61 lines
1.6 KiB
Lua
61 lines
1.6 KiB
Lua
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----------------------------------------------------------------
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-- Licensed under the GNU General Public License v2
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-- (C) 2019, Alexander Koch <lynix47@gmail.com>
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----------------------------------------------------------------
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-- environment
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local io = { popen = io.popen, open = io.open }
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local assert = assert
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local setmetatable = setmetatable
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-- sysfs prefix for hwmon devices
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local sys_hwmon = "/sys/class/hwmon/"
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-- cache table for hwmon device names
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local paths = {}
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-- transparently caching hwmon device name lookup
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function name_to_path(name)
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if paths[name] then return paths[name] end
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for sensor in io.popen("ls -1 " .. sys_hwmon):lines() do
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local path = sys_hwmon .. sensor
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local f = assert(io.open(path .. "/name", "r"))
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local sname = f:read("*line")
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f:close()
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if sname == name then
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paths[name] = path
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return path
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end
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end
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return nil
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end
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-- hwmontemp: provides name-indexed temps from /sys/class/hwmon
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-- vicious.widgets.hwmontemp
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local hwmontemp_linux = {}
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function worker(format, warg)
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assert(type(warg) == "table", "invalid hwmontemp argument: must be a table")
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name = warg[1]
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if not warg[2] then
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input = 1
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else
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input = warg[2]
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end
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local sensor = name_to_path(name)
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if not sensor then return { "N/A" } end
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local f = assert(io.open(("%s/temp%d_input"):format(sensor, input), "r"))
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local temp = f:read("*line")
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f:close()
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return { temp / 1000 }
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end
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return setmetatable(hwmontemp_linux, { __call = function(_, ...) return worker(...) end })
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-- vim: ts=4:sw=4:expandtab
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