跑马灯.lst

单片机开发资料光盘-双龙-686M.zip

C51 COMPILER V6.02  _躝淼_                                                                 06/25/2001 15:43:18 PAGE 1   


C51 COMPILER V6.02, COMPILATION OF MODULE _躝淼_
OBJECT MODULE PLACED IN .\跑马灯.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE .\跑马灯.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*-------------------------------------------*/
   2          	/*P0~P3一个灯循环亮且由慢变快*/
   3          	#include<stdio.h>
   4          	#include<reg51.h>
   5          	unsigned int tc;     		/*延时变量tc*/
   6          void main()
   7                          {
   8   1      	 void delay(int t);	/*定义延时函数delay(int t)或delay(t)但delay()是错的因此函数是有参数的。*/
   9   1      	 void light();         	    /*void函数应无类型int. float等 说明,定义亮灯函数 light(),其是无参数的。*/
  10   1      	 while(1)			/*大循环*/
  11   1      	 {
  12   2       	 tc=5000;
  13   2      	  while(tc>500)		/*tc由5000开始到500循环*/
  14   2      	  {
  15   3       	  light();
  16   3       	  tc=tc-1500;
  17   3       	 }
  18   2       	 while(tc>=100)  	 /*tc由500开始到小于100循环*/
  19   2       	 {light();
  20   3      	  tc=tc-80;}
  21   2      	 }
  22   1      	} 	       		/*継续大循环*/
  23          
  24          
  25          void light()		/*亮灯子函数 light()其无直接参数*/
  26          	 {
  27   1       	 unsigned int c;
  28   1       	 int i;
  29   1       	 c=0x0fe;			/*P0口亮*/
  30   1       	 for(i=1;i<=9;i++)
  31   1       	  {P0=c;
  32   2        	   delay(tc);
  33   2         	   c=c<<1|1;	               /*等价c=c<<1;c=c+0x01*/
  34   2                } 		/*注:若用P0=P0<<1|1;因读P0再右移再加1,当P0某个脚外电路拉底就不对了*/
  35   1      	c=0x7f;
  36   1      	  for(i=1;i<=9;i++)
  37   1      	   {P2=c;
  38   2      	    delay(tc);
  39   2      	    c=c>>1|0X80;
  40   2      	   } 
  41   1      	c=0x7f;
  42   1      	  for(i=1;i<=9;i++)
  43   1      	   {P3=c;
  44   2      	    delay(tc);
  45   2      	    c=c>>1|0X80;
  46   2      	   } 
  47   1      	c=0x7f;
  48   1      	  for(i=1;i<=9;i++)
  49   1      	   {P1=c;
  50   2      	    delay(tc);
  51   2      	    c=c>>1|0X80;
  52   2      	   }
  53   1      	}
  54          
  55          
C51 COMPILER V6.02  _躝淼_                                                                 06/25/2001 15:43:18 PAGE 2   

  56          void delay(int t)	/*延时函数delay(int t)*/
  57          	{int i;
  58   1      	 for(i=1;i<=t;i++)
  59   1      	  {
  60   2      	   }
  61   1      	}


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    295    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      2       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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