#include<reg51.h>
#include<intrins.h>
#include <string.h>
/*================================
自定义类型名
================================*/
typedef unsigned char uchar;
typedef unsigned int uint;
#define sec timer[0]
#define min timer[1]
#define hour timer[2]
#define day timer[3]
#define month timer[4]
#define week timer[5]
#define year timer[6]
uchar time[7] = {0x55, 0x55, 0x15, 0x19, 0x12, 2, 0x17} ;
uchar *week[7][3] =
{
"Sun",
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat"
};
uchar date_str[] = "DATE / / ";
uchar time_str[] = "TIME : : ";
/*================================
硬件接口位声明
================================*/
sbit TSCLK =P1^0;//时钟线，接到P10上
sbit TIO =P1^1; //数据线，接到P11上
sbit TRST =P1^2; //使能端，接到P12上
//定义1602与单片机的接口
sbit RS =P3^5; //指令数据选择
sbit RW =P3^6; //接地，执行写操作
sbit EN =P3^4; //信号使能
//延时函数
void Delay100ms(uchar k) //@12.000MHz
{
unsigned char i, j;
while (k--)
{
i = 195;
j = 138;
do
{
while (--j)
;
} while (--i);
}
}
//写DS1302数据
void Write_DS1302(uchar cmd,uchar dat)
{
uchar i;
TRST=0;
TSCLK=1;
TRST=1;
for(i=0;i<8;i++)
{
TSCLK=0;
TIO=cmd&0x01;
TSCLK=1;
cmd>>=1;
}
for(i=0;i<8;i++)
{
TSCLK=0;
TIO=dat&0x01;
TSCLK=1;
dat>>=1;
}
}
//读DS1302数据
uchar Read_DS1302(uchar cmd)
{
uchar dat,i;
TRST=0;
TSCLK=1;
TRST=1;
for(i=0;i<8;i++)
{
TSCLK=0;
TIO=cmd&0x01;
TSCLK=1;
cmd>>=1;
}
for(i=0;i<8;i++)
{
TSCLK=0;
dat >>=1;
if(TIO)dat|=0x80;
TSCLK = 1;
}
return 0;
}
//数据转BCD码
uchar Dat_Chg_BCD(uchar dat)
{
uchar dat1 , dat2;
dat1 = dat / 10;
dat2 = dat % 10;
dat2 = dat2 + dat1 * 16;
return dat2;
}
//BCD码转换为数据
uchar BCD_Chg_Dat(uchar dat)
{
uchar dat1, dat2;
dat1 = dat / 16;
dat2 = dat % 16;
dat2 = dat2+ dat1 * 10;
return dat2;
}
/*************读出LCD状态*************/
uchar Read_LCD_State()
{
uchar state;
RS=0;RW=1;EN=1;Delay100ms(1);
state=P0;
EN=0;Delay100ms(1);
return state;
}
/***********LCD忙检测*****************/
void LCD_Busy_Wait()
{
while((Read_LCD_State()&0x80)==0x80);//读取忙标志位BF,BF=1则一直等待
Delay100ms(1);
}
/**************向LCD写数据*******************/
void Write_1602_Data(uchar dat)
{
LCD_Busy_Wait();
EN=0;
RS=1;
RW=0;
P0=dat;
EN=1;
Delay100ms(1);
EN=0;;
}
/**************向LCD写命令*******************/
void Write_1602_Command(uchar cmd)
{
LCD_Busy_Wait();
EN=0;
RS=0;
RW=0;
P0=cmd;
EN=1;
Delay100ms(1);
EN=0;
}
/*****************初始化LCD函数*****************/
void Init_LCD()
{
Write_1602_Command(0X38);//8位数据接口，2行显示，5*7点阵
Write_1602_Command(0X0c);//开显示，关光标和闪烁
Write_1602_Command(0X06);//数据读写操作画面不动，写一个指针加1
Write_1602_Command(0X01);//清屏
Write_1602_Command(0x80);//设置数据指针起点
}
void Display_1602_String(uchar p,uchar*s)
{
uchar i;
Write_1602_Command(p|0x80);
for(i=0;i<16;i++)
{
Write_1602_Data(s[i]);
Delay100ms(1);
}
}
/*****************格式化日期时间函数*****************/
void Format_DateTime(uchar d,uchar *a)
{
a[0]=d/10+'0';
a[1]=d%10+'0';
}
/*****************主函数*****************/
void main()
{
Write_DS1302(0x8e,0);
Write_DS1302(0x80,Dat_Chg_BCD(30)); //30s
Write_DS1302(0x82,Dat_Chg_BCD(15)); //15min
Write_DS1302(0x84,Dat_Chg_BCD(19)); //19h
Write_DS1302(0x86,Dat_Chg_BCD(30)); //30号
Write_DS1302(0x88,Dat_Chg_BCD(7)); //7月
Write_DS1302(0x8C,Dat_Chg_BCD(19)); //19年
Write_DS1302(0x8e,0x80);
while(1)
{
Write_DS1302(0x8e,0); //清除写保护
time[0] = BCD_Chg_Dat(Read_DS1302(0x81)); //读秒寄存器
time[1] = BCD_Chg_Dat(Read_DS1302(0x83)); //读分寄存器
time[2] = BCD_Chg_Dat(Read_DS1302(0x85));//读时寄存器
time[3] = BCD_Chg_Dat(Read_DS1302(0x87)); //读日寄存器
time[4] = BCD_Chg_Dat(Read_DS1302(0x89));//读月寄存器
time[5] = BCD_Chg_Dat(Read_DS1302(0x8B));//读星期寄存器
time[6] = BCD_Chg_Dat(Read_DS1302(0x8D));//读年寄存器
Write_DS1302(0x8e,0x80); //开写保护
Init_LCD();
Format_DateTime(time[6],date_str+5);
Format_DateTime(time[4],date_str+8);
Format_DateTime(time[3],date_str+11);
strcpy(date_str+11,week[time[5]]);
Format_DateTime(time[2],time_str+5);
Format_DateTime(time[1],time_str+8);
Format_DateTime(time[0],time_str+11);
Display_1602_String(0X00,date_str);
Display_1602_String(0X40,time_str);
}
}
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