X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f71f4deb8f8f1e932c81f3e62e6ab67012e07b33..d1cea2a4a0fda85e14dff91ba6d802dba425de65:/armsrc/hitag2.c

diff --git a/armsrc/hitag2.c b/armsrc/hitag2.c
index 4a2d9d9d..719164d1 100644
--- a/armsrc/hitag2.c
+++ b/armsrc/hitag2.c
@@ -21,6 +21,7 @@
 #include "util.h"
 #include "hitag2.h"
 #include "string.h"
+#include "BigBuf.h"
 
 static bool bQuiet;
 
@@ -30,32 +31,6 @@ static bool bPwd;
 static bool bSuccessful;
 
 
-static int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwParity, int bReader)
-{
-  static uint16_t traceLen = 0;
-  uint8_t *trace = BigBuf_get_addr();
-
-  // Return when trace is full
-  if (traceLen + sizeof(rsamples) + sizeof(dwParity) + sizeof(iBits) + nbytes(iBits) > BigBuf_max_traceLen()) return FALSE;
-  
-  // Trace the random, i'm curious
-  rsamples += iSamples;
-  trace[traceLen++] = ((rsamples >> 0) & 0xff);
-  trace[traceLen++] = ((rsamples >> 8) & 0xff);
-  trace[traceLen++] = ((rsamples >> 16) & 0xff);
-  trace[traceLen++] = ((rsamples >> 24) & 0xff);
-  if (!bReader) {
-    trace[traceLen - 1] |= 0x80;
-  }
-  trace[traceLen++] = ((dwParity >> 0) & 0xff);
-  trace[traceLen++] = ((dwParity >> 8) & 0xff);
-  trace[traceLen++] = ((dwParity >> 16) & 0xff);
-  trace[traceLen++] = ((dwParity >> 24) & 0xff);
-  trace[traceLen++] = iBits;
-  memcpy(trace + traceLen, btBytes, nbytes(iBits));
-  traceLen += nbytes(iBits);
-  return TRUE;
-}
 
 struct hitag2_tag {
 	uint32_t uid;
@@ -735,22 +710,24 @@ void SnoopHitag(uint32_t type) {
 	byte_t rx[HITAG_FRAME_LEN];
 	size_t rxlen=0;
 	
+	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
+	// Clean up trace and prepare it for storing frames
+	set_tracing(TRUE);
+	clear_trace();
+	
 	auth_table_len = 0;
 	auth_table_pos = 0;
+
 	BigBuf_free();
     auth_table = (byte_t *)BigBuf_malloc(AUTH_TABLE_LENGTH);
 	memset(auth_table, 0x00, AUTH_TABLE_LENGTH);
 
-	// Clean up trace and prepare it for storing frames
-	iso14a_set_tracing(TRUE);
-	iso14a_clear_trace();
-	
 	DbpString("Starting Hitag2 snoop");
 	LED_D_ON();
 	
 	// Set up eavesdropping mode, frequency divisor which will drive the FPGA
 	// and analog mux selection.
-	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT  | FPGA_LF_EDGE_DETECT_TOGGLE_MODE);
 	FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
 	SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
@@ -947,6 +924,12 @@ void SimulateHitagTag(bool tag_mem_supplied, byte_t* data) {
 	bool bQuitTraceFull = false;
 	bQuiet = false;
 	
+	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
+	// Clean up trace and prepare it for storing frames
+	set_tracing(TRUE);
+	clear_trace();
+
 	auth_table_len = 0;
 	auth_table_pos = 0;
     byte_t* auth_table;
@@ -954,10 +937,6 @@ void SimulateHitagTag(bool tag_mem_supplied, byte_t* data) {
     auth_table = (byte_t *)BigBuf_malloc(AUTH_TABLE_LENGTH);
 	memset(auth_table, 0x00, AUTH_TABLE_LENGTH);
 
-	// Clean up trace and prepare it for storing frames
-	iso14a_set_tracing(TRUE);
-	iso14a_clear_trace();
-
 	DbpString("Starting Hitag2 simulation");
 	LED_D_ON();
 	hitag2_init();
@@ -978,7 +957,6 @@ void SimulateHitagTag(bool tag_mem_supplied, byte_t* data) {
 	
 	// Set up simulator mode, frequency divisor which will drive the FPGA
 	// and analog mux selection.
-	FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_READER_FIELD);
 	FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
 	SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
@@ -1142,8 +1120,8 @@ void ReaderHitag(hitag_function htf, hitag_data* htd) {
 	bSuccessful = false;
   
 	// Clean up trace and prepare it for storing frames
-	iso14a_set_tracing(TRUE);
-	iso14a_clear_trace();
+	set_tracing(TRUE);
+	clear_trace();
 
 	DbpString("Starting Hitag reader family");