[Linux-parport] Simple Direct-IO

[Chris Fisichella]

>Heya;
>
>I'm a more-or-less novice programmer, and I thought I'd tinker 
>around with parallel/serial port use.  All I'd really like to do is 
>something very simple, setting the pegs individually to "on" or 
>"off," etc, much as shown in this Windows inpout32.dll-utilizing 
>program: 
><http://www.programmersheaven.com/search/download.asp?FileID=46877>http://www.programmersheaven.com/search/download.asp?FileID=46877 
>.
>
>I've Googled around, and have learned enough to know that Direct-IO 
>requires a kernel driver.  But now I'm stuck, and I seem to beunable 
>to further learn from Google.
>
>If I were to try and make a Linux app similar to the above mentioned 
>Windows app, how would I go about doing it?
>
>SigmaX


Are you writing a C program? If so, I would suggest you Check out Tim 
Waugh's documentation on the Linux 2.4 Parallel  Port Subsystem. I 
got my copy at:
people.redhat.com/twaugh/par port /par port book.pdf

In a fairly short amount of time, I was flicking bits and things like 
that. It was nice to see my Linux already had a parport driver ready 
to service my calls. Your mileage my vary.

The code was like:

open(

io_ctl this,
io_ctl that,

close....

Good luck,
Chris


>
>--
>My home page:  <http://www.SigmaX.org>http://www.SigmaX.org
>
>"ttocs laeno cire oshkosh b'gosh fyedernoggersnodden nicht stein bon 
>probiscus"
>
>"Education is what remains after one has forgotten everything he 
>learned in school"
>               -- Albert Einstein
>
>_______________________________________________
>Linux-parport mailing list
>Linux-parport at lists.infradead.org
>http://lists.infradead.org/mailman/listinfo/linux-parport