/* | |
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* FreeRTOS tutorial books are available in pdf and paperback. * | |
* Complete, revised, and edited pdf reference manuals are also * | |
* available. * | |
* * | |
* Purchasing FreeRTOS documentation will not only help you, by * | |
* ensuring you get running as quickly as possible and with an * | |
* in-depth knowledge of how to use FreeRTOS, it will also help * | |
* the FreeRTOS project to continue with its mission of providing * | |
* professional grade, cross platform, de facto standard solutions * | |
* for microcontrollers - completely free of charge! * | |
* * | |
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< * | |
* * | |
* Thank you for using FreeRTOS, and thank you for your support! * | |
* * | |
*************************************************************************** | |
This file is part of the FreeRTOS distribution. | |
FreeRTOS is free software; you can redistribute it and/or modify it under | |
the terms of the GNU General Public License (version 2) as published by the | |
Free Software Foundation AND MODIFIED BY the FreeRTOS exception. | |
>>>NOTE<<< The modification to the GPL is included to allow you to | |
distribute a combined work that includes FreeRTOS without being obliged to | |
provide the source code for proprietary components outside of the FreeRTOS | |
kernel. FreeRTOS is distributed in the hope that it will be useful, but | |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
more details. You should have received a copy of the GNU General Public | |
License and the FreeRTOS license exception along with FreeRTOS; if not it | |
can be viewed here: http://www.freertos.org/a00114.html and also obtained | |
by writing to Richard Barry, contact details for whom are available on the | |
FreeRTOS WEB site. | |
1 tab == 4 spaces! | |
*************************************************************************** | |
* * | |
* Having a problem? Start by reading the FAQ "My application does * | |
* not run, what could be wrong? * | |
* * | |
* http://www.FreeRTOS.org/FAQHelp.html * | |
* * | |
*************************************************************************** | |
http://www.FreeRTOS.org - Documentation, training, latest information, | |
license and contact details. | |
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
including FreeRTOS+Trace - an indispensable productivity tool. | |
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell | |
the code with commercial support, indemnification, and middleware, under | |
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also | |
provide a safety engineered and independently SIL3 certified version under | |
the SafeRTOS brand: http://www.SafeRTOS.com. | |
*/ | |
/* 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() ); | |
} | |
/*-----------------------------------------------------------*/ |