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Fix off-by-one error for months value

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Michael Chisholm 2007-11-04 09:50:02 +00:00
parent 9deb154adb
commit 838cc907d1
1 changed files with 7 additions and 4 deletions
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11
source/filetime.c
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@ -37,6 +37,9 @@
2007-10-30 - Chishm
* Uses standard POSIX time functions
2007-11-04 - Chishm
* Fix off-by-one error for months value
*/
@ -47,8 +50,8 @@
#define MAX_MINUTE 59
#define MAX_SECOND 59
#define MAX_MONTH 12
#define MIN_MONTH 1
#define MAX_MONTH 11
#define MIN_MONTH 0
#define MAX_DAY 31
#define MIN_DAY 1
@ -94,7 +97,7 @@ u16 _FAT_filetime_getDateFromRTC (void) {
return (
(((timeParts.tm_year - 80) & 0x7F) <<9) | // Adjust for MS-FAT base year (1980 vs 1900 for tm_year)
((timeParts.tm_mon & 0xF) << 5) |
(((timeParts.tm_mon + 1) & 0xF) << 5) |
(timeParts.tm_mday & 0x1F)
);
#else
@ -110,7 +113,7 @@ time_t _FAT_filetime_to_time_t (u16 t, u16 d) {
timeParts.tm_sec = (t & 0x1F) << 1;
timeParts.tm_mday = d & 0x1F;
timeParts.tm_mon = (d >> 5) & 0x0F;
timeParts.tm_mon = ((d >> 5) & 0x0F) - 1;
timeParts.tm_year = d >> 9;
timeParts.tm_isdst = 0;