DS1302控制代碼

兩天的成果， 
/*************************************/
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar year,month,day,week,hours,minutes,seconds;
uchar flag1302,cnt;
/*************************************
控制按鍵
*************************************/
sbit K1=P1^0;
sbit K2=P1^2;
sbit K3=P1^4;
/*************************************
控制LCD液晶顯示
*************************************/
sbit lcdwrite=P2^5;
sbit lcddatecommand=P2^6;
sbit lcde=P2^7;
/*************************************
控制DS1302時(shí)鐘
*************************************/
sbit SCK=P3^6;
sbit RST=P3^5;
sbit SDA=P3^4;
/*************************************
延時(shí)子函數(shù)
*************************************/
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
{	
for(y=0;y<=112;y++)
{
}
}
}
/*************************************
LCD寫命令函數(shù)
*************************************/
void write_command(uchar command)
{
lcddatecommand=0;	 //開啟寫命令
lcdwrite=0;	 //只寫不讀
P0=command;
delay(1);
lcde=1;	 //形成使能E高脈沖
delay(1);
lcde=0;	             //使能E拉低
}
/*************************************
LCD寫數(shù)據(jù)函數(shù)
*************************************/
void write_date(uchar date)
{
lcddatecommand=1;	//開啟寫數(shù)據(jù)
lcdwrite=0;	//只寫不讀
P0=date;
delay(1);
lcde=1;              //形成使能E高脈沖
delay(1);
lcde=0;              //使能E拉低
}
/*************************************
LCD屏幕初始化
*************************************/
void lcdInit()
{
lcde=0;
write_command(0x38);//設(shè)置16*2顯示，5*7點(diǎn)陣，8位數(shù)據(jù)接口
write_command(0x0c);//設(shè)置開顯示，不顯示光標(biāo)
write_command(0x06);// 寫一個(gè)字符后地址指針加1
write_command(0x01);//顯示清0，數(shù)據(jù)指針清0
}
/*************************************
DS1302寫字節(jié)函數(shù)
*************************************/
void write_1302byte(uchar date)
{
uchar i;
for(i=0;i<8;i++)
{
SCK=0;
SDA=date&0x01;
date=date>>1;
SCK=1;//將電平置為已知狀態(tài)
}	
}
/*************************************
DS1302讀字節(jié)函數(shù)
*************************************/
uchar read_1302byte(uchar address)
{
uchar i,temp;
temp=0x00;
RST=0;
delay(1);
SCK=0;
delay(1);
RST=1;
delay(1);
write_1302byte(address);
for(i=0;i<8;i++)
{
if(SDA==1)
{
temp=temp|0x80;     //每次傳輸?shù)妥止?jié)
}
temp=temp>>1;
SCK=1;
delay(1);
SCK=0;
delay(1);
}
return temp;
}
/*************************************
往DS1302中寫數(shù)據(jù)
*************************************/
void write_1302(uchar address,uchar date)
{
RST=0;
delay(1);
SCK=0;
delay(1);
RST=1;
delay(1);
write_1302byte(address);
write_1302byte(date);
RST=0;
}
/*************************************
往DS1302中讀取數(shù)據(jù)
*************************************/
uchar read_1302(uchar address)
{	
uchar date;
RST=0;
SCK=0;
RST=1;
write_1302byte(address);
date=read_1302byte(address);
SCK=1;
RST=0;
return date;
}
/*************************************
初始化時(shí)間
*************************************/
void Init_1302()
{
