2 FreeRTOS.org V5.3.1 - Copyright (C) 2003-2009 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License (version 2) as published
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8 by the Free Software Foundation and modified by the FreeRTOS exception.
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9 **NOTE** The exception to the GPL is included to allow you to distribute a
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10 combined work that includes FreeRTOS.org without being obliged to provide
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11 the source code for any proprietary components. Alternative commercial
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12 license and support terms are also available upon request. See the
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13 licensing section of http://www.FreeRTOS.org for full details.
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15 FreeRTOS.org is distributed in the hope that it will be useful, but WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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20 You should have received a copy of the GNU General Public License along
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21 with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59
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22 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 ***************************************************************************
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27 * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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29 * This is a concise, step by step, 'hands on' guide that describes both *
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30 * general multitasking concepts and FreeRTOS specifics. It presents and *
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31 * explains numerous examples that are written using the FreeRTOS API. *
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32 * Full source code for all the examples is provided in an accompanying *
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35 ***************************************************************************
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39 Please ensure to read the configuration and relevant port sections of the
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40 online documentation.
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42 http://www.FreeRTOS.org - Documentation, latest information, license and
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45 http://www.SafeRTOS.com - A version that is certified for use in safety
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48 http://www.OpenRTOS.com - Commercial support, development, porting,
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49 licensing and training services.
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55 + Types used updated.
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56 + Add vParTestToggleLED();
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61 + Use scheduler suspends in place of critical sections.
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64 #include "FreeRTOS.h"
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65 #include "partest.h"
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68 #define partstALL_OUTPUTS_OFF ( ( unsigned portCHAR ) 0x00 )
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69 #define partstMAX_OUTPUT_LED ( ( unsigned portCHAR ) 7 )
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71 /*lint -e956 File scope parameters okay here. */
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72 static unsigned portSHORT usPortAddress = partstDEFAULT_PORT_ADDRESS;
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73 static volatile unsigned portCHAR ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
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77 /*-----------------------------------------------------------
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78 * Simple parallel port IO routines
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79 *-----------------------------------------------------------*/
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81 void vParTestInitialise( void )
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83 ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
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85 portOUTPUT_BYTE( usPortAddress, ( unsigned ) partstALL_OUTPUTS_OFF );
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87 /*-----------------------------------------------------------*/
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89 void vParTestSetLED( unsigned portBASE_TYPE uxLED, portBASE_TYPE xValue )
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91 unsigned portCHAR ucBit = ( unsigned portCHAR ) 1;
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93 if( uxLED <= partstMAX_OUTPUT_LED )
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100 if( xValue == pdTRUE )
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102 ucBit ^= ( unsigned portCHAR ) 0xff;
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103 ucCurrentOutputValue &= ucBit;
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107 ucCurrentOutputValue |= ucBit;
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110 portOUTPUT_BYTE( usPortAddress, ( unsigned ) ucCurrentOutputValue );
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114 /*-----------------------------------------------------------*/
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116 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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118 unsigned portCHAR ucBit;
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120 if( uxLED <= partstMAX_OUTPUT_LED )
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122 ucBit = ( ( unsigned portCHAR ) 1 ) << uxLED;
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126 if( ucCurrentOutputValue & ucBit )
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128 ucCurrentOutputValue &= ~ucBit;
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132 ucCurrentOutputValue |= ucBit;
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135 portOUTPUT_BYTE( usPortAddress, ( unsigned ) ucCurrentOutputValue );
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