【51单片机按键按下数码管秒增计时并LED亮释放停计时LED熄】2022-11-12

缘由单片机控制数码管及LED灯-嵌入式-CSDN问答

#include "REG52.h"
sbit k1=P3^0;
unsigned char Js=0;//计时
unsigned char code smgduan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07
,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0,64,15,56}; //共阴0~F消隐减号
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,w=0;ZhongDuanSheZhi();while(1){P0=~smgduan[w];//一位静态数码管显示0-F秒增if(k1==0&&++xd==0)if(k==1)if(++w>15)w=0;P1=(k1?255:1);//LED组第一个灯控制按下亮释放熄if(Js==100){Js=0;k=1;}}
}
void ZhongDuan() interrupt 1
{++Js;TH0+=(65536-9216)/256;TL0+=(65536-9216)%256;       
}