/*
    FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd.
    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    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     !<<
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    >>!   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 on the following
    link: http://www.freertos.org/a00114.html

    1 tab == 4 spaces!

    ***************************************************************************
     *                                                                       *
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     *                                                                       *
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    ***************************************************************************

    ***************************************************************************
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    ***************************************************************************
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    ***************************************************************************
     *                                                                       *
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    ***************************************************************************

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    1 tab == 4 spaces!
*/

/*
 * 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 "iodefine.h"

#define tmrTIMER_0_1_FREQUENCY	( 2000UL )
#define tmrTIMER_2_3_FREQUENCY	( 2001UL )

/* Handlers for the two timers used.  See the documentation page 
for this port on http://www.FreeRTOS.org for more information on writing
interrupt handlers. */
void vT0_1_ISR_Handler( void ) __attribute((interrupt));
void vT2_3_ISR_Handler( void ) __attribute((interrupt));

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;
}
/*-----------------------------------------------------------*/

void vT0_1_ISR_Handler( void )
{
	/* Re-enabled interrupts. */
	__asm volatile( "SETPSW	I" );

	/* Call the handler that is part of the common code - this is where the
	non-portable code ends and the actual test is performed. */
	portYIELD_FROM_ISR( xFirstTimerHandler() );	
}
/*-----------------------------------------------------------*/

void vT2_3_ISR_Handler( void )
{
	/* Re-enabled interrupts. */
	__asm volatile( "SETPSW	I" );

	/* Call the handler that is part of the common code - this is where the
	non-portable code ends and the actual test is performed. */
	portYIELD_FROM_ISR( xSecondTimerHandler() );	
}
/*-----------------------------------------------------------*/