Applied Holiman's fixes for iclass.c and CSNs

[proxmark3-svn] / armsrc / iso14443a.c

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index f87527ea68200ce01a69a0b6456c4d8880b25ebb..aed6a1fe302bb5598a477f39ba285324f7253a77 100644 (file)
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -103,9 +103,9 @@ uint16_t FpgaSendQueueDelay;
 
 //variables used for timing purposes:
 //these are in ssp_clk cycles:
 
 //variables used for timing purposes:
 //these are in ssp_clk cycles:

-uint32_t NextTransferTime;
-uint32_t LastTimeProxToAirStart;
-uint32_t LastProxToAirDuration;
+static uint32_t NextTransferTime;
+static uint32_t LastTimeProxToAirStart;
+static uint32_t LastProxToAirDuration;

 
 
 
 
 
 


@@ -143,7 +143,6 @@ const uint8_t OddByteParity[256] = {
   1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1
 };
 
   1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1
 };
 

-

 void iso14a_set_trigger(bool enable) {
        trigger = enable;
 }
 void iso14a_set_trigger(bool enable) {
        trigger = enable;
 }


@@ -170,17 +169,28 @@ byte_t oddparity (const byte_t bt)
        return OddByteParity[bt];
 }
 
        return OddByteParity[bt];
 }
 

-uint32_t GetParity(const uint8_t * pbtCmd, int iLen)
+void GetParity(const uint8_t * pbtCmd, uint16_t iLen, uint8_t *par)

 {
 {

-       int i;
-       uint32_t dwPar = 0;
-
-       // Generate the parity bits
-       for (i = 0; i < iLen; i++) {
-               // and save them to a 32Bit word
-               dwPar |= ((OddByteParity[pbtCmd[i]]) << i);
+       uint16_t paritybit_cnt = 0;
+       uint16_t paritybyte_cnt = 0;
+       uint8_t parityBits = 0;
+
+       for (uint16_t i = 0; i < iLen; i++) {
+               // Generate the parity bits
+               parityBits |= ((OddByteParity[pbtCmd[i]]) << (7-paritybit_cnt));
+               if (paritybit_cnt == 7) {
+                       par[paritybyte_cnt] = parityBits; // save 8 Bits parity
+                       parityBits = 0; // and advance to next Parity Byte
+                       paritybyte_cnt++;
+                       paritybit_cnt = 0;
+               } else {
+               paritybit_cnt++;
+               }

        }
        }

-       return dwPar;
+               
+       // save remaining parity bits
+       par[paritybyte_cnt] = parityBits;
+       

 }
 
 void AppendCrc14443a(uint8_t* data, int len)
 }
 
 void AppendCrc14443a(uint8_t* data, int len)


@@ -189,33 +199,57 @@ void AppendCrc14443a(uint8_t* data, int len)
 }
 
 // The function LogTrace() is also used by the iClass implementation in iClass.c
 }
 
 // The function LogTrace() is also used by the iClass implementation in iClass.c

-bool RAMFUNC LogTrace(const uint8_t * btBytes, uint8_t iLen, uint32_t timestamp, uint32_t dwParity, bool readerToTag)
+bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag)

 {
        if (!tracing) return FALSE;
 {
        if (!tracing) return FALSE;

+       
+       uint16_t num_paritybytes = (iLen-1)/8 + 1; // number of valid paritybytes in *parity
+       uint16_t duration = timestamp_end - timestamp_start;
+

        // Return when trace is full
        // Return when trace is full

-       if (traceLen + sizeof(timestamp) + sizeof(dwParity) + iLen >= TRACE_SIZE) {
+       if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= TRACE_SIZE) {

                tracing = FALSE;        // don't trace any more
                return FALSE;
        }
        
                tracing = FALSE;        // don't trace any more
                return FALSE;
        }
        

-       // Trace the random, i'm curious
-       trace[traceLen++] = ((timestamp >> 0) & 0xff);
-       trace[traceLen++] = ((timestamp >> 8) & 0xff);
-       trace[traceLen++] = ((timestamp >> 16) & 0xff);
-       trace[traceLen++] = ((timestamp >> 24) & 0xff);
-
+       // Traceformat:
+       // 32 bits timestamp (little endian)
+       // 16 bits duration (little endian)
+       // 16 bits data length (little endian, Highest Bit used as readerToTag flag)
+       // y Bytes data
+       // x Bytes parity (one byte per 8 bytes data)
+
+       // timestamp (start)
+       trace[traceLen++] = ((timestamp_start >> 0) & 0xff);
+       trace[traceLen++] = ((timestamp_start >> 8) & 0xff);
+       trace[traceLen++] = ((timestamp_start >> 16) & 0xff);
+       trace[traceLen++] = ((timestamp_start >> 24) & 0xff);
+       
+       // duration
+       trace[traceLen++] = ((duration >> 0) & 0xff);
+       trace[traceLen++] = ((duration >> 8) & 0xff);
+       
+       // data length
+       trace[traceLen++] = ((iLen >> 0) & 0xff);
+       trace[traceLen++] = ((iLen >> 8) & 0xff);
+       
+       // readerToTag flag

        if (!readerToTag) {
                trace[traceLen - 1] |= 0x80;
        if (!readerToTag) {
                trace[traceLen - 1] |= 0x80;

-       }
-       trace[traceLen++] = ((dwParity >> 0) & 0xff);
-       trace[traceLen++] = ((dwParity >> 8) & 0xff);
-       trace[traceLen++] = ((dwParity >> 16) & 0xff);
-       trace[traceLen++] = ((dwParity >> 24) & 0xff);
-       trace[traceLen++] = iLen;
+       }
+
+       // data bytes

        if (btBytes != NULL && iLen != 0) {
                memcpy(trace + traceLen, btBytes, iLen);
        }
        if (btBytes != NULL && iLen != 0) {
                memcpy(trace + traceLen, btBytes, iLen);
        }

-       traceLen += iLen;
+       traceLen += iLen;
+       
+       // parity bytes
+       if (parity != NULL && iLen != 0) {
+               memcpy(trace + traceLen, parity, num_paritybytes);
+       }
+       traceLen += num_paritybytes;
+       

        return TRUE;
 }
 
        return TRUE;
 }
 


@@ -251,14 +285,21 @@ void UartReset()
        Uart.state = STATE_UNSYNCD;
        Uart.bitCount = 0;
        Uart.len = 0;                                           // number of decoded data bytes
        Uart.state = STATE_UNSYNCD;
        Uart.bitCount = 0;
        Uart.len = 0;                                           // number of decoded data bytes

+       Uart.parityLen = 0;                                     // number of decoded parity bytes

        Uart.shiftReg = 0;                                      // shiftreg to hold decoded data bits
        Uart.shiftReg = 0;                                      // shiftreg to hold decoded data bits

-       Uart.parityBits = 0;                            // 
+       Uart.parityBits = 0;                            // holds 8 parity bits

        Uart.twoBits = 0x0000;                          // buffer for 2 Bits
        Uart.highCnt = 0;
        Uart.startTime = 0;
        Uart.endTime = 0;
 }
 
        Uart.twoBits = 0x0000;                          // buffer for 2 Bits
        Uart.highCnt = 0;
        Uart.startTime = 0;
        Uart.endTime = 0;
 }
 

+void UartInit(uint8_t *data, uint8_t *parity)
+{
+       Uart.output = data;
+       Uart.parity = parity;
+       UartReset();
+}

 
 // use parameter non_real_time to provide a timestamp. Set to 0 if the decoder should measure real time
 static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)
 
 // use parameter non_real_time to provide a timestamp. Set to 0 if the decoder should measure real time
 static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)


@@ -266,14 +307,14 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)
 
        Uart.twoBits = (Uart.twoBits << 8) | bit;
        
 
        Uart.twoBits = (Uart.twoBits << 8) | bit;
        

-       if (Uart.state == STATE_UNSYNCD) {                                                                                              // not yet synced
+       if (Uart.state == STATE_UNSYNCD) {                                                                                      // not yet synced
+       

                if (Uart.highCnt < 7) {                                                                                                 // wait for a stable unmodulated signal
                if (Uart.highCnt < 7) {                                                                                                 // wait for a stable unmodulated signal

-                       if (Uart.twoBits == 0xffff) {
+                       if (Uart.twoBits == 0xffff)

                                Uart.highCnt++;
                                Uart.highCnt++;

-                       } else {
+                       else

                                Uart.highCnt = 0;
                                Uart.highCnt = 0;

-                       }
-               } else {        
+               } else {

                        Uart.syncBit = 0xFFFF; // not set
                        // look for 00xx1111 (the start bit)
                        if              ((Uart.twoBits & 0x6780) == 0x0780) Uart.syncBit = 7; 
                        Uart.syncBit = 0xFFFF; // not set
                        // look for 00xx1111 (the start bit)
                        if              ((Uart.twoBits & 0x6780) == 0x0780) Uart.syncBit = 7; 


@@ -313,6 +354,10 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)
                                                Uart.parityBits |= ((Uart.shiftReg >> 8) & 0x01);               // store parity bit
                                                Uart.bitCount = 0;
                                                Uart.shiftReg = 0;
                                                Uart.parityBits |= ((Uart.shiftReg >> 8) & 0x01);               // store parity bit
                                                Uart.bitCount = 0;
                                                Uart.shiftReg = 0;

+                                               if((Uart.len & 0x0007) == 0) { // every 8 data bytes
+                                                               Uart.parity[Uart.parityLen++] = Uart.parityBits; // store 8 parity bits
+                                                               Uart.parityBits = 0;
+                                               }

                                        }
                                }
                        }
                                        }
                                }
                        }


@@ -328,17 +373,28 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)
                                        Uart.parityBits |= ((Uart.shiftReg >> 8) & 0x01);                       // store parity bit
                                        Uart.bitCount = 0;
                                        Uart.shiftReg = 0;
                                        Uart.parityBits |= ((Uart.shiftReg >> 8) & 0x01);                       // store parity bit
                                        Uart.bitCount = 0;
                                        Uart.shiftReg = 0;

+                                       if ((Uart.len & 0x0007) == 0) { // every 8 data bytes
+                                               Uart.parity[Uart.parityLen++] = Uart.parityBits; // store 8 parity bits
+                                               Uart.parityBits = 0;
+                                       }

                                }
                        } else {                                                                                                                        // no modulation in both halves - Sequence Y
                                if (Uart.state == STATE_MILLER_Z || Uart.state == STATE_MILLER_Y) {     // Y after logic "0" - End of Communication
                                        Uart.state = STATE_UNSYNCD;
                                }
                        } else {                                                                                                                        // no modulation in both halves - Sequence Y
                                if (Uart.state == STATE_MILLER_Z || Uart.state == STATE_MILLER_Y) {     // Y after logic "0" - End of Communication
                                        Uart.state = STATE_UNSYNCD;

