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仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

單片機(jī)源程序如下:

#include <REGX52.H>
sbit beep = 0xA6;
unsigned int num = 0;
unsigned char number = 1;//歌曲序號
unsigned char time = 0;//節(jié)拍時(shí)間,第三個數(shù)
unsigned char fre_num ;
unsigned char sign = 0;
unsigned char flag = 1;
//簡單愛
unsigned char code music[]={
5,1,1, 1,2,1, 2,2,1, 3,2,1, 2,2,1, 3,2,1, 4,2,1, 5,2,1, 5,2,1, 5,2,1,
4,2,1, 3,2,1, 2,2,3, 5,1,1, 1,2,1, 2,2,1, 3,2,1, 4,2,1, 5,2,1, 5,2,1,
5,2,1, 6,2,1, 5,2,2, 2,2,1, 3,2,1, 1,2,2, 1,2,1, 6,1,1, 2,2,1, 2,2,1,
3,2,1, 3,2,1, 1,2,1, 5,2,1, 1,2,1, 5,2,1, 1,2,1, 7,1,1, 1,2,1, 1,2,1, 6,1,1,
2,2,1, 2,2,1, 3,2,1, 3,2,1, 5,2,1, 5,2,1,
5,2,1, 6,2,1, 5,2,2, 2,2,1, 3,2,1, 1,2,2,
5,1,1, 1,2,1, 2,1,2, 3,2,1, 2,2,1, 3,2,1, 4,2,1, 5,2,1, 5,2,1, 5,2,1,
4,2,1, 3,2,1, 2,2,3, 5,1,1, 1,2,1, 2,2,1, 3,2,1, 2,2,1, 3,2,1, 4,2,1,
5,2,1, 5,2,1, 5,2,2, 2,2,1, 3,2,1, 1,2,2, 1,2,1, 6,1,1, 2,2,1, 2,2,1,
3,2,1, 3,2,1, 1,2,2, 5,2,1, 1,2,1, 5,2,1, 5,2,1, 7,1,1, 1,2,1, 0,0,0 };
// 頻率-半周期數(shù)據(jù)表高八位共保存了四個八度的28個頻率數(shù)據(jù)
unsigned char code NOTEH[]={
0xF2, 0xF3, 0xF5, 0xF5, 0xF6, 0xF7, 0xF8, //低音1234567
0xF9, 0xF9, 0xFA, 0xFA, 0xFB, 0xFB, 0xFC, 0xFC,//1,2,3,4,5,6,7,i
0xFC, 0xFD, 0xFD, 0xFD, 0xFD, 0xFE, //高音 234567
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF}; //超高音 1234567
// 頻率-半周期數(shù)據(jù)表低八位
unsigned char code NOTEL[]={
0x42, 0xC1, 0x17, 0xB6, 0xD0, 0xD1, 0xB6, //低音1234567
0x21, 0xE1, 0x8C, 0xD8, 0x68, 0xE9, 0x5B, 0x8F, //1,2,3,4,5,6,7,i
0xEE, 0x44, 0x6B, 0xB4, 0xF4, 0x2D, //高音 234567
0x47, 0x77, 0xA2, 0xB6, 0xDA, 0xFA, 0x16}; //超高音 1234567
void Delay(unsigned char t) //延時(shí)子函數(shù),控制發(fā)音的時(shí)間長度,每個節(jié)拍0.4S
{
unsigned char t1;
unsigned long t2;
for (t1 = 0; t1 < t; t1++) //嵌套循環(huán), 共延時(shí)t個半拍
{
for (t2 = 0; t2 < 8000; t2++) //延時(shí)期間, 可進(jìn)入T0中斷去發(fā)音
{
;
}
}
TR0 = 0; //關(guān)閉T0, 停止發(fā)音
}
void Delay20ms() //@11.0592MHz
{
unsigned char i, j, k;
i = 1;
j = 216;
k = 35;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}
void ONE() //演奏一個音符
{
beep = !beep;
TH0 = NOTEH[fre_num];
TL0 = NOTEL[fre_num];
TR0 = 1;
Delay(time);
}
void PlayMusic() //播放相應(yīng)歌曲的某個音符
{
if(sign == 1)
{
if ((number == 1) && (flag == 1))
{
fre_num = music[num] + 7 * music[num + 1] - 1; //第i個是音符,第i+1個是第幾個八度
time = music[num + 2]; //讀出時(shí)間長度數(shù)值
num += 3;
if (fre_num < 0)
{
num = 0;
number = 1;
}
ONE(); //發(fā)出一個音符
}
}
sign = 0;
beep = 1;
}
unsigned char key_scan()
{
unsigned char KeyNumber = 0;
P1 = 0xff;
P1_0 = 0;
if(P1_4 == 0){Delay20ms();while(P1_4 == 0);KeyNumber = 1;}
if(P1_5 == 0){Delay20ms();while(P1_5 == 0);KeyNumber = 2;}
if(P1_6 == 0){Delay20ms();while(P1_6 == 0);KeyNumber = 3;}
if(P1_7 == 0){Delay20ms();while(P1_7 == 0);KeyNumber = 4;}
P1 = 0xff;
P1_1 = 0;
if(P1_4 == 0){Delay20ms();while(P1_4 == 0);KeyNumber = 5;}
if(P1_5 == 0){Delay20ms();while(P1_5 == 0);KeyNumber = 6;}
if(P1_6 == 0){Delay20ms();while(P1_6 == 0);KeyNumber = 7;}
if(P1_7 == 0){Delay20ms();while(P1_7 == 0);KeyNumber = 8;}
P1 = 0xff;
return KeyNumber;
}
unsigned char ss ;
void Key()
{
ss = key_scan();
if(ss == 1)
{
beep = !beep;
TH1 = NOTEH[8];
TL1 = NOTEL[8];
TR1 = 1;
Delay(1);
beep = 0;
}
if(ss == 2)
{
beep = !beep;
TH1 = NOTEH[9];
TL1 = NOTEL[9];
TR1 = 1;
Delay(1);
beep = 0;
}
if(ss == 3)
{
beep = !beep;
TH1 = NOTEH[10];
TL1 = NOTEL[10];
TR1 = 1;
Delay(1);
beep = 0;
}
if(ss == 4)
{
beep = !beep;
TH1 = NOTEH[11];
TL1 = NOTEL[11];
TR1 = 1;
Delay(1);
beep = 0;
}
if(ss == 5)
{
beep = !beep;
TH1 = NOTEH[12];
TL1 = NOTEL[12];
TR1 = 1;
Delay(1);
beep = 0;
}
if(ss == 6)
{
beep = !beep;
TH1 = NOTEH[13];
TL1 = NOTEL[13];
TR1 = 1;
Delay(1);
beep = 0;
}
if(ss == 7)
{
beep = !beep;
TH1 = NOTEH[14];
TL1 = NOTEL[14];
TR1 = 1;
Delay(1);
beep = 0;
}
}
void time0() interrupt 1
{
if(sign == 1)
{
beep = !beep;
TH0 = NOTEH[fre_num];
TL0 = NOTEL[fre_num];
TR0 = 1;
}
}
void main()
{
TMOD = 0x11;
ET0 = 1;
EA = 1;
beep = 1;
while(1)
{
PlayMusic();
if(ss == 8)
{
sign = 1;
}
else
Key();
}
}

復(fù)制代碼

程序有問題求幫助:

音樂播放器.7z (142.61 KB, 下載次數(shù): 35)

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