ttim55.c.bak

来自「TI OMAP5910(1510)的最简单测试程序,用于 硬件最初的调试,简要」· BAK 代码 · 共 58 行

//test timer 55
#ifndef _TTIM55_C
#define _TTIM55_C
#include <stdio.h>
#include "includes.h"

#include "ttim55.h"

void InitTimer(Uint16 tim_no,Uint32 prd)
{	
	Uint16 old_intm=0,eventId=0;
	IRQ_Configs cfgTTimerIrq={TimerIsr,3};
	if(tim_no>2){
		printf("timer no. %d is invalid\n",tim_no);
		puts("valid timer no.:0/1\n");
		return;
	}
	

 	
		old_intm = IRQ_globalDisable();
		hTTimer = TIMER_open(TIMER_DEV1, TIMER_OPEN_RESET);
		cfgTTimer.tcr =  TIMER_TCR_DEFAULT;
		cfgTTimer.Lth = prd>>16;
		cfgTTimer.Ltl = prd&0xFFFF;
		/* Configure the Timer */
		printf("tim_no=%d ,prd_h=%u,prd_l=%u \n",tim_no,cfgTTimer.Lth,cfgTTimer.Ltl);
		TIMER_config(hTTimer, &cfgTTimer);

		/* Get the Configuration */
		TIMER_getConfig(hTTimer, &cfgTTimer);
		
		eventId = TIMER_getEventId(hTTimer);
		IRQ_clear(eventId);
		IRQ_config(eventId, &cfgTTimerIrq);
    		IRQ_enable(eventId);
    		IRQ_globalRestore(old_intm);
		/* Start the timer */
		
		TIMER_start(hTTimer) ;

}

Uint16 tim_cnt=0,ledtim=0;
void TimerIsr(void)
{
//	printf("timer is running:tick %d\n",tim_cnt);	
	tim_cnt++;
	tim_cnt=tim_cnt&0x7fff;
	if((tim_cnt&0x7f)==0){
		WrGpio(1,ledtim);
		ledtim=ledtim^0x01;
	 }
	 //	IRQ_enable(22);
}

#endif