intqueuetimer.c

FreeRTOS - V5.1.1 Last Update: Nov 20 2008 http://sourceforge.net/projects/freertos/

/*
	FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.

	This file is part of the FreeRTOS.org distribution.

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	GNU General Public License for more details.

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	along with FreeRTOS.org; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

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	a combined work that includes FreeRTOS.org, without being obliged to provide
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*/

#include "FreeRTOS.h"
#include "IntQueueTimer.h"
#include "IntQueue.h"

#define timerINTERRUPT1_FREQUENCY	( 2000UL )
#define timerINTERRUPT2_FREQUENCY	( 2001UL )
#define timerPRESCALE_VALUE			( 2 )

void vInitialiseTimerForIntQueueTest( void )
{
const unsigned portSHORT usCompareMatchValue1 = ( unsigned portSHORT ) ( ( configCPU_CLOCK_HZ / timerPRESCALE_VALUE ) / timerINTERRUPT1_FREQUENCY );
const unsigned portSHORT usCompareMatchValue2 = ( unsigned portSHORT ) ( ( configCPU_CLOCK_HZ / timerPRESCALE_VALUE ) / timerINTERRUPT2_FREQUENCY );

	/* Configure interrupt priority and level and unmask interrupt. */
	MCF_INTC0_ICR56 = ( ( configMAX_SYSCALL_INTERRUPT_PRIORITY - 1 ) << 3 );
	MCF_INTC0_IMRH &= ~( MCF_INTC_IMRH_INT_MASK56 );

	MCF_PIT1_PCSR |= MCF_PIT_PCSR_PIF;
	MCF_PIT1_PCSR = ( MCF_PIT_PCSR_PIE | MCF_PIT_PCSR_RLD | MCF_PIT_PCSR_EN );
	MCF_PIT1_PMR = usCompareMatchValue1;

	MCF_INTC0_ICR57 = ( configMAX_SYSCALL_INTERRUPT_PRIORITY << 3 );
	MCF_INTC0_IMRH &= ~( MCF_INTC_IMRH_INT_MASK57 );

	MCF_PIT2_PCSR |= MCF_PIT_PCSR_PIF;
	MCF_PIT2_PCSR = ( MCF_PIT_PCSR_PIE | MCF_PIT_PCSR_RLD | MCF_PIT_PCSR_EN );
	MCF_PIT2_PMR = usCompareMatchValue2;
}
/*-----------------------------------------------------------*/

void __attribute__ ((interrupt)) __cs3_isr_interrupt_120( void )
{
	MCF_PIT1_PCSR |= MCF_PIT_PCSR_PIF;
	portEND_SWITCHING_ISR( xFirstTimerHandler() );
}
/*-----------------------------------------------------------*/

void __attribute__ ((interrupt)) __cs3_isr_interrupt_121( void )
{
	MCF_PIT2_PCSR |= MCF_PIT_PCSR_PIF;
	portEND_SWITCHING_ISR( xSecondTimerHandler() );
}