fengmingqi.c

一个关于蜂鸣器的简单的程序,适用于单片机开发

#include "reg52.h"
#include "intrins.h"
  sbit P1_2 =P3^3;

 delay(unsigned int j)        //延时子程序
{
unsigned int i;
for(i=0;i<j;i++);
}

BellNew()   //风鸣器响一声
{
 unsigned int i=1;
 while(i--)
 {
  P1_2=0;
  delay(30000);
  P1_2=1;
  delay(30000);
 }
}

FengMingQi() //风鸣器响六声
{
 BellNew(); delay(30000);
 BellNew(); delay(30000);
 BellNew(); delay(30000);
 BellNew(); delay(30000);
 BellNew(); delay(30000);
 BellNew(); delay(30000);
}




void main()
{

FengMingQi();
P1_2=0;
while(1);

}