CHG: spelling errors, added help texts in cmdhfmfu.c

[proxmark3-svn] / armsrc / lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index e086a7174d3e252bf21909ab46fc764e9bc6b121..08bae44db615faa756450813062e404923dd7eaf 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -11,11 +11,21 @@
 #include "../include/proxmark3.h"
 #include "apps.h"
 #include "util.h"
 #include "../include/proxmark3.h"
 #include "apps.h"
 #include "util.h"

-#include "../include/hitag2.h"

 #include "../common/crc16.h"
 #include "../common/crc16.h"

+#include "../common/lfdemod.h"

 #include "string.h"
 #include "crapto1.h"
 #include "string.h"
 #include "crapto1.h"

-#include "mifareutil.h"
+#include "mifareutil.h"        
+#include "../include/hitag2.h"
+
+// Sam7s has several timers, we will use the source TIMER_CLOCK1 (aka AT91C_TC_CLKS_TIMER_DIV1_CLOCK)
+// TIMER_CLOCK1 = MCK/2, MCK is running at 48 MHz, Timer is running at 48/2 = 24 MHz
+// Hitag units (T0) have duration of 8 microseconds (us), which is 1/125000 per second (carrier)
+// T0 = TIMER_CLOCK1 / 125000 = 192
+#define T0 192
+
+#define SHORT_COIL()   LOW(GPIO_SSC_DOUT)
+#define OPEN_COIL()            HIGH(GPIO_SSC_DOUT)

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


@@ -42,24 +52,22 @@ void LFSetupFPGAForADC(int divisor, bool lf_field)
 void AcquireRawAdcSamples125k(int divisor)
 {
        LFSetupFPGAForADC(divisor, true);
 void AcquireRawAdcSamples125k(int divisor)
 {
        LFSetupFPGAForADC(divisor, true);

-       DoAcquisition125k(-1);
+       DoAcquisition125k();

 }
 
 void SnoopLFRawAdcSamples(int divisor, int trigger_threshold)
 {
        LFSetupFPGAForADC(divisor, false);
 }
 
 void SnoopLFRawAdcSamples(int divisor, int trigger_threshold)
 {
        LFSetupFPGAForADC(divisor, false);

-       DoAcquisition125k(trigger_threshold);
+       DoAcquisition125k_threshold(trigger_threshold);

 }
 
 // split into two routines so we can avoid timing issues after sending commands //
 }
 
 // split into two routines so we can avoid timing issues after sending commands //

-void DoAcquisition125k(int trigger_threshold)
+void DoAcquisition125k_internal(int trigger_threshold, bool silent)

 {
 {

-       uint8_t *dest =  mifare_get_bigbufptr();
-       int n = 8000;
-       int i;
+       uint8_t *dest = (uint8_t *)BigBuf;
+       uint16_t i = 0;
+       memset(dest, 0x00, BIGBUF_SIZE);

 
 

-       memset(dest, 0x00, n);
-       i = 0;

        for(;;) {
                if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
                        AT91C_BASE_SSC->SSC_THR = 0x43;
        for(;;) {
                if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
                        AT91C_BASE_SSC->SSC_THR = 0x43;


@@ -72,39 +80,37 @@ void DoAcquisition125k(int trigger_threshold)
                                continue;
                        else
                                trigger_threshold = -1;
                                continue;
                        else
                                trigger_threshold = -1;

-                       if (++i >= n) break;
+                       if (++i >= BIGBUF_SIZE) break;

                }
        }
                }
        }

-       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]);

-                       
+       }

 }
 }

-
+void DoAcquisition125k_threshold(int trigger_threshold) {
+        DoAcquisition125k_internal(trigger_threshold, true);
+}
+void DoAcquisition125k() {
+        DoAcquisition125k_internal(-1, true);
+}      
+       

 void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, uint8_t *command)
 {
 void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, uint8_t *command)
 {

-       int at134khz;
-
-       /* Make sure the tag is reset */

        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

+       
+       /* Make sure the tag is reset */

        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelay(2500);
 
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        SpinDelay(2500);
 

+       int divisor = 95; // 125 KHz

        // see if 'h' was specified
        if (command[strlen((char *) command) - 1] == 'h')
        // see if 'h' was specified
        if (command[strlen((char *) command) - 1] == 'h')

-               at134khz = TRUE;
-       else
-               at134khz = FALSE;
-
-       if (at134khz)
-               FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
-       else
-               FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+               divisor = 88; // 134.8 KHz

 
 

+       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor); 

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

-

        // Give it a bit of time for the resonant antenna to settle.
        // Give it a bit of time for the resonant antenna to settle.