-                                       if(Uart.len == 0 && Uart.bitCount > 0) {                                                                                // if we decoded some bits
-                                               Uart.shiftReg >>= (9 - Uart.bitCount);                                  // add them to the output
-                                               Uart.output[Uart.len++] = (Uart.shiftReg & 0xff);
-                                               Uart.parityBits <<= 1;                                                                  // no parity bit - add "0"
-                                               Uart.bitCount--;                                                                                // last "0" was part of the EOC sequence
-                                       }
+                                       Uart.bitCount--;                                        // last "0" was part of EOC sequence
+                                       Uart.shiftReg <<= 1;                            // drop it
+                                       if(Uart.bitCount > 0) {                         // if we decoded some bits
+                                       Uart.shiftReg >>= (9 - Uart.bitCount); // right align them
+                                       Uart.output[Uart.len++] = (Uart.shiftReg & 0xff); // add last byte to the output
+                                       Uart.parityBits <<= 1;                          // add a (void) parity bit
+                                       Uart.parityBits <<= (8 - (Uart.len & 0x0007)); // left align parity bits
+                                       Uart.parity[Uart.parityLen++] = Uart.parityBits; // and store it

                                        return TRUE;
                                        return TRUE;

+                               } else if (Uart.len & 0x0007) {                 // there are some parity bits to store
+                                       Uart.parityBits <<= (8 - (Uart.len & 0x0007)); // left align remaining parity bits
+                                       Uart.parity[Uart.parityLen++] = Uart.parityBits; // and store them
+                                       return TRUE;                                            // we are finished with decoding the raw data sequence
+                                       }

                                }
                                if (Uart.state == STATE_START_OF_COMMUNICATION) {                               // error - must not follow directly after SOC
                                        UartReset();
                                }
                                if (Uart.state == STATE_START_OF_COMMUNICATION) {                               // error - must not follow directly after SOC
                                        UartReset();


@@ -353,12 +409,16 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)
                                                Uart.parityBits |= ((Uart.shiftReg >> 8) & 0x01);               // store parity bit
                                                Uart.bitCount = 0;
                                                Uart.shiftReg = 0;
                                                Uart.parityBits |= ((Uart.shiftReg >> 8) & 0x01);               // store parity bit
                                                Uart.bitCount = 0;
                                                Uart.shiftReg = 0;

+                                               if ((Uart.len & 0x0007) == 0) {                                          // every 8 data bytes
+                                                       Uart.parity[Uart.parityLen++] = Uart.parityBits; // store 8 parity bits
+                                                       Uart.parityBits = 0;
+                                               }

                                        }
                                }
                        }
                }
                        
                                        }
                                }
                        }
                }
                        

-       } 
+       }       

 
     return FALSE;      // not finished yet, need more data
 }
 
     return FALSE;      // not finished yet, need more data
 }


@@ -397,6 +457,7 @@ void DemodReset()
 {
        Demod.state = DEMOD_UNSYNCD;
        Demod.len = 0;                                          // number of decoded data bytes
 {
        Demod.state = DEMOD_UNSYNCD;
        Demod.len = 0;                                          // number of decoded data bytes

+       Demod.parityLen = 0;

        Demod.shiftReg = 0;                                     // shiftreg to hold decoded data bits
        Demod.parityBits = 0;                           // 
        Demod.collisionPos = 0;                         // Position of collision bit
        Demod.shiftReg = 0;                                     // shiftreg to hold decoded data bits
        Demod.parityBits = 0;                           // 
        Demod.collisionPos = 0;                         // Position of collision bit


@@ -406,6 +467,13 @@ void DemodReset()
        Demod.endTime = 0;
 }
 
        Demod.endTime = 0;
 }
 

+void DemodInit(uint8_t *data, uint8_t *parity)
+{
+       Demod.output = data;
+       Demod.parity = parity;
+       DemodReset();
+}
+

 // use parameter non_real_time to provide a timestamp. Set to 0 if the decoder should measure real time
 static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non_real_time)
 {
 // use parameter non_real_time to provide a timestamp. Set to 0 if the decoder should measure real time
 static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non_real_time)
 {


@@ -454,6 +522,10 @@ static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non
                                Demod.parityBits |= ((Demod.shiftReg >> 8) & 0x01);     // store parity bit
                                Demod.bitCount = 0;
                                Demod.shiftReg = 0;
                                Demod.parityBits |= ((Demod.shiftReg >> 8) & 0x01);     // store parity bit
                                Demod.bitCount = 0;
                                Demod.shiftReg = 0;

+                               if((Demod.len & 0x0007) == 0) { // every 8 data bytes
+                                       Demod.parity[Demod.parityLen++] = Demod.parityBits; // store 8 parity bits
+                                       Demod.parityBits = 0;
+                               }

                        }
                        Demod.endTime = Demod.startTime + 8*(9*Demod.len + Demod.bitCount + 1) - 4;
                } else {                                                                                                                // no modulation in first half
                        }
                        Demod.endTime = Demod.startTime + 8*(9*Demod.len + Demod.bitCount + 1) - 4;
                } else {                                                                                                                // no modulation in first half


@@ -466,17 +538,24 @@ static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non
                                        Demod.parityBits |= ((Demod.shiftReg >> 8) & 0x01); // store parity bit
                                        Demod.bitCount = 0;
                                        Demod.shiftReg = 0;
                                        Demod.parityBits |= ((Demod.shiftReg >> 8) & 0x01); // store parity bit
                                        Demod.bitCount = 0;
                                        Demod.shiftReg = 0;

+                                       if ((Demod.len & 0x0007) == 0) { // every 8 data bytes
+                                               Demod.parity[Demod.parityLen++] = Demod.parityBits; // store 8 parity bits1
+                                               Demod.parityBits = 0;
+                                       }

                                }
                                Demod.endTime = Demod.startTime + 8*(9*Demod.len + Demod.bitCount + 1);
                        } else {                                                                                                        // no modulation in both halves - End of communication
                                }
                                Demod.endTime = Demod.startTime + 8*(9*Demod.len + Demod.bitCount + 1);
                        } else {                                                                                                        // no modulation in both halves - End of communication

-                               if (Demod.len > 0 || Demod.bitCount > 0) {                              // received something
-                                       if(Demod.bitCount > 0) {                                                        // if we decoded bits
-                                               Demod.shiftReg >>= (9 - Demod.bitCount);                // add the remaining decoded bits to the output
-                                               Demod.output[Demod.len++] = Demod.shiftReg & 0xff;
-                                               // No parity bit, so just shift a 0
-                                               Demod.parityBits <<= 1;
-                                       }
-                                       return TRUE;                                                                            // we are finished with decoding the raw data sequence
+                                       if(Demod.bitCount > 0) { // there are some remaining data bits
+                                               Demod.shiftReg >>= (9 - Demod.bitCount); // right align the decoded bits
+                                               Demod.output[Demod.len++] = Demod.shiftReg & 0xff; // and add them to the output
+                                               Demod.parityBits <<= 1; // add a (void) parity bit
+                                               Demod.parityBits <<= (8 - (Demod.len & 0x0007)); // left align remaining parity bits
+                                               Demod.parity[Demod.parityLen++] = Demod.parityBits; // and store them
+                                               return TRUE;
+                                       } else if (Demod.len & 0x0007) { // there are some parity bits to store
+                                               Demod.parityBits <<= (8 - (Demod.len & 0x0007)); // left align remaining parity bits
+                                               Demod.parity[Demod.parityLen++] = Demod.parityBits; // and store them
+                                       return TRUE; // we are finished with decoding the raw data sequence

                                } else {                                                                                                // nothing received. Start over
                                        DemodReset();
                                }
                                } else {                                                                                                // nothing received. Start over
                                        DemodReset();
                                }


@@ -517,10 +596,13 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {
        // The command (reader -> tag) that we're receiving.
        // The length of a received command will in most cases be no more than 18 bytes.
        // So 32 should be enough!
        // The command (reader -> tag) that we're receiving.
        // The length of a received command will in most cases be no more than 18 bytes.
        // So 32 should be enough!

-       uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
+       uint8_t *receivedCmd = ((uint8_t *)BigBuf) + RECV_CMD_OFFSET;
+       uint8_t *receivedCmdPar = ((uint8_t *)BigBuf) + RECV_CMD_PAR_OFFSET;
+       

        // The response (tag -> reader) that we're receiving.
        // The response (tag -> reader) that we're receiving.

-       uint8_t *receivedResponse = (((uint8_t *)BigBuf) + RECV_RES_OFFSET);
-
+       uint8_t *receivedResponse = ((uint8_t *)BigBuf) + RECV_RESP_OFFSET;
+       uint8_t *receivedResponsePar = ((uint8_t *)BigBuf) + RECV_RESP_PAR_OFFSET;
+       

        // As we receive stuff, we copy it from receivedCmd or receivedResponse
        // into trace, along with its length and other annotations.
        //uint8_t *trace = (uint8_t *)BigBuf;
        // As we receive stuff, we copy it from receivedCmd or receivedResponse
        // into trace, along with its length and other annotations.
        //uint8_t *trace = (uint8_t *)BigBuf;


@@ -537,10 +619,10 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {
        iso14443a_setup(FPGA_HF_ISO14443A_SNIFFER);
 
        // Set up the demodulator for tag -> reader responses.
        iso14443a_setup(FPGA_HF_ISO14443A_SNIFFER);
 
        // Set up the demodulator for tag -> reader responses.

