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#include "reg51.h"
#define char unsigned char
char code dis_7[12]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0xb2,0xf8,0x80,0x90,0xff,0xbf};
char code scan_con[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
char data dis[8]={0x00,0x00,0x0b,0x00,0x00,0x0b,0x00,0x00};
char data timedata[3]={0x00,0x00,0x00};
char data ms50=0x00,con=0x00,con1=0x00,con2=0x00;
sbit key0=P1^0;
sbit key1=P1^1;
sbit key2=P1^2;
void delay1ms(int t)
{
int i,j;
for(i=0;i<t;i++)
for(j=0;j<120;j++)
;
}
void keyscan()
{
EA=0;
if(key0==0)
{
delay1ms(10);
while(key0==0)
con++;
TR0=0;
ET0=0;
if(con>=3)
{
con=0;
TR0=1;
ET0=1;
}
}
if(con!=0)
{
if(key1==0)
{
delay1ms(10);
while(key1==0)
timedata[con]++;
if(con==2)
con1=24;
else
con1=60;
if(timedata[con]>=con1)
{
timedata[con]=0;
}
}
}
if(con!=0)
{
if(key2==0)
{
delay1ms(10);
while(key2==0)
timedata[con]--;
if(con==2)
con2=23;
else
con2=59;
if(timedata[con]<=0)
{
timedata[con]=con2;
}
}
}
EA=1;
}
void scan()
{
char k;
dis[0]=timedata[0]%10;
dis[1]=timedata[0]/10;
dis[3]=timedata[1]%10;
dis[4]=timedata[1]/10;
dis[6]=timedata[2]%10;
dis[7]=timedata[2]/10;
for(k=0;k<8;k++)
{
P0=dis_7[dis[k]];
P2=scan_con[k];
delay1ms(1);
P2=0xff;
}
}
main()
{
TH0=0x3c;TL0=0xb0;
TMOD=0x01;ET0=1;
TR0=1;EA=1;
while(1)
{
scan();
keyscan();
}
}
void time_intt0(void) interrupt 0
{
ET0=0;TR0=0;
TH0=0x3c;TL0=0xb0;
TR0=1;
ms50++;
if(ms50==20)
{
ms50=0x00;
timedata[0]++;
if(timedata[0]==60)
{
timedata[0]=0;
timedata[1]++;
if(timedata[1]==60)
{
timedata[1]=0;
timedata[2]++;
if(timedata[2]==24)
{
timedata[2]=0;
}
}
}
}
ET0=1;
}
為什么不能顯示結(jié)果
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