FIX: minor parseing bug when loading dumpkeys.bin file.

[proxmark3-svn] / armsrc / iso15693.c

diff --git a/armsrc/iso15693.c b/armsrc/iso15693.c
index 42cb0ab89c3c7bd3faee2958dfdff9b326e1c145..11a499026f39bba79606921da50904ef440a21f4 100644 (file)
--- a/armsrc/iso15693.c
+++ b/armsrc/iso15693.c
@@ -463,28 +463,15 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int
                        AT91C_BASE_SSC->SSC_THR = 0x43;
                }
                if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-                       int8_t b;
-                       b = (int8_t)AT91C_BASE_SSC->SSC_RHR;
+                       int8_t b = (int8_t)AT91C_BASE_SSC->SSC_RHR;
 
                        // The samples are correlations against I and Q versions of the
                        // tone that the tag AM-modulates, so every other sample is I,
                        // every other is Q. We just want power, so abs(I) + abs(Q) is
                        // close to what we want.
-                       if(getNext) {
-                               int8_t r;
-
-                               if(b < 0) {
-                                       r = -b;
-                               } else {
-                                       r = b;
-                               }
-                               if(prev < 0) {
-                                       r -= prev;
-                               } else {
-                                       r += prev;
-                               }
+                       if (getNext) {
 
-                               dest[c++] = (uint8_t)r;
+                               dest[c++] = abs(b) + abs(prev);
 
                                if(c >= 20000) {
                                        break;
@@ -837,27 +824,27 @@ static void BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber )
 // Now the VICC>VCD responses when we are simulating a tag
  static void BuildInventoryResponse( uint8_t *uid)
 {
-       uint8_t cmd[13];
+       uint8_t cmd[12];
 
        uint16_t crc;
        // one sub-carrier, inventory, 1 slot, fast rate
        // AFI is at bit 5 (1<<4) when doing an INVENTORY
-       cmd[0] = 0x0d;   // COM LEN? Data 8 + 4 //(1 << 2) | (1 << 5) | (1 << 1);
-       cmd[1] = 0; // com_Adr
-       cmd[2] = 0; // status   00 = success
+    //(1 << 2) | (1 << 5) | (1 << 1);
+       cmd[0] = 0; // 
+       cmd[1] = 0; // DSFID (data storage format identifier).  0x00 = not supported
        // 64-bit UID
-       cmd[3] = uid[7]; //0x32;
-       cmd[4] = uid[6]; //0x4b;
-       cmd[5] = uid[5]; //0x03;
-       cmd[6] = uid[4]; //0x01;
-       cmd[7] = uid[3]; //0x00;
-       cmd[8] = uid[2]; //0x10;
-       cmd[9] = uid[1]; //0x05;
-       cmd[10] = uid[0]; //0xe0;
+       cmd[2] = uid[7]; //0x32;
+       cmd[3] = uid[6]; //0x4b;
+       cmd[4] = uid[5]; //0x03;
+       cmd[5] = uid[4]; //0x01;
+       cmd[6] = uid[3]; //0x00;
+       cmd[7] = uid[2]; //0x10;
+       cmd[8] = uid[1]; //0x05;
+       cmd[9] = uid[0]; //0xe0;
        //Now the CRC
        crc = Crc(cmd, 10);
-       cmd[11] = crc & 0xff;
-       cmd[12] = crc >> 8;
+       cmd[10] = crc & 0xff;
+       cmd[11] = crc >> 8;
 
        CodeIso15693AsReader(cmd, sizeof(cmd));
 }
@@ -1124,9 +1111,6 @@ void SimTagIso15693(uint32_t parameter, uint8_t *uid)
        
        memset(buf, 0x00, 100);
        
-       // Inventory response
-       BuildInventoryResponse(uid);
-       
        FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 
        SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
@@ -1149,6 +1133,9 @@ void SimTagIso15693(uint32_t parameter, uint8_t *uid)
        {
                // Build a suitable reponse to the reader INVENTORY cocmmand
                // not so obsvious, but in the call to BuildInventoryResponse,  the command is copied to the global ToSend buffer used below.
+               
+               BuildInventoryResponse(uid);
+       
                TransmitTo15693Reader(ToSend, ToSendMax, &tsamples, &wait);
        }
 
@@ -1156,6 +1143,10 @@ void SimTagIso15693(uint32_t parameter, uint8_t *uid)
                buf[0], buf[1], buf[2], buf[3],
                buf[4], buf[5], buf[6], buf[7], buf[8]);
 
+       Dbprintf("Simulationg uid: %x %x %x %x %x %x %x %x",
+               uid[0], uid[1], uid[2], uid[3],
+               uid[4], uid[5], uid[6], uid[7]);
+
        LED_A_OFF();
        LED_B_OFF();
        LED_C_OFF();