新人求帮助解惑，谢谢
大家好，因为有个程序很着急使用，但是却始终不太明白，想在这里请教一下。新人没有分数，还请见谅，如果可以请帮下吧~~程序比较多~想麻烦大家帮忙解释一下，如果可以的话帮忙画一个程序流程图~~
程序是关于4*4键盘的电子琴模拟
两个相关文件：PlayMusic.c
#include <REG52.H>
#include "SoundPlay.h"
#define uchar unsigned char
#define uint unsigned int
uchar code table[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};
uchar temp;
uint i,j;
void delay(uint x){
uint i;
for(i=0;i<x;i++);
}
void dou()
{
uint x=150;
while(x--){
BeepIO=0;
delay(120);
BeepIO=1;
delay(120);}
}
void re()
{
uint x=150;
while(x--){
BeepIO=0;
delay(115);
BeepIO=1;
delay(115);}
}
void mi()
{
uint x=150;
while(x--){
BeepIO=0;
delay(110);
BeepIO=1;
delay(110);}
}
void fa()
{
uint x=150;
while(x--){
BeepIO=0;
delay(105);
BeepIO=1;
delay(105);}
}
void so()
{
uint x=150;
while(x--){
BeepIO=0;
delay(100);
BeepIO=1;
delay(100);}
}
void la()
{
uint x=150;
while(x--){
BeepIO=0;
delay(95);
BeepIO=1;
delay(95);}
}
void si()
{
uint x=150;
while(x--){
BeepIO=0;
delay(90);
BeepIO=1;
delay(90);}
}
void doo()
{
uint x=150;
while(x--){
BeepIO=0;
delay(85);
BeepIO=1;
delay(85);}
}
void dou2()
{
uint x=150;
while(x--){
BeepIO=0;
delay(80);
BeepIO=1;
delay(80);}
}
void re2()
{
uint x=150;
while(x--){
BeepIO=0;
delay(75);
BeepIO=1;
delay(75);}
}
void mi2()
{
uint x=150;
while(x--){
BeepIO=0;
delay(70);
BeepIO=1;
delay(70);}
}
void fa2()
{
uint x=150;
while(x--){
BeepIO=0;
delay(65);
BeepIO=1;
delay(65);}
}
void so2()
{
uint x=150;
while(x--){
BeepIO=0;
delay(60);
BeepIO=1;
delay(60);}
}
void la2()
{
uint x=150;
while(x--){
BeepIO=0;
delay(55);
BeepIO=1;
delay(55);}
}
void si2()
{
uint x=150;
while(x--){
BeepIO=0;
delay(50);
BeepIO=1;
delay(50);}
}
void doo2()
{
uint x=150;
while(x--){
BeepIO=0;
delay(45);
BeepIO=1;
delay(45);}
}
void Delay1ms(unsigned int count)
{
unsigned int i,j;
for(i=0;i<count;i++)
for(j=0;j<120;j++);
}
//*****************************Music******************************************************
//生日快乐
unsigned char code Music_Girl[]={ 0x19,0x67, 0x19,0x04, 0x1A,0x02, 0x19,0x02, 0x15,0x02,
0x1B,0x01, 0x19,0x67, 0x19,0x04, 0x1A,0x02, 0x19,0x02,
0x20,0x02, 0x1F,0x01, 0x19,0x67, 0x19,0x04, 0x23,0x02,
0x21,0x02, 0x1F,0x02, 0x1B,0x0C, 0x1A,0x02, 0x18,0x67,
0x18,0x04, 0x21,0x02, 0x1F,0x02, 0x20,0x02, 0x1F,0x01,
0x00,0x00};
//一只哈巴狗
unsigned char code Music_Same[]={ 0x15,0x02, 0x15,0x02, 0x15,0x02, 0x16,0x02, 0x17,0x16,
0x17,0x02, 0x17,0x02, 0x17,0x02, 0x18,0x02, 0x19,0x16,
0x1A,0x02, 0x1A,0x02, 0x19,0x02, 0x18,0x02, 0x17,0x16,
0x19,0x02, 0x19,0x02, 0x16,0x03, 0x17,0x03, 0x15,0x16,
0x15,0x02, 0x15,0x02, 0x15,0x02, 0x16,0x02, 0x19,0x16,
0x17,0x02, 0x17,0x02, 0x17,0x02, 0x18,0x02, 0x19,0x16,
0x1A,0x02, 0x1A,0x02, 0x19,0x02, 0x18,0x02, 0x17,0x16,
0x19,0x02, 0x19,0x02, 0x16,0x02, 0x17,0x02, 0x15,0x16,
0x00,0x00 };
//两只蝴蝶
unsigned char code Music_Two[] ={ 0x17,0x03, 0x16,0x03, 0x17,0x01, 0x16,0x03, 0x17,0x03,
0x16,0x03, 0x15,0x01, 0x10,0x03, 0x15,0x03, 0x16,0x02,
