AUX Pin as GPS 1PPS

Hardware
1

I have no idea if this is possible but I have a requirement to sync my host MCU timer to GPS time. If I was using an external GPS I would get the rough time via the serial port, then accurately sync with the one pulse per second (1PPS) signal which is present on many GPS modules. I can use the notecard timestamp (network time instead of GPS time, but that is fine).

So my question would be, does the GPS module in the notecard have a 1PPS signal? And is it possible to route this to one of the AUX pins in a future release?

I only need to do this occasionally and I’m trying not to add the cost of another module, when GPS is already built in to the notecard.

Thanks

1 Like
2

Hi @spring,

Notecard doesn’t expose a 1PPS signal from its GPS module. However, as mentioned, you can retrieve network-synced timestamps using the card.time request.

If this type of precision is essential for your application, you’ll likely need an external GPS module with a dedicated 1PPS output!

Thanks,
Rob

3

Thanks for the reply. I guessed as much, but thought it was worth asking.