X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/3606ac0a2b85923eb3a376747588e1515a044cc3..refs/pull/256/head:/armsrc/lfops.c?ds=sidebyside

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 8f611179..75aa1342 100644
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -17,7 +17,7 @@
 #include "lfdemod.h"
 #include "lfsampling.h"
 #include "protocols.h"
-#include "usb_cdc.h" //test
+#include "usb_cdc.h" // for usb_poll_validate_length
 
 /**
  * Function to do a modulation and then get samples.
@@ -37,6 +37,8 @@ void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t period_0, uint
 
 	sample_config sc = { 0,0,1, divisor_used, 0};
 	setSamplingConfig(&sc);
+	//clear read buffer
+	BigBuf_Clear_keep_EM();
 
 	/* Make sure the tag is reset */
 	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
@@ -73,8 +75,6 @@ void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t period_0, uint
 	DoAcquisition_config(false);
 }
 
-
-
 /* blank r/w tag data stream
 ...0000000000000000 01111111
 1010101010101010101010101010101010101010101010101010101010101010
@@ -214,8 +214,6 @@ void ReadTItag(void)
 	}
 }
 
-
-
 void WriteTIbyte(uint8_t b)
 {
 	int i = 0;
@@ -250,7 +248,7 @@ void AcquireTiType(void)
 
 	// clear buffer
 	uint32_t *BigBuf = (uint32_t *)BigBuf_get_addr();
-	memset(BigBuf,0,BigBuf_max_traceLen()/sizeof(uint32_t));
+	BigBuf_Clear_ext(false);
 
 	// Set up the synchronous serial port
 	AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN;
@@ -312,16 +310,11 @@ void AcquireTiType(void)
 	}
 }
 
-
-
-
 // arguments: 64bit data split into 32bit idhi:idlo and optional 16bit crc
 // if crc provided, it will be written with the data verbatim (even if bogus)
 // if not provided a valid crc will be computed from the data and written.
 void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
 {
-
-
 	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
 	if(crc == 0) {
 		crc = update_crc16(crc, (idlo)&0xff);
@@ -386,7 +379,7 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
 	AcquireTiType();
 
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-	DbpString("Now use tiread to check");
+	DbpString("Now use `lf ti read` to check");
 }
 
 void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
@@ -402,14 +395,15 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
 	AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
 	AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
 
- #define SHORT_COIL()	LOW(GPIO_SSC_DOUT)
- #define OPEN_COIL()		HIGH(GPIO_SSC_DOUT)
+ #define SHORT_COIL()   LOW(GPIO_SSC_DOUT)
+ #define OPEN_COIL()    HIGH(GPIO_SSC_DOUT)
 
 	i = 0;
 	for(;;) {
 		//wait until SSC_CLK goes HIGH
 		while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {
 			if(BUTTON_PRESS() || (usb_poll_validate_length() )) {
+				FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 				DbpString("Stopped");
 				return;
 			}
@@ -427,8 +421,9 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
 			LED_D_OFF();
 		//wait until SSC_CLK goes LOW
 		while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {
-			if(BUTTON_PRESS()) {
+			if(BUTTON_PRESS() || (usb_poll_validate_length() )) {
 				DbpString("Stopped");
+				FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 				return;
 			}
 			WDT_HIT();
@@ -443,6 +438,7 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
 				SpinDelayUs(gap);
 			}
 		}
+
 	}
 }
 
@@ -649,6 +645,19 @@ static void biphaseSimBit(uint8_t c, int *n, uint8_t clock, uint8_t *phase)
 		memset(dest+(*n), c ^ *phase, clock);
 		*phase ^= 1;
 	}
+	*n += clock;
+}
+
+static void stAskSimBit(int *n, uint8_t clock) {
+	uint8_t *dest = BigBuf_get_addr();
+	uint8_t halfClk = clock/2;
+	//ST = .5 high .5 low 1.5 high .5 low 1 high	
+	memset(dest+(*n), 1, halfClk);
+	memset(dest+(*n) + halfClk, 0, halfClk);
+	memset(dest+(*n) + clock, 1, clock + halfClk);
+	memset(dest+(*n) + clock*2 + halfClk, 0, halfClk);
+	memset(dest+(*n) + clock*3, 1, clock);
+	*n += clock*4;
 }
 
