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Diffstat (limited to 'c/src/lib/libbsp/arm/nds/libfat/source/filetime.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/nds/libfat/source/filetime.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/c/src/lib/libbsp/arm/nds/libfat/source/filetime.c b/c/src/lib/libbsp/arm/nds/libfat/source/filetime.c deleted file mode 100644 index 4619225d71..0000000000 --- a/c/src/lib/libbsp/arm/nds/libfat/source/filetime.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - 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. - - 2006-07-11 - Chishm - * Original release - - 2006-09-30 - Chishm - * Validity checks performed on the time supplied by the IPC - * Cleaned up magic numbers - - 2006-10-01 - Chishm - * Fixed incorrect use of bitwise-or instead of logical-or -*/ - - -#include "filetime.h" - -#ifdef NDS -#include <nds/ipc.h> -#endif - -#define HOUR_PM_INDICATOR 40 - -#define MAX_HOUR 23 -#define MAX_MINUTE 59 -#define MAX_SECOND 59 - -#define MAX_YEAR 99 -#define MIN_YEAR 6 // The date is invalid if it's before this year -#define MAX_MONTH 12 -#define MIN_MONTH 1 -#define MAX_DAY 31 -#define MIN_DAY 1 - -// Second values are averages, so time value won't be 100% accurate, -// but should be within the correct month. -#define SECONDS_PER_MINUTE 60 -#define SECONDS_PER_HOUR 3600 -#define SECONDS_PER_DAY 86400 -#define SECONDS_PER_MONTH 2629743 -#define SECONDS_PER_YEAR 31556926 - -u16 _FAT_filetime_getTimeFromRTC (void) { -#ifdef NDS - int hour, minute, second; - hour = (IPC->time.rtc.hours >= HOUR_PM_INDICATOR ? IPC->time.rtc.hours - HOUR_PM_INDICATOR : IPC->time.rtc.hours); - minute = IPC->time.rtc.minutes; - second = IPC->time.rtc.seconds; - - // Check that the values are all in range. - // If they are not, return 0 (no timestamp) - if ((hour < 0) || (hour > MAX_HOUR)) return 0; - if ((minute < 0) || (minute > MAX_MINUTE)) return 0; - if ((second < 0) || (second > MAX_SECOND)) return 0; - - return ( - ((hour & 0x1F) << 11) | - ((minute & 0x3F) << 5) | - ((second >> 1) & 0x1F) - ); -#else - return 0; -#endif -} - - -u16 _FAT_filetime_getDateFromRTC (void) { -#ifdef NDS - int year, month, day; - - year = IPC->time.rtc.year; - month = IPC->time.rtc.month; - day = IPC->time.rtc.day; - - if ((year < MIN_YEAR) || (year > MAX_YEAR)) return 0; - if ((month < MIN_MONTH) || (month > MAX_MONTH)) return 0; - if ((day < MIN_DAY) || (day > MAX_DAY)) return 0; - - return ( - (((year + 20) & 0x7F) <<9) | // Adjust for MS-FAT base year (1980 vs 2000 for DS clock) - ((month & 0xF) << 5) | - (day & 0x1F) - ); -#else - return 0; -#endif -} - -time_t _FAT_filetime_to_time_t (u16 time, u16 date) { - int hour, minute, second; - int day, month, year; - - time_t result; - - hour = time >> 11; - minute = (time >> 5) & 0x3F; - second = (time & 0x1F) << 1; - - day = date & 0x1F; - month = (date >> 5) & 0x0F; - year = date >> 9; - - // Second values are averages, so time value won't be 100% accurate, - // but should be within the correct month. - result = second - + minute * SECONDS_PER_MINUTE - + hour * SECONDS_PER_HOUR - + day * SECONDS_PER_DAY - + month * SECONDS_PER_MONTH - + year * SECONDS_PER_YEAR - ; - - return result; -} |