-       SpinDelay(50);
-       // And a little more time for the tag to fully power up

        SpinDelay(2000);
 
        // Now set up the SSC to get the ADC samples that are now streaming at us.
        SpinDelay(2000);
 
        // Now set up the SSC to get the ADC samples that are now streaming at us.


@@ -115,10 +121,7 @@ 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);

-               if (at134khz)
-                       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
-               else
-                       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+               FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor); 

 
                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();


@@ -130,11 +133,7 @@ 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);

-       if (at134khz)
-               FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
-       else
-               FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
-
+       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor); 

        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
 
        // now do the read
        FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
 
        // now do the read


@@ -162,8 +161,6 @@ void ReadTItag(void)
 
        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;


@@ -292,17 +289,17 @@ void WriteTIbyte(uint8_t b)
        {
                if (b&(1<<i)) {
                        // stop modulating antenna
        {
                if (b&(1<<i)) {
                        // stop modulating antenna

-                       LOW(GPIO_SSC_DOUT);
+                       SHORT_COIL();

                        SpinDelayUs(1000);
                        // modulate antenna
                        SpinDelayUs(1000);
                        // modulate antenna

-                       HIGH(GPIO_SSC_DOUT);
+                       OPEN_COIL();

                        SpinDelayUs(1000);
                } else {
                        // stop modulating antenna
                        SpinDelayUs(1000);
                } else {
                        // stop modulating antenna

-                       LOW(GPIO_SSC_DOUT);
+                       SHORT_COIL();

                        SpinDelayUs(300);
                        // modulate antenna
                        SpinDelayUs(300);
                        // modulate antenna

-                       HIGH(GPIO_SSC_DOUT);
+                       OPEN_COIL();

                        SpinDelayUs(1700);
                }
        }
                        SpinDelayUs(1700);
                }
        }


@@ -450,60 +447,166 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
        DbpString("Now use tiread to check");
 }
 
        DbpString("Now use tiread to check");
 }
 

-void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
+
+        
+// PIO_CODR = Clear Output Data Register
+// PIO_SODR = Set Output Data Register
+//#define LOW(x)        AT91C_BASE_PIOA->PIO_CODR = (x)
+//#define HIGH(x)       AT91C_BASE_PIOA->PIO_SODR = (x)
+void SimulateTagLowFrequency( uint16_t period, uint32_t gap, uint8_t ledcontrol)

 {
 {

-       int i;
-       uint8_t *tab = (uint8_t *)BigBuf;
-    
+       LED_D_ON();
+
+       uint16_t i = 0;
+       uint8_t send = 0;
+       
+       //int overflow = 0;
+       uint8_t *buf = (uint8_t *)BigBuf;
+

        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
        FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

-       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
-    
-       AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;
-    
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_READER_FIELD); 
+       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+       SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
+       RELAY_OFF();
+       
+       // Configure output pin that is connected to the FPGA (for modulating)

        AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
        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)
-    
-       i = 0;
-       for(;;) {
-               while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {
-                       if(BUTTON_PRESS()) {
-                               DbpString("Stopped");
-                               return;
+       AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT;
+
+       SHORT_COIL();
+
+       // Enable Peripheral Clock for TIMER_CLOCK0, used to measure exact timing before answering
+       AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_TC0);
+       
+       // Enable Peripheral Clock for TIMER_CLOCK1, used to capture edges of the reader frames
+       AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_TC1);
+       AT91C_BASE_PIOA->PIO_BSR = GPIO_SSC_FRAME;
+       
+    // Disable timer during configuration      
+       AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS;
+       
+       // Capture mode, default timer source = MCK/2 (TIMER_CLOCK1), TIOA is external trigger,
+       // external trigger rising edge, load RA on rising edge of TIOA.
+       AT91C_BASE_TC1->TC_CMR = AT91C_TC_CLKS_TIMER_DIV1_CLOCK | AT91C_TC_ETRGEDG_RISING | AT91C_TC_ABETRG | AT91C_TC_LDRA_RISING;
+       
+       // Enable and reset counter
+       //AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+       AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+
+       while(!BUTTON_PRESS()) { 
+               WDT_HIT();
+               
+               // Receive frame, watch for at most T0*EOF periods
+               while (AT91C_BASE_TC1->TC_CV < T0 * 55) {
+
+               // Check if rising edge in modulation is detected
+                       if(AT91C_BASE_TC1->TC_SR & AT91C_TC_LDRAS) {
+                               // Retrieve the new timing values 
+                               //int ra = (AT91C_BASE_TC1->TC_RA/T0) + overflow;
+                               //Dbprintf("Timing value - %d  %d", ra, overflow);
+                               //overflow = 0;
+
+                               // Reset timer every frame, we have to capture the last edge for timing
+                               AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+                               send = 1;
+                               
+                               LED_B_ON();

