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/*
FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
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* platform software that has become a de facto standard. *
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This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to !<<
>>! distribute a combined work that includes FreeRTOS without being !<<
>>! obliged to provide the source code for proprietary components !<<
>>! outside of the FreeRTOS kernel. !<<
FreeRTOS 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. Full license text is available from the following
link: http://www.freertos.org/a00114.html
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* *
* Having a problem? Start by reading the FAQ "My application does *
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* *
* http://www.FreeRTOS.org/FAQHelp.html *
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*/
/*
* This file contains the non-portable and therefore RX62N specific parts of
* the IntQueue standard demo task - namely the configuration of the timers
* that generate the interrupts and the interrupt entry points.
*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Demo includes. */
#include "IntQueueTimer.h"
#include "IntQueue.h"
/* Hardware specifics. */
#include <iorx62n.h>
#define tmrTIMER_0_1_FREQUENCY ( 2000UL )
#define tmrTIMER_2_3_FREQUENCY ( 2001UL )
/* Handlers for the two timers used. */
__interrupt void vT0_1InterruptHandler( void );
__interrupt void vT2_3InterruptHandler( void );
void vInitialiseTimerForIntQueueTest( void )
{
/* Ensure interrupts do not start until full configuration is complete. */
portENTER_CRITICAL();
{
/* Cascade two 8bit timer channels to generate the interrupts.
8bit timer unit 1 (TMR0 and TMR1) and 8bit timer unit 2 (TMR2 and TMR3 are
utilised for this test. */
/* Enable the timers. */
SYSTEM.MSTPCRA.BIT.MSTPA5 = 0;
SYSTEM.MSTPCRA.BIT.MSTPA4 = 0;
/* Enable compare match A interrupt request. */
TMR0.TCR.BIT.CMIEA = 1;
TMR2.TCR.BIT.CMIEA = 1;
/* Clear the timer on compare match A. */
TMR0.TCR.BIT.CCLR = 1;
TMR2.TCR.BIT.CCLR = 1;
/* Set the compare match value. */
TMR01.TCORA = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / tmrTIMER_0_1_FREQUENCY ) -1 ) / 8 );
TMR23.TCORA = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / tmrTIMER_0_1_FREQUENCY ) -1 ) / 8 );
/* 16 bit operation ( count from timer 1,2 ). */
TMR0.TCCR.BIT.CSS = 3;
TMR2.TCCR.BIT.CSS = 3;
/* Use PCLK as the input. */
TMR1.TCCR.BIT.CSS = 1;
TMR3.TCCR.BIT.CSS = 1;
/* Divide PCLK by 8. */
TMR1.TCCR.BIT.CKS = 2;
TMR3.TCCR.BIT.CKS = 2;
/* Enable TMR 0, 2 interrupts. */
IEN( TMR0, CMIA0 ) = 1;
IEN( TMR2, CMIA2 ) = 1;
/* Set the timer interrupts to be above the kernel. The interrupts are
assigned different priorities so they nest with each other. */
IPR( TMR0, CMIA0 ) = configMAX_SYSCALL_INTERRUPT_PRIORITY - 1;
IPR( TMR2, CMIA2 ) = ( configMAX_SYSCALL_INTERRUPT_PRIORITY - 2 );
}
portEXIT_CRITICAL();
/* Ensure the interrupts are clear as they are edge detected. */
IR( TMR0, CMIA0 ) = 0;
IR( TMR2, CMIA2 ) = 0;
}
/*-----------------------------------------------------------*/
#pragma vector = VECT_TMR0_CMIA0
__interrupt void vT0_1InterruptHandler( void )
{
__enable_interrupt();
portYIELD_FROM_ISR( xFirstTimerHandler() );
}
/*-----------------------------------------------------------*/
#pragma vector = VECT_TMR2_CMIA2
__interrupt void vT2_3InterruptHandler( void )
{
__enable_interrupt();
portYIELD_FROM_ISR( xSecondTimerHandler() );
}