delay_loop.lst

来自「Embedded C 这本书的范例光碟程式」· LST 代码 · 共 78 行

C51 COMPILER V6.21  DELAY_LOOP                                                             01/23/2002 17:24:56 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             COPYRIGHT
  10             ---------
  11          
  12             This code is associated with the book:
  13          
  14             EMBEDDED C by Michael J. Pont 
  15             [Pearson Education, 2002: ISBN: 0-201-79523-X].
  16          
  17             This code is copyright (c) 2001 by Michael J. Pont.
  18           
  19             See book for copyright details and other information.
  20          
  21          -*------------------------------------------------------------------*/
  22          
  23          #include "Main.H"
  24          #include "Port.H"
  25          
  26          #include "Delay_loop.h"
  27          
  28          /*------------------------------------------------------------------*-
  29          
  30            DELAY_LOOP_Wait()
  31          
  32            Delay duration varies with parameter.  
  33          
  34            Parameter is, *ROUGHLY*, the delay, in milliseconds,
  35            on 12MHz 8051 (12 osc cycles).
  36          
  37            You need to adjust the timing for your application!
  38          
  39          -*------------------------------------------------------------------*/
  40          void DELAY_LOOP_Wait(const tWord DELAY_MS)
  41             {
  42   1         tWord x, y;
  43   1      
  44   1         for (x = 0; x <= DELAY_MS; x++)
  45   1            {
  46   2            for (y = 0; y <= 120; y++);
  47   2            }
  48   1         }
  49          
  50          /*------------------------------------------------------------------*-
  51            ---- END OF FILE -------------------------------------------------
  52          -*------------------------------------------------------------------*/


MODULE INFORMATION:   STATIC OVERLAYABLE
C51 COMPILER V6.21  DELAY_LOOP                                                             01/23/2002 17:24:56 PAGE 2   

   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)