[Nut-upsdev] Four UPS's via usb.

Arjen de Korte nut+devel at de-korte.org
Fri Feb 1 12:03:32 UTC 2008

> May be I need hack libusb.c to match device number instead of port (use
> port
> directive from config file, but specify device number instead of path to
> device port), I found that udevinfo shows bus number and device number
> (different for all devices).

That won't work reliably. The devices are enumerated by the kernel, so
they get different device numbers when they reconnect (which depending on
your environement, may happen as often as once every half hour or more).

> Second variant is to place lock's on devices and do not match devices that
> locked.

That won't work either, because you still won't know which device is
which. The only difference will be the physical port they are connected to
and at present, we have no way of getting to that.


> lsusb -v shows iSerial parameter set to zero for all devices.

That was to be expected.

Best regards, Arjen
Eindhoven - The Netherlands
Key fingerprint - 66 4E 03 2C 9D B5 CB 9B  7A FE 7E C1 EE 88 BC 57

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