使用51单片机蜂鸣器播放音乐 求keil程序

//主程序查音符码，将不同的初值装入定时器，定时器每中断一次，P3.7取反一次，形成不同频率的方波

//11代表低数含音逗樱哆薯指笑 21代表高音哆 1代表中音哆

//12代表低音来 22代表高音来 2代表中音来，是不是翻译乐谱很方便

#include<reg52.h>

sbit SPK = P3^7 //P3.7外接扬声器，可以改成你所说的P1^5

#define uint unsigned int

#define uchar unsigned char

uint x,y

uint i,j,k

//以下是根据歌谱转来的音乐代码 3代表中音咪 1个全音被分成4个1/4 音符

//小燕子第一句 3,5,21,6,5,5,5,5,21是高音哆 ，后面4个5，是因为这个音节占4拍

uchar code MUSIC[]={3,5,21,6,5,5,5,5, 3,5,6,21,5,5,5,5, 21,21,21,23,22,22,21,21, 22,21,6,21,5,5,5,5, 3,3,5,6,6,5,6, 21,21,22,5,6,6,6,6, 3,3,1,1,2,2,2,2,2,

2,2,2,3,5,5,5,5, 21,21,2,3,5,5,5,5,2,1,16,1,15,15,15,15, 0,0,0,0,16,16,1,1, 15,15,16,16,1,1,1,1, 5,5,6,6,4,4,3,3, 2,2,2,2,2,2,5,5, 5,5,2,2,4,4,3,3, 2,2,1,2,4,4,4,4,

16,16,1,1,2,2,4,4,2,1,16,1,15,15,15,15, 16,16,16,16,15,15,15,15, 15,15,15,15,15,15,15,15, 0,0,5,5,5,5,0,0, 5,5,5,5,4,4,4,4,

5,5,5,5,2,2,2,2, 2,2,5,5,4,4 ,4,4,16,16,1,1,2,2,2,2, 4,4,2,2,2,2,4,4,5,5,5,5,5,5,6,6, 21,21,21,21,6,6,21,21,

21,21,6,6,5,5,5,5,5,5,6,6,5,5,4,4, 2,2,2,2,2,2,5,5, 5,5,2,2,4,4,3,3,2,2,1,2,4,4,4,4,16,16,1,1,2,2,4,4,

2,1,16,1,15,15,15,15, 16,16,16,16,15,15,15,15, 5,5,6,6,5,5,6,6, 5,5,4,4,5,5,5,5, 1,1,2,2,1,1,2,2, 15,15,16,16,1,1,1,1,

5,5,6,6,5,5,6,6, 21,21,6,6,5,5,5,5, 1,1,2,2,1,1,2,2, 15,15,16,16,1,1,1,1, 5,5,6,6,5,5,4,4, 5,5,5,5,1,1,2,2, 15,15,16,16,1,1,1,1,

5,5,6,6,5,5,5,5, 1,1,2,2,1,1,1,1, 5,5,6,6,5,5,5,5, 1,1,2,2,1,1,1,1, 5,5,5,5,1,1,1,1, 5,5,5,5,1,1,1,1, 5,5,5,5,1,1,5,5,

1,1,5,5,1,1,5,5, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 0,0,1,1,1,1,0,0,5,5,5,5,4,4,4,4,5,5,5,5,2,2,2,2,2,2,5,5,4,4,4,4,

6,6,1,1,2,2,2,2, 4,4,2,2,2,2,4,4, 5,5,5,5,5,5,6,6, 21,21,21,21,6,6,21,21, 21,21,6,6,5,5,5,5, 5,5,6,6,5,5,4,4, 2,2,2,2,2,2,5,5,

5,5,2,2,4,4,3,3, 2,2,1,22,4,4,4,4, 16,16,1,1,2,2,4,4, 4,4,6,6,5,5,5,5, 5,5,5,5,5,5,5,5, 6,6,6,6,5,5,5,5}

uchar code table[] = { 0,0xfc,0xfc,0xfd,0xfd,0xfd,0xfd,0xfe,0,0,0,//定时半周期的初始值中音123 4 5 67高8位

//三个0是补位码，为了使表格整齐，便于按规律查询 首个0是休止符11个

0xf8,0xf9,0xfa,0xfa,0xfb,0xfb,0xfc,0,0,0,//低音1 2 3 4 5 67高8位 10个

0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xff, //高音1 2 3 4 5 67高8位 7个

0,0x44,0xad,0x0a,0x34,0x82,0xc8,0x06,0,0,0,//中音123 4 5 67低8位 10个

0x89,0x59,0x13,0x68,0x04,0x90,0x0c,0 ,0,0, //低音1 2 3 4 5 6 7低8位10个

0x22,0x56,0x85,0x9a,0xc1,0xe4,0x03} //高音1 2 3 4 5 6 7低8位 7个

void delay(i) //晶振12MHZ时延时1ms

{

for(j=ij>0j--)

for(k=121k>0k--)

}

void TIM0_ISR() interrupt 1

{

SPK=!SPK//定时取反,形成方波

TH0=table[x]//重新载入定时半周期的初始值

TL0=table[x+28]//为什么加28 11+10+7=28

}

void main(void)

{

TMOD|=0x01

EA=1

ET0=1

while(1)

{

y=0

while(y<592)//此乐谱里面有592个音符

{

x=MUSIC[y]//查乐谱表

TH0=table[x] //查不同音节的定时器初值

TL0=table[x+28]

TR0=1 //打开定时器

if(y>72)//两首曲子不同节奏,延时不同

{

delay(125) //延时125ms

}

else

{

delay(250) //延时250ms

}

y++

TR0=0

}

}

}

1、在Keil中创建一个新的工程，并在渗察工程中添加一个蜂鸣器驱动文件。

2、在代码中使用PWM模块来控制蜂鸣器的输出频巧尺率。可以通过修改PWM模块的占空比和周期来改变输出频率。例如，以下代码可以将蜂鸣器输出频率设置为1kHz。

3、通过修改PWM模块的周期和占空比来改变蜂鸣器的输出频率丛宽茄，从而发出不同的声音。

这是我学校电子设计时做的，可以d琴，也有几首歌在里面。。你应该看得懂#include <reg52.h>#define uchar unsigned char

#define uint unsigned int

#define ulong unsigned long

sbit BEEP=P2^0//喇弯闷伏叭输出脚uchar th0_f//在中断中装载的罩伍T0的值高8位

uchar tl0_f/埋携/在中断中装载的T0的值低8位

uchar key/*------------------------------------------------

函数声明

------------------------------------------------*/

uchar keyscan(void)//键盘扫描程序

void delay(uint i)//延时子程序/*-------- T0的值,及输出频率对照表 --------------*/

uchar code freq[36*2]={

0xA9,0xEF,//0x3F,0XEE,//00220HZ ,1 //0

0x93,0xF0,//0X3D,0XEF,//00233HZ ,1#

0x73,0xF1,//0X30,0XF0,//00247HZ ,2

0x49,0xF2,//0X18,0XF1,//00262HZ ,2#

0x07,0xF3,//0XE6,0XF1,//00277HZ ,3

0xC8,0xF3, //0XB7,0XF2,//00294HZ ,4

0x73,0xF4, //0X71,0XF3,//00311HZ ,4#

0x1E,0xF5, //0X2A,0XF4,//00330HZ ,5

0xB6,0xF5, //0XCF,0XF4,//00349HZ ,5#

0x4C,0xF6, //0X72,0XF5,//00370HZ ,6

0xD7,0xF6, //0X09,0XF6,//00392HZ ,6#

0x5A,0xF7, //0X97,0XF6,//00415HZ ,7

0xD8,0xF7, //0X20,0XF7,//00440HZ 1 //12

0x4D,0xF8, //0X9F,0XF7,//00466HZ 1# //13

0xBD,0xF8, //0X18,0XF8,//00494HZ 2 //14

0x24,0xF9, //0X88,0XF8,//00523HZ 2# //15

0x87,0xF9, //0XF3,0XF8,//00554HZ 3 //16

0xE4,0xF9, //0X59,0XF9,//00587HZ 4 //17

0x3D,0xFA, //0X05,0XFA,//00622HZ 4# //18

0x90,0xFA, //0X13,0XFA,//00659HZ 5 //19

0xDE,0xFA, //0X66,0XFA,//00698HZ 5# //20

0x29,0xFB, //0XB9,0XFA,//00740HZ 6//21

0x6F,0xFB, //0X05,0XFB,//00784HZ 6# //22

0xB1,0xFB,//0X4D,0XFB,//00831HZ 7 //23

0xEF,0xFB, //0X90,0XFB,//00880HZ `1

0x2A,0xFC, //0XD0,0XFB,//00932HZ `1#

0x62,0xFC,//0X0C,0XFC,//00988HZ `2

0x95,0xFC, //0X44,0XFC,//01046HZ `2#

0xC7,0xFC, //0X7B,0XFC,//01109HZ `3

0xF6,0xFC, //0XAD,0XFC,//01175HZ `4

0x22,0xFD, //0XDD,0XFC,//01244HZ `4#

0x4B,0xFD, //0X0A,0XFD,//01318HZ `5

0x73,0xFD,//0X35,0XFD,//01397HZ `5#

0x98,0xFD, //0X5D,0XFD,//01480HZ `6

0xBB,0xFD, //0X83,0XFD,//01568HZ `6#

0xDC,0xFD, //0XA6,0XFD,//01661HZ `7 //35

}//定时中断0,用于产生唱歌频率

timer0() interrupt 1

{

TL0=tl0_fTH0=th0_f//调入预定时值

BEEP=~BEEP//取反音乐输出IO

}//音乐符号串解释函数

//入口:要解释的音乐符号串,输出的音调串,输出的时长串

changedata(uchar *song,uchar *diao,uchar *jie)

