send.lst

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C51 COMPILER V8.02   SEND                                                                  08/21/2008 17:20:12 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE SEND
OBJECT MODULE PLACED IN send.OBJ
COMPILER INVOKED BY: C:\Keil\uv3\C51\BIN\C51.EXE send.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          
   2          /**************先发0xaa,再发0-F笔段码（要发奇偶检验位TB8），然后发和检验字节********************/
   3          #include"reg52.h"
   4          #define uchar unsigned char
   5          uchar seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,
   6              0x83,0xc6,0xa1,0x86,0x8e};   //0-F笔段码
   7          uchar sum;
   8          bit tsucc=1; //开始时假设发送成功
   9          sbit P10=P1^0;
  10          uchar timemath=0;
  11          uchar rdata;
  12          /************初始化T1，波特率4800，不倍增，8位自动重装******************/
  13          void init()
  14          {
  15   1      SCON=0xd0;
  16   1      TL1=0xfa;
  17   1      TH1=0xfa;
  18   1      TMOD=0x2f;
  19   1      ET1=0;//T1禁止中断，只用于计数(IE)
  20   1      TR1=1;
  21   1      //ES=1;
  22   1      //EA=1;
  23   1      }
  24          
  25          /****************0-F和放seg[17],有返回值*******************/
  26          unsigned int add()
  27          {
  28   1      uchar i;
  29   1      int sum=0;
  30   1      for(i=0;i<16;i++)
  31   1      sum+=seg[i];
  32   1      return(sum);
  33   1      }
  34          
  35          /*************把0-F字节分别发过去******************/
  36          
  37          send()
  38          {
  39   1      ACC=seg[timemath];
  40   1      TB8=P;
  41   1      SBUF=ACC;
  42   1      timemath++;
  43   1      if (timemath==16)
  44   1      {timemath=0;
  45   2      //P1=0xf0;
  46   2      ACC=sum;
  47   2      TB8=P;
  48   2      SBUF=ACC; //和部分
  49   2      while(TI==0);//最后一帧要清TI,防止重发，等待回发是否正确
  50   2      TI=0;
  51   2      }
  52   1      }
  53          
  54          /**************接收部分*****************/
  55          void receive()
C51 COMPILER V8.02   SEND                                                                  08/21/2008 17:20:12 PAGE 2   

  56          {
  57   1      ACC=SBUF;
  58   1      rdata=ACC;
  59   1      //P1=ACC;
  60   1      if(P^RB8==0&&rdata==0xa5)
  61   1      //if(P^RB8!=0||rdata==0xa6)
  62   1      {tsucc=0;//发送成功
  63   2      }
  64   1      else 
  65   1      {
  66   2      tsucc=1;//重发
  67   2      ACC=0xa6;
  68   2      TB8=P;
  69   2      SBUF=ACC;
  70   2      while(TI==0);//最后一帧要清TI,防止重发，等待回发是否正确
  71   2      TI=0;
  72   2      //P1=ACC;
  73   2      }
  74   1      }
  75          
  76          /***************主函数******************/
  77          void main()
  78          {
  79   1      P10=1;
  80   1      //uchar k;
  81   1      init();
  82   1      while(1)
  83   1      if(tsucc)
  84   1      {
  85   2      P10=~P10;
  86   2      tsucc=0;
  87   2      sum=add(); 
  88   2      ACC=0xaa;//发帧首标志
  89   2      TB8=P;
  90   2      SBUF=ACC;
  91   2      while(tsucc==0)//等待发送或接收有效     (重发时有用)
  92   2      {if(RI==1||TI==1)
  93   3      {
  94   4      if(TI)
  95   4      {TI=0;
  96   5      send();
  97   5      }
  98   4      if(RI)
  99   4      {RI=0;
 100   5      receive();
 101   5      }}
 102   3      }}}


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    170    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     19    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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