Revert "Revert "lf simask, lf simfsk and bug fixes""

[proxmark3-svn] / armsrc / lfops.c

diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 8ea9b317fc00d6374016f6871e2ece5e9a5cf310..780af1994203892b8b658043d7fe3a194fe1041c 100644 (file)
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -15,130 +15,44 @@
 #include "crc16.h"
 #include "string.h"
 #include "lfdemod.h"
 #include "crc16.h"
 #include "string.h"
 #include "lfdemod.h"

+#include "lfsampling.h"

 
 
 /**
 
 
 /**

-* 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
-*/
-void DoAcquisition125k_internal(int trigger_threshold,bool silent)
-{
-    uint8_t *dest = (uint8_t *)BigBuf;
-    int n = sizeof(BigBuf);
-    int i;
-
-    memset(dest, 0, n);
-    i = 0;
-    for(;;) {
-        if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
-            AT91C_BASE_SSC->SSC_THR = 0x43;
-            LED_D_ON();
-        }
-        if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY) {
-            dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
-            LED_D_OFF();
-            if (trigger_threshold != -1 && dest[i] < trigger_threshold)
-                continue;
-            else
-                trigger_threshold = -1;
-            if (++i >= n) break;
-        }
-    }
-    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]);
-
-    }
-}
-/**
-* Perform sample aquisition.
-*/
-void DoAcquisition125k(int trigger_threshold)
-{
-    DoAcquisition125k_internal(trigger_threshold, false);
-}
-
-/**
-* 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
-*
-**/
-void LFSetupFPGAForADC(int divisor, bool lf_field)
-{
-    FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
-    if ( (divisor == 1) || (divisor < 0) || (divisor > 255) )
-        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
-    else if (divisor == 0)
-        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
-    else
-        FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);
-
-    FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | (lf_field ? FPGA_LF_ADC_READER_FIELD : 0));
-
-    // 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);
-    // Now set up the SSC to get the ADC samples that are now streaming at us.
-    FpgaSetupSsc();
-}
-/**
-* Initializes the FPGA, and acquires the samples.
-**/
-void AcquireRawAdcSamples125k(int divisor)
-{
-    LFSetupFPGAForADC(divisor, true);
-    // Now call the acquisition routine
-    DoAcquisition125k_internal(-1,false);
-}
-/**
-* Initializes the FPGA for snoop-mode, and acquires the samples.
-**/
-
-void SnoopLFRawAdcSamples(int divisor, int trigger_threshold)
-{
-    LFSetupFPGAForADC(divisor, false);
-    DoAcquisition125k(trigger_threshold);
-}
-
+ * Function to do a modulation and then get samples.
+ * @param delay_off
+ * @param period_0
+ * @param period_1
+ * @param command
+ */

 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)
 {
 

-    /* Make sure the tag is reset */
-    FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
-    FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-    SpinDelay(2500);
-
-

     int divisor_used = 95; // 125 KHz
     // see if 'h' was specified
 
     if (command[strlen((char *) command) - 1] == 'h')
         divisor_used = 88; // 134.8 KHz
 
     int divisor_used = 95; // 125 KHz
     // see if 'h' was specified
 
     if (command[strlen((char *) command) - 1] == 'h')
         divisor_used = 88; // 134.8 KHz
 

+       sample_config sc = { 0,0,1, divisor_used, 0};
+       setSamplingConfig(&sc);

 
 

-    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);
+       /* Make sure the tag is reset */
+       FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+       SpinDelay(2500);

 
 

-    // And a little more time for the tag to fully power up
-    SpinDelay(2000);
+       LFSetupFPGAForADC(sc.divisor, 1);

 
 

-    // Now set up the SSC to get the ADC samples that are now streaming at us.
-    FpgaSetupSsc();
+       // And a little more time for the tag to fully power up
+       SpinDelay(2000);

 
     // now modulate the reader field
     while(*command != '\0' && *command != ' ') {
         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
         LED_D_OFF();
         SpinDelayUs(delay_off);
 
     // now modulate the reader field
     while(*command != '\0' && *command != ' ') {
         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
         LED_D_OFF();
         SpinDelayUs(delay_off);

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


@@ -150,14 +64,16 @@ 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, sc.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

-    DoAcquisition125k(-1);
+       DoAcquisition_config(false);

 }
 
 }
 

+
+

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


@@ -177,8 +93,8 @@ void ReadTItag(void)
  #define FREQLO 123200
  #define FREQHI 134200
 
