Merge pull request #165 from wllm-rbnt/master

[proxmark3-svn] / armsrc / lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 5250c1e0ee8765644ec76be12ba815dc8f4c57de..47fec7c2a95d3b6737361b401e56fb0e2297847e 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -16,7 +16,8 @@
 #include "string.h"
 #include "lfdemod.h"
 #include "lfsampling.h"
 #include "string.h"
 #include "lfdemod.h"
 #include "lfsampling.h"

-#include "usb_cdc.h" //test
+#include "protocols.h"
+#include "usb_cdc.h" // for usb_poll_validate_length

 
 /**
  * Function to do a modulation and then get samples.
 
 /**
  * Function to do a modulation and then get samples.


@@ -72,8 +73,6 @@ void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t period_0, uint
        DoAcquisition_config(false);
 }
 
        DoAcquisition_config(false);
 }
 

-
-

 /* blank r/w tag data stream
 ...0000000000000000 01111111
 1010101010101010101010101010101010101010101010101010101010101010
 /* blank r/w tag data stream
 ...0000000000000000 01111111
 1010101010101010101010101010101010101010101010101010101010101010


@@ -213,8 +212,6 @@ void ReadTItag(void)
        }
 }
 
        }
 }
 

-
-

 void WriteTIbyte(uint8_t b)
 {
        int i = 0;
 void WriteTIbyte(uint8_t b)
 {
        int i = 0;


@@ -249,7 +246,7 @@ void AcquireTiType(void)
 
        // clear buffer
        uint32_t *BigBuf = (uint32_t *)BigBuf_get_addr();
 
        // 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;
 
        // Set up the synchronous serial port
        AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN;


@@ -311,16 +308,11 @@ 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)
 {
 // 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);
        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        if(crc == 0) {
                crc = update_crc16(crc, (idlo)&0xff);


@@ -401,8 +393,8 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
        AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
        AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
 
        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(;;) {
 
        i = 0;
        for(;;) {


@@ -648,7 +640,6 @@ static void biphaseSimBit(uint8_t c, int *n, uint8_t clock, uint8_t *phase)
                memset(dest+(*n), c ^ *phase, clock);
                *phase ^= 1;
        }
                memset(dest+(*n), c ^ *phase, clock);
                *phase ^= 1;
        }

-

 }
 
 // args clock, ask/man or askraw, invert, transmission separator
 }
 
 // args clock, ask/man or askraw, invert, transmission separator


@@ -693,13 +684,9 @@ void CmdASKsimTag(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]);
 
        //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);
        SimulateTagLowFrequency(n, 0, ledcontrol);

-
-       if (ledcontrol)
-               LED_A_OFF();
+       if (ledcontrol) LED_A_OFF();

 }
 
 //carrier can be 2,4 or 8
 }
 
 //carrier can be 2,4 or 8


@@ -749,12 +736,9 @@ 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]);
                   
        //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);
        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
 }
 
 // loop to get raw HID waveform then FSK demodulate the TAG ID from it


@@ -851,7 +835,6 @@ 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();
 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;
        // Configure to go in 125Khz listen mode
        size_t size; 
        int idx=0;
        // Configure to go in 125Khz listen mode


@@ -864,72 +847,71 @@ void CmdAWIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 
                DoAcquisition_default(-1,true);
                // FSK demodulator
 
                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);
                
                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();
+                       return;
+               }
+               // reset

                idx = 0;
                WDT_HIT();
        }
                idx = 0;
                WDT_HIT();
        }


