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Francesco Virlinzi
ST Employee

Hi all

Have a look @

https://www.st.com/resource/en/application_presentation/teseo-3-quick-testing-guide.pdf

it's an easy way to test the connection to the Teseo III server based Assisted GNSS without special equipment and/or tool.

41 REPLIES 41

Thanks much for the information. A more specific question.

When I do a "$PSTMCOLD", I know it clears the RT Ephemeris data. But does "$PSTMCOLD" clear any of the data used for P-AGNSS?

If P-AGNSS is active (ST-AGPS right?), and I do a cold start, how does this affect time to first fix? I mean I've cleared the RT ephemeris data with a cold start but if the P-AGNSS data is still active then it will speed up the time to first fix, even without and RT data?

Does the gps attempt to use both ways if they are active?

Ciao

> But does "$PSTMCOLD" clear any of the data used for P-AGNSS?

No it doesn't.

The ST/P -AGNSS can be cleared using the command: $PSTMSTAGPSINVALIDATE.

> f the P-AGNSS data is still active then it will speed up the time to first fix

Yes because P-AGNSS data are still there.

> Does the gps attempt to use both ways if they are active?

Yes. it does... also if until RT-Data are not expired (~4h) they are the real ephemeris used in the PVT solution.

Ciao

Francesco