  #define FREQLO 123200
  #define FREQHI 134200
 

-    signed char *dest = (signed char *)BigBuf;
-    int n = sizeof(BigBuf);
+    signed char *dest = (signed char *)BigBuf_get_addr();
+    uint16_t n = BigBuf_max_traceLen();

     // 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;
 


@@ -330,7 +246,8 @@ void AcquireTiType(void)
  #define TIBUFLEN 1250
 
     // clear buffer
  #define TIBUFLEN 1250
 
     // clear buffer

-    memset(BigBuf,0,sizeof(BigBuf));
+       uint32_t *BigBuf = (uint32_t *)BigBuf_get_addr();
+    memset(BigBuf,0,BigBuf_max_traceLen()/sizeof(uint32_t));

 
     // Set up the synchronous serial port
     AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN;
 
     // Set up the synchronous serial port
     AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DIN;


@@ -378,7 +295,7 @@ void AcquireTiType(void)
     AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT;
     AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN | GPIO_SSC_DOUT;
 
     AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT;
     AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_DIN | GPIO_SSC_DOUT;
 

-    char *dest = (char *)BigBuf;
+    char *dest = (char *)BigBuf_get_addr();

     n = TIBUFLEN*32;
     // unpack buffer
     for (i=TIBUFLEN-1; i>=0; i--) {
     n = TIBUFLEN*32;
     // unpack buffer
     for (i=TIBUFLEN-1; i>=0; i--) {


@@ -467,7 +384,7 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
 void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
 {
     int i;
 void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
 {
     int i;

-    uint8_t *tab = (uint8_t *)BigBuf;
+    uint8_t *tab = BigBuf_get_addr();

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


@@ -477,8 +394,8 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
     AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
     AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
 
     AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
     AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
 

-#define SHORT_COIL()   LOW(GPIO_SSC_DOUT)
-#define OPEN_COIL()            HIGH(GPIO_SSC_DOUT)
+ #define SHORT_COIL()  LOW(GPIO_SSC_DOUT)
+ #define OPEN_COIL()           HIGH(GPIO_SSC_DOUT)

 
     i = 0;
     for(;;) {
 
     i = 0;
     for(;;) {


@@ -500,7 +417,7 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
 
         if (ledcontrol)
             LED_D_OFF();
 
         if (ledcontrol)
             LED_D_OFF();

-
+        //wait for next sample time

         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");


@@ -525,29 +442,31 @@ void SimulateTagLowFrequencyBidir(int divisor, int t0)
 {
 }
 
 {
 }
 

-// compose fc/8 fc/10 waveform
-static void fc(int c, int *n) {
-    uint8_t *dest = (uint8_t *)BigBuf;
+// compose fc/8 fc/10 waveform (FSK2)
+static void fc(int c, int *n)
+{
+    uint8_t *dest = BigBuf_get_addr();

     int idx;
 
     // for when we want an fc8 pattern every 4 logical bits
     if(c==0) {
         dest[((*n)++)]=1;
         dest[((*n)++)]=1;
     int idx;
 
     // for when we want an fc8 pattern every 4 logical bits
     if(c==0) {
         dest[((*n)++)]=1;
         dest[((*n)++)]=1;

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

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

+  

     // an fc/8  encoded bit is a bit pattern of  11000000  x6 = 48 samples
     if(c==8) {
         for (idx=0; idx<6; idx++) {
             dest[((*n)++)]=1;
             dest[((*n)++)]=1;
     // an fc/8  encoded bit is a bit pattern of  11000000  x6 = 48 samples
     if(c==8) {
         for (idx=0; idx<6; idx++) {
             dest[((*n)++)]=1;
             dest[((*n)++)]=1;

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

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


@@ -558,6 +477,8 @@ static void fc(int c, int *n) {
     // an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples
     if(c==10) {
         for (idx=0; idx<5; idx++) {
     // an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples
     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;
             dest[((*n)++)]=1;
             dest[((*n)++)]=1;


@@ -566,8 +487,37 @@ static void fc(int c, int *n) {
             dest[((*n)++)]=0;
             dest[((*n)++)]=0;
             dest[((*n)++)]=0;
             dest[((*n)++)]=0;
             dest[((*n)++)]=0;
             dest[((*n)++)]=0;

