Cargo Features

[dependencies]
a7105 = { version = "0.1.0", default-features = false, features = ["async", "blocking"] }
default = async

The async feature is set by default whenever a7105 is added without default-features = false somewhere in the dependency tree.

async default = embedded-hal-async
blocking = embedded-hal

Enables is_sync of maybe-async

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

embedded-hal blocking?
embedded-hal-async async