Communicate with garmin gps receiver
gpstrans [ options ] [ file ]
gpstrans allows the user with a Garmin GPS receiver to upload and download waypoints, routes, almanacs (satellite orbital elements) and trackroutes. If file is not supplied, data will be read from stdin (-ux switch) or written to stdout (-dx switch).
-pport
set serial I/O device
-s
set datum, format, offset, and device interactively, and save them in $HOME/.gpstrans.
-i
identify connected GPS
-o
turn off GPS device
-t
get time from GPS
-ts
get time from GPS and set system time on host
-dx
download data indicated by x: r=route, t=track, w=waypoint, a=almanac
-m
With -dt, downloads track data in the format which can be displayed by Mayko mXmap(1). With -dr or -ur, downloads or uploads route data in a format compatible with Mayko mXmap.
-ux
upload data indicated by x: r=route, t=track, w=waypoint, a=almanac
-v
print program version.
--verbose
Increase verbosity.
--debug
Add debug printouts.
--help
Print help text.
For a DB-25 connector, you may need to connect pin 4, 5 and 6, 8, 20 together. This sets handshake signals so that your workstation can use the serial port to communicate with the GPS.
1 ### #####
o o o # # # o # o o o o o
o o o o o o # o o o o o
Connect the Garmin cable as follows:
2 3 7
o o o o o o o o o o o o o
o o o o o o o o o o o o
Pin 2 goes to DATA IN (White)
Pin 3 goes to DATA OUT (Brown)
Pin 7 goes to GROUND (Black)
If it doesn't work in this way, try exchanging pins 2 and 3 at the connector.
The circular connector on a Garmin GPS II receiver can be wired to a DB-9 connector as follows:
_____ _____,-----,
3 / nbsp; 4 | | |
| o o | | | |_____
| < <- groove -> |=====| |----,|
| o o | | | | ||
2 nbsp;_____ / 1 |_____| | ||
`-----' ||
||
views are looking ||
into connector ||
at each end of cable ||
||
||
5 3 2 ________ ||
o o o o o | \___________||
o o o o |_________,------------'
DB-9 pin 2 goes to circular connector pin 2
DB-9 pin 3 goes to circular connector pin 4
DB-9 pin 5 goes to circular connector pin 3
other pins are not connected
(Note: the pin numbers for the circular connector are
arbitrary, and may not match the `official' numbers.)
If your plug is more recent than the one above (ex: etrex) then you need DB-9 or DB-25 to be connected to your Garmin GPS like this:
_____,-----,
POWER(+) | | |
groove --> |=====| |_____
DATA IN | | |----,|
DATA OUT | | | ||
GROUND(-) |_____| | ||
`-----' ||
||
||
||
||
||
||
________ ||
| \___________||
|_________,------------'
DB-25 :
2 3 7
o o o o o o o o o o o o o
o o o o o o o o o o o o
Pin 2 goes to DATA IN (White) Pin 3 goes to DATA OUT (Brown) Pin 7 goes to GROUND (Black)
DB-9:
5 3 2
o o o o o
o o o o
pin 2 goes to DATA IN (White)
pin 3 goes to DATA OUT (Brown)
pin 5 goes to GROUND (Black)
other pins are not connected
For testing, you might try setting the GPS to NMEA-Output and using a terminal emulator program like Kermit. The GPS will send a data record every 2 seconds. As long as you don't see any data on your computer, gpstrans won't work.
After finishing the test, be sure to set your GPS receiver to GRMN/GRMN.
GPSDEV
Serial I/O device (overrides contents of $HOME/.gpstrans, and is overridden by -p switch).
$HOME/.gpstrans
Has user preferences for datum, format, offset, and serial I/O device (see -s switch, above).
GPStrans is Copyright 1995 by Carsten Tschach <[email protected]>. The datum translation routines are based on the program MacGPS from John F. Waers <[email protected]>. Mayko mXmap output format by Matthias Kattanek <[email protected]>. German Grid by Andreas Lange <[email protected]>. etrex support by Joao Seabra CT2GNL - <[email protected]>. Other Garmin formats added by Jim Van Zandt <[email protected]>.
mxmap(1), GPSMan