Thanks! That make sense. I did found the UEFI ACPI specs, but I didn't realize 
it could be the hexadecimal representation.

> It will be good.
I'll look on how to document it.

forkbomb9

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, October 23, 2019 9:19 PM, Takanori Watanabe 
takaw...@init-main.com wrote:

> On Thu, Oct 24, 2019 at 01:31:01AM +0000, Namkhai Bourquin via freebsd-acpi 
> wrote:
>
> > Hi all! I'm writing a script to get battery status and capacity, and I'm 
> > using hw.acpi.battery for that. But I can't find a reference as to which 
> > states hw.acpi.battery.state supports. Not in DuckDuckGo, nor google, nor 
> > the mailing lists archive, nothing. I only managed to discover this by 
> > discharging the battery and monitoring:
> > state: 0 = unknow?
> > state: 1 = discharging
> > state: 2 = charging
> > state: 5 = discharging critical (life < 6)
> > state: 4 = same as 0, but with critical charge?
> > state: 6 = charging critical
>
> This is originally raw value of _BST which is specific ACPI method for
> control method battery, but smart battery device also simulate it.
>
> The bit macro is in /usr/include/dev/acpica/acpiio.h .
>
> #define ACPI_BATT_STAT_DISCHARG 0x0001
> #define ACPI_BATT_STAT_CHARGING 0x0002
> #define ACPI_BATT_STAT_CRITICAL 0x0004
>
> > I can't find anything on the man pages either.
> > Should this be documented, either on a man page or the sysctl's tunable 
> > description?
>
> It will be good.
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