 // args clock, ask/man or askraw, invert, transmission separator
@@ -666,7 +675,7 @@ void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
 		for (i=0; i<size; i++){
 			biphaseSimBit(BitStream[i]^invert, &n, clk, &phase);
 		}
-		if (BitStream[0]==BitStream[size-1]){ //run a second set inverted to keep phase in check
+		if (phase==1) { //run a second set inverted to keep phase in check
 			for (i=0; i<size; i++){
 				biphaseSimBit(BitStream[i]^invert, &n, clk, &phase);
 			}
@@ -675,14 +684,16 @@ void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
 		for (i=0; i<size; i++){
 			askSimBit(BitStream[i]^invert, &n, clk, encoding);
 		}
-		if (encoding==0 && BitStream[0]==BitStream[size-1]){ //run a second set inverted (for biphase phase)
+		if (encoding==0 && BitStream[0]==BitStream[size-1]){ //run a second set inverted (for ask/raw || biphase phase)
 			for (i=0; i<size; i++){
 				askSimBit(BitStream[i]^invert^1, &n, clk, encoding);
 			}
 		}
 	}
-	
-	if (separator==1) Dbprintf("sorry but separator option not yet available"); 
+	if (separator==1 && encoding == 1)
+		stAskSimBit(&n, clk);
+	else if (separator==1)
+		Dbprintf("sorry but separator option not yet available");
 
 	Dbprintf("Simulating with clk: %d, invert: %d, encoding: %d, separator: %d, n: %d",clk, invert, encoding, separator, n);
 	//DEBUG
@@ -692,14 +703,10 @@ void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
 	//Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
 	//i+=16;
 	//Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
-
-	if (ledcontrol)
-		LED_A_ON();
 	
+	if (ledcontrol) LED_A_ON();
 	SimulateTagLowFrequency(n, 0, ledcontrol);
-
-	if (ledcontrol)
-		LED_A_OFF();
+	if (ledcontrol) LED_A_OFF();
 }
 
 //carrier can be 2,4 or 8
@@ -749,12 +756,9 @@ void CmdPSKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
 	//i+=16;
 	//Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
 		   
-	if (ledcontrol)
-		LED_A_ON();
+	if (ledcontrol) LED_A_ON();
 	SimulateTagLowFrequency(n, 0, ledcontrol);
-
-	if (ledcontrol)
-		LED_A_OFF();
+	if (ledcontrol) LED_A_OFF();
 }
 
 // loop to get raw HID waveform then FSK demodulate the TAG ID from it
@@ -768,6 +772,9 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 	// Configure to go in 125Khz listen mode
 	LFSetupFPGAForADC(95, true);
 
+	//clear read buffer
+	BigBuf_Clear_keep_EM();
+
 	while(!BUTTON_PRESS() && !usb_poll_validate_length()) {
 
 		WDT_HIT();
@@ -836,13 +843,15 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 				if (ledcontrol)	LED_A_OFF();
 				*high = hi;
 				*low = lo;
-				return;
+				break;
 			}
 			// reset
 		}
 		hi2 = hi = lo = idx = 0;
 		WDT_HIT();
 	}
+
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	DbpString("Stopped");
 	if (ledcontrol) LED_A_OFF();
 }
@@ -851,9 +860,10 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {
 	uint8_t *dest = BigBuf_get_addr();
-	//const size_t sizeOfBigBuff = BigBuf_max_traceLen();
 	size_t size; 
 	int idx=0;
+	//clear read buffer
+	BigBuf_Clear_keep_EM();
 	// Configure to go in 125Khz listen mode
 	LFSetupFPGAForADC(95, true);
 
@@ -864,75 +874,75 @@ void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 
 		DoAcquisition_default(-1,true);
 		// FSK demodulator
-		//size = sizeOfBigBuff;  //variable size will change after demod so re initialize it before use
 		size = 50*128*2; //big enough to catch 2 sequences of largest format
 		idx = AWIDdemodFSK(dest, &size);
 		
