Tom Metro wrote: > Here's the challenge: I have available an ASUS RT-N16 router running > Tomato USB firmware attached to a fixed wireless receiver, and I'd like > to have a watchdog timer that resets both when there is a loss of > Internet connectivity.
A few years ago I searched for a commercial solution for this and didn't turn up much useful. (A few PCI cards designed for servers. Nothing that would work with a router.) I just ran another search and uncovered that Tripp Lite has a bunch of models that include a "Watchdog system service to restore operation to locked equipment through soft reboot of application/OS or hard power off/on reboot of connected equipment - ideal for unattended kiosk applications." Information about it is sparse, but they have some packaged software to support it (for Windows): http://www.tripplite.com/en/products/model.cfm?txtModelID=2590 I called them and confirmed the hardware does implement a watchdog timer. It's just a matter of getting the necessary technical info to create some software to talk to it from the router. By this point I was over the heads of the 1st and 2nd level support people, so they asked that I email a description of the info I wanted and they'd research it and get back to me. Hopefully it isn't information they keep proprietary. Some of their inexpensive models (like the INTERNET350U <$50) support this. According to the marketing info it uses an "HID-compliant USB interface." I see both NUT (http://www.networkupstools.org/) and libhid (http://libhid.alioth.debian.org/) have been ported to similar router platforms. I expect the general UPS driver won't help with the watchdog feature, but the source could be illustrative. -Tom _______________________________________________ Hardwarehacking mailing list [email protected] http://lists.blu.org/mailman/listinfo/hardwarehacking
