单片机课程设计报告 第4页

单片机课程设计报告 第4页
RTAB2:
     MOV A,R1
     MOV DPTR,#TABLE1
     MOVC A,@A+DPTR
     MOV R2,A
TTAB2: MOV A,R1
     MOV DPTR,#TONE2
     MOVC A,@A+DPTR
     MOV R3,A
     INC R1
   MOV A,R1
   MOV DPTR,#TONE2
   MOVC A,@A+DPTR
   MOV R4,A
     SETB P2.4
LOOP2: MOV R5,#9BH
MAIN2:
      MOV TMOD,#01H
     MOV TL0,R4
     MOV TH0,R3
     SETB TR0
WAITR:JNB TF0,WAITR
     CLR TF0
     CPL P2.4
MAYA1:JB P3.3,MAYB1
      JB P3.5,MAYB1
      LJMP RB
MAYB1:JB P3.2,BACK
      JB P3.4,BACK
      LJMP MUSTART1
BACK:LJMP JIELI
RB:  DJNZ R5,MAIN2
     DJNZ R2,LOOP2
   
INC R0
INC R1
CJNE R1,#64,RTAB2
LJMP KEYP0
TONE2:
DB 0FBH,68H,0FDH,6EH,0FDH,45H,0FCH,0EFH,0FCH,8FH,0FCH,8FH,0FCH,8FH,0FCH,5BH,0FCH,8FH
DB 0FCH,0EFH,0FDH,45H,0FBH,68H,0FBH,68H,0FCH,8FH,0FCH,5BH,0FBH,0E9H,0FBH,68H,0FBH,68H
DB 0FAH,0DBH,0FAH,8CH,0F9H,21H,0FAH,8CH,0FAH,0D8H,0FBH,68H,0FBH,68H,0FBH,68H,0FBH,68H
DB 0FBH,0E9H,0FBH,0E9H,0FBH,68H,0FBH,0E9H,0FCH,5BH,0FAH,8CH,0FCH,8FH,0FCH,8FH,0FCH,5BH
DB 0FCH,8FH,0FCH,0EFH,0FCH,0EFH,0FCH,0EFH,0FCH,8FH,0FDH,45H,0FDH,6EH,0FCH,0EFH
TABLE1:
DB 04,04,04,04,04,04,04,04,04,04
DB 04,05,04,04,04,04,04,04,04,04
DB 04,04,04,06,04,04,04,07,04,04
DB 04,04,04,06,04,04,04,07,04,04
DB 04,04,04,04
 
END

C语言程序：

/*SB1 1音  SB2 2音   SB3 3音  SB4 4音 SB1SB2  5音   SB2SB3  6音   SB3SB4  7音   SB1SB4  i音   SB1SB3 第一首歌  SB2SB4  第二首歌 */
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit BEEP=P2^4;
sbit K1=P3^2;
sbit K2=P3^3;
sbit K3=P3^4;
sbit K4=P3^5;
sbit L=P2^3;
uchar th0_f; //在中断中装载的T0的值高8位
uchar tl0_f; //在中断中装载的T0的值低8位
uchar keyscan(uchar key);  //键盘输入函数
void delay(uint t);  //延时函数
void display(uint i);  //数码管显示函数

uchar table[16]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E}; //共阳极数码管显示码
//                0    1    2    3    4    5    6    7    8    9    a    b    c    d    e    f 

uchar code freq[16]={
 0x21,0xF9,//262Hz,1
 0xE1,0xF9,//294Hz,2
 0x8C,0xFA,//330Hz,3
 0xD8,0xFA,//349Hz,4
 0x68,0xFB,//392Hz,5
 0xE9,0xFB,//440Hz,6
 0x58,0xFC,//494Hz,7
 0x8F,0xFC //523Hz,i
};
  uchar code freqgequ[18]={      //歌曲音调表
 0x00,0x00,
 0x44,0xFC,//1
 0xAE,0xFC,//2
 0x0A,0xFD,//3
 0x34,0xFD,//4
 0x82,0xFD,//5
 0xE2,0xFD,//6
 0x06,0xFE,//7
 0x22,0xFE//i
};

void play(uchar *diaodata,uchar *jiedata)
{
    uchar i,c=0;
    uint  n;

    TR0=1;
    for(i=0;diaodata[i]!=0;i++)
  {                         //逐个符号演奏
      tl0_f=freqgequ[diaodata[i]*2];    //取出对应的定时值送给T0
        th0_f=freqgequ[diaodata[i]*2+1];
        for(c=0;c<jiedata[i];c++)
    {   //按照音长延时，两首歌均为4/4拍，每拍延时为125ms
      for(n=0;n<8000;n++);       //单个音调的延时约2*8.6ms，乘上节拍
      if(K1==1&&K2==1&&K3==1&&K4==1)
    {                      //当按键松开,立即退出播放
         delay(20);
    if(K1==1&&K2==1&&K3==1&&K4==1)
    {
     TR0=0;
    }
    return;
      }
    }
        TR0=0;
        for(n=0;n<500;n++);    //音符间延时
     TR0=1;
    }
    TR0=0;
 L=1;
 BEEP=1;
}

//《祝你生日快乐》音符表
uchar code shengri[]={
1,1,2,1,4,3,1,1,2,1,5,4,1,1,8,6,4,3,2,8,7,8,7,6,4,5,4};

//《祝你生日快乐》节拍表
uchar code shengrijiepai[]={
9,3,12,12,12,24,9,3,12,12,12,24,
9,3,12,12,12,12,12,9,3,12,12,12,24,0
};

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