X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/a6293168da03b547d7cb283f94d8e7aa7109069a..484b2b741d999b77017299fb8be40ac5df40a371:/client/cmdlf.c

diff --git a/client/cmdlf.c b/client/cmdlf.c
index af24aa80..29fe6f12 100644
--- a/client/cmdlf.c
+++ b/client/cmdlf.c
@@ -12,7 +12,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
-//#include "proxusb.h"
 #include "proxmark3.h"
 #include "data.h"
 #include "graph.h"
@@ -20,116 +19,266 @@
 #include "cmdparser.h"
 #include "cmdmain.h"
 #include "cmddata.h"
+#include "util.h"
 #include "cmdlf.h"
 #include "cmdlfhid.h"
+#include "cmdlfawid.h"
 #include "cmdlfti.h"
 #include "cmdlfem4x.h"
 #include "cmdlfhitag.h"
 #include "cmdlft55xx.h"
 #include "cmdlfpcf7931.h"
 #include "cmdlfio.h"
-
+#include "lfdemod.h"
+#include "cmdlfviking.h"
+#include "cmdlfpresco.h"
 static int CmdHelp(const char *Cmd);
 
-/* send a command before reading */
+int usage_lf_cmdread(void) {
+	PrintAndLog("Usage: lf cmdread d <delay period> z <zero period> o <one period> c <cmdbytes> [H]");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h             This help");
+	PrintAndLog("       H             Freqency High (134 KHz), default is 'Low (125KHz)'");
+	PrintAndLog("       d <delay>     delay OFF period, (dec)");
+	PrintAndLog("       z <zero>      time period ZERO, (dec)");
+	PrintAndLog("       o <one>       time period ONE, (dec)");
+	PrintAndLog("       c <cmd>       Command bytes");
+	PrintAndLog("       ************* All periods in microseconds (ms)");
+	PrintAndLog("Examples:");
+	PrintAndLog("      lf cmdread d 80 z 100 o 200 c 11000");
+	PrintAndLog("      lf cmdread d 80 z 100 o 100 c 11000 H");
+	return 0;
+}
+int usage_lf_read(void){
+	PrintAndLog("Usage: lf read [h] [s]");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h            This help");
+	PrintAndLog("       s            silent run no printout");
+	PrintAndLog("This function takes no arguments. ");
+	PrintAndLog("Use 'lf config' to set parameters.");
+	return 0;
+}
+int usage_lf_snoop(void) {
+	PrintAndLog("Usage: lf snoop");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h            This help");
+	PrintAndLog("This function takes no arguments. ");
+	PrintAndLog("Use 'lf config' to set parameters.");
+	return 0;
+}
+int usage_lf_config(void) {
+	PrintAndLog("Usage: lf config [H|<divisor>] [b <bps>] [d <decim>] [a 0|1]");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h             This help");
+	PrintAndLog("       L             Low frequency (125 KHz)");
+	PrintAndLog("       H             High frequency (134 KHz)");
+	PrintAndLog("       q <divisor>   Manually set divisor. 88-> 134KHz, 95-> 125 Hz");
+	PrintAndLog("       b <bps>       Sets resolution of bits per sample. Default (max): 8");
+	PrintAndLog("       d <decim>     Sets decimation. A value of N saves only 1 in N samples. Default: 1");
+	PrintAndLog("       a [0|1]       Averaging - if set, will average the stored sample value when decimating. Default: 1");
+	PrintAndLog("       t <threshold> Sets trigger threshold. 0 means no threshold (range: 0-128)");
+	PrintAndLog("Examples:");
+	PrintAndLog("      lf config b 8 L");
+	PrintAndLog("                    Samples at 125KHz, 8bps.");
+	PrintAndLog("      lf config H b 4 d 3");
+	PrintAndLog("                    Samples at 134KHz, averages three samples into one, stored with ");
+	PrintAndLog("                    a resolution of 4 bits per sample.");
+	PrintAndLog("      lf read");
+	PrintAndLog("                    Performs a read (active field)");
+	PrintAndLog("      lf snoop");
+	PrintAndLog("                    Performs a snoop (no active field)");
+	return 0;
+}
+int usage_lf_simfsk(void) {
+	PrintAndLog("Usage: lf simfsk [c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>]");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h              This help");
+	PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
+	PrintAndLog("       i              invert data");
+	PrintAndLog("       H <fcHigh>     Manually set the larger Field Clock");
+	PrintAndLog("       L <fcLow>      Manually set the smaller Field Clock");
+	//PrintAndLog("       s              TBD- -to enable a gap between playback repetitions - default: no gap");
+	PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
+	PrintAndLog("\n  NOTE: if you set one clock manually set them all manually");
+	return 0;
+}
+int usage_lf_simask(void) {
+	PrintAndLog("Usage: lf simask [c <clock>] [i] [b|m|r] [s] [d <raw hex to sim>]");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h              This help");
+	PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
+	PrintAndLog("       i              invert data");
+	PrintAndLog("       b              sim ask/biphase");
+	PrintAndLog("       m              sim ask/manchester - Default");
+	PrintAndLog("       r              sim ask/raw");
+	PrintAndLog("       s              TBD- -to enable a gap between playback repetitions - default: no gap");
+	PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
+	return 0;
+}
+int usage_lf_simpsk(void) {
+	PrintAndLog("Usage: lf simpsk [1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>]");
+	PrintAndLog("Options:        ");
+	PrintAndLog("       h              This help");
+	PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
+	PrintAndLog("       i              invert data");
+	PrintAndLog("       1              set PSK1 (default)");
+	PrintAndLog("       2              set PSK2");
+	PrintAndLog("       3              set PSK3");
+	PrintAndLog("       r <carrier>    2|4|8 are valid carriers: default = 2");
+	PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
+	return 0;
+}
+int usage_lf_find(void){
+    PrintAndLog("Usage:  lf search <0|1> [u]");
+    PrintAndLog("     <use data from Graphbuffer> , if not set, try reading data from tag.");
+    PrintAndLog("     [Search for Unknown tags] , if not set, reads only known tags.");
+    PrintAndLog("");
+    PrintAndLog("    sample: lf search     = try reading data from tag & search for known tags");
+    PrintAndLog("          : lf search 1   = use data from GraphBuffer & search for known tags");
+    PrintAndLog("          : lf search u   = try reading data from tag & search for known and unknown tags");
+    PrintAndLog("          : lf search 1 u = use data from GraphBuffer & search for known and unknown tags");
+	return 0;
+}
+
+
+/* send a LF command before reading */
 int CmdLFCommandRead(const char *Cmd)
 {
-	static char dummy[3];
+	static char dummy[3] = {0x20,0x00,0x00};
+	UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K};
+	bool errors = FALSE;
 
