GPS Module (NMEA)

Overview

Mimic emulates a standard GPS receiver by streaming NMEA 0183 sentences over a UART interface. This allows you to test GPS parsing libraries and navigation software using simulated or pre-recorded trajectories.

Supported Sentences

The emulation module can generate the following standard NMEA messages:

$GPRMC: Recommended Minimum Specific GNSS Data.
$GPGGA: Global Positioning System Fix Data.
$GPGSV: GNSS Satellites in View.
$GPGLL: Geographic Position - Latitude/Longitude.

Trajectory Simulation

You can provide a CSV file containing a list of coordinates, and Mimic will "travel" along that path, updating the NMEA stream in real-time to match the simulated movement.

Usage

Start the GPS emulation on the default UART pins (PA9/PA10):

mimic simulate gps --trajectory my_trajectory.csv