minor code cleanup

[proxmark3-svn] / armsrc / lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 95a9fcf60a6c52d2d005fefda0ed5b2bb5bee17e..b9dbb8e27cdc386692cd58ad8923ae3d64d93f38 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -14,11 +14,12 @@
 #include "hitag2.h"
 #include "crc16.h"
 #include "string.h"
 #include "hitag2.h"
 #include "crc16.h"
 #include "string.h"

+#include "lfdemod.h"

 
 
 /**
 
 
 /**

-* Does the sample acquisition. If threshold is specified, the actual sampling 
-* is not commenced until the threshold has been reached. 
+* Does the sample acquisition. If threshold is specified, the actual sampling
+* is not commenced until the threshold has been reached.

 * @param trigger_threshold - the threshold
 * @param silent - is true, now outputs are made. If false, dbprints the status
 */
 * @param trigger_threshold - the threshold
 * @param silent - is true, now outputs are made. If false, dbprints the status
 */


@@ -48,12 +49,12 @@ void DoAcquisition125k_internal(int trigger_threshold,bool silent)
        if(!silent)
        {
                Dbprintf("buffer samples: %02x %02x %02x %02x %02x %02x %02x %02x ...",
        if(!silent)
        {
                Dbprintf("buffer samples: %02x %02x %02x %02x %02x %02x %02x %02x ...",

-                               dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]);
-               
+                   dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]);
+

        }
 }
 /**
        }
 }
 /**

-* Perform sample aquisition. 
+* Perform sample aquisition.

 */
 void DoAcquisition125k(int trigger_threshold)
 {
 */
 void DoAcquisition125k(int trigger_threshold)
 {


@@ -61,11 +62,11 @@ void DoAcquisition125k(int trigger_threshold)
 }
 
 /**
 }
 
 /**

-* Setup the FPGA to listen for samples. This method downloads the FPGA bitstream 
-* if not already loaded, sets divisor and starts up the antenna. 
+* Setup the FPGA to listen for samples. This method downloads the FPGA bitstream
+* if not already loaded, sets divisor and starts up the antenna.

 * @param divisor : 1, 88> 255 or negative ==> 134.8 KHz
 *                                 0 or 95 ==> 125 KHz
 * @param divisor : 1, 88> 255 or negative ==> 134.8 KHz
 *                                 0 or 95 ==> 125 KHz

-*                                 
+*

 **/
 void LFSetupFPGAForADC(int divisor, bool lf_field)
 {
 **/
 void LFSetupFPGAForADC(int divisor, bool lf_field)
 {


@@ -87,7 +88,7 @@ void LFSetupFPGAForADC(int divisor, bool lf_field)
        FpgaSetupSsc();
 }
 /**
        FpgaSetupSsc();
 }
 /**

-* Initializes the FPGA, and acquires the samples. 
+* Initializes the FPGA, and acquires the samples.

 **/
 void AcquireRawAdcSamples125k(int divisor)
 {
 **/
 void AcquireRawAdcSamples125k(int divisor)
 {


@@ -96,7 +97,7 @@ void AcquireRawAdcSamples125k(int divisor)
        DoAcquisition125k_internal(-1,false);
 }
 /**
        DoAcquisition125k_internal(-1,false);
 }
 /**

-* Initializes the FPGA for snoop-mode, and acquires the samples. 
+* Initializes the FPGA for snoop-mode, and acquires the samples.

 **/
 
 void SnoopLFRawAdcSamples(int divisor, int trigger_threshold)
 **/
 
 void SnoopLFRawAdcSamples(int divisor, int trigger_threshold)


@@ -121,7 +122,7 @@ void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1,
                divisor_used = 88; // 134.8 KHz
 
 
                divisor_used = 88; // 134.8 KHz
 
 

-       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); 
+       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used);

        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
        // Give it a bit of time for the resonant antenna to settle.
        SpinDelay(50);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
        // Give it a bit of time for the resonant antenna to settle.
        SpinDelay(50);


@@ -137,7 +138,7 @@ void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1,
                FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
                LED_D_OFF();
                SpinDelayUs(delay_off);
                FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
                LED_D_OFF();
                SpinDelayUs(delay_off);

-               FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); 
+               FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used);

 
                FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
                LED_D_ON();
 
                FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
                LED_D_ON();


@@ -149,7 +150,7 @@ void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1,
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        LED_D_OFF();
        SpinDelayUs(delay_off);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        LED_D_OFF();
        SpinDelayUs(delay_off);

-       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used); 
+       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor_used);

 
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
 
 
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
 


@@ -172,15 +173,12 @@ void ReadTItag(void)
        // when we read a TI tag we sample the zerocross line at 2Mhz
        // TI tags modulate a 1 as 16 cycles of 123.2Khz
        // TI tags modulate a 0 as 16 cycles of 134.2Khz
        // when we read a TI tag we sample the zerocross line at 2Mhz
        // TI tags modulate a 1 as 16 cycles of 123.2Khz
        // TI tags modulate a 0 as 16 cycles of 134.2Khz

-       #define FSAMPLE 2000000
-       #define FREQLO 123200
-       #define FREQHI 134200
+ #define FSAMPLE 2000000
+ #define FREQLO 123200
+ #define FREQHI 134200

 
        signed char *dest = (signed char *)BigBuf;
        int n = sizeof(BigBuf);
 
        signed char *dest = (signed char *)BigBuf;
        int n = sizeof(BigBuf);

-//     int *dest = GraphBuffer;
-//     int n = GraphTraceLen;
-

        // 128 bit shift register [shift3:shift2:shift1:shift0]
        uint32_t shift3 = 0, shift2 = 0, shift1 = 0, shift0 = 0;
 
        // 128 bit shift register [shift3:shift2:shift1:shift0]
        uint32_t shift3 = 0, shift2 = 0, shift1 = 0, shift0 = 0;
 


@@ -216,10 +214,10 @@ void ReadTItag(void)
 
                                // TI bits are coming to us lsb first so shift them
                                // right through our 128 bit right shift register
 
                                // TI bits are coming to us lsb first so shift them
                                // right through our 128 bit right shift register

-                         shift0 = (shift0>>1) | (shift1 << 31);
-                         shift1 = (shift1>>1) | (shift2 << 31);
-                         shift2 = (shift2>>1) | (shift3 << 31);
-                         shift3 >>= 1;
+                               shift0 = (shift0>>1) | (shift1 << 31);
+                               shift1 = (shift1>>1) | (shift2 << 31);
+                               shift2 = (shift2>>1) | (shift3 << 31);
+                               shift3 >>= 1;

 
                                // check if the cycles fall close to the number
                                // expected for either the low or high frequency
 
                                // check if the cycles fall close to the number
                                // expected for either the low or high frequency


@@ -254,18 +252,18 @@ void ReadTItag(void)
        if (cycles!=0xF0B) {
                DbpString("Info: No valid tag detected.");
        } else {
        if (cycles!=0xF0B) {
                DbpString("Info: No valid tag detected.");
        } else {

-         // put 64 bit data into shift1 and shift0
-         shift0 = (shift0>>24) | (shift1 << 8);
-         shift1 = (shift1>>24) | (shift2 << 8);
+               // put 64 bit data into shift1 and shift0
+               shift0 = (shift0>>24) | (shift1 << 8);
+               shift1 = (shift1>>24) | (shift2 << 8);

 
                // align 16 bit crc into lower half of shift2
 
                // align 16 bit crc into lower half of shift2

-         shift2 = ((shift2>>24) | (shift3 << 8)) & 0x0ffff;
+               shift2 = ((shift2>>24) | (shift3 << 8)) & 0x0ffff;

 
                // if r/w tag, check ident match
 
                // if r/w tag, check ident match

-               if ( shift3&(1<<15) ) {
+               if (shift3 & (1<<15) ) {

                        DbpString("Info: TI tag is rewriteable");
                        // only 15 bits compare, last bit of ident is not valid
                        DbpString("Info: TI tag is rewriteable");
                        // only 15 bits compare, last bit of ident is not valid

-                       if ( ((shift3>>16)^shift0)&0x7fff ) {
+                       if (((shift3 >> 16) ^ shift0) & 0x7fff ) {

                                DbpString("Error: Ident mismatch!");
                        } else {
                                DbpString("Info: TI tag ident is valid");
                                DbpString("Error: Ident mismatch!");
                        } else {
                                DbpString("Info: TI tag ident is valid");


