another "magic card" backdoor - command "read block". Added several commands to manip...

[proxmark3-svn] / armsrc / iclass.c

diff --git a/armsrc/iclass.c b/armsrc/iclass.c
index 37006e5126dd8f288f5ed1c95e757d8810fc5793..ced29424f28498f7c4b44ac1b8daa2be11282999 100644 (file)
--- a/armsrc/iclass.c
+++ b/armsrc/iclass.c
@@ -60,22 +60,6 @@ static int timeout = 4096;
 #define        SEC_Y 0x00
 #define        SEC_Z 0xc0
 
 #define        SEC_Y 0x00
 #define        SEC_Z 0xc0
 

-// SAME AS IN iso14443a.
-#define RECV_CMD_OFFSET   3032
-#define RECV_RES_OFFSET   3096
-#define DMA_BUFFER_OFFSET 3160
-#define DMA_BUFFER_SIZE   4096
-#define TRACE_LENGTH      3000
-
-uint32_t SwapBits(uint32_t value, int nrbits) {
-       int i;
-       uint32_t newvalue = 0;
-       for(i = 0; i < nrbits; i++) {
-               newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i);
-       }
-       return newvalue;
-}
-

 static int SendIClassAnswer(uint8_t *resp, int respLen, int delay);
 
 //-----------------------------------------------------------------------------
 static int SendIClassAnswer(uint8_t *resp, int respLen, int delay);
 
 //-----------------------------------------------------------------------------


@@ -687,7 +671,7 @@ void RAMFUNC SnoopIClass(void)
 // #define RECV_RES_OFFSET   3096
 // #define DMA_BUFFER_OFFSET 3160
 // #define DMA_BUFFER_SIZE   4096
 // #define RECV_RES_OFFSET   3096
 // #define DMA_BUFFER_OFFSET 3160
 // #define DMA_BUFFER_SIZE   4096

-// #define TRACE_LENGTH      3000
+// #define TRACE_SIZE        3000

 
     // We won't start recording the frames that we acquire until we trigger;
     // a good trigger condition to get started is probably when we see a
 
     // We won't start recording the frames that we acquire until we trigger;
     // a good trigger condition to get started is probably when we see a


@@ -816,7 +800,7 @@ void RAMFUNC SnoopIClass(void)
                        trace[traceLen++] = Uart.byteCnt;
                        memcpy(trace+traceLen, receivedCmd, Uart.byteCnt);
                        traceLen += Uart.byteCnt;
                        trace[traceLen++] = Uart.byteCnt;
                        memcpy(trace+traceLen, receivedCmd, Uart.byteCnt);
                        traceLen += Uart.byteCnt;

-                       if(traceLen > TRACE_LENGTH) break;
+                       if(traceLen > TRACE_SIZE) break;

                    //}
                    /* And ready to receive another command. */
                    Uart.state = STATE_UNSYNCD;
                    //}
                    /* And ready to receive another command. */
                    Uart.state = STATE_UNSYNCD;


@@ -848,7 +832,7 @@ void RAMFUNC SnoopIClass(void)
                    trace[traceLen++] = Demod.len;
                    memcpy(trace+traceLen, receivedResponse, Demod.len);
                    traceLen += Demod.len;
                    trace[traceLen++] = Demod.len;
                    memcpy(trace+traceLen, receivedResponse, Demod.len);
                    traceLen += Demod.len;

-                   if(traceLen > TRACE_LENGTH) break;
+                   if(traceLen > TRACE_SIZE) break;

 
                    //triggered = TRUE;
 
 
                    //triggered = TRUE;
 


@@ -885,20 +869,10 @@ done:
     LED_D_OFF();
 }
 
     LED_D_OFF();
 }
 

-
-void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN, int direction) {
-       int i;
-       int j = 0;
-       
-       if(direction == 0) {
-               for(i = 0; i < 8; i++) {
-                       rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5);
-               }
-       } else {
-               for(i = 0; i < 8; i++) {
-                       if(i == 0) { j = 7; } else { j = i - 1; }
-                       originalCSN[i] = (rotatedCSN[i] << 3) | (rotatedCSN[j] >> 5);
-               }
+void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN) {
+       int i; 
+       for(i = 0; i < 8; i++) {
+               rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5);

