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#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit clk=P3^3; // 時鐘控制引腳
sbit io=P3^4; // 數據輸入輸出引腳
sbit rst=P3^5;
sbit k1=P2^3;//狀態鍵
sbit k2=P2^2;//加
sbit k3=P2^1;//減
sbit k4=P2^0;//查看鍵
sbit beep=P3^2;//蜂鳴器
sbit scl = P3^6;
sbit sda = P3^7;
sbit m1 = P2^4;
sbit m2 = P2^5;//閃爍燈
sbit m3 = P2^7;//標志燈
bit anflg = 1;//查看標志
bit write = 0;//寫標志
static uchar set = 0;
static uint js = 0;
static uint num = 0;
void initTimer();
void key();
void ShowTwinkle();
uchar code wu[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
uchar code du[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xc7,0x7f};
uchar time_buf1[]={20,15,9,5,11,26,50,5}; //初值
uchar buf[]={0,0,0,0,0,0};
uchar clockh=8,clockm=0,clocks=0;
void clock();
void delay(int z)//延時
{
int x;
for(;z>0;z--)
for(x=110;x>0;x--);
}
void write_1302dat(uchar add,uchar dat)//寫地址和數據
{
uchar i;
clk=0;
rst=1;
for(i=0;i<8;i++) //寫地址
{
clk=0;
io=add&0x01;
clk=1;
add>>=1;
}
for(i=0;i<8;i++) //寫數據
{
clk=0;
io=dat&0x01;
clk=1;
dat>>=1;
}
clk=0;
rst=0;
}
uchar read_1302dat(uchar add)//寫讀數據
{
uchar i,dat;
clk=0;
rst=1;
for(i=0;i<8;i++) // 寫地址
{
clk=0;
io=add&0x01;
clk=1;
add>>=1;
}
for(i=0;i<8;i++) //讀數據
{
clk=0;
dat>>=1;
if(io==1)
dat|=0x80;
clk=1;
}
rst=0;
clk=0;
return dat;
}
void Ds1302_Write_Time(void)//將數據寫入相對應的地址
{
unsigned char i,tmp;
for(i=0;i<8;i++)
{ //BCD處理
tmp=time_buf1[i]/10;
time_buf1[i]=time_buf1[i]%10;
time_buf1[i]=time_buf1[i]+tmp*16;
}
rst=0;
clk=0;
rst=1; //啟動
write_1302dat(0x8e,0x00); //關閉寫保護
write_1302dat(0x80,0x80); //暫停
write_1302dat(0x90,0xa9); //涓流充電
write_1302dat(0x8c,time_buf1[1]); //年
write_1302dat(0x88,time_buf1[2]); //月
write_1302dat(0x86,time_buf1[3]); //日
// write_1302dat(ds1302_day_add,time_buf[7]); //周
write_1302dat(0x84,time_buf1[4]); //時
write_1302dat(0x82,time_buf1[5]); //分
write_1302dat(0x80,time_buf1[6]); //秒
write_1302dat(0x8a,time_buf1[7]); //周
write_1302dat(0x8e,0x80); //打開寫保護
}
void Ds1302_Read_Time(void) //轉換
{
unsigned char i,tmp;
io=0;
time_buf1[1]=read_1302dat(0x8d); io=0; //年
time_buf1[2]=read_1302dat(0x89); io=0; //月
time_buf1[3]=read_1302dat(0x87); io=0; //日
time_buf1[4]=read_1302dat(0x85); io=0; //時
time_buf1[5]=read_1302dat(0x83); io=0; //分
time_buf1[6]=read_1302dat(0x81); io=0; //秒
time_buf1[7]=read_1302dat(0x8b); io=0; //周
for(i=0;i<8;i++)
{ //BCD處理
tmp=time_buf1[i]/16;
time_buf1[i]=time_buf1[i]%16;
time_buf1[i]=time_buf1[i]+tmp*10;
}
}
void clock()//鬧鐘函數，在一分鐘之內只叫兩次，一次15秒
{
if(time_buf1[4]==clockh&&time_buf1[5]==clockm&&(time_buf1[6]>30&&time_buf1[6]<45||time_buf1[6]<15))
{
num++;
