FIX: hf mf eload - now supports specifying 0,1,2,4 in card memory for the file to...

[proxmark3-svn] / armsrc / iso15693.c

diff --git a/armsrc/iso15693.c b/armsrc/iso15693.c
index 884ed9762da0a699f33735c274be4cc9b9561ec4..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;
@@ -842,8 +829,9 @@ static void BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber )
        uint16_t crc;
        // one sub-carrier, inventory, 1 slot, fast rate
        // AFI is at bit 5 (1<<4) when doing an INVENTORY
-       cmd[0] = 0; //(1 << 2) | (1 << 5) | (1 << 1);
-       cmd[1] = 0;
+    //(1 << 2) | (1 << 5) | (1 << 1);
+       cmd[0] = 0; // 
+       cmd[1] = 0; // DSFID (data storage format identifier).  0x00 = not supported
        // 64-bit UID
        cmd[2] = uid[7]; //0x32;
        cmd[3] = uid[6]; //0x4b;
@@ -1123,9 +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);
@@ -1148,6 +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);
        }
 
@@ -1155,6 +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();