2 FreeRTOS.org V5.0.2 - Copyright (C) 2003-2008 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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11 FreeRTOS.org is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with FreeRTOS.org; if not, write to the Free Software
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 A special exception to the GPL can be applied should you wish to distribute
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21 a combined work that includes FreeRTOS.org, without being obliged to provide
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22 the source code for any proprietary components. See the licensing section
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23 of http://www.FreeRTOS.org for full details of how and when the exception
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26 ***************************************************************************
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27 ***************************************************************************
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29 * SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
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30 * and even write all or part of your application on your behalf. *
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31 * See http://www.OpenRTOS.com for details of the services we provide to *
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32 * expedite your project. *
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34 ***************************************************************************
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35 ***************************************************************************
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37 Please ensure to read the configuration and relevant port sections of the
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38 online documentation.
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40 http://www.FreeRTOS.org - Documentation, latest information, license and
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43 http://www.SafeRTOS.com - A version that is certified for use in safety
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46 http://www.OpenRTOS.com - Commercial support, development, porting,
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47 licensing and training services.
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50 /* Scheduler includes. */
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51 #include "FreeRTOS.h"
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53 /* Demo includes. */
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54 #include "IntQueueTimer.h"
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55 #include "IntQueue.h"
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57 /* Library includes. */
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58 #include "hw_ints.h"
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59 #include "hw_memmap.h"
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60 #include "hw_types.h"
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61 #include "interrupt.h"
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63 #include "lmi_timer.h"
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65 #define tmrTIMER_2_FREQUENCY ( 2000UL )
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66 #define tmrTIMER_3_FREQUENCY ( 2001UL )
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68 void vInitialiseTimerForIntQueueTest( void )
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70 unsigned long ulFrequency;
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72 /* Timer 2 and 3 are utilised for this test. */
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73 SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER2 );
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74 SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER3 );
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75 TimerConfigure( TIMER2_BASE, TIMER_CFG_32_BIT_PER );
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76 TimerConfigure( TIMER3_BASE, TIMER_CFG_32_BIT_PER );
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78 /* Set the timer interrupts to be above the kernel. The interrupts are
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79 assigned different priorities so they nest with each other. */
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80 IntPrioritySet( INT_TIMER2A, configMAX_SYSCALL_INTERRUPT_PRIORITY - 1 );
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81 IntPrioritySet( INT_TIMER3A, configMAX_SYSCALL_INTERRUPT_PRIORITY );
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83 /* Ensure interrupts do not start until the scheduler is running. */
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84 portDISABLE_INTERRUPTS();
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86 /* The rate at which the timers will interrupt. */
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87 ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_2_FREQUENCY;
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88 TimerLoadSet( TIMER2_BASE, TIMER_A, ulFrequency );
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89 IntEnable( INT_TIMER2A );
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90 TimerIntEnable( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
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92 /* The rate at which the timers will interrupt. */
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93 ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_3_FREQUENCY;
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94 TimerLoadSet( TIMER3_BASE, TIMER_A, ulFrequency );
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95 IntEnable( INT_TIMER3A );
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96 TimerIntEnable( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
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98 /* Enable both timers. */
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99 TimerEnable( TIMER2_BASE, TIMER_A );
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100 TimerEnable( TIMER3_BASE, TIMER_A );
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102 /*-----------------------------------------------------------*/
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104 void vT2InterruptHandler( void )
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106 TimerIntClear( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
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107 portEND_SWITCHING_ISR( xFirstTimerHandler() );
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109 /*-----------------------------------------------------------*/
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111 void vT3InterruptHandler( void )
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113 TimerIntClear( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
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114 portEND_SWITCHING_ISR( xSecondTimerHandler() );
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