On Wed, Apr 26, 2000 at 07:32:00PM -0400, Javier Bonet wrote:
> This is my first posting to this list. Please forgive me if this topic has
> been covered before.
>
> Is it possible for the Palm to transmit and receive infrared
> simultaneously? Could it emit IR and receive the reflection of its own IR?
>
> The HP-48 calculator, for example, IS capable of receiving and transmitting
> infrared simultaneously. This is used to self-test the infrared port: the
> infrared is reflected back from the plastic cover.
Yes. In fact if you set the ports to IrDA at the hardware level
(instead of using IrDA), this is what happens. You get back what you
send. There may be an echo suppress that I don't know about that can
be turned ON, but normally the uart gets back what the transmitter
sends.
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