生日快乐歌单片机C语言程序

快乐读书法 2016-04-26

展开全文

#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit BEEP=P2^3;//接喇叭或蜂鸣器的接口
uint h,i;
uint hz;
uchar jiep;
bit flag;
uint code fre[]={ 64400,64524,64580,64684,64777,64820,64898,64968,65030,65058,65110,65157,65178,65217};
uchar code song[]={6,9, 6,3, 7,12, 6,12, 9,12, 8,24, 6,9, 6,3, 7,12,
6,12, 10,12, 9,24, 6,9, 6,3, 13,12, 11,12, 8,12, 7,12,
12,9, 12,3, 11,12, 9,12, 10,12, 9,24}; //歌谱 2个一组(0,0)(音调,节拍)

void init () //初始化
{
      EA=1;
      TMOD=0x11;
      ET0=1;
      ET1=1;
      i=0;
      flag=1;
}

void sing()
{
      if(flag==1)
      {
      h=song;
      jiep=song[i+1];
      i=i+2;
      if(i>46)
            i=0;
      hz=fre[h];
      TH0=(hz)/256;
      TL0=(hz)%256;
      flag=0;
      TR0=1;
      TR1=1;
      }
}

void main()
{
      init();
      while(1)
      {
      sing();
      }
}

void time0() interrupt 1 //定时器0
{
      TH0=(hz)/256;
      TL0=(hz)%256;
      if(!flag)
            BEEP=!BEEP;
      else
            TR0=0;
}

void time1() interrupt 3
{
      TH1=(15536)/256;
      TL1=(15536)%256;
      --jiep;
      if(jiep==0)
      flag=1;
}