max7219.lst

温度控制系统——毕业设计

C51 COMPILER V7.06   MAX7219                                                               12/29/2010 21:18:42 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE MAX7219
OBJECT MODULE PLACED IN max7219.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE max7219.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include "reg52.h"
   2          sbit cs         =       P0^1;
   3          sbit clk        =       P0^2;
   4          sbit din        =       P0^0;
   5          sbit dout       =       P0^3;
   6          unsigned char const num[13]={0x7E,0x30,0x6D,0x79,0x33,0x5B,0x5F,0x70,0x7F,0x7B,0x77,0x1F,0x00}; //0-9,H,L,
             -空格
   7                          
   8          void write_7219(unsigned char add,unsigned char date)
   9          {
  10   1              unsigned char m;
  11   1              cs=0;
  12   1              for(m=0;m<8;m++)
  13   1              {
  14   2                      clk=0;
  15   2                      if((add&0x80)==0x80)din=1;
  16   2                      else din=0;
  17   2                      clk=1;
  18   2                      add=add<<1;     
  19   2              }
  20   1              for(m=0;m<8;m++)
  21   1              {
  22   2                      clk=0;
  23   2                      if((date&0x80)==0x80)din=1;
  24   2                      else din=0;
  25   2                      clk=1;
  26   2                      date=date<<1;
  27   2              }
  28   1              cs=1;
  29   1      }
  30          void write_7219_data(unsigned char add,unsigned date,bit dot)
  31          {
  32   1              date=num[date];
  33   1              if(dot)date=date|0x80;
  34   1              write_7219(add,date);
  35   1      }
  36          
  37          void ini_7219()
  38          {
  39   1              write_7219(0x09,0x00);          //BCD显示模式
  40   1              write_7219(0x0a,0x0F);          //开到最亮
  41   1              write_7219(0x0b,0x03);          //从0到3位
  42   1              write_7219(0x0c,0x01);          //打开显示
  43   1              write_7219(0x0f,0x00);          //正常模式
  44   1      }
  45                  
  46                  


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    105    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     13    ----
C51 COMPILER V7.06   MAX7219                                                               12/29/2010 21:18:42 PAGE 2   

   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----       1
END OF MODULE INFORMATION.


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