proj_4.lst

一位数码管计数器--74HC164编程学习 用74HC164驱动LED 此程序可以联系对74HC164的应用

C51 COMPILER V7.10   PROJ_4                                                                03/02/2008 08:45:47 PAGE 1   


C51 COMPILER V7.10, COMPILATION OF MODULE PROJ_4
OBJECT MODULE PLACED IN proj_4.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE proj_4.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1           
   2          //ZC-51学习板实验源程序
   3          //实验四 一位数码管计数器
   4          //实验目的: 学习74HC164编程
   5          //实验现象: 一位数码管计数显示
   6          //http://www.ednchina.com/blog/zhichengdz/
   7          //E-mail: [e-mail]
   8          
   9          #include <reg52.h>                      //包括一个标准的51头函数
  10          
  11          #define uchar unsigned char                      //预定义
  12          #define uint  unsigned int                       //预定义
  13          #define ulong unsigned long                      //预定义
  14          
  15          sbit SDA_164=P1^0;                //74HC164端口定义
  16          sbit SCLK_164=P1^1;
  17          sbit DIG1=P1^2;                   //数码管位选端口
  18          sbit DIG2=P1^3;                   //数码管位选端口
  19          sbit DIG3=P1^4;                   //数码管位选端口
  20          sbit DIG4=P1^5;                   //数码管位选端口
  21          
  22          uchar code LedNumber[14]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x80,0x00,0x04,0x5c};
  23          
  24          void delay(int i,int j)                   //延时函数
  25          {
  26   1              int m;
  27   1              for(;i>0;i--)
  28   1              {
  29   2                      m=j;
  30   2                      for(;m>0;m--);
  31   2              }
  32   1      }
  33          
  34          void wirteByte_74164 (uchar ch)         //往74164中写一个字节
  35          {       
  36   1              uchar i;
  37   1              SCLK_164 = 0;
  38   1              for (i=0;i<8;i++)
  39   1              {
  40   2                      SDA_164 = ch&0x80;
  41   2                      SCLK_164 = 1;
  42   2                      ch = ch<<1;
  43   2                      SCLK_164 = 0;
  44   2              }
  45   1      }
  46          
  47          
  48          void led_display (uchar ch)                       //一位数码管显示函数
  49          {
  50   1              wirteByte_74164 (LedNumber[ch]);
  51   1              DIG4 = 0;
  52   1              delay(300,200);
  53   1              DIG4 = 1;
  54   1      }
  55          
C51 COMPILER V7.10   PROJ_4                                                                03/02/2008 08:45:47 PAGE 2   

  56          void main ()                                    //主函数
  57          {
  58   1              uchar ch;
  59   1              while (1)                               //死循环
  60   1              {
  61   2                      led_display (ch);        //显示数字
  62   2                      ch++;                            //计数
  63   2                      if (ch>9)
  64   2                      {
  65   3                              ch=0;
  66   3                      }
  67   2      
  68   2              }       
  69   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    106    ----
   CONSTANT SIZE    =     14    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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