On Mon, Jan 3, 2011 at 3:48 PM, Russell Senior <[email protected]> wrote:
> >>>>> "Denis" == Denis Heidtmann <[email protected]> writes: > > Denis> Thanks, Russell. There is a file there named voltage_now, > Denis> which seems to hold a recent voltage. What system decides when > Denis> to update that file? Can I interrogate whatever writes that > Denis> file to get more frequent updates? BAT0 is a link to BAT0 -> > Denis> > ../../devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/PNP0C0A:00/power_supply/BAT0, > Denis> for whatever that is worth. > > The /sys filesystem is a userspace view of various kernel values. For > more information about sysfs, see: > > http://en.wikipedia.org/wiki/Sysfs > > So, however often the kernel updates the battery information, that's > how often the value in BAT0 updates. From a shell, you can run: > > watch -n 1 cat /sys/class/power_supply/BAT0/voltage_now > > to get an idea how fast it is updating. It appears to be every few > seconds. > > There are some other interesting values in > /sys/class/power_supply/BAT0 too. Figuring out what units they are > using can sometimes be a challenge. > > > -- > Russell Senior ``I have nine fingers; you have ten.'' > Fantastic! I can see myself getting a curve out of this. -Denis _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