        }
 }
 
        }
 }
 


@@ -909,7 +883,7 @@ void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN, int direction) {
 //-----------------------------------------------------------------------------
 static int GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen)
 {
 //-----------------------------------------------------------------------------
 static int GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen)
 {

-    // Set FPGA mode to "simulated ISO 14443A tag", no modulation (listen
+    // Set FPGA mode to "simulated ISO 14443 tag", no modulation (listen

     // only, since we are receiving, not transmitting).
     // Signal field is off with the appropriate LED
     LED_D_OFF();
     // only, since we are receiving, not transmitting).
     // Signal field is off with the appropriate LED
     LED_D_OFF();


@@ -1019,38 +993,19 @@ static void CodeIClassTagSOF()
 //-----------------------------------------------------------------------------
 void SimulateIClass(uint8_t arg0, uint8_t *datain)
 {
 //-----------------------------------------------------------------------------
 void SimulateIClass(uint8_t arg0, uint8_t *datain)
 {

-       // DEFINED ABOVE
-       // #define RECV_CMD_OFFSET   3032
-       // #define RECV_RES_OFFSET   3096
-       // #define DMA_BUFFER_OFFSET 3160
-       // #define DMA_BUFFER_SIZE   4096
-       // #define TRACE_LENGTH      3000

        uint8_t simType = arg0;
        uint8_t simType = arg0;

-       int SMALL_BUFFER_OFFSET = 2000;
-       bool fullbuffer = FALSE;
-       uint32_t parityBits = 0;
-       
-       iso14a_set_tracing(TRUE);
-       iso14a_clear_tracelen();
-       iso14a_set_trigger(FALSE);

 
 

-       // PREPARE PROTOCOL MESSAGES FIRST
-       
-       // Pointers to tag answers that should be stored in the buffer
-       uint8_t *response;
-       int responselength;
+  // Enable and clear the trace
+       tracing = TRUE;
+       traceLen = 0;
+  memset(trace, 0x44, TRACE_SIZE);

 
        // CSN followed by two CRC bytes
 
        // CSN followed by two CRC bytes

-       uint8_t response1[] = { 0x0f }; // Tag SOF

        uint8_t response2[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
        uint8_t response2[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

-       uint8_t response3[] = { 0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0, 0x00, 0x00 };
-       int response1length = 1;
-       int response2length = 10;
-       int response3length = 10;
+       uint8_t response3[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };

 
        // e-Purse
        uint8_t response4[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 
        // e-Purse
        uint8_t response4[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

-       int response4length = 8;

 
        if(simType == 0) {
                // Use the CSN from commandline
 
        if(simType == 0) {
                // Use the CSN from commandline


@@ -1058,7 +1013,7 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
        }
 
        // Construct anticollision-CSN
        }
 
        // Construct anticollision-CSN

-       rotateCSN(response3,response2,0);
+       rotateCSN(response3,response2);

 
        // Compute CRC on both CSNs
        ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]);
 
        // Compute CRC on both CSNs
        ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]);


@@ -1071,37 +1026,36 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
        // Reader 81 anticoll. CSN
        // Tag    CSN
 
        // Reader 81 anticoll. CSN
        // Tag    CSN
 

-        uint8_t *resp;
-        int respLen;
+       uint8_t *resp;
+       int respLen;
+       uint8_t* respdata = NULL;
+       int respsize = 0;
+       uint8_t sof = 0x0f;

 
        // Respond SOF -- takes 8 bytes
 
        // Respond SOF -- takes 8 bytes

-       uint8_t *resp1 = (((uint8_t *)BigBuf));
+       uint8_t *resp1 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);

        int resp1Len;
 
        // Anticollision CSN (rotated CSN)
        // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)
        int resp1Len;
 
        // Anticollision CSN (rotated CSN)
        // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)

-       uint8_t *resp2 = (((uint8_t *)BigBuf) + 10 + SMALL_BUFFER_OFFSET);
+       uint8_t *resp2 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 10);

        int resp2Len;
 
        // CSN
        // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)
        int resp2Len;
 
        // CSN
        // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)

-       uint8_t *resp3 = (((uint8_t *)BigBuf) + 190 + SMALL_BUFFER_OFFSET);
-       //int resp3Len; // NOT USED
+       uint8_t *resp3 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 190);
+       int resp3Len;

 
        // e-Purse
        // 144: Takes 16 bytes for SOF/EOF and 8 * 16 = 128 bytes (2 bytes/bit)
 
        // e-Purse
        // 144: Takes 16 bytes for SOF/EOF and 8 * 16 = 128 bytes (2 bytes/bit)

-       uint8_t *resp4 = (((uint8_t *)BigBuf) + 270 + SMALL_BUFFER_OFFSET);
+       uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 370);

        int resp4Len;
 
        // + 1720..
        int resp4Len;
 
        // + 1720..

