leddrive.lst

麦迪工作室51开发板LED数码管的驱动代码

C51 COMPILER V7.00  LEDDRIVE                                                               11/12/2007 21:51:24 PAGE 1   


C51 COMPILER V7.00, COMPILATION OF MODULE LEDDRIVE
OBJECT MODULE PLACED IN LEDDRIVE.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE LEDDRIVE.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include "ATMEL89X51.H"
   2          #include <intrins.h>
   3          #define LED_SET P2                                      //点亮哪一位数码管选择端口
   4          //#define LED_OE        P3_6                            //使能数据端口输出
   5          #define LED_data P0                                     //设定P0口为数据输入端口
   6          #define ON 0                                            //设0为开
   7          #define OFF 1                                           //设1为关
   8          unsigned play_bit[8] = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; //确定哪一位数码管显示
   9          unsigned char seg[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};  //0~~9段码  //0~~9段码
  10          
  11          void delay(unsigned char temp)
  12          {       
  13   1              unsigned char i;
  14   1          for(i=0;i<temp;i++);
  15   1      }
  16          
  17          void led_disp(unsigned char num,unsigned char vdata,unsigned char on_switch) //显示驱动函数 on_switch = 0 
             -,开，on_switch = 1，关
  18          {
  19   1              LED_SET =  ~play_bit[num-1];            //选定哪一位数码管显示
  20   1              if(on_switch)
  21   1                      LED_data = 0;
  22   1              else
  23   1                      LED_data = vdata;                       //送字形码
  24   1                      delay(200);                                     //消影
  25   1                      LED_data =0x0;
  26   1              
  27   1      }
  28          
  29          
  30          void led_play(long cont)                //十进制数显示驱动函数
  31          {
  32   1                      int i;
  33   1                      for(i=0;i<8;i++)
  34   1                      {       
  35   2                              switch(i)
  36   2                              {
  37   3                                      case 0: led_disp(1,seg[cont%10],0);
  38   3                                              break;
  39   3                                      case 1: led_disp(2,seg[(cont/10)%10],0);
  40   3                                              break;
  41   3                                      case 2: led_disp(3,seg[(cont/100)%10],0);
  42   3                                              break;
  43   3                                      case 3: led_disp(4,seg[(cont/1000)%10],0);
  44   3                                              break;
  45   3                                      case 4: led_disp(5,seg[(cont/10000)%10],0);
  46   3                                              break;
  47   3                                      case 5: led_disp(6,seg[(cont/100000)%10],0);
  48   3                                              break;
  49   3                                      default:
  50   3                                              break;
  51   3                              }
  52   2                      }
  53   1      }
  54          
C51 COMPILER V7.00  LEDDRIVE                                                               11/12/2007 21:51:24 PAGE 2   

  55          
  56          main()
  57          {
  58   1      
  59   1      //      LED_OE = ON;
  60   1              while(1)
  61   1              {               
  62   2              led_play(123456);
  63   2              }
  64   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    356    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     26       6
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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