/* | |
FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd. | |
All rights reserved | |
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
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. Full license text is available on the following | |
link: http://www.freertos.org/a00114.html | |
1 tab == 4 spaces! | |
*************************************************************************** | |
* * | |
* Having a problem? Start by reading the FAQ "My application does * | |
* not run, what could be wrong?". Have you defined configASSERT()? * | |
* * | |
* http://www.FreeRTOS.org/FAQHelp.html * | |
* * | |
*************************************************************************** | |
*************************************************************************** | |
* * | |
* FreeRTOS provides completely free yet professionally developed, * | |
* robust, strictly quality controlled, supported, and cross * | |
* platform software that is more than just the market leader, it * | |
* is the industry's de facto standard. * | |
* * | |
* Help yourself get started quickly while simultaneously helping * | |
* to support the FreeRTOS project by purchasing a FreeRTOS * | |
* tutorial book, reference manual, or both: * | |
* http://www.FreeRTOS.org/Documentation * | |
* * | |
*************************************************************************** | |
*************************************************************************** | |
* * | |
* Investing in training allows your team to be as productive as * | |
* possible as early as possible, lowering your overall development * | |
* cost, and enabling you to bring a more robust product to market * | |
* earlier than would otherwise be possible. Richard Barry is both * | |
* the architect and key author of FreeRTOS, and so also the world's * | |
* leading authority on what is the world's most popular real time * | |
* kernel for deeply embedded MCU designs. Obtaining your training * | |
* from Richard ensures your team will gain directly from his in-depth * | |
* product knowledge and years of usage experience. Contact Real Time * | |
* Engineers Ltd to enquire about the FreeRTOS Masterclass, presented * | |
* by Richard Barry: http://www.FreeRTOS.org/contact | |
* * | |
*************************************************************************** | |
*************************************************************************** | |
* * | |
* You are receiving this top quality software for free. Please play * | |
* fair and reciprocate by reporting any suspected issues and * | |
* participating in the community forum: * | |
* http://www.FreeRTOS.org/support * | |
* * | |
* Thank you! * | |
* * | |
*************************************************************************** | |
http://www.FreeRTOS.org - Documentation, books, training, latest versions, | |
license and Real Time Engineers Ltd. contact details. | |
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
including FreeRTOS+Trace - an indispensable productivity tool, a DOS | |
compatible FAT file system, and our tiny thread aware UDP/IP stack. | |
http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate. | |
Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS. | |
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High | |
Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS | |
licenses offer ticketed support, indemnification and commercial middleware. | |
http://www.SafeRTOS.com - High Integrity Systems also provide a safety | |
engineered and independently SIL3 certified version for use in safety and | |
mission critical applications that require provable dependability. | |
1 tab == 4 spaces! | |
*/ | |
#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 ) __attribute__((noinline)); | |
static SemaphoreHandle_t xEMACSemaphore; | |
/*-----------------------------------------------------------*/ | |
void vPassEMACSemaphore( SemaphoreHandle_t xSemaphore ) | |
{ | |
xEMACSemaphore = xSemaphore; | |
} | |
/*-----------------------------------------------------------*/ | |
void vEMACISR_Handler( void ) | |
{ | |
volatile unsigned long ulIntStatus, ulRxStatus; | |
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE; | |
ulIntStatus = AT91C_BASE_EMAC->EMAC_ISR; | |
ulRxStatus = AT91C_BASE_EMAC->EMAC_RSR; | |
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 ); | |
AT91C_BASE_EMAC->EMAC_RSR = AT91C_EMAC_REC; | |
} | |
/* Clear the interrupt. */ | |
AT91C_BASE_AIC->AIC_EOICR = 0; | |
/* 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. */ | |
portYIELD_FROM_ISR(); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
void vEMACISR_Wrapper( void ) | |
{ | |
/* Save the context of the interrupted task. */ | |
portSAVE_CONTEXT(); | |
/* Call the handler task to do the actual work. This must be a separate | |
function to ensure the stack frame is correctly set up. */ | |
__asm volatile ("bl vEMACISR_Handler"); | |
/* Restore the context of whichever task is the next to run. */ | |
portRESTORE_CONTEXT(); | |
} | |