FreeRTOS/Demo/CORTEX_LPC1768_GCC_Rowley/ParTest.c

/*
 * FreeRTOS Kernel V10.3.0
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * http://www.FreeRTOS.org
 * http://aws.amazon.com/freertos
 *
 * 1 tab == 4 spaces!
 */

/* FreeRTOS.org includes. */
#include "FreeRTOS.h"

/* Demo application includes. */
#include "partest.h"

#define partstFIRST_IO			( ( unsigned long ) 0x04 )
#define partstFIO2_BITS			( ( unsigned long ) 0x0000007C )
#define partstFIO1_BITS			( ( unsigned long ) 0xB0000000 )
#define partstNUM_LEDS			( 5 )
#define partstALL_OUTPUTS_OFF	( ( unsigned long ) 0xff )

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

void vParTestInitialise( void )
{
	/* LEDs on ports 1 and 2 to output. */
	GPIO2->FIODIR  = partstFIO2_BITS;
    GPIO1->FIODIR  = partstFIO1_BITS;

	/* Start will all LEDs off. */
    GPIO2->FIOCLR = partstFIO2_BITS;
    GPIO1->FIOCLR = partstFIO1_BITS;
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned long ulLEDIn, signed long xValue )
{
unsigned long ulLED = partstFIRST_IO;

	/* Used to set and clear LEDs on FIO2. */

	if( ulLEDIn < partstNUM_LEDS )
	{
		/* Rotate to the wanted bit of port */
		ulLED <<= ( unsigned long ) ulLEDIn;

		/* Set of clear the output. */
		if( xValue )
		{
			GPIO2->FIOCLR = ulLED;
		}
		else
		{
			GPIO2->FIOSET = ulLED;
		}
	}
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned long ulLEDIn )
{
unsigned long ulLED = partstFIRST_IO, ulCurrentState;

	/* Used to toggle LEDs on FIO2. */

	if( ulLEDIn < partstNUM_LEDS )
	{
		/* Rotate to the wanted bit of port 0.  Only P10 to P13 have an LED
		attached. */
		ulLED <<= ( unsigned long ) ulLEDIn;

		/* If this bit is already set, clear it, and vice versa. */
		ulCurrentState = GPIO2->FIOPIN;
		if( ulCurrentState & ulLED )
		{
			GPIO2->FIOCLR = ulLED;
		}
		else
		{
			GPIO2->FIOSET = ulLED;
		}
	}
}
/*-----------------------------------------------------------*/

long lParTestGetLEDState( void )
{
	/* Returns the state of the LEDs on FIO1. */
	if( ( GPIO1->FIOPIN & partstFIO1_BITS ) != 0 )
	{
		return pdFALSE;
	}
	else
	{
		return pdTRUE;
	}
}
/*-----------------------------------------------------------*/

void vParTestSetLEDState( long lState )
{
	/* Used to set and clear the LEDs on FIO1. */
	if( lState != pdFALSE )
	{
		GPIO1->FIOSET = partstFIO1_BITS;
	}
	else
	{
		GPIO1->FIOCLR = partstFIO1_BITS;
	}
}
/*-----------------------------------------------------------*/