Experimental Physics and
Industrial Control System

Benjamin Franksen <[email protected]> · Thu, 12 Jun 1997 11:37:50 +0200

On Wed, 11 Jun 1997, Guy Jennings wrote:
> Can any of the vxWorks gurus out there tell me if it is possible to do
> a head or a tail patch to a vxWorks interrupt service routine.  We want to
> hook in to the serial input interrupt and then pass on the servicing to the
> existing service routine.

Yes, I think that's a perfectly safe thing to do. Look at the VxWorks
documentation of the intLib and intArchLib libraries. There are numerous
functions that support this.

A year or so ago, when I worked in robotics, I had to implement a very
toughly timed task scheduler. So what I did was to set system clock to
cause an interrupt every 4 msec and then installed my own routine, which
basically waked up my scheduler task and then called the old VxWorks
stuff. Worked fine.

	Ben
-- 
The Notorious Neb Nesknarf
// snail: BESSY II, Rudower Chaussee 5, D-12489 Berlin, Germany
// email: [email protected]
// phone/fax: +49(30)6392-4865 / 6392-4859

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System