write_1302(0x8e,0x00);	//寫入不保護(hù)指令 
write_1302(0x80,(14/10)<<4|(14%10));//14秒鐘
write_1302(0x82,(7/10)<<4|(7%10));	//7分鐘
write_1302(0x84,(3/10)<<4|(3%10));	//3小時(shí)
write_1302(0x86,(6/10)<<4|(6%10));  //6日
write_1302(0x88,(6/10)<<4|(6%10));	//6月
write_1302(0x8A,(4/10)<<4|(4%10));	//周四
write_1302(0x8C,(13/10)<<4|(13%10));//13年
write_1302(0x90,0xa5);	//打開充電功能，選擇2K電阻充電方式
write_1302(0x8e,0x80);	//寫保護(hù)
}
/*************************************	
時(shí)鐘顯示
*************************************/
void DisplayHours(uchar hours)
{
uchar shi,ge;
shi=hours/10;
ge=hours%10;
write_command(0x06);
write_command(0x80+0x40);
write_date(shi+48);
write_date(ge+48);
write_date(':');
}
/*************************************
分鐘顯示
*************************************/
void DisplayMinutes(uchar minutes)
{
uchar shi,ge;
shi=minutes/10;
ge=minutes%10;
write_command(0x06);
write_command(0x80+0x43);
write_date(shi+48);
write_date(ge+48);
write_date(':');
}
/*************************************
秒鐘顯示
*************************************/
void DisplaySeconds(uchar seconds)
{
uchar shi,ge;
shi=seconds/10;
ge=seconds%10;
write_command(0x06);
write_command(0x80+0x46);
write_date(shi+48);
write_date(ge+48);
}
/*************************************
年份顯示
*************************************/
void DisplayYear(uchar years)
{
uchar shi,ge;
shi=years/10;
ge=years%10;
write_command(0x06);
write_command(0x80+0x00);
write_date(shi+48);
write_date(ge+48);
write_date('-');
}
/*************************************
月份顯示
*************************************/
void DisplayMonth(uchar month)
{
uchar shi,ge;
shi=month/10;
ge=month%10;
write_command(0x06);
write_command(0x80+0x03);
write_date(shi+48);
write_date(ge+48);
write_date('-');
}
/*************************************
日顯示
*************************************/
void DisplayDay(uchar day)
{
uchar shi,ge;
shi=day/10;
ge=day%10;
write_command(0x06);
write_command(0x80+0x06);
write_date(shi+48);
write_date(ge+48);
}
/*************************************
禮拜顯示
*************************************/
void DisplayWeek(uchar week)
{
uchar i;
i=week;
write_command(0x06);
write_command(0x80+0x09);
switch(i)
{
case 1:write_date('M');write_date('O');write_date('N');
  break;
case 2:write_date('T');write_date('H');write_date('E');
  break;
case 3:write_date('W');write_date('E');write_date('D');
  break;
case 4:write_date('T');write_date('H');write_date('U');
  break;
case 5:write_date('F');write_date('R');write_date('I');
      break;
case 6:write_date('S');write_date('A');write_date('T');
  break;
case 7:write_date('S');write_date('U');write_date('N');
          break;
}
}
/*************************************
讀取日期
*************************************/
void read_date()
{
uchar ReadValue;
    ReadValue = read_1302(0x81);   
    seconds=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);

