/* | |
FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd. | |
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 exception 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. | |
Alternative commercial license and support terms are also available upon | |
request. See the licensing section of http://www.FreeRTOS.org for full | |
license details. | |
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 along | |
with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59 | |
Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
*************************************************************************** | |
* * | |
* Looking for a quick start? Then check out the FreeRTOS eBook! * | |
* See http://www.FreeRTOS.org/Documentation for details * | |
* * | |
*************************************************************************** | |
1 tab == 4 spaces! | |
Please ensure to read the configuration and relevant port sections of the | |
online documentation. | |
http://www.FreeRTOS.org - Documentation, latest information, license and | |
contact details. | |
http://www.SafeRTOS.com - A version that is certified for use in safety | |
critical systems. | |
http://www.OpenRTOS.com - Commercial support, development, porting, | |
licensing and training services. | |
*/ | |
/* Scheduler includes. */ | |
#include "FreeRTOS.h" | |
/* Demo app includes. */ | |
#include "partest.h" | |
#define ptOUTPUT 0 | |
#define ptALL_OFF 0 | |
unsigned portBASE_TYPE uxOutput; | |
/*----------------------------------------------------------- | |
* Simple parallel port IO routines. | |
*-----------------------------------------------------------*/ | |
void vParTestInitialise( void ) | |
{ | |
/* The explorer 16 board has LED's on port A. All bits are set as output | |
so PORTA is read-modified-written directly. Two pins have change | |
notification pullups that need disabling. */ | |
CNPU2bits.CN22PUE = 0; | |
CNPU2bits.CN23PUE = 0; | |
TRISA = ptOUTPUT; | |
PORTA = ptALL_OFF; | |
uxOutput = ptALL_OFF; | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue ) | |
{ | |
unsigned portBASE_TYPE uxLEDBit; | |
/* Which port A bit is being modified? */ | |
uxLEDBit = 1 << uxLED; | |
if( xValue ) | |
{ | |
/* Turn the LED on. */ | |
portENTER_CRITICAL(); | |
{ | |
uxOutput |= uxLEDBit; | |
PORTA = uxOutput; | |
} | |
portEXIT_CRITICAL(); | |
} | |
else | |
{ | |
/* Turn the LED off. */ | |
portENTER_CRITICAL(); | |
{ | |
uxOutput &= ~uxLEDBit; | |
PORTA = uxOutput; | |
} | |
portEXIT_CRITICAL(); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestToggleLED( unsigned portBASE_TYPE uxLED ) | |
{ | |
unsigned portBASE_TYPE uxLEDBit; | |
uxLEDBit = 1 << uxLED; | |
portENTER_CRITICAL(); | |
{ | |
/* If the LED is already on - turn it off. If the LED is already | |
off, turn it on. */ | |
if( uxOutput & uxLEDBit ) | |
{ | |
uxOutput &= ~uxLEDBit; | |
PORTA = uxOutput; | |
} | |
else | |
{ | |
uxOutput |= uxLEDBit; | |
PORTA = uxOutput; | |
} | |
} | |
portEXIT_CRITICAL(); | |
} | |