rs232.lst

应用案例

C51 COMPILER V7.07   RS232                                                                 06/13/2008 13:33:19 PAGE 1   


C51 COMPILER V7.07, COMPILATION OF MODULE RS232
OBJECT MODULE PLACED IN rs232.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE rs232.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include<reg52.h>
   2          
   3          void rs232_init(void)                   //定时器0的初始化也在这里。
   4          {
   5   1              PCON = 0x00;             //SMOD = 0
   6   1              TMOD = 0x21;             //T1 工作方式2
   7   1              SCON = 0x50;             //工作方式1，禁止接收，（如果0x50，则可以接收）
   8   1              TH1      = 0xfd;                 //波特率 9600 
   9   1              TL1      = 0xfd;
  10   1              TR1  = 1;               PS = 1; PT0 = 0;
  11   1              ES       = 1;           ET0 = 1;
  12   1              EA   = 1;
  13   1      }
  14                  
  15          unsigned char sendflag = 0;
  16          void rs232_send(unsigned char *address, unsigned char length)
  17          {
  18   1              unsigned char cnt;
  19   1              
  20   1              for (cnt=0;cnt<length;cnt++)
  21   1                      {
  22   2                       SBUF =  *(address+cnt);
  23   2                       while (sendflag != 1);
  24   2                       sendflag = 0;           
  25   2                      }
  26   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     69    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       3
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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