topology id doesn't show EVR connected to port 8

epics-modules / mrfioc2

EPICS driver for Micro Research Finland event timing system devices

http://epics-modules.github.io/mrfioc2/

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topology id doesn't show EVR connected to port 8 #49

Closed krmpotic closed 8 months ago

krmpotic commented 3 years ago

If EVR is disconnected and reconnected to another EVM port, topology id changes (PV "*ID-I"). If however EVR is disconnected and reconnected (accidentaly) to EVM's upstream port 8, topology id remains what it was. Link shows OK.

mdavidsaver commented 3 years ago

The ID record is 32-bit, and has (ultimately) a periodic scan. I haven't spent much time playing around with DC features other than the central delay measurement. Off hand I can't think of a reason why a register change wouldn't be reflected in the record. Maybe the register itself isn't changing? This could be checked with eg. pciread from the IOC shell.