[Nut-upsdev] Tripplite OMNI1000LCD Watchdog

[Thomas Golding]

Hello Nut Devs,

I'm working with usbhid-ups and a Tripplite OMNI1000LCD. I used a USB packet
sniffer to discover something cool about the watchdog feature in this unit.
(not sure if the other OMNI-X-LCD models work the same or not.) Basically
there's a single HID variable at Report ID 0x52
(UPS.OutletSystem.Outlet.ffff0092) that's one byte (0-255 int) and it
contains the Watchdog timeout value. If it's set to zero, the watchdog is
effectively disabled. If it's set to >0, it represents the amount of time
(in seconds) the UPS will count down to reboot if it looses comms with the
PC. Tripplite's PowerAlert software just writes a user-assigned number to
this location to enable watchdog.

I've looked at the code for 2.2.0, 2.2.1-pre, and SVN rev. 1170 (12-08-2007)
and none of them seems to implement watchdog in usbhid-ups at all.

Could anyone point me in the right direction on how to code
ups.watchdog.status and reset.watchdog in usbhid-ups?

Better yet, could ups.watchdog.timeout or something similar be added to the
NUT variables list? I'm going to hack together a use case for this watchdog
feature, because I REALLY need to use it now, however I'd like to help get
this feature into the main dev tree if possible.

Thanks,

Thomas Golding
Information Technology Engineer
World Radio Link
208-733-3551 ext. 14
thomasg at worldradiolink.com