2 FreeRTOS V7.1.1 - Copyright (C) 2012 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 ***************************************************************************
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46 * Having a problem? Start by reading the FAQ "My application does *
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47 * not run, what could be wrong? *
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49 * http://www.FreeRTOS.org/FAQHelp.html *
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51 ***************************************************************************
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54 http://www.FreeRTOS.org - Documentation, training, latest information,
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55 license and contact details.
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57 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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58 including FreeRTOS+Trace - an indispensable productivity tool.
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60 Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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61 the code with commercial support, indemnification, and middleware, under
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62 the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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63 provide a safety engineered and independently SIL3 certified version under
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64 the SafeRTOS brand: http://www.SafeRTOS.com.
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67 /*-----------------------------------------------------------
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68 * Simple digital IO routines.
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69 *-----------------------------------------------------------*/
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71 /* Kernel includes. */
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72 #include "FreeRTOS.h"
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74 /* Demo application includes. */
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75 #include "partest.h"
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77 /* Library includes. */
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80 /* The hardware design that accompanies this demo project has four LED
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82 #define partstMAX_LED 4
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84 /*-----------------------------------------------------------*/
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86 /* A hardware specific constant required to use the Xilinx driver library. */
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87 static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL;
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89 /* The current state of the output port. */
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90 static unsigned char ucGPIOState = 0U;
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92 /* Structure that hold the state of the ouptut peripheral used by this demo.
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93 This is used by the Xilinx peripheral driver API functions. */
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94 static XGpio xOutputGPIOInstance;
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97 * Setup the IO for the LED outputs.
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99 void vParTestInitialise( void )
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101 portBASE_TYPE xStatus;
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102 const unsigned char ucSetToOutput = 0U;
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104 /* Initialise the GPIO for the LEDs. */
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105 xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID );
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106 if( xStatus == XST_SUCCESS )
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108 /* All bits on this channel are going to be outputs (LEDs). */
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109 XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput );
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111 /* Start with all LEDs off. */
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113 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
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116 configASSERT( xStatus == XST_SUCCESS );
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118 /*-----------------------------------------------------------*/
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120 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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122 unsigned char ucLED = 1U;
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124 /* Only attempt to set the LED if it is in range. */
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125 if( uxLED < partstMAX_LED )
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127 ucLED <<= ( unsigned char ) uxLED;
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129 portENTER_CRITICAL();
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131 if( xValue == pdFALSE )
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133 ucGPIOState &= ~ucLED;
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137 ucGPIOState |= ucLED;
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139 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
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141 portEXIT_CRITICAL();
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144 /*-----------------------------------------------------------*/
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146 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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148 unsigned char ucLED = 1U;
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150 /* Only attempt to toggle the LED if it is in range. */
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151 if( uxLED < partstMAX_LED )
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153 ucLED <<= ( unsigned char ) uxLED;
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155 portENTER_CRITICAL();
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157 if( ( ucGPIOState & ucLED ) != 0 )
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159 ucGPIOState &= ~ucLED;
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163 ucGPIOState |= ucLED;
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166 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
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168 portEXIT_CRITICAL();
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