You should be able to just open the device file (assuming you
have the device driver loaded) for the par port. It's probably
/dev/lp0 or something similar. Open just like a normal file and
you should be able to do read/writes just like a normal file. To
change the parameters for the port you use ioctl calls. These
ioctl calls should also let you do low level stuff like toggle/read
individual bits of the actual port. Since it sounds like you don't
want to use the parallel port except as a simple io port with 8
lines. Don't know about how to do ioctl()s with perl, but I did
a search for "ioctl parallel port" on google.com/linux and the
very first hit was somewhat helpful. Good luck.
weston
ps I have used ioctl() calls to directly access the individual pins
on a serial port for an IR interface project I did. I borrowed
the idea from the code for the X10 firecracker Linux driver.
Joe Knize wrote:
> Does anyone know how to program the parallel port? Specifically, I'd like
> to be able to read and write TTL level signals through the various pins,
> especially using Perl, but any leads on reading/writing would be
> appreciated.
>
> Thanks,
>
> jfk
>
>
>
> ---------------------------------------------------------------------------
> Send administrative requests to [EMAIL PROTECTED]
>
>
>
--
"Beware of he who would deny you access to information,
for in his heart, he dreams himself your master."
---------------------------------------------------------------------------
Send administrative requests to [EMAIL PROTECTED]
