8位串行数码管模块__设计原理图及测试程序

2015-06-25 来源：51hei

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;