Module backend 

The contract between OpenLogi’s HID++ layer and the HID stack beneath it.

HidBackend is the seam. Above it sits everything that knows HID++ and nothing about a host; below it sits one implementation per host HID API — openlogi-hid over async-hid today, a scripted device tree in tests, and WebHID under wasm if that is ever built.

Its own dependencies stay host-free for the same reason, which CI’s wasm (portable crates) job checks rather than trusts. The conversions from a backend’s own types belong with that backend, never here.

Structs

NodeId

Opaque identity of one HID node, as the backend that enumerated it names it.

NodeInfo

One HID node as the backend reports it, before anything is opened.

Enums

BackendError

A failure raised by the HID backend beneath the HID++ channel layer.

HotplugEvent

A HID node appeared on or vanished from the OS device tree.

Traits

HidBackend

The HID stack beneath OpenLogi’s HID++ layer.

RawWriter

A raw output-report sink, for reports the HID++ framing cannot model.

Type Aliases

HotplugStream

A stream of HotplugEvents, boxed so HidBackend stays object-safe.