X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f7e3ed82874bfd8951c90536bd7185d599d6dbf8..4df3eb3f739af80b6fdc8f737fc906d254ebd0b5:/armsrc/util.c?ds=inline

diff --git a/armsrc/util.c b/armsrc/util.c
index ae6408cf..f2298290 100644
--- a/armsrc/util.c
+++ b/armsrc/util.c
@@ -1,67 +1,28 @@
 //-----------------------------------------------------------------------------
-// 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"
 
-void *memcpy(void *dest, const void *src, int len)
-{
-	uint8_t *d = dest;
-	const uint8_t *s = src;
-	while((len--) > 0) {
-		*d = *s;
-		d++;
-		s++;
-	}
-	return dest;
+size_t nbytes(size_t nbits) {
+	return (nbits/8)+((nbits%8)>0);
 }
 
-void *memset(void *dest, int c, int len)
-{
-	uint8_t *d = dest;
-	while((len--) > 0) {
-		*d = c;
-		d++;
+uint32_t SwapBits(uint32_t value, int nrbits) {
+	int i;
+	uint32_t newvalue = 0;
+	for(i = 0; i < nrbits; i++) {
+		newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i);
 	}
-	return dest;
-}
-
-int memcmp(const void *av, const void *bv, int len)
-{
-	const uint8_t *a = av;
-	const uint8_t *b = bv;
-
-	while((len--) > 0) {
-		if(*a != *b) {
-			return *a - *b;
-		}
-		a++;
-		b++;
-	}
-	return 0;
-}
-
-int strlen(const char *str)
-{
-	int l = 0;
-	while(*str) {
-		l++;
-		str++;
-	}
-	return l;
-}
-
-char* strncat(char *dest, const char *src, unsigned int n)
-{
-	unsigned int dest_len = strlen(dest);
-	unsigned int i;
-
-	for (i = 0 ; i < n && src[i] != '\0' ; i++)
-		dest[dest_len + i] = src[i];
-	dest[dest_len + i] = '\0';
-
-	return dest;
+	return newvalue;
 }
 
 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
@@ -287,3 +248,69 @@ 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 + 0x001D; // was 0x003B
+}
+
+/*
+* Get the current count.
+*/
+uint32_t RAMFUNC GetTickCount(){
+	return AT91C_BASE_RTTC->RTTC_RTVR;// was * 2;
+}
+
+//  -------------------------------------------------------------------------
+//  microseconds timer 
+//  -------------------------------------------------------------------------
+void StartCountUS()
+{
+	AT91C_BASE_PMC->PMC_PCER |= (0x1 << 12) | (0x1 << 13) | (0x1 << 14);
+//	AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC1XC1S_TIOA0;
+	AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE;
+
+	// fast clock
+	AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable
+	AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK | // MCK(48MHz)/32 -- tick=1.5mks
+														AT91C_TC_WAVE | AT91C_TC_WAVESEL_UP_AUTO | AT91C_TC_ACPA_CLEAR |
+														AT91C_TC_ACPC_SET | AT91C_TC_ASWTRG_SET;
+	AT91C_BASE_TC0->TC_RA = 1;
+	AT91C_BASE_TC0->TC_RC = 0xBFFF + 1; // 0xC000
+	
+	AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS; // timer disable  
+	AT91C_BASE_TC1->TC_CMR = AT91C_TC_CLKS_XC1; // from timer 0
+
+	AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN;
+	AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN;
+	AT91C_BASE_TCB->TCB_BCR = 1;
+}
+
+uint32_t RAMFUNC GetCountUS(){
+	return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10);
+}
+
+static uint32_t GlobalUsCounter = 0;
+
+uint32_t RAMFUNC GetDeltaCountUS(){
+	uint32_t g_cnt = GetCountUS();
+	uint32_t g_res = g_cnt - GlobalUsCounter;
+	GlobalUsCounter = g_cnt;
+	return g_res;
+}
+
+