ds12887_1.h

数字时钟芯片DS12CR887的驱动与LCD1602液晶显示~采用8位数据总线的方式进行读写~

/*--------------------------------------------------------------*/
//File:	DS12887驱动程序
//Date:	08-10-20 ~ 10-23
//Time:	21:20 ~ 16:53
//Source: Web


/*--------------------------------------------------------------*/
#ifndef __DS12887_1_H__ 
#define __DS12887_1_H__ 


/*--------------------------------------------------------------*/
//接口定义
sbit DS_AS	=	P3^0;	//地址选择	
sbit DS_RW	=	P3^1;	//读写选择
sbit DS_DS	=	P3^2;	//数据选择
sbit DS_IRQ	=	P3^3;	//中断，低电平有效,通过读出0x0c来清除信号
sfr  DS_DAT =	0x90;	//8位数据线P1口


/*--------------------------------------------------------------*/
//数据地址定义
#define	DS12887_Second		0x00	//秒
#define	DS12887_Minute		0x02	//分
#define	DS12887_Hour		0x04	//时
#define	DS12887_Week		0x06	//星期
#define	DS12887_Day			0x07	//日
#define	DS12887_Month		0x08	//月
#define	DS12887_Year		0x09	//年

	
/*--------------------------------------------------------------*/
//定义时间类型
typedef struct _SYSTEMTIME_
{
	unsigned  char Second;
	unsigned  char Minute;
	unsigned  char Hour;
	unsigned  char Week;
	unsigned  char Day;
	unsigned  char Month;
	unsigned  char Year;
	unsigned  char DateString[9];
	unsigned  char TimeString[9];
}SYSTEMTIME;


/*--------------------------------------------------------------*/
//函数声明
void DS12887_Init(void);											//DS12887初始化
void DS12887_Write(unsigned char Address, unsigned char Value);		//DS12887指定地址写入数据
unsigned char DS12887_Read(unsigned char Address);					//DS12887指定地址中读出数据	
void DS12887_SetTime(unsigned  char Address, unsigned  char Value);	//设置时间函数
void DS12887_GetTime(SYSTEMTIME *Time);								//读出时间
void DateToStr(SYSTEMTIME *Time);									//日期转化成字符
void TimeToStr(SYSTEMTIME *Time);									//时间转化成字符	


/*--------------------------------------------------------------*/
//DS12887指定地址写入数据
void DS12887_Write(unsigned char Address, unsigned char Value)
{	
	DS_AS = 0;
	DS_DS = 1;
	DS_RW = 1;
	DS_AS = 1;
	DS_DAT= Address; 
	DS_AS = 0;
	DS_RW = 0;
	DS_DAT= Value;
	DS_RW = 1;
	DS_AS = 1;
}


/*--------------------------------------------------------------*/
//DS12887指定地址中读出数据	
unsigned char DS12887_Read(unsigned char Address)
{
	unsigned char DS_RDAT;
	DS_AS = 0;
	DS_DS = 1;
	DS_RW = 1;
	DS_AS = 1;
	DS_DAT= Address;
	DS_AS = 0;
	DS_DS = 0;
	DS_DAT=0xff;
	DS_RDAT = DS_DAT;
	DS_DS = 1;
	DS_AS = 1;
	return (DS_RDAT);
}


/*--------------------------------------------------------------*/
//DS12887初始化
void DS12887_Init(void)
{
	DS12887_Write(0x0a, 0x20);	//启动DS12887
	DS12887_Write(0x0b, 0x86);	//禁止更新，接下来初始化数据，即写入时间，日期等
	DS12887_Write(0x0b, 0x06);	//正常更新，二进制格式，24进制小时
}


/*--------------------------------------------------------------*/
//设置时间函数
void DS12887_SetTime(unsigned  char Address, unsigned  char Value)
{
	DS12887_Write(0x0b, 0x86);	//禁止更新，接下来初始化数据，即写入时间，日期等
	DS12887_Write(Address,Value);
	DS12887_Write(0x0b, 0x06);	//正常更新，二进制格式，24进制小时
}


/*--------------------------------------------------------------*/
//读出时间
void DS12887_GetTime(SYSTEMTIME *Time)
{
	Time->Second = DS12887_Read(DS12887_Second);
	Time->Minute = DS12887_Read(DS12887_Minute);
	Time->Hour   = DS12887_Read(DS12887_Hour  );
	Time->Day    = DS12887_Read(DS12887_Day   );
	Time->Week   = DS12887_Read(DS12887_Week  );
	Time->Month  = DS12887_Read(DS12887_Month );
	Time->Year   = DS12887_Read(DS12887_Year  );
}


/*--------------------------------------------------------------*/
//日期转化成字符
void DateToStr(SYSTEMTIME *Time)
{
	Time->DateString[0] = Time->Year/10 + '0';
	Time->DateString[1] = Time->Year%10 + '0';
	Time->DateString[2] = '-';
	Time->DateString[3] = Time->Month/10 + '0';
	Time->DateString[4] = Time->Month%10 + '0';
	Time->DateString[5] = '-';
	Time->DateString[6] = Time->Day/10 + '0';
	Time->DateString[7] = Time->Day%10 + '0';
	Time->DateString[8] = '\0';
}


/*--------------------------------------------------------------*/
//时间转化成字符
void TimeToStr(SYSTEMTIME *Time)
{
	Time->TimeString[0] = Time->Hour/10 + '0';
	Time->TimeString[1] = Time->Hour%10 + '0';
	Time->TimeString[2] = ':';
	Time->TimeString[3] = Time->Minute/10 + '0';
	Time->TimeString[4] = Time->Minute%10 + '0';
	Time->TimeString[5] = ':';
	Time->TimeString[6] = Time->Second/10 + '0';
	Time->TimeString[7] = Time->Second%10 + '0';
	Time->TimeString[8] = '\0';
}


/*--------------------------------------------------------------*/
#endif