Home-Brew IR port. Was - Please Ignore RS232 message. The subject should read IrDA port... Sorry

[Alan Ide]

Upon closer inspection the home-brew IR uses the DTR line, not the TX line.

On 5/11/07, Alan Ide <gamebeavis at gmail.com> wrote:
>
> Now that is something I did not see. If the UART is IrDA-compliant, and it
> can be freed up that eliminates most of the headache. However if it cant be
> freed up, and all 3 UARTs are being used, that doesnt leave us with many
> options...
>
> On 5/11/07, Joe Pfeiffer <jjpfeifferjr at comcast.net> wrote:
> >
> > Werner Almesberger writes:
> > >I wrote:
> > >> You could of course try to dual use some UART. I wonder why LIRC
> > >> requires a UART. Does it use it to generate the 38 kHz carrier ?
> > >
> > >Ah, postings crossed. Well, given that you have real PWMs, you
> > >could also consider dual-using one of these, in addition to
> > >dual-using a UART. It all depends on which current-use item you
> > >find most convenient to sacrifice :)
> >
> > Two thoughts -- first, one wonders if RTS/CTS handshaking is really used
> >
> > by the GPS?  Maybe the pins could be wired together on the GPS, or
> > even just wire RTS high?
> >
> > Second, if either that's feasible or the pin can be dual-used, the
> > spec sheet says the UART is IrDA-compliant.  So if it can be used at
> > all, it ought to be possible to hook up an LED and have it work.
> >
> >
>
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