rtcdemo.c

sharp的arm920t 7A400的评估板附带光盘Sharp KEVLH7A400 v0.3b Welcome to the SHARP KEV7A400 Evaluation board

 /*****************************************************************************
 *	$Workfile:   rtcdemo.c  $
 *	$Revision:   1.0  $
 *	$Author:   WellsK  $
 *	$Date:   Sep 22 2002 11:00:08  $
 *
 *	Project: RTC time conversion example
 *
 *	Description:
 *    This example converts the RTC count (stored in epoch time format) to a
 *    formatted time string.
 *
 *	Revision History:
 *	$Log:   //smaicnt2/pvcs/VM/CDROM/archives/KEV7A400/Software/Examples/rtcdemo/rtcdemo.c-arc  $
 * 
 *    Rev 1.0   Sep 22 2002 11:00:08   WellsK
 * Initial revision.
 * 
 * 
 *	COPYRIGHT (C) 2001 SHARP MICROELECTRONICS OF THE AMERICAS, INC.
 *		CAMAS, WA
 ****************************************************************************/
#include "simple_RTC.h"
#include "epoch_time.h"
#include <stdio.h>

int main (void)
{
   INT_32 month, day, year, hour, minute, second;
   UNS_32 input_epoch, present_epoch, old_epoch;

   // Start by enabling the RTC and showing the present 'time' stored
   // in the RTC. On the first instance of this program, the RTC clock
   // value may be undefined.
   RTC_Enable ();
   printf ("The present RTC time is : ");
   Time_Show (RTC_Get_Count ());
   printf ("\n");

   // Prompt the user for the present time and date information
   printf ("Enter the present year (2002):");
   scanf ("%d", &year);
   printf ("Enter the present month (1 - 12):");
   scanf ("%d", &month);
   printf ("Enter the present day (1 - 31):");
   scanf ("%d", &day);

   printf ("Enter the local hour (0 - 23):");
   scanf ("%d", &hour);
   printf ("Enter the local minute (0 - 59):");
   scanf ("%d", &minute);
   printf ("Enter the local second (0 - 59):");
   scanf ("%d", &second);

   // Convert the input time to an equivalent epoch time
   input_epoch = Time_Convert_To_Epoch (year, month, day, hour,
       minute, second);

   // Put the epoch time into the RTC so it will stay updated
   RTC_Set_Count (input_epoch);

   // The count was loaded into the RTC count load register, but
   // will NOT be available until the next RTC clock tick. On the
   // next RTC clock, the load value plus one will move into the
   // RTC count register. To prevent possible time display problems
   // or bad counts, wait until the timer updates to the correct
   // input_epoch value
   printf ("Waiting for RTC count to sync to RTC load...\n");
   while ((input_epoch + 1) != RTC_Get_Count ());
   printf ("Sync'd!\n");

   // Show the input time every second and quit after 10 seconds
   present_epoch = RTC_Get_Count ();
   old_epoch = input_epoch;
   while (present_epoch < (input_epoch + 10))
   {
      if (old_epoch != present_epoch)
      {
         // Only display the time when it changes
         old_epoch = present_epoch;
         printf ("Epoch time : %d, local time : ", present_epoch);
         Time_Show (present_epoch);
         printf ("\n");
      }
      
      present_epoch = RTC_Get_Count ();
   }
 
   return 1;
}