当前位置：首页 > article >正文

51单片机-蜂鸣器制作音乐（小星星天空之城）

article 2024/9/21 20:51:25

#include <REGX52.H>
#include "Delay.h"
#include "Timer0.h"

//蜂鸣器端口定义
sbit Buzzer=P1^5;

//播放速度，值为四分音符的时长(ms)
#define SPEED 500

//音符与索引对应表，P：休止符，L：低音，M：中音，H：高音，下划线：升半音符号#
#define P   0
#define L1   1
#define L1_   2
#define L2   3
#define L2_   4
#define L3   5
#define L4   6
#define L4_   7
#define L5   8
#define L5_   9
#define L6   10
#define L6_   11
#define L7   12
#define M1   13
#define M1_   14
#define M2   15
#define M2_   16
#define M3   17
#define M4   18
#define M4_   19
#define M5   20
#define M5_   21
#define M6   22
#define M6_   23
#define M7   24
#define H1   25
#define H1_   26
#define H2   27
#define H2_   28
#define H3   29
#define H4   30
#define H4_   31
#define H5   32
#define H5_   33
#define H6   34
#define H6_   35
#define H7   36

//索引与频率对照表
unsigned int FreqTable[]={
   0,
   63628,63731,63835,63928,64021,64103,64185,64260,64331,64400,64463,64528,
   64580,64633,64684,64732,64777,64820,64860,64898,64934,64968,65000,65030,
   65058,65085,65110,65134,65157,65178,65198,65217,65235,65252,65268,65283,
};

//乐谱
unsigned char code Music[]={
   //音符,时值,

   //1
   P,   4,
   P,   4,
   P,   4,
   M6,   2,
   M7,   2,

   H1,   4+2,
   M7,   2,
   H1,   4,
   H3,   4,

   M7,   4+4+4,
   M3,   2,
   M3,   2,

   //2
   M6,   4+2,
   M5,   2,
   M6, 4,
   H1,   4,

   M5,   4+4+4,
   M3,   4,

   M4,   4+2,
   M3,   2,
   M4,   4,
   H1,   4,

   //3
   M3,   4+4,
   P,   2,
   H1,   2,
   H1,   2,
   H1,   2,

   M7,   4+2,
   M4_,2,
   M4_,4,
   M7,   4,

   M7,   8,
   P,   4,
   M6,   2,
   M7,   2,

   //4
   H1,   4+2,
   M7,   2,
   H1,   4,
   H3,   4,

   M7,   4+4+4,
   M3,   2,
   M3,   2,

   M6,   4+2,
   M5,   2,
   M6, 4,
   H1,   4,

   //5
   M5,   4+4+4,
   M2,   2,
   M3,   2,

   M4,   4,
   H1,   2,
   M7,   2+2,
   H1,   2+4,

   H2,   2,
   H2,   2,
   H3,   2,
   H1,   2+4+4,

   //6
   H1,   2,
   M7,   2,
   M6,   2,
   M6,   2,
   M7,   4,
   M5_,4,


   M6,   4+4+4,
   H1,   2,
   H2,   2,

   H3,   4+2,
   H2,   2,
   H3,   4,
   H5,   4,

   //7
   H2,   4+4+4,
   M5,   2,
   M5,   2,

   H1,   4+2,
   M7,   2,
   H1,   4,
   H3,   4,

   H3,   4+4+4+4,

   //8
   M6,   2,
   M7,   2,
   H1,   4,
   M7,   4,
   H2,   2,
   H2,   2,

   H1,   4+2,
   M5,   2+4+4,

   H4,   4,
   H3,   4,
   H3,   4,
   H1,   4,

   //9
   H3,   4+4+4,
   H3,   4,

   H6,   4+4,
   H5,   4,
   H5,   4,

   H3,   2,
   H2,   2,
   H1,   4+4,
   P,   2,
   H1,   2,

   //10
   H2,   4,
   H1,   2,
   H2,   2,
   H2,   4,
   H5,   4,

   H3,   4+4+4,
   H3,   4,

   H6,   4+4,
   H5,   4+4,

   //11
   H3,   2,
   H2,   2,
   H1,   4+4,
   P,   2,
   H1,   2,

   H2,   4,
   H1,   2,
   H2,   2+4,
   M7,   4,

   M6,   4+4+4,
   P,   4,

   0xFF   //终止标志
};

unsigned char FreqSelect,MusicSelect;

void main()
{
   Timer0Init();
   while(1)
   {
       if(Music[MusicSelect]!=0xFF)   //如果不是停止标志位
       {
           FreqSelect=Music[MusicSelect];   //选择音符对应的频率
           MusicSelect++;
           Delay(SPEED/4*Music[MusicSelect]);   //选择音符对应的时值
           MusicSelect++;
           TR0=0;
           Delay(5);   //音符间短暂停顿
           TR0=1;
       }
       else   //如果是停止标志位
       {
           TR0=0;
           while(1);
       }
   }
}

void Timer0_Routine() interrupt 1
{
   if(FreqTable[FreqSelect])   //如果不是休止符
   {
       /*取对应频率值的重装载值到定时器*/
       TL0 = FreqTable[FreqSelect]%256;       //设置定时初值
       TH0 = FreqTable[FreqSelect]/256;       //设置定时初值
       Buzzer=!Buzzer;   //翻转蜂鸣器IO口
   }
}

查看全文

http://www.kler.cn/news/305246.html