STC89C52單片機蜂鳴器唱歌實驗

實現功能：通過對單片機定時器的配置，讓其產生不同頻率的方波，蜂鳴器根據頻
率的不同而發出不同的聲音，來達到唱歌的目的
實驗板型號：KBL-XYD-C52
實驗名稱： 蜂鳴器唱歌實驗
編寫人： 謝應東
編寫日期： 2012-4-26
////////////////////////////////////////////////////////////////////////
#include

#define uchar unsigned char
#define uint unsigned int

uchar cCount;

sbit FMQ =P2^4; //定義實驗板上蜂鳴器器控制腳

unsigned char code SONG[] ={ //祝你平安
0x26,0x20,0x20,0x20,0x20,0x20,0x26,0x10,0x20,0x10,0x20,0x80,0x26,0x20,0x30,0x20,
0x30,0x20,0x39,0x10,0x30,0x10,0x30,0x80,0x26,0x20,0x20,0x20,0x20,0x20,0x1c,0x20,
0x20,0x80,0x2b,0x20,0x26,0x20,0x20,0x20,0x2b,0x10,0x26,0x10,0x2b,0x80,0x26,0x20,
0x30,0x20,0x30,0x20,0x39,0x10,0x26,0x10,0x26,0x60,0x40,0x10,0x39,0x10,0x26,0x20,
0x30,0x20,0x30,0x20,0x39,0x10,0x26,0x10,0x26,0x80,0x26,0x20,0x2b,0x10,0x2b,0x10,
0x2b,0x20,0x30,0x10,0x39,0x10,0x26,0x10,0x2b,0x10,0x2b,0x20,0x2b,0x40,0x40,0x20,
0x20,0x10,0x20,0x10,0x2b,0x10,0x26,0x30,0x30,0x80,0x18,0x20,0x18,0x20,0x26,0x20,
0x20,0x20,0x20,0x40,0x26,0x20,0x2b,0x20,0x30,0x20,0x30,0x20,0x1c,0x20,0x20,0x20,
0x20,0x80,0x1c,0x20,0x1c,0x20,0x1c,0x20,0x30,0x20,0x30,0x60,0x39,0x10,0x30,0x10,
0x20,0x20,0x2b,0x10,0x26,0x10,0x2b,0x10,0x26,0x10,0x26,0x10,0x2b,0x10,0x2b,0x80,
0x18,0x20,0x18,0x20,0x26,0x20,0x20,0x20,0x20,0x60,0x26,0x10,0x2b,0x20,0x30,0x20,
0x30,0x20,0x1c,0x20,0x20,0x20,0x20,0x80,0x26,0x20,0x30,0x10,0x30,0x10,0x30,0x20,
0x39,0x20,0x26,0x10,0x2b,0x10,0x2b,0x20,0x2b,0x40,0x40,0x10,0x40,0x10,0x20,0x10,
0x20,0x10,0x2b,0x10,0x26,0x30,0x30,0x80,0x00,
//路邊的野華不要采
0x30,0x1C,0x10,0x20,0x40,0x1C,0x10,0x18,0x10,0x20,0x10,0x1C,0x10,0x18,0x40,0x1C,
0x20,0x20,0x20,0x1C,0x20,0x18,0x20,0x20,0x80,0xFF,0x20,0x30,0x1C,0x10,0x18,0x20,
0x15,0x20,0x1C,0x20,0x20,0x20,0x26,0x40,0x20,0x20,0x2B,0x20,0x26,0x20,0x20,0x20,
0x30,0x80,0xFF,0x20,0x20,0x1C,0x10,0x18,0x10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30,
0x20,0x2B,0x40,0x20,0x20,0x1C,0x10,0x18,0x10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30,
0x20,0x2B,0x40,0x20,0x30,0x1C,0x10,0x18,0x20,0x15,0x20,0x1C,0x20,0x20,0x20,0x26,
0x40,0x20,0x20,0x2B,0x20,0x26,0x20,0x20,0x20,0x30,0x80,0x20,0x30,0x1C,0x10,0x20,
0x10,0x1C,0x10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30,0x20,0x2B,0x40,0x20,0x15,0x1F,
0x05,0x20,0x10,0x1C,0x10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30,0x20,0x2B,0x40,0x20,
0x30,0x1C,0x10,0x18,0x20,0x15,0x20,0x1C,0x20,0x20,0x20,0x26,0x40,0x20,0x20,0x2B,
0x20,0x26,0x20,0x20,0x20,0x30,0x30,0x20,0x30,0x1C,0x10,0x18,0x40,0x1C,0x20,0x20,
0x20,0x26,0x40,0x13,0x60,0x18,0x20,0x15,0x40,0x13,0x40,0x18,0x80,0x00,

