GPS for Flipper Zero

A simple Flipper Zero application for NMEA 0183 serial GPS modules, such as the
Adafruit Ultimate GPS Breakout.

Heavy lifting (NMEA parsing) provided by minmea, which is included in this
repository.

Hardware Setup

Connect the GPS module to power and the USART using GPIO pins 9 (3.3V), 11
(GND), 13 (TX), and 14 (RX), as appropriate.

See the tutorial video from
Lab401 by RocketGod for a visual guide to
the hardware setup.

Confirmed Compatible Modules

• Adafruit Ultimate GPS Breakout
• Beitian BN-180
• u-blox NEO-6M

If you have verified this application working with a module not listed here,
please submit a PR adding it to the list.

Building the FAP

1. Clone the flipperzero-firmware repository.
2. Create a symbolic link in applications_user named gps, pointing to this
   repository.
3. Compile with ./fbt fap_gps.
4. Copy build/f7-firmware-D/.extapps/gps.fap to apps/Tools on the SD card
   (directly or using qFlipper).

Contributing

This project was a learning exercise and is more or less "complete" from my
perspective, but I will happily accept pull requests that improve and enhance
the functionality for others.

Currently, the app only parses RMC and GGA sentences, and displays a subset of
the data that fits on the screen. The UART is also hard-coded to 9600 baud.
These limitations are largely driven by the GPS module I have to work with. A
more elaborate UI with scrolling or multiple screens, as well as a configurable
baud rate, may be useful for other GPS modules.