rtc.lst

矿工定位系统单端

C51 COMPILER V7.05   RTC                                                                   04/13/2004 13:35:27 PAGE 1   


C51 COMPILER V7.05, COMPILATION OF MODULE RTC
OBJECT MODULE PLACED IN rtc.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE rtc.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          //rtc.c - code recommendation for C header file
   2          /***********************************************************************
   3          MODULE:    Real Time Clock
   4          VERSION:   1.00
   5          CONTAINS:  Routines for controlling the Real Time Clock/System Timer
   6                     on the Philips P89LPC932
   7          COPYRIGHT: Embedded Systems Academy, Inc. - www.esacademy.com
   8          LICENSE:   May be freely used in commercial and non-commercial code
   9                     without royalties provided this copyright notice remains
  10                     in this file and unaltered
  11          WARNING:   IF THIS FILE IS REGENERATED BY CODE ARCHITECT ANY CHANGES
  12                     MADE WILL BE LOST. WHERE POSSIBLE USE ONLY CODE ARCHITECT
  13                     TO CHANGE THE CONTENTS OF THIS FILE
  14          GENERATED: On "Feb 24 2004" at "16:21:01" by Code Architect 2.03
  15          ***********************************************************************/
  16          
  17          // SFR description needs to be included
  18          #include<REG922.h>
  19          #include "rtc.h"
  20          #include "watchdogrtc.h"
  21          
  22          /***********************************************************************
  23          DESC:    Initializes the Real Time Clock and starts it running
  24                   Generates an interrupt every 1.997ms
  25                   Clock source: CPU Clock at 7.3728 MHz
  26          RETURNS: Nothing
  27          CAUTION: Set EA to 1 to enable interrupts
  28          ************************************************************************/
  29          void rtc_init(void)
  30          {
  31   1        // set reload value
  32   1        // count frequency = clock source / 128 / RTCH,RTCL
  33   1        RTCH = 0xfF;
  34   1        RTCL = 0xFF;
  35   1      
  36   1        // select CPU Clock, enable interrupt source
  37   1        RTCCON = 0x62;
  38   1      
  39   1        // initialize watchdog/real time clock interrupt
  40   1        watchdogrtc_isrinit();
  41   1      
  42   1        // start real time clock
  43   1        RTCCON |= 0x01;
  44   1      }
  45          
  46          /***********************************************************************
  47          DESC:    Starts the Real Time Clock
  48          RETURNS: Nothing
  49          CAUTION: rtc_init must be called first
  50          ************************************************************************/
  51          void rtc_start(void)
  52          {
  53   1        // start the real time clock
  54   1        RTCCON |= 0x01;
  55   1      }
C51 COMPILER V7.05   RTC                                                                   04/13/2004 13:35:27 PAGE 2   

  56          
  57          /***********************************************************************
  58          DESC:    Stops the Real Time Clock
  59          RETURNS: Nothing
  60          CAUTION: rtc_init must be called first
  61          ************************************************************************/
  62          void rtc_stop(void)
  63          {
  64   1        // stop the real time clock
  65   1        RTCCON &= ~0x01;
  66   1      }
  67          
  68          
  69          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     24    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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