0--f.c

本文件包含了使用C语言编写单片机的各种入门程序

#include<reg51.h>
sbit sda=P0^2;
sbit scl=P0^3;
code char led[16]={0x11,0xd7,
0x32,0x92,0xd4,0x98,0x18,0xd3,
0x10,0x90,0x50,0x1c,0x39,0x16,
0x38,0x78};

void delay(int i)
{
int t;
for(;i>0;i--)
for(t=0;t<400;t++);
}

shift(char t)
{
char k,led1=led[t];
for(k=0;k<8;k++)
{
scl=0;
if(led1&0x80)sda=1;
else sda=0;
scl=1;
scl=0;
sda=0;
led1=led1<<1;
}
}

void main()
{
char j,n;
delay(100);

shift(0); 
shift(0);
delay(400);

for(n=0;n<16;n++)
{
j=j+1;
shift(j);
shift(j);
delay(400);
}
}