C51 COMPILER V8.08   PC_O_IN                                                               06/30/2007 15:58:45 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE PC_O_IN
OBJECT MODULE PLACED IN PC_O_in.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE PC_O_in.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*------------------------------------------------------------------*-
   2          
   3             PC_O_in.C (v1.01)
   4          
   5            ------------------------------------------------------------------
   6          
   7             Simple PC link library version B (for c515c, internal baud rate)
   8          
   9             Uses the USART, and Pin 3.1 (Tx) 
  10          
  11             See text for details (Chapter 18).
  12          
  13          
  14             COPYRIGHT
  15             ---------
  16          
  17             This code is from the book:
  18          
  19             PATTERNS FOR TIME-TRIGGERED EMBEDDED SYSTEMS by Michael J. Pont 
  20             [Pearson Education, 2001; ISBN: 0-201-33138-1].
  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_in.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_Internal()
  39          
  40            This version uses internal baud rate generator on C5x5 family.
  41          
  42          -*------------------------------------------------------------------*/
  43          void PC_LINK_O_Init_Internal(const tWord BAUD_RATE)
  44             {
  45   1         tWord SRELplus1024;
  46   1         tWord SRELx;
  47   1      
  48   1         PCON &= 0x7F;   // Set SMOD bit to 0 (don't double baud rates)
  49   1      
  50   1         //  Receiver disabled
  51   1         //  8-bit data, 1 start bit, 1 stop bit, variable baud rate (asynchronous)
  52   1         SCON = 0x42;
  53   1      
  54   1         // Use the internal baudrate generator (80c5x5 family)
  55   1         ADCON0 |= 0x80;
C51 COMPILER V8.08   PC_O_IN                                                               06/30/2007 15:58:45 PAGE 2   

  56   1      
  57   1         // Set the baud rate (begin)
  58   1         SRELplus1024 = (tWord)((((tLong) OSC_FREQ / 100) * 3125) 
  59   1                           / ((tLong) BAUD_RATE * 1000));
  60   1      
  61   1         SRELx = 1024 - SRELplus1024;
  62   1      
  63   1         SRELL = (tByte)(SRELx & 0x00FF);
  64   1         SRELH = (tByte)((SRELx & 0x0300) >> 8);
  65   1      
  66   1         TI = 1;
  67   1         // Set the baud rate (end)
  68   1      
  69   1         // Set up the buffers for writing
  70   1         Out_written_index_G = 0;
  71   1         Out_waiting_index_G = 0;
  72   1      
  73   1         PC_LINK_O_Write_String_To_Buffer("Serial OK.\n");
  74   1      
  75   1         // Serial interrupt *NOT* enabled
  76   1         ES = 0;
  77   1         }
  78          
  79          /*------------------------------------------------------------------*-
  80            ---- END OF FILE -------------------------------------------------
  81          -*------------------------------------------------------------------*/
  82          
  83          
  84          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     75    ----
   CONSTANT SIZE    =     12    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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