ds1302模块显示不出来时间就是000000，该怎么解决？
程序如下，/****************************
DS1302内部函数
*****************************/
#ifndef _ds1302_h_
#define _ds1302_h_
sbit T_RST=P3^5;
sbit T_CLK=P3^6;
sbit T_IO=P3^4;
sbit ACC0=ACC^0;
sbit ACC7=ACC^7;
typedef struct systemtime
{
uchar second;
uchar minute;
uchar hour;
uchar week;
uchar day;
uchar month;
uchar year;
uchar DateString;
uchar TimeString;
}systemtime; //定义的时间类型
/*向DS1302中写入1BYTE数据*/
void writeB(uchar ucda)
{
uchar i;
ACC=ucda;
for(i=8;i>0;i--)
{
T_IO=ACC0;
T_CLK=1;
T_CLK=0;
ACC=ACC>>1;
}
// T_IO=0;
}
/*从DS1302中读出1BYTE数据*/
uchar readB()
{
uchar i;
for(i=8;i>0;i--)
{
ACC=ACC>>1;
ACC7=T_IO;
T_CLK=1;
T_CLK=0;
}
return(ACC);
}
/*单字节读，向DS1302某地址中读出数据，
先写地址后写命令/数据*************/
uchar r_ds1302(uchar ucaddr)
{
uchar ucda;
T_RST=0;
T_CLK=0;
T_RST=1;
writeB(ucaddr);
ucda=readB();
T_CLK=1;
T_RST=0;
return(ucda);
}
/**********************************
读取 DS1302当前时间，
格式为:
秒，分，时，日，月，星期，年
**********************************/
void get_ds1302(systemtime *Time)
{
uchar readtime;
readtime = r_ds1302(0x81);//秒寄存器读操作0x81
Time->second = ((readtime&0x70)>>4)*10 + (readtime&0x0f); //十位+个位
readtime = r_ds1302(0x83);//分寄存器读操作0x83
Time->minute = ((readtime&0x70)>>4)*10 + (readtime&0x0f);
readtime = r_ds1302(0x85);
Time->hour = ((readtime&0x70)>>4)*10 + (readtime&0x0f);
readtime = r_ds1302(0x87);
Time->day = ((readtime&0x70)>>4)*10 + (readtime&0x0f);
readtime = r_ds1302(0x89);
Time->month = ((readtime&0x70)>>4)*10 + (readtime&0x0f);
readtime = r_ds1302(0x8d);
Time->year = ((readtime&0x70)>>4)*10 + (readtime&0x0f);
//将十进制数转换为液晶显示的ASCII值
Time->DateString = Time->year/10 + '0';
Time->DateString = Time->year%10 + '0';
Time->DateString = '-';
Time->DateString = Time->month/10 + '0';
Time->DateString = Time->month%10 + '0';
Time->DateString = '-';
Time->DateString = Time->day/10 + '0';
Time->DateString = Time->day%10 + '0';
Time->DateString = '\0';
//将十进制数转换为液晶显示的ASCII值
Time->TimeString = Time->hour/10 + '0';
Time->TimeString = Time->hour%10 + '0';
Time->TimeString = ':';
Time->TimeString = Time->minute/10 + '0';
Time->TimeString = Time->minute%10 + '0';
Time->TimeString = ':';
Time->TimeString = Time->second/10 + '0';
Time->TimeString = Time->second%10 + '0';
Time->TimeString = '\0';
}
#endif
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