0x16,0x0D, 0x17,0x03, 0x16,0x03, 0x15,0x03, 0x10,0x03,
0x10,0x0E, 0x15,0x04, 0x0F,0x01, 0x17,0x03, 0x16,0x03,
0x17,0x01, 0x16,0x03, 0x17,0x03, 0x16,0x03, 0x15,0x01,
0x10,0x03, 0x15,0x03, 0x16,0x02, 0x16,0x0D, 0x17,0x03,
0x16,0x03, 0x15,0x03, 0x10,0x03, 0x15,0x03, 0x16,0x01,
0x17,0x03, 0x16,0x03, 0x17,0x01, 0x16,0x03, 0x17,0x03,
0x16,0x03, 0x15,0x01, 0x10,0x03, 0x15,0x03, 0x16,0x02,
0x16,0x0D, 0x17,0x03, 0x16,0x03, 0x15,0x03, 0x10,0x03,
0x10,0x0E, 0x15,0x04, 0x0F,0x01, 0x17,0x03, 0x19,0x03,
0x19,0x01, 0x19,0x03, 0x1A,0x03, 0x19,0x03, 0x17,0x01,
0x16,0x03, 0x16,0x03, 0x16,0x02, 0x16,0x0D, 0x17,0x03,
0x16,0x03, 0x15,0x03, 0x10,0x03, 0x10,0x0D, 0x15,0x00,
0x19,0x03, 0x19,0x03, 0x1A,0x03, 0x1F,0x03, 0x1B,0x03,
0x1B,0x03, 0x1A,0x03, 0x17,0x0D, 0x16,0x03, 0x16,0x03,
0x16,0x0D, 0x17,0x01, 0x17,0x03, 0x17,0x03, 0x19,0x03,
0x1A,0x02, 0x1A,0x02, 0x10,0x03, 0x17,0x0D, 0x16,0x03,
0x16,0x01, 0x17,0x03, 0x19,0x03, 0x19,0x03, 0x17,0x03,
0x19,0x02, 0x1F,0x02, 0x1B,0x03, 0x1A,0x03, 0x1A,0x0E,
0x1B,0x04, 0x17,0x02, 0x1A,0x03, 0x1A,0x03, 0x1A,0x0E,
0x1B,0x04, 0x1A,0x03, 0x19,0x03, 0x17,0x03, 0x16,0x03,
0x17,0x0D, 0x16,0x03, 0x17,0x03, 0x19,0x01, 0x19,0x03,
0x19,0x03, 0x1A,0x03, 0x1F,0x03, 0x1B,0x03, 0x1B,0x03,
0x1A,0x03, 0x17,0x0D, 0x16,0x03, 0x16,0x03, 0x16,0x03,
0x17,0x01, 0x17,0x03, 0x17,0x03, 0x19,0x03, 0x1A,0x02,
0x1A,0x02, 0x10,0x03, 0x17,0x0D, 0x16,0x03, 0x16,0x01,
0x17,0x03, 0x19,0x03, 0x19,0x03, 0x17,0x03, 0x19,0x03,
0x1F,0x02, 0x1B,0x03, 0x1A,0x03, 0x1A,0x0E, 0x1B,0x04,
0x17,0x02, 0x1A,0x03, 0x1A,0x03, 0x1A,0x0E, 0x1B,0x04,
0x17,0x16, 0x1A,0x03, 0x1A,0x03, 0x1A,0x0E, 0x1B,0x04,
0x1A,0x03, 0x19,0x03, 0x17,0x03, 0x16,0x03, 0x0F,0x02,
0x10,0x03, 0x15,0x00, 0x00,0x00 };
//***********************************************************************************
main()
{
InitialSound();
while(1)
{
if(state_song){
Play(Music_Girl,0,3,360);
Delay1ms(500);
Play(Music_Same,0,3,360);
Delay1ms(500);
Play(Music_Two,0,3,360);
Delay1ms(500);
}
else
{
P2=0xfe;
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
switch(temp)
{
case 0xe0:dou();break;
case 0xd0:re();break;
case 0xb0:mi();break;
case 0x70:fa();break;
}
P2=0xfe;
temp=P2;
temp=temp&0xf0;
}
P2=0xfd;
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
switch(temp)
{
case 0xe0:P0=table[4];so();break;
case 0xd0:P0=table[5];la();break;
case 0xb0:P0=table[6];si();break;
case 0x70:P0=table[7];doo();break;
}
P2=0xfd;
temp=P2;
temp=temp&0xf0;
}
P2=0xfb;
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
switch(temp)
{
case 0xe0:P0=table[8];dou2();break;
case 0xd0:P0=table[9];re2();break;
case 0xb0:P0=table[10];mi2();break;
case 0x70:P0=table[11];fa2();break;
}
P2=0xfe;
temp=P2;
temp=temp&0xf0;
}
P2=0xf7;
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
switch(temp)
{
case 0xe0:P0=table[12];so2();break;
case 0xd0:P0=table[13];la2();break;
case 0xb0:P0=table[14];si2();break;
