8位串行数码管模块__规划原理图及测验程序

完好的源码下载地址：http://www.51hei.com/f/chcxde.rar
/***选用2片595驱动，动态扫描原理显现,需求单片机3路IO口（DIO接 P33 SCK接P32 RCK接P34），上电显现时钟****/
#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//