chuankouceshi.lst

C语言写的8051单片机串口调试程序

C51 COMPILER V8.02   CHUANKOUCESHI                                                         05/22/2009 17:29:13 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE CHUANKOUCESHI
OBJECT MODULE PLACED IN chuankouceshi.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE chuankouceshi.c DEBUG OBJECTEXTEND

line level    source

   1          //#pragma src
   2          /*******
   3          串口测试,如果在串口写入4,则发送数据1;如果串口写入其他,发送数据0
   4          *******/
   5          
   6          #include<reg52.h>
   7          #define uchar unsigned char
   8          uchar i;
   9          bit flag_data=0;      //一次接收后发送一次的标志,不然主程序里会不停的发送
  10          bit flag_send=0;      //允许发送
  11          
  12          void usart(void) interrupt 4
  13          {
  14   1       if(RI)
  15   1       {
  16   2        RI=0;
  17   2        i=SBUF;                    //令SBUF=0x04,此步后i没有被SBUF赋值
  18   2        flag_send=1;
  19   2        if(i==4)flag_data=1;
  20   2        else flag_data=0;
  21   2       }
  22   1      }
  23          
  24          void usart_init()          //初始化
  25          {
  26   1       TMOD=0x20;
  27   1       TH1=0xfd;
  28   1       TL1=TH1;                  //11.0592Mhz下9600波特率
  29   1       PCON=0x00;
  30   1       SCON=0x50; 
  31   1       TR1=1;
  32   1       ET1=0;
  33   1       ES=1;
  34   1       RI=0;
  35   1       TI=0;
  36   1       EA=1;                    //开中断
  37   1      }
  38          
  39          void main()
  40          {
  41   1       usart_init();
  42   1      
  43   1       while(1)
  44   1       {
  45   2        if(flag_send)                 
  46   2        {
  47   3         if(flag_data)SBUF=1;      //这里可以发送任何数据,比如测试温度、红外、电压等等数据
  48   3         else SBUF=0;              //这里可以发送任何数据,比如测试温度、红外、电压等等数据,或者不发送
  49   3         while(!TI);                //这里原来有";"           
  50   3         TI=0;
  51   3         flag_send=0;                 
  52   3        }
  53   2       }
  54   1      
  55   1      }
C51 COMPILER V8.02   CHUANKOUCESHI                                                         05/22/2009 17:29:13 PAGE 2   

  56          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     84    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      2    ----
END OF MODULE INFORMATION.


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