if(num<40||num>80&&num<120||num>160&&num<200||num>240&&num<280)
{
beep=0;
m3 =~ m3;
}
else
beep=1;
if(num>300)
num=0;
return;
}
else if(time_buf1[6]<=1&&time_buf1[5]==0&&set==0)
{
m3 = 0;
beep=0;
}
else
{
m3 = 1;
beep=1;
}
}
void start() //啟始信號
{
sda=1;
scl=1;
sda=0;
}
void stop() //結束信號
{
sda=0;
scl=1;
sda=1;
}
void ack() //檢測應答
{
uchar i;
sda=1;
scl=1;
while((sda==1)&(i<100)) i++;
scl=0;
}
void write_byte(uchar dat) //寫一個字節
{
uchar i;
for(i=0;i<8;i++) //循環移入八位數據，高位在前
{
dat<<=1;
scl=0;
sda=CY;
scl=1;
}
scl=0;
}
uchar read_byte() //讀一個字節
{
uchar i,dat;
for(i=0;i<8;i++) //循環讀入八位數據，高位在前
{
dat<<=1;
scl=1;
if(sda==1)
dat|=0x01;
scl=0;
}
return dat;
}
void write_dat2402(uchar add,uchar dat) //向24C02寫一個字節進去
{
start();
write_byte(0xa0); // 器件地址以及寫入操作
ack();
write_byte(add); // 寫入數據的地址
ack();
write_byte(dat); // 寫入的數據
ack();
stop();
}
uchar read_dat2402(uchar add) //從24C02讀一個字節進去
{
uchar dat;
start();
write_byte(0xa0); // 器件地址以及寫入操作
ack();
write_byte(add); // 讀出數據的地址
ack();
start();
write_byte(0xa1); // 器件地址以及讀取操作
ack();
dat=read_byte();
stop();
return dat;
}
void init24c02()//初始化24c02
{
sda=1;
scl=1;
}
void cunchu()//將數據存入24c02，加判斷防止數據出錯
{
time_buf1[4] = read_dat2402(4); //時
if(time_buf1[4] > 23)
time_buf1[4] = 0;
delay(5);
time_buf1[5] = read_dat2402(5); //分
if(time_buf1[5] > 59)
time_buf1[5] = 0;
delay(5);
time_buf1[6] = read_dat2402(6); //秒
if(time_buf1[6] > 59)
time_buf1[6] = 0;
delay(5);
}
void xie()//將數據寫入24c02
{
if(write == 1)
{
write = 0;
write_dat2402(4,time_buf1[4]); //時
write_dat2402(5,time_buf1[5]); //分
write_dat2402(6,time_buf1[6]); //秒
}
}
void main()//主函數
{
rst=0;
clk=0;
write_1302dat(0x80,0x00);
initTimer();
init24c02();
cunchu();
beep = 0;
m3 = 0;
delay(1000);
m3 = 1;
beep = 1;//開機響一次
while(1)
{
key(); //按鍵
clock();
Ds1302_Read_Time();
ShowTwinkle(); //顯示函數
xie();
}
}
void time0() interrupt 1
{
static uchar cnt = 0;
TH0=(65536-1000)/256;
TL0=(65536-1000)%256;
js++;
if(js>1000)
{
write = 1; //每一秒向24c02寫一次
js=0;
}
if(++cnt>5) cnt=0;
P0=0xff;
P1=wu[cnt];
P0=du[buf[cnt]];
}
void initTimer()//定時器初始化函數
{
TMOD=0x01;
TH0=(65536-1000)/256;
TL0=(65536-1000)%256;
EA=1;
ET0=1;
TR0=1;
}
void key()//按鍵函數
{
static uchar flg=0;
static uchar j = 0;
if(k1==0)
{
if(flg==0)
{
flg=1;
set++;
if(set>9) set=0;
}
}
else if(k2==0)
{
if(flg==0)
{
flg=1;
switch(set)
{
case 9 : clockh++;//clockh
if(clockh>23)
clockh=0;
break;
case 8 : clockm++;//clockm
if(clockm>59)
clockm=0;
break;
case 7 : time_buf1[1]++;//年
if(time_buf1[1]>99)
time_buf1[1]=0;
Ds1302_Write_Time(); break;
case 6 : time_buf1[2]++; //月
if(time_buf1[2]>12)
time_buf1[2]=1;
Ds1302_Write_Time(); break;
