mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-12-23 10:21:55 +01:00
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/*
|
|
filetime.c
|
|
Conversion of file time and date values to various other types
|
|
|
|
Copyright (c) 2006 Michael "Chishm" Chisholm
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions and the following disclaimer in the documentation and/or
|
|
other materials provided with the distribution.
|
|
3. The name of the author may not be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#include <time.h>
|
|
#include "filetime.h"
|
|
#include "common.h"
|
|
|
|
#define MAX_HOUR 23
|
|
#define MAX_MINUTE 59
|
|
#define MAX_SECOND 59
|
|
|
|
#define MAX_MONTH 11
|
|
#define MIN_MONTH 0
|
|
#define MAX_DAY 31
|
|
#define MIN_DAY 1
|
|
|
|
uint16_t _FAT_filetime_getTimeFromRTC ( void )
|
|
{
|
|
#ifdef USE_RTC_TIME
|
|
struct tm timeParts;
|
|
time_t epochTime;
|
|
|
|
if ( time( &epochTime ) == ( time_t ) - 1 )
|
|
{
|
|
return 0;
|
|
}
|
|
localtime_r( &epochTime, &timeParts );
|
|
|
|
// Check that the values are all in range.
|
|
// If they are not, return 0 (no timestamp)
|
|
if ( ( timeParts.tm_hour < 0 ) || ( timeParts.tm_hour > MAX_HOUR ) ) return 0;
|
|
if ( ( timeParts.tm_min < 0 ) || ( timeParts.tm_min > MAX_MINUTE ) ) return 0;
|
|
if ( ( timeParts.tm_sec < 0 ) || ( timeParts.tm_sec > MAX_SECOND ) ) return 0;
|
|
|
|
return (
|
|
( ( timeParts.tm_hour & 0x1F ) << 11 ) |
|
|
( ( timeParts.tm_min & 0x3F ) << 5 ) |
|
|
( ( timeParts.tm_sec >> 1 ) & 0x1F )
|
|
);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
|
|
uint16_t _FAT_filetime_getDateFromRTC ( void )
|
|
{
|
|
#ifdef USE_RTC_TIME
|
|
struct tm timeParts;
|
|
time_t epochTime;
|
|
|
|
if ( time( &epochTime ) == ( time_t ) - 1 )
|
|
{
|
|
return 0;
|
|
}
|
|
localtime_r( &epochTime, &timeParts );
|
|
|
|
if ( ( timeParts.tm_mon < MIN_MONTH ) || ( timeParts.tm_mon > MAX_MONTH ) ) return 0;
|
|
if ( ( timeParts.tm_mday < MIN_DAY ) || ( timeParts.tm_mday > MAX_DAY ) ) return 0;
|
|
|
|
return (
|
|
( ( ( timeParts.tm_year - 80 ) & 0x7F ) << 9 ) | // Adjust for MS-FAT base year (1980 vs 1900 for tm_year)
|
|
( ( ( timeParts.tm_mon + 1 ) & 0xF ) << 5 ) |
|
|
( timeParts.tm_mday & 0x1F )
|
|
);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
time_t _FAT_filetime_to_time_t ( uint16_t t, uint16_t d )
|
|
{
|
|
struct tm timeParts;
|
|
|
|
timeParts.tm_hour = t >> 11;
|
|
timeParts.tm_min = ( t >> 5 ) & 0x3F;
|
|
timeParts.tm_sec = ( t & 0x1F ) << 1;
|
|
|
|
timeParts.tm_mday = d & 0x1F;
|
|
timeParts.tm_mon = ( ( d >> 5 ) & 0x0F ) - 1;
|
|
timeParts.tm_year = ( d >> 9 ) + 80;
|
|
|
|
timeParts.tm_isdst = 0;
|
|
|
|
return mktime( &timeParts );
|
|
}
|