-       //uint8_t *receivedCmd = (uint8_t *)BigBuf;
-        uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
-       memset(receivedCmd, 0x44, 64);
+  uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
+       memset(receivedCmd, 0x44, RECV_CMD_SIZE);

        int len;
 
        int len;
 

-       // Reset trace buffer
-        memset(trace, 0x44, RECV_CMD_OFFSET);
-

        // Prepare card messages
        ToSendMax = 0;
 
        // Prepare card messages
        ToSendMax = 0;
 


@@ -1115,7 +1069,7 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
 
        // CSN
        CodeIClassTagAnswer(response3, sizeof(response3));
 
        // CSN
        CodeIClassTagAnswer(response3, sizeof(response3));

-       memcpy(resp3, ToSend, ToSendMax); //resp3Len = ToSendMax; // NOT USED
+       memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax;

 
        // e-Purse
        CodeIClassTagAnswer(response4, sizeof(response4));
 
        // e-Purse
        CodeIClassTagAnswer(response4, sizeof(response4));


@@ -1126,50 +1080,52 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
        FpgaSetupSsc();
 
        // To control where we are in the protocol
        FpgaSetupSsc();
 
        // To control where we are in the protocol

-       //int order = 0;
-       // int lastorder; // NOT USED

        int cmdsRecvd = 0;
        int cmdsRecvd = 0;

-       resp = resp1; respLen = 0;
-       response = response1; responselength = response1length;
+

        LED_A_ON();
        for(;;) {
                LED_B_OFF();
                if(!GetIClassCommandFromReader(receivedCmd, &len, 100)) {
        LED_A_ON();
        for(;;) {
                LED_B_OFF();
                if(!GetIClassCommandFromReader(receivedCmd, &len, 100)) {

-                       DbpString("button press");
+                       DbpString("button press");

                        break;
                        break;

-                       }
+               }

 
 

-               // Okay, look at the command now.
-               //lastorder = order; // NOT USED
-               if(receivedCmd[0] == 0x0a) {
+               // Okay, look at the command now.
+               if(receivedCmd[0] == 0x0a) {

                        // Reader in anticollission phase
                        resp = resp1; respLen = resp1Len; //order = 1;
                        // Reader in anticollission phase
                        resp = resp1; respLen = resp1Len; //order = 1;

-                       response = response1; responselength = response1length;
+                       respdata = &sof;
+                       respsize = sizeof(sof);

                        //resp = resp2; respLen = resp2Len; order = 2;
                        //DbpString("Hello request from reader:");
                } else if(receivedCmd[0] == 0x0c) {
                        // Reader asks for anticollission CSN
                        resp = resp2; respLen = resp2Len; //order = 2;
                        //resp = resp2; respLen = resp2Len; order = 2;
                        //DbpString("Hello request from reader:");
                } else if(receivedCmd[0] == 0x0c) {
                        // Reader asks for anticollission CSN
                        resp = resp2; respLen = resp2Len; //order = 2;

-                       response = response2; responselength = response2length;
+                       respdata = response2;
+                       respsize = sizeof(response2);

                        //DbpString("Reader requests anticollission CSN:");
                } else if(receivedCmd[0] == 0x81) {
                        // Reader selects anticollission CSN.
                        // Tag sends the corresponding real CSN
                        //DbpString("Reader requests anticollission CSN:");
                } else if(receivedCmd[0] == 0x81) {
                        // Reader selects anticollission CSN.
                        // Tag sends the corresponding real CSN

-                       resp = resp3; respLen = resp2Len; //order = 3;
-                       response = response3; responselength = response3length;
+                       resp = resp3; respLen = resp3Len; //order = 3;
+                       respdata = response3;
+                       respsize = sizeof(response3);

