ds12887.c

万年历

#include<reg52.h>
#include<all.h>
#define uchar unsigned char
#define uint unsigned int

/*定义DS12CR887数据线--------------------------------------------------------*/
//sbit DS_CS = P3^4;	//片选 直接接地
sbit DS_AS = P3^5;//地址选通
sbit DS_RW = P3^6;
sbit DS_DS = P3^7;
#define Ds_Bus P0  //DS12CR887数据总线 

//uchar p[7]=0x00;	    //定义时间数组为全局变量


/*DS12CR887驱动程序----------------------------------------------------------*/

//往DS12CR887写数据函数
void ds_write(uchar add,uchar date)	 
{
	DS_RW=0;	//	  写地址
	DS_AS=1;
	Ds_Bus=add;
	DS_AS=0;

	DS_DS=1;		
	Ds_Bus=date;	 //写数据，数据由RW上升沿锁存
	DS_DS=0;		 //DS下降沿锁存数据
	
}

													    
//读取DS12CR887的数据
uchar ds_read(uchar add)
{	 uchar z;

	
	DS_RW=0;	//	  写地址
	DS_AS=1;
	Ds_Bus=add;
	DS_AS=0;

	DS_RW=1;	  	//读数据	
	DS_DS=1;
	Ds_Bus=0xff;
	z=Ds_Bus;
	DS_DS=0;
	return z;
}



//DS12CR887初始化
void ds_int()
{
	 uchar i;
	 	i=ds_read(0x0d);
	ds_write(0x0a,0x70);
	ds_write(0x0b,0xa2);	//DS12CR887寄存器A功能设置，开启时钟振荡器
	
	ds_write(0x0b,0x06);
	ds_write(0x0a,0x20);
   i=ds_read(0x0c);		  //读c后，c清零
}

/****************************/
//日期和星期显示
/***************************/
void day_time_display()
{  	 uchar p[7]={0,0,0,0,0,0,0};
	p[0]=ds_read(0x00);
	p[1]=ds_read(0x02);
	p[2]=ds_read(0x04);
	p[3]=ds_read(0x06);
	p[4]=ds_read(0x07);
	p[5]=ds_read(0x08);
	p[6]=ds_read(0x09);
	
	LCD_write_shu(0,0,2);			//2
	LCD_write_shu(1,0,0);			//0
	LCD_write_shu(2,0,p[6]/10);		//年十位	   
	LCD_write_shu(3,0,p[6]%10);		//年个位
									//			    _____________
	LCD_write_shu(4,0,12);			// /		   |2009/04/02	 |
	LCD_write_shu(5,0,p[5]/10);		//月十位	   | 13:06:25	 |
	LCD_write_shu(6,0,p[5]%10);		//月个位	   |星期四 17.2℃|
	LCD_write_shu(7,0,12);			// /		   |_____________|
	LCD_write_shu(8,0,p[4]/10);		//日十位	  
	LCD_write_shu(9,0,p[4]%10);		//日个位

	LCD_write_hanzi(0,4,11);		//星
	LCD_write_hanzi(1,4,12);		//期
	LCD_write_hanzi(2,4,p[3]);		//×
	  				

											    
	LCD_write_shu(0,2,13);			//写空格，消除干扰	
	LCD_write_shu(1,2,p[2]/10);		//时十位		
	LCD_write_shu(2,2,p[2]%10);		//时个位		
	LCD_write_shu(3,2,10);			//：			 
	LCD_write_shu(4,2,p[1]/10);		//分十位
	LCD_write_shu(5,2,p[1]%10);		//分个位
	LCD_write_shu(6,2,10);			//:
	LCD_write_shu(7,2,p[0]/10);		//秒十位
	LCD_write_shu(8,2,p[0]%10);		//秒个位
	LCD_write_shu(9,2,13);			//写空格，消除干扰
}