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 Robotics / RCX / legOS / 844
843  |  845
Subject: 
Re: patch for lnpd ( Collision problem in far-mode )
Newsgroups: 
lugnet.robotics.rcx.legos
Date: 
Thu, 17 Feb 2000 10:55:58 GMT
Viewed: 
7136 times
  
Thanks for you help Martin. I tried the uart stuff with no change except for
this:

From further testing I realised that the data that the IR Tower is sending is
been recieved by the RCX (woohoo) even though a collision is reported for
every sent packet. However, the IR Tower does not recieve anything from the
RCX even when I slow or stop the packets being sent.

Any ideas ?

In lugnet.robotics.rcx.legos, Martin Cornelius writes:
> Michael Marklew wrote:
> > 
> > I applied the patch manually (ok. I admit it was fairly obvious where the
> > changes had to be made)
> > 
> > Maby I made a mistake applying the patch or something as I still get
> > Collission errors. I tried two IR towers in both near and far mode, still • the
> > same problem.
> 
> Someway it looks like there is another problem with your setup, in near
> mode i have never seen the collision problem. Perhaps your encountering
> the problem reported by Toni: Obviuosly his uart does not work in 16450
> mode, but does work in 16550A mode. You can test that by setting the
> uart manually with setserial and run lnpd without root permissions.
> 
> > abacus:~/lego/lnpd+liblnp/lnpd$ patch transceiver.c < patch-trans
> > patching file `transceiver.c'
> > patch: **** malformed patch at line 5: static unsigned char* tx_next;
> > 
> > However, I am fairly sure I applied the patch manually ok.
> > 
> > Should I still get this error?
> 
> definitely not. I'll send you the complete file as attachment as soon as
> i come home,
> 
> so long, Martin



Message has 1 Reply:
  Re: patch for lnpd ( Collision problem in far-mode )
 
(...) Michael, have you rebuilt lnpd with the transceiver.c i sent you ? The collision problem should completely go away then. I could also send you a statically linked version of my latest version of lnpd, just to check it isn't a compiler problem. (...) (27 years ago, 17-Feb-00, to lugnet.robotics.rcx.legos)

Message is in Reply To:
  Re: patch for lnpd ( Collision problem in far-mode )
 
(...) Someway it looks like there is another problem with your setup, in near mode i have never seen the collision problem. Perhaps your encountering the problem reported by Toni: Obviuosly his uart does not work in 16450 mode, but does work in (...) (27 years ago, 14-Feb-00, to lugnet.robotics.rcx.legos)

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