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// Copyright (C) 2017 - IIT Bombay - FOSSEE
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
// Organization: FOSSEE, IIT Bombay
// Email: toolbox@scilab.in
// Function to decide direction of a digital pin on AVR
//
// Calling Sequence
// AVRDigitalPortSetup(port,direction)
//
// Parameters
// port : port of microcontroller to be used (1 for PORTA, 2 for PORTB,...)
// direction : direction to be set for pin (0 for input, 1 for output)
//
// Description
// Each AVR microcontroller has pins which can be configured as digital
// outputs/inputs. These are normally divided among some 'ports' (group of pins).
// User has to select one of these port and which pin of that port to be
// used as digital output/input. Also, desired direction must be specified as
// 'INPUT' or 'OUTPUT'.
//
// Examples
// AVRDigitalPortSetup(1,0); //this function will PortA as input Port
//
// Authors
// Siddhesh Wani
// Ashish Kamble
#include "AVRPeripheralGPIO.h"
uint8 u8AVRDigitalPortSetups(uint8 port,uint8 direction)
{
if(direction == INPUT)
{
/*Set port as input*/
if(port == PORT_A)
{
DDRA = 0x00;
}
if(port == PORT_B)
{
DDRB = 0x00;
}
if(port == PORT_C)
{
DDRC = 0x00;
}
if(port == PORT_D)
{
DDRD = 0x00;
}
}
else
{
/*Set port as output*/
if(port == PORT_A)
{
DDRA = 0xFF;
}
if(port == PORT_B)
{
DDRB = 0xFF;
}
if(port == PORT_C)
{
DDRC = 0xFF;
}
if(port == PORT_D)
{
DDRD = 0xFF;
}
}
return 0;
}
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