Re: Ignore nmea checksum - possible?

[Andreas B]

Gary,

Message received; calculate checksums.

Thanks.

Andreas

On Wed, Jul 12, 2023 at 8:10 PM Gary E. Miller <gem@rellim.com> wrote:
>
> Yo Andreas!
>
> On Wed, 12 Jul 2023 15:57:13 +0200
> Andreas B <panden@gmail.com> wrote:
>
> > Question:
> > Is there a way to make gpsd ignore the nmea checksum?
>
> Nope.  And for very good reasons.  Serial lines have a lot of errors.
>
> > Case:
> > I've been playing with generated nmea sentences, and changing the
> > coordinates, without calculating a (new valid) checksum.
>
> Don't do that.  Calculating checksums is easy.
>
> > When using gpsfake, gpsd seems to refuse to output the nmea sentence
> > when the checksum is invalid.
>
> Yup, and for very good reasons.
>
> > Here's what I tried:
> [...]
> > * Run gpsfake:
>
> Save yourself a lot of unneeded complexity, just use gpsdecode.
>
> > For testing purposes, it would be nice to be able to pass through nmea
> > sentences, even if the checksum is invalid.
>
> Not nice.  Just fix your checksums.
>
> RGDS
> GARY
> ---------------------------------------------------------------------------
> Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
>         gem@rellim.com  Tel:+1 541 382 8588
>
>             Veritas liberabit vos. -- Quid est veritas?
>     "If you can't measure it, you can't improve it." - Lord Kelvin