-            dest[((*n)++)]=0;
-            dest[((*n)++)]=0;
+        }
+    }
+}
+// compose fc/X fc/Y waveform (FSKx)
+static void fcAll(uint8_t c, int *n, uint8_t clock) 
+{
+    uint8_t *dest = BigBuf_get_addr();
+    uint8_t idx;
+    uint8_t fcCnt;
+    // c = count of field clock for this bit
+
+    int mod = clock % c;
+    // loop through clock - step field clock
+    for (idx=0; idx < (uint8_t) clock/c; idx++){
+        // loop through field clock length - put 1/2 FC length 1's and 1/2 0's per field clock wave (to create the wave)
+        for (fcCnt=0; fcCnt < c; fcCnt++){
+            if (fcCnt < c/2){
+                dest[((*n)++)]=1;
+            } else {
+                dest[((*n)++)]=0;    
+            }
+        }
+    }
+    Dbprintf("mod: %d",mod);
+    if (mod>0){ //for FC counts that don't add up to a full clock cycle padd with extra wave
+        for (idx=0; idx < mod; idx++){
+            if (idx < mod/2) {
+                dest[((*n)++)]=1;
+            } else {
+                dest[((*n)++)]=0;
+            }

         }
     }
 }
         }
     }
 }


@@ -628,14 +578,122 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
         LED_A_OFF();
 }
 
         LED_A_OFF();
 }
 

+// prepare a waveform pattern in the buffer based on the ID given then
+// simulate a FSK tag until the button is pressed
+// arg1 contains fcHigh and fcLow, arg2 contains invert and clock
+void CmdFSKsimTAG(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
+{
+    int ledcontrol=1;
+    int n=0, i=0;
+    uint8_t fcHigh = arg1 >> 8;
+    uint8_t fcLow = arg1 & 0xFF;
+    //spacer bit
+    uint8_t clk = arg2 & 0xFF;
+    uint8_t invert = (arg2 >> 8) & 1;
+    //fcAll(0, &n, clk);
+    
+    WDT_HIT();
+    for (i=0; i<size; i++){
+        //if ((i%4==3) fcAll(0,&n));
+        if (BitStream[i] == invert){
+            fcAll(fcLow, &n, clk);
+        } else {
+            fcAll(fcHigh, &n, clk);
+        }
+    }
+    Dbprintf("Simulating with fcHigh: %d, fcLow: %d, clk: %d, invert: %d, n: %d",fcHigh, fcLow, clk, invert, n);
+    //Dbprintf("First 64:");
+    //uint8_t *dest = BigBuf_get_addr();
+    //i=0;
+    //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
+    //i+=16;
+    //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
+    //i+=16;
+    //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
+    //i+=16;
+    //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
+           
+    if (ledcontrol)
+        LED_A_ON();
+    SimulateTagLowFrequency(n, 0, ledcontrol);
+
+    if (ledcontrol)
+        LED_A_OFF();
+}
+
+// compose ask waveform for one bit(ASK)
+static void askSimBit(uint8_t c, int *n, uint8_t clock, uint8_t manchester) 
+{
+    uint8_t *dest = BigBuf_get_addr();
+    uint8_t idx;
+    // c = current bit 1 or 0
+    int i = 0;
+    // for when we want a separator
+    if (c==2) { //separator
+        for (i=0; i<clock/2; i++){
+            dest[((*n)++)]=0;
+        }
+    } else {
+        if (manchester){
+            for (idx=0; idx < (uint8_t) clock/2; idx++){
+                dest[((*n)++)]=c;    
+            }
+            for (idx=0; idx < (uint8_t) clock/2; idx++){
+                dest[((*n)++)]=c^1;    
+            }
+        } else {
+            for (idx=0; idx < (uint8_t) clock; idx++){
+                dest[((*n)++)]=c;    
+            }
+        }        
+    }
+}
+
+// args clock, ask/man or askraw, invert, transmission separator
+void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
+{
+    int ledcontrol = 1;
+    int n=0, i=0;
+    uint8_t clk = (arg1 >> 8) & 0xFF;
+    uint8_t manchester = arg1 & 1;
+    uint8_t separator = arg2 & 1;
+    uint8_t invert = (arg2 >> 8) & 1;
+    WDT_HIT();
+    for (i=0; i<size; i++){
+        askSimBit(BitStream[i]^invert, &n, clk, manchester);
+    }
+    if (separator==1) Dbprintf("sorry but separator option not yet available"); //askSimBit(2, &n, clk, manchester);
+
+    Dbprintf("Simulating with clk: %d, invert: %d, manchester: %d, separator: %d, n: %d",clk, invert, manchester, separator, n);
+    //DEBUG
+    //Dbprintf("First 64:");
+    //uint8_t *dest = BigBuf_get_addr();
+    //i=0;
+    //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
+    //i+=16;
+    //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
+    //i+=16;
+    //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
+    //i+=16;
+    //Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]);
+
+
+    if (ledcontrol)
+        LED_A_ON();
+    SimulateTagLowFrequency(n, 0, ledcontrol);
+
+    if (ledcontrol)
+        LED_A_OFF();
+}
+

