7219.lst

用keil51开发的7219程序实现led显示

C51 COMPILER V7.06   7219                                                                  04/26/2008 16:18:03 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE 7219
OBJECT MODULE PLACED IN 7219.OBJ
COMPILER INVOKED BY: D:\Program Files\keil\C51\BIN\C51.EXE 7219.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include<reg52.h>
   2          
   3          sbit din = P1^0;
   4          sbit load = P1^1;
   5          sbit clk = P1^2;
   6          
   7          typedef unsigned int uint;
   8          void write(uint dat)   //先写高位,高四位没用，;;;;
   9          {
  10   1              int i;
  11   1              load = 0;
  12   1              clk = 0;
  13   1              for(i = 0; i < 4; i ++)
  14   1              {
  15   2                      din = 1;
  16   2                      clk = 1;
  17   2                      clk = 0;
  18   2              }
  19   1              for(i = 0x0800; i > 0; i >>= 1)
  20   1              {
  21   2                      if(dat & i)
  22   2                              din = 1;
  23   2                      else
  24   2                              din = 0;
  25   2                      clk = 1;
  26   2                      clk = 0;
  27   2              }
  28   1              load = 1;
  29   1      }
  30          
  31          void main()
  32          {
  33   1              write( 0x0C01 ); /* 置LED为正常状态 */ 
  34   1          write( 0x0B02 ); //置LED扫描范围DIGIT0-2w
  35   1              write( 0x0A08 ); /* 置LED亮度*/
  36   1              write( 0x09ff ); //全译码;
  37   1              write( 0x0102); //第一位是2;;;
  38   1              write( 0x0203);
  39   1              write( 0x0304);
  40   1              while(1);
  41   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    125    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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