    ReadValue = read_1302(0x83);  
    minutes=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
 
    ReadValue = read_1302(0x85);  
    hours=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); 

    ReadValue = read_1302(0x87);  
    day=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); 

    ReadValue = read_1302(0x89);  
    month=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
 
    ReadValue = read_1302(0x8d);  
    year=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); 

ReadValue=read_1302(0x8b);                     
    week=ReadValue&0x07;

    DisplaySeconds(seconds);           
    DisplayMinutes(minutes);        
    DisplayHours(hours);             
    DisplayDay(day);                
    DisplayMonth(month);            
    DisplayYear(year);          
DisplayWeek(week); 
}
/*************************************
修改日期
*************************************/
void change()
{
uchar temp,nian,yue,ri,zhou,shi,fen,miao;
if(K1==0)
{
delay(5);
if(K1==0)//證明功能鍵確實(shí)按下
{
cnt++;//計(jì)數(shù)器，計(jì)算按下的次數(shù)
write_1302(0x8e,0x00);//關(guān)閉寫保護(hù)
}
}
/*******************************************
修改年份	
*******************************************/
if(cnt==1)
{
temp=read_1302(0x8d);
nian=((temp&0x70)>>4)*10+(temp&0x0F);
if(K2==0)
{
delay(5);
if(K2==0)//K2鍵實(shí)現(xiàn)加
{
while(!K2);
delay(5);
while(!K2);//確保K2鍵松開
nian++;
if(nian>=100)
{
nian=0;
}
write_1302(0x8e,0x00);
write_1302(0x8c,(nian/10)<<4|(nian%10));
DisplayYear(nian);
write_1302(0x8e,0x80);
}
}
if(K3==0)
{
delay(5);
if(K3==0)//K3鍵實(shí)現(xiàn)減
{
while(!K3);
delay(5);
while(!K3);//確保K3鍵松開
nian--;
if(nian==-1)
{
nian=99;
}
write_1302(0x8e,0x00);
write_1302(0x8c,(nian/10)<<4|(nian%10));
DisplayYear(nian);
write_1302(0x8e,0x80);
}
}
}
/*******************************************
修改月份	
*******************************************/
if(cnt==2)
{
temp=read_1302(0x89);
yue=((temp&0x70)>>4)*10+(temp&0x0F);
if(K2==0)
{
delay(5);
if(K2==0)//K2鍵實(shí)現(xiàn)加
{
while(!K2);
delay(5);
while(!K2);//確保K2鍵松開
yue++;
if(yue>=12)
{
yue=1;
}
write_1302(0x8e,0x00);
write_1302(0x88,(yue/10)<<4|(yue%10));
DisplayMonth(yue);
write_1302(0x8e,0x80);
}
}
if(K3==0)
{
delay(5);
if(K3==0)//K3鍵實(shí)現(xiàn)減
{
while(!K3);
delay(5);
while(!K3);//確保K3鍵松開
yue--;
if(yue==0)
{
yue=12;
}
write_1302(0x8e,0x00);
write_1302(0x88,(yue/10)<<4|(yue%10));
DisplayMonth(yue);
write_1302(0x8e,0x80);
}
}
}
/*******************************************
修改天數(shù)	
*******************************************/
if(cnt==3)
{
temp=read_1302(0x87);
ri=((temp&0x70)>>4)*10+(temp&0x0F);
if(K2==0)
{
delay(5);
if(K2==0)//K2鍵實(shí)現(xiàn)加
{
while(!K2);
delay(5);
while(!K2);//確保K2鍵松開
ri++;
if(ri>=32)
{
ri=1;
}
write_1302(0x8e,0x00);
write_1302(0x86,(ri/10)<<4|(ri%10));
DisplayDay(ri);
write_1302(0x8e,0x80);
}
}
if(K3==0)
{
delay(5);
if(K3==0)//K3鍵實(shí)現(xiàn)減
{
while(!K3);
delay(5);
while(!K3);//確保K3鍵松開
ri--;
if(ri==0)
{
ri=31;
}
write_1302(0x8e,0x00);
