GPS

The GPS tab configures GPS module settings and shows live GPS status (fix type, satellite count, position, a live map).

When GPS is active

There is no GPS feature switch. GPS runs when the Protocol below matches a port on the Configuration tab:

Protocol	Port needed
NMEA or UBLOX	a port set to GPS
FBUS	a port set to Bus: F.BUS Master or Bus: S.PORT Master
CRSF	a port set to Bus: CRSF Sensors
MSP	none

This tab appears as soon as any of those ports is set up, so you can pick the matching protocol here. The GPS Navigation tab, GPS modes and GPS telemetry only appear once the protocol and port match. Changes take effect after the save and reboot.

Firmware before MSP API 22.15 still has a GPS feature bit. The Configurator sets it for you to match the protocol and port when you save.

Module setup

Protocol selects how the GPS module talks to the flight controller: NMEA or UBLOX over a serial port, MSP (a companion device relaying GPS over MSP), FBUS (GPS position piggybacked on an FrSky FBUS link), or CRSF (GPS position from a CRSF Sensors accessory) -- for the latter two, the satellite signal-strength panel and baud/config options below don't apply, since both carry an already-processed fix rather than raw module output.

For NMEA/UBLOX modules, Auto Baud and Auto Config let the Configurator detect the module's baud rate and push its own configuration automatically -- leave both on unless you have a reason to manage the module yourself. U-blox modules specifically also expose a Ground Assistance Type (SBAS region -- EGNOS/WAAS/MSAS/GAGAN/auto/none) and a Galileo toggle (swaps the QZSS constellation for Galileo, since a module only tracks so many constellations at once).

Home Point Once controls when the home point is captured: off (the default) resets it on every arm, so the point always matches your most recent takeoff; on captures it only on the very first arm after power-up, useful if you deliberately arm/disarm on the bench before walking to your actual takeoff spot.

Wiring and configuring a u-blox or NMEA module by hand is covered in GPS Hardware and Module Setup. The fixed-wing navigation modes that use the GPS are in GPS RTH and Loiter.

Diagnostics

With a serial GPS (NMEA or UBLOX) and firmware that supports it, a Diagnostics panel under Status shows the GPS port and its pins, whether it opened and at what baud rate, the GPS state, and the byte, packet, error and timeout counters. A badge in its header gives the state at a glance (for example Receiving, No data or Bad data). When something is wrong, a line says what to do: no port set to GPS, nothing received (wiring or power), or data arriving but no valid messages (baud rate or protocol). In Expert Mode the panel also shows the last bytes received from the module. For the raw data and a baud rate scan, use the CLI command serialdebug; see GPS troubleshooting.