- #include <reg52.h>
- #define uchar unsigned char
- #define uint unsigned int
- sbit BEEP = P2^7;
- uchar code SONG_TONE[]=
- {
- 212,212,190,212,159,169,212,212,190,212,142,159,212,212,106,126,129,169,190,119,119,126,159,142,159,0
- };
- 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
- };
- void DelayMS(uint ms)
- {
- uchar t;
- while(ms--)
- {
- for(t=0;t<120;t++);
- }
- }
- void PlayMusic()
- {
- uint i =0,j,k;
- while(SONG_LONG[i]!=0||SONG_TONE[i]!=0)
- {
- for(j=0;j<SONG_LONG[i]*20;j++)
- {
- BEEP = ~BEEP;
- for(k=0;k<SONG_TONE[i]/3;k++);
- }
- DelayMS(10);
- i++;
- }
- }
- void main()
- {
- while(1)
- {
- PlayMusic();
- DelayMS(500);
- }
- }
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