ad转换实验.lst

3000TB51配套实验例程 1八段数码管显示实验 等

C51 COMPILER V7.07   AD转换实验                                                            06/21/2005 17:14:29 PAGE 1   


C51 COMPILER V7.07, COMPILATION OF MODULE AD转换实验
OBJECT MODULE PLACED IN AD转换实验.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE AD转换实验.c DEBUG OBJECTEXTEND

stmt level    source

   1          /* ;    “验证式”      实验十六  A/D转换实验   */
   2          #include <absacc.h>
   3          #include <reg51.h>
   4          #define LEDLen 6
   5          #define MODE 0x03
   6          #define CS0809 XBYTE[0xa000]
   7          #define CAddr XBYTE[0xe100]/* 控制字地址 */
   8          #define OUTBIT XBYTE[0xe101]/*  位控制口 */
   9          #define CLK164 XBYTE[0xe102]/* 段控制口(接164时钟位) */
  10          #define DAT164 XBYTE[0xe102] /* 段控制口(接164数据位) */
  11          #define IN     XBYTE[0xe103] /* 键盘读入口 */
  12          
  13          
  14          unsigned char LEDBuf[LEDLen];  /* 显示缓冲 */
  15          code unsigned char LEDMAP[] = {  /* 八段管显示码 */
  16            0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07,
  17            0x7f, 0x6f, 0x77, 0x7c, 0x39, 0x5e, 0x79, 0x71
  18          };
  19          
  20          void Delay(unsigned char CNT)
  21          {
  22   1        unsigned char i;
  23   1      
  24   1        while (CNT-- !=0)
  25   1          for (i=100; i !=0; i--);
  26   1      }
  27          
  28          void DisplayLED()
  29          {
  30   1        unsigned char i, j;
  31   1        unsigned char Pos;
  32   1        unsigned char LED;
  33   1        
  34   1        Pos = 0x20;  /* 从左边开始显示 */
  35   1        for (i = 0; i < LEDLen; i++) {
  36   2          OUTBIT = 0;     /* 关所有八段管 */
  37   2          LED = LEDBuf[i];
  38   2          for (j = 0; j < 8; j++) {   /* 送164 */
  39   3           if (LED & 0x80) DAT164 = 1 ; else DAT164 = 0 ;
  40   3            CLK164 = CLK164| 0X02;
  41   3            CLK164 = CLK164& 0Xfd;
  42   3            LED <<= 1;
  43   3          }
  44   2          OUTBIT = Pos;  /* 显示一位八段管 */
  45   2          Delay(1);
  46   2          Pos >>= 1;     /* 显示下一位 */
  47   2        }
  48   1        OUTBIT = 0;     /* 关所有八段管 */
  49   1      }
  50          unsigned char Read0809()
  51          {
  52   1        unsigned char i;
  53   1      
  54   1        CS0809 = 0;                /* 起动 A/D */
  55   1        for (i=0; i<0x20; i++) ;   /* 延时 > 100us */
C51 COMPILER V7.07   AD转换实验                                                            06/21/2005 17:14:29 PAGE 2   

  56   1        return(CS0809);            /* 读入结果 */
  57   1      }
  58          
  59          void main()
  60          {
  61   1        
  62   1         unsigned char j;
  63   1          unsigned char b;
  64   1         CAddr= MODE;
  65   1         while(1) {
  66   2           LEDBuf[0] = 0X3F;
  67   2           LEDBuf[1] = 0X7F;
  68   2           LEDBuf[2] = 0X3F;
  69   2           LEDBuf[3] = 0X6F;
  70   2           LEDBuf[4] = 0X00;
  71   2           LEDBuf[5] = 0X00;
  72   2          
  73   2           //b = Read0809();
  74   2      
  75   2           LEDBuf[5] = LEDMAP[Read0809() & 0x0f] ;
  76   2           LEDBuf[4] = LEDMAP[Read0809()>>4 & 0x0f] ;
  77   2           for(j=0; j<5; j++)
  78   2             DisplayLED();   /* 延时  */
  79   2         }
  80   1      }
*** WARNING C280 IN LINE 63 OF AD转换实验.C: 'b': unreferenced local variable
  81          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    180    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      6       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  1 WARNING(S),  0 ERROR(S)