delay_loop.lst

来自「Embedded C 这本书的范例光碟程式」· LST 代码 · 共 79 行

C51 COMPILER V6.21  DELAY_LOOP                                                             01/23/2002 17:22:31 PAGE 1   


C51 COMPILER V6.21, COMPILATION OF MODULE DELAY_LOOP
OBJECT MODULE PLACED IN Delay_loop.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE Delay_loop.c OPTIMIZE(6,SPEED) BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*------------------------------------------------------------------*-
   2          
   3             Delay_Loop.C (v1.00)
   4          
   5            ------------------------------------------------------------------
   6          
   7             Create a simple software delay using a loop. 
   8           
   9          
  10             COPYRIGHT
  11             ---------
  12          
  13             This code is associated with the book:
  14          
  15             EMBEDDED C by Michael J. Pont 
  16             [Pearson Education, 2002: ISBN: 0-201-79523-X].
  17          
  18             This code is copyright (c) 2001 by Michael J. Pont.
  19           
  20             See book for copyright details and other information.
  21           
  22          -*------------------------------------------------------------------*/
  23          
  24          #include "Main.H"
  25          #include "Port.H"
  26          
  27          #include "Delay_loop.h"
  28          
  29          /*------------------------------------------------------------------*-
  30          
  31            DELAY_LOOP_Wait()
  32          
  33            Delay duration varies with parameter.  
  34          
  35            Parameter is, *ROUGHLY*, the delay, in milliseconds,
  36            on 12MHz 8051 (12 osc cycles).
  37          
  38            You need to adjust the timing for your application!
  39          
  40          -*------------------------------------------------------------------*/
  41          void DELAY_LOOP_Wait(const tWord DELAY_MS)
  42             {
  43   1         tWord x, y;
  44   1      
  45   1         for (x = 0; x <= DELAY_MS; x++)
  46   1            {
  47   2            for (y = 0; y <= 120; y++);
  48   2            }
  49   1         }
  50          
  51          /*------------------------------------------------------------------*-
  52            ---- END OF FILE -------------------------------------------------
  53          -*------------------------------------------------------------------*/


C51 COMPILER V6.21  DELAY_LOOP                                                             01/23/2002 17:22:31 PAGE 2   

MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     32    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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