write_1302(0x86,(ri/10)<<4|(ri%10));
DisplayDay(ri);
write_1302(0x8e,0x80);
}
}
}
/*******************************************
修改周	
*******************************************/
if(cnt==4)
{
temp=read_1302(0x8B);
zhou=((temp&0x70)>>4)*10+(temp&0x0F);
if(K2==0)
{
delay(5);
if(K2==0)//K2鍵實(shí)現(xiàn)加
{
while(!K2);
delay(5);
while(!K2);//確保K2鍵松開
zhou++;
if(zhou>=8)
{
zhou=1;
}
write_1302(0x8e,0x00);
write_1302(0x8a,(zhou/10)<<4|(zhou%10));
DisplayWeek(zhou);
write_1302(0x8e,0x80);
}
}
if(K3==0)
{
delay(5);
if(K3==0)//K3鍵實(shí)現(xiàn)減
{
while(!K3);
delay(5);
while(!K3);//確保K3鍵松開
zhou--;
if(zhou==-1)
{
zhou=7;
}
write_1302(0x8e,0x00);
write_1302(0x8a,(zhou/10)<<4|(zhou%10));
DisplayWeek(zhou);
write_1302(0x8e,0x80);
}
}
}
/*******************************************
修改小時(shí)	
*******************************************/
if(cnt==5)
{
temp=read_1302(0x85);
shi=((temp&0x70)>>4)*10+(temp&0x0F);
if(K2==0)
{
delay(5);
if(K2==0)//K2鍵實(shí)現(xiàn)加
{
while(!K2);
delay(5);
while(!K2);//確保K2鍵松開
shi++;
if(shi>=24)
{
shi=0;
}
write_1302(0x8e,0x00);
write_1302(0x84,(shi/10)<<4|(shi%10));
DisplayHours(shi);
write_1302(0x8e,0x80);
}
}
if(K3==0)
{
delay(5);
if(K3==0)//K3鍵實(shí)現(xiàn)減
{
while(!K3);
delay(5);
while(!K3);//確保K3鍵松開
shi--;
if(shi==-1)
{
shi=23;
}
write_1302(0x8e,0x00);
write_1302(0x84,(shi/10)<<4|(shi%10));
DisplayHours(shi);
write_1302(0x8e,0x80);
}
}
}
/*******************************************
修改分鐘	
*******************************************/
if(cnt==6)
{
temp=read_1302(0x83);
fen=((temp&0x70)>>4)*10+(temp&0x0F);
if(K2==0)
{
delay(5);
if(K2==0)//K2鍵實(shí)現(xiàn)加
{
while(!K2);
delay(5);
while(!K2);//確保K2鍵松開
fen++;
if(fen>=60)
{
fen=0;
}
write_1302(0x8e,0x00);
write_1302(0x82,(fen/10)<<4|(fen%10));
DisplayMinutes(fen);
write_1302(0x8e,0x80);
}
}
if(K3==0)
{
delay(5);
if(K3==0)//K3鍵實(shí)現(xiàn)減
{
while(!K3);
delay(5);
while(!K3);//確保K3鍵松開
fen--;
if(fen==-1)
{
fen=59;
}
write_1302(0x8e,0x00);
write_1302(0x82,(fen/10)<<4|(fen%10));
DisplayMinutes(fen);
write_1302(0x8e,0x80);
}
}
}
/*******************************************
修改秒鐘	
*******************************************/
if(cnt==7)
{
temp=read_1302(0x81);
miao=((temp&0x70)>>4)*10+(temp&0x0F);
if(K2==0)
{
delay(5);
if(K2==0)//K2鍵實(shí)現(xiàn)加
{
while(!K2);
delay(5);
while(!K2);//確保K2鍵松開
miao++;
if(miao>=60)
{
miao=0;
}
write_1302(0x8e,0x00);
write_1302(0x80,(miao/10)<<4|(miao%10));
DisplaySeconds(miao);
write_1302(0x8e,0x80);
}
}
if(K3==0)
{
delay(5);
if(K3==0)//K3鍵實(shí)現(xiàn)減
{
while(!K3);
delay(5);
while(!K3);//確保K3鍵松開
miao--;
if(miao==-1)
{
miao=59;
}
write_1302(0x8e,0x00);
write_1302(0x80,(miao/10)<<4|(miao%10));
DisplaySeconds(miao);
write_1302(0x8e,0x80);
}
}
}
if(cnt==8)
{
cnt=0;
}
}
/*************************************
主函數(shù)
*************************************/
void main()
{
lcdInit();
flag1302=read_1302(0x81);
if(flag1302&0x80)//秒鐘的最高位為1才需要初始化
{
Init_1302();
}
while(1)
{
change();
read_date();
}	
}