| import datetime | |
| NTP_EPOCH = datetime.datetime(1900, 1, 1, tzinfo=datetime.timezone.utc) | |
| def current_datetime() -> datetime.datetime: | |
| return datetime.datetime.now(datetime.timezone.utc) | |
| def current_ms() -> int: | |
| delta = current_datetime() - NTP_EPOCH | |
| return int(delta.total_seconds() * 1000) | |
| def current_ntp_time() -> int: | |
| return datetime_to_ntp(current_datetime()) | |
| def datetime_from_ntp(ntp: int) -> datetime.datetime: | |
| seconds = ntp >> 32 | |
| microseconds = ((ntp & 0xFFFFFFFF) * 1000000) / (1 << 32) | |
| return NTP_EPOCH + datetime.timedelta(seconds=seconds, microseconds=microseconds) | |
| def datetime_to_ntp(dt: datetime.datetime) -> int: | |
| delta = dt - NTP_EPOCH | |
| high = int(delta.total_seconds()) | |
| low = round((delta.microseconds * (1 << 32)) // 1000000) | |
| return (high << 32) | low | |