51单片机 蜂鸣器播放提示音_单片机蜂鸣器发声代码

主函数

#include <REGX52.H>
#include "Delay.h"
#include "Key.h"
#include "Nixie.h"
#include "Buzzer.h" 
 
sbit Buzzer=P2^5;
unsigned char KeyNum;
unsigned int i;
 
 
void main()
{
	Nixie(1,0);
	while(1)
	{
		KeyNum=Key();
		
		if(KeyNum)
		{
			Buzzer_Time(1000);
			Nixie(1,KeyNum);
		}
	}
}

Buzzer

#include <REGX52.H>
#include <intrins.h>
#include "delay.h"
 
sbit Buzzer=P2^5;//蜂鸣器端口
 
 
/**
  * @brief  蜂鸣器私有延时函数，延时500us
  * @param  无
  * @retval 无
  */
void Buzzer_Delay500us()		//@12.000MHz
{
	unsigned char i;
 
	_nop_();
	i = 247;
	while (--i);
}
/**
  * @brief  蜂鸣器发声
  * @param  ms 发声的时长
  * @retval 无
  */
void Buzzer_Time(unsigned int ms)
{
	unsigned int i;
	for(i=0;i<ms*2;i++)
	{
		Buzzer=!Buzzer;
		Buzzer_Delay500us();
	}
}

Delay

void Delay(unsigned int xms)		//@12.000MHz
{
	unsigned char i, j;
	while(xms--)
	{
		i = 2;
		j = 239;
		do
		{
			while (--j);
		} while (--i);
	}
}

Key

#include <REGX52.H>
#include "Delay.h"
 
/**
  * @brief  获取独立按键键码
  * @param  无
  * @retval 按下按键的键码，范围0——4 无按键按下，返回值为0
  */
  
unsigned char Key()
{
	unsigned char KeyNumber=0;
	
	if(P3_1==0){Delay(100);while(P3_1==0);Delay(100);KeyNumber=1;}
	if(P3_0==0){Delay(100);while(P3_0==0);Delay(100);KeyNumber=2;}
	if(P3_2==0){Delay(100);while(P3_2==0);Delay(100);KeyNumber=3;}
	if(P3_3==0){Delay(100);while(P3_3==0);Delay(100);KeyNumber=4;}
	
	return KeyNumber;
}

MatrixLed

#include <REGX52.H>
#include "DELAY.h"
sbit RCK=P3^5;//位申明，重新命名 RCLK
sbit SCK=P3^6;//时钟  SRCLK
sbit SER=P3^4;//SER
 
#define MATRIX_LED_PORT P0
/**
  * @brief  74HC595写入一个字节
  * @param  要写入的字节
  * @retval 无
  */
void _74HC595_WriteByte(unsigned char Byte)//移位计时器
{
	unsigned char i;
	for(i=0;i<8;i++)
	{
		SER=Byte&(0x80>>i);
		SCK=1;
		SCK=0;
	}
	RCK=1;
	RCK=0;
}
/**
  * @brief  点阵屏初始化
  * @param  无
  * @retval 无
  */
void MatrixLED_Init()
{
	SCK=0;
	RCK=0;
}
 
/**
  * @brief  LED点阵屏显示一列数据
  * @param  Column要选择的列，范围0—7，0在最左边
			Data要选择的显示的数据，高位在上，1为亮，0为灭
  * @retval 无
  */
void MatrixLED_ShowColumn(unsigned char Column,Data)//点阵屏
{
	_74HC595_WriteByte(Data);
	P0=~(0x80>>Column);//移位操作
	Delay(1);
	MATRIX_LED_PORT=0xFF;//位清零
}

Nixie

#include <REGX52.H>
#include "Delay.h"
 
 
unsigned char NixieTable[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7f,0x6F};
 
void Nixie(unsigned char Location,Number)
{
	switch(Location)
	{
		case 1: P2_4=1;P2_3=1;P2_2=1;break; //??????
		case 2: P2_4=1;P2_3=1;P2_2=0;break;
		case 3: P2_4=1;P2_3=0;P2_2=1;break;
		case 4: P2_4=1;P2_3=0;P2_2=0;break;
		case 5: P2_4=0;P2_3=1;P2_2=1;break;
		case 6: P2_4=0;P2_3=1;P2_2=0;break;
		case 7: P2_4=0;P2_3=0;P2_2=1;break;
		case 8: P2_4=0;P2_3=0;P2_2=0;break;
	}
	P0=NixieTable[Number];
	//Delay(1);  
	//P0=0x00;
	
}