openHAB

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# LG webOS Binding

The binding integrates LG WebOS based smart TVs. This binding is an adoption of LG's Connect SDK (opens new window) library, which is no longer maintained and which was specific to Android.

# Supported Things

# LG webOS smart TVs

LG webOS based smart TVs are supported.

# TV Settings

The TV must be connected to the same network as openHAB. Under network settings allow "LG CONNECT APPS" to connect.

Note: Under general settings allow mobile applications to turn on the TV, if this option is available. On newer models this setting may also be called "Mobile TV On > Turn On Via WiFi". In combination with the wake on LAN binding this will allow you to start the TV via openHAB. Please see demo.items and demo.rules example below.

# Binding Configuration

The binding has no configuration parameter.

# Discovery

TVs are auto discovered through SSDP in the local network. The binding broadcasts a search message via UDP on the network in order to discover and monitor availability of the TV.

Please note, that if you are running openHAB in a Docker container you need to use macvlan or host networking for this binding to work. If automatic discovery is not possible you may still manually configure a device based on host and access key.

# Thing Configuration

WebOS TV has three configuration parameters.

Parameters:

Name Description
host Hostname or IP address of TV
key Key exchanged with TV after pairing (enter it after you paired the device)
macAddress The MAC address of your TV to turn on via Wake On Lan (WOL). The binding will attempt to detect it.

# Configuration in .things file

Set host and key parameter as in the following example:

Thing lgwebos:WebOSTV:tv1 [host="192.168.2.119", key="6ef1dff6c7c936c8dc5056fc85ea3aef", macAddress="3c:cd:93:c2:20:e0"]

# Channels

Channel Type ID Item Type Description Read/Write
power Switch Current power setting. TV can only be powered off, not on, via the TV's API. Turning on is implemented via Wake On Lan, for which the MAC address must be set in the thing configuration. RW
mute Switch Current mute setting. RW
volume Dimmer Current volume setting. Setting and reporting absolute percent values only works when using internal speakers. When connected to an external amp, the volume should be controlled using increase and decrease commands. RW
channel String Current channel. Use the channel number or channel id as command to update the channel. RW
toast String Displays a short message on the TV screen. See also rules section. W
mediaPlayer Player Media control player W
mediaStop Switch Media control stop W
appLauncher String Application ID of currently running application. This also allows to start applications on the TV by sending a specific Application ID to this channel. RW
rcButton String Simulates pressing of a button on the TV's remote control. See below for a list of button names. W

The available application IDs for your TV can be listed using a console command (see below). You have to use one of these IDs as command for the appLauncher channel. Here are examples of values that could be available for your TV: airplay, amazon, com.apple.appletv, com.webos.app.browser, com.webos.app.externalinput.av1, com.webos.app.externalinput.av2, com.webos.app.externalinput.component, com.webos.app.hdmi1, com.webos.app.hdmi2, com.webos.app.hdmi3, com.webos.app.hdmi4, com.webos.app.homeconnect, com.webos.app.igallery, com.webos.app.livetv, com.webos.app.music, com.webos.app.photovideo, com.webos.app.recordings, com.webos.app.screensaver, googleplaymovieswebos, netflix, youtube.leanback.v4.

# Remote Control Buttons

The rcButton channel has only been tested on an LGUJ657A TV. and this is a list of button codes that are known to work with this device. This list has been compiled mostly through trial and error. Your mileage may vary.

Code String Description
LEFT Left button in cursor control group
RIGHT Right button in cursor control group
UP Up button in cursor control group
DOWN Down button in cursor control group
ENTER "OK" button in the center of the cursor control group
BACK "BACK" button
EXIT "EXIT" button
0-9 Number buttons
HOME "HOME" button
RED "RED" button
GREEN "GREEN" button
YELLOW "YELLOW" button
BLUE "BLUE" button
PLAY "PLAY" button
PAUSE "PAUSE" button
STOP "STOP" button

A sample HABPanel remote control widget can be found in this GitHub repository. (opens new window)

# Console Commands

The binding provides a few commands you can use in the console. Enter the command openhab:lgwebos to get the usage.

Usage: openhab:lgwebos <thingUID> applications - list applications
Usage: openhab:lgwebos <thingUID> channels - list channels
Usage: openhab:lgwebos <thingUID> accesskey - show the access key

The command applications reports in the console the list of all applications with their id and name. The command channels reports in the console the list of all channels with their id, number and name. The command accesskey reports in the console the access key used to connect to your TV.

