51单片机C语言开发之花样流水灯程序

#include <reg52.h>

typedef unsigned char uchar;
typedef unsigned int uint; //int是16位的

sbit ADDR0 = P1^0;
sbit ADDR1 = P1^1;
sbit ADDR2 = P1^2;
sbit ADDR3 = P1^3;
sbit ENLED = P1^4;

void main(){
uchar i;
uint j;

ENLED = 0;
ADDR3 = 1;
ADDR2 = 1;
ADDR1 = 1;
ADDR0 = 0;

while(1){
for(i=0; i<=7; i++){
P0 = ~(0x01 << i);
for(j=0; j<20000; j++) ;
}
for(i=6; i>=1; i--){
P0 = ~(0x01 << i);
for(j=0; j<20000; j++) ;
}
}
}