Wake TV when MacOS wakes from sleep (Hammerspoon)

waketv.lua

-- -------------------------------------------------------------------
-- THIS SCRIPT IS NOW DEPRECATED IN FAVOR OF A MORE ROBUST SOLUTION --
-- Please refer to https://github.com/cmer/lg-tv-control-macos/
-- -------------------------------------------------------------------

local tv_identifier = "LG TV"
local mac_address = "aa:bb:cc:dd:ee:ff"
local tv_found = (hs.screen.find(tv_identifier) ~= nil)
local debug = false  -- Set to true to enable debug messages

if debug then
  print("List of all screens: " .. hs.inspect(hs.screen.allScreens()))
  if tv_found then print("TV with identifier '"..tv_identifier.."' was detected.") end
end

watcher = hs.caffeinate.watcher.new(function(eventType)
  if (eventType == hs.caffeinate.watcher.screensDidWake or
      eventType == hs.caffeinate.watcher.systemDidWake or
      eventType == hs.caffeinate.watcher.screensDidUnlock) and tv_found then

    if debug then print("TV was turned on.") end
    hs.execute("/opt/homebrew/bin/wakeonlan "..mac_address)
  end
end)
watcher:start()

Nice stuff @cmer !

Hey are either of you hitting an issue where the LGTV Web OS Remote package doesn't stay installed on your machine? I keep having to reinstall it. Maybe it's a work thing.

It should definitely stay installed. Are the files just getting deleted?

Nice work on the repo. One option that I eventually want to add is a check to see if the current TV input is set to the mac's input before actually turning the TV off. This feature is on the windows LGTVCompanion app and avoids the TV turning off because your mac goes to sleep while you're on a different input.

I haven't had any issue with needing to reinstall anything. Could try changing the install method/location to see if that helps avoid whatever is removing it.

I'm taking it up with my IT department, yes the files get deleted and the library.

I also thought about checking the Input before switching, haven't had time to implement.

This is an amazing idea, @greyshi — I mostly use the TV as a monitor for my Mac, but can see how that’d be annoying.

I’ll try to see if I can whip this together. Or feel free to submit a PR!

Your wishes have been answered, @greyshi!

Wow that was quick! Going to give it a try.

LG's latest C2 update requires SSL enabled. LGWebOSRemote dev has updated the code to support ssl, but now the Lua code needs to reflect "lgtv path command ssl" to pass commands to the TV.

I tried appending ssl to the commands in Lua and still not working for me... I will hopefully have time to play with it more later today.

Wondering if I could get some help. I have installed Hmmerspoon & brew. I am reviewing the instructions to install LGWebOS (https://github.com/klattimer/LGWebOSRemote) but it says I have to have several other things installed (Requires wakeonlan, websocket for python (python3-websocket for python3), and getmac. python-pip (python3-pip for python3) and git are required for the installation process.). Is this correct? I'm not sure how to install all of these things on my Mac

@jmart987 have you seen the latest repo here? https://github.com/cmer/lg-tv-control-macos

hope that helps!

@jmart987 have you seen the latest repo here? https://github.com/cmer/lg-tv-control-macos

hope that helps!

Appreciate that, I'm not sure if I had the latest repo. But how do I install lgtvcontrol from this?

Do I just put this in terminal after installing hammer spoon and brew?

mkdir -p ~/opt
python -m venv ~/opt/lgtv
cd ~/opt/lgtv
source bin/activate
pip install git+https://github.com/klattimer/LGWebOSRemote

When I do that nothing really happens. I get a zsh: command not found

@jmart987 try it one line at a time instead of copying and pasting the whole thing.

@jmart987 have you seen the latest repo here? https://github.com/cmer/lg-tv-control-macos

hope that helps!

Works great! If you want to change inputs by using keyboard events/taps you could also add this in the .lua file ( I have this line at the top ) :

local control_inputs = true -- Switch inputs by events from keyboard

And then add this :

event = hs.eventtap.new({hs.eventtap.event.types.keyDown, hs.eventtap.event.types.systemDefined}, function(event)
    local type = event:getType()
    if type == hs.eventtap.event.types.keyDown then
      local keyCode = hs.keycodes.map[event:getKeyCode()]
        if keyCode == "f1" then
          exec_command("setInput HDMI_1")
        elseif keyCode == "f2" then
          exec_command("setInput HDMI_2")
        elseif keyCode == "f3" then
          exec_command("setInput HDMI_3")
        elseif keyCode == "f4" then
          exec_command("setInput HDMI_4")
        end
      end
end)

if control_inputs then
  event:start()
end

If you want other keys and not f1,2,3,4, just replace the strings with desired keys.