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Add possibility to give a list of batteries instead of only one.
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Maxime Chéramy committed May 28, 2016
1 parent 6fd1eec commit 5cdae1d
Showing 1 changed file with 59 additions and 40 deletions.
99 changes: 59 additions & 40 deletions widgets/bat.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -23,12 +23,12 @@ local setmetatable = setmetatable
-- lain.widgets.bat

local function worker(args)
local bat = {}
local args = args or {}
local timeout = args.timeout or 30
local battery = args.battery or "BAT0"
local ac = args.ac or "AC0"
local notify = args.notify or "on"
local bat = {}
local args = args or {}
local timeout = args.timeout or 30
local batteries = args.batteries or (args.battery and {args.battery}) or {"BAT0"}
local ac = args.ac or "AC0"
local notify = args.notify or "on"
local settings = args.settings or function() end

bat.widget = wibox.widget.textbox('')
Expand Down Expand Up @@ -58,50 +58,69 @@ local function worker(args)
watt = "N/A"
}

local bstr = "/sys/class/power_supply/" .. battery
local astr = "/sys/class/power_supply/" .. ac
local present = first_line(bstr .. "/present")
local sum_rate_current = 0
local sum_rate_voltage = 0
local sum_rate_power = 0
local sum_energy_now = 0
local sum_energy_full = 0
local sum_energy_percentage = 0

if present == "1"
then
-- current_now(I)[uA], voltage_now(U)[uV], power_now(P)[uW]
local rate_current = tonumber(first_line(bstr .. "/current_now"))
local rate_voltage = tonumber(first_line(bstr .. "/voltage_now"))
local rate_power = tonumber(first_line(bstr .. "/power_now"))
for i, battery in ipairs(batteries) do
local bstr = "/sys/class/power_supply/" .. battery
local present = first_line(bstr .. "/present")

-- energy_now(P)[uWh], charge_now(I)[uAh]
local energy_now = tonumber(first_line(bstr .. "/energy_now") or
first_line(bstr .. "/charge_now"))
if present == "1"
then
-- current_now(I)[uA], voltage_now(U)[uV], power_now(P)[uW]
local rate_current = tonumber(first_line(bstr .. "/current_now"))
local rate_voltage = tonumber(first_line(bstr .. "/voltage_now"))
local rate_power = tonumber(first_line(bstr .. "/power_now"))

-- energy_full(P)[uWh], charge_full(I)[uAh]
local energy_full = tonumber(first_line(bstr .. "/energy_full") or
first_line(bstr .. "/charge_full"))
-- energy_now(P)[uWh], charge_now(I)[uAh]
local energy_now = tonumber(first_line(bstr .. "/energy_now") or
first_line(bstr .. "/charge_now"))

local energy_percentage = tonumber(first_line(bstr .. "/capacity")) or
math.floor((energy_now / energy_full) * 100)
-- energy_full(P)[uWh], charge_full(I)[uAh]
local energy_full = tonumber(first_line(bstr .. "/energy_full") or
first_line(bstr .. "/charge_full"))

bat_now.status = first_line(bstr .. "/status") or "N/A"
bat_now.ac_status = first_line(astr .. "/online") or "N/A"
local energy_percentage = tonumber(first_line(bstr .. "/capacity")) or
math.floor((energy_now / energy_full) * 100)

-- update {perc,time,watt} iff rate > 0 and battery not full
if ((rate_current and rate_current > 0) or (rate_power and rate_power > 0))
and bat_now.status ~= "N/A" and bat_now.status ~= "Full"
then
local rate_time = 0
if bat_now.status == "Charging" then
rate_time = (energy_full - energy_now) / (rate_power or rate_current)
elseif bat_now.status == "Discharging" then
rate_time = energy_now / (rate_power or rate_current)
if bat_now.status ~= "Charging" and bat_now.status ~= "Discharging"
then
bat_now.status = first_line(bstr .. "/status") or "N/A"
end

local hours = math.floor(rate_time)
local minutes = math.floor((rate_time - hours) * 60)
local watt = rate_power and (rate_power / 1e6) or (rate_voltage * rate_current) / 1e12
sum_rate_current = sum_rate_current + (rate_current or 0)
sum_rate_voltage = sum_rate_voltage + rate_voltage
sum_rate_power = sum_rate_power + (rate_power or ((rate_voltage * rate_current) / 1e6))
sum_energy_now = sum_energy_now + energy_now
sum_energy_full = sum_energy_full + energy_full
sum_energy_percentage = sum_energy_percentage + energy_percentage
end
end

local astr = "/sys/class/power_supply/" .. ac
bat_now.ac_status = first_line(astr .. "/online") or "N/A"

bat_now.perc = string.format("%d", math.min(100, energy_percentage))
bat_now.time = string.format("%02d:%02d", hours, minutes)
bat_now.watt = string.format("%.2fW", watt)
-- update {perc,time,watt} iff rate > 0 and battery not full
if ((sum_rate_current > 0) or (sum_rate_power > 0))
and bat_now.status ~= "N/A" and bat_now.status ~= "Full"
then
local rate_time = 0
if bat_now.status == "Charging" then
rate_time = (sum_energy_full - sum_energy_now) / (sum_rate_power or sum_rate_current)
elseif bat_now.status == "Discharging" then
rate_time = sum_energy_now / (sum_rate_power or sum_rate_current)
end

local hours = math.floor(rate_time)
local minutes = math.floor((rate_time - hours) * 60)
local watt = sum_rate_power / 1e6
bat_now.perc = string.format("%d", math.min(100, sum_energy_percentage / table.getn(batteries)))
bat_now.time = string.format("%02d:%02d", hours, minutes)
bat_now.watt = string.format("%.2fW", watt)
end

widget = bat.widget
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