                        //DbpString("Reader selects anticollission CSN:");
                } else if(receivedCmd[0] == 0x88) {
                        // Read e-purse (88 02)
                        resp = resp4; respLen = resp4Len; //order = 4;
                        //DbpString("Reader selects anticollission CSN:");
                } else if(receivedCmd[0] == 0x88) {
                        // Read e-purse (88 02)
                        resp = resp4; respLen = resp4Len; //order = 4;

-                       response = response4; responselength = response4length;
+                       respdata = response4;
+                       respsize = sizeof(response4);

                        LED_B_ON();
                } else if(receivedCmd[0] == 0x05) {
                        // Reader random and reader MAC!!!
                        // Lets store this ;-)
                        LED_B_ON();
                } else if(receivedCmd[0] == 0x05) {
                        // Reader random and reader MAC!!!
                        // Lets store this ;-)

-                       Dbprintf("            CSN: %02x %02x %02x %02x %02x %02x %02x %02x",
+/*
+                       Dbprintf("                CSN: %02x %02x %02x %02x %02x %02x %02x %02x",

                        response3[0], response3[1], response3[2],
                        response3[3], response3[4], response3[5],
                        response3[6], response3[7]);
                        response3[0], response3[1], response3[2],
                        response3[3], response3[4], response3[5],
                        response3[6], response3[7]);

+*/                     

                        Dbprintf("READER AUTH (len=%02d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",
                        len,
                        receivedCmd[0], receivedCmd[1], receivedCmd[2],
                        Dbprintf("READER AUTH (len=%02d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",
                        len,
                        receivedCmd[0], receivedCmd[1], receivedCmd[2],


@@ -1179,10 +1135,14 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
                        // Do not respond
                        // We do not know what to answer, so lets keep quit
                        resp = resp1; respLen = 0; //order = 5;
                        // Do not respond
                        // We do not know what to answer, so lets keep quit
                        resp = resp1; respLen = 0; //order = 5;

+                       respdata = NULL;
+                       respsize = 0;

                } else if(receivedCmd[0] == 0x00 && len == 1) {
                        // Reader ends the session
                        resp = resp1; respLen = 0; //order = 0;
                } else if(receivedCmd[0] == 0x00 && len == 1) {
                        // Reader ends the session
                        resp = resp1; respLen = 0; //order = 0;

-               } else {
+                       respdata = NULL;
+                       respsize = 0;
+               } else {

                        // Never seen this command before
                        Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
                        len,
                        // Never seen this command before
                        Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
                        len,


@@ -1191,7 +1151,8 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
                        receivedCmd[6], receivedCmd[7], receivedCmd[8]);
                        // Do not respond
                        resp = resp1; respLen = 0; //order = 0;
                        receivedCmd[6], receivedCmd[7], receivedCmd[8]);
                        // Do not respond
                        resp = resp1; respLen = 0; //order = 0;

-                       response = response1; responselength = response1length;
+                       respdata = NULL;
+                       respsize = 0;

                }
 
                if(cmdsRecvd > 999) {
                }
 
                if(cmdsRecvd > 999) {


@@ -1202,27 +1163,25 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
                        cmdsRecvd++;
                }
 
                        cmdsRecvd++;
                }
 

-               if(respLen <= 0) continue;
-
-               SendIClassAnswer(resp, respLen, 21);
-
-               // Store commands and responses in buffer
-               // as long as there is room for it.
-               if(traceLen < (SMALL_BUFFER_OFFSET - 32)) {
-                       if(tracing) {
-                               LogTrace(receivedCmd,len,0,GetParity(receivedCmd,len),TRUE);
-                               parityBits = SwapBits(GetParity(response,responselength),responselength);
-                               LogTrace(response,responselength,0,parityBits,FALSE);
+               if(respLen > 0) {
+                       SendIClassAnswer(resp, respLen, 21);
+               }
+               
+               if (tracing) {
+                       LogTrace(receivedCmd,len, 0, Uart.parityBits, TRUE);
+                       if (respdata != NULL) {
+                               LogTrace(respdata,respsize, 0, SwapBits(GetParity(respdata,respsize),respsize), FALSE);
+                       }
+                       if(traceLen > TRACE_SIZE) {
+                               DbpString("Trace full");
+                               break;

                        }
                        }

-               } else if(!fullbuffer) {
-                       DbpString("Trace buffer is full now...");
-                       fullbuffer = TRUE;

                }
 
                }
 

-               memset(receivedCmd, 0x44, 32);
-    }
+               memset(receivedCmd, 0x44, RECV_CMD_SIZE);
+       }

