ex17.lst

8051单片机C语言设计完全手册

C51 COMPILER V6.02  EX17                                                                   09/15/2002 22:33:55 PAGE 1   


C51 COMPILER V6.02, COMPILATION OF MODULE EX17
OBJECT MODULE PLACED IN .\ex17.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\ex17.c DEBUG OBJECTEXTEND

stmt level    source

   1          #include <REG52.H>                /* special function register declarations   */
   2                                            /* for the intended 8051 derivative         */
   3          
   4          #include <stdio.h>                /* prototype declarations for I/O functions */
   5          #include <math.h>
   6          
   7          #ifdef MONITOR51                         /* Debugging with Monitor-51 needs   */
              char code reserve [3] _at_ 0x23;         /* space for serial interrupt if     */
              #endif                                   /* Stop Exection with Serial Intr.   */
  10                                                   /* is enabled                        */
  11          
  12          
  13          /*------------------------------------------------
  14          The main C function.  Program execution starts
  15          here after stack initialization.
  16          ------------------------------------------------*/
  17          void main (void) {
  18   1      
  19   1      	double pi,t;
  20   1      	long int n,s;
  21   1      /*------------------------------------------------
  22   1      Setup the serial port for 1200 baud at 16MHz.
  23   1      ------------------------------------------------*/
  24   1      #ifndef MONITOR51
  25   1          SCON  = 0x50;		        /* SCON: mode 1, 8-bit UART, enable rcvr      */
  26   1          TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
  27   1          TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
  28   1          TR1   = 1;                  /* TR1:  timer 1 run                          */
  29   1          TI    = 1;                  /* TI:   set TI to send first char of UART    */
  30   1      #endif
  31   1      /*------------------------------------------------
  32   1      Note that an embedded program never exits (because
  33   1      there is no operating system to return to).  It
  34   1      must loop and execute forever.
  35   1      ------------------------------------------------*/
  36   1      	t=1.0;
  37   1      	n=1;
  38   1      	s=1;
  39   1      	pi=0.0;
  40   1      	while(fabs(t)>=1e-6)
  41   1      	{
  42   2      		pi=pi+t;
  43   2      		n=n+2;
  44   2      		s=-s;
  45   2      		t=(float)(s)/(float)(n);
  46   2      	}
  47   1      	pi=pi*4.0; 
  48   1      	printf("pi=%lf\n",pi);
  49   1          while (1) {};
  50   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    242    ----
   CONSTANT SIZE    =      8    ----
C51 COMPILER V6.02  EX17                                                                   09/15/2002 22:33:55 PAGE 2   

   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      16
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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