                        }
                        }

-                       WDT_HIT();
-               }
-        
-               if (ledcontrol)
-                       LED_D_ON();
-        
-               if(tab[i])
-                       OPEN_COIL();
-               else
-                       SHORT_COIL();
-        
-               if (ledcontrol)
-                       LED_D_OFF();
-        
-               while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {
-                       if(BUTTON_PRESS()) {
-                               DbpString("Stopped");
-                               return;
+               } 
+
+               if ( send ) {
+                       // Disable timer 1 with external trigger to avoid triggers during our own modulation
+                       AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS;
+                       
+                       // Wait for HITAG_T_WAIT_1 carrier periods after the last reader bit,
+                       // not that since the clock counts since the rising edge, but T_Wait1 is
+                       // with respect to the falling edge, we need to wait actually (T_Wait1 - T_Low)
+                       // periods. The gap time T_Low varies (4..10). All timer values are in 
+                       // terms of T0 units
+                       while(AT91C_BASE_TC0->TC_CV < T0 * 16  );
+                       
+                       // datat kommer in som 1 bit för varje position i arrayn
+                       for(i = 0; i < period; ++i) {
+                               
+                               // Reset clock for the next bit 
+                               AT91C_BASE_TC0->TC_CCR = AT91C_TC_SWTRG;
+
+                               if ( buf[i] > 0 )
+                                       HIGH(GPIO_SSC_DOUT);
+                               else
+                                       LOW(GPIO_SSC_DOUT);
+                               
+                               while(AT91C_BASE_TC0->TC_CV < T0 * 1 );

                        }
                        }

-                       WDT_HIT();
+                       // Drop modulation
+                       LOW(GPIO_SSC_DOUT);
+                                                       
+                       // Enable and reset external trigger in timer for capturing future frames
+                       AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
+                       LED_B_OFF();

                }
                }

-        
-               i++;
-               if(i == period) {
-                       i = 0;
-                       if (gap) {
-                               SHORT_COIL();
-                               SpinDelayUs(gap);
+               
+               send = 0;
+               
+               // Save the timer overflow, will be 0 when frame was received
+               //overflow += (AT91C_BASE_TC1->TC_CV/T0);
+               
+               // Reset the timer to restart while-loop that receives frames
+               AT91C_BASE_TC1->TC_CCR = AT91C_TC_SWTRG;
+       }
+       
+       LED_B_OFF();
+       LED_D_OFF();
+       AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS;
+       AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS;
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+       
+       DbpString("Sim Stopped");
+}
+
+
+void SimulateTagLowFrequencyA(int len, int gap)
+{
+       uint8_t *buf = (uint8_t *)BigBuf;
+
+       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_TOGGLE_MODE); // new izsh toggle mode!
+       
+       // 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();
+       SpinDelay(5);
+       
+       AT91C_BASE_SSC->SSC_THR = 0x00;
+       
+       int i = 0;
+       while(!BUTTON_PRESS()) { 
+               WDT_HIT();
+               if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
+                       
+                       if ( buf[i] > 0 )
+                               AT91C_BASE_SSC->SSC_THR = 0x43;
+                       else
+                               AT91C_BASE_SSC->SSC_THR = 0x00;
+
+                       ++i;
+                       LED_A_ON();
+                       if (i >= len){
+                               i = 0;

                        }
                }
                        }
                }

+               
+               if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {
+                       volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;
+                       (void)r;
+                       LED_A_OFF();
+               }

        }
        }

+       DbpString("lf simulate stopped");
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

 }
 
 #define DEBUG_FRAME_CONTENTS 1
 }
 
 #define DEBUG_FRAME_CONTENTS 1


@@ -512,12 +615,12 @@ void SimulateTagLowFrequencyBidir(int divisor, int t0)
 }
 
 // compose fc/8 fc/10 waveform
 }
 
 // compose fc/8 fc/10 waveform

-static void fc(int c, int *n) {
+static void fc(int c, uint16_t *n) {

        uint8_t *dest = (uint8_t *)BigBuf;
        int idx;
 
