unsigned long getMillisecondsSinceUnixEpoch(DateTime dt) {
unsigned long seconds = 0;
// Get everything as seconds first
seconds += dt.second;
seconds += dt.minute * SECONDS_PER_MINUTE;
seconds += dt.hour * SECONDS_PER_HOUR;
seconds += dt.day * SECONDS_PER_DAY;
const unsigned int year = convertToFullYear(dt.partialYear);
seconds += getDayCountUpToMonthWithYear(dt.month, year) * SECONDS_PER_DAY;
seconds += getDayCountUpToYearSinceUnixEpoch(year) * SECONDS_PER_DAY;
// And then convert seconds to millis and add in the remaining millis
return seconds * MILLIS_PER_SECOND + dt.millisecond;
}
millis_t getMillisecondsSinceUnixEpoch(DateTime dt)
{
if (!isValidDateTime(dt))
return 0ll;
millis_t seconds = 0;
// Get everything as seconds first. No changes since 0 based.
seconds += dt.second;
seconds += dt.minute * SECONDS_PER_MINUTE;
seconds += dt.hour * SECONDS_PER_HOUR;
// Subtract 1 from day since they start at 1 instead of 0.
seconds += (dt.day - 1) * SECONDS_PER_DAY;
seconds += getDayCountUpToMonthWithYear(dt.month, dt.year) * SECONDS_PER_DAY;
seconds += getDayCountUpToYearSinceUnixEpoch(dt.year) * SECONDS_PER_DAY;
// And then convert seconds to millis and add in the remaining millis
return seconds * MILLIS_PER_SECOND + dt.millisecond;
}
unsigned int getDayCountUpToPartialYearSinceUnixEpoch(const unsigned int partialYear) {
return getDayCountUpToYearSinceUnixEpoch(convertToFullYear(partialYear));
}
