断电保护

#include<reg52.h>
#define uchar unsigned char #define uint unsigned int uchar code LEDData[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71,0,0 };
uint a;
uchar flag1,n;
char disnum;
sbit alarm1=P3^4;
sbit alarm2=P3^3;
sbit OE=P2^1;
sbit EOC=P3^2;
sbit ST=P2^0;
sbit CLK=P2^3;
sbit wei1=P2^4;
sbit wei2=P2^5;
sbit wei3=P2^6;
sbit wei4=P2^7;
sbit key1=P3^7;
sbit key2=P3^5;
sbit key3=P3^6;
void Delayms(uint ms)
{
uchar i;
while(ms--)
for(i=0;i<120;i++);
}
void Display2(uint d)
{
wei1=1;
wei2=1;
wei3=0;
wei4=1;
P1=LEDData[d/10];
Delayms(2);
wei3=1;
wei4=0;
P1=LEDData[d%10];
Delayms(2);
}
void Display1(uint d)
{
wei4=1;
wei3=1;
wei2=1;
wei1=0;
P1=LEDData[d/10];
Delayms(2);
wei1=1;
wei2=0;
P1=LEDData[d%10];
Delayms(2);
}
void Display3()
{
wei4=1;
wei3=1;
wei2=1;
wei1=0;
P1=LEDData[17];
Delayms(2);
wei1=1;
wei2=0;
P1=LEDData[17];
Delayms(2);
}
void keyscan(void) {
if(key1==0)
{
Delayms(2);
if(key1==0)
{
n++;
flag1=1;
if(n==2)
{
flag1=0;
n=0;
}
}
while(!key1);
}
if(flag1==1)
{
if(key2==0)
{
Delayms(2);
if(key2==0)
{
disnum++;
//Display1(disnum);
if(disnum==20)
disnum=0;
}
while(!key2);
}
if(key3==0)
{
Delayms(2);
if(key3==0)
{
//flag1=0;
disnum--;
//Display1(disnum);
if(disnum<0)
disnum=20;
}
while(!key3);
}
}
}
void init(void)
{
TMOD=0x02;
TH0=0x14;
TL0=0x00;
IE=0x82;
TR0=1;
disnum=0;
}
uchar dispose(uchar d)
{
d=d/10; //电力转换成两位数显示
return(d);
}
void ADC_divert()
{
ST=0;
Delayms(5);
ST=1;
Delayms(5);
ST=0; //启动转换
while(EOC==0); //等待转换结果
OE=1; //允许输出
a=P0;
a=dispose(a);
OE=0;
}
void main()
{
init();
while(1)
{
keyscan();
while(flag1==1)
{
uchar i;
keyscan();
for(i=0;i<60;i++)
{
Display3();
Display3();
Display3();
Display3();
Display2(a); //显示A/D转换结果
}
Delayms(20);
for(i=0;i<60;i++)
{
Display1(disnum);
Display1(disnum);
Display1(disnum);
Display1(disnum);
Display2(a); //显示A/D转换结果
}
}
Display1(disnum);
ADC_divert();
Display2(a); //显示A/D转换结果
if(disnum==a)
{
alarm1=0;
alarm2=0;
}
else
{
alarm1=1;
alarm2=1;
}
}
}
void Timer0_INT() interrupt 1 //T0定时器中断给ADC0809提供时钟信号
{
CLK=!CLK;
//ADC0809时钟信号
}。