-	dummy[0]= ' ';
+  	uint8_t cmdp = 0;
+	int strLength = 0;
 
-	UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K};
-	sscanf(Cmd, "%"lli" %"lli" %"lli" %s %s", &c.arg[0], &c.arg[1], &c.arg[2],(char*)(&c.d.asBytes),(char*)(&dummy+1));
-	// in case they specified 'h'
-	strcpy((char *)&c.d.asBytes + strlen((char *)c.d.asBytes), dummy);
+	while(param_getchar(Cmd, cmdp) != 0x00) {
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+			return usage_lf_cmdread();
+		case 'H':
+			dummy[1]='h';
+			cmdp++;
+			break;
+		case 'L':
+			cmdp++;
+			break;
+		case 'c':
+			strLength = param_getstr(Cmd, cmdp+1, (char *)&c.d.asBytes);
+			cmdp+=2;
+			break;
+		case 'd':
+			c.arg[0] = param_get32ex(Cmd, cmdp+1, 0, 10);
+			cmdp+=2;
+			break;
+		case 'z':
+			c.arg[1] = param_get32ex(Cmd, cmdp+1, 0, 10);
+			cmdp+=2;
+			break;
+		case 'o':
+			c.arg[2] = param_get32ex(Cmd, cmdp+1, 0, 10);
+			cmdp+=2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+			errors = 1;
+			break;
+		}
+		if(errors) break;
+	}
+	// No args
+	if (cmdp == 0) errors = 1;
+
+	//Validations
+	if (errors) return usage_lf_cmdread();
+	
+	// in case they specified 'H'
+	strcpy((char *)&c.d.asBytes + strLength, dummy);
+
+	clearCommandBuffer();
 	SendCommand(&c);
 	return 0;
 }
 
 int CmdFlexdemod(const char *Cmd)
 {
-	int i;
-	for (i = 0; i < GraphTraceLen; ++i) {
-		if (GraphBuffer[i] < 0) {
-			GraphBuffer[i] = -1;
-		} else {
-			GraphBuffer[i] = 1;
-		}
-	}
+  int i;
+  for (i = 0; i < GraphTraceLen; ++i) {
+    if (GraphBuffer[i] < 0) {
+      GraphBuffer[i] = -1;
+    } else {
+      GraphBuffer[i] = 1;
+    }
+  }
 
-	#define LONG_WAIT 100
-	int start;
-	for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
-		int first = GraphBuffer[start];
-		for (i = start; i < start + LONG_WAIT; i++) {
-			if (GraphBuffer[i] != first) {
-				break;
-			}
-		}
-		if (i == (start + LONG_WAIT)) {
-			break;
-		}
-	}
-	if (start == GraphTraceLen - LONG_WAIT) {
-		PrintAndLog("nothing to wait for");
-		return 0;
-	}
+#define LONG_WAIT 100
+  int start;
+  for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
+    int first = GraphBuffer[start];
+    for (i = start; i < start + LONG_WAIT; i++) {
+      if (GraphBuffer[i] != first) {
+        break;
+      }
+    }
+    if (i == (start + LONG_WAIT)) {
+      break;
+    }
+  }
+  if (start == GraphTraceLen - LONG_WAIT) {
+    PrintAndLog("nothing to wait for");
+    return 0;
+  }
 
-	GraphBuffer[start] = 2;
-	GraphBuffer[start+1] = -2;
+  GraphBuffer[start] = 2;
+  GraphBuffer[start+1] = -2;
+	uint8_t bits[64] = {0x00};
 
-	uint8_t bits[64];
+	int bit, sum;
+  i = start;
+  for (bit = 0; bit < 64; bit++) {
+		sum = 0;
+		for (int j = 0; j < 16; j++) {
+      sum += GraphBuffer[i++];
+    }
 
-	int bit;
-	i = start;
-	for (bit = 0; bit < 64; bit++) {
-		int j;
-		int sum = 0;
-		for (j = 0; j < 16; j++) {
-			sum += GraphBuffer[i++];
-		}
-		if (sum > 0) {
-			bits[bit] = 1;
-		} else {
-			bits[bit] = 0;
-		}
-		PrintAndLog("bit %d sum %d", bit, sum);
-	}
+		bits[bit] = (sum > 0) ? 1 : 0;
 
-	for (bit = 0; bit < 64; bit++) {
-		int j;
-		int sum = 0;
-		for (j = 0; j < 16; j++) {
-			sum += GraphBuffer[i++];
-		}
-		if (sum > 0 && bits[bit] != 1) {
-			PrintAndLog("oops1 at %d", bit);
-		}
-		if (sum < 0 && bits[bit] != 0) {
-			PrintAndLog("oops2 at %d", bit);
-		}
-	}
+    PrintAndLog("bit %d sum %d", bit, sum);
+  }
 
-	GraphTraceLen = 32*64;
-	i = 0;
-	int phase = 0;
-	for (bit = 0; bit < 64; bit++) {
-		if (bits[bit] == 0) {
-			phase = 0;
-		} else {
-			phase = 1;
-		}
-		int j;
-		for (j = 0; j < 32; j++) {
-			GraphBuffer[i++] = phase;
-			phase = !phase;
-		}
-	}
+  for (bit = 0; bit < 64; bit++) {
+    int j;
+    int sum = 0;
+    for (j = 0; j < 16; j++) {
+      sum += GraphBuffer[i++];
+    }
+    if (sum > 0 && bits[bit] != 1) {
+      PrintAndLog("oops1 at %d", bit);
+    }
+    if (sum < 0 && bits[bit] != 0) {
+      PrintAndLog("oops2 at %d", bit);
+    }
+  }
 
-	RepaintGraphWindow();
-	return 0;
-}
+	// HACK writing back to graphbuffer.
+  GraphTraceLen = 32*64;
+  i = 0;
+  int phase = 0;
+  for (bit = 0; bit < 64; bit++) {
 	
