Msp430f5529驱动DS1302实现实时时钟功能

/**************************************************
*ds1302
**************************************************/
#define uchar              unsigned char
//位操作
#define        Set_Bit(x,y)            x|=y //拉高
#define        Clr_Bit(x,y)            x&=~y //拉低
#define        Get_Bit(x,y)            x&y //读取

//时间结构体
typedef struct
{
uchar year;    //00-99,前面自己加入20，比如读出13为2013
uchar month;
uchar date;
uchar hour;
uchar min;
uchar sec;
uchar week;
}_calendar_obj;


#define delay_time              0
//DS1302地址定义
#define ds1302_sec_add            0x80        //秒数据地址
#define ds1302_min_add            0x82        //分数据地址
#define ds1302_hr_add            0x84        //时数据地址
#define ds1302_date_add            0x86        //日数据地址
#define ds1302_month_add        0x88        //月数据地址
#define ds1302_day_add            0x8a        //星期数据地址

#define ds1302_year_add            0x8c        //年数据地址
#define ds1302_control_add        0x8e        //控制数据地址
#define ds1302_charger_add        0x90
#define ds1302_clkburst_add        0xbe

//SCLK:P3.3
#define        SCLK_DIR        (P3DIR)
#define        SCLK_OUT        (P3OUT)
#define        SCLK_REN        (P3REN)
#define        SCLK_PIN        (BIT3)

#define        SCLK_UP            (Set_Bit(SCLK_REN,SCLK_PIN))
#define        SCLK_DirOut        (Set_Bit(SCLK_DIR,SCLK_PIN))
#define        SCLK_H            (Set_Bit(SCLK_OUT,SCLK_PIN))
#define        SCLK_L            (Clr_Bit(SCLK_OUT,SCLK_PIN))


//DS_SDA:P6.1
#define        IO_DIR            (P6DIR)
#define        IO_OUT            (P6OUT)
#define        IO_IN            (P6IN)
#define        IO_REN            (P6REN)
#define        IO_PIN            (BIT1)

#define        IO_UP            (Set_Bit(IO_REN,IO_PIN))
#define        IO_DirOut        (Set_Bit(IO_DIR,IO_PIN))
#define        IO_H            (Set_Bit(IO_OUT,IO_PIN))
#define        IO_L            (Clr_Bit(IO_OUT,IO_PIN))