/* | |
FreeRTOS V7.3.0 - Copyright (C) 2012 Real Time Engineers Ltd. | |
FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT | |
http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
*************************************************************************** | |
* * | |
* 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 versions, 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. | |
*/ | |
#include "FreeRTOS.h" | |
#include "IntQueueTimer.h" | |
#include "IntQueue.h" | |
#define timerINTERRUPT3_FREQUENCY ( 2000UL ) | |
#define timerINTERRUPT4_FREQUENCY ( 2001UL ) | |
void vT3InterruptHandler( void ); | |
void vT4InterruptHandler( void ); | |
/* As these interrupts use the FreeRTOS interrupt entry point, the IPL settings | |
in the following prototypes have no effect. The interrupt priorities are set | |
by the ConfigIntTimerX() library calls in vInitialiseTimerForIntQueueTest(). */ | |
void __attribute__( (interrupt(ipl0), vector(_TIMER_3_VECTOR))) vT3InterruptWrapper( void ); | |
void __attribute__( (interrupt(ipl0), vector(_TIMER_4_VECTOR))) vT4InterruptWrapper( void ); | |
void vInitialiseTimerForIntQueueTest( void ) | |
{ | |
/* Timer 1 is used for the tick interrupt, timer 2 is used for the high | |
frequency interrupt test. This file therefore uses timers 3 and 4. */ | |
T3CON = 0; | |
TMR3 = 0; | |
PR3 = ( unsigned short ) ( configPERIPHERAL_CLOCK_HZ / timerINTERRUPT3_FREQUENCY ); | |
/* Setup timer 3 interrupt priority to be above the kernel priority. */ | |
ConfigIntTimer3( T3_INT_ON | ( configMAX_SYSCALL_INTERRUPT_PRIORITY - 1 ) ); | |
/* Clear the interrupt as a starting condition. */ | |
IFS0bits.T3IF = 0; | |
/* Enable the interrupt. */ | |
IEC0bits.T3IE = 1; | |
/* Start the timer. */ | |
T3CONbits.TON = 1; | |
/* Do the same for timer 4. */ | |
T4CON = 0; | |
TMR4 = 0; | |
PR4 = ( unsigned short ) ( configPERIPHERAL_CLOCK_HZ / timerINTERRUPT4_FREQUENCY ); | |
/* Setup timer 4 interrupt priority to be above the kernel priority. */ | |
ConfigIntTimer4( T4_INT_ON | ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) ); | |
/* Clear the interrupt as a starting condition. */ | |
IFS0bits.T4IF = 0; | |
/* Enable the interrupt. */ | |
IEC0bits.T4IE = 1; | |
/* Start the timer. */ | |
T4CONbits.TON = 1; | |
} | |
/*-----------------------------------------------------------*/ | |
void vT3InterruptHandler( void ) | |
{ | |
IFS0CLR = _IFS0_T3IF_MASK; | |
portEND_SWITCHING_ISR( xFirstTimerHandler() ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vT4InterruptHandler( void ) | |
{ | |
IFS0CLR = _IFS0_T4IF_MASK; | |
portEND_SWITCHING_ISR( xSecondTimerHandler() ); | |
} | |