-		if (idx>0 && size==96){
-	        // Index map
-	        // 0            10            20            30              40            50              60
-	        // |            |             |             |               |             |               |
-	        // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
-	        // -----------------------------------------------------------------------------
-	        // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
-	        // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
-	        //          |---26 bit---|    |-----117----||-------------142-------------|
-	        // b = format bit len, o = odd parity of last 3 bits
-	        // f = facility code, c = card number
-	        // w = wiegand parity
-	        // (26 bit format shown)
-
-	        //get raw ID before removing parities
-	        uint32_t rawLo = bytebits_to_byte(dest+idx+64,32);
-	        uint32_t rawHi = bytebits_to_byte(dest+idx+32,32);
-	        uint32_t rawHi2 = bytebits_to_byte(dest+idx,32);
-
-	        size = removeParity(dest, idx+8, 4, 1, 88);
-	        // ok valid card found!
-
-	        // Index map
-	        // 0           10         20        30          40        50        60
-	        // |           |          |         |           |         |         |
-	        // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
-	        // -----------------------------------------------------------------------------
-	        // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
-	        // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
-	        // |26 bit|   |-117--| |-----142------|
-	        // b = format bit len, o = odd parity of last 3 bits
-	        // f = facility code, c = card number
-	        // w = wiegand parity
-	        // (26 bit format shown)
-
-	        uint32_t fc = 0;
-	        uint32_t cardnum = 0;
-	        uint32_t code1 = 0;
-	        uint32_t code2 = 0;
-	        uint8_t fmtLen = bytebits_to_byte(dest,8);
-	        if (fmtLen==26){
-	                fc = bytebits_to_byte(dest+9, 8);
-	                cardnum = bytebits_to_byte(dest+17, 16);
-	                code1 = bytebits_to_byte(dest+8,fmtLen);
-	                Dbprintf("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(dest+8+(fmtLen-17), 16);
-	                if (fmtLen>32){
-                        code1 = bytebits_to_byte(dest+8,fmtLen-32);
-                        code2 = bytebits_to_byte(dest+8+(fmtLen-32),32);
-                        Dbprintf("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(dest+8,fmtLen);
-                        Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
-                }
-			}
-			if (findone){
-				if (ledcontrol)	LED_A_OFF();
-				return;
+		if (idx<=0 || size!=96) continue;
+		// Index map
+		// 0            10            20            30              40            50              60
+		// |            |             |             |               |             |               |
+		// 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
+		// -----------------------------------------------------------------------------
+		// 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
+		// premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
+		//          |---26 bit---|    |-----117----||-------------142-------------|
+		// b = format bit len, o = odd parity of last 3 bits
+		// f = facility code, c = card number
+		// w = wiegand parity
+		// (26 bit format shown)
+
+		//get raw ID before removing parities
+		uint32_t rawLo = bytebits_to_byte(dest+idx+64,32);
+		uint32_t rawHi = bytebits_to_byte(dest+idx+32,32);
+		uint32_t rawHi2 = bytebits_to_byte(dest+idx,32);
+
+		size = removeParity(dest, idx+8, 4, 1, 88);
+		if (size != 66) continue;
+		// ok valid card found!
+
+		// Index map
+		// 0           10         20        30          40        50        60
+		// |           |          |         |           |         |         |
+		// 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
+		// -----------------------------------------------------------------------------
+		// 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
+		// bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+		// |26 bit|   |-117--| |-----142------|
+		// b = format bit len, o = odd parity of last 3 bits
+		// f = facility code, c = card number
+		// w = wiegand parity
+		// (26 bit format shown)
+
+		uint32_t fc = 0;
+		uint32_t cardnum = 0;
+		uint32_t code1 = 0;
+		uint32_t code2 = 0;
+		uint8_t fmtLen = bytebits_to_byte(dest,8);
+		if (fmtLen==26){
+			fc = bytebits_to_byte(dest+9, 8);
+			cardnum = bytebits_to_byte(dest+17, 16);
+			code1 = bytebits_to_byte(dest+8,fmtLen);
+			Dbprintf("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(dest+8+(fmtLen-17), 16);
+			if (fmtLen>32){
+				code1 = bytebits_to_byte(dest+8,fmtLen-32);
+				code2 = bytebits_to_byte(dest+8+(fmtLen-32),32);
+				Dbprintf("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(dest+8,fmtLen);
+				Dbprintf("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
 			}
-			// reset
 		}
+		if (findone){
+			if (ledcontrol)	LED_A_OFF();
+			break;
+		}
+		// reset
 		idx = 0;
 		WDT_HIT();
 	}
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	DbpString("Stopped");
 	if (ledcontrol) LED_A_OFF();
 }
@@ -945,6 +955,8 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
 	int clk=0, invert=0, errCnt=0, maxErr=20;
 	uint32_t hi=0;
 	uint64_t lo=0;
+	//clear read buffer
+	BigBuf_Clear_keep_EM();
 	// Configure to go in 125Khz listen mode
 	LFSetupFPGAForADC(95, true);
 
