www.pudn.com > LJD2440-II_MON_OK.rar > profile.c

/************************************************************** 
 NAME: profile.c 
 DESC: To measuure the USB download speed, the WDT is used. 
       To measure up to large time, The WDT interrupt is used. 
 HISTORY: 
 MAR.25.2002:purnnamu:   
     S3C2400X profile.c is ported for S3C2410X. 
 **************************************************************/ 
#include "def.h" 
#include "option.h" 
#include "2440addr.h" 
#include "2440lib.h" 
#include "2440slib.h"  
 
#include  
#include  
#include  
#include  
#include  
 
/************************* Timer ********************************/ 
static int intCount; 
 
void __irq IsrWatchdog(void); 
 
void Timer_InitEx(void) 
{ 
	intCount=0;	 
	pISR_WDT_AC97=(U32)IsrWatchdog; 
	ClearPending(BIT_WDT_AC97); 
	rSUBSRCPND=BIT_SUB_WDT; 
	rINTMSK&=~(BIT_WDT_AC97); 
	rINTSUBMSK&=~(BIT_SUB_WDT); 
} 
 
 
void Timer_StartEx(void) 
{ 
	int divider=0; 
	rWTCON=((PCLK/1000000-1)<<8)|(0<<3)|(1<<2);	// 16us 
	rWTDAT=0xffff; 
	rWTCNT=0xffff;    
 
	// 1/16/(65+1),interrupt enable,reset disable,watchdog enable 
	rWTCON=((PCLK/1000000-1)<<8)|(0<<3)|(1<<2)|(0<<0)|(1<<5);    
} 
 
 
 
float Timer_StopEx(void) 
{ 
	int count; 
	rWTCON=((PCLK/1000000-1)<<8); 
	rINTMSK|=BIT_WDT_AC97; 
	rINTSUBMSK|=BIT_SUB_WDT; 
	count=(0xffff-rWTCNT)+(intCount*0xffff); 
	return ((float)count*(16e-6)); 
} 
 
 
void __irq IsrWatchdog(void) 
{ 
	 rINTSUBMSK|=BIT_SUB_WDT; 
	 rSRCPND = BIT_WDT_AC97;	//Clear pending bit 
	 rINTPND = BIT_WDT_AC97; 
	 rINTPND;	//Prevent an double interrupt pending 
	 rSUBSRCPND=BIT_SUB_WDT; 
	 intCount++;   	 
	 rINTSUBMSK&=~BIT_SUB_WDT; 
}