Typo in hf 14a sim help

[proxmark3-svn] / armsrc / iso14443b.c

diff --git a/armsrc/iso14443b.c b/armsrc/iso14443b.c
index 832d661ac707de3f43b40e5fdcf5f2a46dcf4315..0c887a2539b00fafdcc8b9ecaa8c6d3e3b74f862 100644 (file)
--- a/armsrc/iso14443b.c
+++ b/armsrc/iso14443b.c
@@ -19,6 +19,11 @@
 #define TR1 0
 // Frame Delay Time PICC to PCD  (per 14443-3 Amendment 1)
 #define TR2 0
 #define TR1 0
 // Frame Delay Time PICC to PCD  (per 14443-3 Amendment 1)
 #define TR2 0

+
+// 4sample
+//#define SEND4STUFFBIT(x) ToSendStuffBit(x);ToSendStuffBit(x);ToSendStuffBit(x);ToSendStuffBit(x);
+#define SEND4STUFFBIT(x) ToSendStuffBit(x);
+

 static void switch_off(void);
 
 // the block number for the ISO14443-4 PCB  (used with APDUs)
 static void switch_off(void);
 
 // the block number for the ISO14443-4 PCB  (used with APDUs)


@@ -132,7 +137,7 @@ static void DemodInit(uint8_t *data) {
 }
 
 void AppendCrc14443b(uint8_t* data, int len) {
 }
 
 void AppendCrc14443b(uint8_t* data, int len) {

-       ComputeCrc14443(CRC_14443_B,data,len,data+len,data+len+1);
+       ComputeCrc14443(CRC_14443_B, data, len, data+len, data+len+1);

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


@@ -218,80 +223,42 @@ static void CodeIso14443bAsTag(const uint8_t *cmd, int len) {
 
        // Send SOF.
        // 10-11 ETU * 4times samples ZEROS
 
        // Send SOF.
        // 10-11 ETU * 4times samples ZEROS

-       for(i = 0; i < 10; i++) {
-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
-       }
+       for(i = 0; i < 10; i++) { SEND4STUFFBIT(0); }

        
        // 2-3 ETU * 4times samples ONES
        
        // 2-3 ETU * 4times samples ONES

-       for(i = 0; i < 3; i++) {
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-       }
+       for(i = 0; i < 3; i++)  { SEND4STUFFBIT(1); }

        
        // data
        for(i = 0; i < len; ++i) {
                
                // Start bit
        
        // data
        for(i = 0; i < len; ++i) {
                
                // Start bit

-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
+               SEND4STUFFBIT(0);

 
                // Data bits
                b = cmd[i];
                for(j = 0; j < 8; ++j) {
 
                // Data bits
                b = cmd[i];
                for(j = 0; j < 8; ++j) {

-                       if(b & 1) {
-                               ToSendStuffBit(1);
-                               ToSendStuffBit(1);
-                               ToSendStuffBit(1);
-                               ToSendStuffBit(1);
+                       if(b & 1) { 
+                               SEND4STUFFBIT(1); 

                        } else {
                        } else {

-                               ToSendStuffBit(0);
-                               ToSendStuffBit(0);
-                               ToSendStuffBit(0);
-                               ToSendStuffBit(0);
+                               SEND4STUFFBIT(0);

                        }
                        b >>= 1;
                }
 
                // Stop bit
                        }
                        b >>= 1;
                }
 
                // Stop bit

-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
+               SEND4STUFFBIT(1);

                
                // Extra Guard bit
                // For PICC it ranges 0-18us (1etu = 9us)
                
                // Extra Guard bit
                // For PICC it ranges 0-18us (1etu = 9us)

-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
+               SEND4STUFFBIT(1);

        }
 
        // Send EOF.
        // 10-11 ETU * 4 sample rate = ZEROS
        }
 
        // Send EOF.
        // 10-11 ETU * 4 sample rate = ZEROS

-       for(i = 0; i < 10; i++) {
-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
-               ToSendStuffBit(0);
-       }
+       for(i = 0; i < 10; i++) { SEND4STUFFBIT(0); }

        
        // why this?
        
        // why this?

