在LCD上实现简易电子钟

矫情吗；* 2022-07-11 11:23 138阅读 0赞

注释：在LCD上实现简易电子钟.功能1：整点报时（到整点时候，LED闪一分钟，蜂鸣器响一分钟）；功能二：按键暂停；功能三：按键重置时间：功能四：按键实现调整时间

#include<reg52.h> //包含头文件，一般情况不需要改动，头文件包含特殊功能寄存器的定义
    #include<intrins.h>
    
    unsigned char sec = 0;
    unsigned char min = 0;
    unsigned char hour = 0;
    unsigned char count = 0;
    unsigned char flag = 0;
    
    sbit RS = P2^4;   //定义端口 
    sbit RW = P2^5;
    sbit EN = P2^6;
    sbit key1 = P1^0;
    sbit key2 = P1^1;
    sbit key3 = P1^2;
    sbit key4 = P1^3;
    sbit key5 = P1^4;
    sbit key6 = P1^5;
    sbit key7 = P1^6;
    sbit key8 = P1^7;
    sbit buzz = P2^2;
    
    #define RS_CLR RS=0 
    #define RS_SET RS=1
    
    #define RW_CLR RW=0 
    #define RW_SET RW=1 
    
    #define EN_CLR EN=0
    #define EN_SET EN=1
    
    #define DataPort P0
    /*------------------------------------------------
     uS延时函数，含有输入参数 unsigned char t，无返回值
     unsigned char 是定义无符号字符变量，其值的范围是
     0~255 这里使用晶振12M，精确延时请使用汇编,大致延时
     长度如下 T=tx2+5 uS 
    ------------------------------------------------*/
    void DelayUs2x(unsigned char t)
    {   
     while(--t);
    }
    /*------------------------------------------------
     mS延时函数，含有输入参数 unsigned char t，无返回值
     unsigned char 是定义无符号字符变量，其值的范围是
     0~255 这里使用晶振12M，精确延时请使用汇编
    ------------------------------------------------*/
    void DelayMs(unsigned char t)
    {
         
     while(t--)
     {
         //大致延时1mS
         DelayUs2x(245);
    	 DelayUs2x(245);
     }
    }
    /*------------------------------------------------
                  判忙函数
    ------------------------------------------------*/
     bit LCD_Check_Busy(void) 
     { 
     DataPort= 0xFF; 
     RS_CLR; 
     RW_SET; 
     EN_CLR; 
     _nop_(); 
     EN_SET;
     return (bit)(DataPort & 0x80);
     }
    
     /*---------------------------------------------------
     					按键控制						
    --------------------------------------------------*/
    
    void push_button()
    {
    	if(!key5)
    	{
    		DelayMs(10);
    		
    		if(!key5)
    		{
    			while(!key5);
    			EA = 0;
    		}
    	}
    
    	
    	if(!key1)	//1
    	{
    		DelayMs(10);
    		
    		if(!key1)
    		{
    			while(!key1);
    			sec++;
    			if(sec == 60)
    			{
    				sec = 0;
    				min++;
    			}
    		}
    																																										   	
    	}
    			
    	if(!key2) //2
    	{
    		DelayMs(10);
    		
    		if(!key2)
    		{
    			while(!key2);
    			sec--;
    			if(sec == 255)
    			{
    				sec = 59;
    				min--;
    			}
    		}
    			
    	}
    		
    	if (!key3)//3
    	{
    		DelayMs(10);
    		
    		if(!key3)
    		{
    			while(!key3);
    			min++;
    
    			if(min == 60)
    			{
    				min = 0;
    				hour++;
    			}
    		}
    			
    	}
    
    	if(!key4)//4
    	{
    		DelayMs(10);
    		
    		if(!key4)
    		{
    			while(!key4);
    			min--;
    
    			if(min == 255)
    			{
    				min = 59;
    				if((hour-1) == 255)
    				{
    					hour = 23;
    				}
    
    			}
    		}
    	}
    
    	if(!key7) //7
    	{
    
    		EA = 1;
    			
    	}
    
    	if(!key6)//6
    	{
    		sec = 0;
    		min = 0;
    		hour = 0;
    
