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51单片机学习

news 2025/7/2 23:03:02

定时器流水灯

#include <REGX52.H>
#include "Timer0.h"
#include "Key.h"
#include <INTRINS.H>
unsigned char KeyNum,LEDMode;
void main()
{
   P2=0xFE;
   Timer0Init();
   while(1)
   {
       KeyNum=Key();
       if(KeyNum)
           {
               if(KeyNum==1)
               {
                   LEDMode++;
                   if(LEDMode>=2)
                       {
                           LEDMode=0;
                       }
               }

       }

   }
}

void Timer0_Routine() interrupt 1
{
   static unsigned int T0Count;//¾²Ì¬¾Ö²¿±äÁ¿ ±£Ö¤ÍË³öº¯ÊýÊ±Êý¾Ý²»¶ªÊ§È¥
   TL0 = 0x18;
   TH0 = 0xFC;
   T0Count++;
   if(T0Count >= 500)
   {
       T0Count=0;
       if(LEDMode==0)
           P2=_crol_(P2,1);
       if(LEDMode==1)
           P2=_cror_(P2,1);

   }
}

定时器时钟

#include <REGX52.H>
#include "Delay.h"
#include "LCD1602.h"
#include "Timer0.h"

unsigned char Sec;
unsigned char Min;
unsigned char H;
void main()
{
   LCD_Init();
   Timer0Init();
   LCD_ShowString(1,1,"Clock:");
   LCD_ShowString(2,3,":");
   LCD_ShowString(2,6,":");
   while(1)
   {
       LCD_ShowNum(2,7,Sec,2);
       if(Sec == 60)
       {
       Sec = 0;
       }
       LCD_ShowNum(2,4,Min,2);
       if(Min == 60)
       {
       Min = 0;
       }
       LCD_ShowNum(2,1,H,2);
   }
}
void Timer0_Routine() interrupt 1
{
   static unsigned int T0Count;//¾²Ì¬¾Ö²¿±äÁ¿ ±£Ö¤ÍË³öº¯ÊýÊ±Êý¾Ý²»¶ªÊ§È¥
   TL0 = 0x18;
   TH0 = 0xFC;
   T0Count++;
   if(T0Count >= 1000)
   {

       T0Count=0;
       Sec++;
   }
}