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/*
FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org 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.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
* *
* This is a concise, step by step, 'hands on' guide that describes both *
* general multitasking concepts and FreeRTOS specifics. It presents and *
* explains numerous examples that are written using the FreeRTOS API. *
* Full source code for all the examples is provided in an accompanying *
* .zip file. *
* *
***************************************************************************
***************************************************************************
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"
#include "portable.h"
/* Demo app includes. */
#include "partest.h"
/* Hardware specific definitions. */
#include "AT91R40008.h"
#include "pio.h"
#include "aic.h"
#define partstNUM_LEDS ( 8 )
#define partstALL_OUTPUTS_OFF ( ( unsigned portLONG ) ~(0xFFFFFFFF << partstNUM_LEDS) )
static unsigned portLONG ulLEDReg;
/*-----------------------------------------------------------
* Simple parallel port IO routines.
*-----------------------------------------------------------*/
static void SetLeds (unsigned int leds)
{
unsigned portLONG ulPIOSetReg, ulPIOClearReg;
/* LEDs are grouped in different port bits: P3-P6 and P16-P19.
A port bit set to '0' turns an LED on, '1' turns it off. */
ulPIOSetReg = ( (leds & 0xF) << 16 ) | ( (leds & 0xF0) >> 1 );
ulPIOClearReg = (~ulPIOSetReg) & 0x000F0078;
AT91C_BASE_PIO->PIO_SODR = ulPIOSetReg;
AT91C_BASE_PIO->PIO_CODR = ulPIOClearReg;
}
/*-----------------------------------------------------------*/
void vParTestInitialise( void )
{
/* This is performed from main() as the io bits are shared with other setup
functions. Ensure the outputs are off to start. */
ulLEDReg = partstALL_OUTPUTS_OFF;
/* Enable clock to PIO... */
AT91C_BASE_PS->PS_PCER = AT91C_PS_PIO;
/* Enable all 8 LEDs and the four switches to be controlled by PIO... */
AT91C_BASE_PIO->PIO_PER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19 | P1 | P2 | P9 | P12;
/* Configure all LED PIO lines for output... */
AT91C_BASE_PIO->PIO_OER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19;
/* Configure all switch PIO lines for input... */
AT91C_BASE_PIO->PIO_ODR = P1 | P2 | P9 | P12;
/* Set initial state of LEDs. */
SetLeds( ulLEDReg );
}
/*-----------------------------------------------------------*/
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
/* Switch an LED on or off as requested. */
if (uxLED < partstNUM_LEDS)
{
if( xValue )
{
ulLEDReg &= ~(1 << uxLED);
}
else
{
ulLEDReg |= (1 << uxLED);
}
SetLeds( ulLEDReg );
}
}
/*-----------------------------------------------------------*/
void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
/* Toggle the state of the requested LED. */
if (uxLED < partstNUM_LEDS)
{
ulLEDReg ^= ( 1 << uxLED );
SetLeds( ulLEDReg );
}
}
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