单片机LCD1602显示年月日时钟带星期和闹钟

长春工业大学

测控技术与仪器专业

单片机LCD1602显示年月日时钟带星期和闹钟，可识别闰年

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#include

#define uchar unsigned char

#define uint unsigned int

sbit lcdrs = P0^7;//液晶引脚定义

sbit led_cs = P0^6;

sbit lcden = P0^5;

sbit boom = P3^6;

sbit key1 = P3^5;

sbit key2 = P3^4;

sbit key3 = P3^3;

sbit keyE = P3^2;

uchar

num,key1num,key2num,count,hour,min,sec,day,mon,year,shi,fen,miao ,week;

char ye1,ye2;

uchar code cg_1602[]={ 0x08,0x0f,0x12,0x0f,0x0a,0x1f,0x02,0x02,

0x0f,0x09,0x0f,0x09,0x0f,0x09,0x11,0x00,

0x0f,0x09,0x09,0x0f,0x09,0x09,0x0f,0x00,

0x08,0x0f,0x12,0x0f,0x0a,0x1f,0x02,0x02,};//"年月日"

/*延时函数*/

void delay(uint xms)

{

uint i,j;

for(i=xms;i>0;i--)

for(j=114;j>0;j--);

}

/*1602液晶*/

void write_com(uchar com)//写命令{

lcdrs=0;

lcden=0;

P2=com;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void write_data(uchar date)//写数据{

lcdrs=1;

lcden=0;

P2=date;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void write_by_xy(uchar x,uchar y)//坐标定位

{

uchar address;

if(y==0)

address=0x80+x;//y=0,写第一行

else

address=0xc0+x;//y=1,写第二行

write_com(address);

}

/*void write_char(uchar x,uchar y,uchar date)//坐标定位显示{

write_by_xy(x,y);//先定位

write_data(date);//后写数

}*/

void write_string(uchar x,uchar y,uchar *s)//写字符串

{

write_by_xy(x,y);//设定显示位置

while(*s)//write character

{

P2=*s;

write_data(*s);

}

}

void write_sfm(uchar add,uchar date)//写时分秒函数

{

uchar hour,ge;

hour=date/10;//分解一个2位数的十位和个位

ge=date%10;

write_com(0x80+add);//设置显示位置

write_data(0x30+hour);//送去液晶显示十位

write_data(0x30+ge); //送去液晶显示个位

}

void write_cg()//写入固定汉字和符号

{

write_com(0x40); //设定CGRAM地址

for(num=0;num<24;num++) //将自定义字型码写入CGRAM中{

write_data(cg_1602[num]);

}

write_com(0xc4);//年

{

write_data(0);

write_com(0xc7);//月

{

write_data(1);

}

write_com(0xca);//日

{

write_data(2);

}

write_string(2,0,":");

write_string(5,0,":");

write_string(0x0a,0,":");

write_string(0x0d,0,":");

write_string(0x0c,1,"W");

write_string(0x0d,1,"K");

}

void init_1602()//初始化

{

led_cs=0;

hour=23;min=59;sec=55;key1num=0;count=0;day=28;mon=2;ye1=2 0;ye2=13;year=ye1*100+ye2;boom=0;shi=0;fen=0;miao=0;week=7;

write_com(0x38);