/* | |
* FreeRTOS+TCP Labs Build 150406 (C) 2015 Real Time Engineers ltd. | |
* Authors include Hein Tibosch and Richard Barry | |
* | |
******************************************************************************* | |
***** NOTE ******* NOTE ******* NOTE ******* NOTE ******* NOTE ******* NOTE *** | |
*** *** | |
*** *** | |
*** FREERTOS+TCP IS STILL IN THE LAB: *** | |
*** *** | |
*** This product is functional and is already being used in commercial *** | |
*** products. Be aware however that we are still refining its design, *** | |
*** the source code does not yet fully conform to the strict coding and *** | |
*** style standards mandated by Real Time Engineers ltd., and the *** | |
*** documentation and testing is not necessarily complete. *** | |
*** *** | |
*** PLEASE REPORT EXPERIENCES USING THE SUPPORT RESOURCES FOUND ON THE *** | |
*** URL: http://www.FreeRTOS.org/contact Active early adopters may, at *** | |
*** the sole discretion of Real Time Engineers Ltd., be offered versions *** | |
*** under a license other than that described below. *** | |
*** *** | |
*** *** | |
***** NOTE ******* NOTE ******* NOTE ******* NOTE ******* NOTE ******* NOTE *** | |
******************************************************************************* | |
* | |
* - Open source licensing - | |
* While FreeRTOS+TCP is in the lab it is provided only under version two of the | |
* GNU General Public License (GPL) (which is different to the standard FreeRTOS | |
* license). FreeRTOS+TCP is free to download, use and distribute under the | |
* terms of that license provided the copyright notice and this text are not | |
* altered or removed from the source files. The GPL V2 text is available on | |
* the gnu.org web site, and on the following | |
* URL: http://www.FreeRTOS.org/gpl-2.0.txt. Active early adopters may, and | |
* solely at the discretion of Real Time Engineers Ltd., be offered versions | |
* under a license other then the GPL. | |
* | |
* FreeRTOS+TCP is distributed in the hope that it will be useful. You cannot | |
* use FreeRTOS+TCP unless you agree that you use the software 'as is'. | |
* FreeRTOS+TCP is provided WITHOUT ANY WARRANTY; without even the implied | |
* warranties of NON-INFRINGEMENT, MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
* PURPOSE. Real Time Engineers Ltd. disclaims all conditions and terms, be they | |
* implied, expressed, or statutory. | |
* | |
* 1 tab == 4 spaces! | |
* | |
* http://www.FreeRTOS.org | |
* http://www.FreeRTOS.org/plus | |
* http://www.FreeRTOS.org/labs | |
* | |
*/ | |
/* Standard includes. */ | |
#include <stdint.h> | |
/* FreeRTOS includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
#include "queue.h" | |
#include "semphr.h" | |
/* FreeRTOS+TCP includes. */ | |
#include "FreeRTOS_UDP_IP.h" | |
#include "FreeRTOS_Sockets.h" | |
#include "NetworkBufferManagement.h" | |
/* Hardware includes. */ | |
#include "hwEthernet.h" | |
/* Demo includes. */ | |
#include "NetworkInterface.h" | |
#if ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES != 1 | |
#define ipCONSIDER_FRAME_FOR_PROCESSING( pucEthernetBuffer ) eProcessBuffer | |
#else | |
#define ipCONSIDER_FRAME_FOR_PROCESSING( pucEthernetBuffer ) eConsiderFrameForProcessing( ( pucEthernetBuffer ) ) | |
#endif | |
/* When a packet is ready to be sent, if it cannot be sent immediately then the | |
task performing the transmit will block for niTX_BUFFER_FREE_WAIT | |
milliseconds. It will do this a maximum of niMAX_TX_ATTEMPTS before giving | |
up. */ | |
#define niTX_BUFFER_FREE_WAIT ( ( TickType_t ) 2UL / portTICK_PERIOD_MS ) | |
#define niMAX_TX_ATTEMPTS ( 5 ) | |
/* The length of the queue used to send interrupt status words from the | |
interrupt handler to the deferred handler task. */ | |
#define niINTERRUPT_QUEUE_LENGTH ( 10 ) | |
/*-----------------------------------------------------------*/ | |
/* | |
* A deferred interrupt handler task that processes | |
*/ | |
extern void vEMACHandlerTask( void *pvParameters ); | |
/*-----------------------------------------------------------*/ | |
/* The queue used to communicate Ethernet events with the IP task. */ | |
extern QueueHandle_t xNetworkEventQueue; | |
/* The semaphore used to wake the deferred interrupt handler task when an Rx | |
interrupt is received. */ | |
SemaphoreHandle_t xEMACRxEventSemaphore = NULL; | |
/*-----------------------------------------------------------*/ | |
BaseType_t xNetworkInterfaceInitialise( void ) | |
{ | |
BaseType_t xStatus, xReturn; | |
extern uint8_t ucMACAddress[ 6 ]; | |
/* Initialise the MAC. */ | |
vInitEmac(); | |
while( lEMACWaitForLink() != pdPASS ) | |
{ | |
vTaskDelay( 20 ); | |
} | |
vSemaphoreCreateBinary( xEMACRxEventSemaphore ); | |
configASSERT( xEMACRxEventSemaphore ); | |
/* The handler task is created at the highest possible priority to | |
ensure the interrupt handler can return directly to it. */ | |
xTaskCreate( vEMACHandlerTask, "EMAC", configMINIMAL_STACK_SIZE, NULL, configMAX_PRIORITIES - 1, NULL ); | |
xReturn = pdPASS; | |
return xReturn; | |
} | |
/*-----------------------------------------------------------*/ | |
BaseType_t xNetworkInterfaceOutput( NetworkBufferDescriptor_t * const pxNetworkBuffer ) | |
{ | |
extern void vEMACCopyWrite( uint8_t * pucBuffer, uint16_t usLength ); | |
vEMACCopyWrite( pxNetworkBuffer->pucBuffer, pxNetworkBuffer->xDataLength ); | |
/* Finished with the network buffer. */ | |
vReleaseNetworkBufferAndDescriptor( pxNetworkBuffer ); | |
return pdTRUE; | |
} | |
/*-----------------------------------------------------------*/ | |