@@ -280,7 +278,7 @@ void ReadTItag(void)
                // calculate CRC
                uint32_t crc=0;
 
                // calculate CRC
                uint32_t crc=0;
 

-               crc = update_crc16(crc, (shift0)&0xff);
+               crc = update_crc16(crc, (shift0)&0xff);

                crc = update_crc16(crc, (shift0>>8)&0xff);
                crc = update_crc16(crc, (shift0>>16)&0xff);
                crc = update_crc16(crc, (shift0>>24)&0xff);
                crc = update_crc16(crc, (shift0>>8)&0xff);
                crc = update_crc16(crc, (shift0>>16)&0xff);
                crc = update_crc16(crc, (shift0>>24)&0xff);


@@ -290,7 +288,7 @@ void ReadTItag(void)
                crc = update_crc16(crc, (shift1>>24)&0xff);
 
                Dbprintf("Info: Tag data: %x%08x, crc=%x",
                crc = update_crc16(crc, (shift1>>24)&0xff);
 
                Dbprintf("Info: Tag data: %x%08x, crc=%x",

-                       (unsigned int)shift1, (unsigned int)shift0, (unsigned int)shift2 & 0xFFFF);
+                   (unsigned int)shift1, (unsigned int)shift0, (unsigned int)shift2 & 0xFFFF);

                if (crc != (shift2&0xffff)) {
                        Dbprintf("Error: CRC mismatch, expected %x", (unsigned int)crc);
                } else {
                if (crc != (shift2&0xffff)) {
                        Dbprintf("Error: CRC mismatch, expected %x", (unsigned int)crc);
                } else {


@@ -329,7 +327,7 @@ void AcquireTiType(void)
        int i, j, n;
        // tag transmission is <20ms, sampling at 2M gives us 40K samples max
        // each sample is 1 bit stuffed into a uint32_t so we need 1250 uint32_t
        int i, j, n;
        // tag transmission is <20ms, sampling at 2M gives us 40K samples max
        // each sample is 1 bit stuffed into a uint32_t so we need 1250 uint32_t

-       #define TIBUFLEN 1250
+ #define TIBUFLEN 1250

 
        // clear buffer
        memset(BigBuf,0,sizeof(BigBuf));
 
        // clear buffer
        memset(BigBuf,0,sizeof(BigBuf));


@@ -399,9 +397,9 @@ void AcquireTiType(void)
 // 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)
 {
 // 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);   
+       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

        if(crc == 0) {
        if(crc == 0) {

-               crc = update_crc16(crc, (idlo)&0xff);
+               crc = update_crc16(crc, (idlo)&0xff);

                crc = update_crc16(crc, (idlo>>8)&0xff);
                crc = update_crc16(crc, (idlo>>16)&0xff);
                crc = update_crc16(crc, (idlo>>24)&0xff);
                crc = update_crc16(crc, (idlo>>8)&0xff);
                crc = update_crc16(crc, (idlo>>16)&0xff);
                crc = update_crc16(crc, (idlo>>24)&0xff);


@@ -411,7 +409,7 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
                crc = update_crc16(crc, (idhi>>24)&0xff);
        }
        Dbprintf("Writing to tag: %x%08x, crc=%x",
                crc = update_crc16(crc, (idhi>>24)&0xff);
        }
        Dbprintf("Writing to tag: %x%08x, crc=%x",

-               (unsigned int) idhi, (unsigned int) idlo, crc);
+           (unsigned int) idhi, (unsigned int) idlo, crc);

 
        // TI tags charge at 134.2Khz
        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
 
        // TI tags charge at 134.2Khz
        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz


@@ -470,18 +468,18 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
 {
        int i;
        uint8_t *tab = (uint8_t *)BigBuf;
 {
        int i;
        uint8_t *tab = (uint8_t *)BigBuf;

-    
+

        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);

-    
+

        AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;
        AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;

-    
+

        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(;;) {
                while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {
        i = 0;
        for(;;) {
                while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {


@@ -491,18 +489,18 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
                        }
                        WDT_HIT();
                }
                        }
                        WDT_HIT();
                }

-        
+

                if (ledcontrol)
                        LED_D_ON();
                if (ledcontrol)
                        LED_D_ON();

-        
+

                if(tab[i])
                        OPEN_COIL();
                else
                        SHORT_COIL();
                if(tab[i])
                        OPEN_COIL();
                else
                        SHORT_COIL();

-        
+

                if (ledcontrol)
                        LED_D_OFF();
                if (ledcontrol)
                        LED_D_OFF();

-        
+

                while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {
                        if(BUTTON_PRESS()) {
                                DbpString("Stopped");
                while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {
                        if(BUTTON_PRESS()) {
                                DbpString("Stopped");


@@ -510,7 +508,7 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
                        }
                        WDT_HIT();
                }
                        }
                        WDT_HIT();
                }

-        
+

                i++;
                if(i == period) {
                        i = 0;
                i++;
                if(i == period) {
                        i = 0;


@@ -630,87 +628,12 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
                LED_A_OFF();
 }
 
                LED_A_OFF();
 }
 

-size_t fsk_demod(uint8_t * dest, size_t size)
-{
-       uint32_t last_transition = 0;
-       uint32_t idx = 1;
-       // we don't care about actual value, only if it's more or less than a
-       // threshold essentially we capture zero crossings for later analysis
-       uint8_t threshold_value = 127;
-       
-       // sync to first lo-hi transition, and threshold
-
-       //Need to threshold first sample
-       if(dest[0] < threshold_value) dest[0] = 0;
-       else dest[0] = 1;
-
-       size_t numBits = 0;
-       // count cycles between consecutive lo-hi transitions, there should be either 8 (fc/8)
-       // or 10 (fc/10) cycles but in practice due to noise etc we may end up with with anywhere
-       // between 7 to 11 cycles so fuzz it by treat anything <9 as 8 and anything else as 10
-       for(idx = 1; idx < size; idx++) {
-               // threshold current value
-               if (dest[idx] < threshold_value) dest[idx] = 0;
-               else dest[idx] = 1;
-
-               // Check for 0->1 transition
-               if (dest[idx-1] < dest[idx]) { // 0 -> 1 transition
-
-                       if (idx-last_transition <  9) {
-                                       dest[numBits]=1;
-                       } else {
-                                       dest[numBits]=0;
-                       }
-                       last_transition = idx;
-                       numBits++;
-               }
-       }
-       return numBits; //Actually, it returns the number of bytes, but each byte represents a bit: 1 or 0
-}
-
-
-size_t aggregate_bits(uint8_t *dest,size_t size, uint8_t h2l_crossing_value,uint8_t l2h_crossing_value, uint8_t maxConsequtiveBits, uint8_t invert )
-{
-       uint8_t lastval=dest[0];
-       uint32_t idx=0;
-       size_t numBits=0;
-       uint32_t n=1;
-
-       for( idx=1; idx < size; idx++) {
-
-               if (dest[idx]==lastval) {
-                       n++;
-                       continue;
-               }
-               //if lastval was 1, we have a 1->0 crossing
-               if ( dest[idx-1]==1 ) {
-                       n=(n+1) / h2l_crossing_value;
-               } else {// 0->1 crossing
-                       n=(n+1) / l2h_crossing_value;
-               }
-               if (n == 0) n = 1;
-
-               if(n < maxConsequtiveBits) //Consecutive 
-               {
-                       if(invert==0){ //invert bits 
-                               memset(dest+numBits, dest[idx-1] , n);
-                       }else{
-                               memset(dest+numBits, dest[idx-1]^1 , n);        
-                       }
-                       
-                       numBits += n;
-               }
-               n=0;
-               lastval=dest[idx];
-       }//end for
-       return numBits;
-}
-// loop to capture 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

 void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {
        uint8_t *dest = (uint8_t *)BigBuf;
 
 void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {
        uint8_t *dest = (uint8_t *)BigBuf;
 

-       size_t size=0,idx=0; //, found=0;
+       size_t size=0; //, found=0;

        uint32_t hi2=0, hi=0, lo=0;
 
        // Configure to go in 125Khz listen mode
        uint32_t hi2=0, hi=0, lo=0;
 
        // Configure to go in 125Khz listen mode


@@ -722,192 +645,186 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
                if (ledcontrol) LED_A_ON();
 
                DoAcquisition125k_internal(-1,true);
                if (ledcontrol) LED_A_ON();
 
                DoAcquisition125k_internal(-1,true);

