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Subject: 
Re: leJOS & LDCC IRP
Newsgroups: 
lugnet.robotics.rcx.java, lugnet.trains
Date: 
Fri, 12 Sep 2003 17:02:08 GMT
Viewed: 
828 times
  
Juergen Stuber wrote:
> Hi,
> 
> "Brian B. Alano" <throwaway@insightbb.com> writes:
> 
> > Brian B. Alano wrote:
> > I'm writing a leJOS package to support the LDCC IR Protocol.
> 
> 
> I'm having a bit of difficulty to understand what you are trying to do,
> as I know Lejos but not the DCC/train side of things.
> In particular, on which side do you want to use Lejos, sending those
> remote commands from an RCX or from a PC?
Receiving IR commands from a Lego Remote, IR Tower or possibly another RCX.
They're not DCC signals, but LDCC IRP messages. Roughly the same data, different
medium and different protocol.
> 
> As far as I can understand from the web page
> (http://home.surewest.net/markril/lego/dcc/index.html),
> LDCC just takes input from the LEGO Mindstorms remote control?
> 
> However, this is inconsistent to what I found in ldcc105.zip,
> the NQC program.
LDCC IRP is still unstable, but it will support input from the three sources I
mentioned above.

> It seems this program sends packets that are inconsistent with
> the format the ROM understands, in particular the packet length
> which is normally encoded in the lower 3 bit.  Apparently the
> RCX2 firmware extends the ROM in this regard, so it is no wonder
> that the Serial class in Lejos cannot receive them, as it uses
> the ROM directly.
You've probably hit on the problem here. I'll look into it.

> 
> Maybe you can try the rcxcomm package, which as far as I understand
> can send arbitrary byte streams. • I thought rcxcomm was for the PC side only. I'll have to take another look at it.
> 
> 
> Good luck
Thanks!
-Brian



Message is in Reply To:
  Re: leJOS & LDCC IRP
 
Hi, (...) I'm having a bit of difficulty to understand what you are trying to do, as I know Lejos but not the DCC/train side of things. In particular, on which side do you want to use Lejos, sending those remote commands from an RCX or from a PC? (...) (23 years ago, 12-Sep-03, to lugnet.robotics.rcx.java, lugnet.trains)

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