        // for when we want an fc8 pattern every 4 logical bits
        uint8_t *dest = (uint8_t *)BigBuf;
        int idx;
 
        // for when we want an fc8 pattern every 4 logical bits

-       if(c==0) {
+       if(c == 0) {

                dest[((*n)++)]=1;
                dest[((*n)++)]=1;
                dest[((*n)++)]=0;
                dest[((*n)++)]=1;
                dest[((*n)++)]=1;
                dest[((*n)++)]=0;


@@ -528,7 +631,7 @@ static void fc(int c, int *n) {
                dest[((*n)++)]=0;
        }
        //      an fc/8  encoded bit is a bit pattern of  11000000  x6 = 48 samples
                dest[((*n)++)]=0;
        }
        //      an fc/8  encoded bit is a bit pattern of  11000000  x6 = 48 samples

-       if(c==8) {
+       if(c == 8) {

                for (idx=0; idx<6; idx++) {
                        dest[((*n)++)]=1;
                        dest[((*n)++)]=1;
                for (idx=0; idx<6; idx++) {
                        dest[((*n)++)]=1;
                        dest[((*n)++)]=1;


@@ -542,8 +645,8 @@ static void fc(int c, int *n) {
        }
 
        //      an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples
        }
 
        //      an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples

-       if(c==10) {
-               for (idx=0; idx<5; idx++) {
+       if(c == 10) {
+               for (idx = 0; idx < 5; idx++) {

                        dest[((*n)++)]=1;
                        dest[((*n)++)]=1;
                        dest[((*n)++)]=1;
                        dest[((*n)++)]=1;
                        dest[((*n)++)]=1;
                        dest[((*n)++)]=1;


@@ -560,9 +663,9 @@ static void fc(int c, int *n) {
 
 // prepare a waveform pattern in the buffer based on the ID given then
 // simulate a HID tag until the button is pressed
 
 // prepare a waveform pattern in the buffer based on the ID given then
 // simulate a HID tag until the button is pressed

-void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
+void CmdHIDsimTAG(int hi, int lo, uint8_t ledcontrol)

 {
 {

-       int n=0, i=0;
+       uint16_t n = 0, i = 0;

        /*
         HID tag bitstream format
         The tag contains a 44bit unique code. This is sent out MSB first in sets of 4 bits
        /*
         HID tag bitstream format
         The tag contains a 44bit unique code. This is sent out MSB first in sets of 4 bits


@@ -573,11 +676,11 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
         nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10)
        */
 
         nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10)
        */
 

-       if (hi>0xFFF) {
+       if (hi > 0xFFF) {

                DbpString("Tags can only have 44 bits.");
                return;
        }
                DbpString("Tags can only have 44 bits.");
                return;
        }

-       fc(0,&n);
+       fc(0, &n);

        // special start of frame marker containing invalid bit sequences
        fc(8,  &n);     fc(8,  &n);     // invalid
        fc(8,  &n);     fc(10, &n); // logical 0
        // special start of frame marker containing invalid bit sequences
        fc(8,  &n);     fc(8,  &n);     // invalid
        fc(8,  &n);     fc(10, &n); // logical 0


@@ -586,9 +689,9 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
 
        WDT_HIT();
        // manchester encode bits 43 to 32
 
        WDT_HIT();
        // manchester encode bits 43 to 32

-       for (i=11; i>=0; i--) {
-               if ((i%4)==3) fc(0,&n);
-               if ((hi>>i)&1) {
+       for (i = 11; i >= 0; i--) {
+               if ((i % 4) == 3) fc(0, &n);
+               if ((hi >> i) & 1) {

                        fc(10, &n);     fc(8,  &n);             // low-high transition
                } else {
                        fc(8,  &n);     fc(10, &n);             // high-low transition
                        fc(10, &n);     fc(8,  &n);             // low-high transition
                } else {
                        fc(8,  &n);     fc(10, &n);             // high-low transition


@@ -597,9 +700,9 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
 
        WDT_HIT();
        // manchester encode bits 31 to 0
 
        WDT_HIT();
        // manchester encode bits 31 to 0

-       for (i=31; i>=0; i--) {
-               if ((i%4)==3) fc(0,&n);
-               if ((lo>>i)&1) {
+       for (i = 31; i >= 0; i--) {
+               if ((i % 4 ) == 3) fc(0, &n);
+               if ((lo >> i ) & 1) {