-               size  = sizeof(BigBuf);
-

                // FSK demodulator
                // FSK demodulator

-               size = fsk_demod(dest, size);
-
-               // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns
-               // 1->0 : fc/8 in sets of 6  (RF/50 / 8 = 6.25)
-               // 0->1 : fc/10 in sets of 5 (RF/50 / 10= 5)
-               // do not invert
-               size = aggregate_bits(dest,size, 6,5,5,0); 
+               size = HIDdemodFSK(dest, sizeof(BigBuf), &hi2, &hi, &lo);

 
                WDT_HIT();
 
 
                WDT_HIT();
 

-               // final loop, go over previously decoded manchester data and decode into usable tag ID
-               // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0
-               uint8_t frame_marker_mask[] = {1,1,1,0,0,0};
-               int numshifts = 0;
-               idx = 0;
-               while( idx + sizeof(frame_marker_mask) < size) {
-                       // search for a start of frame marker
-                       if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0)
-                       { // frame marker found
-                               idx+=sizeof(frame_marker_mask);
-                               while(dest[idx] != dest[idx+1] && idx < size-2)
-                               {       
-                                       // Keep going until next frame marker (or error)
-                                       // Shift in a bit. Start by shifting high registers
-                                       hi2 = (hi2<<1)|(hi>>31);
-                                       hi = (hi<<1)|(lo>>31);
-                                       //Then, shift in a 0 or one into low
-                                       if (dest[idx] && !dest[idx+1])  // 1 0
-                                               lo=(lo<<1)|0;
-                                       else // 0 1
-                                               lo=(lo<<1)|
-                                                               1;
-                                       numshifts++;
-                                       idx += 2;
+               if (size>0 && lo>0){
+                       // final loop, go over previously decoded manchester data and decode into usable tag ID
+                       // 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0
+                       if (hi2 != 0){ //extra large HID tags
+                               Dbprintf("TAG ID: %x%08x%08x (%d)",
+                                   (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
+                       }else {  //standard HID tags <38 bits
+                               //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd
+                               uint8_t bitlen = 0;
+                               uint32_t fc = 0;
+                               uint32_t cardnum = 0;
+                               if (((hi>>5)&1) == 1){//if bit 38 is set then < 37 bit format is used
+                                       uint32_t lo2=0;
+                                       lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
+                                       uint8_t idx3 = 1;
+                                       while(lo2 > 1){ //find last bit set to 1 (format len bit)
+                                               lo2=lo2 >> 1;
+                                               idx3++;
+                                       }
+                                       bitlen = idx3+19;
+                                       fc =0;
+                                       cardnum=0;
+                                       if(bitlen == 26){
+                                               cardnum = (lo>>1)&0xFFFF;
+                                               fc = (lo>>17)&0xFF;
+                                       }
+                                       if(bitlen == 37){
+                                               cardnum = (lo>>1)&0x7FFFF;
+                                               fc = ((hi&0xF)<<12)|(lo>>20);
+                                       }
+                                       if(bitlen == 34){
+                                               cardnum = (lo>>1)&0xFFFF;
+                                               fc= ((hi&1)<<15)|(lo>>17);
+                                       }
+                                       if(bitlen == 35){
+                                               cardnum = (lo>>1)&0xFFFFF;
+                                               fc = ((hi&1)<<11)|(lo>>21);
+                                       }

                                }
                                }

-                               //Dbprintf("Num shifts: %d ", numshifts);
-                               // Hopefully, we read a tag and  hit upon the next frame marker
-                               if(idx + sizeof(frame_marker_mask) < size)
-                               {
-                                       if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0)
-                                       {
-                                               if (hi2 != 0){ //extra large HID tags
-                                                       Dbprintf("TAG ID: %x%08x%08x (%d)",
-                                                                (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
-                                               }
-                                               else {  //standard HID tags <38 bits
-                                                       //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd
-                                                       uint8_t bitlen = 0;
-                                                       uint32_t fc = 0;
-                                                       uint32_t cardnum = 0;
-                                                       if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
-                                                               uint32_t lo2=0;
-                                                               lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
-                                                               uint8_t idx3 = 1;
-                                                               while(lo2>1){ //find last bit set to 1 (format len bit)
-                                                                       lo2=lo2>>1;
-                                                                       idx3++;
-                                                               }
-                                                               bitlen =idx3+19;  
-                                                               fc =0;
-                                                               cardnum=0;
-                                                               if(bitlen==26){
-                                                                       cardnum = (lo>>1)&0xFFFF;
-                                                                       fc = (lo>>17)&0xFF;
-                                                               }
-                                                               if(bitlen==37){
-                                                                       cardnum = (lo>>1)&0x7FFFF;
-                                                                       fc = ((hi&0xF)<<12)|(lo>>20);
-                                                               }
-                                                               if(bitlen==34){
-                                                                       cardnum = (lo>>1)&0xFFFF;
-                                                                       fc= ((hi&1)<<15)|(lo>>17);
-                                                               }
-                                                               if(bitlen==35){
-                                                                       cardnum = (lo>>1)&0xFFFFF;
-                                                                       fc = ((hi&1)<<11)|(lo>>21);
-                                                               }
-                                                       }
-                                                       else { //if bit 38 is not set then 37 bit format is used
-                                                               bitlen= 37;
-                                                               fc =0;
-                                                               cardnum=0;
-                                                               if(bitlen==37){
-                                                                       cardnum = (lo>>1)&0x7FFFF;
-                                                                       fc = ((hi&0xF)<<12)|(lo>>20);
-                                                               }
-                                                       }
-                                                                       //Dbprintf("TAG ID: %x%08x (%d)",
-                                                       // (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);                              
-                                                       Dbprintf("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
-                                                               (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
-                                                               (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum);
-                                               }
-                                               if (findone){
-                                                       if (ledcontrol) LED_A_OFF();
-                                                       return;
-                                               }
+                               else { //if bit 38 is not set then 37 bit format is used
+                                       bitlen= 37;
+                                       fc =0;
+                                       cardnum=0;
+                                       if(bitlen==37){
+                                               cardnum = (lo>>1)&0x7FFFF;
+                                               fc = ((hi&0xF)<<12)|(lo>>20);

                                        }
                                }
                                        }
                                }

-                               // reset
-                               hi2 = hi = lo = 0;
-                               numshifts = 0;
-                       }else
-                       {
-                               idx++;
+                               //Dbprintf("TAG ID: %x%08x (%d)",
+                               // (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
+                               Dbprintf("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
+                                   (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
+                                   (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum);
+                       }
+                       if (findone){
+                               if (ledcontrol) LED_A_OFF();
+                               return;

                        }
                        }

+                       // reset
+                       hi2 = hi = lo = 0;

                }
                WDT_HIT();
                }
                WDT_HIT();

-

        }
        DbpString("Stopped");
        if (ledcontrol) LED_A_OFF();
 }
 
        }
        DbpString("Stopped");
        if (ledcontrol) LED_A_OFF();
 }
 

-uint32_t bytebits_to_byte(uint8_t* src, int numbits)
+void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)

 {
 {

-       uint32_t num = 0;
-       for(int i = 0 ; i < numbits ; i++)
-       {
-               num = (num << 1) | (*src);
-               src++;
+       uint8_t *dest = (uint8_t *)BigBuf;
+
+       size_t size=0;
+       int clk=0, invert=0, errCnt=0;
+       uint64_t lo=0;
+       // Configure to go in 125Khz listen mode
+       LFSetupFPGAForADC(95, true);
+
+       while(!BUTTON_PRESS()) {
+
+               WDT_HIT();
+               if (ledcontrol) LED_A_ON();
+
+               DoAcquisition125k_internal(-1,true);
+               size = sizeof(BigBuf);
+               //Dbprintf("DEBUG: Buffer got");
+               //askdemod and manchester decode
+               errCnt = askmandemod(dest, &size, &clk, &invert);
+               //Dbprintf("DEBUG: ASK Got");
+               WDT_HIT();
+
+               if (errCnt>=0){
+                       lo = Em410xDecode(dest,size);
+                       //Dbprintf("DEBUG: EM GOT");
+                       if (lo>0){
+                               Dbprintf("EM TAG ID: %02x%08x - (%05d_%03d_%08d)",
+                                   (uint32_t)(lo>>32),
+                                   (uint32_t)lo,
+                                   (uint32_t)(lo&0xFFFF),
+                                   (uint32_t)((lo>>16LL) & 0xFF),
+                                   (uint32_t)(lo & 0xFFFFFF));
+                       }
+                       if (findone){
+                               if (ledcontrol) LED_A_OFF();
+                               return;
+                       }
+               } else{
+                       //Dbprintf("DEBUG: No Tag");
+               }
+               WDT_HIT();
+               lo = 0;
+               clk=0;
+               invert=0;
+               errCnt=0;
+               size=0;

