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betaflight/docs/Gps.md
Dominic Clifton fabd376f41 Allow GPS SBAS mode to be configurable. 
It was noticed that GPS startup time increased when the change was made
from using EGNOS by default to using AUTO by default.

The default is still AUTO but faster GPS startup times may be achieved
by telling the GPS receiver what region you are in.

This also removes more unfinished MTK gps provider support.
2014-06-03 13:38:41 +01:00

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GPS

Two GPS protocols are supported. NMEA text and UBLOX Binary.

GPS Provider

Set the gps_provider appropriately.

Value Meaning
0 NMEA
1 UBLOX

SBAS

When using a UBLOX GPS the SBAS mode can be configured using gps_sbas_mode.

The default is AUTO.

Value Meaning Region
0 AUTO Global
1 EGNOS Europe
2 WAAS North America
3 MSAS Asia
4 GAGAN India

If you use a regional specific setting you may achieve a faster GPS lock than using AUTO.