51單片機用蜂鳴器播放歌曲

ID:422343 · 發表于 2018-11-7 15:09

#include <reg52.h>
sbit BUZZ = P1^6;
unsigned int code NoteFrequ[] = {
523,  587,  659,  698,  784,  880,  988,
1047, 1175, 1319, 1397, 1568, 1760, 1976
};
unsigned int code NoteReload[] = {
65536 - (11059200/12) / (523*2),
65536 - (11059200/12) / (587*2),
65536 - (11059200/12) / (659*2),
65536 - (11059200/12) / (698*2),
65536 - (11059200/12) / (784*2),
65536 - (11059200/12) / (880*2),
65536 - (11059200/12) / (988*2),
65536 - (11059200/12) / (1047*2),
65536 - (11059200/12) / (1175*2),
65536 - (11059200/12) / (1319*2),
65536 - (11059200/12) / (1397*2),
65536 - (11059200/12) / (1568*2),
65536 - (11059200/12) / (1760*2),
65536 - (11059200/12) / (1976*2),
};
bit enable = 1;
bit tmrflag = 0;
unsigned char T0RH = 0xFF;
unsigned char T0RL = 0x00;
void PlayTwoTiger();
void main()
{
unsigned int i;

EA = 1;
TMOD = 0x01;
TH0 = T0RH;
TL0 = T0RL;
ET0 = 1;
TR0 = 1;

while (1)
{
      PlayTwoTiger();
      for (i=0; i<40000; i++);
}
}