GxPS is a set of programs for the HP 48G series calculators for exchanging
various data with Garmin GPS receivers.
GxPS performs the following functions:
GxPS provides a versatile facility for getting NMEA data packets,
individual sentences, and specific parts of sentences, and is intended for
use in applications such as track loggers, flight computers and such.
Upload/download waypoints. On the HP, the waypoints are
presented in an easily viewable/editable format. Icons are supported
to some degree (numbers, but not graphics). Look
here for a comprehensive list of
Upload/download routes. Supported models
Upload/download track logs in viewable or compact formats.
Query GPS for current position, altitude, speed, time/date, or version information.
Sync the HP's clock with the GPS's.
Turn GPS off.
- Works with Garmin and NMEA-0183 protocols.
Also, GxPS contains a fairly comprehensive implementation of the Garmin
basic link protocol with send/receive commands that handle ACK/NAK, DLE
stuffing, checksum, and retry.
What you need
If you have any suggestions or bug reports, please send them to me.