FreeRTOS-Kernel/Demo/CORTEX_LM3S102_KEIL/ParTest/ParTest.c

/*
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    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.
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*/

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

/*
*/


#include "FreeRTOS.h"
#include "task.h"
#include "partest.h"

#include "pdc.h"

#define partstPINS	(GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 Z | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7)

#define partstALL_OUTPUTS_OFF	( ( unsigned char ) 0x00 )
#define partstMAX_OUTPUT_LED	( ( unsigned char ) 8 )

static volatile unsigned char ucOutputValue = partstALL_OUTPUTS_OFF;

void vParTestInitialise( void )
{
	PDCInit();
	PDCWrite( PDC_LED, ucOutputValue );
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
unsigned char ucBit = ( unsigned char ) 1;

	vTaskSuspendAll();
	{
		if( uxLED < partstMAX_OUTPUT_LED )
		{
			ucBit = ( ( unsigned char ) 1 ) << uxLED;

			if( xValue == pdFALSE )
			{
				ucBit ^= ( unsigned char ) 0xff;
				ucOutputValue &= ucBit;
			}
			else
			{
				ucOutputValue |= ucBit;
			}

			PDCWrite( PDC_LED, ucOutputValue );
		}	
	}
	xTaskResumeAll();
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned char ucBit;

	vTaskSuspendAll();
	{
		if( uxLED < partstMAX_OUTPUT_LED )
		{
			ucBit = ( ( unsigned char ) 1 ) << uxLED;

			if( ucOutputValue & ucBit )
			{
				ucOutputValue &= ~ucBit;
			}
			else
			{
				ucOutputValue |= ucBit;
			}

			PDCWrite( PDC_LED, ucOutputValue );
		}
	}
	xTaskResumeAll();
}