pca_cap.lst

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C51 COMPILER V8.02   PCA_CAP                                                               08/28/2008 22:51:02 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE PCA_CAP
OBJECT MODULE PLACED IN PCA_CAP.OBJ
COMPILER INVOKED BY: C:\Keil\uv3\C51\BIN\C51.EXE PCA_CAP.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "SSTREG51.h"
   2          #define uchar unsigned char
   3          uchar seg[10 ]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
   4          uchar i;
   5          uchar cap[4];
   6          //sfr CCAPM0=0XDA;
   7          //sfr CMOD=0XD9;
   8          //sfr CCAP0H=0XFA;
   9          //sfr CCAP0L=0XEA;
  10          //sfr CCON=0XD8;
  11          //sbit CCAPP0=CCAPM0^2;
  12          //sbit CCAPM0=CCAPM0^3;
  13          //sbit CR=CCON^6;
  14          //sbit CCF0=CCON^0;
  15          //sbit EC=IE^6;
  16          bit capselect=1;
  17          
  18          /*******初始PCA*********/
  19          init_pca()
  20          {
  21   1      CMOD=0;//捕捉模式，fosc/12,
  22   1      CCAPM0=0X98;//下降沿捕捉，      允许模式0中断
  23   1      CR=1;
  24   1      EC=1;
  25   1      EA=1;
  26   1      } 
  27          
  28          /*********中断处理*********/
  29          
  30          void pca_0() interrupt 6
  31          {
  32   1      CCAPM0&=0xf3;//清上升、下降沿捕捉允许/禁止位
  33   1      capselect=~capselect;
  34   1      CCF0=0;// 清中断标志
  35   1      cap[i]=CCAP0L;
  36   1      i++;
  37   1      cap[i]=CCAP0H;//保存捕捉数据
  38   1      i++;
  39   1      }
  40          
  41          /***********主函数**************/
  42          void main()
  43          {
  44   1      unsigned int t1,t2;
  45   1      uchar comt1_t2;
  46   1      init_pca();
  47   1      while(1)
  48   1      {
  49   2      if(capselect==1)        //上升沿捕捉
  50   2      {CCAPM0&=0xdf;// CAPP0=1;
  51   3      CCAPM0|=0x20;
  52   3      }       
  53   2      else                //下降沿捕捉
  54   2      {CCAPM0&=0xef;//CAPN0=1;         
  55   3      CCAPM0|=0x10;
C51 COMPILER V8.02   PCA_CAP                                                               08/28/2008 22:51:02 PAGE 2   

  56   3      }
  57   2      if(i==4)
  58   2      {
  59   3      i=0;
  60   3      EC=0;   // 禁止中断
  61   3      t1=256*cap[1]+cap[0];
  62   3      t2=256*cap[3]+cap[2];
  63   3      comt1_t2=t2/t1;
  64   3      P0=seg[comt1_t2];   //占空比
  65   3      EC=1;  //待送P0显示后再允许中断
  66   3      }
  67   2      } }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    129    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     15       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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