/* Time Counters 
   Last updated 25.10.01
 */

#include "H8.h"
#include "Timers.h"

#ifndef   TimeCounters_H_DEFINED
#define   TimeCounters_H_DEFINED

#define DisableTimer  DisableT0
#define EnableTimer   EnableT0

/* Counters related to real time:
 *
 * Every 1 msec a timer interrupt calls TimeCountersUpdate.
 * MSCount and MSTime is incremented at each interrupt.
 * MSTime is used to keep track of a RealTime counter
 * measured in seconds. When MSTime = 1000 msec
 * this real time counter is incremented.
 *
 * Timer T0 is used. Hence, it is assumed that an interrupt
 * handler for T0 calls TimeCounterUpdate each msec. If another
 * timer is used the DisableT0/EnableT0 should also be changed.
 *
 */

static volatile word MSCount;  /* msec, 0 .. 65535 msec */
static volatile word MSTime;   /* msec, 0 ..   999 msec */
static volatile word RealTime; /* sec,  0 .. 65535  sec */

void TimeCountersUpdate( void )
{    
  MSCount = MSCount + 1;
  MSTime  = MSTime  + 1;
  if ( MSTime == 1000 ) {
    RealTime = RealTime + 1;
    MSTime  = 0;
  }
}

void TimeCountersResetTime( void )
{
  DisableTimer;
  MSTime = 0;
  RealTime = 0;
  EnableTimer;
}

void TimeCountersSetSec( word sec )
{
  DisableTimer;
  MSTime = 0;
  RealTime = sec;
  EnableTimer;
}

void TimeCountersInit ( void )
{
  DisableTimer;
  MSCount = 0;
  MSTime  = 0;
  RealTime = 0;
  EnableTimer;
}	

void TimeCountersClose( void )
{
}
		   
#endif /* TimeCounters_H_DEFINED */