# Example

demo.things:

Thing lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46 [host="192.168.2.119", key="6ef1dff6c7c936c8dc5056fc85ea3aef", macAddress="3c:cd:93:c2:20:e0"]

demo.items:

Switch LG_TV0_Power "TV Power" <television>  { autoupdate="false", channel="lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46:power" }
Switch LG_TV0_Mute  "TV Mute"                { channel="lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46:mute"}
Dimmer LG_TV0_Volume "Volume [%d]"           { channel="lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46:volume" }
Number LG_TV0_VolDummy "VolumeUpDown"
String LG_TV0_Channel "Channel [%s]"         { channel="lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46:channel" }
Number LG_TV0_ChannelDummy "ChannelUpDown"
String LG_TV0_Toast                          { channel="lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46:toast"}
Switch LG_TV0_Stop "Stop"                    { autoupdate="false", channel="lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46:mediaStop" }
String LG_TV0_Application "Application [%s]" { channel="lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46:appLauncher"}
Player LG_TV0_Player                         { channel="lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46:mediaPlayer"}

demo.sitemap:

sitemap demo label="Main Menu"
{
    Frame label="TV" {
        Switch item=LG_TV0_Power
        Switch item=LG_TV0_Mute
        Text item=LG_TV0_Volume
        Switch item=LG_TV0_VolDummy icon="soundvolume" label="Volume" mappings=[1="▲", 0="▼"]
        Default item=LG_TV0_Channel
        Switch item=LG_TV0_ChannelDummy icon="television" label="Channel" mappings=[1="▲", 0="▼"]
        Default item=LG_TV0_Player
        Default item=LG_TV0_Application
    }
}

demo.rules:

// for relative volume changes
rule "VolumeUpDown"
when Item LG_TV0_VolDummy received command
then
    switch receivedCommand{
        case 0: LG_TV0_Volume.sendCommand(DECREASE)
        case 1: LG_TV0_Volume.sendCommand(INCREASE)
    }
end

// for relative channel changes
rule "ChannelUpDown"
when Item LG_TV0_ChannelDummy received command
then
    val actions = getActions("lgwebos","lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46")
    if(null === actions) {
        logInfo("actions", "Actions not found, check thing ID")
        return
    }
                
    switch receivedCommand{
                    case 0: actions.decreaseChannel()
                    case 1: actions.increaseChannel()
    }
end

Example of a toast message.

LG_TV0_Toast.sendCommand("Hello World")

# Rule Actions

Multiple actions are supported by this binding. In classic rules these are accessible as shown in this example (adjust getActions with your ThingId):

Example

 val actions = getActions("lgwebos","lgwebos:WebOSTV:3aab9eea-953b-4272-bdbd-f0cd0ecf4a46")
 if(null === actions) {
        logInfo("actions", "Actions not found, check thing ID")
        return
 }

# showToast(text)

Sends a toast message to a WebOS device with openHAB icon.

Parameters:

Name Description
text The text to display

Example:

actions.showToast("Hello World")

# showToast(icon, text)

Sends a toast message to a WebOS device with custom icon.

Parameters:

Name Description
icon The URL to the icon to display
text The text to display

Example:

actions.showToast("http://localhost:8080/icon/energy?format=png","Hello World")

# launchBrowser(url)

Opens the given URL in the TV's browser application.

Parameters:

Name Description
url The URL to open

Example:

actions.launchBrowser("https://www.openhab.org")

# launchApplication(appId)

Opens the application with given Application ID.

Parameters:

Name Description
appId The Application ID. getApplications provides available apps and their appIds.

Examples:

actions.launchApplication("com.webos.app.tvguide") // TV Guide
actions.launchApplication("com.webos.app.livetv") // TV
actions.launchApplication("com.webos.app.hdmi1") // HDMI1
actions.launchApplication("com.webos.app.hdmi2") // HDMI2
actions.launchApplication("com.webos.app.hdmi3") // HDMI3

# launchApplication(appId, params)

Opens the application with given Application ID and passes an additional parameter.

Parameters:

Name Description
appId The Application ID. Console command lgwebos applications provides available apps and their appIds.
params The parameters to hand over to the application in JSON format

Examples:

actions.launchApplication("appId","{\"key\":\"value\"}")

(Unfortunately, there is currently no information on supported parameters per application available.)

# sendText(text)

Sends a text input to a WebOS device.

Parameters:

Name Description
text The text to input

Example:

actions.sendText("Some text")

# sendButton(button)

Sends a button press event to a WebOS device.

Parameters:

Name Description
button Can be one of UP, DOWN, LEFT, RIGHT, BACK, DELETE, ENTER, HOME, or OK

Example:

actions.sendButton("OK")

# increaseChannel()

TV will switch one channel up in the current channel list.

Example:

actions.increaseChannel

# decreaseChannel()

TV will switch one channel down in the current channel list.

Example:

actions.decreaseChannel

# Troubleshooting

In case of issues you may find it helpful to enable debug level logging and check you log file. Log into openHAB console and enable debug logging for this binding:

log:set debug org.openhab.binding.lgwebos
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