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Re: [gpsd-users] pps of ublox, how to enable and what params to set?

From: Askar Ibragimov
Subject: Re: [gpsd-users] pps of ublox, how to enable and what params to set?
Date: Tue, 21 Jul 2015 20:50:12 +0300


the device is EVK-6T-0  U-blox 6 eval kit Precision Timing. Also, I tested same device and it used to work. Just we purchased our own and I do not see the PPS. I trust the gpsd itself developed on this same hardware or very similar. 

PPS in the device can be configured in diffrerent ways.  I have this:

Встроенное изображение 1

and this  as setup

Встроенное изображение 2

Cheers, Askar

2015-07-21 20:38 GMT+03:00 Gary E. Miller <address@hidden>:
Yo Askar!

On Tue, 21 Jul 2015 09:45:25 +0300
Askar Ibragimov <address@hidden> wrote:

> I had one unit of U-Blox 6 and it was working ok with gpsd. Currently
> I bought another one and it seems that I am not getting the PPS
> signal. With older one it used to work.

Most GPS vendors do not connect the PPS pin.  If you give us
your GPS model number I can check the online specs.  Not much we can
help you with unless we have the model number.

Less likely, but still common, is that you new GPS is outputting
TTL levels instead of RS-232 levels and your serial input is glitching.

> Is there any way I can say to it that it should emit PPS?

Reset the GPS to factory defaults and be sure the GPS has a 3D fix.

> Also, what
> parameters of PPS gpsd needs?

Factory defaults are fine.

> Can GPSD utility programs help to
> configure u-blox, or I should do it separately with ublox windows
> program?

Whatever is the easiest for you to get to factory defaults.  I would just
use minicom.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1(541)382-8588

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