serial.lst

RS232通信C程序,希望对大家有用

C51 COMPILER V7.20   SERIAL                                                                12/02/2004 11:35:22 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE SERIAL
OBJECT MODULE PLACED IN serial.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE serial.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          //------------------------------------------------
   3          char getData(void)
   4          {
   5   1      char c;
   6   1        while (!RI);
   7   1        c=SBUF;
   8   1        RI=0;
   9   1        return (c);
  10   1      }
  11          //-------------------------------------------------
  12          char sendData(char c)
  13            {
  14   1        while (!TI);
  15   1        TI = 0;
  16   1        return (SBUF = c);
  17   1      }
  18          //-------------------------------------------------
  19          void init(void)
  20          {
  21   1        TMOD=0x20;//mode 2 auto reload
  22   1        TL1=0xfd;
  23   1        TH1=0xfd;//baudRate:9600
  24   1      
  25   1        SCON=0x52; //sm0,sm1,sm2,ren,tb,rb8,ti,ri
  26   1        PCON&=0x7f;//smod=0;
  27   1        TR1=1;//timer1 reset
  28   1      }
  29          
  30          main()
  31          {
  32   1        char c;
  33   1        init();
  34   1        while(1)
  35   1        {
  36   2          c=getData();
  37   2          switch (c)
  38   2          {
  39   3            case '1':
  40   3                  sendData('a');
  41   3                  break;
  42   3                case '2':
  43   3                  sendData('b');
  44   3                  break;
  45   3                case '3':
  46   3                  sendData('c');
  47   3                      break;
  48   3                default:
  49   3                  sendData('n');
  50   3                      break;
  51   3          }
  52   2        }
  53   1      }


C51 COMPILER V7.20   SERIAL                                                                12/02/2004 11:35:22 PAGE 2   

MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     74    ----
   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)