-       Demod.output = receivedResponse;
+       DemodInit(receivedResponse, receivedResponsePar);

 
        // Set up the demodulator for the reader -> tag commands
 
        // Set up the demodulator for the reader -> tag commands

-       Uart.output = receivedCmd;
+       UartInit(receivedCmd, receivedCmdPar);

 
        // Setup and start DMA.
        FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE);
 
        // Setup and start DMA.
        FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE);


@@ -598,8 +680,12 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {
                                        if ((!triggered) && (param & 0x02) && (Uart.len == 1) && (Uart.bitCount == 7)) triggered = TRUE;
 
                                        if(triggered) {
                                        if ((!triggered) && (param & 0x02) && (Uart.len == 1) && (Uart.bitCount == 7)) triggered = TRUE;
 
                                        if(triggered) {

-                                               if (!LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, Uart.parityBits, TRUE)) break;
-                                               if (!LogTrace(NULL, 0, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, 0, TRUE)) break;
+                                               if (!LogTrace(receivedCmd,
+                                                       Uart.len,
+                                                       Uart.startTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER,
+                                                       Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER,
+                                                       Uart.parity,
+                                                       TRUE)) break;

                                        }
                                        /* And ready to receive another command. */
                                        UartReset();
                                        }
                                        /* And ready to receive another command. */
                                        UartReset();


@@ -616,8 +702,12 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {
                                if(ManchesterDecoding(tagdata, 0, (rsamples-1)*4)) {
                                        LED_B_ON();
 
                                if(ManchesterDecoding(tagdata, 0, (rsamples-1)*4)) {
                                        LED_B_ON();
 

-                                       if (!LogTrace(receivedResponse, Demod.len, Demod.startTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER, Demod.parityBits, FALSE)) break;
-                                       if (!LogTrace(NULL, 0, Demod.endTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER, 0, FALSE)) break;
+                                       if (!LogTrace(receivedResponse,
+                                               Demod.len,
+                                               Demod.startTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER,
+                                               Demod.endTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER,
+                                               Demod.parity,
+                                               FALSE)) break;

 
                                        if ((!triggered) && (param & 0x01)) triggered = TRUE;
 
 
                                        if ((!triggered) && (param & 0x01)) triggered = TRUE;
 


@@ -648,10 +738,8 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {
 //-----------------------------------------------------------------------------
 // Prepare tag messages
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // Prepare tag messages
 //-----------------------------------------------------------------------------

-static void CodeIso14443aAsTagPar(const uint8_t *cmd, int len, uint32_t dwParity)
+static void CodeIso14443aAsTagPar(const uint8_t *cmd,  uint16_t len, uint8_t *parity)

 {
 {

-       int i;
-

        ToSendReset();
 
        // Correction bit, might be removed when not needed
        ToSendReset();
 
        // Correction bit, might be removed when not needed


@@ -668,12 +756,11 @@ static void CodeIso14443aAsTagPar(const uint8_t *cmd, int len, uint32_t dwParity
        ToSend[++ToSendMax] = SEC_D;
        LastProxToAirDuration = 8 * ToSendMax - 4;
 
        ToSend[++ToSendMax] = SEC_D;
        LastProxToAirDuration = 8 * ToSendMax - 4;
 

-       for(i = 0; i < len; i++) {
-               int j;
+       for( uint16_t i = 0; i < len; i++) {

                uint8_t b = cmd[i];
 
                // Data bits
                uint8_t b = cmd[i];
 
                // Data bits

-               for(j = 0; j < 8; j++) {
+               for(uint16_t j = 0; j < 8; j++) {

                        if(b & 1) {
                                ToSend[++ToSendMax] = SEC_D;
                        } else {
                        if(b & 1) {
                                ToSend[++ToSendMax] = SEC_D;
                        } else {


@@ -683,7 +770,7 @@ static void CodeIso14443aAsTagPar(const uint8_t *cmd, int len, uint32_t dwParity
                }
 
                // Get the parity bit
                }
 
                // Get the parity bit

-               if ((dwParity >> i) & 0x01) {
+               if (parity[i>>3] & (0x80>>(i&0x0007))) {

                        ToSend[++ToSendMax] = SEC_D;
                        LastProxToAirDuration = 8 * ToSendMax - 4;
                } else {
                        ToSend[++ToSendMax] = SEC_D;
                        LastProxToAirDuration = 8 * ToSendMax - 4;
                } else {


@@ -699,8 +786,12 @@ static void CodeIso14443aAsTagPar(const uint8_t *cmd, int len, uint32_t dwParity
        ToSendMax++;
 }
 
        ToSendMax++;
 }
 

-static void CodeIso14443aAsTag(const uint8_t *cmd, int len){
-       CodeIso14443aAsTagPar(cmd, len, GetParity(cmd, len));
+static void CodeIso14443aAsTag(const uint8_t *cmd, uint16_t len)
+{
+       uint8_t par[MAX_PARITY_SIZE];
+       
+       GetParity(cmd, len, par);
+       CodeIso14443aAsTagPar(cmd, len, par);

 }
 
 
 }
 
 


@@ -747,7 +838,7 @@ static void Code4bitAnswerAsTag(uint8_t cmd)
 // Stop when button is pressed
 // Or return TRUE when command is captured
 //-----------------------------------------------------------------------------
 // Stop when button is pressed
 // Or return TRUE when command is captured
 //-----------------------------------------------------------------------------

-static int GetIso14443aCommandFromReader(uint8_t *received, int *len, int maxLen)
+static int GetIso14443aCommandFromReader(uint8_t *received, uint8_t *parity, int *len)

 {
     // Set FPGA mode to "simulated ISO 14443 tag", no modulation (listen
     // only, since we are receiving, not transmitting).
 {
     // Set FPGA mode to "simulated ISO 14443 tag", no modulation (listen
     // only, since we are receiving, not transmitting).


@@ -756,8 +847,7 @@ static int GetIso14443aCommandFromReader(uint8_t *received, int *len, int maxLen
     FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);
 
     // Now run a `software UART' on the stream of incoming samples.
     FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);
 
     // Now run a `software UART' on the stream of incoming samples.

-       UartReset();
-    Uart.output = received;
+       UartInit(received, parity);

 
        // clear RXRDY:
     uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
 
        // clear RXRDY:
     uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;


@@ -777,16 +867,15 @@ static int GetIso14443aCommandFromReader(uint8_t *received, int *len, int maxLen
     }
 }
 
     }
 }
 

-static int EmSendCmd14443aRaw(uint8_t *resp, int respLen, bool correctionNeeded);
+static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNeeded);

 int EmSend4bitEx(uint8_t resp, bool correctionNeeded);
 int EmSend4bit(uint8_t resp);
 int EmSend4bitEx(uint8_t resp, bool correctionNeeded);
 int EmSend4bit(uint8_t resp);

-int EmSendCmdExPar(uint8_t *resp, int respLen, bool correctionNeeded, uint32_t par);
-int EmSendCmdExPar(uint8_t *resp, int respLen, bool correctionNeeded, uint32_t par);
-int EmSendCmdEx(uint8_t *resp, int respLen, bool correctionNeeded);
-int EmSendCmd(uint8_t *resp, int respLen);
-int EmSendCmdPar(uint8_t *resp, int respLen, uint32_t par);
-bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_StartTime, uint32_t reader_EndTime, uint32_t reader_Parity,
-                                uint8_t *tag_data, uint16_t tag_len, uint32_t tag_StartTime, uint32_t tag_EndTime, uint32_t tag_Parity);
+int EmSendCmdExPar(uint8_t *resp, uint16_t respLen, bool correctionNeeded, uint8_t *par);
+int EmSendCmdEx(uint8_t *resp, uint16_t respLen, bool correctionNeeded);
+int EmSendCmd(uint8_t *resp, uint16_t respLen);
+int EmSendCmdPar(uint8_t *resp, uint16_t respLen, uint8_t *par);
+bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_StartTime, uint32_t reader_EndTime, uint8_t *reader_Parity,
+                                uint8_t *tag_data, uint16_t tag_len, uint32_t tag_StartTime, uint32_t tag_EndTime, uint8_t *tag_Parity);

 
 static uint8_t* free_buffer_pointer = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);
 
 
 static uint8_t* free_buffer_pointer = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);
 


@@ -839,7 +928,7 @@ bool prepare_allocated_tag_modulation(tag_response_info_t* response_info) {
   response_info->modulation = free_buffer_pointer;
   
   // Determine the maximum size we can use from our buffer
   response_info->modulation = free_buffer_pointer;
   
   // Determine the maximum size we can use from our buffer

-  size_t max_buffer_size = (((uint8_t *)BigBuf)+FREE_BUFFER_OFFSET+FREE_BUFFER_SIZE)-free_buffer_pointer;
+  size_t max_buffer_size = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + FREE_BUFFER_SIZE) - free_buffer_pointer;

   
   // Forward the prepare tag modulation function to the inner function
   if (prepare_tag_modulation(response_info,max_buffer_size)) {
   
   // Forward the prepare tag modulation function to the inner function
   if (prepare_tag_modulation(response_info,max_buffer_size)) {


@@ -891,6 +980,12 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
                        response1[1] = 0x00;
                        sak = 0x28;
                } break;
                        response1[1] = 0x00;
                        sak = 0x28;
                } break;

+               case 5: { // MIFARE TNP3XXX
+                       // Says: I am a toy
+                       response1[0] = 0x01;
+                       response1[1] = 0x0f;
+                       sak = 0x01;
+               } break;                

                default: {
                        Dbprintf("Error: unkown tagtype (%d)",tagType);
                        return;
                default: {
                        Dbprintf("Error: unkown tagtype (%d)",tagType);
                        return;


@@ -932,7 +1027,11 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
        ComputeCrc14443(CRC_14443_A, response3a, 1, &response3a[1], &response3a[2]);
 
        uint8_t response5[] = { 0x00, 0x00, 0x00, 0x00 }; // Very random tag nonce
        ComputeCrc14443(CRC_14443_A, response3a, 1, &response3a[1], &response3a[2]);
 
        uint8_t response5[] = { 0x00, 0x00, 0x00, 0x00 }; // Very random tag nonce

-       uint8_t response6[] = { 0x04, 0x58, 0x00, 0x02, 0x00, 0x00 }; // dummy ATS (pseudo-ATR), answer to RATS
+       uint8_t response6[] = { 0x04, 0x58, 0x80, 0x02, 0x00, 0x00 }; // dummy ATS (pseudo-ATR), answer to RATS:
+       // Format byte = 0x58: FSCI=0x08 (FSC=256), TA(1) and TC(1) present,
+       // TA(1) = 0x80: different divisors not supported, DR = 1, DS = 1
+       // TB(1) = not present. Defaults: FWI = 4 (FWT = 256 * 16 * 2^4 * 1/fc = 4833us), SFGI = 0 (SFG = 256 * 16 * 2^0 * 1/fc = 302us)
+       // TC(1) = 0x02: CID supported, NAD not supported

        ComputeCrc14443(CRC_14443_A, response6, 4, &response6[4], &response6[5]);
 
        #define TAG_RESPONSE_COUNT 7
        ComputeCrc14443(CRC_14443_A, response6, 4, &response6[4], &response6[5]);
 
        #define TAG_RESPONSE_COUNT 7


@@ -968,7 +1067,6 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
                prepare_allocated_tag_modulation(&responses[i]);
        }
 
                prepare_allocated_tag_modulation(&responses[i]);
        }
 

-       uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);

        int len = 0;
 
        // To control where we are in the protocol
        int len = 0;
 
        // To control where we are in the protocol


@@ -983,6 +1081,10 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
        // We need to listen to the high-frequency, peak-detected path.
        iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);
 
        // We need to listen to the high-frequency, peak-detected path.
        iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);
 

+       // buffers used on software Uart:
+       uint8_t *receivedCmd = ((uint8_t *)BigBuf) + RECV_CMD_OFFSET;
+       uint8_t *receivedCmdPar = ((uint8_t *)BigBuf) + RECV_CMD_PAR_OFFSET;
+       

        cmdsRecvd = 0;
        tag_response_info_t* p_response;
 
        cmdsRecvd = 0;
        tag_response_info_t* p_response;
 


