单片机定时器0方式3编程实验程序 -

标题: 单片机定时器0方式3编程实验程序 [打印本页]

作者: daniu 时间: 2014-12-24 16:40
标题: 单片机定时器0方式3编程实验程序
#include<reg52.h>
#define uchar unsigned char
#define uint  unsigned int
sbit SPK=P1^5;
unsigned char frq;
void DelayUs2x(unsigned char t);
void DelayMs(unsigned char t);
sbit led1=P1^0;
sbit led2=P1^1;
uint num1,num2;
unsigned int i;
void main()
{
TMOD=0x03;
TH0=6;
TL0=6;
EA=1;
ET0=1;
ET1=1;
TR0=1;
TR1=1;
while(1)
{
if(num1>=3686)
{
num1=0;
led1=~led1;
}
if(num2>=1843)
{
num2=0;
led2=~led2;
for(i=0;i<200;i++)
   {
   DelayUs2x(120);
SPK=!SPK;
}
SPK=0;
for(i=0;i<120;i++)
   {
   DelayMs(1);
}
}
}
}
void TL0_time()interrupt 1
{
  TL0=6;
  num1++;
  }
void THO_time()interrupt 3
{
TH0=6;
num2++;
}
void DelayUs2x(unsigned char t)
{
while(--t);
}
void DelayMs(unsigned char t)
{

while(t--)
{

   DelayUs2x(245);
  DelayUs2x(245);
}
}

欢迎光临 (http://www.51hei.com/bbs/)