-       for(i = 0; i < 40; i++) {
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-               ToSendStuffBit(1);
-       }
+       for(i = 0; i < 40; i++) { SEND4STUFFBIT(1); }

        
        // Convert from last byte pos to length
        ++ToSendMax;
        
        // Convert from last byte pos to length
        ++ToSendMax;


@@ -314,8 +281,7 @@ static RAMFUNC int Handle14443bReaderUartBit(uint8_t bit) {
        switch(Uart.state) {
                case STATE_UNSYNCD:
                        if(!bit) {
        switch(Uart.state) {
                case STATE_UNSYNCD:
                        if(!bit) {

-                               // we went low, so this could be the beginning
-                               // of an SOF
+                               // we went low, so this could be the beginning of an SOF

                                Uart.state = STATE_GOT_FALLING_EDGE_OF_SOF;
                                Uart.posCnt = 0;
                                Uart.bitCnt = 0;
                                Uart.state = STATE_GOT_FALLING_EDGE_OF_SOF;
                                Uart.posCnt = 0;
                                Uart.bitCnt = 0;


@@ -438,21 +404,32 @@ static int GetIso14443bCommandFromReader(uint8_t *received, uint16_t *len) {
        // Signal field is off with the appropriate LED
        LED_D_OFF();
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_NO_MODULATION);
        // Signal field is off with the appropriate LED
        LED_D_OFF();
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_NO_MODULATION);

-       
+               

        StartCountSspClk();
        
        StartCountSspClk();
        

+       volatile uint8_t b;
+
+       // clear receiving shift register and holding register
+       // What does this loop do? Is it TR1?
+       for(uint8_t c = 0; c < 10;) {
+               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+                       AT91C_BASE_SSC->SSC_THR = 0xFF;
+                       ++c;
+               }
+       }
+       

        // Now run a `software UART' on the stream of incoming samples.
        UartInit(received);
        // Now run a `software UART' on the stream of incoming samples.
        UartInit(received);

-       uint8_t b = 0;
-       for(;;) {
-               WDT_HIT();

 
 

-               if(BUTTON_PRESS()) return FALSE;
+       b = 0;
+       uint8_t mask;
+       while( !BUTTON_PRESS() ) {
+               WDT_HIT();

 
 

-               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-                       b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
-                       for(uint8_t mask = 0x80; mask != 0x00; mask >>= 1) {
-                               if(Handle14443bReaderUartBit(b & mask)) {
+               if ( AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY ) {
+                       b = (uint8_t) AT91C_BASE_SSC->SSC_RHR;
+                       for ( mask = 0x80; mask != 0; mask >>= 1) {
+                               if ( Handle14443bReaderUartBit(b & mask)) {

                                        *len = Uart.byteCnt;
                                        return TRUE;
                                }
                                        *len = Uart.byteCnt;
                                        return TRUE;
                                }


@@ -462,30 +439,69 @@ static int GetIso14443bCommandFromReader(uint8_t *received, uint16_t *len) {
        return FALSE;
 }
 
        return FALSE;
 }
 

+void ClearFpgaShiftingRegisters(void){
+
+       volatile uint8_t b;
+
+       // clear receiving shift register and holding register
+       while(!(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY));
+       b = AT91C_BASE_SSC->SSC_RHR; (void) b;
+
+       while(!(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY));
+       b = AT91C_BASE_SSC->SSC_RHR; (void) b;
+       
+               
+       // wait for the FPGA to signal fdt_indicator == 1 (the FPGA is ready to queue new data in its delay line)
+       for (uint8_t j = 0; j < 5; j++) {       // allow timeout - better late than never
+               while(!(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY));
+               if (AT91C_BASE_SSC->SSC_RHR) break;
+       }
+       
+       // Clear TXRDY:
+       AT91C_BASE_SSC->SSC_THR = 0xFF;
+}
+
+void WaitForFpgaDelayQueueIsEmpty( uint16_t delay ){
+       // Ensure that the FPGA Delay Queue is empty before we switch to TAGSIM_LISTEN again:
+       uint8_t fpga_queued_bits = delay >> 3;  // twich /8 ??   >>3, 
+       for (uint8_t i = 0; i <= fpga_queued_bits/8 + 1; ) {
+               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+                       AT91C_BASE_SSC->SSC_THR = 0xFF;
+                       i++;
+               }
+       }
+}
+
+static void TransmitFor14443b_AsTag( uint8_t *response, uint16_t len) {
+
+               // Signal field is off with the appropriate LED
+               LED_D_OFF();
+               uint16_t fpgasendQueueDelay = 0;
+               
+               // Modulate BPSK
+               FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_MODULATE_BPSK);
+               
+               ClearFpgaShiftingRegisters();
+               
+               FpgaSetupSsc();
+
+               // Transmit the response.
+               for(uint16_t i = 0; i < len;) {
+                       if(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
+                               AT91C_BASE_SSC->SSC_THR = response[++i];
+                               fpgasendQueueDelay = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
+                       }
+               }
+               
+               WaitForFpgaDelayQueueIsEmpty(fpgasendQueueDelay);
+}      

