C51 COMPILER V7.02b   CALENDARCLK                                                          12/10/2005 19:36:25 PAGE 1   


C51 COMPILER V7.02b, COMPILATION OF MODULE CALENDARCLK
OBJECT MODULE PLACED IN CalendarClk.OBJ
COMPILER INVOKED BY: E:\EDATOOLS\KEILC7.0\C51\BIN\C51.EXE CalendarClk.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*****************************************/
   2          /* Copyright (c) 2005, 通信工程學(xué)院      */
   3          /* All rights reserved.                  */
   4          /* 作    者：戴 佳                                               */
   5          /*****************************************/
   6          
   7          #include "CalendarClk.h"
   8          
   9          /* 從串行口獲取數(shù)據(jù)函數(shù)，數(shù)據(jù)包括：year1,month1,dayofweek1,
  10          dayofmonth1,hour1,min1。如果獲取到正確數(shù)據(jù)則返回1，否則返回0 */
  11          uchar getdata()
  12          {
  13   1              // 略去
  14   1      }
*** WARNING C173 IN LINE 14 OF CALENDARCLK.C: missing return-expression
  15          
  16          /* 設(shè)置日歷和時鐘函數(shù) */
  17          void settime()
  18          {
  19   1              REG_B = REG_B|0x80;                     // SET=1，芯片DS12C887處于設(shè)置狀態(tài)
  20   1      
  21   1              MIN = min1;
  22   1              HOUR = hour1;
  23   1              DAYOFWEEK = dayofweek1;
  24   1              DAYOFMONTH = dayofmonth1;
  25   1              MONTH = month1;
  26   1              YEAR = year1;
  27   1      
  28   1              REG_B = REG_B&0x7f;                 // SET=0，芯片DS12C887恢復(fù)正常數(shù)據(jù)更新狀態(tài)
  29   1      }
  30          
  31          
  32          /* 獲取日歷時鐘函數(shù) */
  33          void gettime()
  34          {
  35   1              while (REG_A&0x80==0x00)        // 直到UIP=0時，才能讀取日歷時鐘信息    {
  36   1              {       
  37   2                      min2 = MIN ;
  38   2                      hour2 = HOUR;
  39   2                      dayofweek2 = DAYOFWEEK;
  40   2                      dayofmonth2 = DAYOFMONTH;
  41   2                  month2 = MONTH;
  42   2                      year2 = YEAR;
  43   2              }
  44   1      }
  45          
  46          /* 13位數(shù)碼管顯示年、月、日、星期、時、分 */
  47          void display()
  48          {
  49   1              // 略去
  50   1      }
  51          
  52          /* 串口初始化函數(shù) */
  53          void init_serial()
  54          {
C51 COMPILER V7.02b   CALENDARCLK                                                          12/10/2005 19:36:25 PAGE 2   

  55   1              TMOD = 0x20;                            // 定時器T1使用工作方式2
  56   1              TH1 = 250;
  57   1              TL1 = 250;
  58   1              TR1 = 1;                                        // 開始計時
  59   1              PCON = 0x80;                            // SMOD = 1
  60   1              SCON = 0x50;                            // 工作方式1，波特率9600kbit/s，允許接收 
  61   1      }
  62          
  63          
  64          void main(void)
  65          {
  66   1              uchar setflag;
  67   1              init_serial();
  68   1      
  69   1              /* 設(shè)置DV2、DV1、DV0為010，打開芯片DS12C877內(nèi)部晶振 */
  70   1              REG_A = REG_A&0xaf;                     // DV2=DV0=0
  71   1              REG_A = REG_A|0x20;                     // DV1=0
  72   1      
  73   1              REG_B = REG_B&0x7b;                     // SET=0，時間數(shù)據(jù)正常更新；DM=0,二進制數(shù)據(jù)模式
  74   1              REG_B = REG_B|0x02;                     // 寄存器B的24/12位置1，24小時時間模式
  75   1              
  76   1              while (1)
  77   1              {
  78   2                      setflag = getdata();    // 通過查詢方式獲取串口數(shù)據(jù)
  79   2              
  80   2                      /* 如果獲取到正確數(shù)據(jù)，則設(shè)置時間 */
  81   2                      if (setflag==0x01)
  82   2                              settime();
  83   2              
  84   2                      /* 調(diào)用獲取日歷時鐘函數(shù) */
  85   2                      gettime();
  86   2                      
  87   2                      /* 13位數(shù)碼管顯示日歷、星期和時間信息 */
  88   2                      display();
  89   2              }               
  90   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    106    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     12    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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