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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!
*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Demo includes. */
#include "IntQueueTimer.h"
#include "IntQueue.h"
/* Driver APIs.*/
#include "fsl_ctimer.h"
/* The priorities for the two timers. Note that a priority of 0 is the highest
possible on Cortex-M devices. */
#define tmrMAX_PRIORITY ( 0UL )
#define trmSECOND_HIGHEST_PRIORITY ( tmrMAX_PRIORITY + 1 )
void vInitialiseTimerForIntQueueTest( void )
{
ctimer_config_t xConfigTimer0, xConfigTimer1;
ctimer_match_config_t xConfigInterrupt = { 0 };
memset( &xConfigTimer0, 0x00, sizeof( xConfigTimer0 ) );
memset( &xConfigTimer1, 0x00, sizeof( xConfigTimer1 ) );
/* Enable peripheral bus clock for CTIMER0 and CTIMER1. */
CLOCK_EnableClock( kCLOCK_Ctimer0 );
CLOCK_EnableClock( kCLOCK_Ctimer1 );
/* Interrupt settings for timers --
A timer will generates an interrupt when the count matches the value specified.
Timer will reset itself and restart the count. The interrupt frequency is fairly
arbitrary, in a sense that all we need to make sure is IRQs are triggered so that
queues have items for tasks to process. */
xConfigInterrupt.enableCounterReset = true;
xConfigInterrupt.enableCounterStop = false;
xConfigInterrupt.enableInterrupt = true;
xConfigInterrupt.matchValue = 0xFFFFF;
xConfigInterrupt.outControl = kCTIMER_Output_NoAction;
xConfigInterrupt.outPinInitState = true;
/* Configuration settings for timers. */
CTIMER_GetDefaultConfig( &xConfigTimer0 );
xConfigTimer0.prescale = 1;
CTIMER_GetDefaultConfig( &xConfigTimer1 );
xConfigTimer1.prescale = 2;
/* Initialize timers. */
CTIMER_Init( CTIMER0, &xConfigTimer0 );
CTIMER_SetupMatch( CTIMER0, kCTIMER_Match_0, &xConfigInterrupt );
CTIMER_Init( CTIMER1, &xConfigTimer1 );
CTIMER_SetupMatch( CTIMER1, kCTIMER_Match_0, &xConfigInterrupt );
/* Don't generate interrupts until the scheduler has been started.
Interrupts will be automatically enabled when the first task starts
running. */
taskDISABLE_INTERRUPTS();
/* Set the timer interrupts to be above the kernel. The interrupts are
assigned different priorities so they nest with each other. */
NVIC_SetPriority( CTIMER0_IRQn, trmSECOND_HIGHEST_PRIORITY );
NVIC_SetPriority( CTIMER1_IRQn, tmrMAX_PRIORITY );
/* Enable the timer interrupts. */
NVIC_EnableIRQ( CTIMER0_IRQn );
NVIC_EnableIRQ( CTIMER1_IRQn );
/* Start timers. */
CTIMER_StartTimer( CTIMER0 );
CTIMER_StartTimer( CTIMER1 );
}
/*-----------------------------------------------------------*/
void CTIMER0_IRQHandler( void )
{
uint32_t ulInterruptStatus;
/* Get Interrupt status flags */
ulInterruptStatus = CTIMER_GetStatusFlags( CTIMER0 );
/* Clear the status flags that were set */
CTIMER_ClearStatusFlags( CTIMER0, ulInterruptStatus );
portEND_SWITCHING_ISR( xFirstTimerHandler() );
}
/*-----------------------------------------------------------*/
void CTIMER1_IRQHandler(void)
{
uint32_t ulInterruptStatus;
/* Get Interrupt status flags */
ulInterruptStatus = CTIMER_GetStatusFlags( CTIMER1 );
/* Clear the status flags that were set */
CTIMER_ClearStatusFlags( CTIMER1, ulInterruptStatus );
portEND_SWITCHING_ISR( xSecondTimerHandler() );
}
/*-----------------------------------------------------------*/
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