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標題: 51數碼八音盒 [打印本頁]

作者: yang!@ 時間: 2018-7-7 15:29
標題: 51數碼八音盒

#include "reg52.h"    //此文件中定義了單片機的一些特殊功能寄存器
#include "SoundPlay.h"
#include"music.h"

typedef unsigned int u16;    //對數據類型進行聲明定義
typedef unsigned char u8;

void Delay1ms(unsigned int count)
{
unsigned int i,j;
for(i=0;i<count;i++)
for(j=0;j<120;j++);
}

void main()
{
InitialSound();
while(1)
{
Play(Music_Girl,0,3,360);

Delay1ms(500);
Play(Music_Same,0,3,360);
Delay1ms(500);
Play(Music_Two,0,3,360);
Delay1ms(500);
}
}

***************************************************************************/
#ifndef __SOUNDPLAY_H_REVISION_FIRST__
#define __SOUNDPLAY_H_REVISION_FIRST__

//**************************************************************************
#include"music.h"

#define SYSTEM_OSC 12000000 //定義晶振頻率12000000HZ
#define SOUND_SPACE 4/5 //定義普通音符演奏的長度分率,//每4分音符間隔
sbit BeepIO =    P1^5; //定義輸出管腳
unsigned char value=0;
unsigned int  code FreTab[12]  = { 262,277,294,311,330,349,369,392,415,440,466,494 }; //原始頻率表
unsigned char code SignTab[7]  = { 0,2,4,5,7,9,11 };    //1~7在頻率表中的位置
unsigned char code LengthTab[7]= { 1,2,4,8,16,32,64 };
unsigned char Sound_Temp_TH0,Sound_Temp_TL0; //音符定時器初值暫存
unsigned char Sound_Temp_TH1,Sound_Temp_TL1; //音長定時器初值暫存
//**************************************************************************
void InitialSound(void)
{
BeepIO = 0;
Sound_Temp_TH1 = (65535-(1/1200)*SYSTEM_OSC)/256; // 計算TL1應裝入的初值 (10ms的初裝值)
Sound_Temp_TL1 = (65535-(1/1200)*SYSTEM_OSC)%256; // 計算TH1應裝入的初值
TH1 = Sound_Temp_TH1;
TL1 = Sound_Temp_TL1;
TMOD  |= 0x11;
ET0 = 1;
ET1    = 0;
TR0    = 0;
TR1 = 0;
EA    = 1;
}

void BeepTimer0(void) interrupt 1 //音符發生中斷
{
static unsigned char i;
BeepIO = !BeepIO;
TH0 = Sound_Temp_TH0;
TL0 = Sound_Temp_TL0;
i++;
if(i==100)
{
i=0;
value++;
if(value==5)value=0;
}

}
//**************************************************************************
void Play(unsigned char *Sound,unsigned char Signature,unsigned Octachord,unsigned int Speed)
{
unsigned int NewFreTab[12]; //新的頻率表
unsigned char i,j;
unsigned int Point,LDiv,LDiv0,LDiv1,LDiv2,LDiv4,CurrentFre,Temp_T,SoundLength;
unsigned char Tone,Length,SL,SH,SM,SLen,XG,FD;
for(i=0;i<12;i++) // 根據調號及升降八度來生成新的頻率表
{
j = i + Signature;
if(j > 11)
{
j = j-12;
NewFreTab[i] = FreTab[j]*2;
}
else
NewFreTab[i] = FreTab[j];

if(Octachord == 1)
NewFreTab[i]>>=2;
else if(Octachord == 3)
NewFreTab[i]<<=2;
}

SoundLength = 0;
while(Sound[SoundLength] != 0x00) //計算歌曲長度
{
SoundLength+=2;
}

Point = 0;
Tone = Sound[Point];
Length = Sound[Point+1]; // 讀出第一個音符和它時時值

LDiv0 = 12000/Speed; // 算出1分音符的長度(幾個10ms)
LDiv4 = LDiv0/4; // 算出4分音符的長度
LDiv4 = LDiv4-LDiv4*SOUND_SPACE; // 普通音最長間隔標準
TR0    = 0;
TR1 = 1;
while(Point < SoundLength)
{
SL=Tone%10; //計算出音符
SM=Tone/10%10; //計算出高低音
SH=Tone/100; //計算出是否升半
CurrentFre = NewFreTab[SignTab[SL-1]+SH]; //查出對應音符的頻率
if(SL!=0)
{
if (SM==1) CurrentFre >>= 2; //低音
if (SM==3) CurrentFre <<= 2; //高音
Temp_T = 65536-(50000/CurrentFre)*10/(12000000/SYSTEM_OSC);//計算計數器初值
Sound_Temp_TH0 = Temp_T/256;
Sound_Temp_TL0 = Temp_T%256;
TH0 = Sound_Temp_TH0;
TL0 = Sound_Temp_TL0 + 12; //加12是對中斷延時的補償
}
SLen=LengthTab[Length%10]; //算出是幾分音符
XG=Length/10%10; //算出音符類型(0普通1連音2頓音)
FD=Length/100;
LDiv=LDiv0/SLen; //算出連音音符演奏的長度(多少個10ms)
if (FD==1)
LDiv=LDiv+LDiv/2;
if(XG!=1)
if(XG==0) //算出普通音符的演奏長度
if (SLen<=4)
LDiv1=LDiv-LDiv4;
else
LDiv1=LDiv*SOUND_SPACE;
else
LDiv1=LDiv/2; //算出頓音的演奏長度
else
LDiv1=LDiv;
if(SL==0) LDiv1=0;
LDiv2=LDiv-LDiv1; //算出不發音的長度
      if (SL!=0)
{
TR0=1;
for(i=LDiv1;i>0;i--) //發規定長度的音
{
while(TF1==0);
TH1 = Sound_Temp_TH1;
TL1 = Sound_Temp_TL1;
TF1=0;
}
}
if(LDiv2!=0)
{
TR0=0; BeepIO=0;
for(i=LDiv2;i>0;i--) //音符間的間隔
{
while(TF1==0);
TH1 = Sound_Temp_TH1;
TL1 = Sound_Temp_TL1;
TF1=0;
}
}
Point+=2;
Tone=Sound[Point];
Length=Sound[Point+1];
}
BeepIO = 0;
}
//**************************************************************************
#endif

數碼八音盒.docx

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