X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ba8a80b30c4da36ef10854b53b06d9ff9acaca44..14006804dd8e68db2a877e0ee588f10a1b178caf:/armsrc/util.c

diff --git a/armsrc/util.c b/armsrc/util.c
index a102bbb5..3870a6c6 100644
--- a/armsrc/util.c
+++ b/armsrc/util.c
@@ -1,237 +1,312 @@
-//-----------------------------------------------------------------------------
-// Utility functions used in many places, not specific to any piece of code.
-// Jonathan Westhues, Sept 2005
-//-----------------------------------------------------------------------------
-#include <proxmark3.h>
-#include "apps.h"
-
-void *memcpy(void *dest, const void *src, int len)
-{
-	BYTE *d = dest;
-	const BYTE *s = src;
-	while((len--) > 0) {
-		*d = *s;
-		d++;
-		s++;
-	}
-	return dest;
-}
-
-void *memset(void *dest, int c, int len)
-{
-	BYTE *d = dest;
-	while((len--) > 0) {
-		*d = c;
-		d++;
-	}
-	return dest;
-}
-
-int memcmp(const void *av, const void *bv, int len)
-{
-	const BYTE *a = av;
-	const BYTE *b = bv;
-
-	while((len--) > 0) {
-		if(*a != *b) {
-			return *a - *b;
-		}
-		a++;
-		b++;
-	}
-	return 0;
-}
-
-int strlen(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;
-}
-
-
-void LEDsoff()
-{
-	LED_A_OFF();
-	LED_B_OFF();
-	LED_C_OFF();
-	LED_D_OFF();
-}
-
-// LEDs: R(C) O(A) G(B) -- R(D) [1, 2, 4 and 8]
-void LED(int led, int ms)
-{
-	if (led & LED_RED)
-		LED_C_ON();
-	if (led & LED_ORANGE)
-		LED_A_ON();
-	if (led & LED_GREEN)
-		LED_B_ON();
-	if (led & LED_RED2)
-		LED_D_ON();
-
-	if (!ms)
-		return;
-
-	SpinDelay(ms);
-
-	if (led & LED_RED)
-		LED_C_OFF();
-	if (led & LED_ORANGE)
-		LED_A_OFF();
-	if (led & LED_GREEN)
-		LED_B_OFF();
-	if (led & LED_RED2)
-		LED_D_OFF();
-}
-
-
-// Determine if a button is double clicked, single clicked,
-// not clicked, or held down (for ms || 1sec)
-// In general, don't use this function unless you expect a
-// double click, otherwise it will waste 500ms -- use BUTTON_HELD instead
-int BUTTON_CLICKED(int ms)
-{
-	// Up to 500ms in between clicks to mean a double click
-	int ticks = (48000 * (ms ? ms : 1000)) >> 10;
-
-	// If we're not even pressed, forget about it!
-	if (!BUTTON_PRESS())
-		return BUTTON_NO_CLICK;
-
-	// Borrow a PWM unit for my real-time clock
-	PWM_ENABLE = PWM_CHANNEL(0);
-	// 48 MHz / 1024 gives 46.875 kHz
-	PWM_CH_MODE(0) = PWM_CH_MODE_PRESCALER(10);
-	PWM_CH_DUTY_CYCLE(0) = 0;
-	PWM_CH_PERIOD(0) = 0xffff;
-
-	WORD start = (WORD)PWM_CH_COUNTER(0);
-
-	int letoff = 0;
-	for(;;)
-	{
-		WORD now = (WORD)PWM_CH_COUNTER(0);
-
-		// We haven't let off the button yet
-		if (!letoff)
-		{
-			// We just let it off!
-			if (!BUTTON_PRESS())
-			{
-				letoff = 1;
-
-				// reset our timer for 500ms
-				start = (WORD)PWM_CH_COUNTER(0);
-				ticks = (48000 * (500)) >> 10;
-			}
-
-			// Still haven't let it off
-			else
-				// Have we held down a full second?
-				if (now == (WORD)(start + ticks))
-					return BUTTON_HOLD;
-		}
-
-		// We already let off, did we click again?
-		else
-			// Sweet, double click!
-			if (BUTTON_PRESS())
-				return BUTTON_DOUBLE_CLICK;
-
-			// Have we ran out of time to double click?
