I’ve just finished a change to the Onkyo binding and would like to send a pull request for it. I’ve simply added a rule action that can be used to send raw eISCP commands to the receiver, so everyone is able to send commands that are not directly supported by the channels on the binding.
Here are my changes: https://github.com/TheNetStriker/openhab2-addons/commit/5c2aa881f9e44fe10be7a14b55498656986a2734
Could please someone look over my changes if everything is ok before I try to send the pull request?