+		phase = (bits[bit] == 0) ? 0 : 1;
+		
+    int j;
+    for (j = 0; j < 32; j++) {
+      GraphBuffer[i++] = phase;
+      phase = !phase;
+    }
+  }
+
+  RepaintGraphWindow();
+  return 0;
+}
+  
 int CmdIndalaDemod(const char *Cmd)
 {
 	// Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
@@ -137,15 +286,20 @@ int CmdIndalaDemod(const char *Cmd)
 	int state = -1;
 	int count = 0;
 	int i, j;
+
 	// worst case with GraphTraceLen=64000 is < 4096
 	// under normal conditions it's < 2048
+
 	uint8_t rawbits[4096];
 	int rawbit = 0;
 	int worst = 0, worstPos = 0;
- // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
+	// PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
+	
+	// loop through raw signal - since we know it is psk1 rf/32 fc/2 skip every other value (+=2)
 	for (i = 0; i < GraphTraceLen-1; i += 2) {
 		count += 1;
 		if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
+			// appears redundant - marshmellow
 			if (state == 0) {
 				for (j = 0; j <  count - 8; j += 16) {
 					rawbits[rawbit++] = 0;
@@ -158,6 +312,7 @@ int CmdIndalaDemod(const char *Cmd)
 			state = 1;
 			count = 0;
 		} else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
+			//appears redundant
 			if (state == 1) {
 				for (j = 0; j <  count - 8; j += 16) {
 					rawbits[rawbit++] = 1;
@@ -171,10 +326,14 @@ int CmdIndalaDemod(const char *Cmd)
 			count = 0;
 		}
 	}
-	if (rawbit>0){
+
+	if ( rawbit>0 ){
 		PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32);
 		PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
-	} else return 0;
+	} else {
+		return 0;
+	}
+
 	// Finding the start of a UID
 	int uidlen, long_wait;
 	if (strcmp(Cmd, "224") == 0) {
@@ -184,6 +343,7 @@ int CmdIndalaDemod(const char *Cmd)
 		uidlen = 64;
 		long_wait = 29;
 	}
+
 	int start;
 	int first = 0;
 	for (start = 0; start <= rawbit - uidlen; start++) {
@@ -197,6 +357,7 @@ int CmdIndalaDemod(const char *Cmd)
 			break;
 		}
 	}
+  
 	if (start == rawbit - uidlen + 1) {
 		PrintAndLog("nothing to wait for");
 		return 0;
@@ -210,12 +371,12 @@ int CmdIndalaDemod(const char *Cmd)
 	}
 
 	// Dumping UID
-	uint8_t bits[224];
-	char showbits[225];
-	showbits[uidlen]='\0';
+	uint8_t bits[224] = {0x00};
+	char showbits[225] = {0x00};
 	int bit;
 	i = start;
 	int times = 0;
+	
 	if (uidlen > rawbit) {
 		PrintAndLog("Warning: not enough raw bits to get a full UID");
 		for (bit = 0; bit < rawbit; bit++) {
@@ -233,46 +394,46 @@ int CmdIndalaDemod(const char *Cmd)
 		}
 		times = 1;
 	}
-	
+  
 	//convert UID to HEX
 	uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
 	int idx;
-	uid1=0;
-	uid2=0;
+	uid1 = uid2 = 0;
+	
 	if (uidlen==64){
 		for( idx=0; idx<64; idx++) {
-				if (showbits[idx] == '0') {
-				uid1=(uid1<<1)|(uid2>>31);
-				uid2=(uid2<<1)|0;
-				} else {
-				uid1=(uid1<<1)|(uid2>>31);
-				uid2=(uid2<<1)|1;
-				} 
-			}
+			if (showbits[idx] == '0') {
+				uid1 = (uid1<<1) | (uid2>>31);
+				uid2 = (uid2<<1) | 0;
+			} else {
+				uid1 = (uid1<<1) | (uid2>>31);
+				uid2 = (uid2<<1) | 1;
+			} 
+		}
 		PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2);
-	}
-	else {
-		uid3=0;
-		uid4=0;
-		uid5=0;
-		uid6=0;
-		uid7=0;
+	} else {
+		uid3 = uid4 = uid5 = uid6 = uid7 = 0;
+
 		for( idx=0; idx<224; 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 (showbits[idx] == '0') uid7=(uid7<<1)|0;
-				else uid7=(uid7<<1)|1;
-			}
+			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 (showbits[idx] == '0') 
+				uid7 = (uid7<<1) | 0;
+			else 
+				uid7 = (uid7<<1) | 1;
+		}
 		PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
 	}
 
 	// Checking UID against next occurrences
+	int failed = 0;
 	for (; i + uidlen <= rawbit;) {
-		int failed = 0;
+		failed = 0;
 		for (bit = 0; bit < uidlen; bit++) {
 			if (bits[bit] != rawbits[i++]) {
 				failed = 1;
@@ -284,18 +445,17 @@ int CmdIndalaDemod(const char *Cmd)
 		}
 		times += 1;
 	}
+
 	PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen);
 
 	// Remodulating for tag cloning
-	GraphTraceLen = 32*uidlen;
+	// HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod) 
+	// since this changes graphbuffer data.
+	GraphTraceLen = 32 * uidlen;
 	i = 0;
 	int phase = 0;
 	for (bit = 0; bit < uidlen; bit++) {
-		if (bits[bit] == 0) {
-			phase = 0;
-		} else {
-			phase = 1;
-		}
+		phase = (bits[bit] == 0) ? 0 : 1;
 		int j;
 		for (j = 0; j < 32; j++) {
 			GraphBuffer[i++] = phase;
@@ -309,65 +469,147 @@ int CmdIndalaDemod(const char *Cmd)
 
