SYNOPOSISgpstrans [ 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).
- set serial I/O device
- set datum, format, offset, and device interactively, and save them in $HOME/.gpstrans.
- identify connected GPS
- turn off GPS device
- get time from GPS
- get time from GPS and set system time on host
- download data indicated by x: r=route, t=track, w=waypoint, a=almanac
- 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.
- upload data indicated by x: r=route, t=track, w=waypoint, a=almanac
- print program version.
- Increase verbosity.
- Add debug printouts.
- Print help text.
CONNECTIONFor 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 / \ 4 | | | | o o | | | |_____ | < <- groove -> |=====| |----,| | o o | | | | || 2 \ _____ / 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(-) |_____| | ||
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)
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.
- Serial I/O device (overrides contents of $HOME/.gpstrans, and is overridden by -p switch).
- Has user preferences for datum, format, offset, and serial I/O device (see -s switch, above).