#define setPinInput(port, pin)		port.DIRCLR |= pin
#define setPinOutput(port, pin)		port.DIRSET |= pin
#define setPinHigh(port, pin)		port.OUTSET = pin
#define setPinLow(port, pin)		port.OUTCLR = pin

	setPinInput(RX_PORT, RX_PIN);
	setPinOutput(TX_PORT, TX_PIN);
	setPinHigh(TX_PORT, TX_PIN);
	setPinOutput(RE_DE_PORT, RE_DE_PIN);