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/***采用2片595驅(qū)動(dòng)，動(dòng)態(tài)掃描原理顯示,需要單片機(jī)3路IO口（DIO接 P33 SCK接P32 RCK接P34），上電顯示時(shí)鐘****/
#include <AT89X51.H>
unsigned int tcount;
unsigned char m;
static unsigned char second,minute,hour;
unsigned char code fseg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
unsigned char code segbit[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};
unsigned char disbuf[8]={0,0,0,0,0,0,0,0};
//數(shù)據(jù)傳輸//
void sdata(void)
{unsigned char b,c,num;
if(b==0)
{
b++;
num=segbit[m];
for(c=0;c<8;c++)
{P3_2=0;
P3_3=num&0x80;
num<<=1;
P3_2=1;
}
}
if(b==1)
{
b--;
if(m==2||m==5)
{num=0xbf;}
else
{num=fseg[disbuf[m]];}
for(c=0;c<8;c++)
{ P3_2=0;
P3_3=num&0x80;
num<<=1;
P3_2=1;
}
}
m++;
if(m==8)
{m=0;
}
}
//數(shù)據(jù)傳輸//
//延時(shí)0.1ms個(gè)單位//
void delay (unsigned char h)
{ while(h--);
}
//延時(shí)0.1ms個(gè)單位//
//數(shù)據(jù)輸出//
void out(void)
{P3_4=0;
delay(50);
P3_4=1;
}
//數(shù)據(jù)輸出//
//按鍵控制//
void bcon(void)
{if(P3_5==0)
{delay(100);
if(P3_5==0)
{second=0;
while(P3_5==0);
}
}
disbuf[0]=second%10;
disbuf[1]=second/10;
if(P3_6==0)
{delay(100);
if(P3_6==0)
{minute++;
while(P3_6==0);
if(minute==60)
{minute=0;
}
}
}
disbuf[3]=minute%10;
disbuf[4]=minute/10;
if(P3_7==0)
{delay(100);
if(P3_7==0)
{hour++;
while(P3_7==0);
if(hour==24)
{hour=0;
}
}
}
disbuf[6]=hour%10;
disbuf[7]=hour/10;
disbuf[0]=second%10;
disbuf[1]=second/10;
disbuf[3]=minute%10;
disbuf[4]=minute/10;
disbuf[6]=hour%10;
disbuf[7]=hour/10;
}
//鍵盤(pán)控制//
//主函數(shù)//
void main(void)
{
TMOD=0x02;
TH0=0x06;
TL0=0x06;
TR0=1;
ET0=1;
EA=1;
while(1)
{
bcon();
sdata();
out();
}
while(1);
}
//主函數(shù)//
//中斷程序//
void t0(void) interrupt 1 using 0
{ tcount++;
if(tcount==4000)
{tcount=0;
second++;
if(second==60)
{second=0;
minute++;
if(minute==60)
{minute=0;
hour++;
if(hour==24)
{hour=0;
}
}
}
}
}
//中斷程序//