2 FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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5 ***************************************************************************
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7 * FreeRTOS tutorial books are available in pdf and paperback. *
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8 * Complete, revised, and edited pdf reference manuals are also *
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11 * Purchasing FreeRTOS documentation will not only help you, by *
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12 * ensuring you get running as quickly as possible and with an *
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13 * in-depth knowledge of how to use FreeRTOS, it will also help *
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14 * the FreeRTOS project to continue with its mission of providing *
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15 * professional grade, cross platform, de facto standard solutions *
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16 * for microcontrollers - completely free of charge! *
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18 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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20 * Thank you for using FreeRTOS, and thank you for your support! *
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22 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 >>>NOTE<<< The modification to the GPL is included to allow you to
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31 distribute a combined work that includes FreeRTOS without being obliged to
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32 provide the source code for proprietary components outside of the FreeRTOS
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33 kernel. FreeRTOS is distributed in the hope that it will be useful, but
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34 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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35 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 http://www.FreeRTOS.org - Documentation, latest information, license and
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47 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 http://www.OpenRTOS.com - Commercial support, development, porting,
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51 licensing and training services.
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54 /*-----------------------------------------------------------
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55 * Simple parallel port IO routines.
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56 *-----------------------------------------------------------*/
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58 /* Kernel includes. */
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59 #include "FreeRTOS.h"
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61 /* Demo application includes. */
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62 #include "partest.h"
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64 /* Library includes. */
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67 #define partstMAX_LED 4
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69 /*-----------------------------------------------------------*/
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71 static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL;
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72 static unsigned char ucGPIOState = 0U;
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74 static XGpio xOutputGPIOInstance;
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77 * Setup the IO for the LED outputs.
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79 void vParTestInitialise( void )
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81 portBASE_TYPE xStatus;
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82 const unsigned char ucSetToOutput = 0U;
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84 /* Initialise the GPIO for the LEDs. */
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85 xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID );
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86 if( xStatus == XST_SUCCESS )
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88 /* All bits on this channel are going to be outputs (LEDs). */
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89 XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput );
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91 /* Start with all LEDs off. */
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93 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
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96 configASSERT( xStatus == XST_SUCCESS );
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98 /*-----------------------------------------------------------*/
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100 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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102 unsigned char ucLED = 1U;
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104 if( uxLED < partstMAX_LED )
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106 ucLED <<= ( unsigned char ) uxLED;
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108 portENTER_CRITICAL();
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110 if( xValue == pdFALSE )
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112 ucGPIOState &= ~ucLED;
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116 ucGPIOState |= ucLED;
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118 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
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120 portEXIT_CRITICAL();
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123 /*-----------------------------------------------------------*/
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125 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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127 unsigned char ucLED = 1U;
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129 if( uxLED < partstMAX_LED )
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131 ucLED <<= ( unsigned char ) uxLED;
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133 portENTER_CRITICAL();
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135 if( ( ucGPIOState & ucLED ) != 0 )
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137 ucGPIOState &= ~ucLED;
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141 ucGPIOState |= ucLED;
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144 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
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146 portEXIT_CRITICAL();
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