fix 'hf iclass snoop'

[proxmark3-svn] / armsrc / BigBuf.c

diff --git a/armsrc/BigBuf.c b/armsrc/BigBuf.c
index e2f513115277b6a3b6bfadd9bae4b23b5a67e0dd..ce97e41f0dc4c15de703896c9424c49841cd9078 100644 (file)
--- a/armsrc/BigBuf.c
+++ b/armsrc/BigBuf.c
@@ -21,8 +21,8 @@
 /* BigBuf memory layout:
 Pointer to highest available memory: BigBuf_hi
 
-    high BIGBUF_SIZE
-    reserved = BigBuf_malloc()  subtracts amount from BigBuf_hi,   
+       high BIGBUF_SIZE
+       reserved = BigBuf_malloc()  subtracts amount from BigBuf_hi,
        low  0x00
 */
 
@@ -39,6 +39,7 @@ static uint8_t *emulator_memory = NULL;
 static uint32_t traceLen = 0;
 static bool tracing = true;
 
+
 // get the address of BigBuf
 uint8_t *BigBuf_get_addr(void)
 {
@@ -53,7 +54,7 @@ uint8_t *BigBuf_get_EM_addr(void)
        if (emulator_memory == NULL) {
                emulator_memory = BigBuf_malloc(CARD_MEMORY_SIZE);
        }
-       
+
        return emulator_memory;
 }
 
@@ -63,17 +64,22 @@ void BigBuf_Clear(void)
 {
        BigBuf_Clear_ext(true);
 }
+
+
 // clear ALL of BigBuf
 void BigBuf_Clear_ext(bool verbose)
 {
        memset(BigBuf, 0, BIGBUF_SIZE);
-       if (verbose) 
-               Dbprintf("Buffer cleared (%i bytes)",BIGBUF_SIZE);
+       if (verbose)
+               Dbprintf("Buffer cleared (%i bytes)", BIGBUF_SIZE);
 }
+
+
 void BigBuf_Clear_EM(void){
        memset(BigBuf_get_EM_addr(), 0, CARD_MEMORY_SIZE);
 }
 
+
 void BigBuf_Clear_keep_EM(void)
 {
        memset(BigBuf, 0, BigBuf_hi);
@@ -83,11 +89,11 @@ void BigBuf_Clear_keep_EM(void)
 // at the beginning of BigBuf is always for traces/samples
 uint8_t *BigBuf_malloc(uint16_t chunksize)
 {
-       if (BigBuf_hi - chunksize < 0) { 
-               return NULL;                                                    // no memory left
+       if (BigBuf_hi - chunksize < 0) {
+               return NULL;                            // no memory left
        } else {
-               chunksize = (chunksize + 3) & 0xfffc;   // round to next multiple of 4
-               BigBuf_hi -= chunksize;                                 // aligned to 4 Byte boundary 
+               chunksize = (chunksize + 3) & 0xfffc;   // round to next multiple of 4
+               BigBuf_hi -= chunksize;                 // aligned to 4 Byte boundary
                return (uint8_t *)BigBuf + BigBuf_hi;
        }
 }
@@ -128,18 +134,22 @@ uint16_t BigBuf_max_traceLen(void)
        return BigBuf_hi;
 }
 
+
 void clear_trace() {
        traceLen = 0;
 }
 
+
 void set_tracing(bool enable) {
        tracing = enable;
 }
 
+
 bool get_tracing(void) {
        return tracing;
 }
 
+
 /**
  * Get the number of bytes traced
  * @return
@@ -149,6 +159,7 @@ uint16_t BigBuf_get_traceLen(void)
        return traceLen;
 }
 
+
 /**
   This is a function to store traces. All protocols can use this generic tracer-function.
   The traces produced by calling this function can be fetched on the client-side
@@ -162,14 +173,14 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
 
        uint8_t *trace = BigBuf_get_addr();
 
-       uint32_t num_paritybytes = (iLen-1)/8 + 1;      // number of valid paritybytes in *parity
+       uint32_t num_paritybytes = (iLen-1)/8 + 1;  // number of valid paritybytes in *parity
        uint32_t duration = timestamp_end - timestamp_start;
 
        // Return when trace is full
        uint16_t max_traceLen = BigBuf_max_traceLen();
 
        if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= max_traceLen) {
-               tracing = false;        // don't trace any more
+               tracing = false;    // don't trace any more
                return false;
        }
        // Traceformat:
@@ -237,7 +248,7 @@ int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwP
        // Return when trace is full
        if (traceLen + sizeof(rsamples) + sizeof(dwParity) + sizeof(iBits) + iLen > BigBuf_max_traceLen()) {
                return false;
-       }       
+       }
 
        //Hitag traces appear to use this traceformat:
        // 32 bits timestamp (little endian,Highest Bit used as readerToTag flag)