//***********************************************************************************
//
// avriomacros.h	(rev 1.1)
//
// Author:	Jeremy Greenwood
//
// Description:
//			Includes basic macro functions for input and output tasks. Intended for
//		use with AVR microcontrollers compiled with GCC.
//
//		To use this in a project:
//												
//		A)	1. Add this file to project	  or	B)	1.	Add this file to avr/include
//			2. #include "avriomacros.h"				2.	#include <avriomacros.h>
//
//***********************************************************************************

/* Macro function to declare an output pin */
#define out(bit,port)	DDR##port |= (1 << bit)

/* Macro function to declare an input pin */
#define in(bit,port)	DDR##port |= (0 << bit)

/* Macro function to set an output pin high */
#define on(bit,port)	PORT##port |= (1 << bit)

/* Macro function to set an output pin low */
#define off(bit,port)	PORT##port &= ~(1 << bit)

/* Macro function to toggle an output pin */
#define flip(bit,port)	PORT##port ^= (1 << bit)

/* Macro function to set internal pullup resistor of input pin (same as on macro)*/
#define pullup(bit,port)	PORT##port |= (1 << bit)	// helps distinguish whats being done without comments

/* Macro function to get state of input pin */
#define get(bit,port)	(PIN##port & (1 << bit))