        }
        }

-       return num;
+       DbpString("Stopped");
+       if (ledcontrol) LED_A_OFF();

 }
 
 void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {
        uint8_t *dest = (uint8_t *)BigBuf;
 }
 
 void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {
        uint8_t *dest = (uint8_t *)BigBuf;

-       size_t size=0, idx=0;
+       int idx=0;

        uint32_t code=0, code2=0;
        uint32_t code=0, code2=0;

-
+       uint8_t version=0;
+       uint8_t facilitycode=0;
+       uint16_t number=0;

        // Configure to go in 125Khz listen mode
        LFSetupFPGAForADC(95, true);
        // Configure to go in 125Khz listen mode
        LFSetupFPGAForADC(95, true);

-       
+

        while(!BUTTON_PRESS()) {
                WDT_HIT();
                if (ledcontrol) LED_A_ON();
                DoAcquisition125k_internal(-1,true);
        while(!BUTTON_PRESS()) {
                WDT_HIT();
                if (ledcontrol) LED_A_ON();
                DoAcquisition125k_internal(-1,true);

-               size  = sizeof(BigBuf);
-
-               // FSK demodulator
-               size = fsk_demod(dest, size);
-               // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns
-               // 1->0 : fc/8 in sets of 7  (RF/64 / 8 = 8)
-               // 0->1 : fc/10 in sets of 6 (RF/64 / 10 = 6.4)
-               size = aggregate_bits(dest, size, 7,6,13,1);  //13 max Consecutive should be ok as most 0s in row should be 10 for init seq - invert bits
+               //fskdemod and get start index

                WDT_HIT();
                WDT_HIT();

-               //Index map
-               //0           10          20          30          40          50          60
-               //|           |           |           |           |           |           |
-               //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
-               //-----------------------------------------------------------------------------
-               //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
-               //
-               //XSF(version)facility:codeone+codetwo
-               //Handle the data
-           uint8_t mask[] = {0,0,0,0,0,0,0,0,0,1};
-               for( idx=0; idx < (size - 64); idx++) {
-               if ( memcmp(dest + idx, mask, sizeof(mask))==0) {
-                       //frame marker found
-                if(findone){ //only print binary if we are doing one
-                               Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx],   dest[idx+1],   dest[idx+2],dest[idx+3],dest[idx+4],dest[idx+5],dest[idx+6],dest[idx+7],dest[idx+8]);
-                                   Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15],dest[idx+16],dest[idx+17]);                         
-                                   Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23],dest[idx+24],dest[idx+25],dest[idx+26]);
-                                   Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31],dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35]);
-                                   Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39],dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44]);
-                                   Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+45],dest[idx+46],dest[idx+47],dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53]);
-                                   Dbprintf("%d%d%d%d%d%d%d%d %d%d",dest[idx+54],dest[idx+55],dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]);
-                               }
-                               code = bytebits_to_byte(dest+idx,32);
-                           code2 = bytebits_to_byte(dest+idx+32,32); 
-                           short version = bytebits_to_byte(dest+idx+28,8); //14,4
-                           char facilitycode = bytebits_to_byte(dest+idx+19,8) ;
-                           uint16_t number = (bytebits_to_byte(dest+idx+37,8)<<8)|(bytebits_to_byte(dest+idx+46,8)); //36,9
-                           
-                           Dbprintf("XSF(%02d)%02x:%d (%08x%08x)",version,facilitycode,number,code,code2);                     
-                               // if we're only looking for one tag 
-                               if (findone){
-                                       if (ledcontrol) LED_A_OFF();
-                                       //LED_A_OFF();
-                                       return;
-                               }
-                       }               
+               idx = IOdemodFSK(dest,sizeof(BigBuf));
+               if (idx>0){
+                       //valid tag found
+
+                       //Index map
+                       //0           10          20          30          40          50          60
+                       //|           |           |           |           |           |           |
+                       //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
+                       //-----------------------------------------------------------------------------
+                       //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
+                       //
+                       //XSF(version)facility:codeone+codetwo
+                       //Handle the data
+                       if(findone){ //only print binary if we are doing one
+                               Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx],   dest[idx+1],   dest[idx+2],dest[idx+3],dest[idx+4],dest[idx+5],dest[idx+6],dest[idx+7],dest[idx+8]);
+                               Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15],dest[idx+16],dest[idx+17]);
+                               Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23],dest[idx+24],dest[idx+25],dest[idx+26]);
+                               Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31],dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35]);
+                               Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39],dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44]);
+                               Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+45],dest[idx+46],dest[idx+47],dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53]);
+                               Dbprintf("%d%d%d%d%d%d%d%d %d%d",dest[idx+54],dest[idx+55],dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]);
+                       }
+                       code = bytebits_to_byte(dest+idx,32);
+                       code2 = bytebits_to_byte(dest+idx+32,32);
+                       version = bytebits_to_byte(dest+idx+27,8); //14,4
+                       facilitycode = bytebits_to_byte(dest+idx+18,8) ;
+                       number = (bytebits_to_byte(dest+idx+36,8)<<8)|(bytebits_to_byte(dest+idx+45,8)); //36,9
+
+                       Dbprintf("XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);
+                       // if we're only looking for one tag
+                       if (findone){
+                               if (ledcontrol) LED_A_OFF();
+                               //LED_A_OFF();
+                               return;
+                       }
+                       code=code2=0;
+                       version=facilitycode=0;
+                       number=0;
+                       idx=0;

                }
                WDT_HIT();
        }
                }
                WDT_HIT();
        }


@@ -1014,11 +931,11 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMod
        // Opcode
        T55xxWriteBit(1);
        T55xxWriteBit(0); //Page 0
        // Opcode
        T55xxWriteBit(1);
        T55xxWriteBit(0); //Page 0

-  if (PwdMode == 1){
-    // Pwd
-    for (i = 0x80000000; i != 0; i >>= 1)
-      T55xxWriteBit(Pwd & i);
-  }
+       if (PwdMode == 1){
+               // Pwd
+               for (i = 0x80000000; i != 0; i >>= 1)
+                       T55xxWriteBit(Pwd & i);
+       }

        // Lock bit
        T55xxWriteBit(0);
 
        // Lock bit
        T55xxWriteBit(0);
 


@@ -1043,28 +960,28 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
 {
        uint8_t *dest = (uint8_t *)BigBuf;
        //int m=0, i=0; //enio adjustment 12/10/14
 {
        uint8_t *dest = (uint8_t *)BigBuf;
        //int m=0, i=0; //enio adjustment 12/10/14

-       uint32_t m=0, i=0;
+       uint32_t m=0, i=0;

        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        m = sizeof(BigBuf);
        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        m = sizeof(BigBuf);

-  // Clear destination buffer before sending the command
+       // Clear destination buffer before sending the command

        memset(dest, 128, m);
        // 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();
        memset(dest, 128, m);
        // 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();

-  
+

        LED_D_ON();
        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
        LED_D_ON();
        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

-  
+

        // Give it a bit of time for the resonant antenna to settle.
        // And for the tag to fully power up
        SpinDelay(150);
        // Give it a bit of time for the resonant antenna to settle.
        // And for the tag to fully power up
        SpinDelay(150);

-  
+

        // Now start writting
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelayUs(START_GAP);
        // Now start writting
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelayUs(START_GAP);

-  
+

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


@@ -1078,11 +995,11 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
        // Block
        for (i = 0x04; i != 0; i >>= 1)
                T55xxWriteBit(Block & i);
        // Block
        for (i = 0x04; i != 0; i >>= 1)
                T55xxWriteBit(Block & i);

-  
-  // Turn field on to read the response
+
+       // Turn field on to read the response

        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

-  
+

        // Now do the acquisition
        i = 0;
        for(;;) {
        // Now do the acquisition
        i = 0;
        for(;;) {


@@ -1093,13 +1010,13 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
                        dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
                        // we don't care about actual value, only if it's more or less than a
                        // threshold essentially we capture zero crossings for later analysis
                        dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
                        // we don't care about actual value, only if it's more or less than a
                        // threshold essentially we capture zero crossings for later analysis

