ff1c567417
Without an RTC, Rockbox doesn't keep time. In that situation, USB time sync previously did nothing but reported success. After this change, the USB time sync request won't be recognized on those targets. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31319 a1c6a512-1295-4272-9138-f99709370657
120 lines
3 KiB
C
120 lines
3 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
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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 <stdio.h> /* get NULL */
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#include "config.h"
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#include "kernel.h"
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#include "rtc.h"
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#include "timefuncs.h"
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#include "debug.h"
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static struct tm tm;
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#if !CONFIG_RTC
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static void fill_default_tm(struct tm *tm)
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{
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tm->tm_sec = 0;
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tm->tm_min = 0;
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tm->tm_hour = 0;
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tm->tm_mday = 1;
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tm->tm_mon = 0;
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tm->tm_year = 70;
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tm->tm_wday = 1;
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tm->tm_yday = 0; /* Not implemented for now */
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tm->tm_isdst = -1; /* Not implemented for now */
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}
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#endif /* !CONFIG_RTC */
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#if CONFIG_RTC
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bool valid_time(const struct tm *tm)
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{
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if (tm->tm_hour < 0 || tm->tm_hour > 23 ||
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tm->tm_sec < 0 || tm->tm_sec > 59 ||
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tm->tm_min < 0 || tm->tm_min > 59 ||
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tm->tm_year < 100 || tm->tm_year > 199 ||
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tm->tm_mon < 0 || tm->tm_mon > 11 ||
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tm->tm_wday < 0 || tm->tm_wday > 6 ||
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tm->tm_mday < 1 || tm->tm_mday > 31)
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return false;
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else
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return true;
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}
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#endif /* CONFIG_RTC */
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struct tm *get_time(void)
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{
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#if CONFIG_RTC
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static long timeout = 0;
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/* Don't read the RTC more than once per second */
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if (TIME_AFTER(current_tick, timeout))
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{
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/* Once per second, 1/10th of a second off */
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timeout = HZ * (current_tick / HZ + 1) + HZ / 5;
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rtc_read_datetime(&tm);
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tm.tm_yday = 0; /* Not implemented for now */
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tm.tm_isdst = -1; /* Not implemented for now */
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}
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#else /* No RTC */
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fill_default_tm(&tm);
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#endif /* RTC */
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return &tm;
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}
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int set_time(const struct tm *tm)
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{
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#if CONFIG_RTC
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int rc;
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if (valid_time(tm))
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{
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rc = rtc_write_datetime(tm);
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if (rc < 0)
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return -1;
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else
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return 0;
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}
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else
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{
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return -2;
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}
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#else /* No RTC */
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(void)tm;
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return -1;
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#endif /* RTC */
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}
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#if CONFIG_RTC
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void set_day_of_week(struct tm *tm)
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{
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int y=tm->tm_year+1900;
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int d=tm->tm_mday;
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int m=tm->tm_mon;
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static const char mo[] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 };
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if(m == 0 || m == 1) y--;
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tm->tm_wday = (d + mo[m] + y + y/4 - y/100 + y/400) % 7;
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}
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#endif /* CONFIG_RTC */
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