/*
    FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd. 
    All rights reserved

    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.             *
     *                                                                       *
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     *    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                               *
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    ***************************************************************************

    http://www.FreeRTOS.org - Documentation, books, training, latest versions,
    license and Real Time Engineers Ltd. contact details.

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    1 tab == 4 spaces!
*/

/*-----------------------------------------------------------
 * Simple parallel port IO routines.
 *-----------------------------------------------------------*/

/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"

/* Library includes. */
#include "mss_gpio.h"

#define partstMAX_LEDS		8

static volatile unsigned long ulGPIOState = 0UL;

/*-----------------------------------------------------------*/

void vParTestInitialise( void )
{
long x;

	/* Initialise the GPIO */
	MSS_GPIO_init();

	/* Set up GPIO for the LEDs. */
	for( x = 0; x < partstMAX_LEDS; x++ )
	{
		MSS_GPIO_config( ( mss_gpio_id_t ) x , MSS_GPIO_OUTPUT_MODE );
	}

	/* All LEDs start off. */
	ulGPIOState = 0xffffffffUL;
	MSS_GPIO_set_outputs( ulGPIOState );
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
	if( uxLED < partstMAX_LEDS )
	{
		/* A critical section is used as the LEDs are also accessed from an
		interrupt. */
		taskENTER_CRITICAL();
		{
			if( xValue == pdTRUE )
			{
				ulGPIOState &= ~( 1UL << uxLED );
			}
			else
			{
				ulGPIOState |= ( 1UL << uxLED );
			}
			
			MSS_GPIO_set_outputs( ulGPIOState );
		}
		taskEXIT_CRITICAL();
	}
}
/*-----------------------------------------------------------*/

void vParTestSetLEDFromISR( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
unsigned portBASE_TYPE uxInterruptFlags;

	uxInterruptFlags = portSET_INTERRUPT_MASK_FROM_ISR();
	{
		if( uxLED < partstMAX_LEDS )
		{
			if( xValue == pdTRUE )
			{
				ulGPIOState &= ~( 1UL << uxLED );
			}
			else
			{
				ulGPIOState |= ( 1UL << uxLED );
			}

			MSS_GPIO_set_outputs( ulGPIOState );
		}
	}
	portCLEAR_INTERRUPT_MASK_FROM_ISR( uxInterruptFlags );
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
	if( uxLED < partstMAX_LEDS )
	{
		/* A critical section is used as the LEDs are also accessed from an
		interrupt. */
		taskENTER_CRITICAL();
		{
			if( ( ulGPIOState & ( 1UL << uxLED ) ) != 0UL )
			{
				ulGPIOState &= ~( 1UL << uxLED );
			}
			else
			{
				ulGPIOState |= ( 1UL << uxLED );
			}
			
			MSS_GPIO_set_outputs( ulGPIOState );
		}
		taskEXIT_CRITICAL();
	}
}
/*-----------------------------------------------------------*/

long lParTestGetLEDState( unsigned long ulLED )
{
long lReturn = pdFALSE;

	if( ulLED < partstMAX_LEDS )
	{
		taskENTER_CRITICAL();
		{
			if( ( ulGPIOState & ( 1UL << ulLED ) ) == 0UL )
			{
				lReturn = pdTRUE;
			}
		}
		taskEXIT_CRITICAL();
	}

	return lReturn;
}
/*-----------------------------------------------------------*/