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In lugnet.general, John Hansen wrote:
> In lugnet.general, Philippe Hurbain wrote:
> >
> > The LEGO company just released a document detailing the complete protocol
> > used by Power Functions RC receiver.
>
> In collaboration with Jason Railton I have modified/extended the NBC and NXC API
> functions for the HiTechnic iRLink device in support of the newly documented
> Power Function modes as well as the R/C Train IR protocol. I uploaded a new
> test_release zip to the BricxCC page with NBC and BricxCC executable updates
> with these new API functions included in the compiler and BricxCC syntax
> highlighter/code completion support for NBC and NXC programs. These updates
> will be in the next beta release of NBC/NXC and the next official BricxCC
> release.
<snip>
Nicely done John!
Is there a tentative timeframe when NQC for the RCX will be updated to support
IR to the LEGO powerfunctions?
Dave K
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In lugnet.general, David Koudys wrote:
> In lugnet.general, John Hansen wrote:
> > In lugnet.general, Philippe Hurbain wrote:
> > >
> > > The LEGO company just released a document detailing the complete protocol
> > > used by Power Functions RC receiver.
> >
> > In collaboration with Jason Railton I have modified/extended the NBC and NXC API
> > functions for the HiTechnic iRLink device in support of the newly documented
> > Power Function modes as well as the R/C Train IR protocol. I uploaded a new
> > test_release zip to the BricxCC page with NBC and BricxCC executable updates
> > with these new API functions included in the compiler and BricxCC syntax
> > highlighter/code completion support for NBC and NXC programs. These updates
> > will be in the next beta release of NBC/NXC and the next official BricxCC
> > release.
>
>
> <snip>
>
> Nicely done John!
>
> Is there a tentative timeframe when NQC for the RCX will be updated to support
> IR to the LEGO powerfunctions?
>
> Dave K
I doubt that's possible - a bytecode program just can't run fast enough to do
the timing for the IR commands, on either brick. The NXT can only manage it
because it sends them over a slow comms link to a HiTechnic IRLink sensor, then
that handles the actual transmission. The only way the RCX could do it with
it's built-in IR LED is to code the functions into a replacement firmware, as
with Bob Kojima's BrickOS example:
http://news.lugnet.com/general/?n=54443
Jason R
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In lugnet.general, Jason J Railton wrote:
<snip>
> I doubt that's possible - a bytecode program just can't run fast enough to do
> the timing for the IR commands, on either brick. The NXT can only manage it
> because it sends them over a slow comms link to a HiTechnic IRLink sensor, then
> that handles the actual transmission. The only way the RCX could do it with
> it's built-in IR LED is to code the functions into a replacement firmware, as
> with Bob Kojima's BrickOS example:
>
> http://news.lugnet.com/general/?n=54443
>
> Jason R
I'm runnign Dick Swan's alternate firmware that he sent me a while back.
Dave K
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In lugnet.general, David Koudys wrote:
> I'm runnign Dick Swan's alternate firmware that he sent me a while back.
>
> Dave K
Dick Swan's replacement RCX firmware also does not support directly manipulating
the IR led and it doesn't support microsecond timing control. Both of these
features would be required in order to send the IR messages to a Power Function
or R/C train receiver. The only way RCX firmwares that are VM-based could
support emitting PF IR streams is if some setting in the UART area of the
firmware could be tweaked to emit bytes in a PF-compatible mode. To the best of
my knowledge this is not possible in either the standard RCX firmware or in
Dick's RCX-compatible firmware. John Barnes or Michael Barrett Anderson
(amongst others) would probably know for certain.
John Hansen
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In lugnet.general, John Hansen wrote:
> In lugnet.general, David Koudys wrote:
> > I'm runnign Dick Swan's alternate firmware that he sent me a while back.
> >
> > Dave K
>
> Dick Swan's replacement RCX firmware also does not support directly manipulating
> the IR led and it doesn't support microsecond timing control. Both of these
> features would be required in order to send the IR messages to a Power Function
rats!
> or R/C train receiver. The only way RCX firmwares that are VM-based could
> support emitting PF IR streams is if some setting in the UART area of the
> firmware could be tweaked to emit bytes in a PF-compatible mode. To the best of
> my knowledge this is not possible in either the standard RCX firmware or in
> Dick's RCX-compatible firmware. John Barnes or Michael Barrett Anderson
> (amongst others) would probably know for certain.
>
> John Hansen
Thanks for the heads up, John
Looks like I really have to start brushing up on my NXT 'bot building now.
Dave K
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