@@ -985,13 +997,14 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
 				if (ledcontrol) LED_A_OFF();
 				*high=lo>>32;
 				*low=lo & 0xFFFFFFFF;
-				return;
+				break;
 			}
 		}
 		WDT_HIT();
 		hi = lo = size = idx = 0;
 		clk = invert = errCnt = 0;
 	}
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	DbpString("Stopped");
 	if (ledcontrol) LED_A_OFF();
 }
@@ -1004,6 +1017,8 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 	uint8_t version=0;
 	uint8_t facilitycode=0;
 	uint16_t number=0;
+	//clear read buffer
+	BigBuf_Clear_keep_EM();
 	// Configure to go in 125Khz listen mode
 	LFSetupFPGAForADC(95, true);
 
@@ -1048,7 +1063,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 			//LED_A_OFF();
 			*high=code;
 			*low=code2;
-			return;
+			break;
 		}
 		code=code2=0;
 		version=facilitycode=0;
@@ -1057,6 +1072,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 
 		WDT_HIT();
 	}
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	DbpString("Stopped");
 	if (ledcontrol) LED_A_OFF();
 }
@@ -1064,11 +1080,8 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 /*------------------------------
  * T5555/T5557/T5567/T5577 routines
  *------------------------------
- */
-
-/* NOTE: T55x7/T5555 configuration register definitions moved to protocols.h */
-
-/*
+ * NOTE: T55x7/T5555 configuration register definitions moved to protocols.h
+ *
  * Relevant communication times in microsecond
  * To compensate antenna falling times shorten the write times
  * and enlarge the gap ones.
@@ -1078,21 +1091,7 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 #define WRITE_GAP 20*8 // was 160 // SPEC:  1*8 to 20*8 - typ 10*8 (or 10fc)
 #define WRITE_0   18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (or 24fc)
 #define WRITE_1   50*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (or 56fc)  432 for T55x7; 448 for E5550
-#define READ_GAP  52*8 
-
-//  VALUES TAKEN FROM EM4x function: SendForward
-//  START_GAP = 440;       (55*8) cycles at 125Khz (8us = 1cycle)
-//  WRITE_GAP = 128;       (16*8)
-//  WRITE_1   = 256 32*8;  (32*8) 
-
-//  These timings work for 4469/4269/4305 (with the 55*8 above)
-//  WRITE_0 = 23*8 , 9*8  SpinDelayUs(23*8); 
-
-// Sam7s has several timers, we will use the source TIMER_CLOCK1 (aka AT91C_TC_CLKS_TIMER_DIV1_CLOCK)
-// TIMER_CLOCK1 = MCK/2, MCK is running at 48 MHz, Timer is running at 48/2 = 24 MHz
-// Hitag units (T0) have duration of 8 microseconds (us), which is 1/125000 per second (carrier)
-// T0 = TIMER_CLOCK1 / 125000 = 192
-// 1 Cycle = 8 microseconds(us)  == 1 field clock
+#define READ_GAP  15*8 
 
 void TurnReadLFOn(int delay) {
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
@@ -1110,8 +1109,37 @@ void T55xxWriteBit(int bit) {
 	SpinDelayUs(WRITE_GAP);
 }
 
+// Send T5577 reset command then read stream (see if we can identify the start of the stream)
+void T55xxResetRead(void) {
+	LED_A_ON();
+	//clear buffer now so it does not interfere with timing later
+	BigBuf_Clear_keep_EM();
+
+	// Set up FPGA, 125kHz
+	LFSetupFPGAForADC(95, true);
+
+	// Trigger T55x7 in mode.
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+	SpinDelayUs(START_GAP);
+
+	// reset tag - op code 00
+	T55xxWriteBit(0);
+	T55xxWriteBit(0);
+
+	// Turn field on to read the response
+	TurnReadLFOn(READ_GAP);
+
+	// Acquisition
+	doT55x7Acquisition(BigBuf_max_traceLen());
+
+	// Turn the field off
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+	cmd_send(CMD_ACK,0,0,0,0,0);    
+	LED_A_OFF();
+}
+
 // Write one card block in page 0, no lock
-void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {
+void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {
 	LED_A_ON();
 	bool PwdMode = arg & 0x1;
 	uint8_t Page = (arg & 0x2)>>1;
@@ -1153,11 +1181,16 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {
 
