Carlos E. R. wrote:
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The Tuesday 2008-01-22 at 22:04 -0500, Aaron Kulkis wrote:
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What a putz.
Just enough information to...make you wish you had the
information you actually need. Worthless :-(
What is NECESSARY is what the UPS send out on the serial
line to indicate that line power has been lost.
And then you'll find that many PCs do not have a serial port.
Universal SERIAL Bus.
I never realised that it doesn't count as a serial line.
If it's connected by USB, then the manufacturer can damn
well describe the data that passes across it when it talks
to a windows machine.
It's not like we're talking about some super-secret
communications protocol which, if publicly revealed,
would give significant aid to competing companies.
The usb method is the way of things to be, and besides, can give you
more info, like current AC voltage, state of the battery, remaining on
battery time (so that the driver decides when to power off safely)...
Only if the manafucturer describes the format of the
communications protocol
Just a single line to tell you that you are running on batteries is
insufficient nowdays.
I wasn't talking about using an RS-232 line...I'm talking
about describing the data that the damn thing puts onto
the USB line.
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