12864液晶顯示實時時鐘

下面是一段12864液晶顯示實時時鐘的程序：

/***************************************************************************************時間：2012.11.30晶振：11.0592MHz芯片：STC89C52RC功能描述：在12864上顯示年、月、日、星期、時、分和秒等時間信息***************************************************************************************/ #include#define uchar unsigned charsbit CLK=P1^4;        //DS1302引腳定義sbit IO=P1^5;sbit CE=P1^6;sbit ACC0=ACC^0;sbit ACC7=ACC^7;sbit RS=P2^4;         //12864引腳定義        數據口為P0sbit RW=P2^5;sbit EN=P2^6;sbit PSB=P2^1;sbit RET=P2^3;void Input_1byte(uchar TD)	//DS1302輸入一字節數據{uchar i;ACC=TD;for(i=8;i>0;i--){IO=ACC0;CLK=1;CLK=0;ACC=ACC>>1;}}uchar Output_1byte(void)       //DS1302輸出一字節數據{uchar i;for(i=8;i>0;i--){ACC=ACC>>1;ACC7=IO;CLK=1;CLK=0;}return(ACC);}void Write_DS1302(uchar add,uchar dat)//向DS1302寫{CE=0;CLK=0;CE=1;Input_1byte(add);Input_1byte(dat);CE=0;}uchar Read_DS1302(uchar add)	//從DS1302讀{uchar inf;	  //信息臨時存儲變量CE=0;CLK=0;CE=1;Input_1byte(add);inf=Output_1byte();CE=0;return(inf);}/**********************DS1302初始化*****************************/void init_1302(){if(Read_DS1302(0xd1)==0x55)               //判斷內存單元的內容，是否進行初始化{        return;  }     else {Write_DS1302(0x8e,0x00); //關閉寫保護Write_DS1302(0x90,0x00); //電池充電設置Write_DS1302(0x80,0x00); //秒Write_DS1302(0x82,0x54); //分Write_DS1302(0x84,0x20); //時Write_DS1302(0x86,0x30); //日Write_DS1302(0x88,0x11); //月Write_DS1302(0x8a,0x05); //星期Write_DS1302(0x8c,0x12); //年Write_DS1302(0xd0,0x55); //寫RAMWrite_DS1302(0x8e,0x80); //打開寫保護  }}/**********************延時函數*****************************/void DelayUs2x(unsigned char t){   while(--t);}void DelayMs(unsigned char t){while(t--){//大致延時1mSDelayUs2x(245);DelayUs2x(245);}}/**********************12864判忙*****************************/void check_busy(){RS=0;RW=1;EN=1;while((P0&0x80)==0x80);EN=0;}				   
				
            

				
					
					
				
			
                
			
							

                
			            

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