X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f62b5e1204517129be388dbdbf8041337dea53f0..7504dc50d539f1f9b0b99064f5c7d38e373890fa:/armsrc/util.c

diff --git a/armsrc/util.c b/armsrc/util.c
index 1dd8dc75..c00fa011 100644
--- a/armsrc/util.c
+++ b/armsrc/util.c
@@ -39,9 +39,8 @@ size_t nbytes(size_t nbits) {
 }
 
 uint32_t SwapBits(uint32_t value, int nrbits) {
-	int i;
 	uint32_t newvalue = 0;
-	for(i = 0; i < nrbits; i++) {
+	for(int i = 0; i < nrbits; i++) {
 		newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i);
 	}
 	return newvalue;
@@ -74,6 +73,7 @@ void rol(uint8_t *data, const size_t len){
     }
     data[len-1] = first;
 }
+
 void lsl (uint8_t *data, size_t len) {
     for (size_t n = 0; n < len - 1; n++) {
         data[n] = (data[n] << 1) | (data[n+1] >> 7);
@@ -345,7 +345,9 @@ void StartCountUS()
 	}
 
 uint32_t RAMFUNC GetCountUS(){
-	return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10);
+	//return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10);
+	//  By suggestion from PwPiwi, http://www.proxmark.org/forum/viewtopic.php?pid=17548#p17548
+	return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV * 2) / 3); 
 }
 
 static uint32_t GlobalUsCounter = 0;
@@ -419,15 +421,10 @@ void StartCountSspClk()
 	while (AT91C_BASE_TC0->TC_CV < 0xFFF0);
 }
 
-
 uint32_t RAMFUNC GetCountSspClk(){
-	uint32_t tmp_count;
-	tmp_count = (AT91C_BASE_TC2->TC_CV << 16) | AT91C_BASE_TC0->TC_CV;
-	if ((tmp_count & 0x0000ffff) == 0) { //small chance that we may have missed an increment in TC2
+	uint32_t tmp_count = (AT91C_BASE_TC2->TC_CV << 16) | AT91C_BASE_TC0->TC_CV;
+	if ((tmp_count & 0x0000ffff) == 0)  //small chance that we may have missed an increment in TC2
 		return (AT91C_BASE_TC2->TC_CV << 16);
-	} 
-	else {
-		return tmp_count;
-	}
+	return tmp_count;
 }