delay.lst

51单片机的AD程序

C51 COMPILER V8.08   DELAY                                                                 06/20/2007 16:16:06 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE DELAY
OBJECT MODULE PLACED IN delay.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE delay.c BROWSE DEBUG OBJECTEXTEND TABS(2)

line level    source

   1          //========================================================
   2          //51单片机外部晶振为12Mhz
   3          //========================================================
   4          
   5          #include<intrins.h> // 声明了_nop_()
   6          /*
   7          //1us延时
   8          void delay_1us(void)
   9          {
  10            _nop_(); // 产生一条NOP指令
  11          }
  12          //Nus延时
  13          void delay_us(unsigned int j)
  14          {
  15          while(j!=0)
  16          {
  17          delay_1us();
  18          j--;
  19          }
  20          }
  21          
  22          void delay_50us(unsigned int t) 
  23          { 
  24          unsigned char j; 
  25          for(;t>0;t--) 
  26          for(j=19;j>0;j--); 
  27          } 
  28          */
  29          
  30          
  31          /*1ms延时*/
  32          void delay_1ms(void)
  33          {                          
  34   1      unsigned int i;        /*试过改成unsigned char类型，延时就变了，证明不同类型，C语言执行的效率是不同的*/
  35   1      for(i=0;i<125;i++);
  36   1      }
  37          /*
  38          //Nms延时
  39          void delay_ms(unsigned int n)
  40          {
  41          unsigned int i;
  42          for(i=0;i<n;i++)
  43          delay_1ms();
  44          }
  45          */


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     15    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
C51 COMPILER V8.08   DELAY                                                                 06/20/2007 16:16:06 PAGE 2   

END OF MODULE INFORMATION.


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