@@ -1062,62 +1044,11 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 }
 
 /*------------------------------
 }
 
 /*------------------------------

- * T5555/T5557/T5567 routines
+ * T5555/T5557/T5567/T5577 routines

  *------------------------------
  *------------------------------

- */
-
-/* T55x7 configuration register definitions */
-#define T55x7_POR_DELAY                        0x00000001
-#define T55x7_ST_TERMINATOR            0x00000008
-#define T55x7_PWD                      0x00000010
-#define T55x7_MAXBLOCK_SHIFT           5
-#define T55x7_AOR                      0x00000200
-#define T55x7_PSKCF_RF_2               0
-#define T55x7_PSKCF_RF_4               0x00000400
-#define T55x7_PSKCF_RF_8               0x00000800
-#define T55x7_MODULATION_DIRECT                0
-#define T55x7_MODULATION_PSK1          0x00001000
-#define T55x7_MODULATION_PSK2          0x00002000
-#define T55x7_MODULATION_PSK3          0x00003000
-#define T55x7_MODULATION_FSK1          0x00004000
-#define T55x7_MODULATION_FSK2          0x00005000
-#define T55x7_MODULATION_FSK1a         0x00006000
-#define T55x7_MODULATION_FSK2a         0x00007000
-#define T55x7_MODULATION_MANCHESTER    0x00008000
-#define T55x7_MODULATION_BIPHASE       0x00010000
-#define T55x7_MODULATION_DIPHASE       0x00018000
-#define T55x7_BITRATE_RF_8             0
-#define T55x7_BITRATE_RF_16            0x00040000
-#define T55x7_BITRATE_RF_32            0x00080000
-#define T55x7_BITRATE_RF_40            0x000C0000
-#define T55x7_BITRATE_RF_50            0x00100000
-#define T55x7_BITRATE_RF_64            0x00140000
-#define T55x7_BITRATE_RF_100           0x00180000
-#define T55x7_BITRATE_RF_128           0x001C0000
-
-/* T5555 (Q5) configuration register definitions */
-#define T5555_ST_TERMINATOR            0x00000001
-#define T5555_MAXBLOCK_SHIFT           0x00000001
-#define T5555_MODULATION_MANCHESTER    0
-#define T5555_MODULATION_PSK1          0x00000010
-#define T5555_MODULATION_PSK2          0x00000020
-#define T5555_MODULATION_PSK3          0x00000030
-#define T5555_MODULATION_FSK1          0x00000040
-#define T5555_MODULATION_FSK2          0x00000050
-#define T5555_MODULATION_BIPHASE       0x00000060
-#define T5555_MODULATION_DIRECT                0x00000070
-#define T5555_INVERT_OUTPUT            0x00000080
-#define T5555_PSK_RF_2                 0
-#define T5555_PSK_RF_4                 0x00000100
-#define T5555_PSK_RF_8                 0x00000200
-#define T5555_USE_PWD                  0x00000400
-#define T5555_USE_AOR                  0x00000800
-#define T5555_BITRATE_SHIFT            12
-#define T5555_FAST_WRITE               0x00004000
-#define T5555_PAGE_SELECT              0x00008000
-
-/*
- * Relevant times in microsecond
+ * 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.
  * Q5 tags seems to have issues when these values changes. 
  * To compensate antenna falling times shorten the write times
  * and enlarge the gap ones.
  * Q5 tags seems to have issues when these values changes. 


@@ -1126,21 +1057,7 @@ 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 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);
 
 void TurnReadLFOn(int delay) {
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);


@@ -1150,17 +1067,45 @@ void TurnReadLFOn(int delay) {
 
 // Write one bit to card
 void T55xxWriteBit(int bit) {
 
 // Write one bit to card
 void T55xxWriteBit(int bit) {

-       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

        if (!bit)
        if (!bit)

-               SpinDelayUs(WRITE_0);
+               TurnReadLFOn(WRITE_0);

        else
        else

-               SpinDelayUs(WRITE_1);
+               TurnReadLFOn(WRITE_1);

        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelayUs(WRITE_GAP);
 }
 
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        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_ext(false);
+
+       // 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
 // 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;
        LED_A_ON();
        bool PwdMode = arg & 0x1;
        uint8_t Page = (arg & 0x2)>>1;


@@ -1202,11 +1147,16 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) {
 
        // turn field off
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 
        // turn field off
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

-       cmd_send(CMD_ACK,0,0,0,0,0);

        LED_A_OFF();
 }
 
        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;
 void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
        LED_A_ON();
        bool PwdMode = arg0 & 0x1;


@@ -1227,7 +1177,7 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelayUs(START_GAP);
 
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelayUs(START_GAP);
 

-       // Opcode 10
+       // Opcode 1[page]

