widgets: Add hwmontemp_linux

Introduce hwmontemp_linux widget, which provides name-based access to hwmon
sensors via sysfs.
This commit is contained in:
Alexander Koch 2019-01-15 11:23:23 +01:00 committed by Nguyễn Gia Phong
parent 36abb4f26c
commit ded191cf4e
2 changed files with 76 additions and 0 deletions

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@ -264,6 +264,22 @@ Supported platforms: GNU/Linux, requiring `hddtemp` and `curl`.
* Returns a table with string keys, using hard drives as a base, e.g. * Returns a table with string keys, using hard drives as a base, e.g.
`${/dev/sda}` and `${/dev/sdc}`. `${/dev/sda}` and `${/dev/sdc}`.
### vicious.widgets.hwmontemp
Provides name-based access to hwmon devices via sysfs.
Supported platforms: GNU/Linux
* Argument: table with sensor name and (optional) input number, e.g.
`{ "radeon", 2 }` (input no. is assumed to be 1 if omitted)
* Returns a table with just the temperature value: `$1`
* Usage example:
```lua
gputemp = wibox.widget.textbox()
vicious.register(gputemp, vicious.contrib.hwmontemp, " $1°C", 5, { "radeon" })
```
### vicious.widgets.mbox ### vicious.widgets.mbox
Provides the subject of last e-mail in a mbox file. Provides the subject of last e-mail in a mbox file.

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@ -0,0 +1,60 @@
----------------------------------------------------------------
-- Licensed under the GNU General Public License v2
-- (C) 2019, Alexander Koch <lynix47@gmail.com>
----------------------------------------------------------------
-- environment
local io = { popen = io.popen, open = io.open }
local assert = assert
local setmetatable = setmetatable
-- sysfs prefix for hwmon devices
local sys_hwmon = "/sys/class/hwmon/"
-- cache table for hwmon device names
local paths = {}
-- transparently caching hwmon device name lookup
function name_to_path(name)
if paths[name] then return paths[name] end
for sensor in io.popen("ls -1 " .. sys_hwmon):lines() do
local path = sys_hwmon .. sensor
local f = assert(io.open(path .. "/name", "r"))
local sname = f:read("*line")
f:close()
if sname == name then
paths[name] = path
return path
end
end
return nil
end
-- hwmontemp: provides name-indexed temps from /sys/class/hwmon
-- vicious.widgets.hwmontemp
local hwmontemp_linux = {}
function worker(format, warg)
assert(type(warg) == "table", "invalid hwmontemp argument: must be a table")
name = warg[1]
if not warg[2] then
input = 1
else
input = warg[2]
end
local sensor = name_to_path(name)
if not sensor then return { "N/A" } end
local f = assert(io.open(("%s/temp%d_input"):format(sensor, input), "r"))
local temp = f:read("*line")
f:close()
return { temp / 1000 }
end
return setmetatable(hwmontemp_linux, { __call = function(_, ...) return worker(...) end })
-- vim: ts=4:sw=4:expandtab