com.lst

可以实现多路数据采集和传输系统

C51 COMPILER V7.20   COM                                                                   08/14/2007 15:13:16 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE COM
OBJECT MODULE PLACED IN com.OBJ
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE com.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg51.h>
   2          #include <max485.h>
   3          #define uchar unsigned char
   4          void com_init(void){
   5   1       SCON=0x50;    //9600B
   6   1       TMOD=0x20;
   7   1       TH1=0xfd;
   8   1       TR1=1;
   9   1       ET1=0;
  10   1       ES=1;
  11   1       EA=1;
  12   1       RE=0;
  13   1       }
  14          void senddata(){ 
  15   1      Tpointer = 0x00;     //清发送缓冲区
  16   1      while(Tpointer<TCOUNT){
  17   2       Tbuffer[Tpointer]='A';//发送缓冲区初始化
  18   2       Tpointer++;
  19   2       }
  20   1       Tpointer=-1;
  21   1       SBUF='B';//地址信息放入SBUF
  22   1       while(Tpointer<TCOUNT);
  23   1      }
  24          com(){
  25   1      com_init();
  26   1      while(1){
  27   2      if(r_flag == 1){
  28   3      senddata();
  29   3        }
  30   2       }
  31   1      }
  32          void send(void) interrupt 4 using 3{
  33   1      uchar rec_buff;
  34   1      if(RI){
  35   2      RI=0;
  36   2           r_flag = 0;
  37   2           rec_buff=SBUF;
  38   2               if (rec_buff == 'T'){
  39   3           RE=1;
  40   3           r_flag = 1;
  41   3            }
  42   2        }
  43   1      if(TI){       //请发送中断标志 
  44   2      TI=0;
  45   2        Tpointer++;
  46   2        if(Tpointer>=TCOUNT)RE=0;//数据全部发送完毕返回
  47   2        else{
  48   3          SBUF = Tbuffer[Tpointer]; //数据桢放入SBUF*/
  49   3              
  50   3         }
  51   2       }
  52   1      }
  53          


C51 COMPILER V7.20   COM                                                                   08/14/2007 15:13:16 PAGE 2   

MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    144    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     15    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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