-      //                       if(dest[i] < 127) dest[i] = 0; else dest[i] = 1;
+                       //                      if(dest[i] < 127) dest[i] = 0; else dest[i] = 1;

                        i++;
                        if (i >= m) break;
                }
        }
                        i++;
                        if (i >= m) break;
                }
        }

-  
-  FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

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


@@ -1108,36 +1025,36 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
 void T55xxReadTrace(void){
        uint8_t *dest = (uint8_t *)BigBuf;
        int m=0, i=0;
 void T55xxReadTrace(void){
        uint8_t *dest = (uint8_t *)BigBuf;
        int m=0, i=0;

-  
+

        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        m = sizeof(BigBuf);
        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        m = sizeof(BigBuf);

-  // Clear destination buffer before sending the command
+       // Clear destination buffer before sending the command

        memset(dest, 128, m);
        // 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();
        memset(dest, 128, m);
        // 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();

-  
+

        LED_D_ON();
        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
        LED_D_ON();
        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

-  
+

        // Give it a bit of time for the resonant antenna to settle.
        // And for the tag to fully power up
        SpinDelay(150);
        // Give it a bit of time for the resonant antenna to settle.
        // And for the tag to fully power up
        SpinDelay(150);

-  
+

        // Now start writting
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelayUs(START_GAP);
        // Now start writting
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelayUs(START_GAP);

-  
+

        // Opcode
        T55xxWriteBit(1);
        T55xxWriteBit(1); //Page 1
        // Opcode
        T55xxWriteBit(1);
        T55xxWriteBit(1); //Page 1

-  
-  // Turn field on to read the response
+
+       // Turn field on to read the response

        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);

-  
+

        // Now do the acquisition
        i = 0;
        for(;;) {
        // Now do the acquisition
        i = 0;
        for(;;) {


@@ -1150,8 +1067,8 @@ void T55xxReadTrace(void){
                        if (i >= m) break;
                }
        }
                        if (i >= m) break;
                }
        }

-  
-  FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

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


@@ -1162,141 +1079,141 @@ 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;
 {
        int data1=0, data2=0, data3=0, data4=0, data5=0, data6=0; //up to six blocks for long format
        int last_block = 0;

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

        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);
        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
        if (longFMT) { // if long format there are 6 blocks

-         T55xxWriteBlock(data4,4,0,0);
-         T55xxWriteBlock(data5,5,0,0);
-         T55xxWriteBlock(data6,6,0,0);
-  }
-  
+               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    |
        // 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);
-  
+                                       T55x7_MODULATION_FSK2a |
+                                       last_block << T55x7_MAXBLOCK_SHIFT,
+                                       0,0,0);
+

        LED_D_OFF();
        LED_D_OFF();

-       
+

        DbpString("DONE!");
 }
 
 void CopyIOtoT55x7(uint32_t hi, uint32_t lo, uint8_t longFMT)
 {
        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;
-    
-    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);
-       
-    //Config Block
-    T55xxWriteBlock(0x00147040,0,0,0);
-    LED_D_OFF();
-       
-    DbpString("DONE!");
+       int data1=0, data2=0; //up to six blocks for long format
+
+       data1 = hi;  // load preamble
+       data2 = lo;
+
+       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);
+
+       //Config Block
+       T55xxWriteBlock(0x00147040,0,0,0);
+       LED_D_OFF();
+
+       DbpString("DONE!");

 }
 
 // Define 9bit header for EM410x tags
 }
 
 // Define 9bit header for EM410x tags


@@ -1385,7 +1302,7 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo)
                                // Fall through...
                        case 64:
                                clock = T55x7_BITRATE_RF_64;
                                // Fall through...
                        case 64:
                                clock = T55x7_BITRATE_RF_64;

-                               break;      
+                               break;

                        default:
                                Dbprintf("Invalid clock rate: %d", clock);
                                return;
                        default:
                                Dbprintf("Invalid clock rate: %d", clock);
                                return;


@@ -1393,20 +1310,20 @@ void WriteEM410x(uint32_t card, uint32_t id_hi, uint32_t id_lo)
 
                // Writing configuration for T55x7 tag
                T55xxWriteBlock(clock       |
 
                // Writing configuration for T55x7 tag
                T55xxWriteBlock(clock       |

-                               T55x7_MODULATION_MANCHESTER |
-                               2 << T55x7_MAXBLOCK_SHIFT,
-                               0, 0, 0);
-  }
+                   T55x7_MODULATION_MANCHESTER |
+                   2 << T55x7_MAXBLOCK_SHIFT,
+                   0, 0, 0);
+       }

        else
                // Writing configuration for T5555(Q5) tag
                T55xxWriteBlock(0x1F << T5555_BITRATE_SHIFT |
        else
                // Writing configuration for T5555(Q5) tag
                T55xxWriteBlock(0x1F << T5555_BITRATE_SHIFT |

-                               T5555_MODULATION_MANCHESTER   |
-                               2 << T5555_MAXBLOCK_SHIFT,
-                               0, 0, 0);
+                   T5555_MODULATION_MANCHESTER   |
+                   2 << T5555_MAXBLOCK_SHIFT,
+                   0, 0, 0);

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

-                                       (uint32_t)(id >> 32), (uint32_t)id);
+           (uint32_t)(id >> 32), (uint32_t)id);

 }
 
 // Clone Indala 64-bit tag by UID to T55x7
 }
 
 // Clone Indala 64-bit tag by UID to T55x7


@@ -1419,15 +1336,15 @@ void CopyIndala64toT55x7(int hi, int lo)
        T55xxWriteBlock(lo,2,0,0);
        //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=2)
        T55xxWriteBlock(T55x7_BITRATE_RF_32    |
        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);
+           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)
        //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=2;Inverse data)

-//     T5567WriteBlock(0x603E1042,0);
+       //      T5567WriteBlock(0x603E1042,0);

 
        DbpString("DONE!");
 
 
        DbpString("DONE!");
 

-}      
+}

 
 void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int uid6, int uid7)
 {
 
 void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int uid6, int uid7)
 {


@@ -1443,11 +1360,11 @@ void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int
        T55xxWriteBlock(uid7,7,0,0);
        //Config for Indala (RF/32;PSK1 with RF/2;Maxblock=7)
        T55xxWriteBlock(T55x7_BITRATE_RF_32    |
        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);
+           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)
        //Alternative config for Indala (Extended mode;RF/32;PSK1 with RF/2;Maxblock=7;Inverse data)

-//     T5567WriteBlock(0x603E10E2,0);
+       //      T5567WriteBlock(0x603E10E2,0);

 
        DbpString("DONE!");
 
 
        DbpString("DONE!");
 


@@ -1470,114 +1387,114 @@ int DemodPCF7931(uint8_t **outBlocks) {
        int num_blocks = 0;
        int lmin=128, lmax=128;
        uint8_t dir;
        int num_blocks = 0;
        int lmin=128, lmax=128;
        uint8_t dir;

-       
+

        AcquireRawAdcSamples125k(0);
        AcquireRawAdcSamples125k(0);

-       
+

        lmin = 64;
        lmax = 192;
        lmin = 64;
        lmax = 192;

-       
+

        i = 2;
        i = 2;

-       
+

        /* Find first local max/min */
        if(GraphBuffer[1] > GraphBuffer[0]) {
        /* Find first local max/min */
        if(GraphBuffer[1] > GraphBuffer[0]) {

-    while(i < GraphTraceLen) {
-      if( !(GraphBuffer[i] > GraphBuffer[i-1]) && GraphBuffer[i] > lmax)
-        break;
-      i++;
-    }
-    dir = 0;
+               while(i < GraphTraceLen) {
+                       if( !(GraphBuffer[i] > GraphBuffer[i-1]) && GraphBuffer[i] > lmax)
+                               break;
+                       i++;
+               }
+               dir = 0;

        }
        else {
        }
        else {

-    while(i < GraphTraceLen) {
-      if( !(GraphBuffer[i] < GraphBuffer[i-1]) && GraphBuffer[i] < lmin)
-        break;
-      i++;
-    }
-    dir = 1;
+               while(i < GraphTraceLen) {
+                       if( !(GraphBuffer[i] < GraphBuffer[i-1]) && GraphBuffer[i] < lmin)
+                               break;
+                       i++;
+               }
+               dir = 1;

        }
        }

-       
+

        lastval = i++;
        half_switch = 0;
        pmc = 0;
        block_done = 0;
        lastval = i++;
        half_switch = 0;
        pmc = 0;
        block_done = 0;

