Experimental Physics and
Industrial Control System

"Denison, PN \(Peter\)" <[email protected]> · Fri, 22 Jun 2007 11:05:41 +0100

> From: Dirk Zimoch [mailto:[email protected]] 
> 
> Denison, PN (Peter) wrote:
> > Asyn 4-8, streamDevice 2-2, EPICS 3.14.8.2, vxWorks 5.5.1 
> > on MVME5500
> > 
> What port driver are you using? One of those provided with 
> asyn (serial, TCP, ...) or a third party driver?

We're using the asynSerialPort, on top of a Hytec 8516 RS-485 module in
a Hytec 8002 IP carrier.

> About 600 chars: The asynInterposeEos layer uses an internal 
> buffer of 600 chars which it passes to lower level drivers.
> 
> As it may also be a bug in StreamDevice, please send me your 
> protocol file and records so that I can try to reproduce your
> problem.

Sure. We are trying to cut it down to the minimum to cause it to fail,
and also trying to reproduce on a test system, as the production IOC
will have to roll back to a working version for our next run starting on
Monday.

The crash appears to be in StreamDevice (data is trashed between the
calls to callInterruptUsers() and interruptEnd(), seemingly in the
intrCallbackOctet callback).

However, in trying to isolate it, the behaviour changes when autosave
state changes. We are using autosave 4-2-1, with local modifications to
the names of the status PVs.

Thanks for your help - I'll keep you posted.

-- 
Peter Denison, Senior Software Engineer
Diamond Light Source Ltd.
Tel: +44 1235 778511
(apologies in advance for the lines below. I have no control over it)

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System