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自己整理的电子万年历的学习资料，有基本功能，非常适合初学者，通俗易懂
#include<reg51.h>
#include<intrins.h>
#include"ds1302.h"
#define uchar unsigned char
#define uint unsigned int
sbit P1_2=P1^2;
sbit P1_3=P1^3;
sbit P1_4=P1^4;
sbit P1_5=P1^5;
sbit P1_6=P1^6;
sbit P1_7=P1^7;
sbit key_y_h=P2^0;
sbit key_m_m=P2^1;
sbit key_d_s=P2^2;
sbit key_set=P2^3;
sbit key_start=P2^4;
sbit LED=P2^5;
uchar year,month,day,week,hour,min,sec,flag,flag1;
uchar sec_l,sec_h,min_l,min_h,hour_l,hour_h;
uchar day_l,day_h,month_l,month_h,year_l,year_h;
uchar code tab[]={
0x3F,/*0*/
0x06,/*1*/
0x5B,/*2*/
0x4F,/*3*/
0x66,/*4*/
0x6D,/*5*/
0x7D,/*6*/
0x07,/*7*/
0x7F,/*8*/
0x6F,/*9*/
};
bit flag2;
void DS1302_init();
void keyscan();
void disp();
void delay(uint ms);
void delay(uint ms)
{
uchar i;
while(ms--)
for(i=0;i<123;i++);
}
void main()
{
DS1302_init();
while(1)
{
keyscan();
if(flag==1)
{
flag=2;
DS1302Write(0x80,0x00);//开始振荡
}
if(flag==2)
{
sec=DS1302Read(0x81);
min=DS1302Read(0x83);
hour=DS1302Read(0x85);
day=DS1302Read(0x87);
month=DS1302Read(0x89);
year=DS1302Read(0x8d);
}
}
}
void disp()
{
sec_h=sec/16;
sec_l=sec%16;
min_h=min/16;
min_l=min%16;
hour_h=hour/16;
hour_l=hour%16;
day_h=day/16;
day_l=day%16;
month_h=month/16;
month_l=month%16;
year_h=year/16;
year_l=year%16;
P1_2=0;
if(flag2)
P0=tab[day_l];
else
P0=tab[sec_l];
delay(1);
P1_2=1;
P1_3=0;
if(flag2)
P0=tab[day_h];
else
P0=tab[sec_h];
delay(1);
P1_3=1;
P1_4=0;
if(flag2)
P0=tab[month_l]|0x80;
else
P0=tab[min_l]|0x80;
delay(1);
P1_4=1;
P1_5=0;
if(flag2)
P0=tab[month_h];
else
P0=tab[min_h];
delay(1);
P1_5=1;
P1_6=0;
if(flag2)
P0=tab[year_l]|0x80;
else
P0=tab[hour_l]|0x80;
delay(1);
P1_6=1;
P1_7=0;
if(flag2)
P0=tab[year_h];
else
P0=tab[hour_h];
delay(1);
P1_7=1;
}
void keyscan()
{
disp();
while(!key_start) //开始键
{
disp( );
if(key_start)
flag=1;
}
while(!key_set) //日期/时间键
{
disp( );
if(key_set)
{
flag2=!flag2;
LED=!LED;
}
}
while(!key_y_h) //年/时键
{
disp( );
if(key_y_h)
{
if(flag2)
{
year_l++;
if(year_l==10)
year_l=0;
year=year_l+year_h*16;
DS1302Write(0x8c,year);
}
else
{
hour_l++;
if(hour_l==10)
{
hour_l=0;
hour_h++;
}
if(hour_h==2&&hour_l==4)
{
hour_h=0;
hour_l=0;
}
hour=hour_h*16+hour_l;
DS1302Write(0x84,hour);
}
}
}
while(!key_m_m) //月/分键
{
disp();
if(key_m_m)
{
if(flag2)
{
month_l++;
if(month_l==10)
{
month_l=0;
month_h++;
}
if(month_h==1&&month_l==3)
{
month_l=0;
month_h=0;
}
month=month_l+month_h*16;
DS1302Write(0x88,month);
}
else
{
min_l++;
if(min_l==10)
{
min_l=0;
min_h++;
if(min_h==6)
min_h=0;
}
min=min_l+min_h*16;
DS1302Write(0x82,min);
}
}
}
while(!key_d_s) //日/秒键
{
disp( );
if(key_d_s)
{
if(flag2)
{
day_l++;
if(day_l==10)
{
day_l=0;
day_h++;
}
if(day_h==3&&day_l==2)
{
day_l=0;
day_h=0;
}
day=day_h*16+day_l;
DS1302Write(0x86,day);
}
else
{
sec_l++;
if(sec_l==10)
{
sec_l=0;
sec_h++;
}
if(sec_h==6&&sec_l==0)
sec_h=0;
sec=sec_h*16+sec_l;
DS1302Write(0x80,sec);
}
}
}
}
void DS1302_init()
{
DS1302Write(0x8e,0x00);//允许写
DS1302Write(0x80,0x80);//停止振荡
DS1302Write(0x8c,0x12);
DS1302Write(0x88,0x06);
DS1302Write(0x86,0x15);
DS1302Write(0x84,0x12);
DS1302Write(0x82,0x00);
sec=0;
min=0;
hour=0x12;
day=0x15;
month=0x06;
year=0x12;
}
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