led.lst

51单片机的AD程序

C51 COMPILER V8.08   LED                                                                   06/20/2007 16:16:06 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE LED
OBJECT MODULE PLACED IN LED.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE LED.c BROWSE DEBUG OBJECTEXTEND TABS(2)

line level    source

   1          #include <REGX51.H>
   2          #include "type.h"
   3          #include "config.h"
   4          //=======================================================
   5          // 四位共阳/阴数码管管脚图(从正面观看,第一脚为起点,管脚的顺序是逆时针方向排列)
   6          //           e   1   2   d   g   3 (1~4代表显示的位,左起)
   7          //           1   2   3   4   5   6 (引脚)           
   8          //         ___    ___    ___    ___         ___
   9          //        |   |  |   |  |   |  |   |     f | a | b
  10          //        |___|  |___|  |___|  |___|       |___|
  11          //        | 1 |  | 2 |  | 3 |  | 4 |     e | g | c
  12          //        |___|  |___|  |___|  |___|       |___| . h(dp) 
  13          //                                            d
  14          //          12  11   10   9   8   7
  15          //           c   h    4   f   a   b
  16          //=======================================================
  17          
  18          sbit DS=P1^0;
  19          sbit ST_CP=P1^1;
  20          sbit SH_CP=P1^2; 
  21          
  22          #define DispSel(x)   (P1=((P1&0x0f)|(1<<x)))
  23          
  24          unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00}; 
  25          
  26          void DispData(uchar x)
  27          {
  28   1        uchar i;
  29   1        SH_CP = 0;
  30   1        ST_CP = 0;
  31   1        for(i=0;i<8;i++)
  32   1        {
  33   2          if(x&0x80)            //一位一位数据通过DS(P1_0)输出，先输出高位
  34   2          {
  35   3            DS = 1;
  36   3          }
  37   2          else 
  38   2          {
  39   3            DS = 0;
  40   3          }
  41   2          ST_CP = 1;              //上升沿有效，ST对应74HC595的ST_CP，逐位移位输入，但Qn引脚不改变
  42   2          ST_CP = 0;
  43   2          x<<=1;
  44   2        }
  45   1        SH_CP = 1;                //上升沿有效，SH对应74HC595的SH_CP，当8位数据均移入后，才改变Qn的引脚电平，并行
             -输出8位数据
  46   1      }
  47          
  48          void Disp(uchar *p)
  49          { 
  50   1        uchar i; 
  51   1        for(i=7;i>3;i--)
  52   1        {
  53   2          DispSel(i);
  54   2          //if(i==4)delay_1ms();
C51 COMPILER V8.08   LED                                                                   06/20/2007 16:16:06 PAGE 2   

  55   2          DispData(dispcode[*p++]);
  56   2          delay_1ms();
  57   2          //DispData(0xff);       //关显示
  58   2        }
  59   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     99    ----
   CONSTANT SIZE    =     11    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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