case 5 : time_buf1[3]++; //日
if(time_buf1[3]>31)
time_buf1[3]=1;
Ds1302_Write_Time(); break;
case 4 : time_buf1[7]++; //星期
if(time_buf1[7]>7)
time_buf1[7]=1;
Ds1302_Write_Time(); break;
case 3 : time_buf1[4]++; //時
if(time_buf1[4]>23)
time_buf1[4]=0;
Ds1302_Write_Time(); break;
case 2 : time_buf1[5]++; //分
if(time_buf1[5]>59)
time_buf1[5]=0;
Ds1302_Write_Time(); break;
case 1 : time_buf1[6]++; //秒
if(time_buf1[6]>59)
time_buf1[6]=0;
Ds1302_Write_Time(); break;
}
}
}
else if(k3==0)
{
if(flg==0)
{
flg=1;
switch(set)
{
case 9 : clockh--; //clockh
if(clockh>100)
clockh=23;
if(clockh<0)
clockh=23;
break;
case 8 : clockm--; //clockm
if(clockm>100)
clockm=59;
if(clockm<0)
clockm=59;
break;
case 7 : time_buf1[1]--; //年
if(time_buf1[1]>100)
time_buf1[1]=99;
if(time_buf1[1]<0)
time_buf1[1]=99;
Ds1302_Write_Time(); break;
case 6 : time_buf1[2]--; //月
if(time_buf1[2]>100)
time_buf1[2]=12;
if(time_buf1[2] < 1)
time_buf1[2] = 12;
Ds1302_Write_Time(); break;
case 5 : time_buf1[3]--; //日
if(time_buf1[3]>100)
time_buf1[3]=31;
if(time_buf1[3]<1)
time_buf1[3]=31;
Ds1302_Write_Time(); break;
case 4 : time_buf1[7]--; //周
if(time_buf1[7]>100)
time_buf1[7]=7;
if(time_buf1[7]<1)
time_buf1[7]=1;
Ds1302_Write_Time(); break;
case 3 : time_buf1[4]--; //時
if(time_buf1[4]>100)
time_buf1[4]=23;
if(time_buf1[4]<0)
time_buf1[4]=23;
Ds1302_Write_Time(); break;
case 2 : time_buf1[5]--; //分
if(time_buf1[5]>100)
time_buf1[5]=59;
if(time_buf1[5]<0)
time_buf1[5]=59;
Ds1302_Write_Time(); break;
case 1 : time_buf1[6]--; //秒
if(time_buf1[6]>100)
time_buf1[6]=59;
if(time_buf1[6]<0)
time_buf1[6]=59;
Ds1302_Write_Time(); break;
}
}
}
else if(k4 == 0)
{
if(flg == 0)
{
flg =1;
anflg = anflg*0;
j++;
if(j == 1)
set = 6;
else if(j == 2)
set = 7;
else if(j == 3)
set = 9;
else
set = 0;
if(j > 4)
j = 0;
}
}
else
flg=0;
}
void ShowTwinkle()//狀態顯示函數
{
if(set==0)
{
buf[0]=time_buf1[4]/10;
buf[1]=time_buf1[4]%10;
buf[2]=time_buf1[5]/10;
buf[3]=time_buf1[5]%10;
buf[4]=time_buf1[6]/10;
buf[5]=time_buf1[6]%10;
if(js<500)
{
m1 = 0;
m2 = 0;
}
if(js>500)
{
m1 = 1;
m2 = 1;
}
}
if(set==1)
{
buf[0]=time_buf1[4]/10;
buf[1]=time_buf1[4]%10;
buf[2]=time_buf1[5]/10;
buf[3]=time_buf1[5]%10;
if(anflg == 1)
{
if(js<500)
{
buf[4]=time_buf1[6]/10;
buf[5]=time_buf1[6]%10;
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[4]=10;buf[5]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[4]=time_buf1[6]/10;
buf[5]=time_buf1[6]%10;
m1 = 0;m2 = 0;
}
}
if(set==2)
{
buf[0]=time_buf1[4]/10;
buf[1]=time_buf1[4]%10;
buf[4]=time_buf1[6]/10;
buf[5]=time_buf1[6]%10;
if(anflg == 1)
{
if(js<500)
{
buf[2]=time_buf1[5]/10;
