ContactSensor -- Reading Status

Devices & Integrations
1

Hi All,

I am a newbie. I have started to write my first app, but I have run into some questions and I was hoping some one can help answer my questions.

My app is to “warn if z-wave lock is locked BUT the Contact Sensor is Open” I can’t figure out how to read the state of the Contact Sensor. I am handling the door lock or unlock event and then want to check the contact Sensor to see if the door is really closed.

I tried this def sensorState = thesensor(“open”), but no cigar.

Here is my app: thanks, Sal

preferences {
section(“Check Door Closed When Locked”) {
input “thesensor”, “capability.contactSensor”, required: true, title: “Which Open/Close Sensor?”
}
section(“Doors Locked”){
input “thelock”, “capability.lock”, title:“door lock”, required: true, multiple: false

}

}

def installed() {
log.debug “Installed with settings: ${settings}”

initialize()

}

def updated() {
log.debug “Updated with settings: ${settings}”

unsubscribe()
initialize()

}

def initialize() {
// TODO: subscribe to attributes, devices, locations, etc.
subscribe(thelock, “lock.locked”, lockLockedHandler)
subscribe(thelock, “lock.unlocked”, lockLockedHandler)
}

// TODO: implement event handlers

def lockLockedHandler(evt){
def sensorState = thesensor(“open”)
if (evt.value == “locked”) {
// locked detected
log.debug "lockLockedHandler called: LOCK $evt"
if (sensorState.value == “open”) {
log.debug “lockLockedHandler detected $thesensor is OPEN”
}}
if (evt.value == “unlocked”) {
// unlocked detected
log.debug “lockLockedHandler called: UNLOCK $evt”
}
}

2

@Sal,

Maybe try this:

def sensorState = thesensor.currentState("contact")
if sensorState.......

3

you also don’t need two device subscriptions for “thelock”, as both are using the same handler, and you are checking for the event value state. just use “lock”

4

Or you could use this,

if(contact1.latestValue(“contact”) == “open”)

5

Thank you:
Johnconstantelo — that did the trick.
Mike_Maxwell – I learned something new. Just using lock and one handler worked.
ashutosh1982 – can I use such a construct to check all my sensors?

6

The value statement you have is within an event handler, these are only executed when a device creates an event, so one event from your device = 1 method execution.
Now, when some given device emits an event, you can certainly check a list of devices to see what current state they’re in.
There are several forms of this depending on what you want to do with the result:
This form returns true only if all the motion detectors are inactive:

def state = motionSensors.currentState("motion").every{ s -> s.value == "inactive"}

7

You can also use a simpler form of test, namely motionSensors.currentMotion. Or, if(contact1.currentContact == "open").

currentAttribute is the same as currentValue("attribute")