{

uchar i,i1,j

char gaodi//高低+/-12音阶

uchar banyin//有没有半个升音阶

uchar yinchang//音长

uchar code jie7[8]={0,12,14,16,17,19,21,23}//C调的7个值

*diao=*song

for(i=0,i1=0)

{

gaodi=0//高低=0

banyin=0//半音=0

yinchang=4//音长1拍

if((*(song+i)=='|') || (*(song+i)==' ')) i++

//拍子间隔和一个空格过滤

switch(*(song+i))

{

case ',': gaodi=-12i++//低音

break

case '`': gaodi=12i++//高音

break

}

if(*(song+i)==0) //遇到0结束

{

*(diao+i1)=0//加入结束标志0

*(jie+i1)=0

return

}

j=*(song+i)-0x30i++//取出基准音

j=jie7[j]+gaodi//加上高低音

yinc: switch(*(song+i))

{

case '#': //有半音j加一个音阶

i++j++

goto yinc

case '-': //有一个音节加长

yinchang+=4

i++

goto yinc

case '_': //有一个音节缩短

yinchang/=2

i++

goto yinc

case '.': //有一个加半拍

yinchang=yinchang+yinchang/2

i++

goto yinc

}

*(diao+i1)=j//记录音符

*(jie+i1)=yinchang//记录音长

i1++

}

}//奏乐函数

//入口:要演奏的音乐符号串

void play(uchar *songdata)

{

uchar i,c,j=0

uint n

uchar diaodata[48]//音调缓冲

uchar jiedata[48]//音长缓冲

changedata(songdata,diaodata,jiedata)//解释音乐符号串

TR0=1

for(i=0diaodata[i]!=0i++) //逐个符号演奏

{

tl0_f=freq[diaodata[i]*2]//取出对应的定时值送给T0

th0_f=freq[diaodata[i]*2+1]

for(c=0c<jiedata[i]c++) //按照音长延时

{ key = keyscan()

for(n=0n<29500n++)// 29500

if(key != 0xff)//((!K1)||(!K2)||(!K3)||(!K4))//发现按键,立即退出播放

{

TR0=0

return

}

}

TR0=0

for(n=0n<460n++)//460音符间延时

TR0=1

}

TR0=0

}//一分钱

uchar code yifenqian[]={

"5`1|6_`1_5|3_5_2_3_|5-|"

"3_5_6_`1_|5_6_5_3_|1.3__|2-|"

"3_2_1_2_|3-|6_5_3_5_|6-|"

"5_`1_6_5_|3_5_2|5_2_3_2_|1-|"

}//世上只有妈妈好

uchar code mamahao[]={

"6.5_35|`16_5_6-|35_6_53_2_|1_,6_5_3_2-|"

"2.3_55_6_|321-|5.3_2_1_,6_1_|,5--"

}

//找朋友

uchar code zhaopengyou[]={ "5_6_5_6_|5_6_5|5_`1_7_6_|5 3|"

"5_5_3_4_|5_5_3|1_4_3_2_|1_2_1|"

}

//茉莉花

uchar code molihua[]={"33_5_6_`1_`1_6_|55_6_5-|33_5_6_`1_`1_6_|55_6_5-|"

"5553_5_|665-|32_3_53_2_|11_2_1|"

//"3_2_1_3_2.3_|56_`1_5-|23_5_2_3_1_,6_|,5-,61|"

//"2.3_1_2-1_,6_|,5--"

}

//新年好

uchar code xinnianhao[]={

"1_1_1 ,5|3_3_3 1|1_3_5 5|4_3_2-|"

"2_3_4-|3_2_3 1|1_3_2 ,5|,7_2_1-|"

}

//小星星

uchar code xingxing[]={

"1155|665-|4433|221-|"

"5544|332-|5544|332-|"

"1155|665-|4433|221-|"

}

//外婆的澎湖湾

uchar code waipodephw[]={

"3_5_5_5_6_`1_6_5_|`1_`1_`1_6_5-|"

"`3_`3_`3_`3_`4_`3_`2_`1_|`2_`2_`2_`3_`2-|"

"`3_`3_`3_`3_`4_`3_`2_`1_|6_`1_`1_6_5-|"

}

}

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