X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9ab7a6c75566a2d06e56a8a97173c6382a3c5b3d..9ca155ba443e8f2a9feb7640f4b461842cce9e35:/armsrc/util.c

diff --git a/armsrc/util.c b/armsrc/util.c
index 7a2895cf..9c6b3e8d 100644
--- a/armsrc/util.c
+++ b/armsrc/util.c
@@ -1,7 +1,13 @@
 //-----------------------------------------------------------------------------
-// Utility functions used in many places, not specific to any piece of code.
 // Jonathan Westhues, Sept 2005
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Utility functions used in many places, not specific to any piece of code.
 //-----------------------------------------------------------------------------
+
 #include "proxmark3.h"
 #include "util.h"
 #include "string.h"
@@ -229,3 +235,30 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers
 	strncat(dst, " ", len);
 	strncat(dst, v->buildtime, len);
 }
+
+//  -------------------------------------------------------------------------
+//  timer lib
+//  -------------------------------------------------------------------------
+//  test procedure:
+//
+//	ti = GetTickCount();
+//	SpinDelay(1000);
+//	ti = GetTickCount() - ti;
+//	Dbprintf("timer(1s): %d t=%d", ti, GetTickCount());
+
+void StartTickCount()
+{
+//  must be 0x40, but on my cpu - included divider is optimal
+//  0x20 - 1 ms / bit 
+//  0x40 - 2 ms / bit
+
+	AT91C_BASE_RTTC->RTTC_RTMR = AT91C_RTTC_RTTRST + 0x003B;
+}
+
+/*
+* Get the current count.
+*/
+uint32_t RAMFUNC GetTickCount(){
+	return AT91C_BASE_RTTC->RTTC_RTVR * 2;
+}
+