FreeRTOS-Kernel/Demo/NiosII_CycloneIII_DBC3C40_GCC/RTOSDemo/ParTest/ParTest.c

/*
    FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.

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*/

/*-----------------------------------------------------------
 * Simple parallel port IO routines.
 *-----------------------------------------------------------*/


/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"

/* Demo app includes. */
#include "system.h"
#include "altera_avalon_pio_regs.h"
#include "partest.h"

/*---------------------------------------------------------------------------*/

#define partstNUM_LEDS			( 8 )

/*---------------------------------------------------------------------------*/

static unsigned long ulLedStates;

/*---------------------------------------------------------------------------*/

void vParTestInitialise( void )
{
	IOWR_ALTERA_AVALON_PIO_DIRECTION( LED_PIO_BASE, ALTERA_AVALON_PIO_DIRECTION_OUTPUT );
	ulLedStates = 0;    
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
	if( uxLED < partstNUM_LEDS )
	{
		taskENTER_CRITICAL();
		{
			if ( xValue > 0 )
			{
				ulLedStates |= 1 << uxLED;
			}
			else
			{
				ulLedStates &= ~( 1 << uxLED );
			}
			IOWR_ALTERA_AVALON_PIO_DATA( LED_PIO_BASE, ulLedStates );
		}
		taskEXIT_CRITICAL();
	}
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
	if( uxLED < partstNUM_LEDS )
	{
		taskENTER_CRITICAL();
		{
			vParTestSetLED( uxLED, !( ulLedStates & ( 1 << uxLED ) ) );
		}	
		taskEXIT_CRITICAL();
	}
}
/*-----------------------------------------------------------*/