#include <reg51.h>
sbit mic=P2^1;  //定义喇叭接口
bit flag;  //定义标志位
unsigned char i;  //定义变量
unsigned char song[]=
{
1,1,2,1,4,3,1,1,2,1,5,4,
1,1,8,6,4,3,2,2,7,7,6,4,5,4,15
};  //定义生日歌歌谱
int tone[]=
{
1012,903,852,759,716,638,568,506,478,426,379
};  //定义简谱音调
unsigned char beat[]=
{
60,10,40,40,40,80,60,10,40,40,40,80,
60,10,40,40,40,40,40,60,10,40,40,40,80
};  //定义节拍
unsigned char beath=(65536-50000)/256;
unsigned char beatl=(65536-50000)%256;  //定义节拍变量
unsigned char time,j,k;
int toneh,tonel;
void main()
{ //IE=0x8a;
mic=0;
i=0;
time=30;
TMOD=1; //定义计时器工作方式
EA=1;      //开总中断
while(song[i]!=15)
{
  toneh=(65536-tone[song[i]])/256;
  tonel=(65536-tone[song[i]])%256;
  TH0=toneh;
  TL0=tonel;
  ET0=1;
  ET1=1;
  TR0=1;
  //for(j=150;j>0;j--)
  // for(k=200;k>0;k--);
  time=beat[i];
  TH1=(65536-50000)/256;
  TL1=(65536-50000)%256;
  flag=0;
  TR1=1;
  while(flag==0);
  i++;
}
}
void time0() interrupt 1
{
TH0=toneh;
TL0=tonel;
mic=~mic;
}
void time1() interrupt 3
{
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
if(--time==0)
{
  flag=1;
  TR1=0;
}
}

*博客内容为网友个人发布，仅代表博主个人观点，如有侵权请联系工作人员删除。