CHG: moved some #define into include\common.h (which is call by apps.h), so we...

[proxmark3-svn] / armsrc / iso15693.c

diff --git a/armsrc/iso15693.c b/armsrc/iso15693.c
index 1750152678da3aba436d41d553e42f7538a7cef8..888f6aaf0709fdba641a79009bf3fa47291026b8 100644 (file)
--- a/armsrc/iso15693.c
+++ b/armsrc/iso15693.c
@@ -295,21 +295,19 @@ static void TransmitTo15693Reader(const uint8_t *cmd, int len, int *samples, int
 //             number of decoded bytes
 static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed)
 {
-       int c = 0;
        uint8_t *dest = BigBuf_get_addr();
-       int getNext = 0;
 
+       int c = 0;
+       int getNext = FALSE;
        int8_t prev = 0;
 
-// NOW READ RESPONSE
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
-       //spindelay(60);        // greg - experiment to get rid of some of the 0 byte/failed reads
-       c = 0;
-       getNext = FALSE;
+       SpinDelay(100); // greg - experiment to get rid of some of the 0 byte/failed reads
+
        for(;;) {
-               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY))
                        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;
@@ -321,11 +319,14 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int *
                        if(getNext) {
                                int8_t r;
 
-                               if(b < 0) {
-                                       r = -b;
-                               } else {
-                                       r = b;
-                               }
+                               r = ABS(b);
+                               
+                               // if(b < 0) {
+                                       // r = -b;
+                               // } else {
+                                       // r = b;
+                               // }
+                               // ABS(prev)
                                if(prev < 0) {
                                        r -= prev;
                                } else {
@@ -437,29 +438,26 @@ static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int *
        } // "end if correlation > 0"   (max/(arraylen(FrameSOF)/skip))
        return k; // return the number of bytes demodulated
 
-///    DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2));
-
+//     DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2));
 }
 
 
 // Now the GetISO15693 message from sniffing command
 static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed)
 {
-       int c = 0;
        uint8_t *dest = BigBuf_get_addr();
-       int getNext = 0;
 
+       int c = 0;
+       int getNext = FALSE;
        int8_t prev = 0;
 
-// NOW READ RESPONSE
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
-       //spindelay(60);        // greg - experiment to get rid of some of the 0 byte/failed reads
-       c = 0;
-       getNext = FALSE;
+       SpinDelay(100); // greg - experiment to get rid of some of the 0 byte/failed reads
+
        for(;;) {
-               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
+               if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY))
                        AT91C_BASE_SSC->SSC_THR = 0x43;
-               }
+
                if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
                        int8_t b = (int8_t)AT91C_BASE_SSC->SSC_RHR;
 
@@ -470,11 +468,12 @@ static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int
                        if(getNext) {
                                int8_t r;
 
-                               if(b < 0) {
-                                       r = -b;
-                               } else {
-                                       r = b;
-                               }
+                               r = ABS(b);
+                               // if(b < 0) {
+                                       // r = -b;
+                               // } else {
+                                       // r = b;
+                               // }
                                if(prev < 0) {
                                        r -= prev;
                                } else {