        T55xxWriteBit(1);
        T55xxWriteBit(Page); //Page 0
 
        T55xxWriteBit(1);
        T55xxWriteBit(Page); //Page 0
 


@@ -1248,7 +1198,7 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
        TurnReadLFOn(READ_GAP);
 
        // Acquisition
        TurnReadLFOn(READ_GAP);
 
        // Acquisition

-       doT55x7Acquisition();
+       doT55x7Acquisition(12000);

 
        // Turn the field off
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
 
        // Turn the field off
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off


@@ -1256,37 +1206,6 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
        LED_A_OFF();
 }
 
        LED_A_OFF();
 }
 

-/*
-// Read card traceability data (page 1)
-void T55xxReadTrace(void){
-       LED_A_ON();
-
-       //clear buffer now so it does not interfere with timing later
-       BigBuf_Clear_ext(false);
-
-       // Set up FPGA, 125kHz
-       LFSetupFPGAForADC(95, true);
-
-  // Trigger T55x7 Direct Access Mode
-       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-       SpinDelayUs(START_GAP);
-
-       // Opcode 11
-       T55xxWriteBit(1);
-       T55xxWriteBit(1); //Page 1
-
-       // Turn field on to read the response
-       TurnReadLFOn(READ_GAP);
-
-       // Acquisition
-       doT55x7Acquisition();
-
-       // Turn the field off
-       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-       cmd_send(CMD_ACK,0,0,0,0,0);
-       LED_A_OFF();
-}
-*/

 void T55xxWakeUp(uint32_t Pwd){
        LED_B_ON();
        uint32_t i = 0;
 void T55xxWakeUp(uint32_t Pwd){
        LED_B_ON();
        uint32_t i = 0;


@@ -1311,13 +1230,20 @@ void T55xxWakeUp(uint32_t Pwd){
 }
 
 /*-------------- Cloning routines -----------*/
 }
 
 /*-------------- Cloning routines -----------*/

+
+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+startblock; i > startblock; i--) {
+               T55xxWriteBlockExt(blockdata[i-1],i-1,0,0);
+       }
+}
+

 // Copy HID id to card and setup block 0 config
 // Copy HID id to card and setup block 0 config

-void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT)
-{
-       int data1=0, data2=0, data3=0, data4=0, data5=0, data6=0; //up to six blocks for long format
-       int last_block = 0;
+void CopyHIDtoT55x7(uint32_t hi2, uint32_t hi, uint32_t lo, uint8_t longFMT) {
+       uint32_t data[] = {0,0,0,0,0,0,0};
+       uint8_t last_block = 0;

 
 

-       if (longFMT){
+       if (longFMT) {

                // Ensure no more than 84 bits supplied
                if (hi2>0xFFFFF) {
                        DbpString("Tags can only have 84 bits.");
                // Ensure no more than 84 bits supplied
                if (hi2>0xFFFFF) {
                        DbpString("Tags can only have 84 bits.");


@@ -1325,140 +1251,100 @@ 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;
                }
                // Build the 6 data blocks for supplied 84bit ID
                last_block = 6;

-               data1 = 0x1D96A900; // load preamble (1D) & long format identifier (9E manchester encoded)
-               for (int i=0;i<4;i++) {
-                       if (hi2 & (1<<(19-i)))
-                               data1 |= (1<<(((3-i)*2)+1)); // 1 -> 10
-                       else
-                               data1 |= (1<<((3-i)*2)); // 0 -> 01
-               }
-
-               data2 = 0;
-               for (int i=0;i<16;i++) {
-                       if (hi2 & (1<<(15-i)))
-                               data2 |= (1<<(((15-i)*2)+1)); // 1 -> 10
-                       else
-                               data2 |= (1<<((15-i)*2)); // 0 -> 01
-               }
-
-               data3 = 0;
-               for (int i=0;i<16;i++) {
-                       if (hi & (1<<(31-i)))
-                               data3 |= (1<<(((15-i)*2)+1)); // 1 -> 10
-                       else
-                               data3 |= (1<<((15-i)*2)); // 0 -> 01
-               }
-
-               data4 = 0;
-               for (int i=0;i<16;i++) {
-                       if (hi & (1<<(15-i)))
-                               data4 |= (1<<(((15-i)*2)+1)); // 1 -> 10
-                       else
-                               data4 |= (1<<((15-i)*2)); // 0 -> 01
-               }
-
-               data5 = 0;
-               for (int i=0;i<16;i++) {
-                       if (lo & (1<<(31-i)))
-                               data5 |= (1<<(((15-i)*2)+1)); // 1 -> 10
-                       else
-                               data5 |= (1<<((15-i)*2)); // 0 -> 01
-               }
-
-               data6 = 0;
-               for (int i=0;i<16;i++) {
-                       if (lo & (1<<(15-i)))
-                               data6 |= (1<<(((15-i)*2)+1)); // 1 -> 10
-                       else
-                               data6 |= (1<<((15-i)*2)); // 0 -> 01
-               }
-       }
-       else {
+               // load preamble (1D) & long format identifier (9E manchester encoded)
+               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);
+               data[4] = manchesterEncode2Bytes(hi & 0xFFFF);
+               data[5] = manchesterEncode2Bytes(lo >> 16);
+               data[6] = manchesterEncode2Bytes(lo & 0xFFFF);
+       }       else {

