uart_t2.lst

Atmel Uart C51程序（timer2方式）

C51 COMPILER V7.10   UART_T2                                                               04/21/2004 11:24:02 PAGE 1   


C51 COMPILER V7.10, COMPILATION OF MODULE UART_T2
OBJECT MODULE PLACED IN uart_t2.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE uart_t2.c BROWSE DEBUG OBJECTEXTEND TABS(3)

line level    source

   1          /**
   2           * @file $RCSfile: uart_t2.c,v $
   3           *
   4           * Copyright (c) 2004 Atmel.
   5           *
   6           * Please read file license.txt for copyright notice.
   7           *
   8           * @brief This file is an example to use uart with timer2.
   9           *
  10           * This file can be parsed by Doxygen for automatic documentation
  11           * generation.
  12           * Put here the functional description of this file within the software
  13           * architecture of your program.
  14           *
  15           * @version $Revision: 1.0 $ $Name:  $
  16           */
  17          
  18          /* @section  I N C L U D E S */
  19          #include "reg_c51.h"
  20          
  21          char uart_data;
  22          
  23          /**
  24           * FUNCTION_PURPOSE: 
  25           * FUNCTION_INPUTS: void
  26           * FUNCTION_OUTPUTS: void
  27           */
  28          void main (void) 
  29          {
  30   1         SCON = 0x50;               /* uart in mode 1 (8 bit), REN=1 */
  31   1         T2CON &= 0xF0;             /* Baud rate generator, timer2 run */
  32   1         T2CON |= 0x30;   
  33   1         PCON |= 0x80; 
  34   1         TH2=0xFF;                  /* init value */
  35   1         TL2=0xFD;                  /* init value */
  36   1         RCAP2H=0xFF;               /* 115200 Bds at 11.059MHz */
  37   1         RCAP2L=0xFD;               /* 115200 Bds at 11.059MHz */
  38   1         ES = 1;                 /* Enable serial interrupt */
  39   1         EA = 1;                     /* Enable global interrupt */
  40   1         TR2 = 1;
  41   1      
  42   1          while(1);                       /* endless */
  43   1      }     
  44          
  45          /**
  46           * FUNCTION_PURPOSE: 
  47           * FUNCTION_INPUTS: void
  48           * FUNCTION_OUTPUTS: void
  49           */
  50          void serial_IT(void) interrupt 4 
  51          {
  52   1      
  53   1         if (RI == 1) 
  54   1         {           /* if reception occur */
  55   2           RI = 0;         /* clear reception flag for next reception */
C51 COMPILER V7.10   UART_T2                                                               04/21/2004 11:24:02 PAGE 2   

  56   2           uart_data = SBUF;  /* Read receive data */
  57   2           SBUF = uart_data;  /* Send back same data on uart*/
  58   2         }
  59   1         else
  60   1         {            /* if emission occur */
  61   2           TI = 0;         /* clear emission flag for next emission*/      
  62   2         }
  63   1      }
  64          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     47    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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