dog_at.lst

时间触发嵌入式系统设计模式:使用8051系列微控制器开发可靠应用

C51 COMPILER V6.10  DOG_AT                                                                 04/18/2001 13:37:08 PAGE 1   


C51 COMPILER V6.10, COMPILATION OF MODULE DOG_AT
OBJECT MODULE PLACED IN .\DOG_AT.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE .\DOG_AT.C OPTIMIZE(6,SPEED) BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*------------------------------------------------------------------*-
   2          
   3             Dog_AT.C (v1.00)
   4          
   5            ------------------------------------------------------------------
   6          
   7             Demonstration of watchdog timer facilities on Atmel 89S53.
   8          
   9             [Compiles and runs but does nothing useful]
  10          
  11             ==============================================================
  12          
  13             *** PORTABILITY NOTE ***
  14          
  15             If porting this code to a different chip, then
  16             take care when using 'idle mode'.  With *some* devices, 
  17             use of idle mode stops the internal watchdog timer; this 
  18             may not be what you require.
  19          
  20             In particular, please note that the scheduler code introduced 
  21             in Chapter 13 (and used throughout much of this book) makes 
  22             use of idle mode.  If using a watchdog timer with one of the 
  23             schedulers, you need to check the data sheet for your chosen 
  24             microcontroller and - if necessary - make the minor changes
  25             necessary to the file Sch51.c to prevent the scheduler
  26             using idle mode. 
  27          
  28             (In the AT89S53, use of idle mode does NOT stop the watchdog)
  29              
  30             ==============================================================
  31          
  32             COPYRIGHT
  33             ---------
  34          
  35             This code is from the book:
  36          
  37             PATTERNS FOR TIME-TRIGGERED EMBEDDED SYSTEMS by Michael J. Pont 
  38             [Pearson Education, 2001; ISBN: 0-201-33138-1].
  39          
  40             This code is copyright (c) 2001 by Michael J. Pont.
  41           
  42             See book for copyright details and other information.
  43          
  44          -*------------------------------------------------------------------*/
  45          
  46          #include "Dog_AT.h"
  47          
  48          /*------------------------------------------------------------------*/
  49          void WATCHDOG_Init(void)
  50             {
  51   1         // Set 512 ms watchdog
  52   1         // PS2 = 1; PS1 = 0; PS0 = 1
  53   1         // Set WDTRST = 1
  54   1         // Set WDTEN  = 1 - start the Watchdog 
  55   1         // 
C51 COMPILER V6.10  DOG_AT                                                                 04/18/2001 13:37:08 PAGE 2   

  56   1         // WMCON |= 10100011
  57   1         WMCON |= 0xA3;  
  58   1         } 
  59          
  60          /*------------------------------------------------------------------*-
  61            ---- END OF FILE -------------------------------------------------
  62          -*------------------------------------------------------------------*/
  63          
  64          
  65          
  66          
  67          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =      4    ----
   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)