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.TH "GARMINCTL" 1 "" "" ""
.SH NAME
garminctl \- Control the modes of a Garmin GPS
.SH "SYNOPSIS"
.ad l
.hy 0
.HP 10
\fBgarminctl\fR [\-?] [\-h] [\-n] [\-b] [\-D\ \fIdebuglevel\fR] [\-V] \fIserial\-port\fR
.ad
.hy

.SH "DESCRIPTION"

.PP
garminctl switch a serial Garmin GPS to NMEA or Garmin Binary mode\&. On exit it leaves the serial port set to the proper baud rate\&.

.PP
This program is not for use with Garmin USB devices\&. Those are permanently set to Garmin Binary mode\&.

.PP
You will probably need to be root to run this program, as the serial device it uses is normally privileged\&.

.PP
The program accepts the following options:

.TP
\-?
Display program usage and exit\&.

.TP
\-b
Force GPS into binary mode\&. After the GPS resets itself autobaud to the new speed\&. Binary mode is always 9600 8N1\&.

.TP
\-n
Force GPS into NMEA mode\&. After the GPS resets itself autobaud to the new speed\&.

.TP
\-h
Display program usage and exit\&.

.TP
\-D
Set debug level\&.

.TP
\-V
Display program version and exit\&.

.SH "BUGS AND LIMITATIONS"

.PP
The logic for hunting the GPS's baud rate is vulnerable to various sorts of RS232 flakiness\&. If it hangs for longer than a few seconds, kill the program and restart\&.

.SH "SEE ALSO"

.PP
 \fBgpsd\fR(8), \fBgps\fR(1), \fBlibgps\fR(3), \fBlibgpsd\fR(3), \fBgpsprof\fR(1), \fBgpsfake\fR(1), \fBgnuplot\fR(1)\&.

.SH "AUTHOR"

.PP
Gary E\&. Miller <gem@rellim\&.com>\&. This code is part of the gpsd toolset; there is a project page for gpsd  here: \fIhttp://gpsd.berlios.de/\fR\&.