initt0.lst

set（key6） left（key5） right（key4） up（key3） down（key2） OK(key1) 功能一：时钟 时钟计时； 按下set（一次）键即可调时间

C51 COMPILER V7.50   INITT0                                                                09/11/2008 08:23:58 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE INITT0
OBJECT MODULE PLACED IN InitT0.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE InitT0.c DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          sbit DAT = P2^7;
   3          sbit PL = P2^6;
   4          sbit CLK = P2^5;
   5          sbit Voice=P2^4;                //蜂鸣器
   6          
   7          unsigned char pLED;
   8          unsigned char DispBuf[6];          //缓冲区
   9          unsigned char count;
  10          bit xTim,xKey;
  11          unsigned char KeyVal;
  12          
  13          void InitT0(void)                 //初始化
  14          {
  15   1       pLED = 0;
  16   1          xTim = 0;
  17   1          count = 0;
  18   1          TMOD = (TMOD & 0xF0) |0x01;
  19   1          TH0 = 0xF1;                 // 1/240 s
  20   1          TL0 = 0x00;
  21   1          TR0 = 1;
  22   1          ET0 = 1;
  23   1          EA = 1;
  24   1      }
  25          
  26          void T0Srv(void) interrupt 1 using 1     
  27          {
  28   1      unsigned char i;
  29   1          TH0 = 0xF1;                 // 1/240 s
  30   1          P2 = 0x18| pLED;
  31   1              
  32   1          P0 = DispBuf[pLED];
  33   1          if(++pLED==6) pLED = 0;
  34   1          count++;
  35   1          if((count&0x03)==0)     // 每4次中断16ms读一次按键
  36   1          {
  37   2              CLK = 0;
  38   2              PL = 0;     // Latch Key
  39   2              PL = 1;
  40   2              KeyVal = 0;
  41   2              for(i=0;i<8;i++)
  42   2              {
  43   3                  KeyVal <<= 1; 
  44   3                  if(!DAT) KeyVal |= 0x01;    // 低电平检测
  45   3                  CLK = 1;
  46   3                  CLK = 0;
  47   3              }
  48   2              KeyVal &= 0x3F;
  49   2              xKey = 1;       // 发信号，表示读了一次按键
  50   2          }
  51   1          if(count==240)       // 每240次中断发秒更新标志
  52   1          {
  53   2              count = 0;
  54   2              xTim = 1;
  55   2              
C51 COMPILER V7.50   INITT0                                                                09/11/2008 08:23:58 PAGE 2   

  56   2          } } 
  57          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    119    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      9    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      2    ----
END OF MODULE INFORMATION.


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