                // Ensure no more than 44 bits supplied
                if (hi>0xFFF) {
                        DbpString("Tags can only have 44 bits.");
                        return;
                }
                // Ensure no more than 44 bits supplied
                if (hi>0xFFF) {
                        DbpString("Tags can only have 44 bits.");
                        return;
                }

-

                // Build the 3 data blocks for supplied 44bit ID
                last_block = 3;
                // Build the 3 data blocks for supplied 44bit ID
                last_block = 3;

-
-               data1 = 0x1D000000; // load preamble
-
-               for (int i=0;i<12;i++) {
-                       if (hi & (1<<(11-i)))
-                               data1 |= (1<<(((11-i)*2)+1)); // 1 -> 10
-                       else
-                               data1 |= (1<<((11-i)*2)); // 0 -> 01
-               }
-
-               data2 = 0;
-               for (int i=0;i<16;i++) {
-                       if (lo & (1<<(31-i)))
-                               data2 |= (1<<(((15-i)*2)+1)); // 1 -> 10
-                       else
-                               data2 |= (1<<((15-i)*2)); // 0 -> 01
-               }
-
-               data3 = 0;
-               for (int i=0;i<16;i++) {
-                       if (lo & (1<<(15-i)))
-                               data3 |= (1<<(((15-i)*2)+1)); // 1 -> 10
-                       else
-                               data3 |= (1<<((15-i)*2)); // 0 -> 01
-               }
+               // load preamble
+               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
 
        LED_D_ON();
        // Program the data blocks for supplied ID
        // and the block 0 for HID format

-       T55xxWriteBlock(data1,1,0,0);
-       T55xxWriteBlock(data2,2,0,0);
-       T55xxWriteBlock(data3,3,0,0);
-
-       if (longFMT) { // if long format there are 6 blocks
-               T55xxWriteBlock(data4,4,0,0);
-               T55xxWriteBlock(data5,5,0,0);
-               T55xxWriteBlock(data6,6,0,0);
-       }
-
-       // Config for HID (RF/50, FSK2a, Maxblock=3 for short/6 for long)
-       T55xxWriteBlock(T55x7_BITRATE_RF_50    |
-                                       T55x7_MODULATION_FSK2a |
-                                       last_block << T55x7_MAXBLOCK_SHIFT,
-                                       0,0,0);
+       WriteT55xx(data, 0, last_block+1);

 
        LED_D_OFF();
 
        DbpString("DONE!");
 }
 
 
        LED_D_OFF();
 
        DbpString("DONE!");
 }
 

-void CopyIOtoT55x7(uint32_t hi, uint32_t lo, uint8_t longFMT)
-{
-       int data1=0, data2=0; //up to six blocks for long format
-
-       data1 = hi;  // load preamble
-       data2 = lo;
+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
 
        LED_D_ON();
        // Program the data blocks for supplied ID

-       // and the block 0 for HID format
-       T55xxWriteBlock(data1,1,0,0);
-       T55xxWriteBlock(data2,2,0,0);
+       // and the block 0 config
+       WriteT55xx(data, 0, 3);

