68c686957b
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19093 a1c6a512-1295-4272-9138-f99709370657
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Linus Nielsen Feltzing, Uwe Freese, Laurent Baum
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "i2c.h"
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#include "rtc.h"
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#include "kernel.h"
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#include "system.h"
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void rtc_init(void)
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{
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/* RTC Enable */
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RTCCON |= 1;
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}
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int rtc_read_datetime(unsigned char* buf)
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{
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buf[0] = BCDSEC;
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buf[1] = BCDMIN;
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buf[2] = BCDHOUR;
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buf[3] = BCDDAY-1; /* timefuncs wants 0..6 for wday */
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buf[4] = BCDDATE;
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buf[5] = BCDMON;
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buf[6] = BCDYEAR;
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return 1;
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}
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int rtc_write_datetime(unsigned char* buf)
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{
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BCDSEC = buf[0];
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BCDMIN = buf[1];
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BCDHOUR = buf[2];
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BCDDAY = buf[3]+1; /* chip wants 1..7 for wday */
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BCDDATE = buf[4];
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BCDMON = buf[5];
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BCDYEAR = buf[6];
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return 1;
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}
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#ifdef HAVE_RTC_ALARM
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/* This alarm code works with a flashed bootloader. This will not work with
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* the OF bootloader.
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*/
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/* Check whether the unit has been started by the RTC alarm function */
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bool rtc_check_alarm_started(bool release_alarm)
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{
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if (GSTATUS3)
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{
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GSTATUS3 &= ~release_alarm;
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return true;
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}
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else
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{
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return false;
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}
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}
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/* Check to see if the alarm has flaged since the last it was checked */
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bool rtc_check_alarm_flag(void)
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{
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bool ret=SRCPND & 0x40000000;
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SRCPND=RTC_MASK;
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return ret;
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}
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/* set alarm time registers to the given time (repeat once per day) */
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void rtc_set_alarm(int h, int m)
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{
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ALMMIN=(((m / 10) << 4) | (m % 10)) & 0x7f; /* minutes */
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ALMHOUR=(((h / 10) << 4) | (h % 10)) & 0x3f; /* hour */
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}
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/* read out the current alarm time */
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void rtc_get_alarm(int *h, int *m)
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{
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*m=((ALMMIN & 0x70) >> 4) * 10 + (ALMMIN & 0x0f);
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*h=((ALMHOUR & 0x30) >> 4) * 10 + (ALMHOUR & 0x0f);
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}
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/* turn alarm on or off by setting the alarm flag enable
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* returns false if alarm was set and alarm flag (output) is off
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*/
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bool rtc_enable_alarm(bool enable)
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{
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if (enable)
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{
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RTCALM=0x46;
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}
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else
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{
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RTCALM=0x00;
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}
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return false; /* all ok */
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}
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#endif
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