@@ -990,14 +1092,13 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
        for(;;) {
                // Clean receive command buffer
                
        for(;;) {
                // Clean receive command buffer
                

-               if(!GetIso14443aCommandFromReader(receivedCmd, &len, RECV_CMD_SIZE)) {
+               if(!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) {

                        DbpString("Button press");
                        DbpString("Button press");

-                       break;
+                       break;  

                }
 
                p_response = NULL;
                
                }
 
                p_response = NULL;
                

-               // doob - added loads of debug strings so we can see what the reader is saying to us during the sim as hi14alist is not populated

                // Okay, look at the command now.
                lastorder = order;
                if(receivedCmd[0] == 0x26) { // Received a REQUEST
                // Okay, look at the command now.
                lastorder = order;
                if(receivedCmd[0] == 0x26) { // Received a REQUEST


@@ -1006,22 +1107,21 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
                        p_response = &responses[0]; order = 6;
                } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x93) {   // Received request for UID (cascade 1)
                        p_response = &responses[1]; order = 2;
                        p_response = &responses[0]; order = 6;
                } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x93) {   // Received request for UID (cascade 1)
                        p_response = &responses[1]; order = 2;

-               } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x95) { // Received request for UID (cascade 2)
+               } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x95) {   // Received request for UID (cascade 2)

                        p_response = &responses[2]; order = 20;
                } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x93) {   // Received a SELECT (cascade 1)
                        p_response = &responses[3]; order = 3;
                } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x95) {   // Received a SELECT (cascade 2)
                        p_response = &responses[4]; order = 30;
                } else if(receivedCmd[0] == 0x30) {     // Received a (plain) READ
                        p_response = &responses[2]; order = 20;
                } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x93) {   // Received a SELECT (cascade 1)
                        p_response = &responses[3]; order = 3;
                } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x95) {   // Received a SELECT (cascade 2)
                        p_response = &responses[4]; order = 30;
                } else if(receivedCmd[0] == 0x30) {     // Received a (plain) READ

-                       EmSendCmdEx(data+(4*receivedCmd[0]),16,false);
+                       EmSendCmdEx(data+(4*receivedCmd[1]),16,false);

                        // Dbprintf("Read request from reader: %x %x",receivedCmd[0],receivedCmd[1]);
                        // We already responded, do not send anything with the EmSendCmd14443aRaw() that is called below
                        p_response = NULL;
                } else if(receivedCmd[0] == 0x50) {     // Received a HALT
                        // Dbprintf("Read request from reader: %x %x",receivedCmd[0],receivedCmd[1]);
                        // We already responded, do not send anything with the EmSendCmd14443aRaw() that is called below
                        p_response = NULL;
                } else if(receivedCmd[0] == 0x50) {     // Received a HALT

-//                     DbpString("Reader requested we HALT!:");
+

                        if (tracing) {
                        if (tracing) {

-                               LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                               LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                               LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                        }
                        p_response = NULL;
                } else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) {   // Received an authentication request
                        }
                        p_response = NULL;
                } else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) {   // Received an authentication request


@@ -1033,10 +1133,9 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
                        } else {
                                p_response = &responses[6]; order = 70;
                        }
                        } else {
                                p_response = &responses[6]; order = 70;
                        }

-               } else if (order == 7 && len == 8) { // Received authentication request
+               } else if (order == 7 && len == 8) { // Received {nr] and {ar} (part of authentication)

                        if (tracing) {
                        if (tracing) {

-                               LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                               LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                               LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                        }
                        uint32_t nr = bytes_to_num(receivedCmd,4);
                        uint32_t ar = bytes_to_num(receivedCmd+4,4);
                        }
                        uint32_t nr = bytes_to_num(receivedCmd,4);
                        uint32_t ar = bytes_to_num(receivedCmd+4,4);


@@ -1080,8 +1179,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
                                default: {
                                        // Never seen this command before
                                        if (tracing) {
                                default: {
                                        // Never seen this command before
                                        if (tracing) {

-                                               LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                               LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                               LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        }
                                        Dbprintf("Received unknown command (len=%d):",len);
                                        Dbhexdump(len,receivedCmd,false);
                                        }
                                        Dbprintf("Received unknown command (len=%d):",len);
                                        Dbhexdump(len,receivedCmd,false);


@@ -1101,8 +1199,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
                                if (prepare_tag_modulation(&dynamic_response_info,DYNAMIC_MODULATION_BUFFER_SIZE) == false) {
                                        Dbprintf("Error preparing tag response");
                                        if (tracing) {
                                if (prepare_tag_modulation(&dynamic_response_info,DYNAMIC_MODULATION_BUFFER_SIZE) == false) {
                                        Dbprintf("Error preparing tag response");
                                        if (tracing) {

-                                               LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                               LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                               LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        }
                                        break;
                                }
                                        }
                                        break;
                                }


@@ -1125,16 +1222,19 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)
                if (p_response != NULL) {
                        EmSendCmd14443aRaw(p_response->modulation, p_response->modulation_n, receivedCmd[0] == 0x52);
                        // do the tracing for the previous reader request and this tag answer:
                if (p_response != NULL) {
                        EmSendCmd14443aRaw(p_response->modulation, p_response->modulation_n, receivedCmd[0] == 0x52);
                        // do the tracing for the previous reader request and this tag answer:

+                       uint8_t par[MAX_PARITY_SIZE];
+                       GetParity(p_response->response, p_response->response_n, par);
+       

                        EmLogTrace(Uart.output, 
                                                Uart.len, 
                                                Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, 
                                                Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 
                        EmLogTrace(Uart.output, 
                                                Uart.len, 
                                                Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, 
                                                Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 

-                                               Uart.parityBits,
+                                               Uart.parity,

                                                p_response->response, 
                                                p_response->response_n,
                                                LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG,
                                                (LastTimeProxToAirStart + p_response->ProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, 
                                                p_response->response, 
                                                p_response->response_n,
                                                LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG,
                                                (LastTimeProxToAirStart + p_response->ProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, 

-                                               SwapBits(GetParity(p_response->response, p_response->response_n), p_response->response_n));
+                                               par);

                }
                
                if (!tracing) {
                }
                
                if (!tracing) {


@@ -1180,7 +1280,7 @@ void PrepareDelayedTransfer(uint16_t delay)
 // if == 0:    transfer immediately and return time of transfer
 // if != 0: delay transfer until time specified
 //-------------------------------------------------------------------------------------
 // if == 0:    transfer immediately and return time of transfer
 // if != 0: delay transfer until time specified
 //-------------------------------------------------------------------------------------

-static void TransmitFor14443a(const uint8_t *cmd, int len, uint32_t *timing)
+static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing)

 {
        
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
 {
        
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);


@@ -1205,13 +1305,6 @@ static void TransmitFor14443a(const uint8_t *cmd, int len, uint32_t *timing)
        // clear TXRDY
        AT91C_BASE_SSC->SSC_THR = SEC_Y;
 
        // clear TXRDY
        AT91C_BASE_SSC->SSC_THR = SEC_Y;
 

-       // for(uint16_t c = 0; c < 10;) {       // standard delay for each transfer (allow tag to be ready after last transmission)
-               // if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
-                       // AT91C_BASE_SSC->SSC_THR = SEC_Y;     
-                       // c++;
-               // }
-       // }
-

        uint16_t c = 0;
        for(;;) {
                if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
        uint16_t c = 0;
        for(;;) {
                if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {


@@ -1223,15 +1316,14 @@ static void TransmitFor14443a(const uint8_t *cmd, int len, uint32_t *timing)
                }
        }
        
                }
        }
        

-       NextTransferTime = MAX(NextTransferTime, LastTimeProxToAirStart + REQUEST_GUARD_TIME);
-       
+       NextTransferTime = MAX(NextTransferTime, LastTimeProxToAirStart + REQUEST_GUARD_TIME);  

 }
 
 
 //-----------------------------------------------------------------------------
 // Prepare reader command (in bits, support short frames) to send to FPGA
 //-----------------------------------------------------------------------------
 }
 
 
 //-----------------------------------------------------------------------------
 // Prepare reader command (in bits, support short frames) to send to FPGA
 //-----------------------------------------------------------------------------

-void CodeIso14443aBitsAsReaderPar(const uint8_t * cmd, int bits, uint32_t dwParity)
+void CodeIso14443aBitsAsReaderPar(const uint8_t * cmd, uint16_t bits, const uint8_t *parity)

 {
        int i, j;
        int last;
 {
        int i, j;
        int last;


@@ -1271,10 +1363,10 @@ void CodeIso14443aBitsAsReaderPar(const uint8_t * cmd, int bits, uint32_t dwPari
                        b >>= 1;
                }
 
                        b >>= 1;
                }
 

-               // Only transmit (last) parity bit if we transmitted a complete byte
+               // Only transmit parity bit if we transmitted a complete byte

                if (j == 8) {
                        // Get the parity bit
                if (j == 8) {
                        // Get the parity bit

-                       if ((dwParity >> i) & 0x01) {
+                       if (parity[i>>3] & (0x80 >> (i&0x0007))) {

                                // Sequence X
                                ToSend[++ToSendMax] = SEC_X;
                                LastProxToAirDuration = 8 * (ToSendMax+1) - 2;
                                // Sequence X
                                ToSend[++ToSendMax] = SEC_X;
                                LastProxToAirDuration = 8 * (ToSendMax+1) - 2;


@@ -1312,9 +1404,9 @@ void CodeIso14443aBitsAsReaderPar(const uint8_t * cmd, int bits, uint32_t dwPari
 //-----------------------------------------------------------------------------
 // Prepare reader command to send to FPGA
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // Prepare reader command to send to FPGA
 //-----------------------------------------------------------------------------

-void CodeIso14443aAsReaderPar(const uint8_t * cmd, int len, uint32_t dwParity)
+void CodeIso14443aAsReaderPar(const uint8_t * cmd, uint16_t len, const uint8_t *parity)

 {
 {

-  CodeIso14443aBitsAsReaderPar(cmd,len*8,dwParity);
+  CodeIso14443aBitsAsReaderPar(cmd, len*8, parity);

 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------


@@ -1322,7 +1414,7 @@ void CodeIso14443aAsReaderPar(const uint8_t * cmd, int len, uint32_t dwParity)
 // Stop when button is pressed (return 1) or field was gone (return 2)
 // Or return 0 when command is captured
 //-----------------------------------------------------------------------------
 // Stop when button is pressed (return 1) or field was gone (return 2)
 // Or return 0 when command is captured
 //-----------------------------------------------------------------------------

-static int EmGetCmd(uint8_t *received, int *len)
+static int EmGetCmd(uint8_t *received, uint16_t *len, uint8_t *parity)

 {
        *len = 0;
 
 {
        *len = 0;
 


@@ -1347,8 +1439,7 @@ static int EmGetCmd(uint8_t *received, int *len)
        AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
        
        // Now run a 'software UART' on the stream of incoming samples.
        AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
        
        // Now run a 'software UART' on the stream of incoming samples.

