8位串行数码管模块__设计原理图及测试程序

完整的源码下载地址：http://www.51hei.com/f/chcxde.rar
/***采用2片595驱动，动态扫描原理显示,需要单片机3路IO口（DIO接 P33 SCK接P32 RCK接P34），上电显示时钟****/
#include
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};

//数据传输//
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;
}
}
//数据传输//

//延时0.1ms个单位//

void delay (unsigned char h)
{ while(h--);
}
//延时0.1ms个单位//

//数据输出//
void out(void)
{P3_4=0;
delay(50);
P3_4=1;
}
//数据输出//

//按键控制//
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;

}
//键盘控制//
//主函数//

void main(void)
{
TMOD=0x02;
TH0=0x06;
TL0=0x06;
TR0=1;
ET0=1;
EA=1;

while(1)
{
bcon();
sdata();
out();

}
while(1);

}
//主函数//

//中断程序//

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;
}
}
}
}
}

//中断程序//