www.pudn.com > at91rm9200bsp.rar > at91systimer.c

 
void	InitSystemTimer() 
{ 
	SYSTIMER_S* pst = (SYSTIMER_S*)SYSTIMER_BASE_ADDR; 
	pst ->ST_CR = ST_CR_WDRST; 
	pst ->ST_PIMR = ( UINT32 )( SLOW_RATE_CLK / DEFAULT_SYS_CLK_RATE ); 
	pst ->ST_WDMR = 0x0; 
	/* 
	 *	real time prescale set to only 1, no prescale 
	 */ 
	pst ->ST_RTMR = ST_RTMT_RT_PRESCALE; 
	pst ->ST_IDR = (ST_IE_DR_ALARMS | ST_IE_DR_PITS | ST_IE_DR_RTTINC | ST_IE_DR_WDOVF ); 
} 
 
void	InitSystemTimer2() 
{ 
	SYSTIMER_S* pst = (SYSTIMER_S*)SYSTIMER_BASE_ADDR; 
	/* 
	 *	enable interrupt of system period timer 
	 */ 
	pst ->ST_IER = ST_IE_DR_PITS; 
}