 //-----------------------------------------------------------------------------
 // Main loop of simulated tag: receive commands from reader, decide what
 // response to send, and send it.
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // Main loop of simulated tag: receive commands from reader, decide what
 // response to send, and send it.
 //-----------------------------------------------------------------------------

-void SimulateIso14443bTag(void) {
-       // the only commands we understand is WUPB, AFI=0, Select All, N=1:
-       static const uint8_t cmd1[] = { ISO14443B_REQB, 0x00, 0x08, 0x39, 0x73 }; // WUPB
-       // ... and REQB, AFI=0, Normal Request, N=1:
-       static const uint8_t cmd2[] = { ISO14443B_REQB, 0x00, 0x00, 0x71, 0xFF }; // REQB
-       // ... and HLTB
-       static const uint8_t cmd3[] = { ISO14443B_HALT, 0xff, 0xff, 0xff, 0xff }; // HLTB
-       // ... and ATTRIB
-       static const uint8_t cmd4[] = { ISO14443B_ATTRIB, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; // ATTRIB
+void SimulateIso14443bTag(uint32_t pupi) {

 
 

-       // ... and we always respond with ATQB, PUPI = 820de174, Application Data = 0x20381922,
-       // supports only 106kBit/s in both directions, max frame size = 32Bytes,
-       // supports ISO14443-4, FWI=8 (77ms), NAD supported, CID not supported:
-       static const uint8_t response1[] = {
-               0x50, 0x82, 0x0d, 0xe1, 0x74, 0x20, 0x38, 0x19, 0x22,
-               0x00, 0x21, 0x85, 0x5e, 0xd7
-       };
-       // response to HLTB and ATTRIB
-       static const uint8_t response2[] = {0x00, 0x78, 0xF0};
-                               
+       ///////////// setup device.

        FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 
        // allocate command receive buffer
        FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 
        // allocate command receive buffer


@@ -493,123 +509,158 @@ void SimulateIso14443bTag(void) {
        BigBuf_Clear_ext(false);
        clear_trace(); //sim
        set_tracing(TRUE);
        BigBuf_Clear_ext(false);
        clear_trace(); //sim
        set_tracing(TRUE);

-
-       const uint8_t *resp;
-       uint8_t *respCode;
-       uint16_t respLen, respCodeLen, len, cmdsRecvd = 0;
-       uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);
-       
-       // prepare the (only one) tag answer:
-       CodeIso14443bAsTag(response1, sizeof(response1));
-       uint8_t *resp1Code = BigBuf_malloc(ToSendMax);
-       memcpy(resp1Code, ToSend, ToSendMax); 
-       uint16_t resp1CodeLen = ToSendMax;
-       DbpString("Printing Resp1Code:");
-       Dbhexdump(resp1CodeLen, resp1Code, 0);
-       
-       // prepare the (other) tag answer:
-       CodeIso14443bAsTag(response2, sizeof(response2));
-       uint8_t *resp2Code = BigBuf_malloc(ToSendMax);
-       memcpy(resp2Code, ToSend, ToSendMax); 
-       uint16_t resp2CodeLen = ToSendMax;
-       
-       // We need to listen to the high-frequency, peak-detected path.
+       
+       // connect Demodulated Signal to ADC:

        SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
        SetAdcMuxFor(GPIO_MUXSEL_HIPKD);

+
+       // Set up the synchronous serial port

        FpgaSetupSsc();
        FpgaSetupSsc();

+       /////////////

 
 

