【51单片机按键闪烁流水灯方向】2022-10-26

缘由流水灯代码，按要求设置-编程语言-CSDN问答

#include "REG52.h"
sbit k1=P3^0;
sbit k2=P3^1;
sbit k3=P3^2;
void main()
{unsigned char l=0,xd=0,ys1=0,ys2=0,z=0,qt=0;P1=l;while(1){if(k1==0&&++xd==0){//自上而下z=0;l=qt=1;while(k1==0);}if(k2==0&&++xd==0){//自下而上qt=z=1;l=128;while(k2==0);}if(k3==0&&++xd==0){//同时闪烁qt=0;while(k3==0);}if(++ys1==0)if(++ys2==222)//延时间隔自行调节{if(qt==0){if(l>0)l=0;else l=255;}else{if(z==0)if(l==0)l=1;else l*=2;else if(l==0)l=128;else l/=2;}P1=l;ys2=0;}}
}