Trait SdaPin
stm32f30x_hal::i2c
pub unsafe trait SdaPin<I2C> { }
SDA pin -- DO NOT IMPLEMENT THIS TRAIT
impl SdaPin<I2C1> for PB7<AF4>
impl SdaPin<I2C1> for PB9<AF4>
impl SdaPin<I2C2> for PA10<AF4>
impl SdaPin<I2C2> for PF0<AF4>