 // loop to get raw HID waveform then FSK demodulate the TAG ID from it
 void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {
 // 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;
-
-    size_t size=sizeof(BigBuf), idx=0; //, found=0;
+    uint8_t *dest = BigBuf_get_addr();
+    const size_t sizeOfBigBuff = BigBuf_max_traceLen();
+    size_t size = 0; 

     uint32_t hi2=0, hi=0, lo=0;
     uint32_t hi2=0, hi=0, lo=0;

-
+    int idx=0;

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


@@ -644,12 +702,11 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
         WDT_HIT();
         if (ledcontrol) LED_A_ON();
 
         WDT_HIT();
         if (ledcontrol) LED_A_ON();
 

-        DoAcquisition125k_internal(-1,true);
-        // FSK demodulator
+               DoAcquisition_default(-1,true);
+               // FSK demodulator
+        size = sizeOfBigBuff;  //variable size will change after demod so re initialize it before use

                idx = HIDdemodFSK(dest, &size, &hi2, &hi, &lo);
                idx = HIDdemodFSK(dest, &size, &hi2, &hi, &lo);

-
-        WDT_HIT();
-
+        

                if (idx>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 (idx>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


@@ -706,6 +763,8 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
             }
             if (findone){
                 if (ledcontrol)        LED_A_OFF();
             }
             if (findone){
                 if (ledcontrol)        LED_A_OFF();

+                *high = hi;
+                *low = lo;

                 return;
             }
             // reset
                 return;
             }
             // reset


@@ -719,10 +778,10 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 
 void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
 {
 
 void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
 {

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

 
        size_t size=0, idx=0;
 
        size_t size=0, idx=0;

-    int clk=0, invert=0, errCnt=0;
+    int clk=0, invert=0, errCnt=0, maxErr=20;

     uint64_t lo=0;
     // Configure to go in 125Khz listen mode
     LFSetupFPGAForADC(95, true);
     uint64_t lo=0;
     // Configure to go in 125Khz listen mode
     LFSetupFPGAForADC(95, true);


@@ -732,11 +791,11 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
         WDT_HIT();
         if (ledcontrol) LED_A_ON();
 
         WDT_HIT();
         if (ledcontrol) LED_A_ON();
 

-        DoAcquisition125k_internal(-1,true);
-        size  = sizeof(BigBuf);
+               DoAcquisition_default(-1,true);
+               size  = BigBuf_max_traceLen();

         //Dbprintf("DEBUG: Buffer got");
                //askdemod and manchester decode
         //Dbprintf("DEBUG: Buffer got");
                //askdemod and manchester decode

-               errCnt = askmandemod(dest, &size, &clk, &invert);
+               errCnt = askmandemod(dest, &size, &clk, &invert, maxErr);

         //Dbprintf("DEBUG: ASK Got");
         WDT_HIT();
 
         //Dbprintf("DEBUG: ASK Got");
         WDT_HIT();
 


@@ -753,6 +812,8 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
             }
             if (findone){
                 if (ledcontrol)        LED_A_OFF();
             }
             if (findone){
                 if (ledcontrol)        LED_A_OFF();

+                *high=lo>>32;
+                *low=lo & 0xFFFFFFFF;

                 return;
             }
         } else{
                 return;
             }
         } else{


@@ -771,7 +832,7 @@ void CmdEM410xdemod(int findone, int *high, int *low, int ledcontrol)
 
 void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {
 
 void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {

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

     int idx=0;
     uint32_t code=0, code2=0;
     uint8_t version=0;
     int idx=0;
     uint32_t code=0, code2=0;
     uint8_t version=0;


@@ -783,10 +844,10 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
     while(!BUTTON_PRESS()) {
         WDT_HIT();
         if (ledcontrol) LED_A_ON();
     while(!BUTTON_PRESS()) {
         WDT_HIT();
         if (ledcontrol) LED_A_ON();

-        DoAcquisition125k_internal(-1,true);
-        //fskdemod and get start index
+               DoAcquisition_default(-1,true);
+               //fskdemod and get start index

         WDT_HIT();
         WDT_HIT();

