/*
	FreeRTOS.org V5.2.0 - 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 (version 2) as published
	by the Free Software Foundation and modified by the FreeRTOS exception.

	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 is included to allow you 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.


	***************************************************************************
	*                                                                         *
	* 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.                                                              *
	*                                                                         *
	***************************************************************************

	1 tab == 4 spaces!

	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.
*/

/* Scheduler include files. */
#include "FreeRTOS.h"
#include "portable.h"

/* Demo application include files. */
#include "partest.h"

/*-----------------------------------------------------------
 * Simple parallel port IO routines.
 *
 * This is for the demo application which uses port 2 for LED outputs.
 *-----------------------------------------------------------*/

/* Value for the LED to be off. */
#define partstLED_OUTPUTS		( ( unsigned portCHAR ) 0xff )

/* P2.0 is not used as an output so there are only 7 LEDs on port 2. */
#define partstMAX_LEDs			( 7 )
#define partstALL_OUTPUTS_OFF	( ( unsigned portCHAR ) 0 )

/* Maps the LED outputs used by the standard demo application files to
convenient outputs for the EDK2329.  Mainly this insures that the LED
used by the Check task is one of the on board LEDs so the demo can be
executed on an EDK without any modification. */
static inline unsigned portCHAR prvMapLED( unsigned portBASE_TYPE uxLED );

/*-----------------------------------------------------------*/

void vParTestInitialise( void )
{
	/* LED's are connected to port 2.  P2.1 and P2.2 are built onto the EDK.
	P2.3 to P2.7 are soldered onto the expansion port. */
	P2DDR = partstLED_OUTPUTS;
	P2DR = partstALL_OUTPUTS_OFF;
}
/*-----------------------------------------------------------*/

/*
 * Described at the top of the file.
 */
static inline unsigned portCHAR prvMapLED( unsigned portBASE_TYPE uxLED )
{
	switch( uxLED )
	{
		case 0	:	return ( unsigned portCHAR ) 2;
		case 1	:	return ( unsigned portCHAR ) 3;
		case 2	:	return ( unsigned portCHAR ) 4;
		case 3 	:	return ( unsigned portCHAR ) 5;
		case 4	:	return ( unsigned portCHAR ) 6;
		case 5	:	return ( unsigned portCHAR ) 0;
		case 6	:	return ( unsigned portCHAR ) 1;
		default	:	return 0;
	}
}
/*-----------------------------------------------------------*/

/*
 * Turn an LED on or off.
 */
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
unsigned portCHAR ucLED;

	if( uxLED < partstMAX_LEDs )
	{
		ucLED = prvMapLED( uxLED );

		/* Set a bit in the required LED position.  LED 0 is bit 1. */
		ucLED = ( unsigned portCHAR ) 1 << ( ucLED + 1 );

		if( xValue )
		{
			portENTER_CRITICAL();
				P2DR |= ucLED;
			portEXIT_CRITICAL();
		}
		else
		{
			portENTER_CRITICAL();
				P2DR &= ~ucLED;
			portEXIT_CRITICAL();
		}		
	}
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned portCHAR ucLED;

	if( uxLED < partstMAX_LEDs )
	{
		ucLED = prvMapLED( uxLED );

		/* Set a bit in the required LED position.  LED 0 is bit 1. */
		ucLED = ( unsigned portCHAR ) 1 << ( ucLED + 1 );

		portENTER_CRITICAL();
		{
			if( P2DR & ucLED )
			{
				P2DR &= ~ucLED;
			}
			else
			{
				P2DR |= ucLED;
			}
		}
		portEXIT_CRITICAL();
	}	
}