Does Release 43 GNSS support introduce higher resolution UTC source?

Device Code
1

I note that the GNSS support in Release 43 includes an extra digit for tenths of seconds. Is this workable as a better UTC time source than the present scheme of 1 sec resolution for time() on the device?

2

I confess I haven’t tried it, but the documentation gnss-session.readposition() | Dev Center suggests that you get hhmmss.sss – that is, milliseconds.

This is likely to be a far better measure of UTC than time() from the onboard RTC; GPS time in general is accurate to tens of nanoseconds absolute difference from UTC, so the millisecond precision reported is not spurious.

Peter

3

Ahem, having seen some real output now, the documentation says you get milliseconds but in fact you might indeed just get deciseconds. Still way better than time() though.

Peter

4

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