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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_LM3Sxxxx_Rowley/] [IntQueueTimer.c] - Blame information for rev 594

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1 581 jeremybenn
/*
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    FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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    ***************************************************************************
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    *                                                                         *
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    * If you are:                                                             *
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    *                                                                         *
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    *    + New to FreeRTOS,                                                   *
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    *    + Wanting to learn FreeRTOS or multitasking in general quickly       *
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    *    + Looking for basic training,                                        *
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    *    + Wanting to improve your FreeRTOS skills and productivity           *
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    *                                                                         *
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    * then take a look at the FreeRTOS books - available as PDF or paperback  *
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    *                                                                         *
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    *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
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    *                  http://www.FreeRTOS.org/Documentation                  *
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    *                                                                         *
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    * A pdf reference manual is also available.  Both are usually delivered   *
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    * to your inbox within 20 minutes to two hours when purchased between 8am *
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    * and 8pm GMT (although please allow up to 24 hours in case of            *
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    * exceptional circumstances).  Thank you for your support!                *
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    *                                                                         *
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    ***************************************************************************
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    This file is part of the FreeRTOS distribution.
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    FreeRTOS is free software; you can redistribute it and/or modify it under
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    the terms of the GNU General Public License (version 2) as published by the
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    Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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    ***NOTE*** The exception to the GPL is included to allow you to distribute
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    a combined work that includes FreeRTOS without being obliged to provide the
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    source code for proprietary components outside of the FreeRTOS kernel.
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    FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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    more details. You should have received a copy of the GNU General Public
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    License and the FreeRTOS license exception along with FreeRTOS; if not it
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    can be viewed here: http://www.freertos.org/a00114.html and also obtained
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    by writing to Richard Barry, contact details for whom are available on the
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    FreeRTOS WEB site.
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    1 tab == 4 spaces!
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    http://www.FreeRTOS.org - Documentation, latest information, license and
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    contact details.
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    http://www.SafeRTOS.com - A version that is certified for use in safety
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    critical systems.
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    http://www.OpenRTOS.com - Commercial support, development, porting,
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    licensing and training services.
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*/
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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/* Demo includes. */
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#include "IntQueueTimer.h"
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#include "IntQueue.h"
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/* Library includes. */
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#include "hw_ints.h"
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#include "hw_memmap.h"
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#include "hw_types.h"
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#include "interrupt.h"
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#include "sysctl.h"
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#include "lmi_timer.h"
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#define tmrTIMER_2_FREQUENCY    ( 2000UL )
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#define tmrTIMER_3_FREQUENCY    ( 2001UL )
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void vInitialiseTimerForIntQueueTest( void )
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{
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unsigned long ulFrequency;
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        /* Timer 2 and 3 are utilised for this test. */
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        SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER2 );
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    SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER3 );
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    TimerConfigure( TIMER2_BASE, TIMER_CFG_32_BIT_PER );
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    TimerConfigure( TIMER3_BASE, TIMER_CFG_32_BIT_PER );
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        /* Set the timer interrupts to be above the kernel.  The interrupts are
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         assigned different priorities so they nest with each other. */
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        IntPrioritySet( INT_TIMER2A, configMAX_SYSCALL_INTERRUPT_PRIORITY + ( 1 << 5 ) ); /* Shift left 5 as only the top 3 bits are implemented. */
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        IntPrioritySet( INT_TIMER3A, configMAX_SYSCALL_INTERRUPT_PRIORITY );
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        /* Ensure interrupts do not start until the scheduler is running. */
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        portDISABLE_INTERRUPTS();
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        /* The rate at which the timers will interrupt. */
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        ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_2_FREQUENCY;
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    TimerLoadSet( TIMER2_BASE, TIMER_A, ulFrequency );
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    IntEnable( INT_TIMER2A );
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    TimerIntEnable( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
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        /* The rate at which the timers will interrupt. */
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        ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_3_FREQUENCY;
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    TimerLoadSet( TIMER3_BASE, TIMER_A, ulFrequency );
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    IntEnable( INT_TIMER3A );
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    TimerIntEnable( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
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    /* Enable both timers. */
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    TimerEnable( TIMER2_BASE, TIMER_A );
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    TimerEnable( TIMER3_BASE, TIMER_A );
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}
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/*-----------------------------------------------------------*/
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void vT2InterruptHandler( void )
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{
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    TimerIntClear( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
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        portEND_SWITCHING_ISR( xFirstTimerHandler() );
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}
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/*-----------------------------------------------------------*/
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void vT3InterruptHandler( void )
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{
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        TimerIntClear( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
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        portEND_SWITCHING_ISR( xSecondTimerHandler() );
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}
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