 int CmdIndalaClone(const char *Cmd)
 {
+  UsbCommand c;
 	unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-	UsbCommand c;
-	uid1=0;
-	uid2=0;
-	uid3=0;
-	uid4=0;
-	uid5=0;
-	uid6=0;
-	uid7=0;  
-	int n = 0, i = 0;
-
-	if (strchr(Cmd,'l') != 0) {
-		while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-			uid1 = (uid1 << 4) | (uid2 >> 28);
-			uid2 = (uid2 << 4) | (uid3 >> 28);
-			uid3 = (uid3 << 4) | (uid4 >> 28);
-			uid4 = (uid4 << 4) | (uid5 >> 28);
-			uid5 = (uid5 << 4) | (uid6 >> 28);
-			uid6 = (uid6 << 4) | (uid7 >> 28);
-			uid7 = (uid7 << 4) | (n & 0xf);
-		}
-		PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
-		c.cmd = CMD_INDALA_CLONE_TAG_L;
-		c.d.asDwords[0] = uid1;
-		c.d.asDwords[1] = uid2;
-		c.d.asDwords[2] = uid3;
-		c.d.asDwords[3] = uid4;
-		c.d.asDwords[4] = uid5;
-		c.d.asDwords[5] = uid6;
-		c.d.asDwords[6] = uid7;
-	} 
-	else 
+
+	uid1 =  uid2 = uid3 = uid4 = uid5 = uid6 = uid7 = 0;
+  int n = 0, i = 0;
+
+  if (strchr(Cmd,'l') != 0) {
+    while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
+      uid1 = (uid1 << 4) | (uid2 >> 28);
+      uid2 = (uid2 << 4) | (uid3 >> 28);
+      uid3 = (uid3 << 4) | (uid4 >> 28);
+      uid4 = (uid4 << 4) | (uid5 >> 28);
+      uid5 = (uid5 << 4) | (uid6 >> 28);
+      uid6 = (uid6 << 4) | (uid7 >> 28);
+    	uid7 = (uid7 << 4) | (n & 0xf);
+    }
+    PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
+    c.cmd = CMD_INDALA_CLONE_TAG_L;
+    c.d.asDwords[0] = uid1;
+    c.d.asDwords[1] = uid2;
+    c.d.asDwords[2] = uid3;
+    c.d.asDwords[3] = uid4;
+    c.d.asDwords[4] = uid5;
+    c.d.asDwords[5] = uid6;
+    c.d.asDwords[6] = uid7;
+	} else {
+    while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
+      uid1 = (uid1 << 4) | (uid2 >> 28);
+      uid2 = (uid2 << 4) | (n & 0xf);
+    }
+    PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
+    c.cmd = CMD_INDALA_CLONE_TAG;
+    c.arg[0] = uid1;
+    c.arg[1] = uid2;
+  }
+
+	clearCommandBuffer();
+  SendCommand(&c);
+  return 0;
+}
+
+int CmdLFSetConfig(const char *Cmd)
+{
+	uint8_t divisor =  0;//Frequency divisor
+	uint8_t bps = 0; // Bits per sample
+	uint8_t decimation = 0; //How many to keep
+	bool averaging = 1; // Defaults to true
+	bool errors = FALSE;
+	int trigger_threshold = -1;//Means no change
+	uint8_t unsigned_trigg = 0;
+
+	uint8_t cmdp = 0;
+	while(param_getchar(Cmd, cmdp) != 0x00)
 	{
-		while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-			uid1 = (uid1 << 4) | (uid2 >> 28);
-			uid2 = (uid2 << 4) | (n & 0xf);
+		switch(param_getchar(Cmd, cmdp))
+		{
+		case 'h':
+			return usage_lf_config();
+		case 'H':
+			divisor = 88;
+			cmdp++;
+			break;
+		case 'L':
+			divisor = 95;
+			cmdp++;
+			break;
+		case 'q':
+			errors |= param_getdec(Cmd,cmdp+1,&divisor);
+			cmdp+=2;
+			break;
+		case 't':
+			errors |= param_getdec(Cmd,cmdp+1,&unsigned_trigg);
+			cmdp+=2;
+			if(!errors) trigger_threshold = unsigned_trigg;
+			break;
+		case 'b':
+			errors |= param_getdec(Cmd,cmdp+1,&bps);
+			cmdp+=2;
+			break;
+		case 'd':
+			errors |= param_getdec(Cmd,cmdp+1,&decimation);
+			cmdp+=2;
+			break;
+		case 'a':
+			averaging = param_getchar(Cmd,cmdp+1) == '1';
+			cmdp+=2;
+			break;
+		default:
+			PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+			errors = 1;
+			break;
 		}
-		PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
-		c.cmd = CMD_INDALA_CLONE_TAG;
-		c.arg[0] = uid1;
-		c.arg[1] = uid2;
+		if(errors) break;
 	}
 
+	// No args
+	if (cmdp == 0) errors = 1;
+
+	//Validations
+	if (errors) return usage_lf_config();
+	
+	//Bps is limited to 8, so fits in lower half of arg1
+	if (bps >> 4) bps = 8;
+
+	sample_config config = { decimation, bps, averaging, divisor, trigger_threshold };
+
+	//Averaging is a flag on high-bit of arg[1]
+	UsbCommand c = {CMD_SET_LF_SAMPLING_CONFIG};
+	memcpy(c.d.asBytes,&config,sizeof(sample_config));
+	clearCommandBuffer();
 	SendCommand(&c);
 	return 0;
 }
 
 int CmdLFRead(const char *Cmd)
 {
-	UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K};
-	// 'h' means higher-low-frequency, 134 kHz
-	if(*Cmd == 'h') {
-		c.arg[0] = 1;
-	} else if (*Cmd == '\0') {
-		c.arg[0] = 0;
-	} else if (sscanf(Cmd, "%"lli, &c.arg[0]) != 1) {
-		PrintAndLog("use 'read' or 'read h', or 'read <divisor>'");
-		return 0;
+	bool arg1 = false;
+	uint8_t cmdp =  param_getchar(Cmd, 0);
+	
+	if ( cmdp == 'h' || cmdp == 'H') return usage_lf_read();
+	
+	 //suppress print
+	if ( cmdp == 's' || cmdp == 'S') arg1 = true;
+
+	UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {arg1,0,0}};
+	clearCommandBuffer();
+	SendCommand(&c);
+	if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
+		PrintAndLog("command execution time out");
+		return 1;
 	}
+	return 0;
+}
+
+int CmdLFSnoop(const char *Cmd)
+{
+	uint8_t cmdp = param_getchar(Cmd, 0);
+	if(cmdp == 'h' || cmdp == 'H') return usage_lf_snoop();
+	
+	UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
+	clearCommandBuffer();	
 	SendCommand(&c);
 	WaitForResponse(CMD_ACK,NULL);
 	return 0;
@@ -375,251 +617,632 @@ int CmdLFRead(const char *Cmd)
 
 static void ChkBitstream(const char *str)
 {
-	int i;
-
-	/* convert to bitstream if necessary */
-	for (i = 0; i < (int)(GraphTraceLen / 2); i++)
-	{
-		if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0)
-		{
-			CmdBitstream(str);
-			break;
-		}
-	}
+  int i;
+ 
+  /* convert to bitstream if necessary */
+	for (i = 0; i < (int)(GraphTraceLen / 2); i++){
+		if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {
+      CmdGetBitStream("");
+      break;
+    }
+  }
 }
-
+//Attempt to simulate any wave in buffer (one bit per output sample)
+// converts GraphBuffer to bitstream (based on zero crossings) if needed.
 int CmdLFSim(const char *Cmd)
 {
-	int i;
+	int i,j;
 	static int gap;
 
 	sscanf(Cmd, "%i", &gap);
 
-	/* convert to bitstream if necessary */
+	// convert to bitstream if necessary 
 	ChkBitstream(Cmd);
 
