2 FreeRTOS V7.4.2 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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5 http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS tutorial books are available in pdf and paperback. *
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10 * Complete, revised, and edited pdf reference manuals are also *
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13 * Purchasing FreeRTOS documentation will not only help you, by *
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14 * ensuring you get running as quickly as possible and with an *
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15 * in-depth knowledge of how to use FreeRTOS, it will also help *
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16 * the FreeRTOS project to continue with its mission of providing *
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17 * professional grade, cross platform, de facto standard solutions *
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18 * for microcontrollers - completely free of charge! *
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20 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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22 * Thank you for using FreeRTOS, and thank you for your support! *
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24 ***************************************************************************
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27 This file is part of the FreeRTOS distribution.
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29 FreeRTOS is free software; you can redistribute it and/or modify it under
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30 the terms of the GNU General Public License (version 2) as published by the
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31 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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33 >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
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34 distribute a combined work that includes FreeRTOS without being obliged to
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35 provide the source code for proprietary components outside of the FreeRTOS
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38 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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39 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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40 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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41 details. You should have received a copy of the GNU General Public License
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42 and the FreeRTOS license exception along with FreeRTOS; if not it can be
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43 viewed here: http://www.freertos.org/a00114.html and also obtained by
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44 writing to Real Time Engineers Ltd., contact details for whom are available
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45 on the FreeRTOS WEB site.
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49 ***************************************************************************
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51 * Having a problem? Start by reading the FAQ "My application does *
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52 * not run, what could be wrong?" *
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54 * http://www.FreeRTOS.org/FAQHelp.html *
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56 ***************************************************************************
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59 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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60 license and Real Time Engineers Ltd. contact details.
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62 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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63 including FreeRTOS+Trace - an indispensable productivity tool, and our new
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64 fully thread aware and reentrant UDP/IP stack.
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66 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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67 Integrity Systems, who sell the code with commercial support,
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68 indemnification and middleware, under the OpenRTOS brand.
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70 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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71 engineered and independently SIL3 certified version for use in safety and
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72 mission critical applications that require provable dependability.
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75 /* Simple LED IO functions. LED 0 is toggled by a timer every half second. */
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77 /* FreeRTOS includes. */
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78 #include "FreeRTOS.h"
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81 /* Library includes. */
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82 #include "lpc18xx_gpio.h"
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83 #include "lpc18xx_scu.h"
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84 #include "lpc18xx_cgu.h"
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86 #define ledTOGGLE_RATE ( 500 / portTICK_RATE_MS )
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88 #define ledLED0_PORT 1
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89 #define ledLED0_BIT ( 1UL << 11UL )
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91 #define ledLED1_PORT 2
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92 #define ledLED1_BIT ( 1UL << 12UL )
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95 * Toggles an LED just to show the application is running.
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97 static void prvLEDToggleTimerCallback( xTimerHandle xTimer );
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99 /*-----------------------------------------------------------*/
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101 void vLEDsInitialise( void )
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103 static xTimerHandle xLEDToggleTimer = NULL;
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105 /* Set the LED pin-muxing and configure as output. */
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106 scu_pinmux( 0x2 , 11, MD_PUP, FUNC0 );
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107 scu_pinmux( 0x2 , 12, MD_PUP, FUNC0 );
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108 GPIO_SetDir( ledLED0_PORT, ledLED0_BIT, 1 );
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109 GPIO_SetDir( ledLED1_PORT, ledLED1_BIT, 1 );
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111 /* Create the timer used to toggle LED0. */
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112 xLEDToggleTimer = xTimerCreate( ( const int8_t * ) "LEDTmr", /* Just a text name to associate with the timer, useful for debugging, but not used by the kernel. */
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113 ledTOGGLE_RATE, /* The period of the timer. */
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114 pdTRUE, /* This timer will autoreload, so uxAutoReload is set to pdTRUE. */
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115 NULL, /* The timer ID is not used, so can be set to NULL. */
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116 prvLEDToggleTimerCallback ); /* The callback function executed each time the timer expires. */
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118 /* Sanity check that the timer was actually created. */
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119 configASSERT( xLEDToggleTimer );
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121 /* Start the timer. If this is called before the scheduler is started then
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122 the block time will automatically get changed to 0 (from portMAX_DELAY). */
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123 xTimerStart( xLEDToggleTimer, portMAX_DELAY );
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125 /*-----------------------------------------------------------*/
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127 static void prvLEDToggleTimerCallback( xTimerHandle xTimer )
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129 static uint8_t ucState = 0;
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131 /* Remove compiler warnings. */
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134 /* Just toggle an LED to show the program is running. */
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137 GPIO_SetValue( ledLED0_PORT, ledLED0_BIT );
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141 GPIO_ClearValue( ledLED0_PORT, ledLED0_BIT );
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144 ucState = !ucState;
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