Data aquisition

QNX Newsgroups (Archives) comp.os.qnx
1

Good morning QNX users,

I’m looking for data acquisition and control cards that are supported
but QNX running on a PC?

Roger Doulis
(A polar bear is a rectangular bear after a co-ordinate transform).

Dept Civil Engineering (Clayton Campus) Ph 9905-4964
Fax 9905-1483
Roger Doulis
Structural Testing Officer
Dept. Civil Engineering
C/O P.O. Box 60
Monash University 3800
Victoria.
Australia.

2

I am having the same problem. I want to use QNX for real time control but
none of the data acquisition cards that I am using (frame grabber card and
multifunction I/O card) have QNX drivers. I presume the only way around the
problem is to write my own drivers. Does anyone have experience of doing
this? I’m not sure if it is feasible without a lot of cooperation from the
card manufacturers. Perhaps if I can find source code for Linux drivers
then I could modify it. Any thoughts on this QNX experts?

Thanks.

\

Paul.


Paul Jones
Department of Engineering Science
University of Oxford

Contact details:
Email: paul.jones@bnc.ox.ac.uk
Phone: 01865 283704
Moblie: 07790 560448

“Roger Doulis” <Roger.Doulis@eng.monash.edu.au> wrote in message
news:39D7B37A.D3679A75@eng.monash.edu.au…

Good morning QNX users,

I’m looking for data acquisition and control cards that are supported
but QNX running on a PC?

Roger Doulis
(A polar bear is a rectangular bear after a co-ordinate transform).

Dept Civil Engineering (Clayton Campus) Ph 9905-4964
Fax 9905-1483
Roger Doulis
Structural Testing Officer
Dept. Civil Engineering
C/O P.O. Box 60
Monash University 3800
Victoria.
Australia.

3

“Paul Jones” <paul.jones@bnc.ox.ac.uk> wrote in message
news:8r9ofe$oj2$1@inn.qnx.com…

I am having the same problem. I want to use QNX for real time control but
none of the data acquisition cards that I am using (frame grabber card and
multifunction I/O card) have QNX drivers. I presume the only way around
the
problem is to write my own drivers. Does anyone have experience of doing
this? I’m not sure if it is feasible without a lot of cooperation from
the
card manufacturers. Perhaps if I can find source code for Linux drivers
then I could modify it. Any thoughts on this QNX experts?

Options:

1 - Get the spec of the boards
2 - Get the linux source code if available, but check the provenance, if
it’s reverse enginering
I wouldn’t rely on this for commercial product
3 - Get hardware with driver

Thanks.

\

Paul.


Paul Jones
Department of Engineering Science
University of Oxford

Contact details:
Email: > paul.jones@bnc.ox.ac.uk
Phone: 01865 283704
Moblie: 07790 560448

“Roger Doulis” <> Roger.Doulis@eng.monash.edu.au> > wrote in message
news:> 39D7B37A.D3679A75@eng.monash.edu.au> …
Good morning QNX users,

I’m looking for data acquisition and control cards that are supported
but QNX running on a PC?

Roger Doulis
(A polar bear is a rectangular bear after a co-ordinate transform).

Dept Civil Engineering (Clayton Campus) Ph 9905-4964
Fax 9905-1483
Roger Doulis
Structural Testing Officer
Dept. Civil Engineering
C/O P.O. Box 60
Monash University 3800
Victoria.
Australia.

4

“Paul Jones” <paul.jones@bnc.ox.ac.uk> writes:

I am having the same problem. I want to use QNX for real time
control but none of the data acquisition cards that I am using
(frame grabber card and multifunction I/O card) have QNX drivers. I
presume the only way around the problem is to write my own drivers.
Does anyone have experience of doing this? I’m not sure if it is
feasible without a lot of cooperation from the card manufacturers.
Perhaps if I can find source code for Linux drivers then I could
modify it. Any thoughts on this QNX experts?

For DAQ cards, people generally write their own drivers. They are
typically fiddly programming with the IO ports, which can be written
and read using the inp,outp,inpw,outpw calls. People’s use of DAQ
cards is such that a general purpose driver is probably vast overkill,
and may not meet the specific usage pattern that you want.

Frame grabber drivers are not popular items because they take a long
time to write, and there are no facilities in Photon 1.14 for good
real-time video output. It would be valuable to have such drivers
(they can range in complexity from fairly easy to really difficult to
write), but the market probably isn’t there to build a business case
on.

If you are writing your own drivers, I suggest you start from scratch,
possibly using the Linux code to verify your initialization code.
Linux kernel modules and QNX drivers have a lot of philosophical
commonality, but not much code commonality.

\

Andrew Thomas, President, Cogent Real-Time Systems Inc.
2430 Meadowpine Boulevard, Suite 105, Mississauga, Ontario, Canada L5N 6S2
Email: andrew@cogent.ca WWW: http://www.cogent.ca

5

Try GAGE on www.gage-applied.com in Canada —

Roger Doulis wrote:

Good morning QNX users,

I’m looking for data acquisition and control cards that are supported
but QNX running on a PC?

Roger Doulis
(A polar bear is a rectangular bear after a co-ordinate transform).

Dept Civil Engineering (Clayton Campus) Ph 9905-4964
Fax 9905-1483
Roger Doulis
Structural Testing Officer
Dept. Civil Engineering
C/O P.O. Box 60
Monash University 3800
Victoria.
Australia.