homebridge/platforms/KNX.md

Syntax of the config.json

In the platforms section, you can insert a KNX type platform. You need to configure all devices directly in the config.json.

    "platforms": [
        {
            "platform": "KNX",
            "name": "KNX",
            "knxd_ip": "192.168.178.205", 
            "knxd_port": 6720,
            "accessories": [
                {
                    "accessory_type": "knxdevice",
                    "name": "Living Room North Lamp",
                    "services": [
                        {
                            "type": "Lightbulb",
                            "description": "iOS8 Lightbulb type, supports On (Switch) and Brightness",
                            "name": "Living Room North Lamp",
                            "On": {
                                "Set": "1/1/6",
                                "Listen": [
                                    "1/1/63"
                                ]
                            },
                            "Brightness": {
                                "Set": "1/1/62",
                                "Listen": [
                                    "1/1/64"
                                ]
                            }
                        }
                    ]
                }
        }

In the accessories section (the array within the brackets [ ]) you can insert as many objects as you like in the following form

    {
	    "accessory_type": "knxdevice",
	    "name": "Here goes your display name, this will be shown in HomeKit apps",
	    "services": [
	        {      
	        }
	    ]
    }

You have to add services in the following syntax:

    {
        "type": "SERVICENAME",
        "description": "This is just for you to remember things",
        "name": "We need a name for each service, though it usually shows only if multiple services are present in one accessory",
        "CHARACTERISTIC1": {
            "Set": "1/1/6",
            "Listen": [
                "1/1/63"
            ]
        },
        "CHARACTERISTIC2": {
            "Set": "1/1/62",
            "Listen": [
                "1/1/64"
            ]
        }
    }

CHARACTERISTICx are properties that are dependent on the service type, so they are listed below.

Two kinds of addresses are supported: "Set":"1/2/3" is a writable group address, to which changes are sent if the service supports changing values. Changes on the bus are listened to, too. "Listen":["1/2/3","1/2/4","1/2/5"] is an array of addresses that are listened to additionally. To these addresses never values get written, but the on startup the service will issue KNX read requests to ALL addresses listed in Set: and in Listen:

Supported Services and their characteristics

Lightbulb

• On: DPT 1, 1 as on, 0 as off
• Brightness: DPT5 percentage, 100% (=255) the brightest

LockMechanism

• LockCurrentState: DPT 1, 1 as secured OR (but not both:)

• LockCurrentStateSecured0: DPT 1, 0 as secured

• LockTargetState: DPT 1, 1 as secured OR

• LockTargetStateSecured0: DPT 1, 0 as secured

Thermostat

• CurrentTemperature: DPT9 in °C [listen only]
• TargetTemperature: DPT9, values 0..40°C only, all others are ignored
• CurrentHeatingCoolingState: DPT5 HVAC, because of the incompatible mapping only off and heating (=auto) are shown, [listen only]
• TargetHeatingCoolingState: as above

TemperatureSensor

• CurrentTemperature: DPT9 in °C [listen only]

Window

• CurrentPosition: DPT5 percentage
• TargetPosition: DPT5 percentage
• PositionState: DPT5 value [listen only]

WindowCovering

• CurrentPosition: DPT5 percentage
• TargetPosition: DPT5 percentage
• PositionState: DPT5 value [listen only]

not yet supported

• HoldPosition
• TargetHorizontalTiltAngle
• TargetVerticalTiltAngle
• CurrentHorizontalTiltAngle
• CurrentVerticalTiltAngle
• ObstructionDetected

ContactSensor

• ContactSensorState: DPT 1, 0 as contact OR

• ContactSensorStateContact1: DPT 1, 1 as contact

• StatusActive: DPT 1, 1 as true

• StatusFault: DPT 1, 1 as true

• StatusTampered: DPT 1, 1 as true

• StatusLowBattery: DPT 1, 1 as true

DISCLAIMER

This is work in progress!