serial_arduino_cross_chip.rs

// Generated for various serial ports, such as serial0, serial1, ... for each avr somewhere
trait SerialRegister {
    fn send(byte: &u8) -> Result<(), &'static str>;
    fn receive() -> Result<u8, &'static str>;
}

struct Serial<P> {
    _interface: PhantomData<SerialInterface<P>>
}

// Implementation wrapping serial register
impl <P> Serial<P>
    where P: SerialRegister
{
    fn new() -> Serial<P> {
        Serial::<P> {
            _interface: PhantomData
        }
    }

    fn send(byte: &u8) -> Result<(), &'static str> {
        P::send()
    }

    fn receive() -> Result<u8,&'static str> {
        P::receive()
    }
}

// Generated for each serial port for each avr somewhere
mod serial {
    static Serial0: Serial<Serial0Register> = Serial::<Serial0Register>::new();
    static Serial1: Serial<Serial0Register> = Serial::<Serial0Register>::new();
    // ...
}


// then called like
for &b in b"Hello World!\n" {
    serial::Serial0::send(b)?;
}