beep.c

５１ 单片机的典型实例

#include<reg51.h>
#include<define.h>
#include<global.h>
#include<initial.h>
#include<delay.h>
#include<led.h>
#include<input.h>
#include<beep.h>
#include<key.h>
#include<music.h>

void Beep(word count , byte soundlong , byte tone )
{ word  i,j,k,SpFreq;
	
	SpFreq = (1000/tone)/2;
	
	for(i=0;i<count;i++)
	{
		for (j=0;j<soundlong;j++)
		{
			for (k=0;k<SpFreq;k++)
			   P1_6 = 0;
			for (k=0;k<SpFreq;k++)
			   P1_6 = 1;
		}
		DelayX10ms(20);
	}
}