GNSS - When is Time Valid? - Enhance NavData.posFixMode?

[m Lewis]

Typically GNSS provide accurate Date/Time well before 3D Position Fix is achieved. Is there a simple API (Arduino) to determine whether Date/Time is valid? If not, how about adding a value to the enumeration SpFixMode for TimeIsValid that can be retrieved from NavData.posFixMode. Then a RealTimeClock could be set much earlier.

[KamilTomaszewski]

@m-Lewis The easiest way to check that the date and time are valid is:

/* Check update. */
if (Gnss.waitUpdate(-1))
{
  /* Get NaviData. */
  SpNavData NavData;
  Gnss.getNavData(&NavData);

  /* Check date and time. */
  if (NavData.time.year > 1980)
  {
    /* Date and time are valid */
}

Best Regards,
Kamil Tomaszewski

[m Lewis]

Great, thank you!