-       UartReset();
-       Uart.output = received;
+       UartInit(received, parity);

 
        // Clear RXRDY:
     uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
 
        // Clear RXRDY:
     uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;


@@ -1389,7 +1480,7 @@ static int EmGetCmd(uint8_t *received, int *len)
 }
 
 
 }
 
 

-static int EmSendCmd14443aRaw(uint8_t *resp, int respLen, bool correctionNeeded)
+static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNeeded)

 {
        uint8_t b;
        uint16_t i = 0;
 {
        uint8_t b;
        uint16_t i = 0;


@@ -1456,16 +1547,18 @@ int EmSend4bitEx(uint8_t resp, bool correctionNeeded){
        Code4bitAnswerAsTag(resp);
        int res = EmSendCmd14443aRaw(ToSend, ToSendMax, correctionNeeded);
        // do the tracing for the previous reader request and this tag answer:
        Code4bitAnswerAsTag(resp);
        int res = EmSendCmd14443aRaw(ToSend, ToSendMax, correctionNeeded);
        // do the tracing for the previous reader request and this tag answer:

+       uint8_t par[1];
+       GetParity(&resp, 1, par);

        EmLogTrace(Uart.output, 
                                Uart.len, 
                                Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, 
                                Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 
        EmLogTrace(Uart.output, 
                                Uart.len, 
                                Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, 
                                Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 

-                               Uart.parityBits,
+                               Uart.parity,

                                &resp, 
                                1, 
                                LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG,
                                (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, 
                                &resp, 
                                1, 
                                LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG,
                                (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, 

-                               SwapBits(GetParity(&resp, 1), 1));
+                               par);

        return res;
 }
 
        return res;
 }
 


@@ -1473,7 +1566,7 @@ int EmSend4bit(uint8_t resp){
        return EmSend4bitEx(resp, false);
 }
 
        return EmSend4bitEx(resp, false);
 }
 

-int EmSendCmdExPar(uint8_t *resp, int respLen, bool correctionNeeded, uint32_t par){
+int EmSendCmdExPar(uint8_t *resp, uint16_t respLen, bool correctionNeeded, uint8_t *par){

        CodeIso14443aAsTagPar(resp, respLen, par);
        int res = EmSendCmd14443aRaw(ToSend, ToSendMax, correctionNeeded);
        // do the tracing for the previous reader request and this tag answer:
        CodeIso14443aAsTagPar(resp, respLen, par);
        int res = EmSendCmd14443aRaw(ToSend, ToSendMax, correctionNeeded);
        // do the tracing for the previous reader request and this tag answer:


@@ -1481,51 +1574,48 @@ int EmSendCmdExPar(uint8_t *resp, int respLen, bool correctionNeeded, uint32_t p
                                Uart.len, 
                                Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, 
                                Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 
                                Uart.len, 
                                Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, 
                                Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 

-                               Uart.parityBits,
+                               Uart.parity,

                                resp, 
                                respLen, 
                                LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG,
                                (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, 
                                resp, 
                                respLen, 
                                LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG,
                                (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, 

-                               SwapBits(GetParity(resp, respLen), respLen));
+                               par);

        return res;
 }
 
        return res;
 }
 

-int EmSendCmdEx(uint8_t *resp, int respLen, bool correctionNeeded){
-       return EmSendCmdExPar(resp, respLen, correctionNeeded, GetParity(resp, respLen));
+int EmSendCmdEx(uint8_t *resp, uint16_t respLen, bool correctionNeeded){
+       uint8_t par[MAX_PARITY_SIZE];
+       GetParity(resp, respLen, par);
+       return EmSendCmdExPar(resp, respLen, correctionNeeded, par);

 }
 }

-
-int EmSendCmd(uint8_t *resp, int respLen){
-       return EmSendCmdExPar(resp, respLen, false, GetParity(resp, respLen));
+       
+int EmSendCmd(uint8_t *resp, uint16_t respLen){
+       uint8_t par[MAX_PARITY_SIZE];
+       GetParity(resp, respLen, par);
+       return EmSendCmdExPar(resp, respLen, false, par);

 }
 
 }
 

-int EmSendCmdPar(uint8_t *resp, int respLen, uint32_t par){
+int EmSendCmdPar(uint8_t *resp, uint16_t respLen, uint8_t *par){

        return EmSendCmdExPar(resp, respLen, false, par);
 }
 
        return EmSendCmdExPar(resp, respLen, false, par);
 }
 

-bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_StartTime, uint32_t reader_EndTime, uint32_t reader_Parity,
-                                uint8_t *tag_data, uint16_t tag_len, uint32_t tag_StartTime, uint32_t tag_EndTime, uint32_t tag_Parity)
+bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_StartTime, uint32_t reader_EndTime, uint8_t *reader_Parity,
+                                uint8_t *tag_data, uint16_t tag_len, uint32_t tag_StartTime, uint32_t tag_EndTime, uint8_t *tag_Parity)

 {
 {

-       if (tracing) {
-               // we cannot exactly measure the end and start of a received command from reader. However we know that the delay from
-               // end of the received command to start of the tag's (simulated by us) answer is n*128+20 or n*128+84 resp.
-               // with n >= 9. The start of the tags answer can be measured and therefore the end of the received command be calculated:
-               uint16_t reader_modlen = reader_EndTime - reader_StartTime;
-               uint16_t approx_fdt = tag_StartTime - reader_EndTime;
-               uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20;
-               reader_EndTime = tag_StartTime - exact_fdt;
-               reader_StartTime = reader_EndTime - reader_modlen;
-               if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_Parity, TRUE)) {
-                       return FALSE;
-               } else if (!LogTrace(NULL, 0, reader_EndTime, 0, TRUE)) {
-                       return FALSE;
-               } else if (!LogTrace(tag_data, tag_len, tag_StartTime, tag_Parity, FALSE)) {
-                       return FALSE;
-               } else {
-                       return (!LogTrace(NULL, 0, tag_EndTime, 0, FALSE));
-               }
-       } else {
-               return TRUE;
-       }
+       if (!tracing) return true;
+
+       // we cannot exactly measure the end and start of a received command from reader. However we know that the delay from
+       // end of the received command to start of the tag's (simulated by us) answer is n*128+20 or n*128+84 resp.
+       // with n >= 9. The start of the tags answer can be measured and therefore the end of the received command be calculated:
+       uint16_t reader_modlen = reader_EndTime - reader_StartTime;
+       uint16_t approx_fdt = tag_StartTime - reader_EndTime;
+       uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20;
+       reader_EndTime = tag_StartTime - exact_fdt;
+       reader_StartTime = reader_EndTime - reader_modlen;
+       if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_EndTime, reader_Parity, TRUE)) {
+               return FALSE;
+       } else 
+               return(!LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, FALSE));

 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------


@@ -1533,7 +1623,7 @@ bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_Start
 //  If a response is captured return TRUE
 //  If it takes too long return FALSE
 //-----------------------------------------------------------------------------
 //  If a response is captured return TRUE
 //  If it takes too long return FALSE
 //-----------------------------------------------------------------------------

-static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint16_t offset, int maxLen)
+static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receivedResponsePar, uint16_t offset)

 {
        uint16_t c;
        
 {
        uint16_t c;
        


@@ -1544,9 +1634,8 @@ static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint16_t offset,
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_LISTEN);
        
        // Now get the answer from the card
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_LISTEN);
        
        // Now get the answer from the card

-       DemodReset();
-       Demod.output = receivedResponse;
-
+       DemodInit(receivedResponse, receivedResponsePar);
+       

        // clear RXRDY:
     uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
        
        // clear RXRDY:
     uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
        


@@ -1559,17 +1648,16 @@ static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint16_t offset,
                        if(ManchesterDecoding(b, offset, 0)) {
                                NextTransferTime = MAX(NextTransferTime, Demod.endTime - (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/16 + FRAME_DELAY_TIME_PICC_TO_PCD);
                                return TRUE;
                        if(ManchesterDecoding(b, offset, 0)) {
                                NextTransferTime = MAX(NextTransferTime, Demod.endTime - (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/16 + FRAME_DELAY_TIME_PICC_TO_PCD);
                                return TRUE;

-                       } else if(c++ > iso14a_timeout) {
+                       } else if (c++ > iso14a_timeout) {

                                return FALSE; 
                        }
                }
        }
 }
 
                                return FALSE; 
                        }
                }
        }
 }
 

-void ReaderTransmitBitsPar(uint8_t* frame, int bits, uint32_t par, uint32_t *timing)
+void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t *timing)

 {
 {

-
-       CodeIso14443aBitsAsReaderPar(frame,bits,par);
+       CodeIso14443aBitsAsReaderPar(frame, bits, par);

   
        // Send command to tag
        TransmitFor14443a(ToSend, ToSendMax, timing);
   
        // Send command to tag
        TransmitFor14443a(ToSend, ToSendMax, timing);


@@ -1578,51 +1666,47 @@ void ReaderTransmitBitsPar(uint8_t* frame, int bits, uint32_t par, uint32_t *tim
   
        // Log reader command in trace buffer
        if (tracing) {
   
        // Log reader command in trace buffer
        if (tracing) {

-               LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, par, TRUE);
-               LogTrace(NULL, 0, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, 0, TRUE);
+               LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, par, TRUE);

        }
 }
 
        }
 }
 

-void ReaderTransmitPar(uint8_t* frame, int len, uint32_t par, uint32_t *timing)
+void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *timing)

 {
 {

-  ReaderTransmitBitsPar(frame,len*8,par, timing);
+  ReaderTransmitBitsPar(frame, len*8, par, timing);

 }
 
 }
 

-void ReaderTransmitBits(uint8_t* frame, int len, uint32_t *timing)
+void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing)

 {
 {

-  // Generate parity and redirect
-  ReaderTransmitBitsPar(frame,len,GetParity(frame,len/8), timing);
+       // Generate parity and redirect
+       uint8_t par[MAX_PARITY_SIZE];
+       GetParity(frame, len/8, par);
+       ReaderTransmitBitsPar(frame, len, par, timing);

 }
 
 }
 

-void ReaderTransmit(uint8_t* frame, int len, uint32_t *timing)
+void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing)

 {
 {

-  // Generate parity and redirect
-  ReaderTransmitBitsPar(frame,len*8,GetParity(frame,len), timing);
+       // Generate parity and redirect
+       uint8_t par[MAX_PARITY_SIZE];
+       GetParity(frame, len, par);
+       ReaderTransmitBitsPar(frame, len*8, par, timing);

 }
 
 }
 

-int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset)
+int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parity)

 {
 {

-       if (!GetIso14443aAnswerFromTag(receivedAnswer,offset,160)) return FALSE;
+       if (!GetIso14443aAnswerFromTag(receivedAnswer,parity,offset)) return FALSE;

        if (tracing) {
        if (tracing) {

-               LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.parityBits, FALSE);
-               LogTrace(NULL, 0, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, 0, FALSE);
+               LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE);

