/* 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(); }