Cargo Features
stm32-hal has no features set by default.
[dependencies]
stm32-hal = { version = "0.2.0", features = ["use-stm32f103xx"] }- use-stm32f103xx = stm32f103xx, vcell
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.