main.lst

这是一本在网上很难找到的教程了

C51 COMPILER V7.07   MAIN                                                                  07/05/2006 04:01:53 PAGE 1   


C51 COMPILER V7.07, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: c:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #define uchar unsigned char //定义一下方便使用
   2          #define uint  unsigned int
   3          #define ulong unsigned long
   4          #include <reg52.h>     //包括一个52标准内核的头文件
   5          
   6          char code dx516[3] _at_ 0x003b;//这是为了仿真设置的
   7          
   8          sbit    BEEP=P1^7; //喇叭输出脚
   9          
  10          uchar th0_f; //在中断中装载的T0的值高8位
  11          uchar tl0_f; //在中断中装载的T0的值低8位
  12          
  13          //T0的值,及输出频率对照表
  14          uchar code freq[36*2]={
  15                  0xA9,0xEF,//00220HZ ,1   //0
  16                  0x93,0xF0,//00233HZ ,1#
  17                  0x73,0xF1,//00247HZ ,2
  18                  0x49,0xF2,//00262HZ ,2#
  19                  0x07,0xF3,//00277HZ ,3
  20                  0xC8,0xF3,//00294HZ ,4
  21                  0x73,0xF4,//00311HZ ,4#
  22                  0x1E,0xF5,//00330HZ ,5 
  23                  0xB6,0xF5,//00349HZ ,5#
  24                  0x4C,0xF6,//00370HZ ,6
  25                  0xD7,0xF6,//00392HZ ,6#
  26                  0x5A,0xF7,//00415HZ ,7    
  27                  0xD8,0xF7,//00440HZ 1     //12
  28                  0x4D,0xF8,//00466HZ 1#    //13
  29                  0xBD,0xF8,//00494HZ 2     //14
  30                  0x24,0xF9,//00523HZ 2#    //15
  31                  0x87,0xF9,//00554HZ 3     //16
  32                  0xE4,0xF9,//00587HZ 4     //17
  33                  0x3D,0xFA,//00622HZ 4#    //18
  34                  0x90,0xFA,//00659HZ 5     //19
  35                  0xDE,0xFA,//00698HZ 5#    //20
  36                  0x29,0xFB,//00740HZ 6     //21
  37                  0x6F,0xFB,//00784HZ 6#    //22
  38                  0xB1,0xFB,//00831HZ 7     //23
  39                  0xEF,0xFB,//00880HZ `1
  40                  0x2A,0xFC,//00932HZ `1#
  41                  0x62,0xFC,//00988HZ `2
  42                  0x95,0xFC,//01046HZ `2#
  43                  0xC7,0xFC,//01109HZ `3
  44                  0xF6,0xFC,//01175HZ `4
  45                  0x22,0xFD,//01244HZ  `4#
  46                  0x4B,0xFD,//01318HZ `5
  47                  0x73,0xFD,//01397HZ `5#
  48                  0x98,0xFD,//01480HZ `6
  49                  0xBB,0xFD,//01568HZ `6#
  50                  0xDC,0xFD,//01661HZ `7     //35
  51          };
  52          
  53          //定时中断0,用于产生唱歌频率
  54          timer0() interrupt 1 
  55          {
C51 COMPILER V7.07   MAIN                                                                  07/05/2006 04:01:53 PAGE 2   

  56   1          TL0=tl0_f;TH0=th0_f;  //调入预定时值
  57   1          BEEP=~BEEP;           //取反音乐输出IO
  58   1              P2=~P2;
  59   1      }
  60          
  61          //音阶声音自动输出试验
  62          void main(void) // 主程序
  63          {
  64   1              ulong n;
  65   1              uchar i;
  66   1      
  67   1              uchar code jie8[8]={12,14,16,17,19,21,23,24};//1234567`1八个音符在频率表中的位置
  68   1      
  69   1              TMOD = 0x01;  //使用定时器0的16位工作模式
  70   1              TR0 = 1;
  71   1              ET0 = 1;
  72   1              EA = 1;
  73   1      
  74   1              while(1)
  75   1              {
  76   2                       for(i=0;i<8;i++)       //循环播放8个音符
  77   2                       {
  78   3                              
  79   3                              tl0_f=freq[jie8[i]*2];    //置一个音符的值
  80   3                              th0_f=freq[jie8[i]*2+1];
  81   3                              for(n=0;n<50000;n++);   //延时1秒左右
  82   3                              
  83   3                       }
  84   2              }
  85   1      }
  86          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    124    ----
   CONSTANT SIZE    =     80    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      2       5
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)