Hi, Reference: [email protected] wrote: > OS: Debian Wheezy > Nut: 2.6.4-2.3 > Installation method: Synaptic > Device: CDP B-UPR505 > Traces, debugs, etc.: Not available or irrelevant > > Description: > > Where I currently live (Honduras), buying a UPS with monitoring capability > means spending at least twice as much as a "plain-Jane" model - usually even > more than that. Thus, since I can't afford the ones with monitoring, all I > have are ones that have absolutely no connection for monitoring. > > Many years ago, when monitoring just wasn't common yet, I developed a device > to attached to a serial port and plug into an unprotected wall outlet and > then wrote a C program to run as a daemon on my SCO Xenix systems to check > whether that serial port could be opened or not. When the power went out, > the device (not being connected to the UPS) would lose power, my program > would not be able to open that serial port and the program would wait a > couple of minutes (in case the power came back on) and then issue the > shutdown command. > > Nowadays, the computers no longer have serial ports, so I have modified my > concept by inserting a small relay into a USB mouse, hooking the coil to a > wall transformer, cutting the USB power wire and hooking the resulting ends > to the normally-open contacts of the relay. Thus, when there is power, the > mouse works. When there isn't power, it's as though the mouse isn't even > connected to the machine. (This can be done with an old, second mouse, so as > not to interfere with the operation of the mouse I'd actually be moving > around the screen.) > > So, here's my question: how can I get Nut to recognize such a set-up? > Obviously, it's USB, but it's NOT the typical USB-HID that existing drivers > would expect. With my programming experience, I'd probably be able to write > the sub-driver for this, but I really don't know much about USB. For that > matter, depending upon the USB information I get, I may even be able to write > my own simple daemon (or even a shell script) without using Nut, at all, but > it would be nice to be able to integrate it into Nut so I could have the > Windows Nut client get info from the Linux machine, rather than my having to > attempt such programming in the Windows environment. > > Of course, if someone has already developed what I described, then that would > be even better, but I haven't found it in the Nut lists or documentation, yet. > > Thank you for any assistance you may provide.
Nice idea ! Maybe you don't even need to use NUT, (Or could feed into back end of NUT daemon (to inform hosts & do the countdown etc) from an alternate device input detector.) In the case of FreeBSD, /etc/devd/*.conf allows programs to be automatically run on connection & disconnection of a USB device, (maybe your Linux offers similar ?). Examples of FreeBSD USB `attach` & `detach` manual & command /usr/src/sbin/devd/devd.conf.5 http://svnweb.freebsd.org/base/head/sbin/devd/devd.conf.5?view=markup http://www.berklix.com/~jhs/src/bsd/fixes/freebsd/src/jhs/etc/devd/jhs.conf Cheers, Julian -- Julian Stacey, BSD Unix Linux C Sys Eng Consultant, Munich http://berklix.com Reply below not above, like a play script. Indent old text with "> ". Send plain text. No quoted-printable, HTML, base64, multipart/alternative. _______________________________________________ Nut-upsuser mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser
