/*
    FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd. 
    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
     *    robust, strictly quality controlled, supported, and cross          *
     *    platform software that has become a de facto standard.             *
     *                                                                       *
     *    Help yourself get started quickly and support the FreeRTOS         *
     *    project by purchasing a FreeRTOS tutorial book, reference          *
     *    manual, or both from: http://www.FreeRTOS.org/Documentation        *
     *                                                                       *
     *    Thank you!                                                         *
     *                                                                       *
    ***************************************************************************

    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

    1 tab == 4 spaces!

    ***************************************************************************
     *                                                                       *
     *    Having a problem?  Start by reading the FAQ "My application does   *
     *    not run, what could be wrong?"                                     *
     *                                                                       *
     *    http://www.FreeRTOS.org/FAQHelp.html                               *
     *                                                                       *
    ***************************************************************************

    http://www.FreeRTOS.org - Documentation, books, training, latest versions,
    license and Real Time Engineers Ltd. contact details.

    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
    including FreeRTOS+Trace - an indispensable productivity tool, a DOS
    compatible FAT file system, and our tiny thread aware UDP/IP stack.

    http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
    Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and middleware.

    http://www.SafeRTOS.com - High Integrity Systems also provide a safety
    engineered and independently SIL3 certified version for use in safety and
    mission critical applications that require provable dependability.

    1 tab == 4 spaces!
*/

#include "FreeRTOS.h"
#include "IntQueueTimer.h"
#include "IntQueue.h"

#define timerINTERRUPT3_FREQUENCY	( 2000UL )
#define timerINTERRUPT4_FREQUENCY	( 2001UL )

void vT3InterruptHandler( void );
void vT4InterruptHandler( void );

/* As these interrupts use the FreeRTOS interrupt entry point, the IPL settings
in the following prototypes have no effect.  The interrupt priorities are set
by the ConfigIntTimerX() library calls in vInitialiseTimerForIntQueueTest(). */
void __attribute__( (interrupt(ipl0), vector(_TIMER_3_VECTOR))) vT3InterruptWrapper( void );
void __attribute__( (interrupt(ipl0), vector(_TIMER_4_VECTOR))) vT4InterruptWrapper( void );

void vInitialiseTimerForIntQueueTest( void )
{
	/* Timer 1 is used for the tick interrupt, timer 2 is used for the high
	frequency interrupt test.  This file therefore uses timers 3 and 4. */

	T3CON = 0;
	TMR3 = 0;
	PR3 = ( unsigned short ) ( configPERIPHERAL_CLOCK_HZ / timerINTERRUPT3_FREQUENCY );

	/* Setup timer 3 interrupt priority to be above the kernel priority. */
	IPC3bits.T3IP = ( configMAX_SYSCALL_INTERRUPT_PRIORITY - 1 );

	/* Clear the interrupt as a starting condition. */
	IFS0bits.T3IF = 0;

	/* Enable the interrupt. */
	IEC0bits.T3IE = 1;

	/* Start the timer. */
	T3CONbits.TON = 1;


	/* Do the same for timer 4. */
	T4CON = 0;
	TMR4 = 0;
	PR4 = ( unsigned short ) ( configPERIPHERAL_CLOCK_HZ / timerINTERRUPT4_FREQUENCY );

	/* Setup timer 4 interrupt priority to be above the kernel priority. */
	IPC4bits.T4IP = configMAX_SYSCALL_INTERRUPT_PRIORITY;

	/* Clear the interrupt as a starting condition. */
	IFS0bits.T4IF = 0;

	/* Enable the interrupt. */
	IEC0bits.T4IE = 1;

	/* Start the timer. */
	T4CONbits.TON = 1;
}
/*-----------------------------------------------------------*/

void vT3InterruptHandler( void )
{
	IFS0CLR = _IFS0_T3IF_MASK;
	portEND_SWITCHING_ISR( xFirstTimerHandler() );
}
/*-----------------------------------------------------------*/

void vT4InterruptHandler( void )
{
	IFS0CLR = _IFS0_T4IF_MASK;
	portEND_SWITCHING_ISR( xSecondTimerHandler() );
}