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#include "ds1302.h"
unsigned char time_buf1[8] = {20,10,6,5,12,55,00,6};//空年月日時(shí)分秒周
unsigned char time_buf[8] ; //空年月日時(shí)分秒周
/*------------------------------------------------
向DS1302寫入一字節(jié)數(shù)據(jù)
------------------------------------------------*/
void Ds1302_Write_Byte(unsigned char addr, unsigned char d)
{
unsigned char i;
RST_SET;
//寫入目標(biāo)地址：addr
addr = 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;
}
//寫入數(shù)據(jù)：d
for (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總線
}
/*------------------------------------------------
從DS1302讀出一字節(jié)數(shù)據(jù)
------------------------------------------------*/
unsigned char Ds1302_Read_Byte(unsigned char addr)
{
unsigned char i;
unsigned char temp;
RST_SET;
//寫入目標(biāo)地址：addr
addr = 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;
}
//輸出數(shù)據(jù)：temp
for (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總線
return temp;
}
/*------------------------------------------------
向DS1302寫入時(shí)鐘數(shù)據(jù)
------------------------------------------------*/
void Ds1302_Write_Time(void)
{
unsigned char i,tmp;
for(i=0;i<8;i++)
{ //BCD處理
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); //關(guān)閉寫保護(hù)
Ds1302_Write_Byte(ds1302_sec_add,0x80); //暫停
//Ds1302_Write_Byte(ds1302_charger_add,0xa9); //涓流充電
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]); //時(shí)
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); //打開寫保護(hù)
}
/*------------------------------------------------
從DS1302讀出時(shí)鐘數(shù)據(jù)
------------------------------------------------*/
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); //時(shí)
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處理
tmp=time_buf[i]/16;
time_buf1[i]=time_buf[i]%16;
time_buf1[i]=time_buf1[i]+tmp*10;
}
}
/*------------------------------------------------
DS1302初始化
------------------------------------------------*/
void Ds1302_Init(void)
{
RST_CLR; //RST腳置低
SCK_CLR; //SCK腳置低
Ds1302_Write_Byte(ds1302_sec_add,0x00);
} |
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