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	 > 嵌入式系統(tǒng) > 設(shè)計(jì)應(yīng)用 > LCD上實(shí)現(xiàn)數(shù)字時(shí)鐘
          
    
          

          

          


	
	
	

          
	
          
		
          
			
          LCD上實(shí)現(xiàn)數(shù)字時(shí)鐘
          
						
          
				作者：
				時(shí)間：2016-11-23
				來(lái)源：網(wǎng)絡(luò)
				
				
				
				
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			這里使用1602液晶實(shí)現(xiàn)數(shù)字時(shí)鐘，這里需要注意的是LCD1602液晶的驅(qū)動(dòng)寫法，可以參考太陽(yáng)人公司出品的datasheet，具體的程序如下：
          #include
          # define uchar unsigned char
          # define uint unsigned int
          sbit rs=P1^0;
          sbit rw=P1^1;
          sbit e=P1^2;
          uchar table[]={0,1,2,3,4,5,6,7,8,9};
          uchar num,shi,fen,miao;
          void delay(uchar dly)
          {
          uint x,y;
          for(x=0;x<=110;x++)
           for(y=0;y
          ;
          }
          void write_com(uchar com)//寫命令
          {
           rs=0;
           P2=com;
           delay(1);
           e=1;
           delay(1);
           e=0;
          }
          void write_data(uchar num)//寫數(shù)據(jù)
          {
           rs=1;
           P2=num;
           delay(1);
           e=1;
           delay(1);
           e=0;
          }
          void init()
          {
           e=0;
           rw=0;
           num=0;
           miao=0;
           fen=0;
           shi=0;
           TMOD=0x01;
           EA=1;
           TR0=1;
           ET0=1;
           write_com(0x38);//初始化命令
           write_com(0x0e);
           write_com(0x06);
           write_com(0x01);
           write_com(0x80);
          }
          void time() interrupt 1
          {
          TH0=(65535-46080)/256;
          TL0=(65535-46080)% 256;
          num++;
          }
          void main()
          {
           init();
           write_com(0x80);
           write_data(table[0]);
           write_com(0x81);
           write_data(table[0]);
           write_com(0x83);
           write_data(table[0]);
           write_com(0x84);
           write_data(table[0]);
           write_com(0x86);
           write_data(table[0]);
           write_com(0x87);
           write_data(table[0]);
           write_com(0x82);
           write_data(:);
           write_com(0x85);
           write_data(:);
           while(1)
           {
           if(num==20)
            {
           miao++;
           num=0; 
          }
           if(miao==60)
            {
           fen++;
           miao=0;
           write_com(0x83);
             write_data(table[fen/10]);
           write_com(0x84);
             write_data(table[fen ]);// % 10 ，神馬情況，% 咋個(gè)寫不進(jìn)去
          }
           if(fen==24)
            {
           shi++;
           fen=0;
           write_com(0x80);
             write_data(table[shi/10]);
           write_com(0x81);
             write_data(table[shi ]);// % 10
          }
           write_com(0x86);
             write_data(table[miao/10]);
           write_com(0x87);
             write_data(table[miao ]);// % 10
          }
          }

          
				
            
                
			
							
          
                
			              
              
            
          
		
          
		
          
		
          
		
          
		
          
			
            
				
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            			            LCD數(shù)字時(shí)
                        
            
          
            
			
          
		
          	
		

	

          
	
	
          
		
          
			
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