partest.c

FreeRTOSV4.1.0 安裝文件 FreeRTOS 是一个源码公开的免费的嵌入式实时操作系统

/*
	FreeRTOS.org V4.1.0 - Copyright (C) 2003-2006 Richard Barry.

	This file is part of the FreeRTOS.org distribution.

	FreeRTOS.org is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	FreeRTOS.org 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.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with FreeRTOS.org; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

	A special exception to the GPL can be applied should you wish to distribute
	a combined work that includes FreeRTOS.org, without being obliged to provide
	the source code for any proprietary components.  See the licensing section 
	of http://www.FreeRTOS.org for full details of how and when the exception
	can be applied.

	***************************************************************************
	See http://www.FreeRTOS.org for documentation, latest information, license 
	and contact details.  Please ensure to read the configuration and relevant 
	port sections of the online documentation.
	***************************************************************************
*/

/* 
Changes from V3.0.0

Changes from V3.0.1
*/

/* Scheduler include files. */
#include "FreeRTOS.h"
#include <task.h>

#include "partest.h"

/*-----------------------------------------------------------
 * Simple parallel port IO routines for the FED 40pin demo board.
 * The four LED's are connected to D4 to D7.
 *-----------------------------------------------------------*/

#define partstBIT_AS_OUTPUT			( ( unsigned portSHORT ) 0 )
#define partstSET_OUTPUT			( ( unsigned portSHORT ) 1 )
#define partstCLEAR_OUTPUT			( ( unsigned portSHORT ) 0 )

#define partstENABLE_GENERAL_IO		( ( unsigned portCHAR ) 7 )

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

void vParTestInitialise( void )
{
	/* Set the top four bits of port D to output. */
	bTRD7		= partstBIT_AS_OUTPUT;
	bTRD6		= partstBIT_AS_OUTPUT;
	bTRD5		= partstBIT_AS_OUTPUT;
	bTRD4		= partstBIT_AS_OUTPUT;

	/* Start with all bits off. */
	bRD7		= partstCLEAR_OUTPUT;
	bRD6		= partstCLEAR_OUTPUT;
	bRD5		= partstCLEAR_OUTPUT;
	bRD4		= partstCLEAR_OUTPUT;

	/* Enable the driver. */
	ADCON1		= partstENABLE_GENERAL_IO;
	bTRE2		= partstBIT_AS_OUTPUT;
	bRE2		= partstSET_OUTPUT;	
}
/*-----------------------------------------------------------*/

void vParTestSetLED( unsigned portCHAR ucLED, portCHAR cValue )
{
	/* We are only using the top nibble, so LED 0 corresponds to bit 4. */	
	vTaskSuspendAll();
	{
		switch( ucLED )
		{
			case 3	:	bRD7 = ( portSHORT ) cValue;
						break;
			case 2	:	bRD6 = ( portSHORT ) cValue;
						break;
			case 1	:	bRD5 = ( portSHORT ) cValue;
						break;
			case 0	:	bRD4 = ( portSHORT ) cValue;
						break;
			default	:	/* There are only 4 LED's. */
						break;
		}
	}
	xTaskResumeAll();
}
/*-----------------------------------------------------------*/

void vParTestToggleLED( unsigned portCHAR ucLED )
{
	/* We are only using the top nibble, so LED 0 corresponds to bit 4. */	
	vTaskSuspendAll();
	{
		switch( ucLED )
		{
			case 3	:	bRD7 = !bRD7;
						break;
			case 2	:	bRD6 = !bRD6;
						break;
			case 1	:	bRD5 = !bRD5;
						break;
			case 0	:	bRD4 = !bRD4 );
						break;
			default	:	/* There are only 4 LED's. */
						break;
		}
	}
	xTaskResumeAll();
}