'belkin-hid.c' and 'tripplite-hid.c' subdrivers, the only thing
that
happens when the shutdown functions are run is sending DelayBeforeShutdown
(if that's available, which it probably always is). According to the HID
Power Devices specification, it will do just that and is effectively the
same as 'shutdown.stayoff'. If there is mains power at that time, the
output will remain off.
There are generally two ways to shut down a HID UPS, compatible with NUT:
1) DelayBeforeReboot (shutdown.reboot)
2) DelayBeforeStartup (shutdown.return) and DelayBeforeShutdown
(shutdown.stayoff, to make sure the output is off before the startup timer
expires)
#1 has the advantage that it is just a single command (but it will act
immediately), while #2 allows to shutdown with a delay (making sure that
DelayBeforeStartup > DelayBeforeShutdown). We can probably deal with *all*
HID UPS'es with just these two methods, so I removed them from the
subdrivers and put it in usbhid-ups.c instead. New drivers can opt for
implementing any (or both) of these options by creating the appropriate
HID-to-NUT translation. Which one is available/used (if at all) will be
determined automatically during initialization.
Best regards, Arjen
PS I will correct the 'shutdown.restart' to 'shutdown.return'
later today
in the trunk. Even seasoned developers sometimes still get confused by the
meanings of the shutdown.* commands. ;-)
