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99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/*
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* FreeRTOS Kernel V10.0.1
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* Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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*/
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#include "FreeRTOS.h"
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#include "IntQueueTimer.h"
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#include "IntQueue.h"
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#define timerINTERRUPT3_FREQUENCY ( 2000UL )
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#define timerINTERRUPT4_FREQUENCY ( 2001UL )
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void vT3InterruptHandler( void );
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void vT4InterruptHandler( void );
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/* As these interrupts use the FreeRTOS interrupt entry point, the IPL settings
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in the following prototypes have no effect. The interrupt priorities are set
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by the ConfigIntTimerX() library calls in vInitialiseTimerForIntQueueTest(). */
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void __attribute__( (interrupt(IPL0AUTO), vector(_TIMER_3_VECTOR))) vT3InterruptWrapper( void );
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void __attribute__( (interrupt(IPL0AUTO), vector(_TIMER_4_VECTOR))) vT4InterruptWrapper( void );
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void vInitialiseTimerForIntQueueTest( void )
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{
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/* Timer 1 is used for the tick interrupt, timer 2 is used for the high
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frequency interrupt test. This file therefore uses timers 3 and 4. */
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T3CON = 0;
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TMR3 = 0;
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PR3 = ( unsigned short ) ( configPERIPHERAL_CLOCK_HZ / timerINTERRUPT3_FREQUENCY );
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/* Setup timer 3 interrupt priority to be above the kernel priority. */
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IPC3bits.T3IP = ( configMAX_SYSCALL_INTERRUPT_PRIORITY - 1 );
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/* Clear the interrupt as a starting condition. */
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IFS0bits.T3IF = 0;
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/* Enable the interrupt. */
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IEC0bits.T3IE = 1;
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/* Start the timer. */
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T3CONbits.TON = 1;
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/* Do the same for timer 4. */
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T4CON = 0;
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TMR4 = 0;
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PR4 = ( unsigned short ) ( configPERIPHERAL_CLOCK_HZ / timerINTERRUPT4_FREQUENCY );
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/* Setup timer 4 interrupt priority to be above the kernel priority. */
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IPC4bits.T4IP = configMAX_SYSCALL_INTERRUPT_PRIORITY;
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/* Clear the interrupt as a starting condition. */
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IFS0bits.T4IF = 0;
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/* Enable the interrupt. */
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IEC0bits.T4IE = 1;
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/* Start the timer. */
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T4CONbits.TON = 1;
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}
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/*-----------------------------------------------------------*/
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void vT3InterruptHandler( void )
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{
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IFS0CLR = _IFS0_T3IF_MASK;
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portEND_SWITCHING_ISR( xFirstTimerHandler() );
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}
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/*-----------------------------------------------------------*/
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void vT4InterruptHandler( void )
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{
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IFS0CLR = _IFS0_T4IF_MASK;
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portEND_SWITCHING_ISR( xSecondTimerHandler() );
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}
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