Switch ON Philips TV with HDMI CEC via Kodi

So my Philips TV (2010) has limited interaction possibilities, I use a few via the Jointspace binding. I cannot switch on the TV as Jointspace is only capable of sending commands when the TV is on. However the TV supports the CEC protocol via HDMI (more info: wiki).

My Media/TV setup: RPi 3 with LibreElec installed running kodi v16.x. The RPi and Kodi support sending CEC commands to the TV. I use the XBMC binding to interact with Kodi, which all works well. The 1.x XBMC binding supports Input.ExecuteAction, but cannot execute built-in Kodi functions as far as I understand.

I made it work by using the exec binding:

rule "Switch the TV on via CEC/Kodi"
	Item TVOn received update ON
then {
	logInfo("RULE", "TV is switched on")
	val String FeedbackScript = executeCommandLine('ssh@@root@192.168.xx.xx@@`echo@@"on@@0"@@|@@cec-client@@-s`', 10000)
	logInfo("RULE", FeedbackScript)

A prerequisite is that you don’t need a password when using the ssh command, by shared keys. Also you need to add ssh to visudo.

But to me this looks like a suboptimal solution and I would like to understand the following:

  1. Is there a smarter way to execute a Kodi built-in function like CECActivateSource? Kodi wiki.


Btw, this is a good post to sort out any troubles with the exec binding, it helped me a lot.


EDIT: Updated by removing the script I used to circumvent the non-functioning of the exec binding directly from openHAB.

1 Like

Thanks for this tutorial, but unfortunately I am not able to set it up correctly.

I am running openHAB 2.1.0-1 (Release Build) on openHABianPi, my media center is libreELEC 8.0.2. Both are running on RPi 2.

In my .items I defined my Philips TV as follows:

Switch Fernseher "Fernseher" ["Lighting"]

I also added a rule following your example:

rule "Switch the TV on via CEC/Kodi"
	Item Fernseher received update ON
then {
	logInfo("RULE", "TV is switched on")
	val String FeedbackScript = executeCommandLine('ssh@@root@192.168.X.Y@@`echo@@"on@@0"@@|@@cec-client@@-s`', 10000)
	logInfo("RULE", FeedbackScript)

I then followed this to generate a key pair.

On openHABian I added via

sudo visudo

the following lines

openhab    ALL=(ALL:ALL) ALL
openhabian    ALL=(ALL:ALL) ALL

However, whenever I activate the toggle switch to switch on the TV, nothing happens and I get the following message in the log:

2017-07-24 19:09:48.475 [INFO ] [.eclipse.smarthome.model.script.RULE] - Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,password,keyboard-interactive).

However, when I ssh on the libreELEC RPi from the openHABian RPi, I am able to start the TV via the command line

echo "on 0" | cec-client -s

I believe I have a permissions problem, but I did not figure out where. My assumption is that I did not correctly “add ssh to visudo”.

As I am new to the forum, I hope that my problem description is precise enough. Any help on this issue is highly appreciated.


I figured out my mistake. In fact I generated the key pair with the openhabian user instead of the openhab user. Just in case anybody is running in the same problem.

Hi HG,

Good that you could solve it, I’ve been not able lately to spend anytime on the forum or on openHAB for that matter.


Just a simple (hopefully not blasphemic) question: why don’t you have the TV turn on automatically on CEC ?
You should be able to configure Kodi to send CEC on (Kodi) UI interaction or similar (I think it does anyway).
I’ve got a similar setup, just I have another media player (Dreambox TV receiver) to send CEC when you turn it on, so that’s how I start my combo.
No other chance anyway since I’ve got one of those new Samsung TVs that aren’t supported by the binding yet.

The simple reason is that the Raspberry running Kodi is permanently powered on because it also serves as a tvheadend server for another client. That’s why I need to be able to switch the TV separately. Secondly, I wanted to be able to tell Alexa to turn on the TV.

Try this :slight_smile:

rule "Switch the TV on via CEC/Kodi"
  Item TVOn received update ON
  executeCommandLine("sudo /etc/openhab2/scripts/switchTVon.sh")

//BASHSCRIPT -> switchTVon.sh

ssh root@192.168.xx.xx 'echo "on 0" | cec-client -s -d 1'

This is not the best Configuration :wink:

openhab ALL = (root) NOPASSWD: /etc/openhab2/scripts/switchTVon.sh

This is enough rights for the Openhab User , if you followed my rule

Can you publish the shell script too ?


See here :wink:

Thanks. I did not see that, because I expected a long script.


Can someone point me to the right direction.
How can I add those keys for the openhab user?!
I am not able to switch to that user and run the keygen and i have no idea where i should copy my keys according to How to solve Exec binding problems

It is maybe ultra easy but i am a bit lost now.

Forget it.
It seems there is a mistake in that exec binding problems thread.
Running now for me.

I will add a comment there, to discuss the possible mistake.