/********本程序中，FOSC=11.0592M*********/

#include

#include

#define uchar unsigned char

#define uint  unsigned int

struct music_type{

uchar tone;

uchar delay;

};

/**********F调3个8度7音阶的音高参数**********/

uint code tonetab[]={

64216,64360,64489,64603,64654,64752,64837, //低音1~7

64876,64948,65012,65042,65095,65144,65186, //中音1~7

65206,65242,65274,65289,65315,65340,65361  //高音1~7

};

//曲谱，每个音符含两项数据，第1项为音高，第2项为节拍(以1/4拍为单位)

/**************康定情歌乐谱***************/

struct music_type code  songtab[]={

3+7,0x02,5+7,0x02,6+7,0x02,6+7,0x01,5+7,0x01,6+7,0x03,3+7,0x01,2+7,0x04,

3+7,0x02,5+7,0x02,6+7,0x02,6+7,0x01,5+7,0x01,6+7,0x03,3+7,0x06,

3+7,0x02,5+7,0x02,6+7,0x02,6+7,0x01,5+7,0x01,6+7,0x03,3+7,0x01,2+7,0x04,

5+7,0x02,3+7,0x02,2+7,0x01,3+7,0x01,2+7,0x01,1+7,0x01,2+7,0x02,6+0,0x06,

6+0,0x02,2+7,0x06,5+7,0x02,3+7,0x06,2+7,0x01,1+7,0x01,6+0,0x06,

5+7,0x02,3+7,0x02,2+7,0x01,3+7,0x01,2+7,0x01,1+7,0x01,2+7,0x02,6+0,0x06,

//

3+7,0x01,2+7,0x01,3+7,0x01,5+7,0x01,6+7,0x01,5+7,0x01,1+14,0x01,6+7,0x01,

5+7,0x01,3+7,0x01,5+7,0x04,6+7,0x02,

1+14,0x02,2+14,0x01,3+14,0x01,2+14,0x01,1+14,0x01,6+7,0x01,1+14,0x01,

5+7,0x08,

5+7,0x01,3+7,0x01,5+7,0x04,6+7,0x02,

1+14,0x02,2+14,0x01,3+14,0x01,1+14,0x01,6+7,0x01,5+7,0x02,

5+7,0x02,2+7,0x02,3+7,0x01,5+7,0x01,3+7,0x01,2+7,0x01,

1+7,0x01,6,0x01,1+7,0x06,

3+7,0x01,2+7,0x01,1+7,0x02,2+7,0x03,3+7,0x01,

5+7,0x02,6+7,0x01,1+14,0x01,6+7,0x02,5+7,0x02,

5+7,0x01,3+7,0x01,2+7,0x02,3+7,0x01,5+7,0x01,3+7,0x01,2+7,0x01,

1+7,0x01,2+7,0x01,6,0x04,1+7,0x02,

2+7,0x03,3+7,0x01,1+7,0x01,2+7,0x01,1+7,0x02,6,0x01,

1+7,0x01,6,0x01,5,0x05,

//

3+7,0x01,2+7,0x01,3+7,0x01,5+7,0x01,6+7,0x01,5+7,0x01,1+14,0x01,6+7,0x01,

5+7,0x01,3+7,0x01,5+7,0x04,6+7,0x02,

1+14,0x02,2+14,0x01,3+14,0x01,2+14,0x01,1+14,0x01,6+7,0x01,1+14,0x01,

5+7,0x08,

5+7,0x01,3+7,0x01,5+7,0x04,6+7,0x02,

1+14,0x02,2+14,0x01,3+14,0x01,1+14,0x01,6+7,0x01,5+7,0x02,

5+7,0x02,2+7,0x02,3+7,0x01,5+7,0x01,3+7,0x01,2+7,0x01,

1+7,0x01,6,0x01,1+7,0x06,

3+7,0x01,2+7,0x01,1+7,0x02,2+7,0x03,3+7,0x01,

5+7,0x02,6+7,0x01,1+14,0x01,6+7,0x02,5+7,0x02,

5+7,0x01,3+7,0x01,2+7,0x02,3+7,0x01,5+7,0x01,3+7,0x01,2+7,0x01,

1+7,0x01,2+7,0x01,6,0x04,1+7,0x02,

2+7,0x03,3+7,0x01,1+7,0x01,2+7,0x01,1+7,0x02,6,0x01,

1+7,0x01,6,0x01,5,0x05,

0,0x00

};

/*********端口及变量定义**********/

sbit SPEAKER = P3^7;

uchar tlow1,thig1;

/*******软件延时,约n*10us******/

void delay10us(unsigned char n){

do{

_nop_();

_nop_();

_nop_();

_nop_();

_nop_();

}while(--n);

}

/*******软件延时,约n ms******/

void delayms(unsigned int n){

do {

delay10us(131);

}while(--n);

}

main () {

uchar i,j;

EA=1;ET0=1;

TMOD=0X01;

while(1){

i=0;

while(songtab[i].delay!=0){

if(songtab[i].tone==0)TR0=0;  //音高数据为0

else{     //音高数据不为0

//用定时器参数控制T1的振荡频率，即音高

thig1=TH0=tonetab[songtab[i].tone-1]/256;

tlow1=TL0=tonetab[songtab[i].tone-1]%256;

TR0=1;

}

//控制音符的持续时间，即节拍

for(j=0;j

delayms(200);

}

i++; //下一个音符

}

TR0=0;  //停止演奏

delayms(1000);  //一遍完成后等待

}

}

/*******定时器1中断，控制蜂鸣器发声频率*******/

void  t0 () interrupt 1{

TH0=thig1;TL0=tlow1;

SPEAKER = !SPEAKER;  //蜂鸣器发声

}