2 FreeRTOS V7.3.0 - Copyright (C) 2012 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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32 >>>NOTE<<< The modification to the GPL is included to allow you to
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33 distribute a combined work that includes FreeRTOS without being obliged to
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34 provide the source code for proprietary components outside of the FreeRTOS
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35 kernel. FreeRTOS is distributed in the hope that it will be useful, but
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36 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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37 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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38 more details. You should have received a copy of the GNU General Public
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39 License and the FreeRTOS license exception along with FreeRTOS; if not it
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40 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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41 by writing to Richard Barry, contact details for whom are available on the
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46 ***************************************************************************
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48 * Having a problem? Start by reading the FAQ "My application does *
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49 * not run, what could be wrong?" *
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51 * http://www.FreeRTOS.org/FAQHelp.html *
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53 ***************************************************************************
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56 http://www.FreeRTOS.org - Documentation, training, latest versions, license
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57 and contact details.
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59 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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60 including FreeRTOS+Trace - an indispensable productivity tool.
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62 Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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63 the code with commercial support, indemnification, and middleware, under
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64 the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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65 provide a safety engineered and independently SIL3 certified version under
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66 the SafeRTOS brand: http://www.SafeRTOS.com.
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69 /* Scheduler includes. */
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70 #include "FreeRTOS.h"
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72 /* Demo includes. */
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73 #include "IntQueueTimer.h"
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74 #include "IntQueue.h"
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76 /* Library includes. */
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77 #include "hw_ints.h"
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78 #include "hw_memmap.h"
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79 #include "hw_types.h"
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80 #include "interrupt.h"
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82 #include "lmi_timer.h"
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84 #define tmrTIMER_2_FREQUENCY ( 2000UL )
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85 #define tmrTIMER_3_FREQUENCY ( 2001UL )
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87 void vInitialiseTimerForIntQueueTest( void )
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89 unsigned long ulFrequency;
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91 /* Timer 2 and 3 are utilised for this test. */
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92 SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER2 );
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93 SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER3 );
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94 TimerConfigure( TIMER2_BASE, TIMER_CFG_32_BIT_PER );
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95 TimerConfigure( TIMER3_BASE, TIMER_CFG_32_BIT_PER );
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97 /* Set the timer interrupts to be above the kernel. The interrupts are
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98 assigned different priorities so they nest with each other. */
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99 IntPrioritySet( INT_TIMER2A, configMAX_SYSCALL_INTERRUPT_PRIORITY + ( 1 << 5 ) ); /* Shift left 5 as only the top 3 bits are implemented. */
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100 IntPrioritySet( INT_TIMER3A, configMAX_SYSCALL_INTERRUPT_PRIORITY );
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102 /* Ensure interrupts do not start until the scheduler is running. */
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103 portDISABLE_INTERRUPTS();
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105 /* The rate at which the timers will interrupt. */
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106 ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_2_FREQUENCY;
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107 TimerLoadSet( TIMER2_BASE, TIMER_A, ulFrequency );
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108 IntEnable( INT_TIMER2A );
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109 TimerIntEnable( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
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111 /* The rate at which the timers will interrupt. */
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112 ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_3_FREQUENCY;
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113 TimerLoadSet( TIMER3_BASE, TIMER_A, ulFrequency );
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114 IntEnable( INT_TIMER3A );
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115 TimerIntEnable( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
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117 /* Enable both timers. */
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118 TimerEnable( TIMER2_BASE, TIMER_A );
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119 TimerEnable( TIMER3_BASE, TIMER_A );
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121 /*-----------------------------------------------------------*/
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123 void vT2InterruptHandler( void )
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125 TimerIntClear( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
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126 portEND_SWITCHING_ISR( xFirstTimerHandler() );
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128 /*-----------------------------------------------------------*/
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130 void vT3InterruptHandler( void )
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132 TimerIntClear( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
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133 portEND_SWITCHING_ISR( xSecondTimerHandler() );
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