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In lugnet.robotics.rcx.legos, Bapt Denaeyer wrote:
> Katie Panciera wrote:
>
> > Hello,
> > I am currently in the middle of a research project using Mindstorms robots. We
> > are using brickOS and are working on algorithsm for dispersion. One thing that
> > would be handy to do, however, is be able to record the path the robot takes and
> > then send it to our computers so that we can analyze it. We are recording the
> > path in an array in the rcx, but are having problems with lnp.
> > I was trying initially to compile several sample programs from
> > www.cs.brown.edu/courses/cs148/2003/samples.html and
> > http://nanobapt.homelinux.com/mindstorms/lnppc.php but am having trouble.
> > Eventually I figured out that part of my problem is that I didn't have liblnp.h,
> > but I found that somewhere and downloaded it. I am still coming up with some
> > problems though. When I compile the program from nanobapt's page it calls one of
> > the brown programs or says that printf is an implicit declaration. When I
> > include stdio.h, I get more messages. Basically what happens is that I had to
> > include a bunch of new header files that I copied from codewarrior such as
> > ansi_parms, wchar_t, mslGlobal, etc and now there are small errors in wchar_t
> > and mslGlobal that prevent my code from compiling.
> > I hope that someone will be able to help me. I am unsure of how well I explained
> > the problem or what important details I may have left out. I will give you more
> > information if necessary. I am using cygwin if that makes a difference.
> > Thanks,
> > Katie
> >
> >
> >
> Hello katie,
>
> Have you read on my page How to comile it ? :)
>
> liblnp.h call function from the lib. You not only need to include this
> file ! you need the library !
>
> Download it here : http://legos.sourceforge.net/files/linux/LNPD/
> You need to run lnpd before run your program
>
> Oh I just see that you run under cygwin ! That make a BIG difference !!
> LNPD is designed for linux.
>
> So you can eventually download the legnoppix project that allow you to
> program RCX under linux without installation.
>
> http://nanobapt.homelinux.com/knx/ <- download it here
>
> nanobapt
Katie,
I am also doing a project which envolves getting information from the RCX using
the BrickOS and Cygwin. I tried the same approach with using the Linux files
but, I found another way to get information. If your familiar with Java you can
use the a package from Lejos. Since lnp was standardized it can be used with
running java or C/C++ on either side (RCX or PC). So what i'm doing is running C
on the RCX and recieving information with a simple java program. The package is
called josx.rcxcomm the API is located here
http://lejos.sourceforge.net/apidocs/index.html
The easiest way to use the package is to install Lejos, but you could just
download the windows version and extract the following files:
pcrcxcomm.jar,rcxrcxcomm.jar, irtower.dll
the jar files can be found here:
http://homepage.ntlworld.com/lawrie.griffiths/pcrcxcomm.html
and then change your path to point to them that's all you really need.
There is good documentation and examples that come with Lejos that can help you
get started. Good Luck
Chaz
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Message has 2 Replies:
 | | Re: Help with lnp
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| (...) I may try this. It looks like the problem is that the files are in the wrong place. I am going to try to fix this problem, but I may use your idea. You have tried it and it works? I am not that familiar with Java, but may be able to figure out (...) (21 years ago, 1-Jul-03, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: Help with lnp
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| (...) Hello katie, Have you read on my page How to comile it ? :) liblnp.h call function from the lib. You not only need to include this file ! you need the library ! Download it here : (URL) need to run lnpd before run your program Oh I just see (...) (21 years ago, 30-Jun-03, to lugnet.robotics.rcx.legos)
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