                        fc(10, &n);     fc(8,  &n);             // low-high transition
                } else {
                        fc(8,  &n);     fc(10, &n);             // high-low transition
                        fc(10, &n);     fc(8,  &n);             // low-high transition
                } else {
                        fc(8,  &n);     fc(10, &n);             // high-low transition


@@ -608,394 +711,223 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
 
        if (ledcontrol)
                LED_A_ON();
 
        if (ledcontrol)
                LED_A_ON();

+       

        SimulateTagLowFrequency(n, 0, ledcontrol);
 
        if (ledcontrol)
                LED_A_OFF();
 }
 
        SimulateTagLowFrequency(n, 0, ledcontrol);
 
        if (ledcontrol)
                LED_A_OFF();
 }
 

-
-// 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;

-       int m=0, n=0, i=0, idx=0, found=0, lastval=0;
-  uint32_t hi2=0, hi=0, lo=0;
+       uint32_t hi2 = 0, hi = 0, lo = 0;

 
 

-       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
-       FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
-       FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
-
-       // Connect the A/D to the peak-detected low-frequency path.
-       SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
-
-       // Give it a bit of time for the resonant antenna to settle.
-       SpinDelay(50);
+       // Configure to go in 125Khz listen mode
+       LFSetupFPGAForADC(0, true);

 
 

-       // Now set up the SSC to get the ADC samples that are now streaming at us.
-       FpgaSetupSsc();
+       while(!BUTTON_PRESS()) {

 
 

-       for(;;) {

                WDT_HIT();
                WDT_HIT();

-               if (ledcontrol)
-                       LED_A_ON();
-               if(BUTTON_PRESS()) {
-                       DbpString("Stopped");
-                       if (ledcontrol)
-                               LED_A_OFF();
-                       return;
-               }
+               if (ledcontrol) LED_A_ON();

 
 

-               i = 0;
-               m = sizeof(BigBuf);
-               memset(dest,128,m);
-               for(;;) {
-                       if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
-                               AT91C_BASE_SSC->SSC_THR = 0x43;
-                               if (ledcontrol)
-                                       LED_D_ON();
-                       }
-                       if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-                               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;
-                               i++;
-                               if (ledcontrol)
-                                       LED_D_OFF();
-                               if(i >= m) {
-                                       break;
-                               }
-                       }
-               }
+               DoAcquisition125k_internal(-1,true);

 
                // FSK demodulator
 
                // FSK demodulator

+               int bitLen = HIDdemodFSK(dest,BIGBUF_SIZE,&hi2,&hi,&lo);

 
 

-               // sync to first lo-hi transition
-               for( idx=1; idx<m; idx++) {
-                       if (dest[idx-1]<dest[idx])
-                               lastval=idx;
-                               break;
-               }

                WDT_HIT();
 
                WDT_HIT();
 

-               // 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( i=0; idx<m; idx++) {
-                       if (dest[idx-1]<dest[idx]) {
-                               dest[i]=idx-lastval;
-                               if (dest[i] <= 8) {
-                                               dest[i]=1;
-                               } else {
-                                               dest[i]=0;
-                               }
-
-                               lastval=idx;
-                               i++;
-                       }
-               }
-               m=i;
-               WDT_HIT();
-
-               // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns
-               lastval=dest[0];
-               idx=0;
-               i=0;
-               n=0;
-               for( idx=0; idx<m; idx++) {
-                       if (dest[idx]==lastval) {
-                               n++;
-                       } else {
-                               // a bit time is five fc/10 or six fc/8 cycles so figure out how many bits a pattern width represents,
-                               // an extra fc/8 pattern preceeds every 4 bits (about 200 cycles) just to complicate things but it gets
-                               // swallowed up by rounding
-                               // expected results are 1 or 2 bits, any more and it's an invalid manchester encoding
-                               // special start of frame markers use invalid manchester states (no transitions) by using sequences
-                               // like 111000
-                               if (dest[idx-1]) {
-                                       n=(n+1)/6;                      // fc/8 in sets of 6
-                               } else {
-                                       n=(n+1)/5;                      // fc/10 in sets of 5
-                               }
-                               switch (n) {                    // stuff appropriate bits in buffer
-                                       case 0:
-                                       case 1: // one bit
-                                               dest[i++]=dest[idx-1];
-                                               break;
-                                       case 2: // two bits
-                                               dest[i++]=dest[idx-1];
-                                               dest[i++]=dest[idx-1];
-                                               break;
-                                       case 3: // 3 bit start of frame markers
-                                               dest[i++]=dest[idx-1];
-                                               dest[i++]=dest[idx-1];
-                                               dest[i++]=dest[idx-1];
-                                               break;
-                                       // When a logic 0 is immediately followed by the start of the next transmisson
-                                       // (special pattern) a pattern of 4 bit duration lengths is created.
-                                       case 4:
-                                               dest[i++]=dest[idx-1];
-                                               dest[i++]=dest[idx-1];
-                                               dest[i++]=dest[idx-1];
-                                               dest[i++]=dest[idx-1];
-                                               break;
-                                       default:        // this shouldn't happen, don't stuff any bits
-                                               break;
-                               }
-                               n=0;
-                               lastval=dest[idx];
-                       }
-               }
-               m=i;
-               WDT_HIT();
+               if (bitLen > 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
 
