Function feather_m4::i2c_master

pub fn i2c_master<F: Into<Hertz>>(
    clocks: &mut GenericClockController, 
    bus_speed: F, 
    sercom2: SERCOM2, 
    mclk: &mut MCLK, 
    sda: Pa12<Input<Floating>>, 
    scl: Pa13<Input<Floating>>, 
    port: &mut Port
) -> I2CMaster2

Convenience for setting up the labelled SDA, SCL pins to operate as an I2C master running at the specified frequency.