c9f2308a1d
This moves the time conversion function to timefuncs since it has uses on ports that don't use the FAT driver. This function has no dependency on the FAT driver as it is so this should not cause any issues. To reflect this separation the function was renamed to dostime_mktime since it is really for DOS timestamps. The places where it was used have also been updated. Change-Id: Id98b1448d5c6fcda286846e1d2c736db682bfb52
169 lines
3.9 KiB
C
169 lines
3.9 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
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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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#ifdef HAVE_RTC_IRQ
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#include "rtc-target.h"
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#endif
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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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time_t dostime_mktime(uint16_t dosdate, uint16_t dostime)
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{
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/* this knows our mktime() only uses these struct tm fields */
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struct tm tm;
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tm.tm_sec = ((dostime ) & 0x1f) * 2;
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tm.tm_min = ((dostime >> 5) & 0x3f);
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tm.tm_hour = ((dostime >> 11) );
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tm.tm_mday = ((dosdate ) & 0x1f);
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tm.tm_mon = ((dosdate >> 5) & 0x0f) - 1;
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tm.tm_year = ((dosdate >> 9) ) + 80;
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return mktime(&tm);
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}
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#if !CONFIG_RTC
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static inline bool rtc_dirty(void)
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{
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return true;
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}
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static inline int rtc_read_datetime(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 = 4;
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tm->tm_yday = 0;
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return 1;
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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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/* Don't read the RTC more than once per second
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* returns true if the rtc needs to be read
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* targets may override with their own implementation
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*/
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#ifndef HAVE_RTC_IRQ
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static inline bool rtc_dirty(void)
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{
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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, 1/5th of a second off */
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timeout = current_tick / HZ * HZ + 6*HZ / 5;
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return true;
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}
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return false;
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}
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#endif /* HAVE_RTC_IRQ */
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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 (rtc_dirty())
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{
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rtc_read_datetime(&tm);
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tm.tm_isdst = -1; /* Not implemented for now */
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}
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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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void set_day_of_year(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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d+=m*30;
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if( ( (m>1) && !(y%4) ) && ( (y%100) || !(y%400) ) )
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d++;
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if(m>6)
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{
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d+=4;
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m-=7;
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}
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tm->tm_yday = d + ((m+1) /2);
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}
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#endif /* CONFIG_RTC */
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