                // 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

-               for( idx=0; idx<m-6; idx++) {
-                       // search for a start of frame marker
-                       if ( dest[idx] && dest[idx+1] && dest[idx+2] && (!dest[idx+3]) && (!dest[idx+4]) && (!dest[idx+5]) )
-                       {
-                               found=1;
-                               idx+=6;
-        if (found && (hi2|hi|lo)) {
-          if (hi2 != 0){
-            Dbprintf("TAG ID: %x%08x%08x (%d)",
-                     (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
-          }
-          else {
-            Dbprintf("TAG ID: %x%08x (%d)",
-                     (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
-          }
-                                       /* if we're only looking for one tag */
-                                       if (findone)
-                                       {
-                                               *high = hi;
-                                               *low = lo;
-                                               return;
+
+                       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
+                               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);

                                        }
                                        }

-          hi2=0;
-                                       hi=0;
-                                       lo=0;
-                                       found=0;
-                               }
-                       }
-                       if (found) {
-                               if (dest[idx] && (!dest[idx+1]) ) {
-          hi2=(hi2<<1)|(hi>>31);
-                                       hi=(hi<<1)|(lo>>31);
-                                       lo=(lo<<1)|0;
-                               } else if ( (!dest[idx]) && dest[idx+1]) {
-          hi2=(hi2<<1)|(hi>>31);
-                                       hi=(hi<<1)|(lo>>31);
-                                       lo=(lo<<1)|1;
-                               } else {
-                                       found=0;
-          hi2=0;
-                                       hi=0;
-                                       lo=0;

                                }
                                }

-                               idx++;
-                       }
-                       if ( dest[idx] && dest[idx+1] && dest[idx+2] && (!dest[idx+3]) && (!dest[idx+4]) && (!dest[idx+5]) )
-                       {
-                               found=1;
-                               idx+=6;
-                               if (found && (hi|lo)) {
-          if (hi2 != 0){
-            Dbprintf("TAG ID: %x%08x%08x (%d)",
-                     (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
-          }
-          else {
-            Dbprintf("TAG ID: %x%08x (%d)",
-                     (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
-          }
-                                       /* if we're only looking for one tag */
-                                       if (findone)
-                                       {
-                                               *high = hi;
-                                               *low = lo;
-                                               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);

                                        }
                                        }

-          hi2=0;
-                                       hi=0;
-                                       lo=0;
-                                       found=0;

                                }
                                }

+                               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();

 }
 
 }
 

-void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
+void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)

 {
 {

-       uint8_t *dest =  mifare_get_bigbufptr();
-       int m=0, n=0, i=0, idx=0, lastval=0;
-       int found=0;
-       uint32_t code=0, code2=0;
-
+       uint8_t *dest = (uint8_t *)BigBuf;
+       uint32_t bitLen = 0;
+       int clk = 0, invert = 0, errCnt  = 0;
+       uint64_t lo = 0;
+       
+       // Configure to go in 125Khz listen mode

        LFSetupFPGAForADC(0, true);
 
        LFSetupFPGAForADC(0, true);
 

-       for(;;) {
-               WDT_HIT();
-               if (ledcontrol)
-                       LED_A_ON();
-               if(BUTTON_PRESS()) {
-                       DbpString("Stopped");
-                       if (ledcontrol)
-                               LED_A_OFF();
-                       return;
-               }
+       while(!BUTTON_PRESS()) {

 
 

-               i = 0;
-               m = 30000;
-               memset(dest,128,m);
-               for(;;) {
-                       if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
-                               AT91C_BASE_SSC->SSC_THR = 0x43;
-                               if (ledcontrol)
-                                       LED_D_ON();
-                       }
-                       if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-                               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] = (dest[i] < 127) ? 0 : 1;
-                               ++i;
-                               if (ledcontrol)
-                                       LED_D_OFF();
-                               if(i >= m)      
-                                       break;
-                       }
-               }
+               WDT_HIT();
+               if (ledcontrol) LED_A_ON();