    		EA = 1;
    	}
    	
    	if(!key8)//8
    	{
    		DelayMs(10);
    		
    		if(!key8)
    		{
    			while(!key8);
    			hour++;
    
    			if(hour == 24)
    			{
    				hour = 0;
    			}
    		}
    	}
    
    }
    
    /*------------------------------------------------
                  写入命令函数
    ------------------------------------------------*/
     void LCD_Write_Com(unsigned char com) 
     {  
    // while(LCD_Check_Busy()); //忙则等待
     DelayMs(5);
     RS_CLR; 
     RW_CLR; 
     EN_SET; 
     DataPort= com; 
     _nop_(); 
     EN_CLR;
     }
    /*------------------------------------------------
                  写入数据函数
    ------------------------------------------------*/
     void LCD_Write_Data(unsigned char Data) 
     { 
     //while(LCD_Check_Busy()); //忙则等待
     DelayMs(5);
     RS_SET; 
     RW_CLR; 
     EN_SET; 
     DataPort= Data; 
     _nop_();
     EN_CLR;
     }
    
    /*------------------------------------------------
                    清屏函数
    ------------------------------------------------*/
     void LCD_Clear(void) 
     { 
     LCD_Write_Com(0x01); 
     DelayMs(5);
     }
    /*------------------------------------------------
                  写入字符串函数
    ------------------------------------------------*/
     void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s) 
     {     
     if (y == 0) 
     	{     
    	 LCD_Write_Com(0x80 + x);     
     	}
     else 
     	{     
     	LCD_Write_Com(0xC0 + x);     
     	}        
     while (*s) 
     	{     
     LCD_Write_Data( *s);     
     s ++;     
     	}
     }
    /*------------------------------------------------
                  写入字符函数
    ------------------------------------------------*/
     void LCD_Write_Char(unsigned char x,unsigned char y,unsigned char Data) 
     {     
     if (y == 0) 
     	{     
     	LCD_Write_Com(0x80 + x);     
     	}    
     else 
     	{     
     	LCD_Write_Com(0xC0 + x);     
     	}        
     LCD_Write_Data( Data);  
     }
    /*------------------------------------------------
                  初始化函数
    ------------------------------------------------*/
     void LCD_Init(void) 
     {
       LCD_Write_Com(0x38);    /*显示模式设置*/ 
       DelayMs(5); 
       LCD_Write_Com(0x38); 
       DelayMs(5); 
       LCD_Write_Com(0x38); 
       DelayMs(5); 
       LCD_Write_Com(0x38);  
       LCD_Write_Com(0x08);    /*显示关闭*/ 
       LCD_Write_Com(0x01);    /*显示清屏*/ 
       LCD_Write_Com(0x06);    /*显示光标移动设置*/ 
       DelayMs(5); 
       LCD_Write_Com(0x0C);    /*显示开及光标设置*/
       }
     
    
    /*------------------------------------------------
                        主函数
    ------------------------------------------------*/ 
    
    
    void main(void) 
    { 
    //unsigned char i; 
    //unsigned char *p; 
    
    LCD_Init();
    
    TMOD = 0x01;	
    TL0 = 0xb0;
    TH0 = 0x3c;
    
    EA = 1;
    ET0 = 1;
    TR0 = 1;
    
    
    
    
     while(1)
     {
     	LCD_Write_Char(7,0,0X30 + sec%10);
    	LCD_Write_Char(6,0,0X30 + sec/10);
    
    	LCD_Write_Char(5,0,0x3a);
    	
    	LCD_Write_Char(4,0,0X30 + min%10);
    	LCD_Write_Char(3,0,0X30 + min/10);
    	
    	LCD_Write_Char(2,0,0x3a);
    	
    	LCD_Write_Char(1,0,0X30 + hour%10);
    	LCD_Write_Char(0,0,0X30 + hour/10);
    	push_button();
    
    		
     }
    }
    
    void time0_isr(void) interrupt 1
    {
    	count++;
    	EA = 0;
    
    	TH0 = 0x3C;
    	TL0 = 0xb0;
    	
     	if(count == 20)
    	{
    		count = 0;
    		sec++;
    		
    		if(sec == 60)//用于显示0~9
    		{
    			sec = 0;
    			min++;
    			flag = 0;
    		}
    			
    		if(min == 60)
    		{
    			min = 0;
    			hour++;
    			flag = 1;
    		}
    
    		if(hour == 24)
    		{
    			hour = 0;
    		}
    
    	}
    	EA = 1;
    	
    	if(flag)
    	{	buzz = ~buzz;
    		P3 = 0x00;
    		DelayMs(10);
    		P3 = 0xff;
    		DelayMs(10);
    	}	
    	
    
    
    }