Development of OH3 GPIO binding

[Tobias_Romer (Tobias Römer)]

Hi,

I am using OH since a longer time and plan to upgrade my OH2.5 to OH3. I am using raspberry GPIO 1.x binding for my motion-sensors. Before I am starting to develop a OH3 GPIO binging I wanted to ask you first, whether there is a specific reason, why GPIO has not been developed yet? Are there architectural decisions/reasons for it? Or should I just jump into it and start with the development? I would call it “GPIO digital input binding” - would that be ok or should it be more specific like “GPIO motion sensor binding”?

Thank you and BR
Tobi

[Confectrician (Jerome Luckenbach)]

For reference

openHAB 1 addon compatibility overview with openHAB 3

it looks like someone was/is already working on an implementation.

[gpio] GPIO Binding initial contribution

Edit:
Just recognized that this is your first post here.
So welcome here and thanks for your encouragement to contribute to openHAB.
Maybe you can help out finalize the existing Pull Request. It is open for quite a while as it seems.

[J-N-K (Jan N. Klug)]

Nils and me are already working on that. I think it’s close to be finalized.

[Tobias_Romer (Tobias Römer)]

This is cool - thank you for developing it. May I help testing? I didn’t compiled the latest source yet but started with the last jar-file of the binding that I could find (org.openhab.binding.gpio-3.1.0-SNAPSHOT.jar). I defined things / items (Contact and Switch to test) via file and via gui - they went online - unfortunately the item state stays “NULL”. A direct call “pigs r 18” shows the current state of the gpio intput (0/1). Logging with debug didn’t showed me additional hints. Sorry for being so silly … What should I do next, how can I help you best with testing?

Edit: In between I compiled the binding locally / while loading “things” the following error occurred:

020-12-29 13:28:47.110 [ERROR] [core.thing.internal.ThingManagerImpl] - Exception occurred while calling thing handler factory 'org.openhab.binding.gpio.internal.GPIOHandlerFactory@11ed1e9': class org.openhab.core.thing.internal.ThingImpl cannot be cast to class org.openhab.core.thing.Bridge (org.openhab.core.thing.internal.ThingImpl and org.openhab.core.thing.Bridge are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @f3b790) java.lang.ClassCastException: class org.openhab.core.thing.internal.ThingImpl cannot be cast to class org.openhab.core.thing.Bridge (org.openhab.core.thing.internal.ThingImpl and org.openhab.core.thing.Bridge are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @f3b790)

[ramy_rutu (Ram)]

Has this been solved, any solution for GPIO binding for OH3 ?

Thanks

[hafniumzinc (T)]

Yes, in the post you replied to the author of the new binding replied that they were developing an OH3 replacement.

[GPIO] New GPIO Binding for OH3

Hi there! I developed a GPIO Binding for openHAB 3. It is expected to be available in openHAB 3.1. If you want to test it before the official release, you have to type the following commands in the openHAB console (not the console of your system): bundle:install https://openhab.jfrog.io/artifactory/libs-pullrequest-local/org/openhab/addons/bundles/org.openhab.binding.gpio/3.1.0-SNAPSHOT/org.openhab.binding.gpio-3.1.0-SNAPSHOT.jar bundle:start org.openhab.binding.gpio For usage instructions, …

[ramy_rutu (Ram)]

Thanks, i will give it a try and update back sometimes this week.