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#include<reg52.h>
sbit sda = P0^1;
sbit sck = P0^2;
sbit scp = P0^0;
char chuoi_ht[]= {
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0X81,0X7E,0X7E,0X7E,0XBD,0XFF, //C
0X00,0X7E,0X7E,0X7E,0X81,0XFF, //D
0X00,0XBF,0XDF,0XEF,0X00,0XFF, //N
0XFF,0XFF,
0X00,0XEF,0XEF,0XEF,0X00,0XFF, //H
0XC0,0XAF,0X6F,0XAF,0XC0,0XFF, //A
0X7E,0X00,0X7E,0XFF, //I
0XFF,0XFF,
0X00,0X7E,0X7E,0X7E,0X81,0XFF, //D
0X01,0XFE,0XFE,0XFE,0X01,0XFF, //U
0X81,0X7E,0X7E,0X7E,0X81,0XFF, //O
0X00,0XBF,0XDF,0XEF,0X00,0XFF, //N
0X81,0X7E,0X7E,0X76,0XB1,0XF7, //G
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};//
void delay(void) //Ham delay giu tre
{
char i;
for(i=0;i<=50;i++);
}
void xoayvong(void) //Hàm xoay vòng du liêu ra
{
char iswap = 0; //Bien dieu khien xoay vong
char iswc = 0; //Bien dem so lan xoay vong
char ipeed = 7; //Bien so dieu khien chay chu
while(1)
{
sda = 1; //Tao xung 1
sck = 1;
sck = 0; //chot xung ra
sda = 0; //Tao xung 0
for(iswap=0;iswap<=7;iswap++)
{
scp = 1;
scp = 0;//xuat xung ra ngoai
if((ipeed>=7)&&(ipeed<=80))
P1 = chuoi_ht[ipeed-iswap];
delay(); //giu tre mot khoang thoi gian
P1 = 0xff;
sck = 1;
sck = 0;
}
iswc=iswc+1; //Tang so vong dem
if(iswc==110) //Lap lan thi dich chuoi
{
ipeed = ipeed +1;
iswc=0;
if(ipeed ==80)
ipeed =7;
}
}
}
void main(void)
{
xoayvong();
}
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