/*此程序是51单片机c语言编写的电子琴+音乐播放器,当用杜邦线将P1^0管脚接地时,单片机就会放出《世上只有妈妈好》,将P1^1 管脚接地时单片机就播放《祝你生日快乐》,
两者为高电平时进入电子钢琴模式,利用16个矩阵键盘发出相应的哆、瑞、米、发、索。此文档的乐谱是借鉴别人的,因为本人是音乐白痴!这是我第一次发表,我希望能帮到有需要的人啦........*/
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit beep=P3^4; //定义蜂鸣器
sbit key1=P3^2;
sbit key2=P3^3;
void delayms(uint x);
uchar timer0h,timer0l,time,flag,i,k; //flag==0时为电子钢琴模式,flag==1时为音乐播放器
uchar code yuepu[]={ 6,2,3,5,2,1, 3,2,2, 5,2,2, 1,3,2, 6,2,1, 5,2,1, 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, 0,0,0 }; //世上只有妈妈好乐谱
uchar code yuepu1[]={5,1,1, 5,1,1, 6,1,2, 5,1,2, 1,2,2, 7,1,4,
5,1,1, 5,1,1, 6,1,2, 5,1,2, 2,2,2, 1,2,4,
5,1,1, 5,1,1, 5,2,2, 3,2,2, 1,2,2, 7,1,2, 6,1,2,
4,2,1, 4,2,1, 3,2,2, 1,2,2, 2,2,2, 1,2,4}; //祝你生日快乐乐谱
uchar code TH_0[]={
0xF2,0xF3,0xF5,0xF5,0xF6,0xF7,0xF8,
0xF9,0xF9,0xFA,0xFA,0xFB,0xFB,0xFC,0xFC,
0xFC,0xFD,0xFD,0xFD,0xFD,0xFE, // 28个音阶高八位频率表 装进定时器高八位
0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFF,
} ;
uchar code TL_0[]={
0x42,0xC1,0x17,0xB6,0xD0,0xD1,0xB6,
0x21,0xE1,0x8C,0xD8,0x68,0xE9,0x5B,0x8F, // 28个音阶低八位频率表 装进定时器 低八位
0xEE,0x44, 0x6B,0xB4,0xF4,0x2D,
0x47,0x77,0xA2,0xB6,0xDA,0xFA,0x16,
};
void delay(uchar t)
{
uchar t1;
unsigned long t2;
for(t1=0;t1<t;t1++) //延时半拍函数,控制音乐节奏
{
for(t2=0;t2<8000;t2++)
{ ; }
}
}
/*音乐处理函数*/
void song()
{
TH0=timer0h;
TL0=timer0l; // 唱歌程序
TR0=1;
delay(time); //延时,让此音节播放的长短
TR0=0; //关定时器,为下个音节响做准备
}
void keyscan() //检测十六个发出音乐按键函数
{
if(!key1)
{ unsigned flag=1;
uchar i=0;
while(i<100) //音乐数组长度 ,唱完从头再来
{
if(key1)
{ beep=1; //使蜂鸣器置高关闭,预防在进入中断取反时将它置低打开
break;
}
k=yuepu[i]+7*yuepu[i+1]-1;
timer0h=TH_0[k]; // 把对应的音乐频率放进定时器0
timer0l=TL_0[k];
time=yuepu[i+2]; //音乐节拍
i+=3;
song();
}
}
if(!key2) // music为低电平时,播放《祝你生日快乐》
{ unsigned flag=1;
i=0;
while(i<75) //乐谱的长度
{
if(key2)
{
beep=1;
break;
}
k=yuepu1[i]+7*yuepu1[i+1]-1;
timer0h=TH_0[k];
timer0l=TL_0[k];
time=yuepu1[i+2];
i+=3;
song();
}
}
}
void main()
{
TMOD=1;
EA=1;
ET0=1;
while(1)
{
keyscan();
}
}
/*定时器中断*/
void time0() interrupt 1
{
if(flag==0)
{
beep=!beep; //电子琴模式时进入此语句
TH0=timer0h;
TL0=timer0l;
}
else
{ beep=!beep;
TH0=timer0h; //音乐播放器模式进入此语句
TL0=timer0l;
}
}
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