timer.c

#include <kernel.h>
#include "timer.h"

// Timer Define
#define T0_COUNT ((volatile unsigned long*)0x10000000) 
#define T0_MODE  ((volatile unsigned long*)0x10000010) 

static int TimerInterruptID = -1;
static u64 TimerInterruptCount = 0;

// Timer Interrupt
int TimerInterrupt(int a)
{
	TimerInterruptCount++;
	*T0_MODE |= (1 << 11);
	return -1;
}
// Timer Init
void TimerInit(void)
{
	*T0_MODE = 0x0000;
	TimerInterruptID = AddIntcHandler(9, TimerInterrupt, 0);
	EnableIntc(9);
	*T0_COUNT = 0;
	*T0_MODE = ( 2 << 0 )+( 1 << 7 )+( 1 << 9 );
	TimerInterruptCount = 0;
}
// Timer Count
u64 Timer(void)
{
	u64 ticks = (*T0_COUNT + (TimerInterruptCount << 16)) * (1000.0F / ( 147456000.0F / 256.0F ));
	return ticks;
}
// Timer End
void TimerEnd(void)
{
	*T0_MODE = 0x0000;
	if (TimerInterruptID >= 0){
		DisableIntc(9);
		RemoveIntcHandler(9, TimerInterruptID);
		TimerInterruptID = -1;
	}
	TimerInterruptCount = 0;
}