Inputs

Read pin

	if (PORTBbits.RB0 == 0)

#define IO_EXTERNAL_POWER_PRESENT		(!PORTBbits.RB0)

Read port

	unsigned int MyVar = PORTB;

Outputs

Write pin

	LATAbits.LATA6 = 1;
	LATAbits.LATA7 = 0;

#define	LED		LATEbits.LATE1

#define CHARGE_OUTPUT(state)		LATBbits.LATB0 = state

Write port

	LATA = 0x0040;			//Sets output latch. 0=low, 1=high

	LATASET = 0x0040;		//Sets high bits, without affecting other pins

	LATACLR = 0x0040;		//Clears high bits, without affecting other pins

Direction

#define	PORTA_IO	0x0204		//Setup the IO pin type (0 = output, 1 = input)

	TRISA =  PORTA_IO;

	TRISASET = (PORTA_IO);		//Sets high bits as input, without affecting other pins

	TRISACLR = (~PORTA_IO);		//Sets high bits as output, without affecting other pins


#define	KEYPAD_POWER_TRIS(state)		TRISEbits.TRISE2 = state