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#include

sbit RS=P2^6;

sbit RW=P2^5;

sbit LCDN=P2^7;

sbit xiang=P1^5;

sbit led=P2^1;

#define GPIO P0

#define uchar unsigned char

#define uint unsigned int

unsigned char date1,aa,ee,k,flag;

unsigned char code table[]="time over";

void lcdwritecom(unsigned char com);

void lcdwritedata(unsigned char dat);

void init();

void ustar();

void sendstring(uchar *p);

void send(uchar ch);

void delay(unsigned int z);

void display(uint date);

void main(void)

{

init();

ES=1;

EA=1;

PS=1;

PT0=0;

PT1=0;

IP=0x10;

while(1)

{

if(ee==14)

{

ee=0;

date1--;

}

if(date1==3)

{

xiang=1;

delay(12);

xiang=0;

delay(12);

}

if(date1==2)

{

xiang=1;

delay(12);

xiang=0;

delay(12);

}

if(date1==1)

{

xiang=1;

delay(12);

xiang=0;

delay(12);

}

if(date1==0)

{

while(1)

{

ustar();

sendstring(table);

while(!TI)

{

TI=0;

}

}

}

lcdwritecom(0x80+7);

display(date1);

}

}

void lcdwritecom(unsigned char com)

{

LCDN=0;

RS=0;

RW=0;

GPIO=com;

delay(10);

LCDN=1;

delay(10);

LCDN=0;

}

void lcdwritedata(unsigned char dat)

{

RS=1;

RW=0;

GPIO=dat;

delay(10);

LCDN=1;

delay(10);

LCDN=0;

}

void init()

{

TMOD=0x01;

TH0=(65536-46080)/256;

TH0=(65536-46080)%256;

EA=1;

ET0=1;

ES=1;

TR0=1;

RW=0;

LCDN=0;

date1=10;

lcdwritecom(0x38);

lcdwritecom(0x0c);

lcdwritecom(0x06);

lcdwritecom(0x01);

lcdwritecom(0x80);

}

void display(uint date)

{

unsigned int ge,shi;

ge=date%10;

shi=date/10;

lcdwritedata(0x30+shi);

lcdwritedata(0x30+ge);

}

void delay(unsigned int z)

{

unsigned char a;

unsigned char b;

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

for(b=100;b>0;b--);

}

void timer0() interrupt 1

{

TH0=(65536-46080)/256;

TH0=(65536-46080)%256;

ee++;

}

void ustar()

{

SCON=0X50;

TMOD=0X20;

PCON=0X80;

TH1=0XF3;

TL1=0XF3;

ES=1;

EA=1;

TR1=1;

}

void send(uchar ch)

{

SBUF=ch;

while(TI==0);

TI=0;

}

void sendstring(uchar *p)

{

while(*p)

{

send(*p);

p++;

}

}

void shou() interrupt 4

{

REN=1;

date1=SBUF;

if(RI)

{

RI=0;

led=0;

ET0=1;

}

}

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