-	PrintAndLog("Sending data, please wait...");
-	for (i = 0; i < GraphTraceLen; i += 48) {
-		UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};
-		int j;
-		for (j = 0; j < 48; j++) {
+	//can send only 512 bits at a time (1 byte sent per bit...)
+	printf("Sending [%d bytes]", GraphTraceLen);
+	for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {
+		UsbCommand c = {CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};
+
+		for (j = 0; j < USB_CMD_DATA_SIZE; j++) {
 			c.d.asBytes[j] = GraphBuffer[i+j];
 		}
+		clearCommandBuffer();
 		SendCommand(&c);
 		WaitForResponse(CMD_ACK,NULL);
+		printf(".");
 	}
 
-	PrintAndLog("Starting simulator...");
+	PrintAndLog("\nStarting to simulate");
 	UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
+	clearCommandBuffer();
 	SendCommand(&c);
 	return 0;
 }
 
-int CmdLFSimBidir(const char *Cmd)
+// by marshmellow - sim ask data given clock, fcHigh, fcLow, invert 
+// - allow pull data from DemodBuffer
+int CmdLFfskSim(const char *Cmd)
 {
-	/* Set ADC to twice the carrier for a slight supersampling */
-	UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
-	SendCommand(&c);
-	return 0;
-}
+	//might be able to autodetect FCs and clock from Graphbuffer if using demod buffer
+	// otherwise will need FChigh, FClow, Clock, and bitstream
+  uint8_t fcHigh=0, fcLow=0, clk=0;
+  uint8_t invert=0;
+  bool errors = FALSE;
+  char hexData[32] = {0x00}; // store entered hex data
+  uint8_t data[255] = {0x00}; 
+  int dataLen = 0;
+  uint8_t cmdp = 0;
+  while(param_getchar(Cmd, cmdp) != 0x00)
+  {
+    switch(param_getchar(Cmd, cmdp))
+    {
+    case 'h':
+      return usage_lf_simfsk();
+    case 'i':
+      invert = 1;
+      cmdp++;
+      break;
+    case 'c':
+      errors |= param_getdec(Cmd,cmdp+1,&clk);
+      cmdp+=2;
+      break;
+    case 'H':
+      errors |= param_getdec(Cmd,cmdp+1,&fcHigh);
+      cmdp+=2;
+      break;
+    case 'L':
+      errors |= param_getdec(Cmd,cmdp+1,&fcLow);
+      cmdp+=2;
+      break;
+    //case 's':
+    //  separator=1;
+    //  cmdp++;
+    //  break;
+    case 'd':
+      dataLen = param_getstr(Cmd, cmdp+1, hexData);
+      if (dataLen==0) {
+        errors=TRUE; 
+      } else {
+        dataLen = hextobinarray((char *)data, hexData);
+      }   
+      if (dataLen==0) errors=TRUE; 
+      if (errors) PrintAndLog ("Error getting hex data");
+      cmdp+=2;
+      break;
+    default:
+      PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+      errors = TRUE;
+      break;
+    }
+    if(errors) break;
+  }
+  if(cmdp == 0 && DemodBufferLen == 0)
+  {
+    errors = TRUE;// No args
+  }
 
-/* simulate an LF Manchester encoded tag with specified bitstream, clock rate and inter-id gap */
-int CmdLFSimManchester(const char *Cmd)
-{
-	static int clock, gap;
-	static char data[1024], gapstring[8];
+  //Validations
+  if(errors)
+  {
+    return usage_lf_simfsk();
+  }
 
-	/* get settings/bits */
-	sscanf(Cmd, "%i %s %i", &clock, &data[0], &gap);
+  if (dataLen == 0){ //using DemodBuffer 
+    if (clk==0 || fcHigh==0 || fcLow==0){ //manual settings must set them all
+      uint8_t ans = fskClocks(&fcHigh, &fcLow, &clk, 0);
+      if (ans==0){
+        if (!fcHigh) fcHigh=10;
+        if (!fcLow) fcLow=8;
+        if (!clk) clk=50;
+      }
+    }
+  } else {
+    setDemodBuf(data, dataLen, 0);
+  }
 
-	/* clear our graph */
-	ClearGraph(0);
+	//default if not found
+  if (clk == 0) clk = 50;
+  if (fcHigh == 0) fcHigh = 10;
+  if (fcLow == 0) fcLow = 8;
 
-	/* fill it with our bitstream */
-	for (int i = 0; i < strlen(data) ; ++i)
-		AppendGraph(0, clock, data[i]- '0');
+  uint16_t arg1, arg2;
+  arg1 = fcHigh << 8 | fcLow;
+  arg2 = invert << 8 | clk;
+  size_t size = DemodBufferLen;
+  if (size > USB_CMD_DATA_SIZE) {
+    PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
+    size = USB_CMD_DATA_SIZE;
+  } 
+  UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 
-	/* modulate */
-	CmdManchesterMod("");
+  memcpy(c.d.asBytes, DemodBuffer, size);
+	clearCommandBuffer();
+  SendCommand(&c);
+  return 0;
+}
 
-	/* show what we've done */
-	RepaintGraphWindow();
+// by marshmellow - sim ask data given clock, invert, manchester or raw, separator 
+// - allow pull data from DemodBuffer
+int CmdLFaskSim(const char *Cmd)
+{
+  //autodetect clock from Graphbuffer if using demod buffer
+	// needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
+  uint8_t encoding = 1, separator = 0;
+  uint8_t clk=0, invert=0;
+  bool errors = FALSE;
+  char hexData[32] = {0x00}; 
+  uint8_t data[255]= {0x00}; // store entered hex data
+  int dataLen = 0;
+  uint8_t cmdp = 0;
+  while(param_getchar(Cmd, cmdp) != 0x00)
+  {
+    switch(param_getchar(Cmd, cmdp))
+    {
+    case 'h':
+      return usage_lf_simask();
+    case 'i':
+      invert = 1;
+      cmdp++;
+      break;
+    case 'c':
+      errors |= param_getdec(Cmd,cmdp+1,&clk);
+      cmdp+=2;
+      break;
+    case 'b':
+      encoding=2; //biphase
+      cmdp++;
+      break;
+    case 'm':
+      encoding=1;
+      cmdp++;
+      break;
+    case 'r':
+      encoding=0;
+      cmdp++;
+      break;
+    case 's':
+      separator=1;
+      cmdp++;
+      break;
+    case 'd':
+      dataLen = param_getstr(Cmd, cmdp+1, hexData);
+      if (dataLen==0) {
+        errors=TRUE; 
+      } else {
+        dataLen = hextobinarray((char *)data, hexData);
+      }
+      if (dataLen==0) errors=TRUE; 
+      if (errors) PrintAndLog ("Error getting hex data, datalen: %d",dataLen);
+        cmdp+=2;
+      break;
+    default:
+      PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+      errors = TRUE;
+      break;
+    }
+    if(errors) break;
+  }
+  if(cmdp == 0 && DemodBufferLen == 0)
+  {
+    errors = TRUE;// No args
+  }
 