 	// turn field off
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-	cmd_send(CMD_ACK,0,0,0,0,0);
 	LED_A_OFF();
 }
 
-// Read one card block in page 0
+// Write one card block in page 0, no lock
+void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {
+	T55xxWriteBlockExt(Data, Block, Pwd, arg);
+	cmd_send(CMD_ACK,0,0,0,0,0);
+}
+
+// Read one card block in page [page]
 void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
 	LED_A_ON();
 	bool PwdMode = arg0 & 0x1;
@@ -1199,7 +1232,7 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
 	TurnReadLFOn(READ_GAP);
 
 	// Acquisition
-	doT55x7Acquisition();
+	doT55x7Acquisition(12000);
 
 	// Turn the field off
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
@@ -1234,14 +1267,14 @@ void T55xxWakeUp(uint32_t Pwd){
 
 void WriteT55xx(uint32_t *blockdata, uint8_t startblock, uint8_t numblocks) {
 	// write last block first and config block last (if included)
-	for (uint8_t i = numblocks; i > startblock; i--)
-		T55xxWriteBlock(blockdata[i-1],i-1,0,0);
+	for (uint8_t i = numblocks+startblock; i > startblock; i--) {
+		T55xxWriteBlockExt(blockdata[i-1],i-1,0,0);
+	}
 }
 
 // Copy HID id to card and setup block 0 config
 void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
 	uint32_t data[] = {0,0,0,0,0,0,0};
-	//int data1=0, data2=0, data3=0, data4=0, data5=0, data6=0; //up to six blocks for long format
 	uint8_t last_block = 0;
 
 	if (longFMT) {
@@ -1253,7 +1286,7 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
 		// Build the 6 data blocks for supplied 84bit ID
 		last_block = 6;
 		// load preamble (1D) & long format identifier (9E manchester encoded)
-		data[1] = 0x1D96A900 | manchesterEncode2Bytes((hi2 >> 16) & 0xF);
+		data[1] = 0x1D96A900 | (manchesterEncode2Bytes((hi2 >> 16) & 0xF) & 0xFF);
 		// load raw id from hi2, hi, lo to data blocks (manchester encoded)
 		data[2] = manchesterEncode2Bytes(hi2 & 0xFFFF);
 		data[3] = manchesterEncode2Bytes(hi >> 16);
@@ -1269,13 +1302,16 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
 		// Build the 3 data blocks for supplied 44bit ID
 		last_block = 3;
 		// load preamble
-		data[1] = 0x1D000000 | manchesterEncode2Bytes(hi & 0xFFF);
+		data[1] = 0x1D000000 | (manchesterEncode2Bytes(hi) & 0xFFFFFF);
 		data[2] = manchesterEncode2Bytes(lo >> 16);
 		data[3] = manchesterEncode2Bytes(lo & 0xFFFF);
 	}
 	// load chip config block
 	data[0] = T55x7_BITRATE_RF_50 | T55x7_MODULATION_FSK2a | last_block << T55x7_MAXBLOCK_SHIFT;
 
+	//TODO add selection of chip for Q5 or T55x7
+	// data[0] = (((50-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | last_block << T5555_MAXBLOCK_SHIFT;
+
 	LED_D_ON();
 	// Program the data blocks for supplied ID
 	// and the block 0 for HID format
@@ -1286,9 +1322,10 @@ void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
 	DbpString("DONE!");
 }
 
-void CopyIOtoT55x7(uint32_t hi, uint32_t lo, uint8_t longFMT)
-{
+void CopyIOtoT55x7(uint32_t hi, uint32_t lo) {
 	uint32_t data[] = {T55x7_BITRATE_RF_64 | T55x7_MODULATION_FSK2a | (2 << T55x7_MAXBLOCK_SHIFT), hi, lo};
+	//TODO add selection of chip for Q5 or T55x7
+	// data[0] = (((64-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 2 << T5555_MAXBLOCK_SHIFT;
 
