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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing, Uwe Freese, Laurent Baum
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "i2c.h"
#include "rtc.h"
#include "kernel.h"
#include "system.h"
void rtc_init(void)
{
/* RTC Enable */
RTCCON |= 1;
}
int rtc_read_datetime(struct tm *tm)
{
tm->tm_sec = BCD2DEC(BCDSEC);
tm->tm_min = BCD2DEC(BCDMIN);
tm->tm_hour = BCD2DEC(BCDHOUR);
tm->tm_wday = BCD2DEC(BCDDAY) - 1; /* timefuncs wants 0..6 for wday */
tm->tm_mday = BCD2DEC(BCDDATE);
tm->tm_mon = BCD2DEC(BCDMON) - 1;
tm->tm_year = BCD2DEC(BCDYEAR) + 100;
return 1;
}
int rtc_write_datetime(const struct tm *tm)
{
BCDSEC = DEC2BCD(tm->tm_sec);
BCDMIN = DEC2BCD(tm->tm_min);
BCDHOUR = DEC2BCD(tm->tm_hour);
BCDDAY = DEC2BCD(tm->tm_wday) + 1; /* chip wants 1..7 for wday */
BCDDATE = DEC2BCD(tm->tm_mday);
BCDMON = DEC2BCD(tm->tm_mon + 1);
BCDYEAR = DEC2BCD(tm->tm_year - 100);
return 1;
}
#ifdef HAVE_RTC_ALARM
/* This alarm code works with a flashed bootloader. This will not work with
* the OF bootloader.
*/
/* Check whether the unit has been started by the RTC alarm function */
bool rtc_check_alarm_started(bool release_alarm)
{
if (GSTATUS3)
{
GSTATUS3 &= ~release_alarm;
return true;
}
else
{
return false;
}
}
/* Check to see if the alarm has flaged since the last it was checked */
bool rtc_check_alarm_flag(void)
{
bool ret=SRCPND & 0x40000000;
SRCPND=RTC_MASK;
return ret;
}
/* set alarm time registers to the given time (repeat once per day) */
void rtc_set_alarm(int h, int m)
{
ALMMIN = DEC2BCD(m); /* minutes */
ALMHOUR = DEC2BCD(h); /* hour */
}
/* read out the current alarm time */
void rtc_get_alarm(int *h, int *m)
{
*m = BCD2DEC(ALMMIN);
*h = BCD2DEC(ALMHOUR);
}
/* turn alarm on or off by setting the alarm flag enable
*/
void rtc_enable_alarm(bool enable)
{
if (enable)
{
RTCALM=0x46;
}
else
{
RTCALM=0x00;
}
}
#endif
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