/*
    FreeRTOS V8.2.3 - Copyright (C) 2015 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     !<<
    >>!   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 on the following
    link: http://www.freertos.org/a00114.html

    ***************************************************************************
     *                                                                       *
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*/

/*
 * This file initialises the two timers available in the Timer32 peripheral.
 *
 * Channels 0 and 1 provide the interrupts that are used with the IntQ
 * standard demo tasks, which test interrupt nesting and using queues from
 * interrupts.
 */

/* Scheduler includes. */
#include "FreeRTOS.h"

/* Demo includes. */
#include "IntQueueTimer.h"
#include "IntQueue.h"

/* The frequencies at which the two timers expire are slightly offset to ensure
they don't remain synchronised. */
#define tmrTIMER_0_FREQUENCY	( 2000UL )
#define tmrTIMER_1_FREQUENCY	( 2003UL )

/* The interrupts use the FreeRTOS API so must be at or below the max syscall
interrupt priority.  Counter-intuitively, the higher the numeric number the
lower the logical priority. http://www.freertos.org/RTOS-Cortex-M3-M4.html */
#define tmrLOWER_PRIORITY		( configMAX_SYSCALL_INTERRUPT_PRIORITY )
#define tmrHIGHER_PRIORITY		( configMAX_SYSCALL_INTERRUPT_PRIORITY + 1 )
/*-----------------------------------------------------------*/

/* Handlers for the two timer peripherals - two channels are used in the TC0
timer. */
void vT32_0_Handler( void );
void vT32_1_Handler( void );

/*-----------------------------------------------------------*/

void vInitialiseTimerForIntQueueTest( void )
{
    /* Configure the timer channels. */
	MAP_Timer32_initModule( TIMER32_0_MODULE, TIMER32_PRESCALER_1, TIMER32_32BIT, TIMER32_PERIODIC_MODE );
	MAP_Timer32_setCount( TIMER32_0_MODULE, CS_getMCLK() / tmrTIMER_0_FREQUENCY );
	MAP_Timer32_enableInterrupt( TIMER32_0_MODULE );
	MAP_Timer32_startTimer( TIMER32_0_MODULE, false );
	MAP_Interrupt_setPriority( INT_T32_INT1, tmrLOWER_PRIORITY );
	MAP_Interrupt_enableInterrupt( INT_T32_INT1 );

	MAP_Timer32_initModule( TIMER32_1_MODULE, TIMER32_PRESCALER_1, TIMER32_32BIT, TIMER32_PERIODIC_MODE );
	MAP_Timer32_setCount( TIMER32_1_MODULE, CS_getMCLK() / tmrTIMER_1_FREQUENCY );
	MAP_Timer32_enableInterrupt( TIMER32_1_MODULE );
	MAP_Timer32_startTimer( TIMER32_1_MODULE, false );
	MAP_Interrupt_setPriority( INT_T32_INT2, tmrHIGHER_PRIORITY );
	MAP_Interrupt_enableInterrupt( INT_T32_INT2 );
}
/*-----------------------------------------------------------*/

void vT32_0_Handler( void )
{
    MAP_Timer32_clearInterruptFlag( TIMER32_0_MODULE );
	portYIELD_FROM_ISR( xFirstTimerHandler() );
}
/*-----------------------------------------------------------*/

void vT32_1_Handler( void )
{
    MAP_Timer32_clearInterruptFlag( TIMER32_1_MODULE );
	portYIELD_FROM_ISR( xSecondTimerHandler() );
}