main.lst

基于at89c51单片机的mp3 ad转换实验

C51 COMPILER V7.50   MAIN                                                                  01/15/2006 18:24:13 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE main.c

line level    source

   1          #include "AT89C51SND1_REG.H"
   2          #include "MCU_UART.H"
   3          
   4          #define LED          P3_5
   5          
   6          #define ADIDL 0x40
   7          #define ADEN  0x20
   8          #define ADEOC 0x10
   9          #define ADSST 0x08
  10          #define ADCS  0x01
  11          
  12          void delay()
  13          {
  14   1              unsigned char i,j;
  15   1              for(i=0;i<100;i++)
  16   1                 for(j=0;j<255;j++);
  17   1      }
  18          main()
  19          {
  20   1              unsigned char i;
  21   1              unsigned char adc_value;
  22   1              init_uart();
  23   1              printu("JMBIE MP3 EXP5: A\D Convertion.\n");
  24   1      
  25   1              ADCLK = 0x0f;   //设置ADC的时钟分频系数
  26   1          ADCON |= ADEN;      //使能ADC
  27   1              for(i=0;i<5;i++);
  28   1              
  29   1              ADCON |= ADCS;  //选择通道0
  30   1      //      ADCON &=~ADCS;  //选择通道1
  31   1          
  32   1              while(1)
  33   1              {
  34   2      //       ADCON |= ADIDL; //转换期间挂起CPU核    
  35   2               ADCON |= ADSST; //启动转换
  36   2               while(!(ADCON & ADEOC));         //等待转换结束
  37   2               ADCON &= ~ADEOC;       //软件清除结束标志
  38   2               adc_value = ADDH;
  39   2           printu("          \r");
  40   2               printuf("A/D = %d\r",adc_value);
  41   2           (adc_value>128)?(LED = 0):(LED = 1);
  42   2               delay();
  43   2              }
  44   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     92    ----
   CONSTANT SIZE    =     54    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.

C51 COMPILER V7.50   MAIN                                                                  01/15/2006 18:24:13 PAGE 2   


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