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<== Date ==> <== Thread ==>

Subject: Re: high data rate with Asyn
From: Eric Norum <norume@aps.anl.gov>
To: Jiro Fujita <jiro.fujita@gmail.com>
Cc: tech-talk@aps.anl.gov
Date: Wed, 28 Jun 2006 13:37:40 -0500
That version of ASYN has a bug in the memory allocation code.  Please try ASYN 4-6 and see if the problem goes away.

On Jun 28, 2006, at 11:19 AM, Jiro Fujita wrote:

We have been working on writing an IOC on a Linux running EPICS
3.14.8.2 and Asyn 4-4 the last few days trying to connect to an RS-422
serial device that sends out signal 4 times a second.  The device is a
home made device, but it sends out ASCII character to its serial port.
While we have no problem reading the ASCII values in the terminal
emulation program, we are having a problem trying to read the stringin
under EPICS.  It reads about a second or two, then, we get
segmentation fault.  We have adjusted the scan rate and time-out
values in the device support, but we can't seem to get this right.
Does any body have an idea how to deal with this??

-- 
Eric Norum <norume@aps.anl.gov>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793



References:
high data rate with Asyn Jiro Fujita

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