2024/3/14 定时器时钟

感觉和之前自己写的那个差不太多，只是用了定时器。贴一下代码.

main.c

#include <REGX52.H>
#include "LCD1602.h"
#include "Delay.h"
#include "Timer0.h"
unsigned char Sec=59,Min=49,Hour=17;

void main()
{
	LCD_Init();
	Timer0Init();
	
	LCD_ShowString(1,1,"Clock");
	LCD_ShowString(2,3,":");
	LCD_ShowString(2,6,":");
	
      while(1)
      {
					LCD_ShowNum(2,1,Hour,2);
					LCD_ShowNum(2,4,Min,2);
					LCD_ShowNum(2,7,Sec,2);
      }

}
void Timer0_Routine() interrupt 1
{
	static unsigned int T0Count;
	TL0 = 0x18;		//设置定时初值
	TH0 = 0xFC;		//设置定时初值
	T0Count++;
	if(T0Count>=1000)
	{
		T0Count=0;
		Sec++;
		if(Sec>=60)
		{
			Sec=0;
			Min++;
			if(Min>=60)
			{
					Min=0;
					Hour++;
					if(Hour>=24)
					{
						Hour=0;
					}
			}
		}
		}
}

timer0.c

#include <REGX52.H>

/**
  * @brief  定时器0初始化，1毫秒@12.000MHz
  * @param  无
  * @retval 无
  */
void Timer0Init(void)
{
	TMOD &= 0xF0;		//设置定时器模式
	TMOD |= 0x01;		//设置定时器模式
	TL0 = 0x18;		//设置定时初值
	TH0 = 0xFC;		//设置定时初值
	TF0 = 0;		//清除TF0标志
	TR0 = 1;		//定时器0开始计时
	ET0=1;
	EA=1;
	PT0=0;
}

/*定时器中断函数模板
void Timer0_Routine() interrupt 1
{
	static unsigned int T0Count;
	TL0 = 0x18;		//设置定时初值
	TH0 = 0xFC;		//设置定时初值
	T0Count++;
	if(T0Count>=1000)
	{
		T0Count=0;
		
	}
}
*/

 timer0.h

#ifndef __TIMER0_H__
#define __TIMER0_H__

void Timer0Init(void);

#endif