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jeremybenn |
/*
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FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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* + Wanting to learn FreeRTOS or multitasking in general quickly *
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* + Looking for basic training, *
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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* then take a look at the FreeRTOS books - available as PDF or paperback *
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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* and 8pm GMT (although please allow up to 24 hours in case of *
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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***NOTE*** The exception to the GPL is included to allow you to distribute
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a combined work that includes FreeRTOS without being obliged to provide the
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source code for proprietary components outside of the FreeRTOS kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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*/
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/*-----------------------------------------------------------
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* Simple parallel port IO routines.
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*-----------------------------------------------------------*/
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Demo includes. */
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#include "partest.h"
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#define partstTOTAL_NUM_LEDs 16
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#define partstNUM_LEDs_PER_DISPLAY 8
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volatile unsigned char *pucDisplayOutput[ 2 ] = { ( unsigned portCHAR * ) 3, ( unsigned portCHAR * ) 5 };
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void vParTestInitialise( void )
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{
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/* In this case all the initialisation is performed in prvSetupHardware()
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in main.c. */
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}
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/*-----------------------------------------------------------*/
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void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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{
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unsigned portBASE_TYPE uxLEDMask = 0x01;
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if( uxLED < partstNUM_LEDs_PER_DISPLAY )
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{
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uxLEDMask <<= uxLED;
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taskENTER_CRITICAL();
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{
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if( xValue )
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{
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*pucDisplayOutput[ 0 ] &= ~uxLEDMask;
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}
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else
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{
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*pucDisplayOutput[ 0 ] |= uxLEDMask;
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}
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}
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taskEXIT_CRITICAL();
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}
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else if( uxLED < partstTOTAL_NUM_LEDs )
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{
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uxLED -= partstNUM_LEDs_PER_DISPLAY;
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uxLEDMask <<= uxLED;
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taskENTER_CRITICAL();
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{
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if( xValue )
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{
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*pucDisplayOutput[ 1 ] &= ~uxLEDMask;
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}
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else
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{
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*pucDisplayOutput[ 1 ] |= uxLEDMask;
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}
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}
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taskEXIT_CRITICAL();
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}
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}
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/*-----------------------------------------------------------*/
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void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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{
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unsigned portBASE_TYPE uxLEDMask = 0x01;
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if( uxLED < partstNUM_LEDs_PER_DISPLAY )
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{
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uxLEDMask <<= uxLED;
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taskENTER_CRITICAL();
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{
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if( *pucDisplayOutput[ 0 ] & uxLEDMask )
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{
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*pucDisplayOutput[ 0 ] &= ~uxLEDMask;
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}
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else
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{
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*pucDisplayOutput[ 0 ] |= uxLEDMask;
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}
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}
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taskEXIT_CRITICAL();
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}
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else if( uxLED < partstTOTAL_NUM_LEDs )
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{
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uxLED -= partstNUM_LEDs_PER_DISPLAY;
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uxLEDMask <<= uxLED;
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taskENTER_CRITICAL();
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{
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if( *pucDisplayOutput[ 1 ] & uxLEDMask )
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{
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*pucDisplayOutput[ 1 ] &= ~uxLEDMask;
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}
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else
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{
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*pucDisplayOutput[ 1 ] |= uxLEDMask;
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}
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}
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taskEXIT_CRITICAL();
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}
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}
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