Using the serial port for GPIO.

[Tom Buskey]

On 5/12/06, Scott Garman <sgarman at iname.com> wrote:
>
> Has anyone here ever used the Linux serial port drivers as general
> purpose I/O? By that I mean not using the port for RS-232 protocol
> communications, but querying and setting the levels of individual pins
> on the port. This is for an embedded systems project I'm working on.



People  usually use the parallel port for this kind of stuff.  8 outputs
and  at least 5 inputs.  More inputs are possible w/ the newer bidirectional
ports.

parpin on sourceforge lets you work on individual pins.  There's tons of
info on using the parallel port for digital I/O out there.




-- 
A strong conviction that something must be done is the parent of many bad
measures.
  - Daniel Webster
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