resp;
-	while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
+	while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
 		timeout++;
 		printf(".");
 		if (timeout > 7) {
@@ -1941,10 +2146,14 @@ int CmdTuneSamples(const char *Cmd)
 	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);
+	if ( vLf125 > 0 )
+		PrintAndLog("# LF antenna: %5.2f V @   125.00 kHz", vLf125/1000.0);
+	if ( vLf134 > 0 )
+		PrintAndLog("# LF antenna: %5.2f V @   134.00 kHz", vLf134/1000.0);
+	if ( peakv > 0 && peakf > 0 )
+		PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
+	if ( vHf > 0 )
+		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.
@@ -1970,11 +2179,9 @@ int CmdTuneSamples(const char *Cmd)
 		ShowGraphWindow();
 		RepaintGraphWindow();
 	}
-
 	return 0;
 }
 
-
 int CmdLoad(const char *Cmd)
 {
 	char filename[FILE_PATH_SIZE] = {0x00};
@@ -1986,7 +2193,7 @@ int CmdLoad(const char *Cmd)
 	
 	FILE *f = fopen(filename, "r");
 	if (!f) {
-		 PrintAndLog("couldn't open '%s'", filename);
+		PrintAndLog("couldn't open '%s'", filename);
 		return 0;
 	}
 
@@ -2005,11 +2212,13 @@ int CmdLoad(const char *Cmd)
 int CmdLtrim(const char *Cmd)
 {
 	int ds = atoi(Cmd);
-	if (GraphTraceLen<=0) return 0;
+
+	if (GraphTraceLen <= 0) return 0;
+
 	for (int i = ds; i < GraphTraceLen; ++i)
 		GraphBuffer[i-ds] = GraphBuffer[i];
-	GraphTraceLen -= ds;
 
+	GraphTraceLen -= ds;
 	RepaintGraphWindow();
 	return 0;
 }
@@ -2018,9 +2227,7 @@ int CmdLtrim(const char *Cmd)
 int CmdRtrim(const char *Cmd)
 {
 	int ds = atoi(Cmd);
-
 	GraphTraceLen = ds;
-
 	RepaintGraphWindow();
 	return 0;
 }
@@ -2031,17 +2238,14 @@ int CmdNorm(const char *Cmd)
 	int max = INT_MIN, min = INT_MAX;
 
 	for (i = 10; i < GraphTraceLen; ++i) {
-		if (GraphBuffer[i] > max)
-			max = GraphBuffer[i];
-		if (GraphBuffer[i] < min)
-			min = GraphBuffer[i];
+		if (GraphBuffer[i] > max) max = GraphBuffer[i];
+		if (GraphBuffer[i] < min) min = GraphBuffer[i];
 	}
 
 	if (max != min) {
 		for (i = 0; i < GraphTraceLen; ++i) {
-			GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 /
-				(max - min);
-				//marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
+			GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / (max - min);
+			//marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
 		}
 	}
 	RepaintGraphWindow();
@@ -2116,7 +2320,6 @@ int CmdDirectionalThreshold(const char *Cmd)
 		{
 			lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
 			GraphBuffer[i] = GraphBuffer[i-1];
-
 		}
 	}
 	GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
@@ -2153,18 +2356,99 @@ int CmdZerocrossings(const char *Cmd)
 	return 0;
 }
 
