pc_o_t1.lst

使用Keil uVision2下C语言开发的防盗报警系统

C51 COMPILER V6.21  PC_O_T1                                                                04/16/2007 01:05:51 PAGE 1   


C51 COMPILER V6.21, COMPILATION OF MODULE PC_O_T1
OBJECT MODULE PLACED IN PC_O_T1.OBJ
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE PC_O_T1.c OPTIMIZE(6,SPEED) BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*------------------------------------------------------------------*-
   2          
   3             PC_O_T1.C (v1.00)
   4          
   5            ------------------------------------------------------------------
   6          
   7             Simple write-only PC link library Version A (generic)
   8             [Sends data to PC - cannot receive data from PC]
   9          
  10             Uses the UART, and Pin 3.1 (Tx) 
  11          
  12             See text for details (Chapter 9).
  13          
  14             COPYRIGHT
  15             ---------
  16          
  17             This code is associated with the book:
  18          
  19             EMBEDDED C by Michael J. Pont 
  20             [Pearson Education, 2002: ISBN: 0-201-79523-X].
  21          
  22             This code is copyright (c) 2001 by Michael J. Pont.
  23           
  24             See book for copyright details and other information.
  25          
  26          -*------------------------------------------------------------------*/
  27          
  28          #include "Main.h"
  29          #include "PC_O_T1.h"
  30          
  31          // ------ Public variable declarations -----------------------------
  32          
  33          extern tByte Out_written_index_G;  
  34          extern tByte Out_waiting_index_G;  
  35          
  36          /*------------------------------------------------------------------*-
  37          
  38            PC_LINK_O_Init_T1()
  39          
  40            This version uses T1 for baud rate generation.
  41          
  42            Uses 8051 (internal) UART hardware
  43          
  44          -*------------------------------------------------------------------*/
  45          void PC_LINK_O_Init_T1(const tWord BAUD_RATE)
  46             {
  47   1         PCON &= 0x7F;   // Set SMOD bit to 0 (don't double baud rates)
  48   1      
  49   1         //  Receiver disabled
  50   1         //  8-bit data, 1 start bit, 1 stop bit, variable baud rate (asynchronous)
  51   1         SCON = 0x42;
  52   1      
  53   1         TMOD |= 0x20;   // T1 in mode 2, 8-bit auto reload
  54   1      
  55   1         TH1 = (256 - (tByte)((((tLong)OSC_FREQ / 100) * 3125) 
C51 COMPILER V6.21  PC_O_T1                                                                04/16/2007 01:05:51 PAGE 2   

  56   1                  / ((tLong) BAUD_RATE * OSC_PER_INST * 1000)));
  57   1      
  58   1         TL1 = TH1;  
  59   1         TR1 = 1;  // Run the timer
  60   1         TI = 1;   // Send first character (dummy)
  61   1      
  62   1         // Set up the buffers for reading and writing
  63   1         Out_written_index_G = 0;
  64   1         Out_waiting_index_G = 0;
  65   1      
  66   1         // Interrupt *NOT* enabled
  67   1         ES = 0;
  68   1         }
  69          
  70          /*------------------------------------------------------------------*-
  71            ---- END OF FILE -------------------------------------------------
  72          -*------------------------------------------------------------------*/
  73          
  74          
  75          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     60    ----
   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)