cj2.lst

485通信仿真源码.rar

C51 COMPILER V8.01   CJ2                                                                   03/21/2010 22:58:42 PAGE 1   


C51 COMPILER V8.01, COMPILATION OF MODULE CJ2
OBJECT MODULE PLACED IN cj2.OBJ
COMPILER INVOKED BY: D:\学习软件\keil\C51\BIN\C51.EXE cj2.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          #include "18B20_1.h"
   3          #define uchar unsigned char
   4          
   5          
   6          sbit RE=P3^4;                   //      487控制位
   7          uchar code display_table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40,0x77,0x7c};
   8          uchar t=0,ti=0;temperature[4]={12,0,0,0};
   9          
  10          
  11          void display();                 //      显示函数
  12          void delay(uchar a);    //      延时函数
  13          
  14          
  15          void main()
  16          {
  17   1              int temp;
  18   1      
  19   1              TMOD=0x21;              //定时计数器1设置为模式2
  20   1              TL1=0XFD;
  21   1              TH1=0XFD;
  22   1              TH0=(65536-50000*110592/120000)/256;    //设置50ms溢出一次
  23   1              TL0=(65536-50000*110592/120000)%256;
  24   1              PCON=0X00;
  25   1              SCON=0xf0;              //工作在方式3，允许通信,SM2=1只有RB8为1时才接受数据，否则不要
  26   1              TR1=1;
  27   1              TR0=1;
  28   1              ET0=1;
  29   1              RE=0;                   //设置457为接受状态
  30   1              EA=1;
  31   1              ES=1;
  32   1      
  33   1              while(1)
  34   1              {
  35   2                      display();
  36   2      
  37   2                      if(ti==20)
  38   2                      {
  39   3                              ti=0;
  40   3                              temp=b20_temperate();
  41   3                              temperature[1]=temp%1000/100;           //      百位温度
  42   3                              temperature[2]=temp%100/10;                     //      十位温度
  43   3                              temperature[3]=temp%10;                         //      个位温度
  44   3                      }       
  45   2                      
  46   2              }
  47   1              
  48   1      }
  49          
  50          
  51          void delay(uchar a)
  52          {
  53   1              uchar i;
  54   1              for(;a>0;a--)
  55   1                      for(i=100;i>0;i--);
C51 COMPILER V8.01   CJ2                                                                   03/21/2010 22:58:42 PAGE 2   

  56   1      
  57   1      }
  58          
  59          
  60          void display()
  61          {
  62   1      
  63   1              P2=0XFF;                           //  显示从机的代号
  64   1              P0=display_table[temperature[0]];
  65   1              P2=0xfe;
  66   1              delay(1);
  67   1      
  68   1              P2=0XFF;                           //  显示温度
  69   1              P0=display_table[temperature[1]];
  70   1              P2=0xfd;
  71   1              delay(1);
  72   1      
  73   1              P2=0XFF;
  74   1              P0=display_table[temperature[2]];
  75   1              P2=0xfb;
  76   1              delay(1);
  77   1      
  78   1              P2=0XFF;
  79   1              P0=display_table[temperature[3]]+0x80;
  80   1              P2=0xf7;
  81   1              delay(1);
  82   1      
  83   1      }
  84          
  85          
  86          void time() interrupt 1                 //      定时器中断函数
  87          {
  88   1              TH0=(65536-50000*110592/120000)/256;
  89   1              TL0=(65536-50000*110592/120000)%256;
  90   1      
  91   1              ti++;
  92   1      }
  93          
  94          
  95          void r_scon() interrupt 4          //串口中断
  96          {
  97   1              uchar i;
  98   1      
  99   1              if(RI==1)
 100   1              {
 101   2                      RI=0;
 102   2                      delay(10);
 103   2                      
 104   2                      if(SBUF==2)                     //判断地址是否是本机，地址为2
 105   2                      {
 106   3                              t=1;
 107   3                              ES=0;                   //关串口中断
 108   3                              SM2=0;
 109   3      
 110   3                              RE=1;            //准备发送数据
 111   3                              delay(10);
 112   3      
 113   3                              SBUF=2;         //      校验本机地址
 114   3                              while(TI!=1);
 115   3                              TI=0;
 116   3                              delay(10);
 117   3      
C51 COMPILER V8.01   CJ2                                                                   03/21/2010 22:58:42 PAGE 3   

 118   3                              for(i=0;i<4;i++)        // 发送数据
 119   3                              {
 120   4                                      SBUF=temperature[i];
 121   4                                      while(TI!=1);
 122   4                                      TI=0;
 123   4                                      delay(10);
 124   4                              }
 125   3      
 126   3                              RE=0;
 127   3                              ES=1;
 128   3                              SM2=1;
 129   3                      
 130   3                      }       
 131   2              }       
 132   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    513    ----
   CONSTANT SIZE    =     13    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     10       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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