From ewald.fauster@unileoben.ac.at Fri Jun 14 12:09:43 2002
From: ewald.fauster@unileoben.ac.at (Fauster Ewald - Uni)
Date: Fri, 14 Jun 2002 13:09:43 +0200
Subject: [pxc] PXC200 L under RedHat Linux 7.1
Message-ID: <005001c21393$fc963d60$8a1eaac1@iapc38>
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Hi,
I'm trying to run a Imagenation PXC200 L framegrabber (which perfectly =
works under Windows) under Rethad Linux 7.1 using the pxc0.81 driver. =
Making and Loading (using pxc_load) works without any problem, but =
grabbing doesn't work at all. Pxc_live or pxc_grab stop executing =
without returning ...
Probably, the read-command does not give back any data from the card and =
just blocks!
Can you please tell me, if I'm doing anything wrong or which problem =
causes this situation!
Any help could be useful for me!
Regards, Ewald.
Ewald Fauster
----------------------
University of Leoben
Institute for Automation
Peter-Tunner-Strasse 27
8700 Leoben
AUSTRIA
E-Mail: ewald.fauster@unileoben.ac.at
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Hi,
I'm trying to run a Imagenation PXC200 =
L=20
framegrabber (which perfectly works under Windows) under Rethad Linux =
7.1 using=20
the pxc0.81 driver. Making and Loading (using pxc_load) works without =
any=20
problem, but grabbing doesn't work at all. Pxc_live or pxc_grab stop =
executing=20
without returning ...
Probably, the read-command does not =
give back any=20
data from the card and just blocks!
Can you please tell me, if I'm doing =
anything wrong=20
or which problem causes this situation!
Any help could be useful for =
me!
Regards, Ewald.
Ewald=20
Fauster
----------------------
University of Leoben
Institute =
for=20
Automation
Peter-Tunner-Strasse 27
8700 =
Leoben
AUSTRIA
E-Mail: ewald.fauster@unileoben.ac.=
at
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From rubini@gnu.org Fri Jun 14 12:17:42 2002
From: rubini@gnu.org (Alessandro Rubini)
Date: Fri, 14 Jun 2002 13:17:42 +0200
Subject: [pxc] PXC200 L under RedHat Linux 7.1
In-Reply-To: <005001c21393963d60$8a1eaac1@iapc38>
References: <005001c21393963d60$8a1eaac1@iapc38>
Message-ID: <20020614131742.A26006@morgana.systemy.it>
Hi.
> Probably, the read-command does not give back any data from the card and =
> just blocks!
This can be checked by using strace. Also note that /dev/pxc0pgm
is a pgm file, you can read it with "cat" or whatever.
It's probably an interrupt problem: the driver isn't getting
interrupts so it just waits for a frame. Is there something
strange in how PCI irqs are mapped to the CPU?
I only have old computers, I can't check new stuff.
Here's a quote from Chanop Silpa-Anan on Sep 12 2001, on this list:
The driver works on both motherboards, however, I have to set the BIOS
to MPS 1.1 instead of MPS 1.4 to get the interrupt to happen. e.g. pxc
driver reports interupt 10 while /proc/pci reports interupt 19 etc....
, hence, could be the source of the problem I experienced.
FYI, MPS 1.4 will allow virtual interupt, IIRC.
PS: I assume you reserved RAM memory at boot, as he
no-buffers-available error does not block read waiting for a buffer.
Hope this helps
/alessandro