又研究了一晚，实在搞不出来了，不是上电初始化，就是不初始化1302不走时
#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uchar temp[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit ce=P2^0;//ds1302
sbit sclk=P1^0;//时钟
sbit io=P1^1;//数据口
//定义摁键
sbit key1=P3^2;//小时+
sbit key2=P3^4;//小时-
sbit key3=P3^6;//分钟+
sbit key4=P3^7;//分钟-
//定义蜂鸣器
sbit beep=P2^2;
//定义段位
sbit duan=P2^6;
sbit wei=P2^7;
//位寻址寄存器定义
sbit ACC_7=ACC^7;
uchar num,dat1,dat2,dat3;
//地址数据发送子程序
void write1302(unsigned char addr,dat)
{
uchar i,temp;
ce=0;
sclk=0;
ce=1;
for(i=8;i>0;i--)
{
sclk=0;
temp=addr;
io=(bit)(temp&0x01);
addr>>=1;
sclk=1;
}
for(i=8;i>0;i--)
{
sclk=0;
temp=dat;
io=(bit)(temp&0x01);
dat>>=1;
sclk=1;
}
ce=0;
}
//数据获取子程序
uchar read1302(uchar addr)
{
uchar i,temp;
ce=0;
sclk=0;
ce=1;
for(i=8;i>0;i--)
{
sclk=0;
temp=addr;
io=(bit)(temp&0x01);
addr>>=1;
sclk=1;
}
for(i=8;i>0;i--)
{
ACC_7=io;
sclk=1;
ACC>>=1;
sclk=0;
}
ce=0;
dat1=ACC;
dat2=dat1/16;
dat1=dat1%16;
dat1=dat1+dat2*10;
return(dat1);
}
//读出秒值
uchar read1302_flag(uchar address)
{
uchar i,temp;
ce=0;
sclk=0;
ce=1;
for(i=8;i>0;i--)
{
sclk=0;
temp=address;
io=(bit)(temp&0x01);
address>>=1;
sclk=1;
}
for(i=7;i>0;i--)
{
ACC_7=io;
sclk=1;
ACC>>=1;
sclk=0;
}
ACC_7=io;
sclk=1;
sclk=0;
ce=0;
dat3=ACC;
return(dat3);
}
//初始化1302
void init()
{
read1302_flag(0xc1);
if(dat3!=0xff)
{
write1302(0x8e,0x00);
// write1302(0x90,0x06);
write1302(0x80,0x56);
write1302(0x82,0x46);
write1302(0x84,0x19);
write1302(0xc0,0xff);
write1302(0x8e,0x80);
}
}
//简单延时
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
//把1302读取到的数据显示到数码管上
void xianshi(uchar wela1,wela2)
{
uchar shi,ge;
shi=dat1/10;
ge=dat1%10;
wei=1;
P0=wela1;
wei=0;
duan=1;
P0=temp[shi];
duan=0;
delay(5);
wei=1;
P0=wela2;
wei=0;
duan=1;
P0=temp[ge];
duan=0;
delay(5);
}
//蜂鸣器发声程序
void di()
{
beep=0;
delay(50);
beep=1;
}
//摁键检测
void key_check()
{
if(key1==0)
{
delay(1);
if(key1==0)
{
di();
while(!key1);
write1302(0x8e,0x00);
read1302(0x85);
dat1=dat1++;
if(dat1==24)
dat1=0;
dat1=dat1%10+dat1/10*16;
write1302(0x84,dat1);
write1302(0x8e,0x80);
}
}
if(key3==0)
{
delay(1);
if(key3==0)
{
di();
while(!key3);
write1302(0x8e,0x00);
read1302(0x83);
dat1=dat1++;
if(dat1==60)
dat1=0;
dat1=dat1%10+dat1/10*16;
write1302(0x82,dat1);
write1302(0x8e,0x80);
}
}
if(key2==0)
{
delay(1);
if(key2==0)
{
di();
while(!key2);
write1302(0x8e,0x00);
read1302(0x85);
dat1=dat1--;
if(dat1==0)
dat1=23;
dat1=dat1%10+dat1/10*16;
write1302(0x84,dat1);
write1302(0x8e,0x80);
}
}
if(key4==0)
{
delay(1);
if(key4==0)
{
di();
while(!key4);
write1302(0x8e,0x00);
read1302(0x83);
dat1=dat1--;
if(dat1==0)
dat1=59;
dat1=dat1%10+dat1/10*16;
write1302(0x82,dat1);
write1302(0x8e,0x80);
}
}
}
//主程序
void main()
{
init();
while(1)
{
key_check();//键盘检测
read1302(0x83);//读分钟
xianshi(0xdf,0xef); //显示分钟
read1302(0x85);//读小时
xianshi(0x7f,0xbf);//显示小时
}
}
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