/* | |
* FreeRTOS Kernel V10.1.1 | |
* Copyright (C) 2018 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() ); | |
} | |