 	LED_D_ON();
 	// Program the data blocks for supplied ID
@@ -1305,31 +1342,43 @@ void CopyIndala64toT55x7(uint32_t hi, uint32_t lo) {
 	//Program the 2 data blocks for supplied 64bit UID
 	// and the Config for Indala 64 format (RF/32;PSK1 with RF/2;Maxblock=2)
 	uint32_t data[] = { T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (2 << T55x7_MAXBLOCK_SHIFT), hi, lo};
+	//TODO add selection of chip for Q5 or T55x7
+	// data[0] = (((32-2)/2)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_PSK1 | 2 << T5555_MAXBLOCK_SHIFT;
+
 	WriteT55xx(data, 0, 3);
 	//Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data)
 	//	T5567WriteBlock(0x603E1042,0);
 	DbpString("DONE!");
 }
 // Clone Indala 224-bit tag by UID to T55x7
-void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t uid4, uint32_t uid5, uint32_t uid6, uint32_t uid7)
-{
+void CopyIndala224toT55x7(uint32_t uid1, uint32_t uid2, uint32_t uid3, uint32_t uid4, uint32_t uid5, uint32_t uid6, uint32_t uid7) {
 	//Program the 7 data blocks for supplied 224bit UID
 	uint32_t data[] = {0, uid1, uid2, uid3, uid4, uid5, uid6, uid7};
 	// and the block 0 for Indala224 format	
 	//Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7)
 	data[0] = T55x7_BITRATE_RF_32 | T55x7_MODULATION_PSK1 | (7 << T55x7_MAXBLOCK_SHIFT);
+	//TODO add selection of chip for Q5 or T55x7
+	// data[0] = (((32-2)>>1)<<T5555_BITRATE_SHIFT) | T5555_MODULATION_PSK1 | 7 << T5555_MAXBLOCK_SHIFT;
 	WriteT55xx(data, 0, 8);
 	//Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data)
 	//	T5567WriteBlock(0x603E10E2,0);
 	DbpString("DONE!");
 }
+// clone viking tag to T55xx
+void CopyVikingtoT55xx(uint32_t block1, uint32_t block2, uint8_t Q5) {
+	uint32_t data[] = {T55x7_BITRATE_RF_32 | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT), block1, block2};
+	if (Q5) data[0] = ( ((32-2)>>1) << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | 2 << T5555_MAXBLOCK_SHIFT;
+	// Program the data blocks for supplied ID and the block 0 config
+	WriteT55xx(data, 0, 3);
+	LED_D_OFF();
+	cmd_send(CMD_ACK,0,0,0,0,0);
+}
 
 // Define 9bit header for EM410x tags
 #define EM410X_HEADER		  0x1FF
 #define EM410X_ID_LENGTH	40
 
-void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo)
-{
+void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo) {
 	int i, id_bit;
 	uint64_t id = EM410X_HEADER;
 	uint64_t rev_id = 0;	// reversed ID
@@ -1389,20 +1438,21 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo)
 	LED_D_ON();
 
 	// Write EM410x ID
-	uint32_t data[] = {0, id>>32, id & 0xFFFF};
-	if (card) {
-		clock = (card & 0xFF00) >> 8;
-		clock = (clock == 0) ? 64 : clock;
-		Dbprintf("Clock rate: %d", clock);
-		clock = GetT55xxClockBit(clock);
+	uint32_t data[] = {0, (uint32_t)(id>>32), (uint32_t)(id & 0xFFFFFFFF)};
+
+	clock = (card & 0xFF00) >> 8;
+	clock = (clock == 0) ? 64 : clock;
+	Dbprintf("Clock rate: %d", clock);
+	if (card & 0xFF) { //t55x7
+		clock = GetT55xxClockBit(clock);			
 		if (clock == 0) {
 			Dbprintf("Invalid clock rate: %d", clock);
 			return;
 		}
-
 		data[0] = clock | T55x7_MODULATION_MANCHESTER | (2 << T55x7_MAXBLOCK_SHIFT);
-	} else {
-		data[0] = (0x1F << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT);
+	} else { //t5555 (Q5)
+		clock = (clock-2)>>1;  //n = (RF-2)/2
+		data[0] = (clock << T5555_BITRATE_SHIFT) | T5555_MODULATION_MANCHESTER | (2 << T5555_MAXBLOCK_SHIFT);
 	}
 
