数字音乐盒设计(3)

//

unsigned int LDiv,LDiv0,LDiv1,LDiv2,LDiv4,CurrentFre,Temp_T,SoundLength ; unsigned char Tone,Length,SL,SH,SM,SLen,XG,FD; temp=Sound;

for(i=0;i<12;i++) // 根据调号及升降八度来生成新的频率表 { // write_com(0x80+0x48);//（） // write_data(tab5[num]); 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) //计算歌曲长度 { SoundLength+=2; }

Point = 0;

Tone = Sound[Point]; Length = Sound[Point+1]; // 读出第一个音符和它时时值

LDiv0 = 12000/Speed; // 算出1分音符的长度(几个10ms) LDiv4 = LDiv0/4; // 算出4分音符的长度 LDiv4 = LDiv4-LDiv4*SOUND_SPACE; // 普通音最长间隔标准 TR0 = 0; TR1 = 1;

while(Point

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if (SM==1) CurrentFre >>= 2; //低音 if (SM==3) CurrentFre <= 2; //高音 Temp_T = 65536-(50000/CurrentFre)*10/(12000000/SYSTEM_OSC);//计算计数器初值 Sound_Temp_TH0 = Temp_T/256; Sound_Temp_TL0 = Temp_T%6; TH0 = Sound_Temp_TH0; TL0 = Sound_Temp_TL0 + 12; //加12是对中断延时的补偿 }

SLen=LengthTab[Length]; //算出是几分音符 XG=Length/10; //算出音符类型(0普通1连音2顿音) FD=Length/100;

LDiv=LDiv0/SLen; //算出连音音符演奏的长度(多少个10ms) if (FD==1) LDiv=LDiv+LDiv/2; if(XG!=1) if(XG==0) //算出普通音符的演奏长度 if (SLen=4) LDiv1=LDiv-LDiv4; else LDiv1=LDiv*SOUND_SPACE; else LDiv1=LDiv/2; //算出顿音的演奏长度 else LDiv1=LDiv; if(SL==0) LDiv1=0; LDiv2=LDiv-LDiv1; //算出不发音的长度 if (SL!=0) { TR0=1; for(i=LDiv1;i>0;i--) //发规定长度的音 { 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--) //音符间的间隔 {

while(TF1==0);

TH1 = Sound_Temp_TH1;

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TL1 = Sound_Temp_TL1; TF1=0; } } Point+=2; Tone=Sound[Point]; Length=Sound[Point+1]; } BeepIO = 0; }

void Delay1ms(unsigned int count) {

unsigned int i,j; for(i=0;i

void init0() { IP=0x01; // IT0=0; //低电平触发 IT0=1; //下降沿触发 EX0=1;

// IT1=0; //低电平触发 IT1=1; //下降沿触发 EX1=1; EA=1; }

void InitialSound(void) { BeepIO = 0; Sound_Temp_TH1 = (65535-(1/1200)*SYSTEM_OSC)/256; // 计算TL1应装入的初值 (10ms的初装值) Sound_Temp_TL1 = (65535-(1/1200)*SYSTEM_OSC)%6; // 计算TH1应装入的初值 TH1 = Sound_Temp_TH1; TL1 = Sound_Temp_TL1; TMOD |= 0x11; ET0 = 1; ET1 = 0; TR0 = 0;

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TR1 = 0; EA = 1; }

void w1() { num=1; Point=0; Sound=Music1; lcdflag=1; }

void w2() { num=2; Point=0; Sound=Music2; lcdflag=1; }

void w3() { num=3; Point=0; Sound=Music3; lcdflag=1; }

void w4() { num=4; Point=0; Sound=Music4; lcdflag=1; }

void w5() { num=5; Point=0; Sound=Music5; lcdflag=1; }

void w6() { num=6; Point=0; Sound=Music6; lcdflag=1; }

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void w7() { num=7; Point=0; Sound=Music7; lcdflag=1; }

void w8() { num=8; Point=0; Sound=Music8; lcdflag=1; }

void w9() { num=9; Point=0; Sound=Music9; lcdflag=1; }

void w10() { num=10; Point=0; Sound=Music10; lcdflag=1; }

void Key0() {

if(key0==0) {

delay_ms(10); if(key0==0) {

while(!key0) { while(!key0) { }

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