dispaly.lst

单片机和cpld综合应用的示例

C51 COMPILER V7.20   DISPALY                                                               03/14/2006 16:59:48 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE DISPALY
OBJECT MODULE PLACED IN dispaly.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE dispaly.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg51.h>
   2          #define KEY_WR 0xff00
   3          #define LED_WR 0xff01
   4          
   5          void wr_cpld( unsigned int addr, unsigned char DATA);
   6          unsigned char rd_cpld( unsigned int addr);
   7          void getkey( unsigned char keyin);
   8          
   9          unsigned char led_buf;
  10          
  11          void main(void)
  12          {
  13   1        unsigned char key_buf,buffer;
  14   1                                                key_buf = 0xf7;
  15   1        led_buf = 0xf7;
  16   1       while(1)
  17   1        {
  18   2          buffer = rd_cpld(KEY_WR);
  19   2      if( ! ( key_buf == buffer) && (buffer != 0xf7))  //有键盘被按下立即判断之后写给CPLD
  20   2       {
  21   3         key_buf = buffer;
  22   3         getkey(key_buf);
  23   3         wr_cpld(LED_WR,led_buf);
  24   3      }
  25   2      }
  26   1      }
  27           
  28          void getkey(unsigned char keyin)
  29          {
  30   1      switch (keyin)
  31   1      {
  32   2       case 0x77:
  33   2         led_buf = 0xf5;
  34   2         break;
  35   2       case 0xfd:
  36   2         led_buf = 0xa4;
  37   2         break;
  38   2       case 0xfb:
  39   2         led_buf = 0xb0;
  40   2         break;
  41   2       case 0xf7:
  42   2         led_buf = 0x99;
  43   2         break;
  44   2       case 0xef:
  45   2         led_buf = 0x92;
  46   2         break;
  47   2      case 0xdf:
  48   2         led_buf = 0x82;
  49   2         break;
  50   2      case 0xbf:
  51   2         led_buf = 0xf8;
  52   2         break;
  53   2      case 0x7f:
  54   2         led_buf = 0x80;
  55   2         break;
C51 COMPILER V7.20   DISPALY                                                               03/14/2006 16:59:48 PAGE 2   

  56   2      default:
  57   2         led_buf = 0xc0;
  58   2         break;
  59   2      }
  60   1      }
  61          
  62          void wr_cpld(unsigned int addr,unsigned char DATA) //写到总线上
  63          {
  64   1        *((unsigned char xdata * ) addr)=DATA;  
  65   1      }
  66          
  67          unsigned char rd_cpld (unsigned int addr)
  68          {
  69   1      return * ((unsigned char xdata * ) addr);
  70   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    134    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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