30-14.c

C51程序应用例子,自己的学习历程,希望可以帮到大家

#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long
#include<reg52.h>

sbit P10=P1^0;
sbit K1=P3^2;

uchar scale;

void main(void)
{
uint n;

RCAP2H=0xF3;
RCAP2L=0x98;
TR2=1;
ET2=1;
EA=1;
while(1)
{
;
for(n=0;n<50000;n++);
scale++;
if(scale==10)scale=0;
}
}

timer2() interrupt 5
{
static uchar tt;
TF2=0;
tt++;
if(tt==10)
{
tt=0;
if(scale!=0)
P10=0;
}
if(scale==tt)
P10=1;
}