-       uint32_t time_0 =0;
-       uint32_t t2r_time =0;
-       uint32_t r2t_time =0;
-       cmdsRecvd = 0;
+       uint16_t len, cmdsReceived = 0;
+       int cardSTATE = SIM_NOFIELD;
+       int vHf = 0;    // in mV
+       // uint32_t time_0 = 0;
+       // uint32_t t2r_time = 0;
+       // uint32_t r2t_time = 0;
+       uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);   
+       
+       // the only commands we understand is WUPB, AFI=0, Select All, N=1:
+//     static const uint8_t cmdWUPB[] = { ISO14443B_REQB, 0x00, 0x08, 0x39, 0x73 }; // WUPB
+       // ... and REQB, AFI=0, Normal Request, N=1:
+//     static const uint8_t cmdREQB[] = { ISO14443B_REQB, 0x00, 0x00, 0x71, 0xFF }; // REQB
+       // ... and ATTRIB
+//     static const uint8_t cmdATTRIB[] = { ISO14443B_ATTRIB, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; // ATTRIB

 
 

-       for(;;) {
+       // ... if not PUPI/UID is supplied we always respond with ATQB, PUPI = 820de174, Application Data = 0x20381922,
+       // supports only 106kBit/s in both directions, max frame size = 32Bytes,
+       // supports ISO14443-4, FWI=8 (77ms), NAD supported, CID not supported:
+       uint8_t respATQB[] = {  0x50, 0x82, 0x0d, 0xe1, 0x74, 0x20, 0x38, 0x19, 
+                                                       0x22, 0x00, 0x21, 0x85, 0x5e, 0xd7 };
+                                                       
+       // response to HLTB and ATTRIB
+       static const uint8_t respOK[] = {0x00, 0x78, 0xF0};

 
 

-               if (!GetIso14443bCommandFromReader(receivedCmd, &len)) {
-                       Dbprintf("button pressed, received %d commands", cmdsRecvd);
-                       break;
-               }
-               r2t_time = GetCountSspClk();
+       // ...PUPI/UID supplied from user. Adjust ATQB response accordingly
+       if ( pupi > 0 ) {
+               num_to_bytes(pupi, 4, respATQB+1);
+               ComputeCrc14443(CRC_14443_B, respATQB, 12, respATQB+13, respATQB+14);
+       }

 
 

-               if (tracing) 
-                       LogTrace(receivedCmd, len, (r2t_time - time_0), (r2t_time - time_0), NULL, TRUE);       
-                       
+       // prepare "ATQB" tag answer (encoded):
+       CodeIso14443bAsTag(respATQB, sizeof(respATQB));
+       uint8_t *encodedATQB = BigBuf_malloc(ToSendMax);
+       uint16_t encodedATQBLen = ToSendMax;
+       memcpy(encodedATQB, ToSend, ToSendMax); 

 
 

-               // Good, look at the command now.
-               if ( (len == sizeof(cmd1) && memcmp(receivedCmd, cmd1, len) == 0)
-                       || (len == sizeof(cmd2) && memcmp(receivedCmd, cmd2, len) == 0) ) {
-                       resp = response1; 
-                       respLen = sizeof(response1);
-                       respCode = resp1Code; 
-                       respCodeLen = resp1CodeLen;
-               } else if ( (len == sizeof(cmd3) && receivedCmd[0] == cmd3[0])
-                       || (len == sizeof(cmd4) && receivedCmd[0] == cmd4[0]) ) {
-                       resp = response2; 
-                       respLen = sizeof(response2);
-                       respCode = resp2Code; 
-                       respCodeLen = resp2CodeLen;
-               } else {
-                       Dbprintf("new cmd from reader: len=%d, cmdsRecvd=%d", len, cmdsRecvd);
-
-                       // And print whether the CRC fails, just for good measure
-                       uint8_t b1, b2;
-                       if (len >= 3){ // if crc exists
-                               ComputeCrc14443(CRC_14443_B, receivedCmd, len-2, &b1, &b2);
-                               if(b1 != receivedCmd[len-2] || b2 != receivedCmd[len-1])
-                                       DbpString("+++CRC fail");
-                               else
-                                       DbpString("CRC passes");
-                       }
-                       //get rid of compiler warning
-                       respCodeLen = 0;
-                       resp = response1;
-                       respLen = 0;
-                       respCode = resp1Code;
-                       //don't crash at new command just wait and see if reader will send other new cmds.
-                       //break;
-               }
+       
+       // prepare "OK" tag answer (encoded):
+       CodeIso14443bAsTag(respOK, sizeof(respOK));
+       uint8_t *encodedOK = BigBuf_malloc(ToSendMax);
+       uint16_t encodedOKLen = ToSendMax;      
+       memcpy(encodedOK, ToSend, ToSendMax); 
+       
+       // Simulation loop
+       while (!BUTTON_PRESS() && !usb_poll_validate_length()) {
+               WDT_HIT();

