【51单片机4按键启动停止向上向下流水灯】2022-10-26

缘由一键控流水灯咋实现？-嵌入式-CSDN问答

#include "REG52.h"
sbit k1=P3^0;
sbit k2=P3^1;
sbit k3=P3^2;
sbit k4=P3^3;//端口定义自行修改
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;while(k1==0);}if(k2==0&&++xd==0){//自下而上z=1;while(k2==0);}if(k3==0&&++xd==0){//启动if(qt==0){z=qt=1;l=128;}else;while(k3==0);}if(k4==0&&++xd==0){//停止qt=0;while(k4==0);}if(qt==1)if(++ys1==0)if(++ys2==0){if(z==0)if(l==0)l=1;else l*=2;else if(l==0)l=128;else l/=2;P1=l;//端口自行修改}}
}