#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uchar temp[]={0xeb,0x88,0xb3,0xba,0xd8,0x7a,0x7b,0xa8,0xfb,0xfa};
sbit ce=P3^5;//ds1302
sbit sclk=P3^7;//時鐘
sbit io=P3^6;//數據口
//定義摁鍵
sbit key1=P1^5;//小時+
sbit key2=P1^4;//小時-
sbit key3=P1^3;//分鐘+
sbit key4=P1^2;//分鐘-
//定義蜂鳴器
sbit beep=P1^6;
//定義段位
sbit duan=P1^0;
sbit wei=P1^1;
//位尋址寄存器定義
sbit ACC_7=ACC^7;
uchar num,dat1,dat2;
//地址數據發送子程序
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;
}
//數據獲取子程序
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);
}
//初始化1302
void init()
{
write1302(0x8e,0x00);
write1302(0x90,0x06);
write1302(0x80,0x56);
write1302(0x82,0x46);
write1302(0x84,0x19);
write1302(0x8e,0x80);
}
//簡單延時
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
//把1302讀取到的數據顯示到數碼管上
void xianshi(uchar wela1,wela2)
{
uchar shi,ge;
shi=dat1/10;
ge=dat1%10;
wei=1;
P2=wela1;
wei=0;
duan=1;
P2=temp[shi];
duan=0;
delay(5);
wei=1;
P2=wela2;
wei=0;
duan=1;
P2=temp[ge];
duan=0;
delay(5);
}
//蜂鳴器發聲程序
void di()
{
beep=0;
delay(50);
beep=1;
}
//摁鍵檢測
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();//鍵盤檢測
read1302(0x83);//讀分鐘
xianshi(0xdf,0xef); //顯示分鐘
read1302(0x85);//讀小時
xianshi(0x7f,0xbf);//顯示小時
}
}
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