【51单片机 用定时器计时，按键控制LED灯亮（按键按下多少秒，亮几个LED灯，按键松开，LED保持）】2022-10-18

缘由51单片机定时器计时问题-编程语言-CSDN问答

#include "REG52.h"
sbit k1=P3^0;
unsigned char Js=0;//计时
void ZhongDuanSheZhi()
{TH0+=(65536-9216)/256;/*定时器赋初值，定时10ms触发中断，自动补偿方式*/TL0+=(65536-9216)%256; TMOD=0X01;//16位定时器/计数器ET0=TR0=1; //启动定时器T0开启定时器。EA=1; //全局中断开关
}
void main()
{unsigned char miao=0,xd=0,den=0,k=0;ZhongDuanSheZhi();while(1){if(k1==0&&++xd==0){if(k==1)if(miao==1)den=miao;else den=den*2+1;else;P1=den;k=0;}if(Js==100){Js=0;k=1;if(++miao>8)miao=0;}}
}
void ZhongDuan() interrupt 1
{++Js;TH0+=(65536-9216)/256;TL0+=(65536-9216)%256;       
}