DS1302

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#include "ds1302.h"unsigned char time_buf1[8] = {20,10,6,5,12,55,00,6};//空年月日时分秒周unsigned char time_buf[8] ;                         //空年月日时分秒周void Ds1302_Write_Byte(unsigned char addr, unsigned char d){unsigned char i;RST_SET;//写入目标地址：addraddr = addr & 0xFE;     //最低位置零for (i = 0; i < 8; i ++)     { if (addr & 0x01)     {IO_SET;}else     {IO_CLR;}SCK_SET;SCK_CLR;addr = addr >> 1;}//写入数据：dfor (i = 0; i < 8; i ++)    {if (d & 0x01)     {IO_SET;}else     {IO_CLR;}SCK_SET;SCK_CLR;d = d >> 1;}RST_CLR;//停止DS1302总线}unsigned char Ds1302_Read_Byte(unsigned char addr) {unsigned char i;unsigned char temp;RST_SET;//写入目标地址：addraddr = addr | 0x01;//最低位置高for (i = 0; i < 8; i ++)     {     if (addr & 0x01)    {IO_SET;}else     {IO_CLR;}SCK_SET;SCK_CLR;addr = addr >> 1;}//输出数据：tempfor (i = 0; i < 8; i ++)     {temp = temp >> 1;if (IO_R)    {temp |= 0x80;}else    {temp &= 0x7F;}SCK_SET;SCK_CLR;}RST_CLR;//停止DS1302总线return temp;}void Ds1302_Write_Time(void) {         unsigned char i,tmp;for(i=0;i<8;i++)    {                  //BCD处理tmp=time_buf1[i]/10;time_buf[i]=time_buf1[i]%10;time_buf[i]=time_buf[i]+tmp*16;    }Ds1302_Write_Byte(ds1302_control_add,0x00);//关闭写保护 Ds1302_Write_Byte(ds1302_sec_add,0x80);//暂停 //Ds1302_Write_Byte(ds1302_charger_add,0xa9);//涓流充电 Ds1302_Write_Byte(ds1302_year_add,time_buf[1]);//年 Ds1302_Write_Byte(ds1302_month_add,time_buf[2]);//月 Ds1302_Write_Byte(ds1302_date_add,time_buf[3]);//日 Ds1302_Write_Byte(ds1302_day_add,time_buf[7]);//周 Ds1302_Write_Byte(ds1302_hr_add,time_buf[4]);//时 Ds1302_Write_Byte(ds1302_min_add,time_buf[5]);//分Ds1302_Write_Byte(ds1302_sec_add,time_buf[6]);//秒Ds1302_Write_Byte(ds1302_day_add,time_buf[7]);//周 Ds1302_Write_Byte(ds1302_control_add,0x80);//打开写保护 }void Ds1302_Read_Time(void)  {        unsigned char i,tmp;time_buf[1]=Ds1302_Read_Byte(ds1302_year_add);//年 time_buf[2]=Ds1302_Read_Byte(ds1302_month_add);//月 time_buf[3]=Ds1302_Read_Byte(ds1302_date_add);//日 time_buf[4]=Ds1302_Read_Byte(ds1302_hr_add);//时 time_buf[5]=Ds1302_Read_Byte(ds1302_min_add);//分 time_buf[6]=(Ds1302_Read_Byte(ds1302_sec_add))&0x7F;//秒 time_buf[7]=Ds1302_Read_Byte(ds1302_day_add);//周 for(i=0;i<8;i++)   {           //BCD处理tmp=time_buf[i]/16;time_buf1[i]=time_buf[i]%16;time_buf1[i]=time_buf1[i]+tmp*10;   }}void Ds1302_Init(void){RST_CLR;//RST脚置低SCK_CLR;//SCK脚置低    Ds1302_Write_Byte(ds1302_sec_add,0x00); }
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