Here are the data structures with brief descriptions:

Ncallbackmanager
CCallback
Nnmea
Cnmea
Cnmea_result
Cgll
Cgga
Cgsa
Cgsv_sat
Cgsv
Crmc
Nteseo
Cnmea_rr	Struct holds combinations of NMEA commands and their reply signature validation string
Cteseo	Driver class for ST Teseo IC