+/**
+ * @brief Utility for conversion via cmdline.
+ * @param Cmd
+ * @return
+ */
+int Cmdbin2hex(const char *Cmd)
+{
+	int bg =0, en =0;
+	if(param_getptr(Cmd, &bg, &en, 0))
+		return usage_data_bin2hex();
+
+	//Number of digits supplied as argument
+	size_t length = en  - bg +1;
+	size_t bytelen = (length+7) / 8;
+	uint8_t* arr = (uint8_t *) malloc(bytelen);
+	memset(arr, 0, bytelen);
+	BitstreamOut bout = { arr, 0, 0 };
+
+	for (; bg <= en ;bg++) {
+		char c = Cmd[bg];
+		if( c == '1')	pushBit(&bout, 1);
+		else if( c == '0')	pushBit(&bout, 0);
+		else PrintAndLog("Ignoring '%c'", c);
+	}
+
+	if (bout.numbits % 8 != 0)
+		printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
+
+	//Uses printf instead of PrintAndLog since the latter
+	// adds linebreaks to each printout - this way was more convenient since we don't have to
+	// allocate a string and write to that first...
+	for(size_t x = 0; x  < bytelen ; x++)
+		printf("%02X", arr[x]);
+
+	printf("\n");
+	free(arr);
+	return 0;
+}
+
+int Cmdhex2bin(const char *Cmd)
+{
+	int bg =0, en =0;
+	if(param_getptr(Cmd, &bg, &en, 0))  return usage_data_hex2bin();
+
+	while (bg <= en ) {
+		char x = Cmd[bg++];
+		// capitalize
+		if (x >= 'a' && x <= 'f')
+			x -= 32;
+		// convert to numeric value
+		if (x >= '0' && x <= '9')
+			x -= '0';
+		else if (x >= 'A' && x <= 'F')
+			x -= 'A' - 10;
+		else
+			continue;
+
+		//Uses printf instead of PrintAndLog since the latter
+		// adds linebreaks to each printout - this way was more convenient since we don't have to
+		// allocate a string and write to that first...
+
+		for(int i= 0 ; i < 4 ; ++i)
+			printf("%d",(x >> (3 - i)) & 1);
+	}
+	printf("\n");
+
+	return 0;
+}
+
+int CmdDataIIR(const char *Cmd){
+
+	uint8_t k = param_get8(Cmd,0);
+	//iceIIR_Butterworth(GraphBuffer, GraphTraceLen);
+	iceSimple_Filter(GraphBuffer, GraphTraceLen, k);
+	RepaintGraphWindow();
+	return 0;
+}
+
 static command_t CommandTable[] =
 {
 	{"help",            CmdHelp,            1, "This help"},
-	{"askedgedetect",   CmdAskEdgeDetect,   1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
+	{"askedgedetect",   CmdAskEdgeDetect,   1, "[threshold] Adjust Graph for manual ASK demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
 	{"askem410xdemod",  CmdAskEM410xDemod,  1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
 	{"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
+	{"askvikingdemod",  CmdVikingDemod,     1, "Demodulate a Viking AM tag from GraphBuffer"},
 	{"autocorr",        CmdAutoCorr,        1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
 	{"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
+	{"bin2hex",         Cmdbin2hex,         1, "<digits> -- Converts binary to hexadecimal"},
 	{"bitsamples",      CmdBitsamples,      0, "Get raw samples as bitstring"},
 	{"buffclear",       CmdBuffClear,       1, "Clear sample buffer and graph window"},
 	{"dec",             CmdDec,             1, "Decimate samples"},
-	{"detectclock",     CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
+	{"detectclock",     CmdDetectClockRate, 1, "[<a|f|n|p>] Detect ASK, FSK, NRZ, PSK clock rate of wave in GraphBuffer"},
+	{"fdxbdemod",       CmdFDXBdemodBI    , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
 	{"fskawiddemod",    CmdFSKdemodAWID,    1, "Demodulate an AWID FSK tag from GraphBuffer"},
 	//{"fskfcdetect",   CmdFSKfcDetect,     1, "Try to detect the Field Clock of an FSK wave"},
 	{"fskhiddemod",     CmdFSKdemodHID,     1, "Demodulate a HID FSK tag from GraphBuffer"},
@@ -2174,6 +2458,7 @@ static command_t CommandTable[] =
 	{"getbitstream",    CmdGetBitStream,    1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
 	{"grid",            CmdGrid,            1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
 	{"hexsamples",      CmdHexsamples,      0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
+	{"hex2bin",         Cmdhex2bin,         1, "<hexadecimal> -- Converts hexadecimal to binary"},
 	{"hide",            CmdHide,            1, "Hide graph window"},
 	{"hpf",             CmdHpf,             1, "Remove DC offset from trace"},
 	{"load",            CmdLoad,            1, "<filename> -- Load trace (to graph window"},
@@ -2182,24 +2467,25 @@ static command_t CommandTable[] =
 	{"manrawdecode",    Cmdmandecoderaw,    1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
 	{"norm",            CmdNorm,            1, "Normalize max/min to +/-128"},
 	{"plot",            CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},
-	{"printdemodbuffer",CmdPrintDemodBuff,  1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"},
+	{"printdemodbuffer",CmdPrintDemodBuff,  1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
 	{"pskindalademod",  CmdIndalaDecode,    1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
 	{"psknexwatchdemod",CmdPSKNexWatch,     1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
 	{"rawdemod",        CmdRawDemod,        1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},  
 	{"samples",         CmdSamples,         0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
 	{"save",            CmdSave,            1, "<filename> -- Save trace (from graph window)"},
 	{"scale",           CmdScale,           1, "<int> -- Set cursor display scale"},
-	{"setdebugmode",    CmdSetDebugMode,    1, "<0|1> -- Turn on or off Debugging Mode for demods"},
+	{"setdebugmode",    CmdSetDebugMode,    1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
 	{"shiftgraphzero",  CmdGraphShiftZero,  1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
 	{"dirthreshold",    CmdDirectionalThreshold,   1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
 	{"tune",            CmdTuneSamples,     0, "Get hw tune samples for graph window"},
 	{"undec",           CmdUndec,           1, "Un-decimate samples by 2"},
 	{"zerocrossings",   CmdZerocrossings,   1, "Count time between zero-crossings"},
+	{"iir",				CmdDataIIR,			0, "apply IIR buttersworth filter on plotdata"},
 	{NULL, NULL, 0, NULL}
 };
 
-int CmdData(const char *Cmd)
-{
+int CmdData(const char *Cmd){
+	clearCommandBuffer();
 	CmdsParse(CommandTable, Cmd);
 	return 0;
 }