timer.c

来自「Boot code for ADM5120 with serial consol」· C语言 代码 · 共 59 行

/*****************************************************************************
;
;    Project : ADM5120
;    Creator : Dan Everett
;    File    : timer.c
;    Abstract: 
;
;*****************************************************************************/

#include <ctype.h>
#include <mips4kc.h>
#include <adm5120.h>

static UINT32 timeticks = 0;


/********************/
/* InitTimer:		*/
/********************/
void InitTimer(void)
{
	ADM5120_SW_REG(Timer_int_REG) = SW_TIMER_INT_DISABLE;
	ADM5120_SW_REG(Timer_REG) = SW_TIMER_10MS_TICKS;
	ADM5120_SW_REG(Timer_int_REG) = SW_TIMER_INT_DISABLE | SW_TIMER_INT;
	ADM5120_SW_REG(Timer_REG) = SW_TIMER_10MS_TICKS | SW_TIMER_EN;
	timeticks = 1;
}


/********************/
/* UpTime:			*/
/********************/
UINT32 UpTime(void)
{
	unsigned long status;

	status = ADM5120_SW_REG(Timer_int_REG);

	if (status & SW_TIMER_INT) {
		/* Acknowledge the timer interrupt */
		ADM5120_SW_REG(Timer_int_REG) = status;
		timeticks++;
	}

	return timeticks;
}


void DisableTimer(void)
{
	/* Entire function body was already commented out - DE */

	/*buart_print("\n\rTimer irqdisable..");
	irqDisconnect(INT_LVL_TIMER);
	IrqDisable(INT_LVL_TIMER);*/

	/* return 0; */
}