Steve Seaberg (steves@cube13.net)
Mon, 28 Sep 1998 14:22:35 -0400
http://www.2600.com/phrack/p50-11.html
not sure about the interrupt monitoring,
but the raw in/out works well.
steves
Jay Jacobson wrote:
>
> Hi everyone. I am working on a project with an embedded system running
> kernel 2.0.33. This project will be interfacing four push-button
> (debounced SPST) switches to the parallel port. Basically, when a button
> is pressed, it will put a high (logic 1) on the 'error' pin of the
> parallel port (to generate an interrupt) and it will also put a high on a
> single bit of the parallel port's data bus.
>
> I need a small piece of code (driver?) that will 'listen' for this
> interrupt and then check which bit on the parallel port data bus is high,
> and finally 'pass' that information to my main program. This will allow me
> to determine which button was pressed and allow my main program to respond
> accordingly.
>
> Does anyone know of any existing minimal code/drivers that will do this?
> Thanks for any help. :)
>
> ~Jay
>
> - J a y J a c o b s o n
> - - - - - - - - - - - - - - - - - -
> - jay@kinetic.org www.kinetic.org
>
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This archive was generated by hypermail 2.0b3 on Wed 30 Dec 1998 - 10:18:26 EST