定时器0.c

51单片机开发板提供的参考程序

/*copyright 2007,ShangHai  HaoTun Electronic Technology co.,Ltd
 *
 *This sample is used for Timer0 16bit timer mode.
 *
 *write by Shifang 2007-4-26
 *
 *V1.1
 */
#include<reg52.h>


sbit LED=P1^2;


void Init_Timer0(void)
{
 TMOD |= 0x01;			     
 TH0=0x00;	              	/* Init value */
 TL0=0x00;
 EA=1;                      /* interupt enable */
 ET0=1;                     /* enable timer0 interrupt */
 TR0=1;  
}

main()
{
 Init_Timer0();
 while(1);
}

void Timer0_isr(void) interrupt 1 using 1
{
 TH0=0x00;		/* Init value */
 TL0=0x00;

 LED=~LED;//指示灯反相

}