example1.lst

以atmel AT89C51为核心的超小型PLC源代码

C51 COMPILER V7.06   EXAMPLE1                                                              02/05/2004 21:39:53 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE EXAMPLE1
OBJECT MODULE PLACED IN Example1.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE Example1.c LARGE BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*
   2          *********************************************************************************************************
   3          *                            EXAMPLE1
   4          
   5          *                                  Using the Keil uVision2 compiler
   6          * File : EXAMPLE1.C
   7          *********************************************************************************************************
   8          */
   9          #include "uPLC.h"
  10          #include "EXAMPLE1.h"
  11          #include "REG52.h" //应与所用的CPU相配
  12          #include "Program.h"
  13          
  14          //////////////////////////////////////////////////////////////////////////////////
  15          #define OSC_FREQ                        (12000000UL)
  16          #define OSC_PER_INST            (12)
  17          
  18          //Preload value for 20 ms delay
  19          #define PERIOD          (20)    //100 msec      
  20          #define PRELOAD020      (65536 - (unsigned int)(OSC_FREQ * PERIOD / (OSC_PER_INST * 1000)))
  21          #define PRELOAD020H     (PRELOAD020 / 256)
  22          #define PRELOAD020L     (PRELOAD020 % 256)
  23          
  24          #define INTR_TIMER_0            1
  25          
  26          unsigned int xdata counter;
  27          
  28          ///////////////////////////////////////////////////////////////////////////////
  29          void Timer0ISR(void) interrupt INTR_TIMER_0
  30          {
  31   1              //Reload timer0 value 
  32   1              TL0     = PRELOAD020L;
  33   1              TH0 = PRELOAD020H;
  34   1              if(counter%5==0) ReflashTIM();
  35   1              counter++;
  36   1      }
  37          ///////////////////////////////////////////////////////////////////////////////
  38          void main (void)
  39          {
  40   1      #if CODE_DEBUGGING
                  SCON  = 0x50;                       /* SCON: mode 1, 8-bit UART, enable rcvr      */
                  TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
                  TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
                  TR1   = 1;                  /* TR1:  timer 1 run                          */
                  TI    = 1;                  /* TI:   set TI to send first char of UART    */
              #endif
  47   1              Init();
  48   1      
  49   1      #if CODE_DEBUGGING
                      CheckLadder(Program);
              #endif
  52   1              while (1)
  53   1                {
  54   2                      ExecuteLadder(Program);
  55   2                      MappingIO();
C51 COMPILER V7.06   EXAMPLE1                                                              02/05/2004 21:39:53 PAGE 2   

  56   2                }
  57   1      }
  58          ////////////////////////////////////////////////////////////////////////////////////////////////////
  59          void Init(void)
  60          {
  61   1              P0=P1=P2=P3=0xff;
  62   1      
  63   1              TMOD &= 0xf0;   // clear all T0 bits
  64   1              TMOD |= 0x01;   // set T0 as 16-bit timer
  65   1              
  66   1              //Set timer0 value as (65536 - 20 * 1000) equivalent to 20 ms
  67   1              TL0     = PRELOAD020L;
  68   1              TH0 = PRELOAD020H;
  69   1      
  70   1              ET0 = 1;        // enable timer 0 interrupt
  71   1              TR0 = 1;        // start timer 0
  72   1              EA = 1;         // enable interrupt
  73   1      //      AUXR=0;         //选择片内XRAM
  74   1              uPLCInit();
  75   1              counter=0;
  76   1      }
  77          ////////////////////////////////////////////////////////////////////////////////
  78          void MappingIO(void)
  79          {
  80   1              unsigned char In;
  81   1              unsigned int xdata mt;
  82   1              int *pIR;
  83   1              pIR=GetIR();
  84   1              mt=0;
  85   1              In=~P3;
  86   1              mt|=In;
  87   1              *pIR=mt;
  88   1              mt=*(pIR+9);
  89   1              P1=~mt; 
  90   1      }
  91          //////////////////////////////////////////////////////////////////////////////////
  92          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    207    ----
   CONSTANT SIZE    =    504    ----
   XDATA SIZE       =      2       2
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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