Re: Problem with PVA group def using .json file

[Ignacio Arriagada via Tech-talk <tech-talk at aps.anl.gov>]

Thanks Michael! With the update, the .json file worked and I have my groups up and running.

Best regards,

Ignacio

On Fri, Mar 17, 2023 at 8:35 AM Michael Davidsaver <mdavidsaver at gmail.com> wrote:

On 3/15/23 16:50, Ignacio Arriagada via Tech-talk wrote:
> Hello everyone,
> I'm trying to configure a PVA group using a json file, but I get the following error:

...
> *synch:Page1: Error Group not created: NULL channel
> synch:Page2: Error Group not created: NULL channel*
...
> The group is defined in *cemSoftIoc.json* as follows:
...> And the database is defined in *cemSoftIoc.db* as follows:
...
> If I define the same groups within the database using the q:group definition it works without issues. But trying the json definition, it fails because of a null channel.

I suspect that this issue is fixed by a change to the pva2pva module
which has not yet been released.  With it, I am able to load a
modified version of cemSoftIoc.db  (change genSub -> aSub, remove
UF* fields) and cemSoftIoc.json.

https://github.com/epics-base/pva2pva/commit/db5af06e07b726b17422413a8176201d3687bdf9


> $ softIocPVA -m top=synch: -d cemSoftIoc.db -G cemSoftIoc.json
> Starting iocInit
> ############################################################################
> ## EPICS R7.0.7.1-DEV
> ## Rev. R7.0.7-128-g6399af2037deb2b75eb8-dirty
> ## Rev. Date Git: 2023-03-12 09:15:10 +0000
> ############################################################################
> recGblRecordError: aSubRecord::init_record - SNAM subr not found Subroutine not found PV: synch:CmplxData
> iocRun: All initialization complete
> epics> dbgl
> synch:Page1
> synch:Page2
> epics>