Hi
the watchdog notification will optionally be call only when the wdg configuration changes, to allow to adapt any custom SW scheduler (triggering the wdg) to stay synchronized. The also included Wdg driver can take care of triggering the watchdog.

There is also example code in the integration manual of the SBC driver

FYI, the Watchdog refresh notification is called after each refresh, to optionally evaluate the flags

best regards
Jochen