Trait Pins
stm32l0xx_hal::serial
pub trait Pins<USART> { fn setup(&self); }
fn setup(&self)
impl<Tx, Rx> Pins<LPUART1> for (PA2<Tx>, PA3<Rx>)
impl<Tx, Rx> Pins<USART2> for (PA9<Tx>, PA10<Rx>)