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Re: Small problem with NMEA feed - satellites_used

From: Nick Taylor
Subject: Re: Small problem with NMEA feed - satellites_used
Date: Fri, 9 Dec 2022 10:35:48 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0

Yo Gary
gps_data->satellites_visible is useless.  No two vendors compute it the
same way, and tells you more about the state of the local ephemeris than
the quality of the sky view.  It is the wrong thing for what you say you

Sorry for confusion - my guy Orzo was battling to get any data at all and switching between sats avail and sats used hence how he got mixed up...

Basically we are after reporting sats used but using var in gpslib it's not there using this partial NMEA feed.

Orzo is suggesting the attached patch but he's not 100% happy with it...

Maybe an option would be to add new variable like gga_sats_used and then application code could choose to use this if normal sats used=0

Please cast your expert eye

Thanks and regards


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