124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/*
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FreeRTOS V4.0.1 - Copyright (C) 2003-2006 Richard Barry.
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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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FreeRTOS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FreeRTOS; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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A special exception to the GPL can be applied should you wish 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 any proprietary components. See the licensing section
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of http://www.FreeRTOS.org for full details of how and when the exception
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can be applied.
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***************************************************************************
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See http://www.FreeRTOS.org for documentation, latest information, license
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and contact details. Please ensure to read the configuration and relevant
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port sections of the online documentation.
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***************************************************************************
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*/
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/*
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Changes from V2.0.0
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+ Use scheduler suspends in place of critical sections.
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Changes from V2.6.0
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+ Replaced the inb() and outb() functions with direct memory
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access. This allows the port to be built with the 20050414 build of
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WinAVR.
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*/
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#include "FreeRTOS.h"
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#include "task.h"
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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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#define partstALL_BITS_OUTPUT ( ( unsigned portCHAR ) 0xff )
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#define partstALL_OUTPUTS_OFF ( ( unsigned portCHAR ) 0xff )
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#define partstMAX_OUTPUT_LED ( ( unsigned portCHAR ) 7 )
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static volatile unsigned portCHAR ucCurrentOutputValue = partstALL_OUTPUTS_OFF; /*lint !e956 File scope parameters okay here. */
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/*-----------------------------------------------------------*/
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void vParTestInitialise( void )
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{
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ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
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/* Set port B direction to outputs. Start with all output off. */
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DDRB = partstALL_BITS_OUTPUT;
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PORTB = ucCurrentOutputValue;
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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 portCHAR ucBit = ( unsigned portCHAR ) 1;
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if( uxLED <= partstMAX_OUTPUT_LED )
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{
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ucBit <<= uxLED;
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}
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vTaskSuspendAll();
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{
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if( xValue == pdTRUE )
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{
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ucBit ^= ( unsigned portCHAR ) 0xff;
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ucCurrentOutputValue &= ucBit;
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}
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else
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{
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ucCurrentOutputValue |= ucBit;
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}
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PORTB = ucCurrentOutputValue;
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}
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xTaskResumeAll();
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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 portCHAR ucBit;
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if( uxLED <= partstMAX_OUTPUT_LED )
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{
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ucBit = ( ( unsigned portCHAR ) 1 ) << uxLED;
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vTaskSuspendAll();
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{
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if( ucCurrentOutputValue & ucBit )
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{
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ucCurrentOutputValue &= ~ucBit;
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}
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else
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{
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ucCurrentOutputValue |= ucBit;
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}
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PORTB = ucCurrentOutputValue;
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}
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xTaskResumeAll();
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}
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}
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