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/*
* time.cc
*
* Copyright (C) 2011 Tim Marston <tim@ed.am> and Dan Marston.
*
* This file is part of propeller-clock (hereafter referred to as "this
* program"). See http://ed.am/dev/software/arduino/propeller-clock for more
* information.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "time.h"
#include <DS1307.h>
#include <Wire.h>
Time &Time::get_instance()
{
static Time time;
return time;
}
int Time::get_hours()
{
return _hours;
}
int Time::get_minutes()
{
return _minutes;
}
int Time::get_seconds()
{
return _seconds;
}
void Time::update()
{
// how many milliseonds have elapsed since we last checked?
unsigned long millis = ::millis();
unsigned long delta = millis - _last_millis + _carry;
// update the previous time and carried-over milliseconds
_last_millis = millis;
_carry = delta % 1000;
// add the seconds that have passed to the time
_seconds += delta / 1000;
while( _seconds >= 60 ) {
_seconds -= 60;
_minutes++;
if( _minutes >= 60 ) {
_minutes -= 60;
_hours++;
if( _hours >= 24 )
_hours -= 24;
}
}
}
Time::Time()
:
_last_millis( millis() ),
_carry( 0 )
{
// get the time from the real-time clock
int rtc_data[ 7 ];
RTC.get( rtc_data, true );
_hours = rtc_data[ DS1307_HR ];
_minutes = rtc_data[ DS1307_MIN ];
_seconds = rtc_data[ DS1307_SEC ];
}
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