sy.c

本程序能用单片机实现音乐的输出

#include<reg51.h>

sbit   p34 = P1^0; //扬声器的输出端口

void Music(unsigned char number);
void delay10ms(unsigned char time);
void delay50us(unsigned char time);
unsigned char code SOUNDLONG[];
unsigned char code SOUNDTONE[];

void main()
{
while(1)
{
   Music(1);   //生日快乐
   delay10ms(250);
   delay10ms(250);
   Music(2);   //三轮车
   delay10ms(250);
   delay10ms(250);
}
}

void Music(unsigned char number)
{
unsigned int k,n;
unsigned int SoundLong,SoundTone;
unsigned int i,j,m;

for(k=0;k<number-1;k++)
{
   while(SOUNDLONG[i] !=0){i++;}
   i++;
   if(i>=57) i=0;
}
for(k=0;k<number-1;k++)
{
   while(SOUNDTONE[j] !=0){j++;}
   j++;
   if(j>=57) j=0;
}

do
{ 
   if(i>=57) i=0;
   if(j>=57) j=0;
   SoundLong=SOUNDLONG[i];
   SoundTone=SOUNDTONE[j];
   i++;
   j++;

   for(n=0;n<SoundLong;n++)
   {
    for(k=0;k<12;k++)
    {
     p34=0;
     for(m=0;m<SoundTone/2;m++)
      ; 
     p34=1;
     for(m=0;m<SoundTone/2;m++)
      ;
    }
   }
   delay50us(6);
}while((SOUNDLONG[i] !=0) || (SOUNDTONE[j] !=0));
}

//延时程序
void delay10ms(unsigned char time)
{
unsigned char a,b,c;
for(a=0;a<time;a++)
   for(b=0;b<100;b++)
    for(c=0;c<12;c++)
    ;
}
void delay50us(unsigned char time)
{
unsigned char a,b;
for(a=0;a<time;a++)
   for(b=0;b<6;b++)
    ;
}

unsigned char code SOUNDLONG[]=
{9,3,12,12,12,24,
   9,3,12,12,12,24,
   9,3,12,12,12,12,12,
   9,3,12,12,12,24,
   0, //生日快乐end
   6,6,9,3,6,6,12,
   6,6,6,6,6,6,12,
   6,6,9,3,6,6,9,3,
   6,3,3,6,3,3,6,6,9,
   0 //三轮车end
};

unsigned char code SOUNDTONE[]=
{
212,212,190,212,159,169,
212,212,190,212,142,159,
212,212,106,126,159,169,190,
119,119,126,159,142,159,
0, //生日快乐end
239,239,212,189,159,159,189,
159,159,142,126,120,120,159,
120,120,142,159,189,142,159,189,
239,212,189,159,142,159,189,212,239,
0 //三轮车end
};