[ltp] Re: Battery indication on byobu

[Jochen Spieker]

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Leandro Noferini:
> Jochen Spieker <ml@well-adjusted.de> writes:
>=20
>> http://blog.well-adjusted.de/posts/x240/
>=20
> Thanks a lot, I bookmarked your site and with the help of translation
> services I will enjoy!

Sorry, I didn't mention it's in German. But just search for tp-smapi,
then you will find the Lua code that I use to create a text display of
battery status.

I have since tweaked this a little bit and have a combined display of
remaining time:

function batteryInfo(widget)
    local batteries =3D {}
    local cap_sum =3D 0
    local pow_sum =3D 0
    local now_sum =3D 0
    for i =3D 0, 9 do
        local cur_battery =3D {}
        local adapter =3D "BAT"..i
        local fnow =3D io.open("/sys/class/power_supply/"..adapter.."/energ=
y_now")
        if fnow =3D=3D nil then
            break
        end
        local fcap =3D io.open("/sys/class/power_supply/"..adapter.."/energ=
y_full")
        local fdes =3D io.open("/sys/class/power_supply/"..adapter.."/energ=
y_full_design")
        local fsta =3D io.open("/sys/class/power_supply/"..adapter.."/statu=
s")
        local fpow =3D io.open("/sys/class/power_supply/"..adapter.."/power=
_now")
        cur_battery.name =3D adapter
        cur_battery.now =3D fnow:read()
        cur_battery.cap =3D fcap:read()
        cur_battery.des =3D fdes:read()
        cur_battery.sta =3D fsta:read()
        cur_battery.pow =3D fpow:read()
        cap_sum =3D cap_sum + cur_battery.cap
        pow_sum =3D pow_sum + cur_battery.pow
        now_sum =3D now_sum + cur_battery.now
        fnow:close()
        fcap:close()
        fdes:close()
        fsta:close()
        fpow:close()
        batteries[i] =3D cur_battery
    end

    widget.text =3D " "
    local charge_status =3D 0
    local minutes =3D "--"
    local hours =3D "--"
    for idx, battery in pairs(batteries) do
        local arrow =3D "=E2=86=92"
        if battery.sta:match("^Discharging$") then
            arrow =3D "=E2=86=98"
            charge_status =3D -1
        elseif battery.sta:match("^Charging$") then
            arrow =3D "=E2=86=97"
            charge_status =3D 1
        end
        local percentage =3D math.floor(battery.now * 100 / battery.des)
        widget.text =3D widget.text .. arrow .. percentage .. "%  "
    end

    if charge_status < 0 then
        minutes =3D string.format("%02i", math.floor(60*now_sum/pow_sum % 6=
0))
        hours =3D string.format("%02i", math.floor(now_sum/pow_sum))
    elseif charge_status > 0 then
        minutes =3D string.format( "%02i", math.floor(60*(cap_sum-now_sum)/=
pow_sum % 60) )
        hours =3D string.format( "%02i", math.floor((cap_sum-now_sum)/pow_s=
um) )
    end
    widget.text =3D widget.text .. " ("..hours..":"..minutes..")"
end


J.
--=20
If you do not move for long enough, you might see a rat.
[Agree]   [Disagree]
                 <http://www.slowlydownward.com/NODATA/data_enter2.html>

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