Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Tue, 26 Jul 2016 14:42:14 +0000

Hi Andrew,

That's probably a good idea, since that is what it does for the stringout record, and we are trying to make them behave the same.

Mark

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Andrew Johnson
Sent: Tuesday, July 26, 2016 9:40 AM
To: [email protected]
Subject: Re: Inconsistency in devAsynOctet for stringout and waveform records

Hi Mark,

On 07/25/2016 09:32 PM, Mark Rivers wrote:
> When waveform records are being used for strings the null is removed
> in drivers because the length they are passed with asynOctetWrite
> does not include the null.  The length passed is NORD-1 if
> VAL[NORD-1] is 0.

If the waveform support is now intended explicitly for writing strings,
should it do an strlen() on the buffer and just send the characters
before first zero, which might appear even before VAL[NORD-1]?

Just a thought...

- Andrew

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System