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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!
*/
/* FreeRTOS includes. */
#include "FreeRTOS.h"
/* Standard demo includes. */
#include "IntQueueTimer.h"
#include "IntQueue.h"
/* Microchip includes. */
#include "MEC14xx/mec14xx_timers.h"
#include "MEC14xx/mec14xx_jtvic.h"
#include "MEC14xx/mec14xx.h"
/* The frequency of the two timers is offset so the time between the timers
expiring is not always the same. */
#define timerINTERRUPT0_FREQUENCY ( 2000UL )
#define timerINTERRUPT1_FREQUENCY ( 2221UL )
/* MEC14xx JTVIC external interrupt controller is mapped to M14K closely-coupled
peripheral space. */
#define portMMCR_JTVIC_GIRQ23_PRIA *((volatile uint32_t *)(0xBFFFC3F0ul))
/*-----------------------------------------------------------*/
/* These are the C handlers called from the asm wrappers. */
void vT0InterruptHandler( void );
void vT1InterruptHandler( void );
/*-----------------------------------------------------------*/
void vInitialiseTimerForIntQueueTest( void )
{
/* Timer RT is used for the tick interrupt, timer 3 is used for the high
frequency interrupt test. This file therefore uses timers 0 and 1. */
uint32_t ulPreload = ( unsigned short ) ( ( configPERIPHERAL_CLOCK_HZ / ( unsigned long ) timerINTERRUPT0_FREQUENCY ) );
btmr_sleep_en( BTMR0_ID, 0 );
btmr_init( BTMR0_ID, BTMR_COUNT_DOWN + BTMR_AUTO_RESTART + BTMR_INT_EN, 0, ulPreload, ulPreload );
btmr_start( BTMR0_ID );
jtvic_clr_source( MEC14xx_GIRQ23_ID, 0 );
portMMCR_JTVIC_GIRQ23_PRIA &= ~( 0x0Ful << 0 );
portMMCR_JTVIC_GIRQ23_PRIA |= ( ( portIPL_TO_CODE( configMAX_SYSCALL_INTERRUPT_PRIORITY ) ) << 0 );
jtvic_en_source( MEC14xx_GIRQ23_ID, 0, pdTRUE );
ulPreload = ( unsigned short ) ( ( configPERIPHERAL_CLOCK_HZ / ( unsigned long ) timerINTERRUPT1_FREQUENCY ) );
btmr_sleep_en( BTMR1_ID, 0 );
btmr_init( BTMR1_ID, BTMR_COUNT_DOWN + BTMR_AUTO_RESTART + BTMR_INT_EN, 0, ulPreload, ulPreload );
btmr_start( BTMR1_ID );
jtvic_clr_source( MEC14xx_GIRQ23_ID, 1 );
portMMCR_JTVIC_GIRQ23_PRIA &= ~( 0x0Ful << 4 );
portMMCR_JTVIC_GIRQ23_PRIA |= ( ( portIPL_TO_CODE( configMAX_SYSCALL_INTERRUPT_PRIORITY ) ) << 4 );
jtvic_en_source( MEC14xx_GIRQ23_ID, 1, pdTRUE );
}
/*-----------------------------------------------------------*/
void vT0InterruptHandler( void )
{
/* Disable all interrupts because the source bit is shared with a bit used
by the other timer and the high frequency timer test. */
__asm volatile( "di" );
/* Clear the timer interrupt. */
jtvic_clr_source( MEC14xx_GIRQ23_ID, 0 );
__asm volatile( "ei" );
portEND_SWITCHING_ISR( xFirstTimerHandler() );
}
/*-----------------------------------------------------------*/
void vT1InterruptHandler( void )
{
/* Disable all interrupts because the source bit is shared with a bit used
by the other timer and the high frequency timer test. */
__asm volatile( "di" );
/* Clear the timer interrupt. */
jtvic_clr_source( MEC14xx_GIRQ23_ID, 1 );
__asm volatile( "ei" );
portEND_SWITCHING_ISR( xSecondTimerHandler() );
}
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