main.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  MAIN                                                                   04/19/2001 11:30:49 PAGE 1   


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

stmt level    source

   1          /*------------------------------------------------------------------*-
   2          
   3             Main.C (v1.00)
   4          
   5            ------------------------------------------------------------------
   6             
   7             Demonstration of function pointers.
   8          
   9          
  10             COPYRIGHT
  11             ---------
  12          
  13             This code is from the book:
  14          
  15             PATTERNS FOR TIME-TRIGGERED EMBEDDED SYSTEMS by Michael J. Pont 
  16             [Pearson Education, 2001; ISBN: 0-201-33138-1].
  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 "Printf51.h"
  26          #include <stdio.h>
  27          
  28          // ------ Private function prototypes ------------------------------
  29          void Square_Number(int, int*);
  30          
  31          /* ................................................................. */
  32          /* ................................................................. */
  33          
  34          int main(void)
  35             {
  36   1         int a = 2, b = 3;      
  37   1         void (* pFn)(int, int*); /* Declares pFn to be a pointer to fn with 
  38   1                                     int and int pointer parameters 
  39   1                                     (returning void) */
  40   1         int Result_a, Result_b;
  41   1         
  42   1         // Prepare to use printf() [in Keil hardware simulator]
  43   1         Printf51_Init();
  44   1      
  45   1         pFn = Square_Number;   // pFn holds address of Square_Number 
  46   1       
  47   1         printf("Function code starts at address: %u\n", (tWord) pFn);
  48   1         printf("Data item a starts at address:   %u\n\n", (tWord) &a);
  49   1         
  50   1         // Call 'Square_Number' in the conventional way
  51   1         Square_Number(a,&Result_a);
  52   1         
  53   1         // Call 'Square_Number' using function pointer
  54   1         (*pFn)(b,&Result_b);
  55   1                               
C51 COMPILER V6.10  MAIN                                                                   04/19/2001 11:30:49 PAGE 2   

  56   1         printf("%d squared is %d (using normal fn call)\n", a, Result_a); 
  57   1         printf("%d squared is %d (using fn pointer)\n", b, Result_b); 
  58   1      
  59   1         while(1);
  60   1      
  61   1         return 0;
  62   1         }
  63          
  64          /*------------------------------------------------------------------*/
  65          
  66          void Square_Number(int a, int* b)
  67             {
  68   1         // Demo - calculate square of a
  69   1         *b = a * a;
  70   1         }
  71          
  72          /*------------------------------------------------------------------*-
  73            ---- END OF FILE -------------------------------------------------
  74          -*------------------------------------------------------------------*/
  75          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    149    ----
   CONSTANT SIZE    =    153    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      11
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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