/*
    FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
     *    robust, strictly quality controlled, supported, and cross          *
     *    platform software that has become a de facto standard.             *
     *                                                                       *
     *    Help yourself get started quickly and support the FreeRTOS         *
     *    project by purchasing a FreeRTOS tutorial book, reference          *
     *    manual, or both from: http://www.FreeRTOS.org/Documentation        *
     *                                                                       *
     *    Thank you!                                                         *
     *                                                                       *
    ***************************************************************************

    This file is part of the FreeRTOS distribution.

    FreeRTOS 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.

    >>! NOTE: The modification to the GPL is included to allow you to distribute
    >>! a combined work that includes FreeRTOS without being obliged to provide
    >>! the source code for proprietary components outside of the FreeRTOS
    >>! kernel.

    FreeRTOS 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.  Full license text is available from the following
    link: http://www.freertos.org/a00114.html

    1 tab == 4 spaces!

    ***************************************************************************
     *                                                                       *
     *    Having a problem?  Start by reading the FAQ "My application does   *
     *    not run, what could be wrong?"                                     *
     *                                                                       *
     *    http://www.FreeRTOS.org/FAQHelp.html                               *
     *                                                                       *
    ***************************************************************************

    http://www.FreeRTOS.org - Documentation, books, training, latest versions,
    license and Real Time Engineers Ltd. contact details.

    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
    including FreeRTOS+Trace - an indispensable productivity tool, a DOS
    compatible FAT file system, and our tiny thread aware UDP/IP stack.

    http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
    Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and middleware.

    http://www.SafeRTOS.com - High Integrity Systems also provide a safety
    engineered and independently SIL3 certified version for use in safety and
    mission critical applications that require provable dependability.

    1 tab == 4 spaces!
*/

/*
Changes from V1.01:

	+ Types used updated.
	+ Add vParTestToggleLED();

Changes from V2.0.0

	+ Use scheduler suspends in place of critical sections.
*/


#include "FreeRTOS.h"
#include "task.h"
#include "partest.h"

#define partstALL_OUTPUTS_OFF			( ( unsigned short) 0x00 )
#define partstMAX_OUTPUT_LED			( ( unsigned char ) 7 )
#define partstPORT_F_ADDR				( ( unsigned short ) 0x605 )
#define partstPORT_DIRECTION_REG		( ( unsigned short ) 0x606 )
#define partstPORT_F_DIR_BIT			( ( unsigned short ) 0x20 )

/*lint -e956 File scope parameters okay here. */
static volatile unsigned char ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
/*lint +e956 */

/*-----------------------------------------------------------
 * Simple parallel port IO routines.
 *-----------------------------------------------------------*/

void vParTestInitialise( void )
{
unsigned short usInput;

	ucCurrentOutputValue = partstALL_OUTPUTS_OFF;

	/* Set the direction to output for port F. */
	usInput = portINPUT_BYTE( partstPORT_DIRECTION_REG );
	usInput |= partstPORT_F_DIR_BIT;
	portOUTPUT_BYTE( partstPORT_DIRECTION_REG, usInput );

	/* Start with all outputs off. */
	portOUTPUT_BYTE( partstPORT_F_ADDR, partstALL_OUTPUTS_OFF );
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portBASE_TYPE uxLED, portBASE_TYPE xValue )
{
unsigned char ucBit = ( unsigned char ) 1;

	if( uxLED <= partstMAX_OUTPUT_LED )
	{
		ucBit <<= uxLED;
	}	

	vTaskSuspendAll();
	{
		if( xValue == pdTRUE )
		{
			ucBit ^= ( unsigned char ) 0xff;
			ucCurrentOutputValue &= ucBit;
		}
		else
		{
			ucCurrentOutputValue |= ucBit;
		}

		portOUTPUT_BYTE( partstPORT_F_ADDR, ( unsigned ) ucCurrentOutputValue );
	}
	xTaskResumeAll();
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned char ucBit;

	if( uxLED <= partstMAX_OUTPUT_LED )
	{
		ucBit = ( ( unsigned char ) 1 ) << uxLED;

		vTaskSuspendAll();
		{
			if( ucCurrentOutputValue & ucBit )
			{
				ucCurrentOutputValue &= ~ucBit;
			}
			else
			{
				ucCurrentOutputValue |= ucBit;
			}

			portOUTPUT_BYTE( partstPORT_F_ADDR, ( unsigned ) ucCurrentOutputValue );
		}
		xTaskResumeAll();			
	}
}