-			else
-				if (now == (WORD)(start + ticks))
-					// At least we did a single click
-					return BUTTON_SINGLE_CLICK;
-
-		WDT_HIT();
-	}
-
-	// We should never get here
-	return BUTTON_ERROR;
-}
-
-// Determine if a button is held down
-int BUTTON_HELD(int ms)
-{
-	// If button is held for one second
-	int ticks = (48000 * (ms ? ms : 1000)) >> 10;
-
-	// If we're not even pressed, forget about it!
-	if (!BUTTON_PRESS())
-		return BUTTON_NO_CLICK;
-
-	// Borrow a PWM unit for my real-time clock
-	PWM_ENABLE = PWM_CHANNEL(0);
-	// 48 MHz / 1024 gives 46.875 kHz
-	PWM_CH_MODE(0) = PWM_CH_MODE_PRESCALER(10);
-	PWM_CH_DUTY_CYCLE(0) = 0;
-	PWM_CH_PERIOD(0) = 0xffff;
-
-	WORD start = (WORD)PWM_CH_COUNTER(0);
-
-	for(;;)
-	{
-		WORD now = (WORD)PWM_CH_COUNTER(0);
-
-		// As soon as our button let go, we didn't hold long enough
-		if (!BUTTON_PRESS())
-			return BUTTON_SINGLE_CLICK;
-
-		// Have we waited the full second?
-		else
-			if (now == (WORD)(start + ticks))
-				return BUTTON_HOLD;
-
-		WDT_HIT();
-	}
-
-	// We should never get here
-	return BUTTON_ERROR;
-}
-
-// attempt at high resolution microsecond timer
-// beware: timer counts in 21.3uS increments (1024/48Mhz)
-void SpinDelayUs(int us)
-{
-	int ticks = (48*us) >> 10;
-
-	// Borrow a PWM unit for my real-time clock
-	PWM_ENABLE = PWM_CHANNEL(0);
-	// 48 MHz / 1024 gives 46.875 kHz
-	PWM_CH_MODE(0) = PWM_CH_MODE_PRESCALER(10);
-	PWM_CH_DUTY_CYCLE(0) = 0;
-	PWM_CH_PERIOD(0) = 0xffff;
-
-	WORD start = (WORD)PWM_CH_COUNTER(0);
-
-	for(;;) {
-		WORD now = (WORD)PWM_CH_COUNTER(0);
-		if (now == (WORD)(start + ticks))
-			return;
-
-		WDT_HIT();
-	}
-}
-
-void SpinDelay(int ms)
-{
-  // convert to uS and call microsecond delay function
-	SpinDelayUs(ms*1000);
-}
+//-----------------------------------------------------------------------------
+// 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"
+
+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 newvalue;
+}
+
+void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
+{
+	while (len--) {
+		dest[len] = (uint8_t) n;
+		n >>= 8;
+	}
+}
+
+uint64_t bytes_to_num(uint8_t* src, size_t len)
+{
+	uint64_t num = 0;
+	while (len--)
+	{
+		num = (num << 8) | (*src);
+		src++;
+	}
+	return num;
+}
+
+void LEDsoff()
+{
+	LED_A_OFF();
+	LED_B_OFF();
+	LED_C_OFF();
+	LED_D_OFF();
+}
+
+// LEDs: R(C) O(A) G(B) -- R(D) [1, 2, 4 and 8]
+void LED(int led, int ms)
+{
+	if (led & LED_RED)
+		LED_C_ON();
+	if (led & LED_ORANGE)
+		LED_A_ON();
+	if (led & LED_GREEN)
+		LED_B_ON();
+	if (led & LED_RED2)
+		LED_D_ON();
+
+	if (!ms)
+		return;
+
+	SpinDelay(ms);
+
+	if (led & LED_RED)
+		LED_C_OFF();
+	if (led & LED_ORANGE)
+		LED_A_OFF();
+	if (led & LED_GREEN)
+		LED_B_OFF();
+	if (led & LED_RED2)
+		LED_D_OFF();
+}
+
+
+// Determine if a button is double clicked, single clicked,
+// not clicked, or held down (for ms || 1sec)
+// In general, don't use this function unless you expect a
+// double click, otherwise it will waste 500ms -- use BUTTON_HELD instead
+int BUTTON_CLICKED(int ms)
+{
+	// Up to 500ms in between clicks to mean a double click
+	int ticks = (48000 * (ms ? ms : 1000)) >> 10;
+
+	// If we're not even pressed, forget about it!
