ed73a3274c
Flyspray: FS#10514 Author: Laurent Papier and myself git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22255 a1c6a512-1295-4272-9138-f99709370657
234 lines
6.4 KiB
C
234 lines
6.4 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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#if !defined SIMULATOR || !CONFIG_RTC
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static struct tm tm;
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#endif /* !defined SIMULATOR || !CONFIG_RTC */
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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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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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struct tm *get_time(void)
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{
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#ifndef SIMULATOR
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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 (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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#if CONFIG_RTC != RTC_JZ47XX
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char rtcbuf[7];
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rtc_read_datetime(rtcbuf);
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tm.tm_sec = ((rtcbuf[0] & 0x70) >> 4) * 10 + (rtcbuf[0] & 0x0f);
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tm.tm_min = ((rtcbuf[1] & 0x70) >> 4) * 10 + (rtcbuf[1] & 0x0f);
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tm.tm_hour = ((rtcbuf[2] & 0x30) >> 4) * 10 + (rtcbuf[2] & 0x0f);
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tm.tm_wday = rtcbuf[3] & 0x07;
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tm.tm_mday = ((rtcbuf[4] & 0x30) >> 4) * 10 + (rtcbuf[4] & 0x0f);
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tm.tm_mon = ((rtcbuf[5] & 0x10) >> 4) * 10 + (rtcbuf[5] & 0x0f) - 1;
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#ifdef IRIVER_H300_SERIES
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/* Special kludge to coexist with the iriver firmware. The iriver firmware
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stores the date as 1965+nn, and allows a range of 1980..2064. We use
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1964+nn here to make leap years work correctly, so the date will be one
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year off in the iriver firmware but at least won't be reset anymore. */
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tm.tm_year = ((rtcbuf[6] & 0xf0) >> 4) * 10 + (rtcbuf[6] & 0x0f) + 64;
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#else /* Not IRIVER_H300_SERIES */
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tm.tm_year = ((rtcbuf[6] & 0xf0) >> 4) * 10 + (rtcbuf[6] & 0x0f) + 100;
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#endif /* IRIVER_H300_SERIES */
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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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#else /* CONFIG_RTC == RTC_JZ47XX */
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rtc_read_datetime((unsigned char*)&tm);
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#endif /* CONFIG_RTC */
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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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#else /* SIMULATOR */
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#if CONFIG_RTC
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time_t now = time(NULL);
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return localtime(&now);
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#else /* Simulator, no RTC */
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fill_default_tm(&tm);
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return &tm;
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#endif
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#endif /* SIMULATOR */
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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 CONFIG_RTC != RTC_JZ47XX
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char rtcbuf[7];
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#endif
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if (valid_time(tm))
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{
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#if CONFIG_RTC != RTC_JZ47XX
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rtcbuf[0]=((tm->tm_sec/10) << 4) | (tm->tm_sec%10);
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rtcbuf[1]=((tm->tm_min/10) << 4) | (tm->tm_min%10);
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rtcbuf[2]=((tm->tm_hour/10) << 4) | (tm->tm_hour%10);
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rtcbuf[3]=tm->tm_wday;
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rtcbuf[4]=((tm->tm_mday/10) << 4) | (tm->tm_mday%10);
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rtcbuf[5]=(((tm->tm_mon+1)/10) << 4) | ((tm->tm_mon+1)%10);
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#ifdef IRIVER_H300_SERIES
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/* Iriver firmware compatibility kludge, see get_time(). */
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rtcbuf[6]=(((tm->tm_year-64)/10) << 4) | ((tm->tm_year-64)%10);
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#else
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rtcbuf[6]=(((tm->tm_year-100)/10) << 4) | ((tm->tm_year-100)%10);
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#endif
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rc = rtc_write_datetime(rtcbuf);
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#else
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rc = rtc_write_datetime((unsigned char*)tm);
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#endif
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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
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(void)tm;
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return 0;
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#endif
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}
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#if CONFIG_RTC
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/* mktime() code taken from lynx-2.8.5 source, written
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by Philippe De Muyter <phdm@macqel.be> */
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time_t mktime(struct tm *t)
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{
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short month, year;
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time_t result;
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static int m_to_d[12] =
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{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
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month = t->tm_mon;
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year = t->tm_year + month / 12 + 1900;
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month %= 12;
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if (month < 0)
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{
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year -= 1;
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month += 12;
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}
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result = (year - 1970) * 365 + (year - 1969) / 4 + m_to_d[month];
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result = (year - 1970) * 365 + m_to_d[month];
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if (month <= 1)
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year -= 1;
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result += (year - 1968) / 4;
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result -= (year - 1900) / 100;
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result += (year - 1600) / 400;
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result += t->tm_mday;
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result -= 1;
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result *= 24;
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result += t->tm_hour;
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result *= 60;
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result += t->tm_min;
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result *= 60;
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result += t->tm_sec;
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return(result);
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}
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#endif
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int day_of_week(int m, int d, int y)
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{
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char mo[12] = { 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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return (d + mo[m] + y + y/4 - y/100 + y/400) % 7;
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}
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void yearday_to_daymonth(int yd, int y, int *d, int *m)
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{
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short t[12] = { 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 };
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int i;
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if((y%4 == 0 && y%100 != 0) || y%400 == 0)
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{
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for(i=1;i<12;i++)
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t[i]++;
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}
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yd++;
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if(yd <= 31)
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{
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*d = yd;
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*m = 0;
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}
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else
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{
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for(i=1;i<12;i++)
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{
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if(yd <= t[i])
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{
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*d = yd - t[i-1];
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*m = i;
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break;
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}
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}
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}
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}
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