How to query RTK Status?

[whatuptkhere]

Hi!

Long time lover of this library, first time caller.

I'm wondering if there's a method to query RTK/fix status using NeoGPS? I'm using NavSpark GPS modules with an RTK setup. I believe the fix status (ie. 3D fix, RTK Float, RTK Fix) is reported in the GGA messages, as below:

$GPGGA,115739.00,4158.8441367,N,09147.4416929,W,4,13,0.9,255.747,M,-32.00,M,01,0000*6E

W = East or West Hemisphere. This is always either ‘E’ or ‘W’. When converting to decimal degrees, the western hemisphere is a negative number.

4 = Fix type. This is always a single number. Reportable solutions include:
    0 = Invalid, no position available.
    1 = Autonomous GPS fix, no correction data used.
    2 = DGPS fix, using a local DGPS base station or correction service such as WAAS or EGNOS.
    3 = PPS fix, I’ve never seen this used.
    4 = RTK fix, high accuracy Real Time Kinematic.
    5 = RTK Float, better than DGPS, but not quite RTK.
    6 = Estimated fix (dead reckoning).
    7 = Manual input mode.
    8 = Simulation mode.
    9 = WAAS fix (not NMEA standard, but NovAtel receivers report this instead of a 2).

[dizcza]

Hi @whatuptkhere did you manage to parse RTK messages and apply corrections to achieve a sub-meter accuracy? This library isn't maintained, unfortunately, and I'm looking for a GPS lib to handle RTK updates. I'm considering either NavSpark or SIM66MD.