Minor changes, it may actually work now, need to test with a credentialed reader

[proxmark3-svn] / armsrc / iclass.c

diff --git a/armsrc/iclass.c b/armsrc/iclass.c
index 7474598b6168a7fd78203c3c3c2265e8ea7f4ba9..117e4035af7ec7290b55861de73f9ff6d6b942bb 100644 (file)
--- a/armsrc/iclass.c
+++ b/armsrc/iclass.c
@@ -1090,6 +1090,13 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived)
        CodeIClassTagAnswer(response4, sizeof(response4));
        memcpy(resp4, ToSend, ToSendMax); resp4Len = ToSendMax;
 
+
+       // Start from off (no field generated)
+       //FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+       //SpinDelay(200);
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);
+       SpinDelay(100);
+       StartCountSspClk();
        // We need to listen to the high-frequency, peak-detected path.
        SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
        FpgaSetupSsc();
@@ -1101,17 +1108,21 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived)
        uint32_t r2t_time =0;
 
        LED_A_ON();
-       bool displayDebug = true;
        bool buttonPressed = false;
        while(!exitLoop) {
-               displayDebug = true;
 
                LED_B_OFF();
+               //Signal tracer
+               // Can be used to get a trigger for an oscilloscope..
+               LED_C_OFF();
+
                if(!GetIClassCommandFromReader(receivedCmd, &len, 100)) {
                        buttonPressed = true;
                        break;
                }
                r2t_time = GetCountSspClk();
+               //Signal tracer
+               LED_C_ON();
 
                // Okay, look at the command now.
                if(receivedCmd[0] == 0x0a ) {
@@ -1119,13 +1130,11 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived)
                        resp = resp1; respLen = resp1Len; //order = 1;
                        respdata = &sof;
                        respsize = sizeof(sof);
-                       displayDebug = false;
                } else if(receivedCmd[0] == 0x0c) {
                        // Reader asks for anticollission CSN
                        resp = resp2; respLen = resp2Len; //order = 2;
                        respdata = response2;
                        respsize = sizeof(response2);
-                       //displayDebug = false;
                        //DbpString("Reader requests anticollission CSN:");
                } else if(receivedCmd[0] == 0x81) {
                        // Reader selects anticollission CSN.
@@ -1187,29 +1196,13 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived)
                if(respLen > 0) {
                        SendIClassAnswer(resp, respLen, 21);
                        t2r_time = GetCountSspClk();
-
-//                     }
-                       if(displayDebug) Dbprintf("R2T:(len=%d): %x %x %x %x %x %x %x %x %x\nT2R: (total/data =%d/%d): %x %x %x %x %x %x %x %x %x",
-                       len,
-                       receivedCmd[0], receivedCmd[1], receivedCmd[2],
-                       receivedCmd[3], receivedCmd[4], receivedCmd[5],
-                       receivedCmd[6], receivedCmd[7], receivedCmd[8],
-                       respLen,respsize,
-                       resp[0], resp[1], resp[2],
-                       resp[3], resp[4], resp[5],
-                       resp[6], resp[7], resp[8]);
-
                }
 
                if (tracing) {
-                       //LogTrace(receivedCmd,len, rsamples, Uart.parityBits, TRUE);
-
                        LogTrace(receivedCmd,len, (r2t_time-time_0)<< 4, Uart.parityBits,TRUE);
                        LogTrace(NULL,0, (r2t_time-time_0) << 4, 0,TRUE);
 
                        if (respdata != NULL) {
-                               //LogTrace(respdata,respsize, rsamples, SwapBits(GetParity(respdata,respsize),respsize), FALSE);
-                               //if(!LogTrace(resp,respLen, rsamples,SwapBits(GetParity(respdata,respsize),respsize),FALSE))
                                LogTrace(respdata,respsize, (t2r_time-time_0) << 4,SwapBits(GetParity(respdata,respsize),respsize),FALSE);
                                LogTrace(NULL,0, (t2r_time-time_0) << 4,0,FALSE);
 
@@ -1236,41 +1229,34 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived)
 
 static int SendIClassAnswer(uint8_t *resp, int respLen, int delay)
 {
-       int i = 0, u = 0, d = 0;
+       int i = 0, d=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);
+
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR|FPGA_HF_SIMULATOR_MODULATE_424K);
+
        AT91C_BASE_SSC->SSC_THR = 0x00;
        FpgaSetupSsc();
-       
-       // send cycle
-       for(;;) {
-               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-                       volatile uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
-                       (void)b;
+       while(!BUTTON_PRESS()) {
+               if((AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY)){
+                       b = AT91C_BASE_SSC->SSC_RHR; (void) b;
                }
-               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)){
+                       b = 0x00;
                        if(d < delay) {
-                               b = 0x00;
                                d++;
                        }
-                       else if(i >= respLen) {
-                               b = 0x00;
-                               u++;
-                       } else {
-                               b = resp[i];
-                               u++;
-                               if(u > 1) { i++; u = 0; }
+                       else {
+                               if( i < respLen){
+                                       b = resp[i];
+                                       //Hack
+                                       //b = 0xAC;
+                               }
+                               i++;
                        }
                        AT91C_BASE_SSC->SSC_THR = b;
-
-                       if(u > 4) break;
-               }
-               if(BUTTON_PRESS()) {
-                       break;
                }
+
+               if (i > respLen +4) break;
        }
 
        return 0;
@@ -1284,7 +1270,6 @@ static int SendIClassAnswer(uint8_t *resp, int respLen, int delay)
 static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int *wait)
 {
   int c;
-
   FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
   AT91C_BASE_SSC->SSC_THR = 0x00;
   FpgaSetupSsc();
@@ -1360,12 +1345,12 @@ void CodeIClassCommand(const uint8_t * cmd, int len)
     b = cmd[i];
     for(j = 0; j < 4; j++) {
       for(k = 0; k < 4; k++) {
-       if(k == (b & 3)) {
-           ToSend[++ToSendMax] = 0x0f;
-       }
-       else {
-           ToSend[++ToSendMax] = 0x00;
-       }
+                       if(k == (b & 3)) {
+                               ToSend[++ToSendMax] = 0x0f;
+                       }
+                       else {
+                               ToSend[++ToSendMax] = 0x00;
+                       }
       }
       b >>= 2;
     }