-       
+

        for (bitidx = 0; i < GraphTraceLen; i++)
        {
        for (bitidx = 0; i < GraphTraceLen; i++)
        {

-           if ( (GraphBuffer[i-1] > GraphBuffer[i] && dir == 1 && GraphBuffer[i] > lmax) || (GraphBuffer[i-1] < GraphBuffer[i] && dir == 0 && GraphBuffer[i] < lmin))
-           {
-             lc = i - lastval;
-             lastval = i;
-             
-             // Switch depending on lc length:
-             // Tolerance is 1/8 of clock rate (arbitrary)
-             if (abs(lc-clock/4) < tolerance) {
-               // 16T0
-               if((i - pmc) == lc) { /* 16T0 was previous one */
-                 /* It's a PMC ! */
-                 i += (128+127+16+32+33+16)-1;
-                 lastval = i;
-                 pmc = 0;
-                 block_done = 1;
-               }
-               else {
-                 pmc = i;
-               }
-             } else if (abs(lc-clock/2) < tolerance) {
-               // 32TO
-               if((i - pmc) == lc) { /* 16T0 was previous one */
-                 /* It's a PMC ! */
-                 i += (128+127+16+32+33)-1;
-                 lastval = i;
-                 pmc = 0;
-                 block_done = 1;
-               }
-               else if(half_switch == 1) {
-                 BitStream[bitidx++] = 0;
-                 half_switch = 0;
-               }
-               else
-                 half_switch++;
-             } else if (abs(lc-clock) < tolerance) {
-               // 64TO
-               BitStream[bitidx++] = 1;
-             } else {
-               // Error
-               warnings++;
-               if (warnings > 10)
-               {
-                 Dbprintf("Error: too many detection errors, aborting.");
-                 return 0;
-               }
-             }
-             
-             if(block_done == 1) {
-               if(bitidx == 128) {
-                 for(j=0; j<16; j++) {
-                   Blocks[num_blocks][j] = 128*BitStream[j*8+7]+
-                   64*BitStream[j*8+6]+
-                   32*BitStream[j*8+5]+
-                   16*BitStream[j*8+4]+
-                   8*BitStream[j*8+3]+
-                   4*BitStream[j*8+2]+
-                   2*BitStream[j*8+1]+
-                   BitStream[j*8];
-                 }
-                 num_blocks++;
-               }
-               bitidx = 0;
-               block_done = 0;
-               half_switch = 0;
-             }
-             if(i < GraphTraceLen)
-             {
-                     if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
-                     else dir = 1;             
-             }
-           }
-           if(bitidx==255)
-             bitidx=0;
-           warnings = 0;
-           if(num_blocks == 4) break;
+               if ( (GraphBuffer[i-1] > GraphBuffer[i] && dir == 1 && GraphBuffer[i] > lmax) || (GraphBuffer[i-1] < GraphBuffer[i] && dir == 0 && GraphBuffer[i] < lmin))
+               {
+                       lc = i - lastval;
+                       lastval = i;
+
+                       // Switch depending on lc length:
+                       // Tolerance is 1/8 of clock rate (arbitrary)
+                       if (abs(lc-clock/4) < tolerance) {
+                               // 16T0
+                               if((i - pmc) == lc) { /* 16T0 was previous one */
+                                       /* It's a PMC ! */
+                                       i += (128+127+16+32+33+16)-1;
+                                       lastval = i;
+                                       pmc = 0;
+                                       block_done = 1;
+                               }
+                               else {
+                                       pmc = i;
+                               }
+                       } else if (abs(lc-clock/2) < tolerance) {
+                               // 32TO
+                               if((i - pmc) == lc) { /* 16T0 was previous one */
+                                       /* It's a PMC ! */
+                                       i += (128+127+16+32+33)-1;
+                                       lastval = i;
+                                       pmc = 0;
+                                       block_done = 1;
+                               }
+                               else if(half_switch == 1) {
+                                       BitStream[bitidx++] = 0;
+                                       half_switch = 0;
+                               }
+                               else
+                                       half_switch++;
+                       } else if (abs(lc-clock) < tolerance) {
+                               // 64TO
+                               BitStream[bitidx++] = 1;
+                       } else {
+                               // Error
+                               warnings++;
+                               if (warnings > 10)
+                               {
+                                       Dbprintf("Error: too many detection errors, aborting.");
+                                       return 0;
+                               }
+                       }
+
+                       if(block_done == 1) {
+                               if(bitidx == 128) {
+                                       for(j=0; j<16; j++) {
+                                               Blocks[num_blocks][j] = 128*BitStream[j*8+7]+
+                                                   64*BitStream[j*8+6]+
+                                                   32*BitStream[j*8+5]+
+                                                   16*BitStream[j*8+4]+
+                                                   8*BitStream[j*8+3]+
+                                                   4*BitStream[j*8+2]+
+                                                   2*BitStream[j*8+1]+
+                                                   BitStream[j*8];
+                                       }
+                                       num_blocks++;
+                               }
+                               bitidx = 0;
+                               block_done = 0;
+                               half_switch = 0;
+                       }
+                       if(i < GraphTraceLen)
+                       {
+                               if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
+                               else dir = 1;
+                       }
+               }
+               if(bitidx==255)
+                       bitidx=0;
+               warnings = 0;
+               if(num_blocks == 4) break;

        }
        memcpy(outBlocks, Blocks, 16*num_blocks);
        return num_blocks;
        }
        memcpy(outBlocks, Blocks, 16*num_blocks);
        return num_blocks;


@@ -1586,18 +1503,18 @@ int DemodPCF7931(uint8_t **outBlocks) {
 int IsBlock0PCF7931(uint8_t *Block) {
        // Assume RFU means 0 :)
        if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled
 int IsBlock0PCF7931(uint8_t *Block) {
        // Assume RFU means 0 :)
        if((memcmp(Block, "\x00\x00\x00\x00\x00\x00\x00\x01", 8) == 0) && memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) // PAC enabled

-    return 1;
+               return 1;

        if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ?
        if((memcmp(Block+9, "\x00\x00\x00\x00\x00\x00\x00", 7) == 0) && Block[7] == 0) // PAC disabled, can it *really* happen ?

-    return 1;
+               return 1;

        return 0;
 }
 
 int IsBlock1PCF7931(uint8_t *Block) {
        // Assume RFU means 0 :)
        if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0)
        return 0;
 }
 
 int IsBlock1PCF7931(uint8_t *Block) {
        // Assume RFU means 0 :)
        if(Block[10] == 0 && Block[11] == 0 && Block[12] == 0 && Block[13] == 0)

-    if((Block[14] & 0x7f) <= 9 && Block[15] <= 9)
-      return 1;
-       
+               if((Block[14] & 0x7f) <= 9 && Block[15] <= 9)
+                       return 1;
+

        return 0;
 }
 
        return 0;
 }
 


@@ -1612,106 +1529,106 @@ void ReadPCF7931() {
        int ident = 0;
        int error = 0;
        int tries = 0;
        int ident = 0;
        int error = 0;
        int tries = 0;

-       
+

        memset(Blocks, 0, 8*17*sizeof(uint8_t));
        memset(Blocks, 0, 8*17*sizeof(uint8_t));