        }
        return Demod.len;
 }
 
        }
        return Demod.len;
 }
 

-int ReaderReceive(uint8_t* receivedAnswer)
+int ReaderReceive(uint8_t *receivedAnswer, uint8_t *parity)

 {
 {

-       return ReaderReceiveOffset(receivedAnswer, 0);
-}
+       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) return FALSE;

 
 

-int ReaderReceivePar(uint8_t *receivedAnswer, uint32_t *parptr)
-{
-       if (!GetIso14443aAnswerFromTag(receivedAnswer,0,160)) return FALSE;

        if (tracing) {
        if (tracing) {

-               LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.parityBits, FALSE);
-               LogTrace(NULL, 0, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, 0, FALSE);
+               LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE);

        }
        }

-       *parptr = Demod.parityBits;

        return Demod.len;
 }
 
        return Demod.len;
 }
 


@@ -1630,23 +1714,29 @@ int ReaderReceivePar(uint8_t *receivedAnswer, uint32_t *parptr)
  * fills the uid pointer unless NULL
  * fills resp_data unless NULL */
 int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, uint32_t* cuid_ptr) {
  * fills the uid pointer unless NULL
  * fills resp_data unless NULL */
 int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, uint32_t* cuid_ptr) {

-  uint8_t wupa[]       = { 0x52 };  // 0x26 - REQA  0x52 - WAKE-UP
-  uint8_t sel_all[]    = { 0x93,0x20 };
-  uint8_t sel_uid[]    = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  uint8_t rats[]       = { 0xE0,0x80,0x00,0x00 }; // FSD=256, FSDI=8, CID=0
-  uint8_t* resp = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);  // was 3560 - tied to other size changes
-  byte_t uid_resp[4];
-  size_t uid_resp_len;
+       uint8_t halt[]       = { 0x50 };  // HALT
+       uint8_t wupa[]       = { 0x52 };  // WAKE-UP
+       //uint8_t reqa[]       = { 0x26 };  // REQUEST A
+       uint8_t sel_all[]    = { 0x93,0x20 };
+       uint8_t sel_uid[]    = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t rats[]       = { 0xE0,0x80,0x00,0x00 }; // FSD=256, FSDI=8, CID=0
+       uint8_t *resp = ((uint8_t *)BigBuf) + RECV_RESP_OFFSET;
+       uint8_t *resp_par = ((uint8_t *)BigBuf) + RECV_RESP_PAR_OFFSET;
+
+       byte_t uid_resp[4];
+       size_t uid_resp_len;

 
   uint8_t sak = 0x04; // cascade uid
   int cascade_level = 0;
   int len;
 
   uint8_t sak = 0x04; // cascade uid
   int cascade_level = 0;
   int len;

-        
+       
+  ReaderTransmit(halt,sizeof(halt), NULL);
+       

   // Broadcast for a card, WUPA (0x52) will force response from all cards in the field
   // Broadcast for a card, WUPA (0x52) will force response from all cards in the field

-    ReaderTransmitBitsPar(wupa,7,0, NULL);
+  ReaderTransmitBitsPar(wupa,7,0, NULL);

        
   // Receive the ATQA
        
   // Receive the ATQA

-  if(!ReaderReceive(resp)) return 0;
+  if(!ReaderReceive(resp, resp_par)) return 0;

   // Dbprintf("atqa: %02x %02x",resp[0],resp[1]);
 
   if(p_hi14a_card) {
   // Dbprintf("atqa: %02x %02x",resp[0],resp[1]);
 
   if(p_hi14a_card) {


@@ -1669,7 +1759,7 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
 
     // SELECT_ALL
     ReaderTransmit(sel_all,sizeof(sel_all), NULL);
 
     // SELECT_ALL
     ReaderTransmit(sel_all,sizeof(sel_all), NULL);

-    if (!ReaderReceive(resp)) return 0;
+    if (!ReaderReceive(resp, resp_par)) return 0;

 
        if (Demod.collisionPos) {                       // we had a collision and need to construct the UID bit by bit
                memset(uid_resp, 0, 4);
 
        if (Demod.collisionPos) {                       // we had a collision and need to construct the UID bit by bit
                memset(uid_resp, 0, 4);


@@ -1691,7 +1781,7 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
                        }
                        collision_answer_offset = uid_resp_bits%8;
                        ReaderTransmitBits(sel_uid, 16 + uid_resp_bits, NULL);
                        }
                        collision_answer_offset = uid_resp_bits%8;
                        ReaderTransmitBits(sel_uid, 16 + uid_resp_bits, NULL);

-                       if (!ReaderReceiveOffset(resp, collision_answer_offset)) return 0;
+                       if (!ReaderReceiveOffset(resp, collision_answer_offset,resp_par)) return 0;

                }
                // finally, add the last bits and BCC of the UID
                for (uint16_t i = collision_answer_offset; i < (Demod.len-1)*8; i++, uid_resp_bits++) {
                }
                // finally, add the last bits and BCC of the UID
                for (uint16_t i = collision_answer_offset; i < (Demod.len-1)*8; i++, uid_resp_bits++) {


@@ -1703,7 +1793,7 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
                memcpy(uid_resp,resp,4);
        }
        uid_resp_len = 4;
                memcpy(uid_resp,resp,4);
        }
        uid_resp_len = 4;

-       // Dbprintf("uid: %02x %02x %02x %02x",uid_resp[0],uid_resp[1],uid_resp[2],uid_resp[3]);
+

 
     // calculate crypto UID. Always use last 4 Bytes.
     if(cuid_ptr) {
 
     // calculate crypto UID. Always use last 4 Bytes.
     if(cuid_ptr) {


@@ -1718,15 +1808,25 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
     ReaderTransmit(sel_uid,sizeof(sel_uid), NULL);
 
     // Receive the SAK
     ReaderTransmit(sel_uid,sizeof(sel_uid), NULL);
 
     // Receive the SAK

-    if (!ReaderReceive(resp)) return 0;
+    if (!ReaderReceive(resp, resp_par)) return 0;

     sak = resp[0];
 
     sak = resp[0];
 

+       //Dbprintf("SAK: %02x",resp[0]);
+       

     // Test if more parts of the uid are comming
     if ((sak & 0x04) /* && uid_resp[0] == 0x88 */) {
     // Test if more parts of the uid are comming
     if ((sak & 0x04) /* && uid_resp[0] == 0x88 */) {

-      // Remove first byte, 0x88 is not an UID byte, it CT, see page 3 of:
-      // http://www.nxp.com/documents/application_note/AN10927.pdf
-      memcpy(uid_resp, uid_resp + 1, 3);
-      uid_resp_len = 3;
+               // Remove first byte, 0x88 is not an UID byte, it CT, see page 3 of:
+               // http://www.nxp.com/documents/application_note/AN10927.pdf
+               // This was earlier:
+               //memcpy(uid_resp, uid_resp + 1, 3);
+               // But memcpy should not be used for overlapping arrays,
+               // and memmove appears to not be available in the arm build.
+               // Therefore:
+               uid_resp[0] = uid_resp[1];
+               uid_resp[1] = uid_resp[2];
+               uid_resp[2] = uid_resp[3]; 
+                
+               uid_resp_len = 3;

     }
 
     if(uid_ptr) {
     }
 
     if(uid_ptr) {


@@ -1752,7 +1852,7 @@ int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, u
   AppendCrc14443a(rats, 2);
   ReaderTransmit(rats, sizeof(rats), NULL);
 
   AppendCrc14443a(rats, 2);
   ReaderTransmit(rats, sizeof(rats), NULL);
 

-  if (!(len = ReaderReceive(resp))) return 0;
+  if (!(len = ReaderReceive(resp,resp_par))) return 0;

 
   if(p_hi14a_card) {
     memcpy(p_hi14a_card->ats, resp, sizeof(p_hi14a_card->ats));
 
   if(p_hi14a_card) {
     memcpy(p_hi14a_card->ats, resp, sizeof(p_hi14a_card->ats));


@@ -1772,8 +1872,7 @@ void iso14443a_setup(uint8_t fpga_minor_mode) {
        SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
 
        // Signal field is on with the appropriate LED
        SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
 
        // Signal field is on with the appropriate LED

-       if (fpga_minor_mode == FPGA_HF_ISO14443A_READER_MOD
-               || fpga_minor_mode == FPGA_HF_ISO14443A_READER_LISTEN) {
+       if (fpga_minor_mode == FPGA_HF_ISO14443A_READER_MOD     || fpga_minor_mode == FPGA_HF_ISO14443A_READER_LISTEN) {

                LED_D_ON();
        } else {
                LED_D_OFF();
                LED_D_ON();
        } else {
                LED_D_OFF();


@@ -1789,7 +1888,8 @@ void iso14443a_setup(uint8_t fpga_minor_mode) {
        iso14a_set_timeout(1050); // 10ms default  10*105 = 
 }
 
        iso14a_set_timeout(1050); // 10ms default  10*105 = 
 }
 

-int iso14_apdu(uint8_t * cmd, size_t cmd_len, void * data) {
+int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) {
+       uint8_t parity[MAX_PARITY_SIZE];

        uint8_t real_cmd[cmd_len+4];
        real_cmd[0] = 0x0a; //I-Block
        // put block number into the PCB
        uint8_t real_cmd[cmd_len+4];
        real_cmd[0] = 0x0a; //I-Block
        // put block number into the PCB


@@ -1799,7 +1899,7 @@ int iso14_apdu(uint8_t * cmd, size_t cmd_len, void * data) {
        AppendCrc14443a(real_cmd,cmd_len+2);
  
        ReaderTransmit(real_cmd, cmd_len+4, NULL);
        AppendCrc14443a(real_cmd,cmd_len+2);
  
        ReaderTransmit(real_cmd, cmd_len+4, NULL);

-       size_t len = ReaderReceive(data);
+       size_t len = ReaderReceive(data, parity);

        uint8_t * data_bytes = (uint8_t *) data;
        if (!len)
                return 0; //DATA LINK ERROR
        uint8_t * data_bytes = (uint8_t *) data;
        if (!len)
                return 0; //DATA LINK ERROR


@@ -1824,10 +1924,11 @@ void ReaderIso14443a(UsbCommand *c)
 {
        iso14a_command_t param = c->arg[0];
        uint8_t *cmd = c->d.asBytes;
 {
        iso14a_command_t param = c->arg[0];
        uint8_t *cmd = c->d.asBytes;

-       size_t len = c->arg[1] & 0xFFFF;
-       size_t lenbits = c->arg[1] >> 16;
+       size_t len = c->arg[1];
+       size_t lenbits = c->arg[2];

        uint32_t arg0 = 0;
        byte_t buf[USB_CMD_DATA_SIZE];
        uint32_t arg0 = 0;
        byte_t buf[USB_CMD_DATA_SIZE];