 
 

-               ++cmdsRecvd;
+               // find reader field
+               if (cardSTATE == SIM_NOFIELD) {
+                       vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10;
+                       if ( vHf > MF_MINFIELDV ) {
+                               cardSTATE = SIM_IDLE; 
+                               LED_A_ON();
+                       }
+               } 
+               if (cardSTATE == SIM_NOFIELD) continue;

 
 

-               if(cmdsRecvd > 1000) {
-                       DbpString("1000 commands later...");
+               // Get reader command
+               if (!GetIso14443bCommandFromReader(receivedCmd, &len)) {
+                       Dbprintf("button pressed, received %d commands", cmdsReceived);

                        break;
                }
 
                        break;
                }
 

-               if(respCodeLen <= 0) continue;
-
-               // Modulate BPSK
-               // Signal field is off with the appropriate LED
-               LED_D_OFF();
-               FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_MODULATE_BPSK);
-
-               AT91C_BASE_SSC->SSC_THR = 0xff;
-
-               FpgaSetupSsc();
-
-               // Transmit the response.
-               uint16_t i = 0;
-               volatile uint8_t b;
-               for(;;) {
-                       if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
-
-                               AT91C_BASE_SSC->SSC_THR = respCode[i];
-                               i++;
-                               if(i > respCodeLen)
-                                       break;
-                       }
-                       
-                       if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-                               b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
-                               (void)b;
+               // ISO14443-B protocol states:
+               // REQ or WUP request in ANY state 
+               // WUP in HALTED state
+               if (len == 5 ) {
+                               if ( (receivedCmd[0] == ISO14443B_REQB && (receivedCmd[2] & 0x8)== 0x8 && cardSTATE == SIM_HALTED) ||
+                     receivedCmd[0] == ISO14443B_REQB ){
+                               LogTrace(receivedCmd, len, 0, 0, NULL, TRUE);                                             
+                               cardSTATE = SIM_SELECTING;

                        }
                }
                
                        }
                }
                

-               t2r_time = GetCountSspClk();
+               /*
+               * How should this flow go?
+               *  REQB or WUPB
+               *   send response  ( waiting for Attrib)
+               *  ATTRIB
+               *   send response  ( waiting for commands 7816) 
+               *  HALT
+                   send halt response ( waiting for wupb )
+               */

                
                

-               if (tracing)
-                       LogTrace(resp, respLen, (t2r_time-time_0), (t2r_time-time_0), NULL, FALSE);
+               switch(cardSTATE){
+                       case SIM_NOFIELD:
+                       case SIM_HALTED:
+                       case SIM_IDLE:{
+                               LogTrace(receivedCmd, len, 0, 0, NULL, TRUE);   
+                               break;
+                       }
+                       case SIM_SELECTING: {
+                               TransmitFor14443b_AsTag( encodedATQB, encodedATQBLen );
+                               LogTrace(respATQB, sizeof(respATQB), 0, 0, NULL, FALSE);
+                               cardSTATE = SIM_WORK;
+                               break;
+                       }
+                       case SIM_HALTING: {
+                               TransmitFor14443b_AsTag( encodedOK, encodedOKLen );
+                               LogTrace(respOK, sizeof(respOK), 0, 0, NULL, FALSE);
+                               cardSTATE = SIM_HALTED;
+                               break;
+                       }
+                       case SIM_ACKNOWLEDGE:{
+                               TransmitFor14443b_AsTag( encodedOK, encodedOKLen );
+                               LogTrace(respOK, sizeof(respOK), 0, 0, NULL, FALSE);
+                               cardSTATE = SIM_IDLE;                   
+                               break;
+                       }
+                       case SIM_WORK:{
+                               if ( len == 7 && receivedCmd[0] == ISO14443B_HALT ) {
+                                       cardSTATE = SIM_HALTED;
+                               } else if ( len == 11 && receivedCmd[0] == ISO14443B_ATTRIB ) {
+                                       cardSTATE = SIM_ACKNOWLEDGE;
+                               } else {
+                                       // Todo:
+                                       // - SLOT MARKER
+                                       // - ISO7816
+                                       // - emulate with a memory dump
+                                       Dbprintf("new cmd from reader: len=%d, cmdsRecvd=%d", len, cmdsReceived);
+
+                                       // CRC Check
+                                       uint8_t b1, b2;
+                                       if (len >= 3){ // if crc exists
+                                               ComputeCrc14443(CRC_14443_B, receivedCmd, len-2, &b1, &b2);
+                                               if(b1 != receivedCmd[len-2] || b2 != receivedCmd[len-1])
+                                                       DbpString("+++CRC fail");
+                                               else
+                                                       DbpString("CRC passes");
+                                       }
+                                       cardSTATE = SIM_IDLE; 
+                               }
+                               break;
+                       }
+                       default: break;
+               }
+                       
+               ++cmdsReceived;
+               if(cmdsReceived > 1000) {
+                       DbpString("14B Simulate, 1000 commands later...");
+                       break;
+               }