-       
+

        do {
        do {

-    memset(tmpBlocks, 0, 4*16*sizeof(uint8_t));
-    n = DemodPCF7931((uint8_t**)tmpBlocks);
-    if(!n)
-      error++;
-    if(error==10 && num_blocks == 0) {
-      Dbprintf("Error, no tag or bad tag");
-      return;
-    }
-    else if (tries==20 || error==10) {
-      Dbprintf("Error reading the tag");
-      Dbprintf("Here is the partial content");
-      goto end;
-    }
-    
-    for(i=0; i<n; i++)
-      Dbprintf("(dbg) %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
-               tmpBlocks[i][0], tmpBlocks[i][1], tmpBlocks[i][2], tmpBlocks[i][3], tmpBlocks[i][4], tmpBlocks[i][5], tmpBlocks[i][6], tmpBlocks[i][7],
-               tmpBlocks[i][8], tmpBlocks[i][9], tmpBlocks[i][10], tmpBlocks[i][11], tmpBlocks[i][12], tmpBlocks[i][13], tmpBlocks[i][14], tmpBlocks[i][15]);
-    if(!ident) {
-      for(i=0; i<n; i++) {
-        if(IsBlock0PCF7931(tmpBlocks[i])) {
-          // Found block 0 ?
-          if(i < n-1 && IsBlock1PCF7931(tmpBlocks[i+1])) {
-            // Found block 1!
-            // \o/
-            ident = 1;
-            memcpy(Blocks[0], tmpBlocks[i], 16);
-            Blocks[0][ALLOC] = 1;
-            memcpy(Blocks[1], tmpBlocks[i+1], 16);
-            Blocks[1][ALLOC] = 1;
-            max_blocks = max((Blocks[1][14] & 0x7f), Blocks[1][15]) + 1;
-            // Debug print
-            Dbprintf("(dbg) Max blocks: %d", max_blocks);
-            num_blocks = 2;
-            // Handle following blocks
-            for(j=i+2, ind2=2; j!=i; j++, ind2++, num_blocks++) {
-              if(j==n) j=0;
-              if(j==i) break;
-              memcpy(Blocks[ind2], tmpBlocks[j], 16);
-              Blocks[ind2][ALLOC] = 1;
-            }
-            break;
-          }
-        }
-      }
-    }
-    else {
-      for(i=0; i<n; i++) { // Look for identical block in known blocks
-        if(memcmp(tmpBlocks[i], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16)) { // Block is not full of 00
-          for(j=0; j<max_blocks; j++) {
-            if(Blocks[j][ALLOC] == 1 && !memcmp(tmpBlocks[i], Blocks[j], 16)) {
-              // Found an identical block
-              for(ind=i-1,ind2=j-1; ind >= 0; ind--,ind2--) {
-                if(ind2 < 0)
-                  ind2 = max_blocks;
-                if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
-                  // Dbprintf("Tmp %d -> Block %d", ind, ind2);
-                  memcpy(Blocks[ind2], tmpBlocks[ind], 16);
-                  Blocks[ind2][ALLOC] = 1;
-                  num_blocks++;
-                  if(num_blocks == max_blocks) goto end;
-                }
-              }
-              for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) {
-                if(ind2 > max_blocks)
-                  ind2 = 0;
-                if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
-                  // Dbprintf("Tmp %d -> Block %d", ind, ind2);
-                  memcpy(Blocks[ind2], tmpBlocks[ind], 16);
-                  Blocks[ind2][ALLOC] = 1;
-                  num_blocks++;
-                  if(num_blocks == max_blocks) goto end;
-                }
-              }
-            }
-          }
-        }
-      }
-    }
-    tries++;
-    if (BUTTON_PRESS()) return;
+               memset(tmpBlocks, 0, 4*16*sizeof(uint8_t));
+               n = DemodPCF7931((uint8_t**)tmpBlocks);
+               if(!n)
+                       error++;
+               if(error==10 && num_blocks == 0) {
+                       Dbprintf("Error, no tag or bad tag");
+                       return;
+               }
+               else if (tries==20 || error==10) {
+                       Dbprintf("Error reading the tag");
+                       Dbprintf("Here is the partial content");
+                       goto end;
+               }
+
+               for(i=0; i<n; i++)
+                       Dbprintf("(dbg) %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
+                           tmpBlocks[i][0], tmpBlocks[i][1], tmpBlocks[i][2], tmpBlocks[i][3], tmpBlocks[i][4], tmpBlocks[i][5], tmpBlocks[i][6], tmpBlocks[i][7],
+                           tmpBlocks[i][8], tmpBlocks[i][9], tmpBlocks[i][10], tmpBlocks[i][11], tmpBlocks[i][12], tmpBlocks[i][13], tmpBlocks[i][14], tmpBlocks[i][15]);
+               if(!ident) {
+                       for(i=0; i<n; i++) {
+                               if(IsBlock0PCF7931(tmpBlocks[i])) {
+                                       // Found block 0 ?
+                                       if(i < n-1 && IsBlock1PCF7931(tmpBlocks[i+1])) {
+                                               // Found block 1!
+                                               // \o/
+                                               ident = 1;
+                                               memcpy(Blocks[0], tmpBlocks[i], 16);
+                                               Blocks[0][ALLOC] = 1;
+                                               memcpy(Blocks[1], tmpBlocks[i+1], 16);
+                                               Blocks[1][ALLOC] = 1;
+                                               max_blocks = max((Blocks[1][14] & 0x7f), Blocks[1][15]) + 1;
+                                               // Debug print
+                                               Dbprintf("(dbg) Max blocks: %d", max_blocks);
+                                               num_blocks = 2;
+                                               // Handle following blocks
+                                               for(j=i+2, ind2=2; j!=i; j++, ind2++, num_blocks++) {
+                                                       if(j==n) j=0;
+                                                       if(j==i) break;
+                                                       memcpy(Blocks[ind2], tmpBlocks[j], 16);
+                                                       Blocks[ind2][ALLOC] = 1;
+                                               }
+                                               break;
+                                       }
+                               }
+                       }
+               }
+               else {
+                       for(i=0; i<n; i++) { // Look for identical block in known blocks
+                               if(memcmp(tmpBlocks[i], "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16)) { // Block is not full of 00
+                                       for(j=0; j<max_blocks; j++) {
+                                               if(Blocks[j][ALLOC] == 1 && !memcmp(tmpBlocks[i], Blocks[j], 16)) {
+                                                       // Found an identical block
+                                                       for(ind=i-1,ind2=j-1; ind >= 0; ind--,ind2--) {
+                                                               if(ind2 < 0)
+                                                                       ind2 = max_blocks;
+                                                               if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
+                                                                       // Dbprintf("Tmp %d -> Block %d", ind, ind2);
+                                                                       memcpy(Blocks[ind2], tmpBlocks[ind], 16);
+                                                                       Blocks[ind2][ALLOC] = 1;
+                                                                       num_blocks++;
+                                                                       if(num_blocks == max_blocks) goto end;
+                                                               }
+                                                       }
+                                                       for(ind=i+1,ind2=j+1; ind < n; ind++,ind2++) {
+                                                               if(ind2 > max_blocks)
+                                                                       ind2 = 0;
+                                                               if(!Blocks[ind2][ALLOC]) { // Block ind2 not already found
+                                                                       // Dbprintf("Tmp %d -> Block %d", ind, ind2);
+                                                                       memcpy(Blocks[ind2], tmpBlocks[ind], 16);
+                                                                       Blocks[ind2][ALLOC] = 1;
+                                                                       num_blocks++;
+                                                                       if(num_blocks == max_blocks) goto end;
+                                                               }
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+               }
+               tries++;
+               if (BUTTON_PRESS()) return;

        } while (num_blocks != max_blocks);
 end:
        Dbprintf("-----------------------------------------");
        Dbprintf("Memory content:");
        Dbprintf("-----------------------------------------");
        for(i=0; i<max_blocks; i++) {
        } while (num_blocks != max_blocks);
 end:
        Dbprintf("-----------------------------------------");
        Dbprintf("Memory content:");
        Dbprintf("-----------------------------------------");
        for(i=0; i<max_blocks; i++) {

-    if(Blocks[i][ALLOC]==1)
-      Dbprintf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
-               Blocks[i][0], Blocks[i][1], Blocks[i][2], Blocks[i][3], Blocks[i][4], Blocks[i][5], Blocks[i][6], Blocks[i][7],
-               Blocks[i][8], Blocks[i][9], Blocks[i][10], Blocks[i][11], Blocks[i][12], Blocks[i][13], Blocks[i][14], Blocks[i][15]);
-    else
-      Dbprintf("<missing block %d>", i);
+               if(Blocks[i][ALLOC]==1)
+                       Dbprintf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
+                           Blocks[i][0], Blocks[i][1], Blocks[i][2], Blocks[i][3], Blocks[i][4], Blocks[i][5], Blocks[i][6], Blocks[i][7],
+                           Blocks[i][8], Blocks[i][9], Blocks[i][10], Blocks[i][11], Blocks[i][12], Blocks[i][13], Blocks[i][14], Blocks[i][15]);
+               else
+                       Dbprintf("<missing block %d>", i);

        }
        Dbprintf("-----------------------------------------");
        }
        Dbprintf("-----------------------------------------");