 
 

-       //Config Block
-       T55xxWriteBlock(0x00147040,0,0,0);

        LED_D_OFF();
 
        DbpString("DONE!");
 }
 
        LED_D_OFF();
 
        DbpString("DONE!");
 }
 

+// Clone Indala 64-bit tag by UID to T55x7
+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) {
+       //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)/2)<<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 << 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 9bit header for EM410x tags

-#define EM410X_HEADER          0x1FF
+#define EM410X_HEADER            0x1FF

 #define EM410X_ID_LENGTH       40
 
 #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
        int i, id_bit;
        uint64_t id = EM410X_HEADER;
        uint64_t rev_id = 0;    // reversed ID


@@ -1518,98 +1404,30 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo)
        LED_D_ON();
 
        // Write EM410x ID
        LED_D_ON();
 
        // Write EM410x ID

-       T55xxWriteBlock((uint32_t)(id >> 32), 1, 0, 0);
-       T55xxWriteBlock((uint32_t)id, 2, 0, 0);
-
-       // Config for EM410x (RF/64, Manchester, Maxblock=2)
-       if (card) {
-               // Clock rate is stored in bits 8-15 of the card value
-               clock = (card & 0xFF00) >> 8;
-               Dbprintf("Clock rate: %d", clock);
-               switch (clock) {
-               case 50:
-                       clock = T55x7_BITRATE_RF_50;
-               case 40:
-                       clock = T55x7_BITRATE_RF_40;
-               case 32:
-                       clock = T55x7_BITRATE_RF_32;
-                       break;
-               case 16:
-                       clock = T55x7_BITRATE_RF_16;
-                       break;
-               case 0:
-                       // A value of 0 is assumed to be 64 for backwards-compatibility
-                       // Fall through...
-               case 64:
-                       clock = T55x7_BITRATE_RF_64;
-                       break;
-               default:
+       uint32_t data[] = {0, id>>32, 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;
                }
                        Dbprintf("Invalid clock rate: %d", clock);
                        return;
                }

-
-               // Writing configuration for T55x7 tag
-               T55xxWriteBlock(clock       |
-                                               T55x7_MODULATION_MANCHESTER |
-                                               2 << T55x7_MAXBLOCK_SHIFT,
-                                               0, 0, 0);
+               data[0] = clock | T55x7_MODULATION_MANCHESTER | (2 << T55x7_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);

        }
        }

-       else
-               // Writing configuration for T5555(Q5) tag
-               T55xxWriteBlock(0x1F << T5555_BITRATE_SHIFT |
-                                               T5555_MODULATION_MANCHESTER |
-                                               2 << T5555_MAXBLOCK_SHIFT,
-                                               0, 0, 0);
+
+       WriteT55xx(data, 0, 3);

 
        LED_D_OFF();
        Dbprintf("Tag %s written with 0x%08x%08x\n", card ? "T55x7":"T5555",
                         (uint32_t)(id >> 32), (uint32_t)id);
 }
 
 
        LED_D_OFF();
        Dbprintf("Tag %s written with 0x%08x%08x\n", card ? "T55x7":"T5555",
                         (uint32_t)(id >> 32), (uint32_t)id);
 }
 

-// Clone Indala 64-bit tag by UID to T55x7
-void CopyIndala64toT55x7(int hi, int lo)
-{
-
-       //Program the 2 data blocks for supplied 64bit UID
-       // and the block 0 for Indala64 format
-       T55xxWriteBlock(hi,1,0,0);
-       T55xxWriteBlock(lo,2,0,0);
-       //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=2)
-       T55xxWriteBlock(T55x7_BITRATE_RF_32    |
-                                       T55x7_MODULATION_PSK1 |
-                                       2 << T55x7_MAXBLOCK_SHIFT,
-                                       0, 0, 0);
-       //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data)
-       //      T5567WriteBlock(0x603E1042,0);
-
-       DbpString("DONE!");
-
-}
-
-void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int uid6, int uid7)
-{
-
-       //Program the 7 data blocks for supplied 224bit UID
-       // and the block 0 for Indala224 format
-       T55xxWriteBlock(uid1,1,0,0);
-       T55xxWriteBlock(uid2,2,0,0);
-       T55xxWriteBlock(uid3,3,0,0);
-       T55xxWriteBlock(uid4,4,0,0);
-       T55xxWriteBlock(uid5,5,0,0);
-       T55xxWriteBlock(uid6,6,0,0);
-       T55xxWriteBlock(uid7,7,0,0);
-       //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7)
-       T55xxWriteBlock(T55x7_BITRATE_RF_32    |
-                                       T55x7_MODULATION_PSK1 |
-                                       7 << T55x7_MAXBLOCK_SHIFT,
-                                       0,0,0);
-       //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data)
-       //      T5567WriteBlock(0x603E10E2,0);
-
-       DbpString("DONE!");
-
-}
-

