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Subject: Re: Reading scope waveforms with StreamDevice + asyn
From: Rod Nussbaumer <[email protected]>
To: Dirk Zimoch <[email protected]>
Cc: epics Techtalk <[email protected]>
Date: Mon, 16 Jan 2012 10:34:30 -0800
Thanks Dirk. I will try it tomorrow. And thanks for the clarification on interaction between StreamDevice and Asyn.

   ---   Rod.


Dirk Zimoch wrote:
Rod,

I tried to fix the drvLinuxGpib.c. Please try. I cannot test it here.

Dirk


Dirk Zimoch wrote:
Hi Rod,

Not specifying any terminator means: Do not touch the terminator
settings. That means use whatever is specified by asynDriver with
asynOctetSetInputEos and asynOctetSetOutputEos in the startup script.
If neither is used, the default is empty string for both. Setting the
terminator to "" or any other string overwrites the asynDriver setting.

I had a look at drvLinuxGpib.c and found:
* It never sets eomReason. Thus StreamDevice (or any other asynUser)
has no chance to find EOI.
* Under some circumstances it sets EOS to '\0' instead of nothing.

Dirk





References:
Reading scope waveforms with StreamDevice + asyn Rod Nussbaumer
Re: Reading scope waveforms with StreamDevice + asyn Dirk Zimoch
Re: Reading scope waveforms with StreamDevice + asyn Rod Nussbaumer
Re: Reading scope waveforms with StreamDevice + asyn Dirk Zimoch
Re: Reading scope waveforms with StreamDevice + asyn Dirk Zimoch

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