 
 

+               DoAcquisition125k_internal(-1,true);
+       

                // FSK demodulator
                // FSK demodulator

+               bitLen = BIGBUF_SIZE;
+               errCnt = askmandemod(dest,&bitLen,&clk,&invert); 
+               if ( errCnt < 0 ) continue;

 
 

-               // sync to first lo-hi transition
-               for( idx=1; idx<m; idx++) {
-                       if (dest[idx-1]<dest[idx])
-                               lastval=idx;
-                               break;
-               }

                WDT_HIT();
                WDT_HIT();

+               
+               lo = Em410xDecode(dest,bitLen);
+               
+               if ( lo <= 0) continue;
+                               
+               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)
+               );

 
 

-               // 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( i=0; idx<m; idx++) {
-                       if (dest[idx-1]<dest[idx]) {
-                               dest[i]=idx-lastval;
-                               dest[i] = (dest[i] <= 8) ? 1:0;
-                               lastval=idx;
-                               i++;
-                       }
+               if (findone){
+                       if (ledcontrol) LED_A_OFF();
+                               return;

                }
                }

-               m=i;
+               

                WDT_HIT();
                WDT_HIT();

+               lo = clk = invert = errCnt = 0;
+       }
+       DbpString("Stopped");
+       if (ledcontrol) LED_A_OFF();
+}

 
 

-               // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns
-               lastval=dest[0];
-               idx=0;
-               i=0;
-               n=0;
-               for( idx=0; idx<m; idx++) {
-                       if (dest[idx]==lastval) {
-                               n++;
-                       } else {
-                               // a bit time is five fc/10 or six fc/8 cycles so figure out how many bits a pattern width represents,
-                               // an extra fc/8 pattern preceeds every 4 bits (about 200 cycles) just to complicate things but it gets
-                               // swallowed up by rounding
-                               // expected results are 1 or 2 bits, any more and it's an invalid manchester encoding
-                               // special start of frame markers use invalid manchester states (no transitions) by using sequences
-                               // like 111000
-                               if (dest[idx-1]) {
-                                       n=(n+1)/7;                      // fc/8 in sets of 7
-                               } else {
-                                       n=(n+1)/6;                      // fc/10 in sets of 6
-                               }
+void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
+{
+       uint8_t *dest = (uint8_t *)BigBuf;
+       int idx = 0;
+       uint32_t code = 0, code2 = 0;
+       uint8_t version = 0;
+       uint8_t facilitycode = 0;
+       uint16_t number = 0;

 
 

-                               // stuff appropriate bits in buffer
-                               if ( n==0 )
-                                       dest[i++]=dest[idx-1]^1;
-                               else {
-                                       if ( n < 13){
-                                               for(int j=0; j<n; j++){
-                                                       dest[i++]=dest[idx-1]^1;
-                                               }
-                                       }
-                               }
-                               
-                               n=0;
-                               lastval=dest[idx];
-                       }
-               }//end for
+       LFSetupFPGAForADC(0, true);
+
+       while(!BUTTON_PRESS()) {

 
 

-               m=i;

                WDT_HIT();
                WDT_HIT();

+               if (ledcontrol) LED_A_ON();
+
+               DoAcquisition125k_internal(-1, true);
+
+               idx = IOdemodFSK(dest, BIGBUF_SIZE);

                
                

-        for( idx=0; idx<m-9; idx++) {
-         if ( !(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])&& (dest[idx+9])){
-               found=1;
-               //idx+=9;
-               if (found) {
-                   Dbprintf("%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]);
-                   Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+8], dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15]);                         
-                   Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+16],dest[idx+17],dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23]);
-                   Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+24],dest[idx+25],dest[idx+26],dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31]);
-                   Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35],dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39]);
-                   Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44],dest[idx+45],dest[idx+46],dest[idx+47]);
-                   Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53],dest[idx+54],dest[idx+55]);
-                   Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]);
-               
-                   short version='\x00';
-                   char unknown='\x00';
-                   uint16_t number=0;
-                   for(int j=14;j<18;j++){
-                      //Dbprintf("%d",dest[idx+j]);
-                      version <<=1;
-                      if (dest[idx+j]) version |= 1;
-                   }
-                   for(int j=19;j<27;j++){
-                      //Dbprintf("%d",dest[idx+j]);
-                      unknown <<=1;
-                      if (dest[idx+j]) unknown |= 1;
-                   }
-                   for(int j=37;j<45;j++){
-                      //Dbprintf("%d",dest[idx+j]);
-                      number <<=1;
-                      if (dest[idx+j]) number |= 1;
-                   }
-                   for(int j=46;j<53;j++){
-                      //Dbprintf("%d",dest[idx+j]);
-                      number <<=1;
-                      if (dest[idx+j]) number |= 1;
-                   }
+               if ( idx < 0 )
+                       continue;

