How do I discern Maidenhead Locator from GPS lat long info.

[richard]

first off , what has your post got to do with maidenhead ? why not start a new relevant post instead of confusing this one

secondly posting figures as pictures makes life difficult for anyone inclined to assist


in you google numbers query (which is really deg ,min, sec conversion to decimal degrees )

how did you get 38 + 2/60 + 3.49/3600 = 38.034297

my calculator says 38.0343027 ps (in 32 bit float result is 38.0343018, with 64 bit float 38.0343028)done on pic24f using xc16

you will have fun trying to get math accurate to 10 significant digits on that chip [even 32 bit floats struggle]
your best bet is nbit math

the decimal portion can be :-
mins *1000000/6 + sec *1000/36

parsing the nmea sentences is well covered but you may be interested in this

http://support.melabs.com/forum/picb...strtok-usercmd

a strtok function for pbp

parsing strings with spaghetti code will always by a shortcut to madness