 
 

-       //Dbprintf("Commands received: %d", cmdsRecvd);
+       Dbprintf("%x", cmdsRecvd);

        LED_A_OFF();
        LED_B_OFF();
 }
        LED_A_OFF();
        LED_B_OFF();
 }


@@ -1231,6 +1190,9 @@ static int SendIClassAnswer(uint8_t *resp, int respLen, int delay)
 {
        int i = 0, u = 0, d = 0;
        uint8_t b = 0;
 {
        int i = 0, u = 0, d = 0;
        uint8_t b = 0;

+       // return 0;
+       // Modulate Manchester
+       // FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD424);

        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD);
        AT91C_BASE_SSC->SSC_THR = 0x00;
        FpgaSetupSsc();
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD);
        AT91C_BASE_SSC->SSC_THR = 0x00;
        FpgaSetupSsc();


@@ -1452,14 +1414,9 @@ int ReaderReceiveIClass(uint8_t* receivedAnswer)
 
 // Reader iClass Anticollission
 void ReaderIClass(uint8_t arg0) {
 
 // Reader iClass Anticollission
 void ReaderIClass(uint8_t arg0) {

-       int i = 0;
-       int length = 0;
-       bool csn_failure = FALSE;
-

        uint8_t act_all[]     = { 0x0a };
        uint8_t identify[]    = { 0x0c };
        uint8_t select[]      = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
        uint8_t act_all[]     = { 0x0a };
        uint8_t identify[]    = { 0x0c };
        uint8_t select[]      = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

-       uint8_t check_csn[]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

 
        uint8_t* resp = (((uint8_t *)BigBuf) + 3560);   // was 3560 - tied to other size changes
 
 
        uint8_t* resp = (((uint8_t *)BigBuf) + 3560);   // was 3560 - tied to other size changes
 


@@ -1485,47 +1442,37 @@ void ReaderIClass(uint8_t arg0) {
        LED_A_ON();
 
        for(;;) {
        LED_A_ON();
 
        for(;;) {

-               if(traceLen > TRACE_LENGTH || BUTTON_PRESS()) break;
+       
+               if(traceLen > TRACE_SIZE) {
+                       DbpString("Trace full");
+                       break;
+               }
+               
+               if (BUTTON_PRESS()) break;

 
                // Send act_all
                ReaderTransmitIClass(act_all, 1);
                // Card present?
                if(ReaderReceiveIClass(resp)) {
                        ReaderTransmitIClass(identify, 1);
 
                // Send act_all
                ReaderTransmitIClass(act_all, 1);
                // Card present?
                if(ReaderReceiveIClass(resp)) {
                        ReaderTransmitIClass(identify, 1);

-                       if((length = ReaderReceiveIClass(resp))) {
-                               if(length == 10) {
-                                       // Select card          
-                                       memcpy(&select[1],resp,8);
-                                       ReaderTransmitIClass(select, sizeof(select));
-       
-                                       if((length = ReaderReceiveIClass(resp))) {
-                                               if(length == 10) {
-                                                       rotateCSN(check_csn,&select[1],1);
-                                                       csn_failure = FALSE;
-                                                       for(i = 0; i < 8; i++) {
-                                                               if(check_csn[i] != resp[i]) {
-                                                                       csn_failure = TRUE;
-                                                                       break;
-                                                               }
-                                                       }
-                                                       
-                                                       if(!csn_failure) {
-                       Dbprintf("     Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x",
-                       check_csn[0], check_csn[1], check_csn[2],
-                       check_csn[3], check_csn[4], check_csn[5],
-                       check_csn[6], check_csn[7]);
-                                                       }
-                                                       // Card selected, whats next... ;-)
-                                                       
-                                               }
-                                       }
+                       if(ReaderReceiveIClass(resp) == 10) {
+                               // Select card          
+                               memcpy(&select[1],resp,8);
+                               ReaderTransmitIClass(select, sizeof(select));
+
+                               if(ReaderReceiveIClass(resp) == 10) {
+                                       Dbprintf("     Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x",
+                                       resp[0], resp[1], resp[2],
+                                       resp[3], resp[4], resp[5],
+                                       resp[6], resp[7]);

                                }
                                }

+                               // Card selected, whats next... ;-)

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

-

 }
 
 }
 

+