Re: pci card installation problem

I actually bumped into this same problem.  To install more than 4 cards 
from the comedi dist.  you need to do two things:
1)  Add extra lines in the makefile.  Towards the end of the makefile, 
you will see the command to add comedi entries in the /dev folder.  Off 
the top of my head, I think that it is something like "mknod 
/dev/comediN"  where N is the card number.  As a default, there are 
only four cards.
2) In comedi/include/linux/comedi.h, the maximum number of cards is 
defined by the COMEDI_NDEVICES.  If you aren't using the cvs version 
(which seems to allow up to 16 cards) then you will have to change 
COMEDI_NDEVICES from 4 to 12.

As a side note, I have been using comedi for about 6 months now.   I 
started on a Red Hat system but making everything work was well, heroic 
to say the least.  If ever decide to change distributions, try Debian 
(www.debian.org) or my personal favorite Gentoo (www.gentoo.org).

Good luck.

Sean

--
Sean Burke
Pegasus Toroidal Experiment
University of Wisconsin, Madison
Madison, Wisconsin 53703



On Jan 6, 2004, at 9:18 AM, Lalehan Candemir wrote:

> Hi all,
>
> i have a problem that i can not solve for the last two
> weeks.
>
> I am trying to install 12 advantech pci1762 cards on
> an advantech 4001 chassis. The sbc is advantech
> pca-6003 (i dont remember the backplane number now).
> And the OS is RedHat8.0
>
> anyway,
>
> i tried to install the latest version of comedi and
> comedilib but didnt work. I downloaded the comedi-7.60
> version but it didnt support my pci cards. So i
> downloaded the comedi and the comedilib the advantech
> company supplied on the net. (unfortunately they still
> dont add the linux drivers to their packed cds)
>
> I have followed the instructions on the red-hat notes
> of comedi. It only installed 4 cards. I searched for a
> solution and i found some answers on the comedilist. I
> applied those recepies but didnt work. Else all this
> compilation began to give error on kernel and thus on
> comedi.
>
> I re-installed redhat and comedi all over again. And
> although nothing seems to be wrong (no errors) i cant
> load the comedi devices. Even the modprobe doesnt seem
> to see the pci1762 files. When i run the comedi-config
> it says that it can not find the comedi.o file.
>
> This has been a long description of what happened but
> i have been on the user level on linux system since
> now and i dont have a clue about kernel and kernel
> compiling...
>
> I would be very glad if i can receive some help.
>
> best wishes,
>
> Lalehan
>
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Received on 2004-01-06Z16:09:03