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/*
* FreeRTOS Kernel V10.2.1
* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 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(IPL0AUTO), vector(_TIMER_3_VECTOR))) vT3InterruptWrapper( void );
void __attribute__( (interrupt(IPL0AUTO), 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() );
}
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