/*
    FreeRTOS V8.2.3 - Copyright (C) 2015 Real Time Engineers Ltd.
    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    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 on the following
    link: http://www.freertos.org/a00114.html

    ***************************************************************************
     *                                                                       *
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    ***************************************************************************

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*/


/*-----------------------------------------------------------
 * Simple IO routines to control the LEDs.
 *-----------------------------------------------------------*/

/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"

/* Demo includes. */
#include "partest.h"

/* Xilinx includes. */
#include "xgpio.h"


#define partstNUM_LEDS	8

/*-----------------------------------------------------------*/

/* The GPIO instance to which the LEDs are connected. */
static XGpio xOutputGPIOInstance;

/* Maintains the current LED output state. */
static volatile UBaseType_t uxGPIOState = 0U;

/* Constant required by the Xilinx peripheral driver API functions that are
relevant to the particular hardware set up. */
static const unsigned long ulGPIOOutputChannel = 1UL;

/*-----------------------------------------------------------*/

void vParTestInitialise( void )
{
portBASE_TYPE xStatus;
const unsigned char ucSetToOutput = 0U;

	/* Initialize the GPIO for the LEDs. */
	xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_AXI_GPIO_0_DEVICE_ID );
	if( xStatus == XST_SUCCESS )
	{
		/* All bits on this channel are going to be outputs (LEDs). */
		XGpio_SetDataDirection( &xOutputGPIOInstance, ulGPIOOutputChannel, ucSetToOutput );

		/* Start with all LEDs off. */
		uxGPIOState = 0U;
		XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
	}

	configASSERT( ( xStatus == XST_SUCCESS ) );
}
/*-----------------------------------------------------------*/

void vParTestSetLED( UBaseType_t uxLED, BaseType_t xValue )
{
	if( uxLED < partstNUM_LEDS )
	{
		taskENTER_CRITICAL();
		{
			if( xValue != pdFALSE )
			{
				uxGPIOState |= ( 1UL << uxLED );
			}
			else
			{
				uxGPIOState &= ~( 1UL << uxLED );
			}

			XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
		}
		taskEXIT_CRITICAL();
	}
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
	if( uxLED < partstNUM_LEDS )
	{
		taskENTER_CRITICAL();
		{
			uxGPIOState ^= ( 1UL << uxLED );
			XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
		}
		taskEXIT_CRITICAL();
	}
}