7279.lst

7279是串行的LED键盘控制芯片

C51 COMPILER V7.50   7279                                                                  01/01/2003 05:11:19 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE 7279
OBJECT MODULE PLACED IN 7279.OBJ
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE 7279.c OMF2 BROWSE DEBUG

line level    source

   1          #include "MAIN.H"
   2          //-------------------------------------------------------------------
   3          extern ubyte KEY;
   4          extern bit key_flag;
   5          //-------------------------------------------------------------------
   6          void delay(uword i);
   7          
   8          //--------------------------------------------------------------------
   9          
  10          void H_Delay(ubyte i){
  11   1      for(;i>=2;){i--;}
  12   1      return;
  13   1      }
  14          
  15          void HD7279_SendByte( unsigned char out_byte)
  16          { 
  17   1      unsigned char i;
  18   1      HD7279_CS=0; 
  19   1      H_Delay(6); 
  20   1      for(i=0;i<8;i++) 
  21   1      { 
  22   2      if(out_byte&0x80) { HD7279_DATA=1; } 
  23   2      else { HD7279_DATA=0; } 
  24   2      HD7279_CLK=1; 
  25   2      H_Delay(3); 
  26   2      HD7279_CLK=0; 
  27   2      H_Delay(3); 
  28   2      out_byte=out_byte<<1;
  29   2      } 
  30   1      HD7279_DATA=0;
  31   1      return;
  32   1      }
  33          
  34          void disp(ubyte cmd, ubyte dta) //写入7279
  35          {
  36   1      HD7279_SendByte(cmd);
  37   1      H_Delay(2);
  38   1      HD7279_SendByte(dta);
  39   1      }
  40          
  41          
  42          ubyte HD7279_ReceiveByte()
  43          { 
  44   1      ubyte i, in_byte;
  45   1      SFR_PAGE(_pp0, noSST);         // switch to page 0
  46   1      P3_DIR        =  0xef;         // load direction register
  47   1      HD7279_DATA=1; 
  48   1      H_Delay(6); 
  49   1      for(i=0;i<8;i++) 
  50   1      {HD7279_CLK=1; 
  51   2      H_Delay(3); 
  52   2      in_byte=in_byte<<1; 
  53   2      if(HD7279_DATA) { in_byte=in_byte|0x01; } 
  54   2      HD7279_CLK=0; 
  55   2      H_Delay(3); 
C51 COMPILER V7.50   7279                                                                  01/01/2003 05:11:19 PAGE 2   

  56   2      } 
  57   1      HD7279_DATA=0; 
  58   1      P3_DIR        =  0xff;         // load direction register
  59   1      return (in_byte);
  60   1      }
  61          void Getkey(){
  62   1      HD7279_SendByte(HD7279_READ);
  63   1      KEY=HD7279_ReceiveByte();
  64   1      key_flag=1;
  65   1      return;
  66   1      }
  67          
  68          
  69          
  70          
  71          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    135    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
   EDATA SIZE       =   ----    ----
   HDATA SIZE       =   ----    ----
   XDATA CONST SIZE =   ----    ----
   FAR CONST SIZE   =   ----    ----
END OF MODULE INFORMATION.


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