case 0x70:P0=table[15];doo2();break;
}
P2=0xfe;
temp=P2;
temp=temp&0xf0;
}
}
}
}
另一个相关文件：SoundPlay.h
/*说明**************************************************************************
曲谱存贮格式 unsigned char code MusicName{音高，音长，音高，音长...., 0,0}; 末尾:0,0 表示结束(Important)
音高由三位数字组成：
个位是表示 1~7 这七个音符
十位是表示音符所在的音区:1-低音，2-中音，3-高音;
百位表示这个音符是否要升半音: 0-不升，1-升半音。
音长最多由三位数字组成：
个位表示音符的时值，其对应关系是：
|数值(n): |0 |1 |2 |3 | 4 | 5 | 6
|几分音符: |1 |2 |4 |8 |16 |32 |64 音符=2^n
十位表示音符的演奏效果(0-2): 0-普通，1-连音，2-顿音
百位是符点位: 0-无符点，1-有符点
调用演奏子程序的格式
Play(乐曲名,调号,升降八度,演奏速度);
|乐曲名 : 要播放的乐曲指针,结尾以(0,0)结束;
|调号(0-11) : 是指乐曲升多少个半音演奏;
|升降八度(1-3) : 1:降八度, 2:不升不降, 3:升八度;
|演奏速度(1-12000): 值越大速度越快;
***************************************************************************/
#ifndef __SOUNDPLAY_H_REVISION_FIRST__
#define __SOUNDPLAY_H_REVISION_FIRST__
//**************************************************************************
#define SYSTEM_OSC 11059200 //定义晶振频率12000000HZ
#define SOUND_SPACE 4/5 //定义普通音符演奏的长度分率,//每4分音符间隔
#define play 1
#define stop 0
sbit BeepIO = P3^7; //定义输出管脚
unsigned int code FreTab[12] = { 262,277,294,311,330,349,369,392,415,440,466,494 }; //原始频率表
unsigned char code SignTab[7] = { 0,2,4,5,7,9,11 }; //1~7在频率表中的位置
unsigned char code LengthTab[7]= { 1,2,4,8,16,32,64 };
unsigned char Sound_Temp_TH0,Sound_Temp_TL0; //音符定时器初值暂存
unsigned char Sound_Temp_TH1,Sound_Temp_TL1; //音长定时器初值暂存
char state_song;
//**************************************************************************
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)%256; // 计算TH1应装入的初值
TH1 = Sound_Temp_TH1;
TL1 = Sound_Temp_TL1;
TMOD |= 0x11;
ET0 = 1;
ET1 = 0;
EX0 = 1;
EX1 = 1;
TR0 = 0;
TR1 = 0;
EA = 1;
IT0 = 1;
IT1 = 1;
}
void int0() interrupt 0
{
state_song =stop;
}
void BeepTimer0(void) interrupt 1 //音符发生中断
{
BeepIO = !BeepIO;
TH0 = Sound_Temp_TH0;
TL0 = Sound_Temp_TL0;
}
void int1() interrupt 2
{
state_song =play;
}
void Play(unsigned char *Sound,unsigned char Signature,unsigned Octachord,unsigned int Speed)
{
unsigned int NewFreTab[12]; //新的频率表
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++) // 根据调号及升降八度来生成新的频率表
{
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) //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 < SoundLength&&state_song)
{
SL=Tone%10; //计算出音符
SM=Tone/10%10; //计算出高低音
SH=Tone/100; //计算出是否升半
CurrentFre = NewFreTab[SignTab[SL-1]+SH]; //查出对应音符的频率
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);//计算计数器初值
Sound_Temp_TH0 = Temp_T/256;
Sound_Temp_TL0 = Temp_T%256;
TH0 = Sound_Temp_TH0;
TL0 = Sound_Temp_TL0 + 12; //加12是对中断延时的补偿
}
SLen=LengthTab[Length%10]; //算出是几分音符
XG=Length/10%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;
TL1 = Sound_Temp_TL1;
TF1=0;
}
}
Point+=2;
Tone=Sound[Point];
Length=Sound[Point+1];
}
BeepIO = 0;
}
//**************************************************************************
#endif
再次感谢能看完的人们~~恳请给点帮助
