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| author | Eric S. Raymond <esr@thyrsus.com> | 2006-11-13 04:54:22 +0000 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2006-11-13 04:54:22 +0000 |
| commit | ccece899a712422cbee12d998244976458bb37bf (patch) | |
| tree | ef6def7cfb5131c925cccf994e9f75af9e9efa16 /gpsctl.xml | |
| parent | fb82fe0952cf2016f1a646e55f680449a5fb56ff (diff) | |
| download | gpsd-ccece899a712422cbee12d998244976458bb37bf.tar.gz | |
Type-forcing option now works in gpsctl and is documented.
I have successfully used it to switch a SiRFStar I into binary mode.
Diffstat (limited to 'gpsctl.xml')
| -rw-r--r-- | gpsctl.xml | 33 |
1 files changed, 33 insertions, 0 deletions
@@ -22,7 +22,9 @@ <arg choice='plain'>-n</arg> </group> <arg choice='opt'>-f </arg> + <arg choice='opt'>-l </arg> <arg choice='opt'>-s <replaceable>speed</replaceable></arg> + <arg choice='opt'>-t <replaceable>speed</replaceable></arg> <arg choice='opt'>-D <replaceable>debuglevel</replaceable></arg> <arg choice='opt'>-V </arg> <arg choice='opt'><replaceable>serial-port</replaceable></arg> @@ -71,6 +73,13 @@ its new speed.</para> </varlistentry> <varlistentry> +<term>-l</term> +<listitem> +<para>List the known device types and exit..</para> +</listitem> +</varlistentry> + +<varlistentry> <term>-s</term> <listitem> <para>Set the baud rate at which the GPS emits packets.</para> @@ -78,6 +87,13 @@ its new speed.</para> </varlistentry> <varlistentry> +<term>-t</term> +<listitem> +<para>Force the device type.</para> +</listitem> +</varlistentry> + +<varlistentry> <term>-h</term> <listitem> <para>Display program usage and exit.</para> @@ -99,6 +115,23 @@ its new speed.</para> </varlistentry> </variablelist> +<para>The argument of the forcing option. <option>-t</option>, should be a +string which should be contained in exactly one of the known driver +names; for a list, do <command>gpsctl -l</command>.</para> + +<para>Forcing the device type behaves somewhat differently depending +on whether this tool, is going through the daemon or not. In high-level +mode, if the device that daemon selects for you doesn't match the +driver you specified, <application>gpsctl</application> exits with +a warning. (This may be useful in scripts.)</para> + +<para>In low-level mode, if the device identifies as a Generic NMEA, +use the selected driver instead. This will be useful if you have a +GPS device of known type that is in NMEA mode and not responding to +probes. (This option was originally implemented for talking to +SiRFStar I chips, which don't respond to the normal SiRF ID +probe.)</para> + <para>If no options are given, the program will display a message identifying the GPS type of the selected device and exit.</para> |