max7219.lst

温度控制系统——毕业设计

C51 COMPILER V7.06   MAX7219                                                               12/22/2010 20:59:35 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          #include "intrins.h"
   3          sbit cs         =       P0^1;
   4          sbit clk        =       P0^2;
   5          sbit din        =       P0^0;
   6          sbit dout       =       P0^3;
   7          void write_7219_data(unsigned char add,unsigned char date)
   8          {
   9   1              unsigned char m;
  10   1              cs=0;
  11   1              for(m=0;m<8;m++)
  12   1              {
  13   2                      clk=0;
  14   2                      if((add&0x80)==0x80)din=1;
  15   2                      else din=0;
  16   2                      clk=1;
  17   2                      add=add<<1;     
  18   2              }
  19   1              for(m=0;m<8;m++)
  20   1              {
  21   2                      clk=0;
  22   2                      if((date&0x80)==0x80)din=1;
  23   2                      else din=0;
  24   2                      clk=1;
  25   2                      date=date<<1;
  26   2              }
  27   1              cs=1;
  28   1      }
  29          void ini_7219()
  30          {
  31   1              write_7219_data(0x09,0xff);             //BCD显示模式
  32   1              write_7219_data(0x0a,0x0F);             //开到最亮
  33   1              write_7219_data(0x0b,0x07);             //从0到7位
  34   1              write_7219_data(0x0c,0x01);             //打开显示
  35   1              write_7219_data(0x0f,0x00);             //正常模式
  36   1      }
  37                  
  38                  


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     88    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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