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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 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 for details *
* *
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Please ensure to read the configuration and relevant port sections of the
online documentation. - Documentation, latest information, license and
contact details. - A version that is certified for use in safety
critical systems. - Commercial support, development, porting,
licensing and training services.
#include "FreeRTOS.h"
#include "semphr.h"
#include "task.h"
/* Wrapper for the EMAC interrupt. */
void vEMACISR_Wrapper( void ) __attribute__((naked));
/* Handler called by the ISR wrapper. This must be kept a separate
function to ensure the stack frame is correctly set up. */
void vEMACISR_Handler( void );
static xSemaphoreHandle xEMACSemaphore;
void vPassEMACSemaphore( xSemaphoreHandle xSemaphore )
xEMACSemaphore = xSemaphore;
void vEMACISR_Handler( void )
volatile unsigned portLONG ulIntStatus, ulRxStatus;
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
ulIntStatus = AT91C_BASE_EMAC->EMAC_ISR;
if( ( ulIntStatus & AT91C_EMAC_RCOMP ) || ( ulRxStatus & AT91C_EMAC_REC ) )
/* A frame has been received, signal the uIP task so it can process
the Rx descriptors. */
xSemaphoreGiveFromISR( xEMACSemaphore, &xHigherPriorityTaskWoken );
/* Clear the interrupt. */
/* Switch to the uIP task. */
if( xHigherPriorityTaskWoken )
/* If a task of higher priority than the interrupted task was
unblocked by the ISR then this call will ensure that the
unblocked task is the task the ISR returns to. */
void vEMACISR_Wrapper( void )
/* Save the context of the interrupted task. */
/* Call the handler task to do the actual work. This must be a separate
function to ensure the stack frame is correctly set up. */
/* Restore the context of whichever task is the next to run. */