lnpd - a LinuX Interface to the BrickOS Networking Protocol

lnpd [-emseconds] [-f] [-l] [-mnumber] [-n] [-pport] [-r] [-ttty_device] [-vlevel]

lnpd is a LinuX daemon that allows multiple clients to connect to a LEGO RCX running Markus L. Noga's famous BrickOS (formerly legOS) operating system and exchange messages using the LNP protocol.

A summary of options understood by lnpd

-d

Don't go into background

-e|--extrawait={mseconds}

Extra wait time for lnp

-f|--fast

Run LNP at 4800 baud

-l|--log[=filename]

Enable logging to syslog or file

NOTE: filename of '-' means to log to stdout.

-m|--maxclients={number}

Set max number of lnpd clients (default 16).

-n|--nolock

Do not manage tty lockfiles.

-p|--port={TCP_Port}

Daemon should listen on port {TCP_Port}. Default is port 7776.

-r|--realtime

Run daemon in realtime mode.

-t|--tty={tty_device}

Use {tty_device}. Defaults to /dev/ttyS0.

-v|--verbosity={level}

Enable enhanced logging. Valid levels are: d, l, i, a, and c.

-h

Show similar help text at command-line.

-u

Show short usage message.

-V|--version

Display lnpd version

Mandatory or option arguments to long options are also mandatory or optional for any corresponding short options.

/dev/ttyS0

The default device for lnpd. (Also See -t: in OPTIONS, above).

/usr/share/doc/lnpd/examples/lnptest.c

sample BrickOS code to be built and downloaded to your RCX. This code allows you to quickly ascertain that the lnpd daemon is working with your RCX and lnpd installation.

/bin/lnptest

a simple test program which uses lnpd to communicate with the lnptest program downloaded into your RCX for testing with this program.

You'll find additional documentation in /usr/share/doc/lnpd (on Debian GNU/Linux systems)

lnpd was written by Martin Cornelius <Martin.Cornelius@t-online.de> This man page was written by Stephen Moraco <stephmo@users.sourceforge.net>