51定时器和lcd12864做的实时时钟显示(附图)

#include

#include"intrins.h"

#define uchar unsigned char

#define uint unsigned int

sbit rs=P1^0;

sbit rw=P1^1;

sbit e=P2^5;

sbit psb=P1^2;

sbit rst=P1^4;

uchar hour,fen,miao,num;

uchar code table[]="时间:";

uchar sbuf[]={0,0,0,0,0,0};

void delay(uint x)

{

uchar i,j;

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

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

}

void Timer0Init(void) //50??@11.0592MHz {

TMOD |= 0x01; //???????

TL0 = 0x00; //??????

TH0 = 0x4C; //??????

EA=1;

ET0=1;

TR0=1; //???0????

}

void Delay2ms() //@11.0592MHz {

unsigned char i, j;

_nop_();

i = 4;

j = 146;

do

{

while (--j);

} while (--i);

}

void Delay100us() //@11.0592MHz {

unsigned char i, j;

i = 2;

j = 109;

do

{

while (--j);

} while (--i);

void Delay50ms() //@11.0592MHz {

unsigned char i, j, k;

i = 3;

j = 207;

k = 28;

do

{

do

{

while (--k);

} while (--j);

} while (--i);

}

void write_12864com(uchar com)

{

rs=0;

rw=0;

Delay100us();

P0=com;

e=1;

Delay100us();

e=0;

Delay100us();

}

void write_12864dat(uchar dat) {

rs=1;

rw=0;

Delay100us();

P0=dat;

e=1;

Delay100us();

e=0;

Delay100us();

}

void init_lcd12864()

{

Delay50ms();

rst=1;

write_12864com(0x30);

Delay100us();

write_12864com(0x30);

Delay100us();

write_12864com(0x0c);

Delay100us();

write_12864com(0x01);

Delay50ms();

write_12864com(0x06);

Delay100us();

}

void displayshijiangeshi()

{

uchar i;

while(table[i]!='\0')

{

write_12864dat(table[i]);

Delay100us();

i++;

}

}

void saomiaoshijian()

{

uchar i;

write_12864com(0x83);

Delay100us();

for(i=0;i<2;i++)

{

write_12864dat(sbuf[i]+0x30);

Delay100us();

}

write_12864dat(0x3a);

Delay100us();

for(i=2;i<4;i++)

{

write_12864dat(sbuf[i]+0x30);

Delay100us();

}

write_12864dat(0x3a);

Delay100us();

for(i=4;i<6;i++)

{

write_12864dat(sbuf[i]+0x30);

Delay100us();

}

}

void main()

{

init_lcd12864();

displayshijiangeshi();

Delay2ms(); //@11.0592MHz

Timer0Init();

while(1)

{

saomiaoshijian();

}

}

void timer0() interrupt 1

{

TL0 = 0x00; //??????

TH0 = 0x4C;

num++;

if(num==20)

{

num=0;

miao++;

}

if(miao==60)

{

miao=0;

fen++;

}

if(fen==60)

{

fen=0;

hour++;

if(hour==24)

{

hour=0;

}

}

sbuf[5]=miao%10;

sbuf[4]=miao/10;

sbuf[3]=fen%10;

sbuf[2]=fen/10;

sbuf[1]=hour%10;

sbuf[0]=hour/10;

}