 //-----------------------------------
 // EM4469 / EM4305 routines
 //-----------------------------------
 //-----------------------------------
 // EM4469 / EM4305 routines
 //-----------------------------------


@@ -1618,7 +1436,6 @@ void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int
 #define FWD_CMD_READ 0x9
 #define FWD_CMD_DISABLE 0x5
 
 #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
 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


@@ -1629,8 +1446,15 @@ uint8_t * fwd_write_ptr; //forwardlink bit pointer
 // see EM4469 spec
 //====================================================================
 //--------------------------------------------------------------------
 // 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 ) {
 uint8_t Prepare_Cmd( uint8_t cmd ) {

-       //--------------------------------------------------------------------

 
        *forward_ptr++ = 0; //start bit
        *forward_ptr++ = 0; //second pause for 4050 code
 
        *forward_ptr++ = 0; //start bit
        *forward_ptr++ = 0; //second pause for 4050 code


@@ -1650,10 +1474,7 @@ uint8_t Prepare_Cmd( uint8_t cmd ) {
 // prepares address bits
 // see EM4469 spec
 //====================================================================
 // prepares address bits
 // see EM4469 spec
 //====================================================================

-
-//--------------------------------------------------------------------

 uint8_t Prepare_Addr( uint8_t addr ) {
 uint8_t Prepare_Addr( uint8_t addr ) {

-       //--------------------------------------------------------------------

 
        register uint8_t line_parity;
 
 
        register uint8_t line_parity;
 


@@ -1674,10 +1495,7 @@ uint8_t Prepare_Addr( uint8_t addr ) {
 // prepares data bits intreleaved with parity bits
 // see EM4469 spec
 //====================================================================
 // prepares data bits intreleaved with parity bits
 // see EM4469 spec
 //====================================================================

-
-//--------------------------------------------------------------------

 uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) {
 uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) {

-       //--------------------------------------------------------------------

 
        register uint8_t line_parity;
        register uint8_t column_parity;
 
        register uint8_t line_parity;
        register uint8_t column_parity;


@@ -1729,7 +1547,6 @@ void SendForward(uint8_t fwd_bit_count) {
        fwd_write_ptr++;
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
        SpinDelayUs(55*8); //55 cycles off (8us each)for 4305
        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

        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
        SpinDelayUs(16*8); //16 cycles on (8us each)
 
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
        SpinDelayUs(16*8); //16 cycles on (8us each)
 


@@ -1741,7 +1558,6 @@ void SendForward(uint8_t fwd_bit_count) {
                        //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)
                        //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

                        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
                        SpinDelayUs(9*8); //16 cycles on (8us each)
                }
                        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
                        SpinDelayUs(9*8); //16 cycles on (8us each)
                }


@@ -1760,7 +1576,6 @@ void EM4xLogin(uint32_t Password) {
 
        //Wait for command to complete
        SpinDelay(20);
 
        //Wait for command to complete
        SpinDelay(20);

-

 }
 
 void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 }
 
 void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {


@@ -1771,7 +1586,7 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
        uint32_t i = 0;
 
        // Clear destination buffer before sending the command
        uint32_t i = 0;
 
        // Clear destination buffer before sending the command

-       memset(dest, 0x80, bufferlength);
+       BigBuf_Clear_ext(false);

 
        //If password mode do login
        if (PwdMode == 1) EM4xLogin(Pwd);
 
        //If password mode do login
        if (PwdMode == 1) EM4xLogin(Pwd);