-       
+

        return ;
 }
 
        return ;
 }
 


@@ -1736,20 +1653,20 @@ uint8_t * fwd_write_ptr; //forwardlink bit pointer
 //====================================================================
 //--------------------------------------------------------------------
 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++ = cmd;
-  cmd >>= 1;
-  *forward_ptr++ = cmd;
-  cmd >>= 1;
-  *forward_ptr++ = cmd;
-  cmd >>= 1;
-  *forward_ptr++ = cmd;
-  
-  return 6; //return number of emited bits
+       //--------------------------------------------------------------------
+
+       *forward_ptr++ = 0; //start bit
+       *forward_ptr++ = 0; //second pause for 4050 code
+
+       *forward_ptr++ = cmd;
+       cmd >>= 1;
+       *forward_ptr++ = cmd;
+       cmd >>= 1;
+       *forward_ptr++ = cmd;
+       cmd >>= 1;
+       *forward_ptr++ = cmd;
+
+       return 6; //return number of emited bits

 }
 
 //====================================================================
 }
 
 //====================================================================


@@ -1759,21 +1676,21 @@ uint8_t Prepare_Cmd( uint8_t cmd ) {
 
 //--------------------------------------------------------------------
 uint8_t Prepare_Addr( uint8_t addr ) {
 
 //--------------------------------------------------------------------
 uint8_t Prepare_Addr( uint8_t addr ) {

-  //--------------------------------------------------------------------
-  
-  register uint8_t line_parity;
-  
-  uint8_t i;
-  line_parity = 0;
-  for(i=0;i<6;i++) {
-    *forward_ptr++ = addr;
-    line_parity ^= addr;
-    addr >>= 1;
-  }
-  
-  *forward_ptr++ = (line_parity & 1);
-  
-  return 7; //return number of emited bits
+       //--------------------------------------------------------------------
+
+       register uint8_t line_parity;
+
+       uint8_t i;
+       line_parity = 0;
+       for(i=0;i<6;i++) {
+               *forward_ptr++ = addr;
+               line_parity ^= addr;
+               addr >>= 1;
+       }
+
+       *forward_ptr++ = (line_parity & 1);
+
+       return 7; //return number of emited bits

 }
 
 //====================================================================
 }
 
 //====================================================================


@@ -1783,36 +1700,36 @@ uint8_t Prepare_Addr( uint8_t addr ) {
 
 //--------------------------------------------------------------------
 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 i, j;
-  register uint16_t data;
-  
-  data = data_low;
-  column_parity = 0;
-  
-  for(i=0; i<4; i++) {
-    line_parity = 0;
-    for(j=0; j<8; j++) {
-      line_parity ^= data;
-      column_parity ^= (data & 1) << j;
-      *forward_ptr++ = data;
-      data >>= 1;
-    }
-    *forward_ptr++ = line_parity;
-    if(i == 1)
-      data = data_hi;
-  }
-  
-  for(j=0; j<8; j++) {
-    *forward_ptr++ = column_parity;
-    column_parity >>= 1;
-  }
-  *forward_ptr = 0;
-  
-  return 45; //return number of emited bits
+       //--------------------------------------------------------------------
+
+       register uint8_t line_parity;
+       register uint8_t column_parity;
+       register uint8_t i, j;
+       register uint16_t data;
+
+       data = data_low;
+       column_parity = 0;
+
+       for(i=0; i<4; i++) {
+               line_parity = 0;
+               for(j=0; j<8; j++) {
+                       line_parity ^= data;
+                       column_parity ^= (data & 1) << j;
+                       *forward_ptr++ = data;
+                       data >>= 1;
+               }
+               *forward_ptr++ = line_parity;
+               if(i == 1)
+                       data = data_hi;
+       }
+
+       for(j=0; j<8; j++) {
+               *forward_ptr++ = column_parity;
+               column_parity >>= 1;
+       }
+       *forward_ptr = 0;
+
+       return 45; //return number of emited bits

 }
 
 //====================================================================
 }
 
 //====================================================================


@@ -1821,115 +1738,115 @@ uint8_t Prepare_Data( uint16_t data_low, uint16_t data_hi) {
 // fwd_bit_count set with number of bits to be sent
 //====================================================================
 void SendForward(uint8_t fwd_bit_count) {
 // fwd_bit_count set with number of bits to be sent
 //====================================================================
 void SendForward(uint8_t fwd_bit_count) {

-  
-  fwd_write_ptr = forwardLink_data;
-  fwd_bit_sz = fwd_bit_count;
-  
-  LED_D_ON();
-  
-  //Field on
-  FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
-  FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
-  FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
-  
-  // Give it a bit of time for the resonant antenna to settle.
-  // And for the tag to fully power up
-  SpinDelay(150);
-  
-  // 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
-  FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
-  SpinDelayUs(16*8); //16 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)
-    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
-      FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
-      SpinDelayUs(9*8); //16 cycles on (8us each)
-    }
-  }
+
+       fwd_write_ptr = forwardLink_data;
+       fwd_bit_sz = fwd_bit_count;
+
+       LED_D_ON();
+
+       //Field on
+       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+
+       // Give it a bit of time for the resonant antenna to settle.
+       // And for the tag to fully power up
+       SpinDelay(150);
+
+       // 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
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
+       SpinDelayUs(16*8); //16 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)
+               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
+                       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
+                       SpinDelayUs(9*8); //16 cycles on (8us each)
+               }
+       }

 }
 
 void EM4xLogin(uint32_t Password) {
 }
 
 void EM4xLogin(uint32_t Password) {

-  
-  uint8_t fwd_bit_count;
-  
-  forward_ptr = forwardLink_data;
-  fwd_bit_count = Prepare_Cmd( FWD_CMD_LOGIN );
-  fwd_bit_count += Prepare_Data( Password&0xFFFF, Password>>16 );
-  
-  SendForward(fwd_bit_count);
-  
-  //Wait for command to complete
-  SpinDelay(20);
-  
+
+       uint8_t fwd_bit_count;
+
+       forward_ptr = forwardLink_data;
+       fwd_bit_count = Prepare_Cmd( FWD_CMD_LOGIN );
+       fwd_bit_count += Prepare_Data( Password&0xFFFF, Password>>16 );
+
+       SendForward(fwd_bit_count);
+
+       //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) {

-  
-  uint8_t fwd_bit_count;
-  uint8_t *dest = (uint8_t *)BigBuf;
-  int m=0, i=0;
-  
-  //If password mode do login
-  if (PwdMode == 1) EM4xLogin(Pwd);
-  
-  forward_ptr = forwardLink_data;
-  fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );
-  fwd_bit_count += Prepare_Addr( Address );
-  
-  m = sizeof(BigBuf);
-  // Clear destination buffer before sending the command
-  memset(dest, 128, m);
-  // 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);
-  
-  // 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 >= m) break;
-    }
-  }
-  FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-  LED_D_OFF();
+
+       uint8_t fwd_bit_count;
+       uint8_t *dest = (uint8_t *)BigBuf;
+       int m=0, i=0;
+
+       //If password mode do login
+       if (PwdMode == 1) EM4xLogin(Pwd);
+
+       forward_ptr = forwardLink_data;
+       fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );
+       fwd_bit_count += Prepare_Addr( Address );
+
+       m = sizeof(BigBuf);
+       // Clear destination buffer before sending the command
+       memset(dest, 128, m);
+       // 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);
+
+       // 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 >= m) break;
+               }
+       }
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+       LED_D_OFF();

 }
 
 void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 }
 
 void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {

-  
-  uint8_t fwd_bit_count;
-  
-  //If password mode do login
-  if (PwdMode == 1) EM4xLogin(Pwd);
-  
-  forward_ptr = forwardLink_data;
-  fwd_bit_count = Prepare_Cmd( FWD_CMD_WRITE );
-  fwd_bit_count += Prepare_Addr( Address );
-  fwd_bit_count += Prepare_Data( Data&0xFFFF, Data>>16 );
-  
-  SendForward(fwd_bit_count);
-  
-  //Wait for write to complete
-  SpinDelay(20);
-  FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
-  LED_D_OFF();
+
+       uint8_t fwd_bit_count;
+
+       //If password mode do login
+       if (PwdMode == 1) EM4xLogin(Pwd);
+
+       forward_ptr = forwardLink_data;
+       fwd_bit_count = Prepare_Cmd( FWD_CMD_WRITE );
+       fwd_bit_count += Prepare_Addr( Address );
+       fwd_bit_count += Prepare_Data( Data&0xFFFF, Data>>16 );
+
+       SendForward(fwd_bit_count);
+
+       //Wait for write to complete
+       SpinDelay(20);
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
+       LED_D_OFF();

 }
 }