#include <REGX52.H>
sbit DS1302_SCLK = P3^6;
sbit DS1302_IO = P3^4;
sbit DS1302_CE = P3^5;
#define DS1302_SECOND 0x80
#define DS1302_MINUTE 0x82
#define DS1302_HOUR 0x84
#define DS1302_DATE 0x86
#define DS1302_MONTH 0x88
#define DS1302_DAY 0x8A
#define DS1302_YEAR 0x8C
#define DS1302_WP 0x8E
char DS1302_Time[]={23,1,1,0,0,55,0,1};
void DS1302_Init() ///LCD1602初始化
{
DS1302_SCLK = 0;
DS1302_CE = 0;
}
void DS1302_WriteByte(unsigned char Command,Date)
{
unsigned char i;
DS1302_CE = 1;
for(i = 0 ; i < 8 ; i++)
{
DS1302_IO = Command&(0x01<<i);
DS1302_SCLK = 1;
DS1302_SCLK = 0;
}
for(i = 0 ; i < 8 ; i++)
{
DS1302_IO = Date&(0x01<<i);
DS1302_SCLK = 1;
DS1302_SCLK = 0;
}
DS1302_CE = 0;
}
unsigned char DS1302_ReadByte(unsigned char Command)
{
unsigned char i,Date = 0x00;
Command|= 0x01;
DS1302_CE = 1;
for(i = 0 ; i < 8 ; i++)
{
DS1302_IO = Command&(0x01<<i);
DS1302_SCLK = 0;
DS1302_SCLK = 1;
}
for(i = 0 ; i < 8 ; i++)
{
DS1302_SCLK = 1;
DS1302_SCLK = 0;
if(DS1302_IO){Date|=(0x01<<i);}
}
DS1302_CE = 0;
DS1302_IO = 0;
return Date;
}
void DS1302_SetTime()
{
DS1302_WriteByte(DS1302_WP,0x00);
DS1302_WriteByte(DS1302_YEAR,DS1302_Time[0]/10*16+DS1302_Time[0]%10); //十进制转BCD码
DS1302_WriteByte(DS1302_MONTH,DS1302_Time[1]/10*16+DS1302_Time[1]%10);
DS1302_WriteByte(DS1302_DATE,DS1302_Time[2]/10*16+DS1302_Time[2]%10);
DS1302_WriteByte(DS1302_HOUR,DS1302_Time[3]/10*16+DS1302_Time[3]%10);
DS1302_WriteByte(DS1302_MINUTE,DS1302_Time[4]/10*16+DS1302_Time[4]%10);
DS1302_WriteByte(DS1302_SECOND,DS1302_Time[5]/10*16+DS1302_Time[5]%10);
DS1302_WriteByte(DS1302_WP,0x80);
}
void DS1302_ReadTime()
{
unsigned char Temp;
Temp = DS1302_ReadByte(DS1302_YEAR);
DS1302_Time[0] = Temp/16*10+Temp%16;
Temp = DS1302_ReadByte(DS1302_MONTH);
DS1302_Time[1] = Temp/16*10+Temp%16;
Temp = DS1302_ReadByte(DS1302_DATE);
DS1302_Time[2] = Temp/16*10+Temp%16;
Temp = DS1302_ReadByte(DS1302_HOUR);
DS1302_Time[3] = Temp/16*10+Temp%16;
Temp = DS1302_ReadByte(DS1302_MINUTE);
DS1302_Time[4] = Temp/16*10+Temp%16;
Temp = DS1302_ReadByte(DS1302_SECOND);
DS1302_Time[5] = Temp/16*10+Temp%16;
}
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