 	WriteT55xx(data, 0, 3);
@@ -1420,7 +1470,6 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo)
 #define FWD_CMD_READ 0x9
 #define FWD_CMD_DISABLE 0x5
 
-
 uint8_t forwardLink_data[64]; //array of forwarded bits
 uint8_t * forward_ptr; //ptr for forward message preparation
 uint8_t fwd_bit_sz; //forwardlink bit counter
@@ -1431,8 +1480,15 @@ uint8_t * fwd_write_ptr; //forwardlink bit pointer
 // see EM4469 spec
 //====================================================================
 //--------------------------------------------------------------------
+//  VALUES TAKEN FROM EM4x function: SendForward
+//  START_GAP = 440;       (55*8) cycles at 125Khz (8us = 1cycle)
+//  WRITE_GAP = 128;       (16*8)
+//  WRITE_1   = 256 32*8;  (32*8) 
+
+//  These timings work for 4469/4269/4305 (with the 55*8 above)
+//  WRITE_0 = 23*8 , 9*8  SpinDelayUs(23*8); 
+
 uint8_t Prepare_Cmd( uint8_t cmd ) {
-	//--------------------------------------------------------------------
 
 	*forward_ptr++ = 0; //start bit
 	*forward_ptr++ = 0; //second pause for 4050 code
@@ -1452,10 +1508,7 @@ uint8_t Prepare_Cmd( uint8_t cmd ) {
 // prepares address bits
 // see EM4469 spec
 //====================================================================
-
-//--------------------------------------------------------------------
 uint8_t Prepare_Addr( uint8_t addr ) {
-	//--------------------------------------------------------------------
 
 	register uint8_t line_parity;
 
@@ -1476,10 +1529,7 @@ uint8_t Prepare_Addr( uint8_t addr ) {
 // prepares data bits intreleaved with parity bits
 // see EM4469 spec
 //====================================================================
-
-//--------------------------------------------------------------------
 uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) {
-	//--------------------------------------------------------------------
 
 	register uint8_t line_parity;
 	register uint8_t column_parity;
@@ -1521,31 +1571,27 @@ void SendForward(uint8_t fwd_bit_count) {
 	fwd_write_ptr = forwardLink_data;
 	fwd_bit_sz = fwd_bit_count;
 
-	LED_D_ON();
-
-	// Set up FPGA, 125kHz
+	// Set up FPGA, 125kHz or 95 divisor
 	LFSetupFPGAForADC(95, true);
 
 	// force 1st mod pulse (start gap must be longer for 4305)
 	fwd_bit_sz--; //prepare next bit modulation
 	fwd_write_ptr++;
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-	SpinDelayUs(55*8); //55 cycles off (8us each)for 4305
-	FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+	WaitUS(55*8); //55 cycles off (8us each)for 4305  //another reader has 37 here...
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
-	SpinDelayUs(16*8); //16 cycles on (8us each)
+	WaitUS(18*8); //18 cycles on (8us each)
 
 	// now start writting
 	while(fwd_bit_sz-- > 0) { //prepare next bit modulation
 		if(((*fwd_write_ptr++) & 1) == 1)
-			SpinDelayUs(32*8); //32 cycles at 125Khz (8us each)
+			WaitUS(32*8); //32 cycles at 125Khz (8us each)
 		else {
 			//These timings work for 4469/4269/4305 (with the 55*8 above)
 			FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-			SpinDelayUs(23*8); //16-4 cycles off (8us each)
-			FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+			WaitUS(23*8); //23 cycles off (8us each)
 			FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
-			SpinDelayUs(9*8); //16 cycles on (8us each)
+			WaitUS(18*8); //18 cycles on (8us each)
 		}
 	}
 }
@@ -1562,19 +1608,17 @@ void EM4xLogin(uint32_t Password) {
 
 	//Wait for command to complete
 	SpinDelay(20);
-
 }
 
 void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 
 	uint8_t fwd_bit_count;
-	uint8_t *dest = BigBuf_get_addr();
-	uint16_t bufferlength = BigBuf_max_traceLen();
-	uint32_t i = 0;
 