};
////////////////////////////////////////////////////////////////////////
函數名稱：Time0_Init
函數功能：定時器的初始化配置，使其能中斷，中斷的時間間隔為10ms
參數介紹：無
返回值： 無
注意事項：注意此時實驗板上用到的晶振為11.0592M的，要選用其他的，得重新配置
////////////////////////////////////////////////////////////////////////
void Init_Time0()
{
TMOD = 0x01; //設置定時器0為模式1(16bit)

TH0 = 0xDC; //給定時器0高八位賦初值
TL0 = 0x00; //給定時器0第八位賦初值

ET0 = 1; //允許定時器0中斷
EA = 1; //打開全局中斷
}
////////////////////////////////////////////////////////////////////////
函數名稱：Time0_Routine
函數功能：定時器0中斷服務函數，重新給定時器0賦值，同時把全局變量cCount加1
參數介紹：無
返回值： 無
注意事項：無
////////////////////////////////////////////////////////////////////////
void Time0_Routine() interrupt 1 using 1
{
TH0 = 0xDC;//重新給高八位賦新值
TL0 = 0x00;//重新給第八位賦新值
cCount++;//計數變量加1
}
////////////////////////////////////////////////////////////////////////
函數名稱：DelayUs
函數功能：延時函數，通過示波器測試，此函數每執行一次大概能延時55us
參數介紹：iDelay_Us：執行此延時函數的次數
iNumber1：第一個for語句所用的記錄循環的變量
iNumber2：第二個for語句所用的記錄循環的變量
返回值： 無
注意事項：無
////////////////////////////////////////////////////////////////////////
void DelayUs(unsigned int iDelay_Us)
{
uint iNumber1,iNumber2;
for(iNumber1=0;iNumber1 {
for(iNumber2=0;iNumber2<3;iNumber2++);
}
}
////////////////////////////////////////////////////////////////////////
函數名稱：FMQ_PlaySong
函數功能：控制實驗板上與蜂鳴器相連的引腳輸出不同的頻率的方波，依次來控制蜂鳴
器唱歌
參數介紹：cNumber：歌曲的選擇，0代表“祝你平安”，‘1’代表“路邊的野花不要采”
返回值： 無
注意事項：無
////////////////////////////////////////////////////////////////////////
void FMQ_PlaySong(unsigned char cNumber)
{
uchar cTemp1,cTemp2;
uint iAddr;
cCount = 0;//中斷計數器清0
iAddr = cNumber * 217;//歌曲的地址，可以參看SONG[]，你就會明白
while(1)
{ //把音碼變量數組里的值賦給臨時變量
cTemp1 = SONG[iAddr++];
if (cTemp1 == 0xFF) //休止符
{
TR0 = 0;
DelayUs(100); //延時
}
else if (cTemp1 == 0x00) //判斷是否歌曲結束
{
return;
}
else
{
cTemp2 = SONG[iAddr++];//判斷完，不是休止符與結束符后，讓蜂鳴器唱歌
TR0 = 1; //讓定時器0開始工作
while(1)
{
FMQ = ~FMQ; //讓蜂鳴器不停地在開與關之間切換
DelayUs(cTemp1);
if(cTemp2 == cCount)
{
cCount = 0;
break;
}
}
}
}
}
////////////////////////////////////////////////////////////////////////
函數名稱：main
函數功能：完成系統的初始化，讓實驗板上的蜂鳴器不停循環的唱上面的兩首歌
參數介紹：無
返回值： 無
注意事項：無
////////////////////////////////////////////////////////////////////////
void main()
{
DelayUs(100); //穩定系統
Init_Time0();//定時器0中斷初始化
while(1)
{
FMQ_PlaySong(0); //播放“祝你平安”
DelayUs(100); //延時一下，以便播放下一首歌
FMQ_PlaySong(1); //播放“祝你平安”
DelayUs(100); //延時一下，以便播放下一首歌
}
}