                        
                        

-                   for(int j=0; j<32; j++){
-                               code <<=1;
-                               if(dest[idx+j]) code |= 1;
-                   }
-                   for(int j=32; j<64; j++){
-                               code2 <<=1;
-                               if(dest[idx+j]) code2 |= 1;
-                   }
-                   
-                   Dbprintf("XSF(%02d)%02x:%d (%08x%08x)",version,unknown,number,code,code2);
-                   if (ledcontrol)
-                       LED_D_OFF();
+               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
+
+               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]);

                }
                }

-               // if we're only looking for one tag 
+
+               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 (findone){
                if (findone){

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

                }
                }

-
-               found=0;
-         }
+               code = code2 = 0;
+               version = facilitycode = 0;
+               number = 0;
+               idx = 0;

        }
        }

-       }
-       WDT_HIT();
+
+       DbpString("Stopped");
+       if (ledcontrol) LED_A_OFF();

 }
 
 /*------------------------------
 }
 
 /*------------------------------


@@ -1129,7 +1061,7 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMod
 // Read one card block in page 0
 void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
 {
 // Read one card block in page 0
 void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
 {

-       uint8_t *dest =  mifare_get_bigbufptr();
+       uint8_t *dest =  get_bigbufptr_recvrespbuf();

        uint16_t bufferlength = T55xx_SAMPLES_SIZE;
        uint32_t i = 0;
 
        uint16_t bufferlength = T55xx_SAMPLES_SIZE;
        uint32_t i = 0;
 


@@ -1165,13 +1097,14 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
        for(;;) {
                if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
                        AT91C_BASE_SSC->SSC_THR = 0x43;
        for(;;) {
                if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
                        AT91C_BASE_SSC->SSC_THR = 0x43;

+                       //AT91C_BASE_SSC->SSC_THR = 0xff;

                        LED_D_ON();
                }
                if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {
                        dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
                        ++i;
                        LED_D_OFF();
                        LED_D_ON();
                }
                if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {
                        dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
                        ++i;
                        LED_D_OFF();

-                       if (i > bufferlength) break;
+                       if (i >= bufferlength) break;

                }
        }
  
                }
        }
  


@@ -1182,9 +1115,9 @@ void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode)
 
 // Read card traceability data (page 1)
 void T55xxReadTrace(void){
 
 // Read card traceability data (page 1)
 void T55xxReadTrace(void){

-       uint8_t *dest =  mifare_get_bigbufptr();
+       uint8_t *dest =  get_bigbufptr_recvrespbuf();

        uint16_t bufferlength = T55xx_SAMPLES_SIZE;
        uint16_t bufferlength = T55xx_SAMPLES_SIZE;

-       int i=0;
+       uint32_t i = 0;

        
        // Clear destination buffer before sending the command 0x80 = average
        memset(dest, 0x80, bufferlength);  
        
        // Clear destination buffer before sending the command 0x80 = average
        memset(dest, 0x80, bufferlength);  


@@ -1637,9 +1570,12 @@ int DemodPCF7931(uint8_t **outBlocks) {
         block_done = 0;
         half_switch = 0;
       }
         block_done = 0;
         half_switch = 0;
       }

+             if(i < GraphTraceLen)
+             {

       if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
       else dir = 1;
     }
       if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0;
       else dir = 1;
     }

+           }

     if(bitidx==255)
       bitidx=0;
     warnings = 0;
     if(bitidx==255)
       bitidx=0;
     warnings = 0;


@@ -1943,7 +1879,7 @@ void EM4xLogin(uint32_t Password) {
 
 void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
   
 
 void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
   

-       uint8_t *dest =  mifare_get_bigbufptr();
+       uint8_t *dest =   (uint8_t *)BigBuf;

        uint16_t bufferlength = 12000;
        uint32_t i = 0;
 
        uint16_t bufferlength = 12000;
        uint32_t i = 0;