main.lst

8279的驱动测试程序 用于控制4*4键盘 比较简单,适合初学者使用

C51 COMPILER V8.02   MAIN                                                                  08/27/2007 12:25:45 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: D:\Program Files\keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*******************************************************************
   2          **   inter 8279键盘测试程序
   3          **    
   4          **  2007-8-27
   5          **   qiao
   6          **************************************************************************/
   7          
   8          
   9          #include  <AT89X55.H>
  10          #include  <absacc.h>
  11          #include  <string.h>
  12          
  13          #include "keyboard.h"
  14          
  15          main()
  16          {
  17   1              EA = 1;          //开中断
  18   1              SCON = 0x50;
  19   1              PCON = 0x80;     //设置TMOD为1
  20   1              TMOD = 0x21;   //设置定时器1产生4800 baud  设置定时器1 为1方式
  21   1      
  22   1            
  23   1              TL1 = TH1 = 256-13;   //定时13us  产生4800的波特率      波特率计算公式// TH1 = TL1 = 256- T1 = 1M/((32/(T
             -MOD<<1))*baud)
  24   1              TR1 = 1;
  25   1      
  26   1      
  27   1                               
  28   1              printhex(0x12); 
  29   1              print("start run\r\n");
  30   1              Init8279();
  31   1              print("end run\r\n");
  32   1              while(1)
  33   1              {
  34   2      
  35   2              ;
  36   2              }
  37   1      
  38   1      
  39   1      
  40   1      
  41   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     53    ----
   CONSTANT SIZE    =     22    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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