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/*
FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
* *
* This is a concise, step by step, 'hands on' guide that describes both *
* general multitasking concepts and FreeRTOS specifics. It presents and *
* explains numerous examples that are written using the FreeRTOS API. *
* Full source code for all the examples is provided in an accompanying *
* .zip file. *
* *
***************************************************************************
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
http://www.FreeRTOS.org - Documentation, latest information, license and
contact details.
http://www.SafeRTOS.com - A version that is certified for use in safety
critical systems.
http://www.OpenRTOS.com - Commercial support, development, porting,
licensing and training services.
*/
/* Scheduler includes. */
#include "FreeRTOS.h"
/* Demo includes. */
#include "IntQueueTimer.h"
#include "IntQueue.h"
/* Library includes. */
#include "hw_ints.h"
#include "hw_memmap.h"
#include "hw_types.h"
#include "interrupt.h"
#include "sysctl.h"
#include "lmi_timer.h"
#define tmrTIMER_2_FREQUENCY ( 2000UL )
#define tmrTIMER_3_FREQUENCY ( 2001UL )
void vInitialiseTimerForIntQueueTest( void )
{
unsigned long ulFrequency;
/* Timer 2 and 3 are utilised for this test. */
SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER2 );
SysCtlPeripheralEnable( SYSCTL_PERIPH_TIMER3 );
TimerConfigure( TIMER2_BASE, TIMER_CFG_32_BIT_PER );
TimerConfigure( TIMER3_BASE, TIMER_CFG_32_BIT_PER );
/* Set the timer interrupts to be above the kernel. The interrupts are
assigned different priorities so they nest with each other. */
IntPrioritySet( INT_TIMER2A, configMAX_SYSCALL_INTERRUPT_PRIORITY + ( 1 << 5 ) ); /* Shift left 5 as only the top 3 bits are implemented. */
IntPrioritySet( INT_TIMER3A, configMAX_SYSCALL_INTERRUPT_PRIORITY );
/* Ensure interrupts do not start until the scheduler is running. */
portDISABLE_INTERRUPTS();
/* The rate at which the timers will interrupt. */
ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_2_FREQUENCY;
TimerLoadSet( TIMER2_BASE, TIMER_A, ulFrequency );
IntEnable( INT_TIMER2A );
TimerIntEnable( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
/* The rate at which the timers will interrupt. */
ulFrequency = configCPU_CLOCK_HZ / tmrTIMER_3_FREQUENCY;
TimerLoadSet( TIMER3_BASE, TIMER_A, ulFrequency );
IntEnable( INT_TIMER3A );
TimerIntEnable( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
/* Enable both timers. */
TimerEnable( TIMER2_BASE, TIMER_A );
TimerEnable( TIMER3_BASE, TIMER_A );
}
/*-----------------------------------------------------------*/
void vT2InterruptHandler( void )
{
TimerIntClear( TIMER2_BASE, TIMER_TIMA_TIMEOUT );
portEND_SWITCHING_ISR( xFirstTimerHandler() );
}
/*-----------------------------------------------------------*/
void vT3InterruptHandler( void )
{
TimerIntClear( TIMER3_BASE, TIMER_TIMA_TIMEOUT );
portEND_SWITCHING_ISR( xSecondTimerHandler() );
}
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