        }
        }

-       
+       if (MF_DBGLEVEL >= 1) Dbprintf("Emulator stopped. Tracing: %d  trace length: %d ", tracing, BigBuf_get_traceLen());

        switch_off(); //simulate
 }
 
        switch_off(); //simulate
 }
 


@@ -842,7 +893,7 @@ static RAMFUNC int Handle14443bTagSamplesDemod(int ci, int cq) {
  *  Demodulate the samples we received from the tag, also log to tracebuffer
  *  quiet: set to 'TRUE' to disable debug output
  */
  *  Demodulate the samples we received from the tag, also log to tracebuffer
  *  quiet: set to 'TRUE' to disable debug output
  */

-static void GetTagSamplesFor14443bDemod(bool quiet) {
+static void GetTagSamplesFor14443bDemod() {

        bool gotFrame = FALSE;
        int lastRxCounter = ISO14443B_DMA_BUFFER_SIZE;
        int max = 0, ci = 0, cq = 0, samples = 0;
        bool gotFrame = FALSE;
        int lastRxCounter = ISO14443B_DMA_BUFFER_SIZE;
        int max = 0, ci = 0, cq = 0, samples = 0;


@@ -907,7 +958,7 @@ static void GetTagSamplesFor14443bDemod(bool quiet) {
        
        FpgaDisableSscDma();
 
        
        FpgaDisableSscDma();
 

-       if (!quiet) {
+       if (MF_DBGLEVEL >= 3) {

                Dbprintf("max behindby = %d, samples = %d, gotFrame = %s, Demod.state = %d, Demod.len = %u",
                        max,
                        samples, 
                Dbprintf("max behindby = %d, samples = %d, gotFrame = %s, Demod.state = %d, Demod.len = %u",
                        max,
                        samples, 


@@ -918,10 +969,6 @@ static void GetTagSamplesFor14443bDemod(bool quiet) {
        }
        if ( Demod.len > 0 )
                LogTrace(Demod.output, Demod.len, Demod.startTime, Demod.endTime, NULL, FALSE);
        }
        if ( Demod.len > 0 )
                LogTrace(Demod.output, Demod.len, Demod.startTime, Demod.endTime, NULL, FALSE);

-       
-       // free mem refs.
-       // if ( dmaBuf ) dmaBuf = NULL;
-       // if ( upTo )   upTo = NULL;

 }
 
 
 }
 
 


@@ -1039,7 +1086,7 @@ static void CodeAndTransmit14443bAsReader(const uint8_t *cmd, int len) {
        
        if(trigger) LED_A_ON();
        
        
        if(trigger) LED_A_ON();
        

-       if (tracing) LogTrace(cmd, len, time_start, GetCountSspClk()-time_start, NULL, TRUE);
+       LogTrace(cmd, len, time_start, GetCountSspClk()-time_start, NULL, TRUE);

 }
 
 /* Sends an APDU to the tag
 }
 
 /* Sends an APDU to the tag


@@ -1061,7 +1108,7 @@ uint8_t iso14443b_apdu(uint8_t const *message, size_t message_length, uint8_t *r
        // send
        CodeAndTransmit14443bAsReader(message_frame, message_length + 4); //no
        // get response
        // send
        CodeAndTransmit14443bAsReader(message_frame, message_length + 4); //no
        // get response

