用定时器设计时钟并在1602液晶上显示

#include

#define uint unsigned int

#define uchar unsigned char

sbit lcden=P3^4;

sbit lcdrs=P3^5;

sbit wela=P2^7;

sbit dula=P2^6;

/****分解出的独立按键****/

sbit s1=P3^0; //进入调时间状态

sbit s2=P3^1; //数值增大

sbit s3=P3^2; //数值减少

sbit s4=P3^3; //进入设置闹钟状态

sbit rd=P3^7;

uint a,shi,fen,miao,ri,yue,nian,num,i,j,q,shi1,fen1,miao1,num1;

uchar temp;

uchar code table[]="2012";

/*****显示星期*****/

uchar code table1[][4]={"Mon ","Tues","Wed ","Thur","Fri ","Sat ","Sun "}; /*****延时1ms*****/

void delay(uint z)

{

uint x,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

/**********

1602初始化

**********/

void write_com(uchar com) //写命令

{

lcdrs=0;

P0=com;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void write_data(uchar date) //写数据

{

lcdrs=1;

P0=date;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void init_1602() //初始化

{

// lcdwr=0;

dula=0; //关断选、位选

wela=0;

lcden=0;

write_com(0x38);

write_com(0x0c);

write_com(0x06);

write_com(0x01);

write_com(0x80+0x04);

write_data(':');

write_com(0x80+0x07);

write_data(':');

write_com(0x80+0x40);

for(i=0;i<4;i++)

write_data(table[i]);

write_com(0x80+0x44);

write_data('.');

write_com(0x80+0x47);

write_data('.');

}

/************

1602显示时间

************/

void write_sfm() //显示时分秒

{

write_com(0x80+0x02);

write_data(0x30+shi/10);

write_com(0x80+0x03);

write_data(0x30+shi%10);

write_com(0x80+0x05);

write_data(0x30+fen/10);

write_com(0x80+0x06);

write_data(0x30+fen%10);

write_com(0x80+0x08);

write_data(0x30+miao/10);

write_com(0x80+0x09);

write_data(0x30+miao%10);

/*****当显示小时的数小于13，显示AM*****/ if(shi<13)

{

write_com(0x80+0x0c);

write_data('A');

write_com(0x80+0x0d);

write_data('M');

}

/*****显示PM*****/

if(shi>12)

{

write_com(0x80+0x0c);

write_data('P');

write_com(0x80+0x0d);

write_data('M');

}

/*显示月日*/

write_com(0x80+0x45);

write_data(0x30+yue/10);

write_com(0x80+0x46);

write_data(0x30+yue%10);

write_com(0x80+0x48);

write_data(0x30+ri/10);

write_com(0x80+0x49);

write_data(0x30+ri%10);

/*显示星期*/

write_com(0x80+0x4c);

write_data(table1[q][0]);

write_com(0x80+0x4d);

write_data(table1[q][1]);

write_com(0x80+0x4e);

write_data(table1[q][2]);

write_com(0x80+0x4f);

write_data(table1[q][3]);

}

void write_sfm1()

{

write_com(0x80+0x02);

write_data(0x30+shi1/10);

write_com(0x80+0x03);

write_data(0x30+shi1%10);

write_com(0x80+0x05);

write_data(0x30+fen1/10);

write_com(0x80+0x06);

write_data(0x30+fen1%10);

write_com(0x80+0x08);

write_data(0x30+miao1/10);