/*
    FreeRTOS V9.0.0rc2 - Copyright (C) 2016 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

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
     *    robust, strictly quality controlled, supported, and cross          *
     *    platform software that is more than just the market leader, it     *
     *    is the industry's de facto standard.                               *
     *                                                                       *
     *    Help yourself get started quickly while simultaneously helping     *
     *    to support the FreeRTOS project by purchasing a FreeRTOS           *
     *    tutorial book, reference manual, or both:                          *
     *    http://www.FreeRTOS.org/Documentation                              *
     *                                                                       *
    ***************************************************************************

    http://www.FreeRTOS.org/FAQHelp.html - Having a problem?  Start by reading
    the FAQ page "My application does not run, what could be wrong?".  Have you
    defined configASSERT()?

    http://www.FreeRTOS.org/support - In return for receiving this top quality
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    FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
    Ltd, and the world's leading authority on the world's leading RTOS.

    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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    compatible FAT file system, and our tiny thread aware UDP/IP stack.

    http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
    Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

    http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
    Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and commercial middleware.

    http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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    1 tab == 4 spaces!
*/

/* Scheduler includes. */
#include "FreeRTOS.h"
#include "portable.h"

/* Demo app includes. */
#include "partest.h"

/* Hardware specific definitions. */
#include "AT91R40008.h"
#include "pio.h"
#include "aic.h"

#define partstNUM_LEDS			( 8 )
#define partstALL_OUTPUTS_OFF	( ( unsigned long ) ~(0xFFFFFFFF << partstNUM_LEDS) )

static unsigned long ulLEDReg;

/*-----------------------------------------------------------
 * Simple parallel port IO routines.
 *-----------------------------------------------------------*/

static void SetLeds (unsigned int leds)
{
unsigned long ulPIOSetReg, ulPIOClearReg;

	/* LEDs are grouped in different port bits: P3-P6 and P16-P19.
	A port bit set to '0' turns an LED on, '1' turns it off. */

	ulPIOSetReg = ( (leds & 0xF) << 16 ) | ( (leds & 0xF0) >> 1 );
	ulPIOClearReg = (~ulPIOSetReg) & 0x000F0078;

	AT91C_BASE_PIO->PIO_SODR = ulPIOSetReg;
	AT91C_BASE_PIO->PIO_CODR = ulPIOClearReg;
}
/*-----------------------------------------------------------*/

void vParTestInitialise( void )
{
	/* This is performed from main() as the io bits are shared with other setup
	functions.  Ensure the outputs are off to start. */
	ulLEDReg = partstALL_OUTPUTS_OFF;  

	/* Enable clock to PIO... */
	AT91C_BASE_PS->PS_PCER = AT91C_PS_PIO;

	/* Enable all 8 LEDs and the four switches to be controlled by PIO... */
	AT91C_BASE_PIO->PIO_PER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19 | P1 | P2 | P9 | P12;

	/* Configure all LED PIO lines for output... */
	AT91C_BASE_PIO->PIO_OER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19;

	/* Configure all switch PIO lines for input... */
	AT91C_BASE_PIO->PIO_ODR = P1 | P2 | P9 | P12;

	/* Set initial state of LEDs. */
	SetLeds( ulLEDReg );
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
	/* Switch an LED on or off as requested. */
	if (uxLED < partstNUM_LEDS)
	{
		if( xValue )
		{
			ulLEDReg &= ~(1 << uxLED);
		}
		else
		{
			ulLEDReg |= (1 << uxLED);
		}

		SetLeds( ulLEDReg );
	}
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
	/* Toggle the state of the requested LED. */
	if (uxLED < partstNUM_LEDS)
	{
		ulLEDReg ^= ( 1 << uxLED );
		SetLeds( ulLEDReg );
	}
}