Experimental Physics and
Industrial Control System

Hi Marcio,

From Asyn version 4-31 onwards you don't need to specify the number of parameters in advance (see https://epics-modules.github.io/master/asyn/R4-31/RELEASE_NOTES.html). You can just use createParam() and the c++ std::vector will handle this for you. So, in your child class I believe you can just call createParam() as usual. You just need to call the father class method if the parameter ID does not belong to your class.

Regarding specifying interfaces/masks I'm not sure if you can modify this after the father class has already initialized. Of course you can always pass these interface/interrupt mask parameters via the constructor, but I think that's not what you want.

You can also take a look at the QuadEM module that does more or less what you want, apparently: https://github.com/epics-modules/quadEM/tree/master/quadEMApp/src

drvQuadEM would be your father class and drvTetrAMM, drvNSLS_EM, etc would be your child classes.

Hope this helps,

Cheers,

Lucas

On Thu, Jul 23, 2020 at 12:16 AM Paduan Donadio, Marcio via Tech-talk <tech-talk at aps.anl.gov> wrote: