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180 lines
6.3 KiB
C
180 lines
6.3 KiB
C
/*
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FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
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All rights reserved
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that has become a de facto standard. *
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* *
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* Help yourself get started quickly and support the FreeRTOS *
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* project by purchasing a FreeRTOS tutorial book, reference *
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* manual, or both from: http://www.FreeRTOS.org/Documentation *
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* *
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* Thank you! *
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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 modification 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
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>>! the source code for proprietary components outside of the FreeRTOS
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>>! kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available from the following
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link: http://www.freertos.org/a00114.html
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1 tab == 4 spaces!
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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong?" *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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license and Real Time Engineers Ltd. contact details.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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1 tab == 4 spaces!
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*/
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/* Scheduler include files. */
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#include "FreeRTOS.h"
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#include "portable.h"
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/* Demo application include files. */
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#include "partest.h"
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/*-----------------------------------------------------------
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* Simple parallel port IO routines.
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*
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* This is for the demo application which uses port 2 for LED outputs.
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*-----------------------------------------------------------*/
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/* Value for the LED to be off. */
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#define partstLED_OUTPUTS ( ( unsigned char ) 0xff )
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/* P2.0 is not used as an output so there are only 7 LEDs on port 2. */
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#define partstMAX_LEDs ( 7 )
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#define partstALL_OUTPUTS_OFF ( ( unsigned char ) 0 )
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/* Maps the LED outputs used by the standard demo application files to
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convenient outputs for the EDK2329. Mainly this insures that the LED
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used by the Check task is one of the on board LEDs so the demo can be
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executed on an EDK without any modification. */
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static inline unsigned char prvMapLED( unsigned portBASE_TYPE uxLED );
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/*-----------------------------------------------------------*/
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void vParTestInitialise( void )
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{
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/* LED's are connected to port 2. P2.1 and P2.2 are built onto the EDK.
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P2.3 to P2.7 are soldered onto the expansion port. */
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P2DDR = partstLED_OUTPUTS;
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P2DR = partstALL_OUTPUTS_OFF;
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}
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/*-----------------------------------------------------------*/
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/*
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* Described at the top of the file.
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*/
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static inline unsigned char prvMapLED( unsigned portBASE_TYPE uxLED )
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{
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switch( uxLED )
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{
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case 0 : return ( unsigned char ) 2;
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case 1 : return ( unsigned char ) 3;
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case 2 : return ( unsigned char ) 4;
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case 3 : return ( unsigned char ) 5;
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case 4 : return ( unsigned char ) 6;
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case 5 : return ( unsigned char ) 0;
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case 6 : return ( unsigned char ) 1;
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default : return 0;
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}
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}
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/*-----------------------------------------------------------*/
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/*
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* Turn an LED on or off.
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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 char ucLED;
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if( uxLED < partstMAX_LEDs )
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{
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ucLED = prvMapLED( uxLED );
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/* Set a bit in the required LED position. LED 0 is bit 1. */
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ucLED = ( unsigned char ) 1 << ( ucLED + 1 );
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if( xValue )
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{
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portENTER_CRITICAL();
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P2DR |= ucLED;
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portEXIT_CRITICAL();
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}
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else
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{
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portENTER_CRITICAL();
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P2DR &= ~ucLED;
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portEXIT_CRITICAL();
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}
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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 char ucLED;
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if( uxLED < partstMAX_LEDs )
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{
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ucLED = prvMapLED( uxLED );
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/* Set a bit in the required LED position. LED 0 is bit 1. */
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ucLED = ( unsigned char ) 1 << ( ucLED + 1 );
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portENTER_CRITICAL();
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{
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if( P2DR & ucLED )
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{
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P2DR &= ~ucLED;
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}
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else
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{
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P2DR |= ucLED;
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}
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}
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portEXIT_CRITICAL();
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}
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}
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