Exposing In-Wall Dimmer Switches as Switch accessories about homebridge-lutron-caseta-leap HOT 6 CLOSED

I'm also not sure if In-Wall Dimmer Switches can even be exposed as "switch" accessories or if they're strictly "light" accessories.

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I've been trying to find actual documentation on LEAP and I cannot find anything. And I'm not sure how to use lutron-leap-js to experiment interactively.

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Hi Lily!

LEAP is a totally undocumented, proprietary protocol by Lutron. I'm not aware if Lutron has any kind of developer relations/outreach program, but I doubt it. They're friendly but I don't think we're their target market. :) The best resource I've found is actually their Android app, which can readily be decompiled to show how Lutron accomplishes what they choose to implement in their phone UIs.

To date, I haven't seen any indication that the non-Pro hub generates button press events, for Pico remotes or any other device. I have read (third-party library) documentation online to indicate that the Pro hub does send button press events via the LIP (Lutron Integration Protocol aka telnet) protocol. As I've mentioned in comments elsewhere, I strongly suspect that the (otherwise-unused) subscription method in LEAP can be used to request button press events, but my experimentation to date hasn't succeeded, and I've not planned to budget the cost of a Pro hub in order to reverse engineer it.

I've got some code somewhere to exercise lutron-leap-js - basically you just run a top-level async function to await the client repeatedly, with whatever reaction logic you want slipped inline. I don't know if there's a way to do it with a REPL (I don't really, like, do JS/TS).

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There’s another plugin that uses LIP with the Pro hub to turn Pico remotes into HomeKit buttons. I asked the author of that plugin if it could get button presses for the dimmer switches and they said no, it just reported light level changes, but I don’t have a Pro hub to test with.

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Hi @lilyball, I just got done adding support for Pico remotes (release forthcoming), and can now definitively say that buttons on non-remote devices aren't exposed in any way I can find. That's not to say it's impossible, it's just not something I can see a way to do.

The response from the hub for an in-wall dimmer looks like:

{'href': '/device/14', 'Name': 'Fan Light', 'FullyQualifiedName': ['Terrarium', 'Fan Light'], 'Parent': {'href': '/project'}, 'SerialNumber': 51726971, 'ModelNumber': 'PD-6WCL-XX', 'DeviceType': 'WallDimmer', 'LocalZones': [{'href': '/zone/11'}], 'AssociatedArea': {'href': '/area/11'}, 'LinkNodes': [{'href': '/device/14/linknode/14'}], 'DeviceRules': [{'href': '/devicerule/27'}], 'AddressedState': 'Addressed'}

There isn't an associated ButtonGroup, which means there aren't any buttons.

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@thenewwazoo Thanks for following up on this. I did end up getting a Pro hub and confirmed myself that the telnet protocol doesn't get button presses for in-wall dimmers. I'm disappointed but not surprised that LEAP doesn't either. I contacted Lutron System Support to ask about it as well and they confirmed that the Telnet protocol doesn't support this and that they've "passed this feature request to our product manager and engineering team for consideration as a future possibility with such Telnet Integrations", though they didn't mention LEAP.

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