void
DS1302_Delay(unsigned int dtime) {
unsigned int temp;
for(temp=0;temp
}
//DS1302复位
void DS1302_Reset(void) {
DS1302_DIR |= (DS1302_RST + DS1302_SCLK);
DS1302_SCLK_LO;
DS1302_RST_LO;
DS1302_Delay(10);
DS1302_SCLK_HI;
}
//向DS1302写入一个字节
void DS1302_WriteOneByte(unsigned char w_dat) {
unsigned char temp;
DS1302_RST_HI;
DS1302_DIR |= DS1302_SDI;
for(temp=8;temp>0;temp--) {
DS1302_SDI_LO;
if(w_dat&BIT0)
DS1302_SDI_HI;
DS1302_SCLK_LO;
DS1302_Delay(10);
DS1302_SCLK_HI;
DS1302_Delay(10);
w_dat >>=1;
}
}
//从DS1302中读取一个字节
unsigned char DS1302_ReadOneByte(void) {
unsigned char temp,rdata;
rdata = 0x00;
DS1302_RST_HI;
DS1302_DIR &= ~DS1302_SDI;
for(temp=0;temp<7;temp++){
DS1302_SCLK_HI;
DS1302_Delay(10);
DS1302_SCLK_LO;
DS1302_Delay(10);
if((DS1302_IN&DS1302_SDI)==DS1302_SDI)
rdata |= BIT7;
rdata >>= 1;
}
return(rdata);
}
//向DS1302中写入地址后写入数据
void DS1302_WriteData(unsigned char addr,unsigned char w_dat) {
DS1302_RST_LO;
DS1302_SCLK_LO;
DS1302_RST_HI;
DS1302_WriteOneByte(addr); //写入地址
DS1302_WriteOneByte(w_dat); //写入数据
DS1302_SCLK_HI;
DS1302_RST_LO;
}
//向DS1302写入地址后,从DS1302中读取数据
unsigned char DS1302_ReadData(unsigned char addr) {
unsigned char r_dat;
DS1302_RST_LO;
DS1302_SCLK_LO;
DS1302_RST_HI;
DS1302_WriteOneByte(addr); //写入地址
r_dat = DS1302_ReadOneByte(); //读出数据
DS1302_SCLK_LO;
DS1302_RST_LO;
return(r_dat);
}
//按照SettingData的设置设置DS1302的时间
void DS1302_SettingData(void) {
unsigned char temp;
unsigned char addr = 0x8C;
DS1302_WriteData(0x8E,0x00); //写入控制命令,禁用写保护
for(temp=0;temp&l