max232.lst

2232接收 232接收 232接收

C51 COMPILER V7.50   MAX232                                                                07/31/2007 15:57:45 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE MAX232
OBJECT MODULE PLACED IN MAX232.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE MAX232.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          #define uchar unsigned char
   3          #define uint unsigned int
   4          #define TR 0
   5          uchar idata buf[10]={0x20,1,2,3,4,5,6,7,8,9};
   6          uchar pf;
   7          
   8          
   9          void init(void)
  10          {TMOD=0x20;               //mode 1,counter 1
  11   1       TH1=0xFD;                //set baud rate
  12   1       TL1=0xFD;
  13   1       PCON=0x00;
  14   1       TR1=1;                   //start T/C1
  15   1       SCON=0x50;               //mode1
  16   1      }
  17          
  18          
  19          void send(uchar idata *d)
  20          {uint i;
  21   1       uchar j,v;
  22   1       P1=0Xfb;
  23   1       do{RI=0;
  24   2         SBUF=0xaa;           //send handshaking message
  25   2          while (TI==0);       //sending
  26   2        TI=0;                //software clear
  27   2         while(RI==0);        //waiting for ACK
  28   2        RI=0;
  29   2        v=SBUF;                //software clear
  30   2       }while (v!=0xbb);//B is not ready
  31   1         do{
  32   2           pf=0;                 //clear the sum
  33   2           for(i=0;i<10;i++){
  34   3             j=*(d+i);
  35   3                 SBUF=j ;         //send the data
  36   3             pf+=*(d+i);           //sum
  37   3             while(TI==0);TI=0;  
  38   3             }
  39   2           SBUF=pf;               //send sum
  40   2          while(TI==0);TI=0;
  41   2        while(RI==0);RI=0;     //waiting for B to ack
  42   2           }while (SBUF!=0);     //if there is wrong, send again
  43   1      }
  44          
  45          void receive(uchar idata *d)
  46          {uchar i;
  47   1       do{
  48   2          while(RI==0);RI=0;      
  49   2         } while((SBUF^0xaa)!=0); //check if A is sending
  50   1         SBUF=0xbb;               //send ACK
  51   1         while(TI==0);TI=0;
  52   1         while(1){
  53   2          pf=0;
  54   2          for(i=0;i<16;i++){
  55   3          while(RI==0);RI=0;
C51 COMPILER V7.50   MAX232                                                                07/31/2007 15:57:45 PAGE 2   

  56   3          d[i]=SBUF;              //receive data
  57   3          pf+=d[i];               //sum
  58   3          }
  59   2          while (RI==0);RI=0;     //receive sum
  60   2          if((SBUF^pf)==0){       //check sum
  61   3           SBUF=0x00;break;}      //if the two are equal, then send 00
  62   2          else{
  63   3            SBUF=0xff;            //send FF,receive again
  64   3            while(TI==0);TI=0;
  65   3         }
  66   2        }
  67   1      
  68   1       }
  69          
  70          void main(void){
  71   1       init();
  72   1       if(TR==0){
  73   2          send(buf);
  74   2      }
  75   1      //else{
  76   1       //receive(buf);
  77   1      //}
  78   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    164    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1    ----
   IDATA SIZE       =     10    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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