get mAh value in state file?

Nate Lawson nate at
Sun Feb 3 19:50:05 UTC 2008

Cihan Kömeçoğlu wrote:
> Dear list
> I have to write a c program which gets mAh value for battery energy
> measurement from state file. I need to know wheter ACPI send any signal
> or like when this values will be written to state file. That is , How
> can I know when this values will be written?
> And the second question , for file locking mechanism when I read this
> value from state file  What do I have to use?(maybe flock function?)

acpiconf -i flag is what you want, I think.  Not sure if you mean 
current capacity or total.  Also look at sysctl hw.acpi


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