 	// Clear destination buffer before sending the command
-	memset(dest, 0x80, bufferlength);
+	BigBuf_Clear_ext(false);
 
+	LED_A_ON();
+	StartTicks();
 	//If password mode do login
 	if (PwdMode == 1) EM4xLogin(Pwd);
 
@@ -1582,36 +1626,29 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 	fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );
 	fwd_bit_count += Prepare_Addr( Address );
 
-	// Connect the A/D to the peak-detected low-frequency path.
-	SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
-	// Now set up the SSC to get the ADC samples that are now streaming at us.
-	FpgaSetupSsc();
-
 	SendForward(fwd_bit_count);
-
+	WaitUS(400);
 	// Now do the acquisition
-	i = 0;
-	for(;;) {
-		if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
-			AT91C_BASE_SSC->SSC_THR = 0x43;
-		}
-		if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {
-			dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
-			i++;
-			if (i >= bufferlength) break;
-		}
-	}
+	DoPartialAcquisition(20, true, 6000);
+	
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+	LED_A_OFF();
 	cmd_send(CMD_ACK,0,0,0,0,0);
-	LED_D_OFF();
 }
 
-void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
-
+void EM4xWriteWord(uint32_t flag, uint32_t Data, uint32_t Pwd) {
+	
+	bool PwdMode = (flag & 0xF);
+	uint8_t Address = (flag >> 8) & 0xFF;
 	uint8_t fwd_bit_count;
 
+	//clear buffer now so it does not interfere with timing later
+	BigBuf_Clear_ext(false);
+
+	LED_A_ON();
+	StartTicks();
 	//If password mode do login
-	if (PwdMode == 1) EM4xLogin(Pwd);
+	if (PwdMode) EM4xLogin(Pwd);
 
 	forward_ptr = forwardLink_data;
 	fwd_bit_count = Prepare_Cmd( FWD_CMD_WRITE );
@@ -1621,7 +1658,72 @@ void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode
 	SendForward(fwd_bit_count);
 
 	//Wait for write to complete
-	SpinDelay(20);
+	//SpinDelay(10);
+
+	WaitUS(6500);
+	//Capture response if one exists
+	DoPartialAcquisition(20, true, 6000);
+
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-	LED_D_OFF();
+	LED_A_OFF();
+	cmd_send(CMD_ACK,0,0,0,0,0);
+}
+/*
+Reading a COTAG.
+
+COTAG needs the reader to send a startsequence and the card has an extreme slow datarate.
+because of this, we can "sample" the data signal but we interpreate it to Manchester direct.
+
+READER START SEQUENCE:
+burst 800 us,    gap   2.2 msecs
+burst 3.6 msecs  gap   2.2 msecs
+burst 800 us     gap   2.2 msecs
+pulse 3.6 msecs
+
+This triggers a COTAG tag to response
+*/
+void Cotag(uint32_t arg0) {
+
+#define OFF     { FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); WaitUS(2035); }
+#define ON(x)   { FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); WaitUS((x)); }
+
+	uint8_t rawsignal = arg0 & 0xF;
+
+	LED_A_ON();
+
+	// Switching to LF image on FPGA. This might empty BigBuff
+	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
+	//clear buffer now so it does not interfere with timing later
+	BigBuf_Clear_ext(false);
+
+	// Set up FPGA, 132kHz to power up the tag
+	FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 89);
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+
+	// Connect the A/D to the peak-detected low-frequency path.
+	SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
+
+	// Now set up the SSC to get the ADC samples that are now streaming at us.
+	FpgaSetupSsc();
+
+	// start clock - 1.5ticks is 1us
+	StartTicks();
+
+	//send COTAG start pulse
+	ON(740)  OFF
+	ON(3330) OFF
+	ON(740)  OFF
+	ON(1000)
+
+	switch(rawsignal) {
+		case 0: doCotagAcquisition(50000); break;
+		case 1: doCotagAcquisitionManchester(); break;
+		case 2: DoAcquisition_config(TRUE); break;
+	}
+
+	// Turn the field off
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+	cmd_send(CMD_ACK,0,0,0,0,0);
+	LED_A_OFF();
 }