-       GetTagSamplesFor14443bDemod(TRUE); //no
+       GetTagSamplesFor14443bDemod(); //no

        if(Demod.len < 3)
                return 0;
        
        if(Demod.len < 3)
                return 0;
        


@@ -1090,7 +1137,7 @@ uint8_t iso14443b_select_srx_card(iso14b_card_select_t *card )
        uint8_t crc[2] = {0x00, 0x00};
        
        CodeAndTransmit14443bAsReader(init_srx, sizeof(init_srx));
        uint8_t crc[2] = {0x00, 0x00};
        
        CodeAndTransmit14443bAsReader(init_srx, sizeof(init_srx));

-       GetTagSamplesFor14443bDemod(TRUE); //no
+       GetTagSamplesFor14443bDemod(); //no

 
        if (Demod.len == 0) return 2;
 
 
        if (Demod.len == 0) return 2;
 


@@ -1101,7 +1148,7 @@ uint8_t iso14443b_select_srx_card(iso14b_card_select_t *card )
        
        ComputeCrc14443(CRC_14443_B, select_srx, 2, &select_srx[2], &select_srx[3]);
        CodeAndTransmit14443bAsReader(select_srx, sizeof(select_srx));
        
        ComputeCrc14443(CRC_14443_B, select_srx, 2, &select_srx[2], &select_srx[3]);
        CodeAndTransmit14443bAsReader(select_srx, sizeof(select_srx));

-       GetTagSamplesFor14443bDemod(TRUE); //no
+       GetTagSamplesFor14443bDemod(); //no

        
        if (Demod.len != 3)     return 2;
        
        
        if (Demod.len != 3)     return 2;
        


@@ -1117,7 +1164,7 @@ uint8_t iso14443b_select_srx_card(iso14b_card_select_t *card )
 
        ComputeCrc14443(CRC_14443_B, select_srx, 1 , &select_srx[1], &select_srx[2]);
        CodeAndTransmit14443bAsReader(select_srx, 3); // Only first three bytes for this one
 
        ComputeCrc14443(CRC_14443_B, select_srx, 1 , &select_srx[1], &select_srx[2]);
        CodeAndTransmit14443bAsReader(select_srx, 3); // Only first three bytes for this one

-       GetTagSamplesFor14443bDemod(TRUE); //no
+       GetTagSamplesFor14443bDemod(); //no

 
        if (Demod.len != 10) return 2;
        
 
        if (Demod.len != 10) return 2;
        


@@ -1151,7 +1198,7 @@ uint8_t iso14443b_select_card(iso14b_card_select_t *card )
        
        // first, wake up the tag
        CodeAndTransmit14443bAsReader(wupb, sizeof(wupb));
        
        // first, wake up the tag
        CodeAndTransmit14443bAsReader(wupb, sizeof(wupb));

-       GetTagSamplesFor14443bDemod(TRUE); //select_card
+       GetTagSamplesFor14443bDemod(); //select_card

        
        // ATQB too short?
        if (Demod.len < 14) return 2;
        
        // ATQB too short?
        if (Demod.len < 14) return 2;


@@ -1175,7 +1222,7 @@ uint8_t iso14443b_select_card(iso14b_card_select_t *card )
     ComputeCrc14443(CRC_14443_B, attrib, 9, attrib + 9, attrib + 10);
 
     CodeAndTransmit14443bAsReader(attrib, sizeof(attrib));
     ComputeCrc14443(CRC_14443_B, attrib, 9, attrib + 9, attrib + 10);
 
     CodeAndTransmit14443bAsReader(attrib, sizeof(attrib));

-    GetTagSamplesFor14443bDemod(TRUE);//select_card
+    GetTagSamplesFor14443bDemod();//select_card

 
     // Answer to ATTRIB too short?
     if(Demod.len < 3) return 2;
 
     // Answer to ATTRIB too short?
     if(Demod.len < 3) return 2;


@@ -1261,7 +1308,7 @@ void ReadSTMemoryIso14443b(uint8_t numofblocks)
        // First command: wake up the tag using the INITIATE command
        uint8_t cmd1[] = {ISO14443B_INITIATE, 0x00, 0x97, 0x5b};
        CodeAndTransmit14443bAsReader(cmd1, sizeof(cmd1)); //no
        // First command: wake up the tag using the INITIATE command
        uint8_t cmd1[] = {ISO14443B_INITIATE, 0x00, 0x97, 0x5b};
        CodeAndTransmit14443bAsReader(cmd1, sizeof(cmd1)); //no

