ds1302在12864上显示时间,不走,与我的初始时间不一样-第3页回答

ds1302在12864上显示时间,不走,与我的初始时间不一样

2019-07-15 19:57发布

发下我的程序,大家看看哪有错误
#define uchar unsigned char
#define  unit unsigned int
#define    write_second 0x80
#define    write_minute 0x82
#define    write_hour 0x84
#define    read_second  0x83
#define    read_minute 0x85
#define    read_hour 0x8e
sbit SCLK=P3^3;
sbit SDA=P3^4;
sbit RST=P3^5;
uchar hour=23;minute=59;second=58;
void delay1(uchar x)
{
uchar i;
while(x--)
for(i=0;i<110;i++);
}

void DS1302WriteByte(uchar dat)
{
uchar i;

for(i=0;i<8;i++
{
SDA=dat&0x01
delay1(2);
SCLK=1
delay1(2);
dat>>=1;
SCLK=0;
}
}

uchar DS1302ReadByte()
{
uchar i,dat;
delay1(2);
for(i=0;i<8;i++)
{
dat>>=1;
if(SDA==1
dat|=0x80;

delay1(2);
SCLK=0;
delay1(2);
}
return dat;
}

/*每次发起数据传输之前,要复位ds1302*/

void resetds1302(void)
{
   RST=0;
   SCLK=0;
   RST=1;
}
/*写数据前清除写保护*/
void cleards1302wp(void)
{
   resetds1302();
   RST=1;
   DS1302WriteByte(0X8E);
   DS1302WriteByte(0);
   SDA=0;
   RST=0;
}
/*写完数据设置写保护*/

void setds1302wp(void)
{
   resetds1302();
   RST=1;
   DS1302WriteByte(0X8E);
   DS1302WriteByte(0X80);
   SDA=0;
   RST=0;
}

uchar DS1302Read(uchar addr)
{
   uchar tmp=0;
   resetds1302();
   RST=1;
   DS1302WriteByte(addr);
   tmp=DS1302ReadByte();
   SDA=0;
   RST=0;
   return tmp;

}

void  DS1302Write(uchar addr,uchar dat)
{
resetds1302;
RST=1;
DS1302WriteByte(addr);
DS1302WriteByte(dat);
SDA=0;
RST=0;

}

void set_time(uchar addr,uchar time)
{
   uchar tmp;
   tmp=time/10;
   time=time%10;
   time=time+tmp*16;
   cleards1302wp();
   DS1302Write(addr,time);
   setds1302wp();
}

void read_time(uchar addr,uchar time)
{
time=DS1302Read(addr);

}
void dispalytime(uchar addr,uchar time)
{
   uchar shi,ge;
   shi=time/16;
   ge=time%16;
   com(addr);
   dat(0x30+shi);
   dat(0x30+ge);
}

void  main()
{
  set_time(write_hour,hour);
   set_time(write_minute,minute);
   set_time(write_second,second);
while(1)
{

   read_time(read_hour,hour);
   dispalytime(0x90,hour);
   read_time(read_minute,minute);
   dispalytime(0x92,minute);
   read_time(read_second,second);
   dispalytime(0x94,second);
   }
}

com(),dat()  是12864 显示所需子函数.  硬件上一开始显示初始值,完后马上显示17 : 3; : 3:
这算是乱码吗?且时间不变化,
硬件上没有在晶振处加电容谁有能用的程序给一份  但是大多数都是这样的吧

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