#单片机#歌曲——世上只有妈妈

#define uchar unsigned char

#define uint unsigned int

sbit k3=P3^5;

sbit sound=P0^4;

bit FY=0; //放乐曲时FY=1, 电子琴弹奏时FY=0

uchar Song_Index=0,Tone_Index=0; //放音乐的参数

uchar k, key,flag;

uchar code DSY_CODE[]= {0xc0,0xf9,0xa4,0xb0,

0x99,0x92,0x82,0xf8,

0x80,0x90,0x88,0x83,

0xc6,0xa1,0x86,0x8e};

uchar code Song[]= //世上只有妈妈好的旋律

{13,12,10,12,15,13,12,13,10,12,13,12,10,8,1,12,10,9,9,10,12,12,13,10,9,8,12,10,9,8,6,8,5,-1};

char code Len[]= //旋律每个音符对应

{3,1,2,2,2,1,1,4,2,1,1,2,2,1,1,1,1,4,3,1,2,1,1,2,2,4,3,1,1,1,1,1,6,-1};

uint code tab[]= {0,63628,63835,64021,64103,64260,64400,64524, //0,低1，低2，低3，低4，低5，低6，

64580,64684,64777,64820,64898,64968,65030, //中1，中2，中3，中4，中5，中6，中7

65058,65110,65157,65178,65217,65252,65283 }; //高1，高2，高3，高4，高5，高6，高7

void delay(uint z)

{

uint x,y;

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

for(y=114;y>0;y--);

}

void main()

{

TMOD=0x01;//设置定时器0工作方式1

TH0=(tab[0])/256;

TL0=(tab[0])%6;//赋初值

EA=1;//开总中断

ET0=1;//开定时器中断0

P2=0X00;

while(1)

{

Tone_Index=0;

while(Song[Tone_Index]!=-1)

{

P0=DSY_CODE;

TH0=(tab[Song[Tone_Index]])/256;

TL0=(tab[Song[Tone_Index]])%6;

TR0 = 1;

delay(250*Len[Tone_Index]);

Tone_Index ;

TR0=0;

}

}

}

void timer0() interrupt 1

{

TH0=(tab[Song[Tone_Index]])/256;

TL0=(tab[Song[Tone_Index]])%6;

sound=!sound;

}