main.lst

51单片机的数码管动态扫描源代码。包括Keil工程

C51 COMPILER V7.08   MAIN                                                                  10/14/2008 21:38:40 PAGE 1   


C51 COMPILER V7.08, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg52.h>
   2          
   3          #define T0_INTERRUPT 1  //T0中断向量号
   4          //共阳极数码管7段码
   5          unsigned char seg[] = {0x3F,0x06}; //简化只显示0和1
   6          
   7          unsigned char SegScan[] = {0xFE,0xFD,0xFB,0xF7,0xEF,0xDF};//6个数码管控制
   8          
   9          void Init_T0()
  10          {
  11   1              TMOD &= 0xF0;
  12   1              TMOD |= 0x01;  //16位定时器模式
  13   1              
  14   1              TH0 = 0xFC;
  15   1              TL0 = 0x18;
  16   1              
  17   1              EA = 1;       //开全局中断
  18   1              ET0 = 1;          //允许T0中断
  19   1              TR0 = 1;          //启动定时器
  20   1      }
  21          
  22          void Display()  //扫描显示
  23          {       
  24   1              static unsigned char i = 0;
  25   1              P2 = SegScan[i];
  26   1              P1 = 0xFF - seg[i%2]; //转换成共阴极数码管,seg[i%2]可以在其他函数进行更新
  27   1              i++;
  28   1              if(i>5) i = 0;
  29   1      }
  30          
  31          void main(void)
  32          {
  33   1              Init_T0();
  34   1              while(1)
  35   1              {
  36   2                      PCON |= 0x01;
  37   2              }
  38   1      }
  39          
  40          void T0_Interrupt() interrupt T0_INTERRUPT
  41          {
  42   1              static unsigned char i = 0;
  43   1              TH0 = 0xFC;
  44   1              TL0 = 0x18;
  45   1              i++;
  46   1              TF0 = 0;
  47   1              if(i == 3)  //3毫秒扫描一次
  48   1              {
  49   2                      Display();
  50   2                      i = 0;
  51   2              }
  52   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
C51 COMPILER V7.08   MAIN                                                                  10/14/2008 21:38:40 PAGE 2   

   CODE SIZE        =    104    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     10    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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