简易音乐盒
1：演奏模式：不同按键发出不同音符2：播放模式：按键选择10首音乐播放
3：音量调解功能：按键可设置播放音乐的大小
望采纳一下，谢谢谢谢
发光二极管 18个；
按键 4个；
STC89c52单片机 1个；
单片机插座 1个；
11.0592MHZ的晶振 1个；
22pf电容*2，10uf电容 1个；
喇叭 1个；
三极管 1个；
滑动变阻器 1个；
电阻10k 1个；
电阻5.1k 1个；
电源
杜邦线若干；
（如果不想设置放大电路，可以直接买个放大器）
#include <reg51.h>
sbit speaker = P3^1;
sbit key0 = P2^0;
sbit key1 = P2^1;
sbit key2 = P2^2;
sbit key3 = P2^3;
unsigned char k, i;
unsigned char timer0h, timer0l, time ,num ,tempi,tempstop,tempan,temptime;
unsigned char code table[]={//我做的数码管 数字显示
0x3f,0x30,0xed,0x79,
0x72,0x5b,0x5f};
/*
unsigned char code table[]={ //数码管 数字显示
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
*/
//---------------------------------1 2 3 4 5 6 7音调
code unsigned char FREQH[] = { //TH0部分
0xF2, 0xF3, 0xF5, 0xF5, 0xF6, 0xF7, 0xF8, //低音1234567
0xF9, 0xF9, 0xFA, 0xFA, 0xFB, 0xFB, 0xFC, 0xFC, //中
0xFC, 0xFD, 0xFD, 0xFD, 0xFD, 0xFE, //高
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF //超高
};
code unsigned char FREQL[] = { //TL0部分
0x42, 0xC1, 0x17, 0xB6, 0xD0, 0xD1, 0xB6,
0x21, 0xE1, 0x8C, 0xD8, 0x68, 0xE9, 0x5B, 0x8F,
0xEE, 0x44, 0x6B, 0xB4, 0xF4, 0x2D,
0x47, 0x77, 0xA2, 0xB6, 0xDA, 0xFA, 0x16
};
code unsigned char song[][150]={ //歌曲
{3,2,2, 3,2,2, 3,2,2, 1,2,1, 3,2,2, 0,0,0, 5,2,2, 0,0,0,
5,1,2, 0,0,0, 1,2,1, 0,0,0, 5,1,1, 0,0,0, 3,1,2, 0,0,0,
6,1,2, 7,1,2, 7,1,2, 6,1,2, 5,1,2, 3,2,2, 5,2,1, 6,2,1,
0,0,0, 4,2,1, 5,2,1, 0,0,0, 3,2,1, 0,0,0, 1,2,1, 2,2,1,
7,1,2, 0,0,0, 1,2,2, 0,0,0, 5,1,1, 0,0,0, 0,0,0, 3,1,1,
0,0,0, 6,1,2, 7,1,2, 0,0,0, 7,1,2, 6,1,2, 5,1,2, 3,2,2, 0,0,100
},
{6, 2, 3, 5, 2, 1, 3, 2, 2, 5, 2, 2, 1, 3, 2, 6, 2, 1, 5, 2, 1,
//一个音符有三个数字。前为第几个音、中为第几个八度、后为时长（以半拍为单位）。
//6, 2, 3 分别代表：６, 中音, ３个半拍;
//5, 2, 1 分别代表：５, 中音, １个半拍;
//3, 2, 2 分别代表：３, 中音, ２个半拍;
//5, 2, 2 分别代表：５, 中音, ２个半拍;
//1, 3, 2 分别代表：１, 高音, ２个半拍;
6, 2, 4, 3, 2, 2, 5, 2, 1, 6, 2, 1, 5, 2, 2, 3, 2, 2, 1, 2, 1,
6, 1, 1, 5, 2, 1, 3, 2, 1, 2, 2, 4, 2, 2, 3, 3, 2, 1, 5, 2, 2,
5, 2, 1, 6, 2, 1, 3, 2, 2, 2, 2, 2, 1, 2, 4, 5, 2, 3, 3, 2, 1,
2, 2, 1, 1, 2, 1, 6, 1, 1, 1, 2, 1, 5, 1, 6, 0, 0, 100},
{6, 3, 1, 6, 3, 1, 6, 3, 1, 6, 3, 1, 6, 3, 1, 6, 3, 1, 0,0,100},
{0,0,1, 0,0,100},
};
void delay(unsigned char t) //节拍
{
unsigned char t1;
unsigned long t2;
for(t1 = 0; t1 < t; t1++)
for(t2 = 0; t2 < 8000; t2++);
TR0 = 0;
}
void delaya(unsigned char t) //节拍
{
unsigned char t1;
unsigned long t2;
for(t1 = 0; t1 < t; t1++)
for(t2 = 0; t2 < 2000; t2++);
TR0 = 0;
}
void delay1(int z) //延迟z ms
{
int i,j;
for(i=0;i<110;i++)
for(j=0;j<z;j++);
}
/*
void an() //按键检测
{
P2=0xff;
if(key1==0||key2==0||key3==0)
{
delay1(10);
if(key1==0)
{
num++;
if(num==4)
num=0;
i=0;
time=0;
}
if(key2==0)
{
num--;
if(num==-1)
num=3;
i=0;
time=0;
}
if(key3==0)
{
tempstop=!tempstop;
}
while(!key1||!key2||!key3);
delay1(5);
while(!key1||!key2||!key3);
}
}*/
void an() //按键检测
{
P2=0xff;
tempan=P2;
tempan=tempan&0x0f;
while(tempan!=0x0f)
{
delay1(5);
tempan=P2;
tempan=tempan&0x0f;
while(tempan==0x0f);
switch(tempan)
{
case 0x0e:
num++;
if(num==4)
num=0;
i=0;
time=0;
break;
case 0x0d:
num--;
if(num==-1)
num=3;
i=0;
time=0;
break;
case 0x0b:
tempstop=!tempstop;
break;
case 0x07:
temptime=!temptime;
break;
}
while(tempan!=0x0f)
{
tempan=P2;
tempan=tempan&0x0f;
delay1(5);
}
}
}
//--------------------------------------
void main(void)
{
tempi=1;
TMOD = 1;
ET0 = 1;
EA = 1;
while(1)
{
if(song[num][i+2]==100)
i=0;
k = song[num][i]+7*(song[num][i + 1]-1);
timer0h = FREQH[k];
timer0l = FREQL[k];
time = song[num][i + 2];
if(tempi==1)
i += 3;
TH0 = timer0h;
TL0 = timer0l;
TR0 = 1;
if(!temptime)
delay(time);
else
delaya(time);
P1=table[num+1];
while(tempstop)
an();
}
}
void t0int() interrupt 1
{
TR0 = 0;
speaker = !speaker;
TH0 = timer0h;
TL0 = timer0l;
TR0 = 1;
an();
}