//CD4094  20120302 8路基準(zhǔn)電壓源使用測試
//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;//定義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寫數(shù)據(jù)子函數(shù);    
void Delay(uint a);     //延時子函數(shù);    
         //主程序開始; 
 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;       //無限循環(huán);
   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);     //調(diào)用顯示子函數(shù);    
    Delay(30000);    //延時;    
  }  */

  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) //寫CD4094子函數(shù);    
{   
  uchar i;       //定義子函數(shù);    
  STR=0;       //保持然來的狀態(tài)不變;    
  for(i=0;i<8;i++)     //寫八位數(shù)據(jù)進(jìn)CD4094;    
  {   
   if(data1&0x01)     //判斷并發(fā)串行數(shù)據(jù);    
    {   
   DATA=1;      //發(fā)高電平;    
 }   
 else   
 {   
   DATA=0;      //發(fā)低電平;    
 }   
    CLK=0;       //形成上升延脈沖;    
 _nop_();   
 _nop_();      //延時;    
 _nop_();   
 CLK=1;   
 data1>>=1;      //數(shù)據(jù)移位,送下一位數(shù)據(jù);    
   }   
   STR=1;       //數(shù)據(jù)送完;更新顯示;    
}   
void Delay(uint a)     //延時子函數(shù);    
{   
  uint b;   
  for(b=0;b<a;b++);   
} 

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

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