-        idx = IOdemodFSK(dest,sizeof(BigBuf));
+        idx = IOdemodFSK(dest, BigBuf_max_traceLen());

         if (idx>0){
             //valid tag found
 
         if (idx>0){
             //valid tag found
 


@@ -819,6 +880,8 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
             if (findone){
                 if (ledcontrol)        LED_A_OFF();
                 //LED_A_OFF();
             if (findone){
                 if (ledcontrol)        LED_A_OFF();
                 //LED_A_OFF();

+                *high=code;
+                *low=code2;

                 return;
             }
             code=code2=0;
                 return;
             }
             code=code2=0;


@@ -958,11 +1021,11 @@ 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 = (uint8_t *)BigBuf;
+    uint8_t *dest = BigBuf_get_addr();

     //int m=0, i=0; //enio adjustment 12/10/14
     uint32_t m=0, i=0;
     FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
     //int m=0, i=0; //enio adjustment 12/10/14
     uint32_t m=0, i=0;
     FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

-    m = sizeof(BigBuf);
+    m = BigBuf_max_traceLen();

     // Clear destination buffer before sending the command
     memset(dest, 128, m);
     // Connect the A/D to the peak-detected low-frequency path.
     // Clear destination buffer before sending the command
     memset(dest, 128, m);
     // Connect the A/D to the peak-detected low-frequency path.


@@ -1023,11 +1086,11 @@ 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 = (uint8_t *)BigBuf;
+    uint8_t *dest = BigBuf_get_addr();

     int m=0, i=0;
 
     FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
     int m=0, i=0;
 
     FpgaDownloadAndGo(FPGA_BITSTREAM_LF);

-    m = sizeof(BigBuf);
+    m = BigBuf_max_traceLen();

     // Clear destination buffer before sending the command
     memset(dest, 128, m);
     // Connect the A/D to the peak-detected low-frequency path.
     // Clear destination buffer before sending the command
     memset(dest, 128, m);
     // Connect the A/D to the peak-detected low-frequency path.


@@ -1377,8 +1440,8 @@ void CopyIndala224toT55x7(int uid1, int uid2, int uid3, int uid4, int uid5, int
 int DemodPCF7931(uint8_t **outBlocks) {
     uint8_t BitStream[256];
     uint8_t Blocks[8][16];
 int DemodPCF7931(uint8_t **outBlocks) {
     uint8_t BitStream[256];
     uint8_t Blocks[8][16];

-    uint8_t *GraphBuffer = (uint8_t *)BigBuf;
-    int GraphTraceLen = sizeof(BigBuf);
+    uint8_t *GraphBuffer = BigBuf_get_addr();
+    int GraphTraceLen = BigBuf_max_traceLen();

     int i, j, lastval, bitidx, half_switch;
     int clock = 64;
     int tolerance = clock / 8;
     int i, j, lastval, bitidx, half_switch;
     int clock = 64;
     int tolerance = clock / 8;


@@ -1388,7 +1451,9 @@ int DemodPCF7931(uint8_t **outBlocks) {
     int lmin=128, lmax=128;
     uint8_t dir;
 
     int lmin=128, lmax=128;
     uint8_t dir;
 

-    AcquireRawAdcSamples125k(0);
+       LFSetupFPGAForADC(95, true);
+       DoAcquisition_default(0, 0);
+

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


@@ -1615,7 +1680,7 @@ void ReadPCF7931() {
         tries++;
         if (BUTTON_PRESS()) return;
     } while (num_blocks != max_blocks);
         tries++;
         if (BUTTON_PRESS()) return;
     } while (num_blocks != max_blocks);

-end:
+ end:

     Dbprintf("-----------------------------------------");
     Dbprintf("Memory content:");
     Dbprintf("-----------------------------------------");
     Dbprintf("-----------------------------------------");
     Dbprintf("Memory content:");
     Dbprintf("-----------------------------------------");


@@ -1795,7 +1860,7 @@ void EM4xLogin(uint32_t Password) {
 void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 
     uint8_t fwd_bit_count;
 void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
 
     uint8_t fwd_bit_count;

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

     int m=0, i=0;
 
     //If password mode do login
     int m=0, i=0;
 
     //If password mode do login


@@ -1805,7 +1870,7 @@ void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
     fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );
     fwd_bit_count += Prepare_Addr( Address );
 
     fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );
     fwd_bit_count += Prepare_Addr( Address );
 

-    m = sizeof(BigBuf);
+    m = BigBuf_max_traceLen();

     // Clear destination buffer before sending the command
     memset(dest, 128, m);
     // Connect the A/D to the peak-detected low-frequency path.
     // Clear destination buffer before sending the command
     memset(dest, 128, m);
     // Connect the A/D to the peak-detected low-frequency path.