/*
	FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 Richard Barry.

	This file is part of the FreeRTOS.org distribution.

	FreeRTOS.org is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	FreeRTOS.org is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with FreeRTOS.org; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

	A special exception to the GPL can be applied should you wish to distribute
	a combined work that includes FreeRTOS.org, without being obliged to provide
	the source code for any proprietary components.  See the licensing section 
	of http://www.FreeRTOS.org for full details of how and when the exception
	can be applied.

    ***************************************************************************
    ***************************************************************************
    *                                                                         *
    * Get the FreeRTOS eBook!  See http://www.FreeRTOS.org/Documentation      *
	*                                                                         *
	* This is a concise, step by step, 'hands on' guide that describes both   *
	* general multitasking concepts and FreeRTOS specifics. It presents and   *
	* explains numerous examples that are written using the FreeRTOS API.     *
	* Full source code for all the examples is provided in an accompanying    *
	* .zip file.                                                              *
    *                                                                         *
    ***************************************************************************
    ***************************************************************************

	Please ensure to read the configuration and relevant port sections of the
	online documentation.

	http://www.FreeRTOS.org - Documentation, latest information, license and 
	contact details.

	http://www.SafeRTOS.com - A version that is certified for use in safety 
	critical systems.

	http://www.OpenRTOS.com - Commercial support, development, porting, 
	licensing and training services.
*/

/* 
Changes from V2.0.0

	+ Use scheduler suspends in place of critical sections.

Changes from V2.6.0

	+ Replaced the inb() and outb() functions with direct memory
	  access.  This allows the port to be built with the 20050414 build of
	  WinAVR.
*/

#include "FreeRTOS.h"
#include "task.h"
#include "partest.h"

/*-----------------------------------------------------------
 * Simple parallel port IO routines.
 *-----------------------------------------------------------*/

#define partstALL_BITS_OUTPUT			( ( unsigned portCHAR ) 0xff )
#define partstALL_OUTPUTS_OFF			( ( unsigned portCHAR ) 0xff )
#define partstMAX_OUTPUT_LED			( ( unsigned portCHAR ) 7 )

static volatile unsigned portCHAR ucCurrentOutputValue = partstALL_OUTPUTS_OFF; /*lint !e956 File scope parameters okay here. */

/*-----------------------------------------------------------*/

void vParTestInitialise( void )
{
	ucCurrentOutputValue = partstALL_OUTPUTS_OFF;

	/* Set port B direction to outputs.  Start with all output off. */
	DDRB = partstALL_BITS_OUTPUT;
	PORTB = ucCurrentOutputValue;
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
unsigned portCHAR ucBit = ( unsigned portCHAR ) 1;

	if( uxLED <= partstMAX_OUTPUT_LED )
	{
		ucBit <<= uxLED;

		vTaskSuspendAll();
		{
			if( xValue == pdTRUE )
			{
				ucBit ^= ( unsigned portCHAR ) 0xff;
				ucCurrentOutputValue &= ucBit;
			}
			else
			{
				ucCurrentOutputValue |= ucBit;
			}

			PORTB = ucCurrentOutputValue;
		}
		xTaskResumeAll();
	}
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned portCHAR ucBit;

	if( uxLED <= partstMAX_OUTPUT_LED )
	{
		ucBit = ( ( unsigned portCHAR ) 1 ) << uxLED;

		vTaskSuspendAll();
		{
			if( ucCurrentOutputValue & ucBit )
			{
				ucCurrentOutputValue &= ~ucBit;
			}
			else
			{
				ucCurrentOutputValue |= ucBit;
			}

			PORTB = ucCurrentOutputValue;
		}
		xTaskResumeAll();			
	}
}