CD4094移位总线寄存器驱动程序

//CD4094  20120302 8路基准电压源使用测试
//程序...    
#include<REG51.h>    
#include<intrins.h>    
#define uint  unsigned int    
#define uchar unsigned char    
 
sbit k6=P1^7;
sbit k5=P1^6;
sbit k4=P1^5;
sbit k3=P1^4;
sbit k2=P1^3;
sbit k1=P1^2;
sbit LED_ON=P1^1;
sbit led=P3^7;
sbit A_=P3^3;
sbit B_=P3^4;
sbit C_=P3^5;
sbit DEL=P1^0;


sbit STR  =  P3^2;//定义CD4094各端口;    
sbit DATA =  P3^1;   
sbit CLK  =  P3^0;
uchar tt,tt1,K=0;
uchar KEY();
  
uchar code table[]={0x03,0x9f,0x25,0x0d,0x99,0x49,0x41}; 
   
//code unsigned char C51BOX2[3] _at_ 0x43;    
void Out_4094(uchar data1);//CD4094写数据子函数;    
void Delay(uint a);     //延时子函数;    
         //主程序开始; 
 void timer0(void)  interrupt 1  using  0
{
 TH0 =5000/256;
 TL0 =5000%256;
 if(K==0)
{tt++;
 
 if(K==0&&tt==7){
  {tt=0;LED_ON=~LED_ON;}
 }
  }
  Out_4094(table[K]);
  if(K!=0) 
   LED_ON=0;
   tt1++;
   if(tt1==7){tt1=0;led=~led;}
}   
void main()   
{   
  uchar i,f,g;       //无限循环;
   TMOD=0x01;
 TH0 =5000/256;
 TL0 =5000%256;
 EA=1;
 ET0=1;
 TR0=1;
 A_=0;
 B_=0;
 C_=0;
 DEL=0;    
  while(1)    
  {   
/*for(g=0;g<6;g++)
  {Delay(30000);
    f=table[g];
    Out_4094(f);     //调用显示子函数;    
    Delay(30000);    //延时;    
  }  */

  KEY();
if(K==0){A_=0;B_=0; C_=0; DEL=0  ;}
if(K==1){A_=0;B_=1; C_=1; DEL=0  ;}
if(K==2){A_=1;B_=0; C_=1; DEL=0  ;}
if(K==3){A_=0;B_=0; C_=1; DEL=0  ;}
if(K==4){A_=1;B_=1; C_=0; DEL=0  ;}
if(K==5){A_=0;B_=1; C_=0; DEL=1  ;}
if(K==6){A_=1;B_=0; C_=0; DEL=1  ;}

 
 

}
}   
void Out_4094(uchar data1) //写CD4094子函数;    
{   
  uchar i;       //定义子函数;    
  STR=0;       //保持然来的状态不变;    
  for(i=0;i<8;i++)     //写八位数据进CD4094;    
  {   
   if(data1&0x01)     //判断并发串行数据;    
    {   
   DATA=1;      //发高电平;    
 }   
 else   
 {   
   DATA=0;      //发低电平;    
 }   
    CLK=0;       //形成上升延脉冲;    
 _nop_();   
 _nop_();      //延时;    
 _nop_();   
 CLK=1;   
 data1>>=1;      //数据移位,送下一位数据;    
   }   
   STR=1;       //数据送完;更新显示;    
}   
void Delay(uint a)     //延时子函数;    
{   
  uint b;   
  for(b=0;b<a;b++);   
} 

uchar KEY()
{
if(k1==0)
{
Delay(10);
if(k1==0)
{
K=1;
while(!k1);
}
}  //检测k1;

   if(k2==0)
{
Delay(10);
if(k2==0)
{
K=2;
while(!k2);
}
}  ///////////////////////

if(k3==0)
{
Delay(10);
if(k3==0)
{
K=3;
while(!k3);
}
}
//////////////////////

if(k4==0)
{
Delay(10);
if(k4==0)
{
K=4;
while(!k4);
}
}

///////////////////////
if(k5==0)
{
Delay(10);
if(k5==0)
{
K=5;
while(!k5);
}
}//////////////////////////
if(k6==0)
{
Delay(10);
if(k6==0)
{
K=6;
while(!k6);
}
} ////////////////////////////

return K;
}  

相关文章