51单片机

• 要求
• 资源
• 效果
• main函数

1、使用内部定时器实现时钟效果

工程文件压缩包
链接：https://pan.baidu.com/s/1kKYAxZDYQOPHRHnnZwUT3g
提取码：o9sl

#include 
#include "LCD1602.h"
#include "Timer0.h"

void adjust(unsigned char *time){
	time[0]%=24;
	time[1]%=60;
	time[2]%=60;
}

unsigned char time[]={23,59,50};

void main(){
	LCD_Init();
	Timer0Init();
	LCD_ShowString(1,1,"current time:");
	while(1){
		
	}
}

void Timer0_Routine() interrupt 1	//中断1
{
	static unsigned int T0Count;	//用于计时
	TL0 = 0x66;						//设置定时初值
	TH0 = 0xFC;						//设置定时初值
	T0Count++;
	if(T0Count>=1000)
	{
		T0Count=0;
		time[2]++;					//每秒加1
		time[1]+=time[2]/60;		//每满60s加1
		time[0]+=time[1]/60;		//每满60min加1
		adjust(time);				//溢出调整
		LCD_ShowString(2,3,":");
		LCD_ShowString(2,6,":");
		LCD_ShowNum(2,1,time[0],2);
		LCD_ShowNum(2,4,time[1],2);
		LCD_ShowNum(2,7,time[2],2);
	}
}