www.pudn.com > testusb.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 "2410addr.h" 
#include "2410lib.h" 
#include "2410slib.h"  
 
#include  
#include  
#include  
#include  
#include  
 
/************************* Timer ********************************/ 
static int intCount; 
 
void __irq IsrWatchdog(void); 
 
void Timer_InitEx(void) 
{ 
	intCount=0;	 
	pISR_WDT=(U32)IsrWatchdog; 
	ClearPending(BIT_WDT); 
	rINTMSK&=~(BIT_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; 
	count=(0xffff-rWTCNT)+(intCount*0xffff); 
	return ((float)count*(16e-6)); 
} 
 
 
void __irq IsrWatchdog(void) 
{ 
	ClearPending(BIT_WDT); 
	intCount++;   	 
}