/* | |
* FreeRTOS Kernel V10.0.0 | |
* Copyright (C) 2017 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. If you wish to use our Amazon | |
* FreeRTOS name, please do so in a fair use way that does not cause confusion. | |
* | |
* 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" | |
/* Hardware includes. */ | |
#include "lpc11xx.h" | |
/* The two timer frequencies. */ | |
#define tmrTIMER_2_FREQUENCY ( 2000UL ) | |
#define tmrTIMER_3_FREQUENCY ( 2001UL ) | |
/* 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 ) | |
{ | |
/* Enable AHB clock for GPIO and 16-bit timers. */ | |
LPC_SYSCON->SYSAHBCLKCTRL |= ( 7 << 6 ); | |
/* Interrupt and reset on MR0 match. */ | |
LPC_TMR16B0->MCR = 0x03; | |
LPC_TMR16B1->MCR = 0x03; | |
/* Configure the frequency of the interrupt generated by MR0 matches. */ | |
LPC_TMR16B0->MR0 = SystemCoreClock / tmrTIMER_2_FREQUENCY; | |
LPC_TMR16B1->MR0 = SystemCoreClock / tmrTIMER_3_FREQUENCY; | |
/* 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( TIMER_16_0_IRQn, trmSECOND_HIGHEST_PRIORITY ); | |
NVIC_SetPriority( TIMER_16_1_IRQn, tmrMAX_PRIORITY ); | |
/* Enable the timer interrupts. */ | |
NVIC_EnableIRQ( TIMER_16_0_IRQn ); | |
NVIC_EnableIRQ( TIMER_16_1_IRQn ); | |
/* Start the timers. */ | |
LPC_TMR16B0->TCR = 0x01; | |
LPC_TMR16B1->TCR = 0x01; | |
} | |
/*-----------------------------------------------------------*/ | |
void TIMER16_0_IRQHandler(void) | |
{ | |
/* Clear the interrupt. */ | |
LPC_TMR16B0->IR = LPC_TMR16B0->IR; | |
/* Call the standard demo int queue timer function for this first timer. */ | |
portEND_SWITCHING_ISR( xFirstTimerHandler() ); | |
} | |
/*-----------------------------------------------------------*/ | |
void TIMER16_1_IRQHandler(void) | |
{ | |
/* Clear the interrupt. */ | |
LPC_TMR16B1->IR = LPC_TMR16B1->IR; | |
/* Call the standard demo int queue timer function for this second timer. */ | |
portEND_SWITCHING_ISR( xSecondTimerHandler() ); | |
} | |
/*-----------------------------------------------------------*/ |