[gpsd-users] gpsd mode "update not seen yet" when using 1PPS

[Yakov Shmulevich]

Hi,

I am working with GPS module through FT2232H with 1PPS on DCD pin.

I am getting GPS data via shared memory export supported by libgps and try to get GPS data every ~1.5 sec.

But sometimes I get "update not seen yet" in gpsdata.fix.mode.

If I disconnect the DCD pin (connect it to 3.3V) from 1PPS, the problem disappear.

What may be a reason for such behavior?

Can it be corresponding to 1PPS polarity positive or negative (I use positive)?

Thanks,

Yakov