关于51单片机制作时钟？不知道是断电保护还是代码问题 -

#include<reg52.h>
sbit lsa=P2^2;
sbit lsb=P2^3;
sbit lsc=P2^4;
sbit k1=P3^1;
sbit k2=P3^0;
sbit k3=P3^2;
sbit SDA=P2^0;
sbit SCL=P2^1;
sbit e=P2^7;
sbit rw=P2^5;
sbit rs=P2^6;
typedef unsigned int ui;
typedef unsigned char uc;
ui code shuju[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
ui disp[6];
ui num,shi,fen,miao;
ui ss=0;
uc code table[]=" 2020-2-12 WED";
void delay(ui i)
{
while(i--);
}
void Delay10us()
{
unsigned char a,b;
for(b=1;b>0;b--)
for(a=2;a>0;a--);[/backcolor][/color]
[color=rgb(102, 102, 102)][backcolor=rgb(255, 255, 255)]}
void yjdelay(ui c)
{
uc a,b;
for (; c>0; c--)
{
for (b=199;b>0;b--)
{
for(a=1;a>0;a--);
}
}
}[/backcolor][/color]
[color=rgb(102, 102, 102)][backcolor=rgb(255, 255, 255)]void I2cStart()
{
SDA=1;
Delay10us();
SCL=1;
Delay10us();//?????????SDA???????>4.7us
SDA=0;
Delay10us();//?????????>4us
SCL=0;
Delay10us();
}
void I2cStop()
{
SDA=0;
Delay10us();
SCL=1;
Delay10us();//??????????4.7us
SDA=1;
Delay10us();
}
void respons()
{
ui b;
SCL=1;
while(SDA)//????????????????豸??SDA????
{
b++;
if(b>200) //???????2000us????????????????????????????????
{
SCL=0;
Delay10us();
}
}
SCL=0;
Delay10us();
}
void I2cSendByte(unsigned char dat)
{
unsigned char a=0,b=0;//???255??????????????1us????????255us??
for(a=0;a<8;a++)//?????8λ???????λ???
{
SDA=dat>>7; //?????????SCL=0??????????????SDA???
dat=dat<<1;
Delay10us();
SCL=1;
Delay10us();//???????>4.7us
SCL=0;
Delay10us();//??????4us
}
SDA=1;
Delay10us();
SCL=0;
Delay10us();
}
unsigned char I2cReadByte()
{
unsigned char a=0,dat=0;
SDA=1; //?????????????????SCL????0
Delay10us();
for(a=0;a<8;a++)//????8?????
{
SCL=1;
Delay10us();
dat<<=1;
dat|=SDA;
Delay10us();
SCL=0;
Delay10us();
}
return dat;
}[/backcolor][/color]
[color=rgb(102, 102, 102)][backcolor=rgb(255, 255, 255)]
void write_add(unsigned char addr,unsigned char dat)
{
I2cStart();
I2cSendByte(0xa0);//????д???????
respons();
I2cSendByte(addr);//?????д???????
respons();
I2cSendByte(dat); //????????
respons();
I2cStop();
}
unsigned char read_add(unsigned char addr)
{
unsigned char num;
I2cStart();
I2cSendByte(0xa0); //????д???????
respons();
I2cSendByte(addr); //????????????
respons();
I2cStart();
I2cSendByte(0xa1); //????????????
respons();
num=I2cReadByte(); //???????
I2cStop();
return num;
}
void init24c02()
{
SDA=1;
Delay10us();
SCL=1;
Delay10us();
miao=read_add(1);
fen=read_add(2);
shi=read_add(3);
}
void write_com(uc com)
{
rs=0;
rw=0;
e=0;
P0=com;
yjdelay(1);
e=1;
yjdelay(5);
e=0;
}
void lcdwrite_data(uc dat)
{
e=0;
rs=1;
rw=0;
P0=dat;
yjdelay(1);
e=1;
yjdelay(5);
e=0;
}
void write_sfm(uc add,uc date)
{
uc shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
lcdwrite_data(0x30+shi);
lcdwrite_data(0x30+ge);
}
void lcdinit()
{
write_com(0x38);
write_com(0x0c); //?????????????
write_com(0x06); //д???????1
write_com(0x01); //????
