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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "rtc.h"
#include "timefuncs.h"
#include "debug.h"
#ifndef SIMULATOR
static struct tm tm;
#endif
bool valid_time(const struct tm *tm)
{
if (tm->tm_hour < 0 || tm->tm_hour > 23 ||
tm->tm_sec < 0 || tm->tm_sec > 59 ||
tm->tm_min < 0 || tm->tm_min > 59 ||
tm->tm_year < 100 || tm->tm_year > 199 ||
tm->tm_mon < 0 || tm->tm_mon > 11 ||
tm->tm_wday < 0 || tm->tm_wday > 6 ||
tm->tm_mday < 1 || tm->tm_mday > 31)
return false;
else
return true;
}
struct tm *get_time(void)
{
#ifndef SIMULATOR
#ifdef HAVE_RTC
char rtcbuf[8];
/* We don't need the first byte, but we want the indexes in the
buffer to match the data sheet */
rtc_read_multiple(1, &rtcbuf[1], 7);
tm.tm_sec = ((rtcbuf[1] & 0x70) >> 4) * 10 + (rtcbuf[1] & 0x0f);
tm.tm_min = ((rtcbuf[2] & 0x70) >> 4) * 10 + (rtcbuf[2] & 0x0f);
tm.tm_hour = ((rtcbuf[3] & 0x30) >> 4) * 10 + (rtcbuf[3] & 0x0f);
tm.tm_mday = ((rtcbuf[5] & 0x30) >> 4) * 10 + (rtcbuf[5] & 0x0f);
tm.tm_mon = ((rtcbuf[6] & 0x10) >> 4) * 10 + (rtcbuf[6] & 0x0f) - 1;
tm.tm_year = ((rtcbuf[7] & 0xf0) >> 4) * 10 + (rtcbuf[7] & 0x0f) + 100;
tm.tm_wday = rtcbuf[4] & 0x07;
if(tm.tm_wday == 7)
tm.tm_wday = 0;
tm.tm_yday = 0; /* Not implemented for now */
tm.tm_isdst = -1; /* Not implemented for now */
#else
tm.tm_sec = 0;
tm.tm_min = 0;
tm.tm_hour = 0;
tm.tm_mday = 1;
tm.tm_mon = 0;
tm.tm_year = 70;
tm.tm_wday = 1;
tm.tm_yday = 0; /* Not implemented for now */
tm.tm_isdst = -1; /* Not implemented for now */
#endif
return &tm;
#else
time_t now = time(NULL);
return localtime(&now);
#endif
}
int set_time(const struct tm *tm)
{
#ifdef HAVE_RTC
int rc;
int tmp;
if (valid_time(tm))
{
rc = rtc_write(1, ((tm->tm_sec/10) << 4) | (tm->tm_sec%10));
rc |= rtc_write(2, ((tm->tm_min/10) << 4) | (tm->tm_min%10));
rc |= rtc_write(3, ((tm->tm_hour/10) << 4) | (tm->tm_hour%10));
tmp = tm->tm_wday;
if(tmp == 0)
tmp = 7;
rc |= rtc_write(4, tmp);
rc |= rtc_write(5, ((tm->tm_mday/10) << 4) | (tm->tm_mday%10));
rc |= rtc_write(6, (((tm->tm_mon+1)/10) << 4) | ((tm->tm_mon+1)%10));
rc |= rtc_write(7, (((tm->tm_year-100)/10) << 4) | ((tm->tm_year-100)%10));
rc |= rtc_write(8, 0x80); /* Out=1, calibration = 0 */
if(rc)
return -1;
else
return 0;
}
else
{
return -2;
}
#else
(void)tm;
return 0;
#endif
}
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