-       GetTagSamplesFor14443bDemod(TRUE); // no
+       GetTagSamplesFor14443bDemod(); // no

 
        if (Demod.len == 0) {
                DbpString("No response from tag");
 
        if (Demod.len == 0) {
                DbpString("No response from tag");


@@ -1278,7 +1325,7 @@ void ReadSTMemoryIso14443b(uint8_t numofblocks)
        cmd1[1] = Demod.output[0];
        ComputeCrc14443(CRC_14443_B, cmd1, 2, &cmd1[2], &cmd1[3]);
        CodeAndTransmit14443bAsReader(cmd1, sizeof(cmd1)); //no
        cmd1[1] = Demod.output[0];
        ComputeCrc14443(CRC_14443_B, cmd1, 2, &cmd1[2], &cmd1[3]);
        CodeAndTransmit14443bAsReader(cmd1, sizeof(cmd1)); //no

-       GetTagSamplesFor14443bDemod(TRUE); //no
+       GetTagSamplesFor14443bDemod(); //no

        if (Demod.len != 3) {
                Dbprintf("Expected 3 bytes from tag, got %d", Demod.len);
                set_tracing(FALSE);     
        if (Demod.len != 3) {
                Dbprintf("Expected 3 bytes from tag, got %d", Demod.len);
                set_tracing(FALSE);     


@@ -1303,7 +1350,7 @@ void ReadSTMemoryIso14443b(uint8_t numofblocks)
        cmd1[0] = ISO14443B_GET_UID;
        ComputeCrc14443(CRC_14443_B, cmd1, 1 , &cmd1[1], &cmd1[2]);
        CodeAndTransmit14443bAsReader(cmd1, 3); // no --  Only first three bytes for this one
        cmd1[0] = ISO14443B_GET_UID;
        ComputeCrc14443(CRC_14443_B, cmd1, 1 , &cmd1[1], &cmd1[2]);
        CodeAndTransmit14443bAsReader(cmd1, 3); // no --  Only first three bytes for this one

-       GetTagSamplesFor14443bDemod(TRUE); //no
+       GetTagSamplesFor14443bDemod(); //no

        if (Demod.len != 10) {
                Dbprintf("Expected 10 bytes from tag, got %d", Demod.len);
                set_tracing(FALSE);     
        if (Demod.len != 10) {
                Dbprintf("Expected 10 bytes from tag, got %d", Demod.len);
                set_tracing(FALSE);     


@@ -1334,7 +1381,7 @@ void ReadSTMemoryIso14443b(uint8_t numofblocks)
                cmd1[1] = i;
                ComputeCrc14443(CRC_14443_B, cmd1, 2, &cmd1[2], &cmd1[3]);
                CodeAndTransmit14443bAsReader(cmd1, sizeof(cmd1)); //no
                cmd1[1] = i;
                ComputeCrc14443(CRC_14443_B, cmd1, 2, &cmd1[2], &cmd1[3]);
                CodeAndTransmit14443bAsReader(cmd1, sizeof(cmd1)); //no

-               GetTagSamplesFor14443bDemod(TRUE); //no
+               GetTagSamplesFor14443bDemod(); //no

                
                if (Demod.len != 6) { // Check if we got an answer from the tag
                        DbpString("Expected 6 bytes from tag, got less...");
                
                if (Demod.len != 6) { // Check if we got an answer from the tag
                        DbpString("Expected 6 bytes from tag, got less...");


@@ -1627,7 +1674,7 @@ void SendRawCommand14443B_Ex(UsbCommand *c)
                }
        
                CodeAndTransmit14443bAsReader(cmd, len); // raw         
                }
        
                CodeAndTransmit14443bAsReader(cmd, len); // raw         

-               GetTagSamplesFor14443bDemod(TRUE); // raw
+               GetTagSamplesFor14443bDemod(); // raw

                
                sendlen = MIN(Demod.len, USB_CMD_DATA_SIZE);
                status =  (Demod.len > 0) ? 0 : 1;
                
                sendlen = MIN(Demod.len, USB_CMD_DATA_SIZE);
                status =  (Demod.len > 0) ? 0 : 1;