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Subject: asyn: what if a driver wants to force callbacks?
From: "Ford, Christopher" <[email protected]>
To: "[email protected]" <[email protected]>
Date: Wed, 25 May 2016 21:50:51 +0000
Hi,

In 2015 there was some discussion on Tech-Talk about how to force a callback for a parameter that had not changed values.
Mark Rivers suggested a work-around, as shown below.
I wonder if anyone has an update on the situation since then?  Has any other method appeared?  Or did you have success with the work-around?

Thanks,
 -Chris Ford, SLAC

On16 Nov 2015 Mark Rivers writes:
> If a driver wants to force a callback there is a method that does not require any changes to the base classes, e.g. exposing statusChanged_ as protected or adding a new
> isMotorRecordnowFilterButAlwaysProcess_ flag.  The driver simply needs to set a parameter to a different value from present and then back to its current value, for example
>  setDoubleParam(pC_->motorPosition_(position+1.);
>  setDoubleParam(pC_->motorPosition_(position);
>  callParamCallbacks();


Replies:
Re: asyn: what if a driver wants to force callbacks? Torsten Bögershausen
References:
Area Detector question Jörn Wüstenfeld
RE: Area Detector question ulrik.pedersen
RE: Area Detector question Mark Rivers

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