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#include<reg51.h>

#include<intrins.h>

#defineucharunsignedchar

#defineuintunsignedint

sbitBEEP=PM7;

sbitSDA=P1A0;

sbitCLK=PM1；

sbitP12=P1A2;

sbitP13=P1A3;

uintflag,tO,n;

ucharm,q;

codeucharTable[8]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80};0epx{¡f>y:

epcn

Code

[music]={0xfbef,0xfbef,0xfd4b,0xfd4b,0xfd98,0xfd98,0xfd4b,0,0,0,0xfcf6,0xfcf6,0xfcc7,0xfcc7,0xfc62,0xfc62,0xfbef,0,0,0,0xfd4b,0xfd4b,0xfcf6,0xfcf6,0xfcc7,0xfcc7,0xfc

62,0,0,0,0xfd4b,0,0};0NPŒ1

Codeuint

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freq[21]={0xefa9,0xf173,0xf307,0xf3c8,0xf51e,0xf64c,0xf75a,0xf7d8,0xf8bd,0xf987,

0xf9e4,0xfa90,0xfb29,0xfbb1,0xfbef,0xfc62,0xfcc7,0xfcf6,0xfd4b,0xfd98,0xfddc};

0ONN-šØ—óv„˜‘s‡

voiddelay()

{

uinti;

for(i=0;i<5000;i++);

}

timer0()interrupt1

{

TH0=t0/256;

TL0=t0%256;

BEEP=~BEEP;

}

//^öeöQýep

//SÑXðQýep

timer1()interrupt3

{

n++;

TH1=0xd8;0[šeö50010*50=500

TL1=0xf0;065536-10ms/1us=55536--->0xd8fo

if(n==50)

{n=0;

q++;

TR0=0;

TR1=0;

}

}

voidsend(uchara)//N2^v•lcbQýep

{

ucharj;

for(j=0;j<8;j++)

{

if(_crol_(a,j)&0x80)

SDA=1;

elseSDA=0;

CLK=0;

CLK=1;

}

voidmain(void)

{

//N;Qýep

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ucharkey8_count,com,i,a,j;key8_count=0;

n=0;

TMOD=0x11;

//[šeö/‹¡epVh0TŒ[šeö/‹¡epVh1]åO\Ne¹_1

EA=1;

//cpu_N-e-

ET0=1;

0[šeö/‹¡epVh0_N-e-

ET1=1;

0[šeö/‹¡epVh1_N-e-

TH1=0xd8;

//65536-10000=55536->0xd8f0

TL1=0xf0;

//th1=0xd8

TR0=0;

TRNÁ0;

//thl=0xf0

BEEP=1;

q=0；

m=0;

while(1)

{

//kLfò•êR¨_ªs¯d-e>if(q>=33){

q=1;m=0;

}

0•êR¨d-e>—óNPif(key8_count==3&&q>m){t0=music[m++];

if(t0==0){delay();q++;

}else{TH0=t0/256;TL0=t0%256;TH1=0xd8;TL1=0xf0;TR0=1;TR1=1;

}

}else

{

delay();

flag=0;

//_ë•bkcÏ

a=0x00;

P13=1;

send(a);

if(P12==0)

{

m=q=0;

com=0xfe;

for(i=0;i<8;i++)

{

P13=1;

send(com);

if(P12==0){

flag=1;

P13=1;

send(Table[i]);delay();

P13=0;break;

}elsecom=_crol_(com,1);

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}NN

if(flag==1)

{

for(j=0;j<5;j++){delay();

}

TR1=0;

TR0=0;

if(i==7)

{key8_count++;key8_count=key8_count%4;//u1~‘s‡R$e-c..—6bed-e>kLfδ

if(key8_count==3)

{_

q++;

}

}

else

{

switch(key8_count)

{

case0:t0=freq[i];

TH0=t0/256;

TL0=t0%256;

TH1=0xd8;

TL1=OxfO;

TR1=1;

TR0=1;break;

case1:t0=freq[i+7];

TH0=t0/256;

TL0=t0%256;

TH1=0xd8;

TL1=0xf0;

TR1=1;

TR0=1;break;

case2:t0=freq[i+14];

TH0=t0/256;

TL0=t0%256;

TH1=0xd8;

TL1=0xf0;

TR1=1;

TR0=1;break;

case3:q++;break;

}

}

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}

}

}

}

}

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