+       uint8_t par[MAX_PARITY_SIZE];

   
        if(param & ISO14A_CONNECT) {
                iso14a_clear_trace();
   
        if(param & ISO14A_CONNECT) {
                iso14a_clear_trace();


@@ -1861,15 +1962,15 @@ void ReaderIso14443a(UsbCommand *c)
                if(param & ISO14A_APPEND_CRC) {
                        AppendCrc14443a(cmd,len);
                        len += 2;
                if(param & ISO14A_APPEND_CRC) {
                        AppendCrc14443a(cmd,len);
                        len += 2;

-                       lenbits += 16; 
+                       if (lenbits) lenbits += 16;

                }
                }

-               if(lenbits>0) {
-
-                       ReaderTransmitBitsPar(cmd,lenbits,GetParity(cmd,lenbits/8), NULL);
+               if(lenbits>0) {         
+                       GetParity(cmd, lenbits/8, par);         
+                       ReaderTransmitBitsPar(cmd, lenbits, par, NULL);

                } else {
                        ReaderTransmit(cmd,len, NULL);
                }
                } else {
                        ReaderTransmit(cmd,len, NULL);
                }

-               arg0 = ReaderReceive(buf);
+               arg0 = ReaderReceive(buf, par);

                cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));
        }
 
                cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));
        }
 


@@ -1923,23 +2024,24 @@ void ReaderMifare(bool first_try)
        uint8_t mf_nr_ar[]   = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
        static uint8_t mf_nr_ar3;
 
        uint8_t mf_nr_ar[]   = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
        static uint8_t mf_nr_ar3;
 

-       uint8_t* receivedAnswer = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);
+       uint8_t* receivedAnswer = (((uint8_t *)BigBuf) + RECV_RESP_OFFSET);
+       uint8_t* receivedAnswerPar = (((uint8_t *)BigBuf) + RECV_RESP_PAR_OFFSET);

 
        iso14a_clear_trace();
        iso14a_set_tracing(TRUE);
 
        byte_t nt_diff = 0;
 
        iso14a_clear_trace();
        iso14a_set_tracing(TRUE);
 
        byte_t nt_diff = 0;

-       byte_t par = 0;
-       //byte_t par_mask = 0xff;
+       uint8_t par[1] = {0};   // maximum 8 Bytes to be sent here, 1 byte parity is therefore enough

        static byte_t par_low = 0;
        bool led_on = TRUE;
        static byte_t par_low = 0;
        bool led_on = TRUE;

-       uint8_t uid[10];
+       uint8_t uid[10]  ={0};

        uint32_t cuid;
 
        uint32_t cuid;
 

-       uint32_t nt, previous_nt;
+       uint32_t nt = 0;
+       uint32_t previous_nt = 0;

        static uint32_t nt_attacked = 0;
        static uint32_t nt_attacked = 0;

-       byte_t par_list[8] = {0,0,0,0,0,0,0,0};
-       byte_t ks_list[8] = {0,0,0,0,0,0,0,0};
+       byte_t par_list[8] = {0x00};
+       byte_t ks_list[8] = {0x00};

 
        static uint32_t sync_time;
        static uint32_t sync_cycles;
 
        static uint32_t sync_time;
        static uint32_t sync_cycles;


@@ -1948,8 +2050,6 @@ void ReaderMifare(bool first_try)
        uint16_t consecutive_resyncs = 0;
        int isOK = 0;
 
        uint16_t consecutive_resyncs = 0;
        int isOK = 0;
 

-
-

        if (first_try) { 
                mf_nr_ar3 = 0;
                iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
        if (first_try) { 
                mf_nr_ar3 = 0;
                iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);


@@ -1957,14 +2057,13 @@ void ReaderMifare(bool first_try)
                sync_cycles = 65536;                                                                    // theory: Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).
                nt_attacked = 0;
                nt = 0;
                sync_cycles = 65536;                                                                    // theory: Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).
                nt_attacked = 0;
                nt = 0;

-               par = 0;
+               par[0] = 0;

        }
        else {
                // we were unsuccessful on a previous call. Try another READER nonce (first 3 parity bits remain the same)
        }
        else {
                // we were unsuccessful on a previous call. Try another READER nonce (first 3 parity bits remain the same)

-               // nt_attacked = prng_successor(nt_attacked, 1);

                mf_nr_ar3++;
                mf_nr_ar[3] = mf_nr_ar3;
                mf_nr_ar3++;
                mf_nr_ar[3] = mf_nr_ar3;

-               par = par_low;
+               par[0] = par_low;

        }
 
        LED_A_ON();
        }
 
        LED_A_ON();


@@ -2000,7 +2099,7 @@ void ReaderMifare(bool first_try)
                ReaderTransmit(mf_auth, sizeof(mf_auth), &sync_time);
 
                // Receive the (4 Byte) "random" nonce
                ReaderTransmit(mf_auth, sizeof(mf_auth), &sync_time);
 
                // Receive the (4 Byte) "random" nonce

-               if (!ReaderReceive(receivedAnswer)) {
+               if (!ReaderReceive(receivedAnswer, receivedAnswerPar)) {

                        if (MF_DBGLEVEL >= 1)   Dbprintf("Mifare: Couldn't receive tag nonce");
                        continue;
                  }
                        if (MF_DBGLEVEL >= 1)   Dbprintf("Mifare: Couldn't receive tag nonce");
                        continue;
                  }


@@ -2052,19 +2151,19 @@ void ReaderMifare(bool first_try)
                consecutive_resyncs = 0;
                
                // Receive answer. This will be a 4 Bit NACK when the 8 parity bits are OK after decoding
                consecutive_resyncs = 0;
                
                // Receive answer. This will be a 4 Bit NACK when the 8 parity bits are OK after decoding

-               if (ReaderReceive(receivedAnswer))
+               if (ReaderReceive(receivedAnswer, receivedAnswerPar))

                {
                        catch_up_cycles = 8;    // the PRNG is delayed by 8 cycles due to the NAC (4Bits = 0x05 encrypted) transfer
        
                        if (nt_diff == 0)
                        {
                {
                        catch_up_cycles = 8;    // the PRNG is delayed by 8 cycles due to the NAC (4Bits = 0x05 encrypted) transfer
        
                        if (nt_diff == 0)
                        {

-                               par_low = par & 0x07; // there is no need to check all parities for other nt_diff. Parity Bits for mf_nr_ar[0..2] won't change
+                               par_low = par[0] & 0xE0; // there is no need to check all parities for other nt_diff. Parity Bits for mf_nr_ar[0..2] won't change

                        }
 
                        led_on = !led_on;
                        if(led_on) LED_B_ON(); else LED_B_OFF();
 
                        }
 
                        led_on = !led_on;
                        if(led_on) LED_B_ON(); else LED_B_OFF();
 

-                       par_list[nt_diff] = par;
+                       par_list[nt_diff] =  SwapBits(par[0], 8);

                        ks_list[nt_diff] = receivedAnswer[0] ^ 0x05;
 
                        // Test if the information is complete
                        ks_list[nt_diff] = receivedAnswer[0] ^ 0x05;
 
                        // Test if the information is complete


@@ -2075,13 +2174,13 @@ void ReaderMifare(bool first_try)
 
                        nt_diff = (nt_diff + 1) & 0x07;
                        mf_nr_ar[3] = (mf_nr_ar[3] & 0x1F) | (nt_diff << 5);
 
                        nt_diff = (nt_diff + 1) & 0x07;
                        mf_nr_ar[3] = (mf_nr_ar[3] & 0x1F) | (nt_diff << 5);

-                       par = par_low;
+                       par[0] = par_low;

                } else {
                        if (nt_diff == 0 && first_try)
                        {
                } else {
                        if (nt_diff == 0 && first_try)
                        {

-                               par++;
+                               par[0]++;

                        } else {
                        } else {

-                               par = (((par >> 3) + 1) << 3) | par_low;
+                               par[0] = ((par[0] & 0x1F) + 1) | par_low;

                        }
                }
        }
                        }
                }
        }


@@ -2123,8 +2222,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
        int res;
        uint32_t selTimer = 0;
        uint32_t authTimer = 0;
        int res;
        uint32_t selTimer = 0;
        uint32_t authTimer = 0;

-       uint32_t par = 0;
-       int len = 0;
+       uint16_t len = 0;

        uint8_t cardWRBL = 0;
        uint8_t cardAUTHSC = 0;
        uint8_t cardAUTHKEY = 0xff;  // no authentication
        uint8_t cardWRBL = 0;
        uint8_t cardAUTHSC = 0;
        uint8_t cardAUTHKEY = 0xff;  // no authentication


@@ -2138,8 +2236,10 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
        struct Crypto1State *pcs;
        pcs = &mpcs;
        uint32_t numReads = 0;//Counts numer of times reader read a block
        struct Crypto1State *pcs;
        pcs = &mpcs;
        uint32_t numReads = 0;//Counts numer of times reader read a block

-       uint8_t* receivedCmd = eml_get_bigbufptr_recbuf();
-       uint8_t *response = eml_get_bigbufptr_sendbuf();
+       uint8_t* receivedCmd = get_bigbufptr_recvcmdbuf();
+       uint8_t* receivedCmd_par = receivedCmd + MAX_FRAME_SIZE;
+       uint8_t* response = get_bigbufptr_recvrespbuf();
+       uint8_t* response_par = response + MAX_FRAME_SIZE;

        
        uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID
        uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};
        
        uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID
        uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};


@@ -2206,9 +2306,12 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
 
        if (MF_DBGLEVEL >= 1)   {
                if (!_7BUID) {
 
        if (MF_DBGLEVEL >= 1)   {
                if (!_7BUID) {

-                       Dbprintf("4B UID: %02x%02x%02x%02x",rUIDBCC1[0] , rUIDBCC1[1] , rUIDBCC1[2] , rUIDBCC1[3]);
+                       Dbprintf("4B UID: %02x%02x%02x%02x", 
+                               rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3]);

                } else {
                } else {

-                       Dbprintf("7B UID: (%02x)%02x%02x%02x%02x%02x%02x%02x",rUIDBCC1[0] , rUIDBCC1[1] , rUIDBCC1[2] , rUIDBCC1[3],rUIDBCC2[0],rUIDBCC2[1] ,rUIDBCC2[2] , rUIDBCC2[3]);
+                       Dbprintf("7B UID: (%02x)%02x%02x%02x%02x%02x%02x%02x",
+                               rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3],
+                               rUIDBCC2[0], rUIDBCC2[1] ,rUIDBCC2[2], rUIDBCC2[3]);