+	if (!BUTTON_PRESS())
+		return BUTTON_NO_CLICK;
+
+	// Borrow a PWM unit for my real-time clock
+	AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
+	// 48 MHz / 1024 gives 46.875 kHz
+	AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
+	AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
+	AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
+
+	uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
+
+	int letoff = 0;
+	for(;;)
+	{
+		uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
+
+		// We haven't let off the button yet
+		if (!letoff)
+		{
+			// We just let it off!
+			if (!BUTTON_PRESS())
+			{
+				letoff = 1;
+
+				// reset our timer for 500ms
+				start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
+				ticks = (48000 * (500)) >> 10;
+			}
+
+			// Still haven't let it off
+			else
+				// Have we held down a full second?
+				if (now == (uint16_t)(start + ticks))
+					return BUTTON_HOLD;
+		}
+
+		// We already let off, did we click again?
+		else
+			// Sweet, double click!
+			if (BUTTON_PRESS())
+				return BUTTON_DOUBLE_CLICK;
+
+			// Have we ran out of time to double click?
+			else
+				if (now == (uint16_t)(start + ticks))
+					// At least we did a single click
+					return BUTTON_SINGLE_CLICK;
+
+		WDT_HIT();
+	}
+
+	// We should never get here
+	return BUTTON_ERROR;
+}
+
+// Determine if a button is held down
+int BUTTON_HELD(int ms)
+{
+	// If button is held for one second
+	int ticks = (48000 * (ms ? ms : 1000)) >> 10;
+
+	// If we're not even pressed, forget about it!
+	if (!BUTTON_PRESS())
+		return BUTTON_NO_CLICK;
+
+	// Borrow a PWM unit for my real-time clock
+	AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
+	// 48 MHz / 1024 gives 46.875 kHz
+	AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
+	AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
+	AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
+
+	uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
+
+	for(;;)
+	{
+		uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
+
+		// As soon as our button let go, we didn't hold long enough
+		if (!BUTTON_PRESS())
+			return BUTTON_SINGLE_CLICK;
+
+		// Have we waited the full second?
+		else
+			if (now == (uint16_t)(start + ticks))
+				return BUTTON_HOLD;
+
+		WDT_HIT();
+	}
+
+	// We should never get here
+	return BUTTON_ERROR;
+}
+
+// attempt at high resolution microsecond timer
+// beware: timer counts in 21.3uS increments (1024/48Mhz)
+void SpinDelayUs(int us)
+{
+	int ticks = (48*us) >> 10;
+
+	// Borrow a PWM unit for my real-time clock
+	AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
+	// 48 MHz / 1024 gives 46.875 kHz
+	AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
+	AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
+	AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
+
+	uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
+
+	for(;;) {
+		uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
+		if (now == (uint16_t)(start + ticks))
+			return;
+
+		WDT_HIT();
+	}
+}
+
+void SpinDelay(int ms)
+{
+  // convert to uS and call microsecond delay function
+	SpinDelayUs(ms*1000);
+}
+
+/* Similar to FpgaGatherVersion this formats stored version information
+ * into a string representation. It takes a pointer to the struct version_information,
+ * verifies the magic properties, then stores a formatted string, prefixed by
+ * prefix in dst.
+ */
+void FormatVersionInformation(char *dst, int len, const char *prefix, void *version_information)
+{
+	struct version_information *v = (struct version_information*)version_information;
+	dst[0] = 0;
+	strncat(dst, prefix, len);
+	if(v->magic != VERSION_INFORMATION_MAGIC) {
+		strncat(dst, "Missing/Invalid version information", len);
+		return;
+	}
+	if(v->versionversion != 1) {
+		strncat(dst, "Version information not understood", len);
+		return;
+	}
+	if(!v->present) {
+		strncat(dst, "Version information not available", len);
+		return;
+	}
+
+	strncat(dst, v->svnversion, len);
+	if(v->clean == 0) {
+		strncat(dst, "-unclean", len);
+	} else if(v->clean == 2) {
+		strncat(dst, "-suspect", len);
+	}
+
+	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;
+}
+
+