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Small fixes to minmea_gettime

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* Handle four digit years provided by ZDA in minmea_gettime
* Assume GPS epoch to allow dates prior 2000 to be parsed
This commit is contained in:
asund 2017-09-25 09:23:26 -07:00
parent dbf51f03c5
commit 486da2bb5b
1 changed files with 5 additions and 1 deletions
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minmea.c
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@ -619,7 +619,11 @@ int minmea_gettime(struct timespec *ts, const struct minmea_date *date, const st
struct tm tm; struct tm tm;
memset(&tm, 0, sizeof(tm)); memset(&tm, 0, sizeof(tm));
tm.tm_year = 2000 + date->year - 1900; tm.tm_year = date->year % 100; // ZDA parser stores 4 digit year, filter centuries here so raw information is still preserved for user.
if (tm.tm_year < 80) // GPS epoch begins 1980, assume a year range of 1980 to 2079 for the library.
{
tm.tm_year += 2000 - 1900;
}
tm.tm_mon = date->month - 1; tm.tm_mon = date->month - 1;
tm.tm_mday = date->day; tm.tm_mday = date->day;
tm.tm_hour = time_->hours; tm.tm_hour = time_->hours;