-	/* simulate */
-	sprintf(&gapstring[0], "%i", gap);
-	CmdLFSim(gapstring);
-	return 0;
+  //Validations
+  if(errors)
+  {
+    return usage_lf_simask();
+  }
+  if (dataLen == 0){ //using DemodBuffer
+    if (clk == 0) clk = GetAskClock("0", false, false);
+  } else {
+    setDemodBuf(data, dataLen, 0);
+  }
+  if (clk == 0) clk = 64;
+  if (encoding == 0) clk = clk/2; //askraw needs to double the clock speed
+  uint16_t arg1, arg2;
+  size_t size=DemodBufferLen;
+  arg1 = clk << 8 | encoding;
+  arg2 = invert << 8 | separator;
+  if (size > USB_CMD_DATA_SIZE) {
+    PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
+    size = USB_CMD_DATA_SIZE;
+  }
+  UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
+  PrintAndLog("preparing to sim ask data: %d bits", size);
+  memcpy(c.d.asBytes, DemodBuffer, size);
+	clearCommandBuffer();
+  SendCommand(&c);
+  return 0;
 }
 
-int CmdLFSnoop(const char *Cmd)
+// by marshmellow - sim psk data given carrier, clock, invert 
+// - allow pull data from DemodBuffer or parameters
+int CmdLFpskSim(const char *Cmd)
 {
-	UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
-	// 'h' means higher-low-frequency, 134 kHz
-	c.arg[0] = 0;
-	c.arg[1] = -1;
-	if (*Cmd == 0) {
-		// empty
-	} else if (*Cmd == 'l') {
-		sscanf(Cmd, "l %"lli, &c.arg[1]);
-	} else if(*Cmd == 'h') {
-		c.arg[0] = 1;
-		sscanf(Cmd, "h %"lli, &c.arg[1]);
-	} else if (sscanf(Cmd, "%"lli" %"lli, &c.arg[0], &c.arg[1]) < 1) {
-		PrintAndLog("use 'snoop' or 'snoop {l,h} [trigger threshold]', or 'snoop <divisor> [trigger threshold]'");
-		return 0;
-	}
-	SendCommand(&c);
-	WaitForResponse(CMD_ACK,NULL);
-	return 0;
+  //might be able to autodetect FC and clock from Graphbuffer if using demod buffer
+  //will need carrier, Clock, and bitstream
+  uint8_t carrier=0, clk=0;
+  uint8_t invert=0;
+  bool errors = FALSE;
+  char hexData[32] = {0x00}; // store entered hex data
+  uint8_t data[255] = {0x00}; 
+  int dataLen = 0;
+  uint8_t cmdp = 0;
+  uint8_t pskType = 1;
+  while(param_getchar(Cmd, cmdp) != 0x00)
+  {
+    switch(param_getchar(Cmd, cmdp))
+    {
+    case 'h':
+      return usage_lf_simpsk();
+    case 'i':
+      invert = 1;
+      cmdp++;
+      break;
+    case 'c':
+      errors |= param_getdec(Cmd,cmdp+1,&clk);
+      cmdp+=2;
+      break;
+    case 'r':
+      errors |= param_getdec(Cmd,cmdp+1,&carrier);
+      cmdp+=2;
+      break;
+    case '1':
+      pskType=1;
+      cmdp++;
+      break;
+    case '2':
+      pskType=2;
+      cmdp++;
+      break;
+    case '3':
+      pskType=3;
+      cmdp++;
+      break;
+    case 'd':
+      dataLen = param_getstr(Cmd, cmdp+1, hexData);
+      if (dataLen==0) {
+        errors=TRUE; 
+      } else {
+        dataLen = hextobinarray((char *)data, hexData);
+      }    
+      if (dataLen==0) errors=TRUE; 
+      if (errors) PrintAndLog ("Error getting hex data");
+      cmdp+=2;
+      break;
+    default:
+      PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+      errors = TRUE;
+      break;
+    }
+    if (errors) break;
+  }
+  if (cmdp == 0 && DemodBufferLen == 0)
+  {
+    errors = TRUE;// No args
+  }
+
+  //Validations
+  if (errors)
+  {
+    return usage_lf_simpsk();
+  }
+  if (dataLen == 0){ //using DemodBuffer
+    PrintAndLog("Getting Clocks");
+    if (clk==0) clk = GetPskClock("", FALSE, FALSE);
+    PrintAndLog("clk: %d",clk);
+    if (!carrier) carrier = GetPskCarrier("", FALSE, FALSE); 
+    PrintAndLog("carrier: %d", carrier);
+  } else {
+    setDemodBuf(data, dataLen, 0);
+  }
+
+  if (clk <= 0) clk = 32;
+  if (carrier == 0) carrier = 2;
+  if (pskType != 1){
+    if (pskType == 2){
+      //need to convert psk2 to psk1 data before sim
+      psk2TOpsk1(DemodBuffer, DemodBufferLen);
+    } else {
+      PrintAndLog("Sorry, PSK3 not yet available");
+    }
+  }
+  uint16_t arg1, arg2;
+  arg1 = clk << 8 | carrier;
+  arg2 = invert;
+  size_t size=DemodBufferLen;
+  if (size > USB_CMD_DATA_SIZE) {
+    PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
+    size=USB_CMD_DATA_SIZE;
+  }
+  UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
+  PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size);
+  memcpy(c.d.asBytes, DemodBuffer, size);
+	clearCommandBuffer();
+  SendCommand(&c);
+  
+  return 0;
+}
+
+int CmdLFSimBidir(const char *Cmd)
+{
+  // Set ADC to twice the carrier for a slight supersampling
+  // HACK: not implemented in ARMSRC.
+  PrintAndLog("Not implemented yet.");
+  UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
+  SendCommand(&c);
+  return 0;
 }
 
 int CmdVchDemod(const char *Cmd)
 {
-	// Is this the entire sync pattern, or does this also include some
-	// data bits that happen to be the same everywhere? That would be
-	// lovely to know.
-	static const int SyncPattern[] = {
-		1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-		1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-		1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-		1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-		1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-		1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-		1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-		1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-		1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-		1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	};
-
-	// So first, we correlate for the sync pattern, and mark that.
-	int bestCorrel = 0, bestPos = 0;
-	int i;
-	// It does us no good to find the sync pattern, with fewer than
-	// 2048 samples after it...
-	for (i = 0; i < (GraphTraceLen-2048); i++) {
-		int sum = 0;
-		int j;
-		for (j = 0; j < arraylen(SyncPattern); j++) {
-			sum += GraphBuffer[i+j]*SyncPattern[j];
-		}
-		if (sum > bestCorrel) {
-			bestCorrel = sum;
-			bestPos = i;
-		}
-	}
-	PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
+  // Is this the entire sync pattern, or does this also include some
+  // data bits that happen to be the same everywhere? That would be
+  // lovely to know.
+  static const int SyncPattern[] = {
+    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  };
 
