Microcontroller C language programming: Playing Happy Birthday song-EEWORLD

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/* Name: Play music

Description: The program plays the Happy Birthday song while it is running. No timer interrupt is used, and all frequencies are completely realized by delay.

#include

#define uchar unsigned char

#define uint unsigned int

sbit BEEP=P3^7;

//Happy Birthday song note frequency table, different frequencies are determined by different delays

uchar code SONG_TONE[]={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};

//Happy Birthday song beat chart, the beat determines the playing length of each note

uchar code SONG_LONG[]={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};

//Delay

void DelayMS(uint x)

{

uchar t;

while(x--) for(t=0;t<120;t++);

}

//Play function

void PlayMusic()

{

uint i=0,j,k;

while(SONG_LONG[i]!=0||SONG_TONE[i]!=0)

{ //Play each note, SONG_LONG is the beat length

for(j=0;j

{

BEEP=~BEEP;

//SONG_TONE delay table determines the frequency of each note

for(k=0;k

}

DelayMS(10);

i++;

}

}[page]

void main()

{

BEEP=0;

while(1)

{

PlayMusic(); //Play Happy Birthday

DelayMS(500); //Pause for a while after playing

}

Microcontroller C language programming: Playing Happy Birthday song

Keywords：MCU Reference address：Microcontroller C language programming: Playing Happy Birthday song

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