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Subject: Re: CSS-4.5 : Display-Builder : getting widget's PV value
From: Amien Crombie <acrombie@tlabs.ac.za>
To: "Kasemir, Kay" <kasemirk@ornl.gov>, EPICS Tech-Talk <tech-talk@aps.anl.gov>
Date: Thu, 24 Aug 2017 15:09:41 +0200

Hi Kay

According to 'cainfo' my pv is a DBF_DOUBLE and request is DBR_DOUBLE


But I do not know how to check for output with the 'print' statement..I'm using Mint 18 and CSS is started without a terminal command (am I doing something wrong?)

I do have a 'console' output but that just list dozens of 'Warnings' all over.

I would love to have some way to debug CSS as otherwise its like shooting in the dark.

Amien


On 24/08/2017 14:56, Kasemir, Kay wrote:

Hi:


What's the data type of the PV?

To debug, try adding

 

  print(str(pv.read()))


and then check in the terminal where you started CSS for the output.


-Kay




From: tech-talk-bounces@aps.anl.gov <tech-talk-bounces@aps.anl.gov> on behalf of Amien Crombie <acrombie@tlabs.ac.za>
Sent: Thursday, August 24, 2017 4:54 AM
To: EPICS Tech-Talk
Subject: CSS-4.5 : Display-Builder : getting widget's PV value
 

Hi

My code :

1.     from org.csstudio.display.builder.runtime.script import PVUtil, ScriptUtil
2.     from org.csstudio.display.builder.model.properties import WidgetColor
3.     ss = ScriptUtil.findWidgetByName(widget, "ss_range")
4.     sx = ScriptUtil.findWidgetByName(widget, "rangeX")
5.     pv = ScriptUtil.getPrimaryPV(sx)
6.     pval = PVUtil.getDouble(pv)
7.     ss.setPropertyValue("text", str(pv) + " : " + str(pval))    ##

##  'pv' returns the right pv attached to my 'spinner'. This pv is passed via the script as '$(pv_name)'

##  pval returns 'nan' although my 'spinner' displays the value (1 to 6) depending my last selected value


Thanks

Amien





Replies:
Re: CSS-4.5 : Display-Builder : getting widget's PV value Kasemir, Kay
References:
CSS-4.5 : Display-Builder : getting widget's PV value Amien Crombie
Re: CSS-4.5 : Display-Builder : getting widget's PV value Kasemir, Kay

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