userspace app needing signal on parport input change

userspace app needing signal on parport input change

[Melkor Ainur]

Hello,

Is there a way for a user space app to get a signal or
maybe woken up from select/read when there is a change
on a particular input pin on the parallel port?

Thanks.


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Re: userspace app needing signal on parport input change

[Bodo Eggert]

Melkor Ainur <melkorainur@yahoo.com> wrote:

> Is there a way for a user space app to get a signal or
> maybe woken up from select/read when there is a change
> on a particular input pin on the parallel port?

The easiest hack I can think of is: Change the db9-driver to be freely
configurable and make yourself a zero-axis 13-button "joystick".

http://www.infonewsindia.com/pinout/ibmlpt.txt might help for the pin
assignment. I guess you don't need it, but maybe some other vicolunteer does.