-	char bits[257];
-	bits[256] = '\0';
+  // So first, we correlate for the sync pattern, and mark that.
+  int bestCorrel = 0, bestPos = 0;
+  int i;
+  // It does us no good to find the sync pattern, with fewer than
+  // 2048 samples after it...
+  for (i = 0; i < (GraphTraceLen-2048); i++) {
+    int sum = 0;
+    int j;
+    for (j = 0; j < arraylen(SyncPattern); j++) {
+      sum += GraphBuffer[i+j]*SyncPattern[j];
+    }
+    if (sum > bestCorrel) {
+      bestCorrel = sum;
+      bestPos = i;
+    }
+  }
+  PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
 
-	int worst = INT_MAX;
-	int worstPos = 0;
+  char bits[257];
+  bits[256] = '\0';
 
-	for (i = 0; i < 2048; i += 8) {
-		int sum = 0;
-		int j;
-		for (j = 0; j < 8; j++) {
-			sum += GraphBuffer[bestPos+i+j];
-		}
-		if (sum < 0) {
-			bits[i/8] = '.';
-		} else {
-			bits[i/8] = '1';
-		}
-		if(abs(sum) < worst) {
-			worst = abs(sum);
-			worstPos = i;
-		}
-	}
-	PrintAndLog("bits:");
-	PrintAndLog("%s", bits);
-	PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
-
-	if (strcmp(Cmd, "clone")==0) {
-		GraphTraceLen = 0;
-		char *s;
-		for(s = bits; *s; s++) {
-			int j;
-			for(j = 0; j < 16; j++) {
-				GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
-			}
-		}
-		RepaintGraphWindow();
-	}
-	return 0;
+  int worst = INT_MAX;
+  int worstPos = 0;
+
+  for (i = 0; i < 2048; i += 8) {
+    int sum = 0;
+    int j;
+    for (j = 0; j < 8; j++) {
+      sum += GraphBuffer[bestPos+i+j];
+    }
+    if (sum < 0) {
+      bits[i/8] = '.';
+    } else {
+      bits[i/8] = '1';
+    }
+    if(abs(sum) < worst) {
+      worst = abs(sum);
+      worstPos = i;
+    }
+  }
+  PrintAndLog("bits:");
+  PrintAndLog("%s", bits);
+  PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
+
+  if (strcmp(Cmd, "clone")==0) {
+    GraphTraceLen = 0;
+    char *s;
+    for(s = bits; *s; s++) {
+      int j;
+      for(j = 0; j < 16; j++) {
+        GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
+      }
+    }
+    RepaintGraphWindow();
+  }
+  return 0;
 }
 
 //by marshmellow
-int CmdLFfind(const char *Cmd)
-{
-	int ans=0;
-	if (!offline){
-		ans=CmdLFRead("");
-		ans=CmdSamples("20000");
+int CmdLFfind(const char *Cmd) {
+	int ans = 0;
+	char cmdp = param_getchar(Cmd, 0);
+	char testRaw = param_getchar(Cmd, 1);
+	if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') return usage_lf_find();
+
+	if (!offline && (cmdp != '1')){
+		CmdLFRead("s");
+		getSamples("30000",false);
+	} else if (GraphTraceLen < 1000) {
+		PrintAndLog("Data in Graphbuffer was too small.");
+		return 0;
 	}
-	if (GraphTraceLen<1000) return 0;
+	if (cmdp == 'u' || cmdp == 'U') testRaw = 'u';
+
 	PrintAndLog("NOTE: some demods output possible binary\n  if it finds something that looks like a tag");
-	PrintAndLog("Checking for known tags:");
+	PrintAndLog("False Positives ARE possible\n");  
+	PrintAndLog("\nChecking for known tags:\n");
 
-	ans=Cmdaskmandemod("");
+	ans=CmdFSKdemodIO("");
 	if (ans>0) {
-		PrintAndLog("Valid EM410x ID Found!");
-		return 1;
+	PrintAndLog("\nValid IO Prox ID Found!");
+	return 1;
 	}
+
+	ans=CmdFSKdemodPyramid("");
+	if (ans>0) {
+	PrintAndLog("\nValid Pyramid ID Found!");
+	return 1;
+	}
+
+	ans=CmdFSKdemodParadox("");
+	if (ans>0) {
+	PrintAndLog("\nValid Paradox ID Found!");
+	return 1;
+	}
+
+	ans=CmdFSKdemodAWID("");
+	if (ans>0) {
+	PrintAndLog("\nValid AWID ID Found!");
+	return 1;
+	}
+
 	ans=CmdFSKdemodHID("");
 	if (ans>0) {
-		PrintAndLog("Valid HID Prox ID Found!");
-		return 1;
+	PrintAndLog("\nValid HID Prox ID Found!");
+	return 1;
 	}
-	ans=CmdFSKdemodIO("");
+
+	ans=CmdAskEM410xDemod("");
+	if (ans>0) {
+	PrintAndLog("\nValid EM410x ID Found!");
+	return 1;
+	}
+
+	ans=CmdG_Prox_II_Demod("");
 	if (ans>0) {
-		PrintAndLog("Valid IO Prox ID Found!");
+	PrintAndLog("\nValid Guardall G-Prox II ID Found!");
+	return 1;
+	}
+
+	ans=CmdFDXBdemodBI("");
+	if (ans>0) {
+		PrintAndLog("\nValid FDX-B ID Found!");
 		return 1;
 	}
-	//add psk and indala
+
+	ans=EM4x50Read("", false);
+	if (ans>0) {
+		PrintAndLog("\nValid EM4x50 ID Found!");
+		return 1;
+	}	
+
+	ans=CmdVikingDemod("");
+	if (ans>0) {
+		PrintAndLog("\nValid Viking ID Found!");
+		return 1;
+	}	
+
 	ans=CmdIndalaDecode("");
 	if (ans>0) {
-		PrintAndLog("Valid Indala ID Found!");
+		PrintAndLog("\nValid Indala ID Found!");
+		return 1;
+	}
+
+	ans=CmdPSKNexWatch("");
+	if (ans>0) {
+		PrintAndLog("\nValid NexWatch ID Found!");
 		return 1;
 	}
- // ans=CmdIndalaDemod("224");
- // if (ans>0) return 1;
-	PrintAndLog("No Known Tags Found!\n");
+	// TIdemod?
+	
+
+	PrintAndLog("\nNo Known Tags Found!\n");
+	if (testRaw=='u' || testRaw=='U'){
+		//test unknown tag formats (raw mode)
+		PrintAndLog("\nChecking for Unknown tags:\n");
+		ans=AutoCorrelate(4000, FALSE, FALSE);
+	
+		if (ans > 0) {
+
+			PrintAndLog("Possible Auto Correlation of %d repeating samples",ans);
+
+			if ( ans % 8 == 0)  {
+				int bytes = (ans / 8);
+				PrintAndLog("Possible %d bytes", bytes);
+				int blocks = 0;
+				if ( bytes % 2 == 0) {
+					blocks = (bytes / 2);	
+					PrintAndLog("Possible  2 blocks, width %d", blocks);
+				}
+				if ( bytes % 4 == 0) {
+					blocks = (bytes / 4);	
+					PrintAndLog("Possible  4 blocks, width %d", blocks);
+				}
+				if ( bytes % 8 == 0) {
+					blocks = (bytes / 8);	
+					PrintAndLog("Possible  8 blocks, width %d", blocks);
+				}
+				if ( bytes % 16 == 0) {
+					blocks = (bytes / 16);	
+					PrintAndLog("Possible 16 blocks, width %d", blocks);
+				}
+			}
+		}
+
+		ans=GetFskClock("",FALSE,FALSE); 
+		if (ans != 0){ //fsk
+			ans=FSKrawDemod("",TRUE);
+			if (ans>0) {
+				PrintAndLog("\nUnknown FSK Modulated Tag Found!");
+				return 1;
+			}
+		}
+
+		ans=ASKDemod("0 0 0",TRUE,FALSE,1);
+		if (ans>0) {
+		  PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
+		  PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
+		  return 1;
+		}
+		
+		ans=CmdPSK1rawDemod("");
+		if (ans>0) {
+			PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
+			PrintAndLog("\nCould also be PSK3 - [currently not supported]");
+			PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod");
+			return 1;
+		}
+		PrintAndLog("\nNo Data Found!\n");
+	}
 	return 0;
 }
 
