uart.lst

51编写的AD7714的测试程序

C51 COMPILER V7.20   UART                                                                  07/18/2007 21:13:43 PAGE 1   


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

line level    source

   1          #include <reg51.h>
   2          sbit BT_SND =P2^0;
   3          sbit BT_REC =P2^1;
   4          /**********************************************
   5          
   6          IO 口模拟232通讯程序
   7          
   8          使用两种方式的C程序 占用定时器0
   9          
  10          **********************************************/
  11          
  12          #define MODE_QUICK
  13          
  14          #define F_TM F0
  15          
  16          #define TIMER0_ENABLE  TL0=TH0; TR0=1;
  17          #define TIMER0_DISABLE TR0=0;
  18          
  19          sbit ACC0=   ACC^0;
  20          sbit ACC1=   ACC^1;
  21          sbit ACC2=   ACC^2;
  22          sbit ACC3=   ACC^3;
  23          sbit ACC4=   ACC^4;
  24          sbit ACC5=   ACC^5;
  25          sbit ACC6=   ACC^6;
  26          sbit ACC7=   ACC^7;
  27          
  28          void IntTimer0() interrupt 1
  29          {
  30   1      F_TM=1;
  31   1      }
  32          //发送一个字符
  33          void PSendChar(unsigned char inch)
  34          {
  35   1      #ifdef MODE_QUICK
  36   1      ACC=inch;
  37   1      
  38   1      F_TM=0;
  39   1      BT_SND=0; //start bit
  40   1      TIMER0_ENABLE; //启动
  41   1      while(!F_TM);
  42   1      
  43   1      BT_SND=ACC0; //先送出低位
  44   1      F_TM=0;
  45   1      while(!F_TM);
  46   1      
  47   1      BT_SND=ACC1;
  48   1      F_TM=0;
  49   1      while(!F_TM);
  50   1      
  51   1      BT_SND=ACC2;
  52   1      F_TM=0;
  53   1      while(!F_TM);
  54   1      
  55   1      BT_SND=ACC3;
C51 COMPILER V7.20   UART                                                                  07/18/2007 21:13:43 PAGE 2   

  56   1      F_TM=0;
  57   1      while(!F_TM);
  58   1      
  59   1      BT_SND=ACC4;
  60   1      F_TM=0;
  61   1      while(!F_TM);
  62   1      
  63   1      BT_SND=ACC5;
  64   1      F_TM=0;
  65   1      while(!F_TM);
  66   1      
  67   1      BT_SND=ACC6;
  68   1      F_TM=0;
  69   1      while(!F_TM);
  70   1      
  71   1      BT_SND=ACC7;
  72   1      F_TM=0;
  73   1      while(!F_TM);
  74   1      
  75   1      BT_SND=1;
  76   1      F_TM=0;
  77   1      while(!F_TM);
  78   1      
  79   1      
  80   1      TIMER0_DISABLE; //停止timer
  81   1      #else
              unsigned char ii;
              
              ii=0;
              
              F_TM=0;
              BT_SND=0; //start bit
              TIMER0_ENABLE; //启动
              while(!F_TM);
              
              while(ii<8)
              {
              if(inch&1)
              {
              BT_SND=1;
              }
              else
              {
              BT_SND=0;
              }
              F_TM=0;
              while(!F_TM);
              ii++;
              inch>>=1;
              }
              BT_SND=1;
              F_TM=0;
              while(!F_TM);
              
              #endif
 111   1      TIMER0_DISABLE; //停止timer
 112   1      }
 113          //接收一个字符
 114          unsigned char PGetChar()
 115          {
 116   1      #ifdef MODE_QUICK
 117   1      
C51 COMPILER V7.20   UART                                                                  07/18/2007 21:13:43 PAGE 3   

 118   1      TIMER0_ENABLE;
 119   1      F_TM=0;
 120   1      while(!F_TM); //等过起始位
 121   1      ACC0=BT_REC;
 122   1      
 123   1      TL0=TH0;
 124   1      
 125   1      F_TM=0;
 126   1      while(!F_TM);
 127   1      ACC1=BT_REC;
 128   1      
 129   1      F_TM=0;
 130   1      while(!F_TM);
 131   1      ACC2=BT_REC;
 132   1      
 133   1      F_TM=0;
 134   1      while(!F_TM);
 135   1      ACC3=BT_REC;
 136   1      
 137   1      F_TM=0;
 138   1      while(!F_TM);
 139   1      ACC4=BT_REC;
 140   1      
 141   1      F_TM=0;
 142   1      while(!F_TM);
 143   1      ACC5=BT_REC;
 144   1      
 145   1      F_TM=0;
 146   1      while(!F_TM);
 147   1      ACC6=BT_REC;
 148   1      
 149   1      F_TM=0;
 150   1      while(!F_TM);
 151   1      ACC7=BT_REC;
 152   1      
 153   1      F_TM=0;
 154   1      
 155   1      while(!F_TM)
 156   1      {
 157   2      if(BT_REC)
 158   2      {
 159   3      break;
 160   3      }
 161   2      }
 162   1      TIMER0_DISABLE; //停止timer
 163   1      return ACC;
 164   1      #else
              unsigned char rch,ii;
              TIMER0_ENABLE;
              F_TM=0;
              ii=0;
              rch=0;
              while(!F_TM); //等过起始位
              
              while(ii<8)
              {
              rch>>=1;
              if(BT_REC)
              {
              rch|=0x80;
              }
              ii++;
C51 COMPILER V7.20   UART                                                                  07/18/2007 21:13:43 PAGE 4   

              F_TM=0;
              while(!F_TM);
              
              }
              F_TM=0;
              while(!F_TM)
              {
              if(BT_REC)
              {
              break;
              }
              
              }
              TIMER0_DISABLE; //停止timer
              return rch;
              
              #endif
 197   1      
 198   1      }
 199          //检查是不是有起始位
 200          bit StartBitOn()
 201          {
 202   1      return  (BT_REC==0);
 203   1      
 204   1      }
 205          /*
 206          void main()
 207          {
 208          unsigned char gch;
 209          
 210          TMOD=0x22; //定时器1为工作模式2(8位自动重装)，0为模式2(8位远