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146 lines
4.4 KiB
C
146 lines
4.4 KiB
C
/*
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FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
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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 a
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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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Alternative commercial license and support terms are also available upon
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request. See the licensing section of http://www.FreeRTOS.org for full
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license details.
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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.
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You should have received a copy of the GNU General Public License along
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with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
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Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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***************************************************************************
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* *
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* Looking for a quick start? Then check out the FreeRTOS eBook! *
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* See http://www.FreeRTOS.org/Documentation for details *
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* *
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***************************************************************************
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1 tab == 4 spaces!
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Please ensure to read the configuration and relevant port sections of the
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online documentation.
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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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Changes from V1.01:
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+ Types used updated.
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+ Add vParTestToggleLED();
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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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*/
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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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#define partstALL_OUTPUTS_OFF ( ( unsigned portSHORT) 0x00 )
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#define partstMAX_OUTPUT_LED ( ( unsigned portCHAR ) 7 )
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#define partstPORT_F_ADDR ( ( unsigned portSHORT ) 0x605 )
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#define partstPORT_DIRECTION_REG ( ( unsigned portSHORT ) 0x606 )
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#define partstPORT_F_DIR_BIT ( ( unsigned portSHORT ) 0x20 )
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/*lint -e956 File scope parameters okay here. */
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static volatile unsigned portCHAR ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
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/*lint +e956 */
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/*-----------------------------------------------------------
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* Simple parallel port IO routines.
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*-----------------------------------------------------------*/
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void vParTestInitialise( void )
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{
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unsigned portSHORT usInput;
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ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
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/* Set the direction to output for port F. */
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usInput = portINPUT_BYTE( partstPORT_DIRECTION_REG );
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usInput |= partstPORT_F_DIR_BIT;
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portOUTPUT_BYTE( partstPORT_DIRECTION_REG, usInput );
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/* Start with all outputs off. */
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portOUTPUT_BYTE( partstPORT_F_ADDR, partstALL_OUTPUTS_OFF );
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}
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/*-----------------------------------------------------------*/
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void vParTestSetLED( unsigned portBASE_TYPE uxLED, 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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portOUTPUT_BYTE( partstPORT_F_ADDR, ( unsigned ) 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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portOUTPUT_BYTE( partstPORT_F_ADDR, ( unsigned ) ucCurrentOutputValue );
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}
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xTaskResumeAll();
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}
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}
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