On 31.01.2017 19:03, Pierrick Hanlet wrote:
> I have a number of records over which I'm looping to assign values to
> fields such as alarm limits.
> The records and fields are assigned and then I assign a pointer to a
> struct to each of these so
> as to be able to loop over them.
>
> However, I also have some records in this list which don't have these
> fields; e.g. binaries and
> so there is no connection the missing fields, but still to the PV. So,
> within the loop, before writing
> a seq_pvPut(), I'd like to check if there is a valid connection to the
> field. I've tried
> seq_pvConnected(ss_id,ndx+i) and seq_pvAssigned(ss_id,ndx+1), where ndx is
> the PV and ndx+1 is assigned to the different fields of that PV.
> Any ideas?
The pvConnected built-in function should indeed do the trick. However,
if you use version 2.2 and write the function in SNL, not in C, there is
a much cleaner and less error prone solution: you can use an array of
unions, where each variant of the union reflects the fields available
for the record type behind it.
Cheers
Ben
--
"Make it so they have to reboot after every typo." ― Scott Adams
Attachment:
signature.asc
Description: OpenPGP digital signature
- References:
- snl 2.2.4 question Pierrick Hanlet
- Navigate by Date:
- Prev:
Problem of Running RTEMS/EPiCS Application on BSP altcycv_devkt Jianxium Yan
- Next:
Re: seq 2.2.4 problem? Benjamin Franksen
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
<2017>
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
snl 2.2.4 question Pierrick Hanlet
- Next:
pvaPy conda recipe? Lentz, Zachary L
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
<2017>
2018
2019
2020
2021
2022
2023
2024
|