Cargo Features

EFM32GG990 has no features set by default.

[dependencies]
efm32gg990 = { version = "0.1.3", features = ["rt"] }
rt = cortex-m-rt

Affects interrupt::DH_TRAMPOLINE, interrupt::INTERRUPTS

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.

cortex-m-rt rt?

Enables cortex-m-rt ^0.3.13