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 /* Scheduler includes. */
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76 #include "FreeRTOS.h"
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78 /* Demo includes. */
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79 #include "IntQueueTimer.h"
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80 #include "IntQueue.h"
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82 /* Library includes. */
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83 #include "hw_ints.h"
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84 #include "hw_memmap.h"
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85 #include "hw_types.h"
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86 #include "interrupt.h"
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88 #include "lmi_timer.h"
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90 #define tmrTIMER_2_FREQUENCY ( 2000UL )
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91 #define tmrTIMER_3_FREQUENCY ( 2001UL )
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93 void vInitialiseTimerForIntQueueTest( void )
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95 unsigned long ulFrequency;
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97 /* Timer 2 and 3 are utilised for this test. */
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98 SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER2 );
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99 SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER3 );
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100 TimerConfigure( TIMER2_BASE, TIMER_CFG_32_BIT_PER );
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101 TimerConfigure( TIMER3_BASE, TIMER_CFG_32_BIT_PER );
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103 /* Set the timer interrupts to be above the kernel. The interrupts are
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104 assigned different priorities so they nest with each other. */
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105 IntPrioritySet( INT_TIMER2A, configMAX_SYSCALL_INTERRUPT_PRIORITY + ( 1 << 5 ) ); /* Shift left 5 as only the top 3 bits are implemented. */
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106 IntPrioritySet( INT_TIMER3A, configMAX_SYSCALL_INTERRUPT_PRIORITY );
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108 /* Ensure interrupts do not start until the scheduler is running. */
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109 portDISABLE_INTERRUPTS();
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111 /* The rate at which the timers will interrupt. */
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112 ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_2_FREQUENCY;
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113 TimerLoadSet( TIMER2_BASE, TIMER_A, ulFrequency );
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114 IntEnable( INT_TIMER2A );
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115 TimerIntEnable( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
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117 /* The rate at which the timers will interrupt. */
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118 ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_3_FREQUENCY;
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119 TimerLoadSet( TIMER3_BASE, TIMER_A, ulFrequency );
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120 IntEnable( INT_TIMER3A );
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121 TimerIntEnable( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
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123 /* Enable both timers. */
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124 TimerEnable( TIMER2_BASE, TIMER_A );
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125 TimerEnable( TIMER3_BASE, TIMER_A );
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127 /*-----------------------------------------------------------*/
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129 void vT2InterruptHandler( void )
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131 TimerIntClear( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
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132 portEND_SWITCHING_ISR( xFirstTimerHandler() );
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134 /*-----------------------------------------------------------*/
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136 void vT3InterruptHandler( void )
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138 TimerIntClear( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
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139 portEND_SWITCHING_ISR( xSecondTimerHandler() );
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