Re: making edm draw the desired related display based on value of a PV

[Dayle Kotturi <dayle@slac.stanford.edu>]

To conclude this thread, this solution works, provided I use edm
1-12-33 or greater.  I'm using edm 1-12-38 with epics R3.14.8.2.

I found that caget -t appends a blank character to the result. So,
to use the result in the name of the embedded window file, I had to
strip that off with sed. Without doing this, the name was constructed as
"pdu_trig_PP0 .edl" which did not exist.

Here is how it looks:
> echo \'`caget -t TRIG:LI20:201:MODE`\'
'PP0 '
> echo \'`caget -t TRIG:LI20:201:MODE | sed 's/[ \t]*$//'`\'
'PP0'

In the .edl file that launches the related display, I set the macro 
MODE=`caget -t TRIG:LI20:201:MODE | sed 's/[ \t]*$//'`
and it works.

Dayle Kotturi

On Wed, 3 Nov 2010, John William Sinclair wrote:

> Hi Dayle,
>
> You may do the following when you specify the macro symbol values as
>
> name=SomeName,mode=`caget -t ModePv`
>
> This opens the related display and sets name to SomeName and mode to the
> value of ModePv.
>
> John Sinclair