延时1s闪烁led.lst

间隔1S发光管循环闪烁

C51 COMPILER V6.12  ____1S____LED                                                          03/21/2009 22:00:22 PAGE 1   


C51 COMPILER V6.12, COMPILATION OF MODULE ____1S____LED
OBJECT MODULE PLACED IN .\延时1S闪烁LED.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE .\延时1S闪烁LED.c DEBUG OBJECTEXTEND

stmt level    source

   1          #include<reg52.h>
   2          #include <intrins.h>
   3          #define uint unsigned int 
   4          #define uchar unsigned char 
   5          void del(uint);
   6          void main()
   7          {	
   8   1      	uint sum=0xfe;
   9   1      	while(1)
  10   1      	{
  11   2      		P1=sum;
  12   2      		del(10);//延时1S，注意del中的y初值，这种无法精确定时，要精确定时可用定时器
  13   2      		P1=0xff;
  14   2      		del(10);
  15   2      		P1=sum;
  16   2      		del(10);
  17   2      		P1=0xff;
  18   2      		sum=_crol_(sum,2);
  19   2      		del(10);	
  20   2      	}
  21   1      	
  22   1      }
  23          
  24          void del(uint z)
  25          {
  26   1      	uint x,y;
  27   1      	for(x=z;x>0;x--)
  28   1      		for(y=12500;y>0;y--);
  29   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     79    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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