GPS message API wrapper library for I2C Arduino connection
A GPS receiver talks and listens in NMEA sentences. This compact library provides a simplified programming interface to accept NMEA commands, and pass them via TWI (I2C) bus to a GPS receiver, and to collect NMEA report massages from the GPS receiver, to provide basic checksum validation, and to forward them via the TWI bus to the user application at a rate that the user application can regulate. It makes use of the Arduino Wire library, but is not implemented as a class derived from the Arduino Stream class. NMEA sentences are of the form . Messages are validated at the level of the matching the reported , but no further validation or parsing is provided.

Author: Greg Walker

Maintainer: Greg Walker

Read the documentation


This library is compatible with the avr architecture so you should be able to use it on the following Arduino boards:

Compatibility Note

Note: while the library is supposed to compile correctly on these architectures, it might require specific hardware features that may be available only on some boards.


To use this library, open the Library Manager in the Arduino IDE and install it from there.