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標題: 51單片機電子琴程序 [打印本頁]

作者: qq喂喂喂w 時間: 2017-11-23 10:38
標題: 51單片機電子琴程序
#include <reg52.h>
sbit BUZZ=P1^6;//蜂鳴器連續的IO口
unsigned char T1TH=0,T1TL=0;
unsigned char code song1[]={                //兩只老虎
0x14,0x14,0x24,0x34,0x14,0x14,0x24,0x34,0x14,
      0x34,0x44,0x58,0x34,0x44,0x58,
      0x53,0x61,0x53,0x41,0x34,0x14,
      0x53,0x61,0x53,0x41,0x34,0x14,
      0x14,0x54,0x18,
      0x14,0x54,0x18,
      0xFF       //歌曲結束標志
};
unsigned char code song2[]={                //送別
0x54,0x54,0x32,0x52,0x88,0x64,0x84,0x58,
      0x54,0x12,0x22,0x34,0x22,0x12,0x28,0x04,0x04,
      0x54,0x32,0x52,0x86,0x72,0x64,0x84,0x58,
      0x54,0x22,0x32,0x46,0xB2,0x18,0x04,0x04,
      0x64,0x84,0x88,0x74,0x62,0x72,0x88,
      0x62,0x72,0x82,0x62,0x62,0x52,0x32,0x12,0x28,0x04,0x04,
      0x54,0x32,0x52,0x86,0x72,0x64,0x84,0x58,
      0x54,0x22,0x32,0x46,0xB2,0x18,0x04,0x04,
      0xFF
};
unsigned char code cuzhi[]={
0xFF,0xFF,             //                         low             mid          high
      0xFC,0x44,             //1    ##  5 6 7  1 2 3 4 5 6 7  1 2 3
      0xFC,0xAC,             //2                ##       D C B  1 2 3 4 5 6 7  8 9 A
      0xFD,0x09,             //3
      0xFD,0x34,             //4
      0xFD,0x82,             //5
      0xFD,0xC8,             //6
      0xFE,0x06,             //7
      0xFE,0x2A,             //8 --high 1       N = 470;
      0xFE,0x48,             //9 --hign 2       N = 440;
      0xFE,0x66,    //A --hign 3       N = 410;
      0xFC,0x0C             //B---low  7       N = 1012
};
void delay1ms(unsigned char z);       //延時1MS
void delay125ms(unsigned char z);       //延時165MS,即十六分音符
void sing();
main()
{
      EA=1;//開總中斷
TMOD=0x10;//定時器1工作在方式1
      TH1=0;
      TL1=0;
      ET1=1;
      while(1)
      {
            sing();
         delay1ms(1000);
      }
}

void sing()
{
unsigned char temp;
      unsigned char jianpu;
      unsigned int i = 0;
      static unsigned char thesong = 0;
      while(1)
      {
            switch(thesong)
            {
               case 0:temp = song1[i];break;
               case 1:temp = song2[i];break;
               default:break;
            }
            if(temp == 0xFF)
               break;
            jianpu = (temp>>4); //取數的高4位
            if(jianpu != 0)             //不是休止符
            {
               T1TH = cuzhi[jianpu*2];
               T1TL = cuzhi[jianpu*2+1];
            }             //查表找初值
            else                      //jp = 0,休止符
               { TR1 = 0;BUZZ = 1; }       //關蜂鳴器
            delay125ms( temp & 0x0F ); //取數的低4位
            TR1 = 0;       //唱完一個音停10MS
            BUZZ = 1;
            delay1ms(10);
            TR1 = 1;
            i++;
      }
      TR1 = 0;
      BUZZ = 1;
      thesong++;
      if(thesong >=2)
         thesong = 0;
}
void delay125ms(unsigned char z)       //延時165MS,即十六分音符
{
unsigned int x,y;
      for(x=z;x>0;x--)
               for(y=15000;y>0;y--);
}

void delay1ms(unsigned char z)       //延時1MS
{
unsigned int x,y;
      for(x=z;x>0;x--)
               for(y=112;y>0;y--);
}
void timer1() interrupt 3       //用于產生各種音調
{
      TH1=T1TH;
      TL1=T1TL;
BUZZ = ~BUZZ;
}

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