                }
        }
 
                }
        }
 


@@ -2230,7 +2333,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
 
                //Now, get data
 
 
                //Now, get data
 

-               res = EmGetCmd(receivedCmd, &len);
+               res = EmGetCmd(receivedCmd, &len, receivedCmd_par);

                if (res == 2) { //Field is off!
                        cardSTATE = MFEMUL_NOFIELD;
                        LEDsoff();
                if (res == 2) { //Field is off!
                        cardSTATE = MFEMUL_NOFIELD;
                        LEDsoff();


@@ -2257,8 +2360,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                        case MFEMUL_NOFIELD:
                        case MFEMUL_HALTED:
                        case MFEMUL_IDLE:{
                        case MFEMUL_NOFIELD:
                        case MFEMUL_HALTED:
                        case MFEMUL_IDLE:{

-                               LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                               LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                               LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                break;
                        }
                        case MFEMUL_SELECT1:{
                                break;
                        }
                        case MFEMUL_SELECT1:{


@@ -2293,12 +2395,11 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                if( len != 8)
                                {
                                        cardSTATE_TO_IDLE();
                                if( len != 8)
                                {
                                        cardSTATE_TO_IDLE();

-                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                       LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        break;
                                }
                                uint32_t ar = bytes_to_num(receivedCmd, 4);
                                        break;
                                }
                                uint32_t ar = bytes_to_num(receivedCmd, 4);

-                               uint32_t nr= bytes_to_num(&receivedCmd[4], 4);
+                               uint32_t nr = bytes_to_num(&receivedCmd[4], 4);

 
                                //Collect AR/NR
                                if(ar_nr_collected < 2){
 
                                //Collect AR/NR
                                if(ar_nr_collected < 2){


@@ -2318,14 +2419,15 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
 
                                // test if auth OK
                                if (cardRr != prng_successor(nonce, 64)){
 
                                // test if auth OK
                                if (cardRr != prng_successor(nonce, 64)){

-                                       if (MF_DBGLEVEL >= 2)   Dbprintf("AUTH FAILED. cardRr=%08x, succ=%08x",cardRr, prng_successor(nonce, 64));
+                                       if (MF_DBGLEVEL >= 2) Dbprintf("AUTH FAILED for sector %d with key %c. cardRr=%08x, succ=%08x",
+                                                       cardAUTHSC, cardAUTHKEY == 0 ? 'A' : 'B',
+                                                       cardRr, prng_successor(nonce, 64));

                                        // Shouldn't we respond anything here?
                                        // Right now, we don't nack or anything, which causes the
                                        // reader to do a WUPA after a while. /Martin
                                        // -- which is the correct response. /piwi
                                        cardSTATE_TO_IDLE();
                                        // Shouldn't we respond anything here?
                                        // Right now, we don't nack or anything, which causes the
                                        // reader to do a WUPA after a while. /Martin
                                        // -- which is the correct response. /piwi
                                        cardSTATE_TO_IDLE();

-                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                       LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        break;
                                }
 
                                        break;
                                }
 


@@ -2343,8 +2445,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                        }
                        case MFEMUL_SELECT2:{
                                if (!len) { 
                        }
                        case MFEMUL_SELECT2:{
                                if (!len) { 

-                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                       LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        break;
                                }
                                if (len == 2 && (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x20)) {
                                        break;
                                }
                                if (len == 2 && (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x20)) {


@@ -2365,8 +2466,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                
                                // i guess there is a command). go into the work state.
                                if (len != 4) {
                                
                                // i guess there is a command). go into the work state.
                                if (len != 4) {

-                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                       LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        break;
                                }
                                cardSTATE = MFEMUL_WORK;
                                        break;
                                }
                                cardSTATE = MFEMUL_WORK;


@@ -2376,8 +2476,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
 
                        case MFEMUL_WORK:{
                                if (len == 0) {
 
                        case MFEMUL_WORK:{
                                if (len == 0) {

-                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                       LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        break;
                                }
                                
                                        break;
                                }
                                


@@ -2425,8 +2524,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                }
                                
                                if(len != 4) {
                                }
                                
                                if(len != 4) {

-                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                       LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        break;
                                }
 
                                        break;
                                }
 


@@ -2455,8 +2553,8 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                        }
                                        emlGetMem(response, receivedCmd[1], 1);
                                        AppendCrc14443a(response, 16);
                                        }
                                        emlGetMem(response, receivedCmd[1], 1);
                                        AppendCrc14443a(response, 16);

-                                       mf_crypto1_encrypt(pcs, response, 18, &par);
-                                       EmSendCmdPar(response, 18, par);
+                                       mf_crypto1_encrypt(pcs, response, 18, response_par);
+                                       EmSendCmdPar(response, 18, response_par);

                                        numReads++;
                                        if(exitAfterNReads > 0 && numReads == exitAfterNReads) {
                                                Dbprintf("%d reads done, exiting", numReads);
                                        numReads++;
                                        if(exitAfterNReads > 0 && numReads == exitAfterNReads) {
                                                Dbprintf("%d reads done, exiting", numReads);


@@ -2505,8 +2603,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                        LED_C_OFF();
                                        cardSTATE = MFEMUL_HALTED;
                                        if (MF_DBGLEVEL >= 4)   Dbprintf("--> HALTED. Selected time: %d ms",  GetTickCount() - selTimer);
                                        LED_C_OFF();
                                        cardSTATE = MFEMUL_HALTED;
                                        if (MF_DBGLEVEL >= 4)   Dbprintf("--> HALTED. Selected time: %d ms",  GetTickCount() - selTimer);

-                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                       LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                        break;
                                }
                                // RATS
                                        break;
                                }
                                // RATS


@@ -2527,8 +2624,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                        cardSTATE = MFEMUL_WORK;
                                } else {
                                        cardSTATE_TO_IDLE();
                                        cardSTATE = MFEMUL_WORK;
                                } else {
                                        cardSTATE_TO_IDLE();

-                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                                       LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                                       LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                }
                                break;
                        }
                                }
                                break;
                        }


@@ -2541,8 +2637,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                        cardSTATE_TO_IDLE();
                                        break;
                                } 
                                        cardSTATE_TO_IDLE();
                                        break;
                                } 

-                               LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                               LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                               LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                cardINTREG = cardINTREG + ans;
                                cardSTATE = MFEMUL_WORK;
                                break;
                                cardINTREG = cardINTREG + ans;
                                cardSTATE = MFEMUL_WORK;
                                break;


@@ -2555,8 +2650,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                        cardSTATE_TO_IDLE();
                                        break;
                                }
                                        cardSTATE_TO_IDLE();
                                        break;
                                }

-                               LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                               LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                               LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                cardINTREG = cardINTREG - ans;
                                cardSTATE = MFEMUL_WORK;
                                break;
                                cardINTREG = cardINTREG - ans;
                                cardSTATE = MFEMUL_WORK;
                                break;


@@ -2569,8 +2663,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *
                                        cardSTATE_TO_IDLE();
                                        break;
                                }
                                        cardSTATE_TO_IDLE();
                                        break;
                                }

-                               LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parityBits, TRUE);
-                               LogTrace(NULL, 0, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, 0, TRUE);
+                               LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

                                cardSTATE = MFEMUL_WORK;
                                break;
                        }
                                cardSTATE = MFEMUL_WORK;
                                break;
                        }


@@ -2634,9 +2727,11 @@ void RAMFUNC SniffMifare(uint8_t param) {
        // The length of a received command will in most cases be no more than 18 bytes.
        // So 32 should be enough!
        uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
        // The length of a received command will in most cases be no more than 18 bytes.
        // So 32 should be enough!
        uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);

+       uint8_t *receivedCmdPar = ((uint8_t *)BigBuf) + RECV_CMD_PAR_OFFSET;

        // The response (tag -> reader) that we're receiving.
        // The response (tag -> reader) that we're receiving.

-       uint8_t *receivedResponse = (((uint8_t *)BigBuf) + RECV_RES_OFFSET);
-
+       uint8_t *receivedResponse = (((uint8_t *)BigBuf) + RECV_RESP_OFFSET);
+       uint8_t *receivedResponsePar = ((uint8_t *)BigBuf) + RECV_RESP_PAR_OFFSET;
+       

        // As we receive stuff, we copy it from receivedCmd or receivedResponse
        // into trace, along with its length and other annotations.
        //uint8_t *trace = (uint8_t *)BigBuf;
        // As we receive stuff, we copy it from receivedCmd or receivedResponse
        // into trace, along with its length and other annotations.
        //uint8_t *trace = (uint8_t *)BigBuf;


@@ -2653,10 +2748,10 @@ void RAMFUNC SniffMifare(uint8_t param) {
        iso14443a_setup(FPGA_HF_ISO14443A_SNIFFER);
 
        // Set up the demodulator for tag -> reader responses.
        iso14443a_setup(FPGA_HF_ISO14443A_SNIFFER);
 
        // Set up the demodulator for tag -> reader responses.

-       Demod.output = receivedResponse;
+       DemodInit(receivedResponse, receivedResponsePar);

 
        // Set up the demodulator for the reader -> tag commands
 
        // Set up the demodulator for the reader -> tag commands

-       Uart.output = receivedCmd;
+       UartInit(receivedCmd, receivedCmdPar);

 
        // Setup for the DMA.
        FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); // set transfer address and number of bytes. Start transfer.
 
        // Setup for the DMA.
        FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); // set transfer address and number of bytes. Start transfer.


@@ -2728,7 +2823,7 @@ void RAMFUNC SniffMifare(uint8_t param) {
                                uint8_t readerdata = (previous_data & 0xF0) | (*data >> 4);
                                if(MillerDecoding(readerdata, (sniffCounter-1)*4)) {
                                        LED_C_INV();
                                uint8_t readerdata = (previous_data & 0xF0) | (*data >> 4);
                                if(MillerDecoding(readerdata, (sniffCounter-1)*4)) {
                                        LED_C_INV();

-                                       if (MfSniffLogic(receivedCmd, Uart.len, Uart.parityBits, Uart.bitCount, TRUE)) break;
+                                       if (MfSniffLogic(receivedCmd, Uart.len, Uart.parity, Uart.bitCount, TRUE)) break;

 
                                        /* And ready to receive another command. */
                                        UartReset();
 
                                        /* And ready to receive another command. */
                                        UartReset();


@@ -2744,7 +2839,7 @@ void RAMFUNC SniffMifare(uint8_t param) {
                                if(ManchesterDecoding(tagdata, 0, (sniffCounter-1)*4)) {
                                        LED_C_INV();
 
                                if(ManchesterDecoding(tagdata, 0, (sniffCounter-1)*4)) {
                                        LED_C_INV();
 

-                                       if (MfSniffLogic(receivedResponse, Demod.len, Demod.parityBits, Demod.bitCount, FALSE)) break;
+                                       if (MfSniffLogic(receivedResponse, Demod.len, Demod.parity, Demod.bitCount, FALSE)) break;

 
                                        // And ready to receive another response.
                                        DemodReset();
 
                                        // And ready to receive another response.
                                        DemodReset();