 static command_t CommandTable[] = 
 {
 	{"help",        CmdHelp,            1, "This help"},
-	{"cmdread",     CmdLFCommandRead,   0, "<off period> <'0' period> <'1' period> <command> ['h'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'h' for 134)"},
+	{"awid",        CmdLFAWID,          1, "{ AWID RFIDs... }"},
 	{"em4x",        CmdLFEM4X,          1, "{ EM4X RFIDs... }"},
-	{"flexdemod",   CmdFlexdemod,       1, "Demodulate samples for FlexPass"},
 	{"hid",         CmdLFHID,           1, "{ HID RFIDs... }"},
-	{"io",       	  CmdLFIO,	          1, "{ ioProx tags... }"},
+	{"hitag",       CmdLFHitag,         1, "{ HITAG RFIDs... }"},
+	{"io",			CmdLFIO,			1, "{ IOPROX RFIDs... }"},
+	{"pcf7931",     CmdLFPCF7931,       1, "{ PCF7931 RFIDs... }"},
+	{"presco",      CmdLFPresco,        1, "{ Presco RFIDs... }"},
+	{"ti",          CmdLFTI,            1, "{ TI RFIDs... }"},
+	{"t55xx",       CmdLFT55XX,         1, "{ T55X7 RFIDs... }"},
+	{"viking",      CmdLFViking,        1, "{ Viking RFIDs... }"},
+	{"config",      CmdLFSetConfig,     0, "Set config for LF sampling, bit/sample, decimation, frequency"},
+	{"cmdread",     CmdLFCommandRead,   0, "<off period> <'0' period> <'1' period> <command> ['h' 134] \n\t\t-- Modulate LF reader field to send command before read (all periods in microseconds)"},
+	{"flexdemod",   CmdFlexdemod,       1, "Demodulate samples for FlexPass"},
 	{"indalademod", CmdIndalaDemod,     1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
 	{"indalaclone", CmdIndalaClone,     0, "<UID> ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"},
-	{"read",        CmdLFRead,          0, "['h' or <divisor>] -- Read 125/134 kHz LF ID-only tag (option 'h' for 134, alternatively: f=12MHz/(divisor+1))"},
-	{"search",      CmdLFfind,          1, "Read and Search for valid known tag (in offline mode it you can load first then search)"},
+	{"read",        CmdLFRead,          0, "['s' silent] Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"},
+	{"search",      CmdLFfind,          1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) \n\t\t-- 'u' to search for unknown tags"},
 	{"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
+	{"simask",      CmdLFaskSim,        0, "[clock] [invert <1|0>] [biphase/manchester/raw <'b'|'m'|'r'>] [msg separator 's'] [d <hexdata>] \n\t\t-- Simulate LF ASK tag from demodbuffer or input"},
+	{"simfsk",      CmdLFfskSim,        0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] \n\t\t-- Simulate LF FSK tag from demodbuffer or input"},
+	{"simpsk",      CmdLFpskSim,        0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] \n\t\t-- Simulate LF PSK tag from demodbuffer or input"},
 	{"simbidir",    CmdLFSimBidir,      0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
-	{"simman",      CmdLFSimManchester, 0, "<Clock> <Bitstream> [GAP] Simulate arbitrary Manchester LF tag"},
-	{"snoop",       CmdLFSnoop,         0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
-	{"ti",          CmdLFTI,            1, "{ TI RFIDs... }"},
-	{"hitag",       CmdLFHitag,         1, "{ Hitag tags and transponders... }"},
+	{"snoop",       CmdLFSnoop,         0, "Snoop LF"},
 	{"vchdemod",    CmdVchDemod,        1, "['clone'] -- Demodulate samples for VeriChip"},
-	{"t55xx",       CmdLFT55XX,         1, "{ T55xx RFIDs... }"},
-	{"pcf7931",     CmdLFPCF7931,       1, "{PCF7931 RFIDs...}"},
 	{NULL, NULL, 0, NULL}
 };
 
-int CmdLF(const char *Cmd)
-{
+int CmdLF(const char *Cmd) {
+	clearCommandBuffer();
 	CmdsParse(CommandTable, Cmd);
 	return 0; 
 }
 
-int CmdHelp(const char *Cmd)
-{
+int CmdHelp(const char *Cmd) {
 	CmdsHelp(CommandTable);
 	return 0;
 }