iclass - updates

[proxmark3-svn] / armsrc / BigBuf.c

diff --git a/armsrc/BigBuf.c b/armsrc/BigBuf.c
index 56259e68577a8070b88f4cb7ff2198c4fc7b4846..a5fcea7d288515227fa6af5ca015efef69578459 100644 (file)
--- a/armsrc/BigBuf.c
+++ b/armsrc/BigBuf.c
@@ -13,6 +13,7 @@
 #include "proxmark3.h"
 #include "apps.h"
 #include "string.h"
+#include "util.h"
 
 // BigBuf is the large multi-purpose buffer, typically used to hold A/D samples or traces.
 // Also used to hold various smaller buffers and the Mifare Emulator Memory.
@@ -61,6 +62,10 @@ void BigBuf_Clear_ext(bool verbose)
                Dbprintf("Buffer cleared (%i bytes)",BIGBUF_SIZE);
 }
 
+void BigBuf_Clear_keep_EM(void)
+{
+       memset(BigBuf,0,BigBuf_hi);
+}
 
 // allocate a chunk of memory from BigBuf. We allocate high memory first. The unallocated memory
 // at the beginning of BigBuf is always for traces/samples
@@ -184,8 +189,12 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
        traceLen += iLen;
 
        // parity bytes
-       if (parity != NULL && iLen != 0) {
-               memcpy(trace + traceLen, parity, num_paritybytes);
+       if (num_paritybytes != 0) {
+               if (parity != NULL) {
+                       memcpy(trace + traceLen, parity, num_paritybytes);
+               } else {
+                       memset(trace + traceLen, 0x00, num_paritybytes);
+               }
        }
        traceLen += num_paritybytes;
 
@@ -234,6 +243,8 @@ int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwP
 
        return TRUE;
 }
+
+
 // Emulator memory
 uint8_t emlSet(uint8_t *data, uint32_t offset, uint32_t length){
        uint8_t* mem = BigBuf_get_EM_addr();