Cargo Features

[dependencies]
pcf857x = { version = "0.4.0", default-features = false, features = ["unproven"] }
default = unproven

The unproven feature is set by default whenever pcf857x is added without default-features = false somewhere in the dependency tree.

unproven default

Enables unproven of embedded-hal ^0.2.5

PCF857x has 2 features without comments.