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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.
*/
/*-----------------------------------------------------------
* Simple parallel port IO routines.
*-----------------------------------------------------------*/
/* Kernel includes. */
#include "FreeRTOS.h"
/* Demo application includes. */
#include "partest.h"
/* Library includes. */
#include "xgpio_l.h"
/* Misc hardware specific definitions. */
#define partstALL_AS_OUTPUT 0x00
#define partstCHANNEL_1 0x01
#define partstMAX_4BIT_LED 0x03
/* The outputs are split into two IO sections, these variables maintain the
current value of either section. */
static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;
/*-----------------------------------------------------------*/
/*
* Setup the IO for the LED outputs.
*/
void vParTestInitialise( void )
{
/* Set both sets of LED's on the demo board to outputs. */
XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
/* Start with all outputs off. */
uxCurrentOutput4Bit = 0;
XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );
uxCurrentOutput5Bit = 0;
XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );
}
/*-----------------------------------------------------------*/
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
portENTER_CRITICAL();
{
/* Which IO section does the LED being set/cleared belong to? The
4 bit or 5 bit outputs? */
if( uxLED <= partstMAX_4BIT_LED )
{
uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
puxCurrentValue = &uxCurrentOutput4Bit;
}
else
{
uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
puxCurrentValue = &uxCurrentOutput5Bit;
uxLED -= partstMAX_4BIT_LED;
}
/* Setup the bit mask accordingly. */
uxLED = 0x01 << uxLED;
/* Maintain the current output value. */
if( xValue )
{
*puxCurrentValue |= uxLED;
}
else
{
*puxCurrentValue &= ~uxLED;
}
/* Write the value to the port. */
XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
}
portEXIT_CRITICAL();
}
/*-----------------------------------------------------------*/
void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
portENTER_CRITICAL();
{
/* Which IO section does the LED being toggled belong to? The
4 bit or 5 bit outputs? */
if( uxLED <= partstMAX_4BIT_LED )
{
uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
puxCurrentValue = &uxCurrentOutput4Bit;
}
else
{
uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
puxCurrentValue = &uxCurrentOutput5Bit;
uxLED -= partstMAX_4BIT_LED;
}
/* Setup the bit mask accordingly. */
uxLED = 0x01 << uxLED;
/* Maintain the current output value. */
if( *puxCurrentValue & uxLED )
{
*puxCurrentValue &= ~uxLED;
}
else
{
*puxCurrentValue |= uxLED;
}
/* Write the value to the port. */
XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
}
portEXIT_CRITICAL();
}
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