buf[3]=time_buf1[5]%10;
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[2]=10;buf[3]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[2]=time_buf1[5]/10;
buf[3]=time_buf1[5]%10;
m1 = 0;m2 = 0;
}
}
if(set==3)
{
buf[2]=time_buf1[5]/10;
buf[3]=time_buf1[5]%10;
buf[4]=time_buf1[6]/10;
buf[5]=time_buf1[6]%10;
if(anflg == 1)
{
if(js<500)
{
buf[0]=time_buf1[4]/10;
buf[1]=time_buf1[4]%10;
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[0]=10;buf[1]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[0]=time_buf1[4]/10;
buf[1]=time_buf1[4]%10;
m1 = 0;m2 = 0;
}
}
if(set==4)
{
buf[0]=time_buf1[2]/10;
buf[1]=time_buf1[2]%10;
buf[2]=time_buf1[3]/10;
buf[3]=time_buf1[3]%10;
buf[4]=10;
if(anflg == 1)
{
if(js<500)
{
buf[5]=time_buf1[7];
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[5]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[5]=time_buf1[7];
m1 = 0;m2 = 0;
}
}
if(set==5)
{
buf[0]=time_buf1[2]/10;
buf[1]=time_buf1[2]%10;
buf[4]=10;
buf[5]=time_buf1[7];
if(anflg == 1)
{
if(js<500)
{
buf[2]=time_buf1[3]/10;
buf[3]=time_buf1[3]%10;
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[2]=10;buf[3]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[2]=time_buf1[3]/10;
buf[3]=time_buf1[3]%10;
m1 = 0;m2 = 0;
}
}
if(set==6)
{
buf[2]=time_buf1[3]/10;
buf[3]=time_buf1[3]%10;
buf[4]=10;
buf[5]=time_buf1[7];
if(anflg == 1)
{
if(js<500)
{
buf[0]=time_buf1[2]/10;
buf[1]=time_buf1[2]%10;
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[0]=10;
buf[1]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[0]=time_buf1[2]/10;
buf[1]=time_buf1[2]%10;
m1 = 0;m2 = 0;
}
}
if(set==7)
{
buf[0]=2;
buf[1]=0;
buf[4]=10;buf[5]=10;
if(anflg == 1)
{
if(js<500)
{
buf[2]=time_buf1[1]/10;
buf[3]=time_buf1[1]%10;
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[2]=10;buf[3]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[2]=time_buf1[1]/10;
buf[3]=time_buf1[1]%10;
m1 = 0;m2 = 0;
}
}
if(set==8)
{
buf[0]=clockh/10;
buf[1]=clockh%10;
buf[4]=clocks/10;
buf[5]=clocks%10;
if(anflg == 1)
{
if(js<500)
{
buf[2]=clockm/10;
buf[3]=clockm%10;
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[2]=10;buf[3]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[2]=clockm/10;
buf[3]=clockm%10;
m1 = 0;m2 = 0;
}
}
if(set==9)
{
buf[2]=clockm/10;
buf[3]=clockm%10;
buf[4]=clocks/10;
buf[5]=clocks%10;
if(anflg == 1)
{
if(js<500)
{
buf[0]=clockh/10;
buf[1]=clockh%10;
m1 = 0;m2 = 0;
}
if(js>500)
{
buf[0]=10;buf[1]=10;
m1 = 1;m2 = 1;
}
}
else
{
buf[0]=clockh/10;
buf[1]=clockh%10;
m1 = 0;m2 = 0;
}
}
}

復制代碼

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