#include "AT89X52.H"
#define uchar unsigned char
#define uint unsigned int
sbit CLK = P3^0;
sbit DAT = P3^1;
sbit CS = P3^2;//sbit a1=P1^1;
void delay(uint t)
{
uint i;
while(t--)
{
for(i=0;i<125;i++){}
}
}
void L_Delay() //CS被清零后,要經過50μs,才送CLK.
{
uchar i;
for ( i=0; i<48; i++ ) ;
}
//
void Write7279( uchar CMD, uchar DTA )
{
Send_Byte( CMD );
Send_Byte( DTA );
}
uchar kbscan(void)
{uchar sccode,j,k=0;
P1=0xf0;
if((P1&0xf0)!=0xf0)
{delay(30);
if((P1&0xf0)!=0xf0)
{sccode=0xfe;
for(j=0;j<4;j++)
{P1=sccode;
if((P1&0xf0)!=0xf0)
{k=~P1;
while((P1&0XF0)!=0XF0);
return (k);
}
else sccode=(sccode<<1)|0x01;
}
}
}
return(0);
}
uchar bian(uchar key)
{switch(key)
{
case 0x00: return 0;break;
case 0x11: return 1;break;
case 0x12: return 2;break;
case 0x14: return 3;break;
case 0x18: return 4;break;
case 0x21: return 5;break;
case 0x22: return 6;break;
case 0x24: return 7;break;
case 0x28: return 8;break;
case 0x41: return 9;break;
case 0x42: return 10;break;
case 0x44: return 11;break;
case 0x48: return 12;break;
case 0x81: return 13;break;
case 0x82: return 14;break;
case 0x84: return 15;break;
case 0x88: return 16;break;
}
}main()
{
uchar m;
while(1)
{
m=bian(kbscan());
if(m>0&m<16){
Write7279( 0xc8,m); }
}
}