Lightweight GPS NMEA parser

LwGPS is a lightweight, platform independent, all-constellation GNSS NMEA parser library for embedded systems.

Features

Written in C (C11), compatible with stdint.h data types
Platform independent, easy to use
Built-in support for all-constellation GNSS statements
- GPGGA, G*GGA or GNGGA: GNSS fix data
- GPGSA, G*GSA or GNGSA: Active satellites and dilution of precision
- GPGSV, G*GSV or GNGSV: List of satellites in view zone
- GPRMC, G*RMC or GNRMC: Recommended minimum specific GNSS/Transit data
Optional support for PUBX (uBlox proprietary) statements, including PUBX_TIME
Optional detailed per-satellite info (elevation, azimuth, SNR) for GSV statement
Optional NMEA checksum validation
Distance and bearing calculation between two coordi 6823 nates
Speed conversion helper between many units: metric, imperial and pace
Optional per-statement processing callback
C++ wrapper class available
Optional float or double floating point units
Low-level layer is separated from application layer, thus allowing you to add custom communication with GPS device
Works with operating systems
Works with different communication interfaces
Can be used as an ESP-IDF component
User friendly MIT license

Fresh contributions are always welcome. Simple instructions to proceed:

Alternatively you may:

To build the code and run basic tests on your host::

    cd examples
    make test