}
void yejing()
{
uc i;
lcdinit();
for(i=0;i<15;i++)
{
lcdwrite_data(table[i]);
delay(10);
}
write_com(0x80+0x40+6);
lcdwrite_data(':');
delay(10);
write_com(0x80+0x40+9);
lcdwrite_data(':');
delay(10);
write_sfm(4,shi);
write_sfm(7,fen);
write_sfm(10,miao);
}
void datapros()
{
disp[0]=shuju[miao%10];
disp[1]=shuju[miao/10];
disp[2]=shuju[fen%10];
disp[3]=shuju[fen/10];
disp[4]=shuju[shi%10];
disp[5]=shuju[shi/10];
}
void display()
{
ui i;
for(i=0;i<6;i++)
{
switch(i)
{
case(0): lsa=0;lsb=0;lsc=0;break;
case(1): lsa=1;lsb=0;lsc=0;break;
case(2): lsa=0;lsb=1;lsc=0;break;
case(3): lsa=1;lsb=1;lsc=0;break;
case(4): lsa=0;lsb=0;lsc=1;break;
case(5): lsa=1;lsb=0;lsc=1;break;
}
P0=disp[i];
delay(100);
P0=0x00;
}
}
void init()
{
TMOD=0x01;
TH0=0xfc;
TL0=0x18; //1ms
EA=1;
TR0=1;
ET0=1;
}
void key()
{
if(k1==0)
{
delay(100);
{
if(k1==0)
{
ss=ss+2;
while(!k1);
switch(ss)
{
case(2): lsa=0;lsb=0;lsc=0;TR0=0;write_com(0x80+0x40+10);write_com(0x0f);break;
case(4): lsa=0;lsb=1;lsc=0;write_com(0x80+0x40+7);break;
case(6): lsa=0;lsb=0;lsc=1;write_com(0x80+0x40+4);break;
case(8): ss=0;write_com(0x0c);TR0=1;break;
}
}
}
}
if(ss!=0)
{
if(k2==0)
{
delay(100);
{
if(k2==0)
{
while(!k2);
if(ss==2)
{
miao++;
if(miao==60)
miao=0;
write_sfm(10,miao);
write_com(0x80+0x40+10);
write_add(1,miao);
}
if(ss==4)
{
fen++;
if(fen==60)
fen=0;
write_sfm(7,fen);
write_com(0x80+0x40+7);
write_add(2,fen);
}
if(ss==6)
{
shi++;
if(shi==24)
shi=0;
write_sfm(4,shi);
write_com(0x80+0x40+4);
write_add(3,shi);
}
}
}
}
if(k3==0)
{
delay(100);
if(k3==0)
{
while(!k3);
if(ss==2)
{
miao--;
if(miao==-1)
miao=59;
write_sfm(10,miao);
write_com(0x80+0x40+10);
write_add(1,miao);
}
if(ss==4)
{
fen--;
if(fen==-1)
fen=59;
write_sfm(7,fen);
write_com(0x80+0x40+7);
write_add(2,fen);
}
if(ss==6)
{
shi--;
if(shi==-1)
shi=23;
write_sfm(4,shi);
write_com(0x80+0x40+4);
write_add(3,shi);
}
}
}
}
}
void main()
{
init();
init24c02();
yejing();
while(1)
{
key();
datapros();
display();
}
}
void init0() interrupt 1
{
TH0=0xfc;
TL0=0x18;
num++;
if(num==1000)
{
miao++;
write_sfm(10,miao);
num=0;
if(miao==60)
{
miao=0;
fen++;
write_sfm(7,fen);
if(fen==60)
{
fen=0;
shi++;
write_sfm(4,shi);
if(shi==24)
{
shi=0;
write_sfm(4,shi);
write_add(3,shi);
}
write_sfm(7,fen);
write_add(2,fen);
}
write_sfm(10,miao);
write_add(1,miao);
}
}
}

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