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/*
* FreeRTOS V202111.00
* Copyright (C) 2020 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"
/* SDK APIs.*/
#include "pico/time.h"
#include "hardware/irq.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 + 0x40 )
#define FIRST_TIMER_PERIOD_US 500
#define SECOND_TIMER_PERIOD_US 487
void prvAlarm0Callback( uint timer )
{
configASSERT(timer == 0);
BaseType_t xHigherPriorityTaskWoken = xFirstTimerHandler();
hardware_alarm_set_target(0, make_timeout_time_us( FIRST_TIMER_PERIOD_US) );
portEND_SWITCHING_ISR(xHigherPriorityTaskWoken);
}
void prvAlarm1Callback( uint timer )
{
configASSERT(timer == 1);
BaseType_t xHigherPriorityTaskWoken = xSecondTimerHandler();
hardware_alarm_set_target(1, make_timeout_time_us( SECOND_TIMER_PERIOD_US) );
portEND_SWITCHING_ISR(xHigherPriorityTaskWoken);
}
void vInitialiseTimerForIntQueueTest( void )
{
/* Use raw hardware alarms so we have nested interrupts */
hardware_alarm_claim(0);
hardware_alarm_claim(1);
/* Don't generate interrupts until the scheduler has been started.
Interrupts will be automatically enabled when the first task starts
running. */
taskDISABLE_INTERRUPTS();
/* Initialize timers. */
/* Set the timer interrupts to be above the kernel. The interrupts are
assigned different priorities so they nest with each other. */
irq_set_priority(TIMER_IRQ_0, tmrMAX_PRIORITY);
irq_set_priority(TIMER_IRQ_1, trmSECOND_HIGHEST_PRIORITY);
hardware_alarm_set_callback(0, prvAlarm0Callback);
hardware_alarm_set_callback(1, prvAlarm1Callback);
hardware_alarm_set_target(0, make_timeout_time_us( FIRST_TIMER_PERIOD_US) );
hardware_alarm_set_target(1, make_timeout_time_us( SECOND_TIMER_PERIOD_US) );
}
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