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標(biāo)題: 【求助】51單片機(jī)電子琴，1-7按鍵播放音符，8按鍵自動(dòng)播放音樂(lè) [打印本頁(yè)]

作者: 無(wú)所謂shine 時(shí)間: 2017-6-22 09:33
標(biāo)題: 【求助】51單片機(jī)電子琴，1-7按鍵播放音符，8按鍵自動(dòng)播放音樂(lè)
學(xué)校實(shí)訓(xùn)，要求51實(shí)現(xiàn)電子琴，要求如題。
數(shù)碼管為共陰數(shù)碼管，但多了595芯片
程序借鑒了一部分網(wǎng)上內(nèi)容，目前可以實(shí)現(xiàn)1-7的發(fā)音和數(shù)碼管顯示，但按8按鍵卻蜂鳴器長(zhǎng)鳴，不知道什么地方出錯(cuò)
希望各位大神幫忙看下

#include <reg51.h>
#define uchar unsigned char
#define uint unsigned int

sbit BeepIO =P1^7;
sbit DI1 =P1^0;
sbit DI2 =P1^1;
sbit DI3 =P1^2;
sbit DI4 =P1^3;
sbit DIO =P1^4;
sbit RCK =P1^5;
sbit SCLK =P1^6;

uint tune[]={0xfc44,0xfcac,0xfd09,0xfd34,0xfd82,0xfdc8,0xfe07};
uchar code num[]={
               0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
               0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,
   0x00,0xff
   };
//void KeyProc(uchar dat);

uchar SoundTH;
uchar SoundTL;
unsigned char Time;
unsigned char High,Low; //定時(shí)器預(yù)裝值的高8位和低8位

                     // 音階頻率表高八位
unsigned char code FREQH[]={
                     0xF2,0xF3,0xF5,0xF5,0xF6,0xF7,0xF8,
                     0xF9,0xF9,0xFA,0xFA,0xFB,0xFB,0xFC,0xFC, //1,2,3,4,5,6,7,8,i
                     0xFC,0xFD,0xFD,0xFD,0xFD,0xFE,
                     0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFF,
                           } ;
                     // 音階頻率表低八位
unsigned char code FREQL[]={
                     0x42,0xC1,0x17,0xB6,0xD0,0xD1,0xB6,
                     0x21,0xE1,0x8C,0xD8,0x68,0xE9,0x5B,0x8F, //1,2,3,4,5,6,7,8,i
                     0xEE,0x44, 0x6B,0xB4,0xF4,0x2D,
                     0x47,0x77,0xA2,0xB6,0xDA,0xFA,0x16,
                              };

                        //世上只有媽媽好數(shù)據(jù)表
unsigned char code MUSIC[]={ 6,2,3,    5,2,1,    3,2,2, 5,2,2, 1,3,2, 6,2,1, 5,2,1,
                  6,2,4,    3,2,2,    5,2,1, 6,2,1,    5,2,2, 3,2,2,    1,2,1,
                  6,1,1,    5,2,1,    3,2,1, 2,2,4,    2,2,3, 3,2,1, 5,2,2,
                  5,2,1,    6,2,1,    3,2,2, 2,2,2, 1,2,4, 5,2,3,    3,2,1,
                  2,2,1,    1,2,1,    6,1,1, 1,2,1,    5,1,6, 0,0,0
                                    };
void KeyProc(uchar dat);
void delayTips(unsigned char t);
void PlaySong();

void Song()
{
uchar i;
uchar k;
i=0;
      while(i<100)
      {
         k=MUSIC[i]+7*MUSIC[i+1]-1;//去音符振蕩頻率所需數(shù)據(jù)
         High=FREQH[k];
         Low=FREQL[k];
         Time=MUSIC[i+2];       //節(jié)拍時(shí)長(zhǎng)
         i=i+3;
      PlaySong();
// delayTips(Time); //延時(shí)所需要的節(jié)拍
   if(P0==0xef)
   {
   while(P0==0xef);
   break;
   }
      }
  // PlaySong();
   TR0=0;
}

//延時(shí)函數(shù)大約約2*z+5us
void delay2xus(unsigned char z)
{
while(z--);
}

// 延時(shí)函數(shù)大約約1ms
void delayms(unsigned char x)
{
while(x--)
{
   delay2xus(245);
   delay2xus(245);
}
}

//節(jié)拍延時(shí)函數(shù)
void delayTips(unsigned char t)
{
unsigned char i;
   for(i=0;i<t;i++)
{
      delayms(250);
}
TR0=0;
}

//播放音樂(lè)的函數(shù)
void PlaySong()
{
TH0=High;//賦值定時(shí)器時(shí)間，決定頻率
TL0=Low;
TR0=1;    //打開(kāi)定時(shí)器
delayTips(Time); //延時(shí)所需要的節(jié)拍
}

/*
//void KeyProc(uchar dat);

void Song()
{
uchar i;
uchar k;
i=0;
   while(i<100)
      {
         k=MUSIC[i]+7*MUSIC[i+1]-1;//去音符振蕩頻率所需數(shù)據(jù)
         High=FREQH[k];
         Low=FREQL[k];
         Time=MUSIC[i+2];       //節(jié)拍時(shí)長(zhǎng)
         i=i+3;
      }
PlaySong();
}
*/

void LEDIO(uchar x)
{
uchar i;
for(i=0;i<8;i++)
{
   if(x&0x80)
   DIO = 1;
   else
   DIO = 0;

   SCLK = 0;
   SCLK = 1;
   x <<= 1;
}
}
//數(shù)據(jù)送入74HC595的并口輸出寄存器
void LEDRCK()
{
  RCK = 0;
  RCK = 1;
}
//延時(shí)50*T時(shí)間函數(shù)
void delay_50ms(uint t)
{
uint j;
for(;t>0;t--)
for(j=6254;j>0;j--)
         ;
}
/*void LEDdisplay()
{
  uchar i;
  for(i=0;i<18;)
  {
LEDIO(num[i]);
LEDRCK();
delay_50ms(20);
i++;
if(i==18)
i=0;
  }
}
*/
void main()
{
uchar dat;
TMOD = 0X01;
ET0 = 1;
TR0 = 0;
EA = 1;

DI1 =1;
DI2 =1;
DI3 =1;
DI4 =1;

while(1)
{ dat=~P0;
   KeyProc(dat);
}
}

void KeyProc(uchar dat)
{
uchar i;
if(dat==0x00)
{
   TR0=0;BeepIO=1;
   return;
}
switch(dat)
{
   case 0x01: i=0;
               break;
   case 0x02: i=1;
               break;
   case 0x04: i=2;
               break;
   case 0x08: i=3;
               break;
   case 0x10: i=4;
               break;
   case 0x20: i=5;
      break;
   case 0x40: i=6;
               break;
   case 0x80: i=7;
               break;
   default:break;
   }
   if(i<7)
   {
   LEDIO(num[i+1]);
   LEDRCK();

   SoundTH =tune[i]/256;
   SoundTL =tune[i]%256;
   TR0=1;}
   else
   {Song();

   }
}

void BeepTimer()interrupt 1
{
  BeepIO=!BeepIO;
  TH0= SoundTH;
  TL0= SoundTL;
}

作者: 無(wú)所謂shine 時(shí)間: 2017-6-22 13:43
自己頂下

作者: 溶月淡風(fēng) 時(shí)間: 2017-12-17 21:53
調(diào)試有錯(cuò)

作者: 小明1939604039 時(shí)間: 2017-12-17 22:08
你按鍵沒(méi)有消抖

作者: 郝炯 時(shí)間: 2017-12-17 22:59
消抖動(dòng)

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