119 lines
4.0 KiB
C
119 lines
4.0 KiB
C
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/*
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FreeRTOS+TCP V2.0.11
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Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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http://aws.amazon.com/freertos
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http://www.FreeRTOS.org
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*/
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/* Standard includes. */
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#include <stdint.h>
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "queue.h"
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#include "semphr.h"
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/* FreeRTOS+TCP includes. */
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#include "FreeRTOS_UDP_IP.h"
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#include "FreeRTOS_Sockets.h"
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#include "NetworkBufferManagement.h"
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/* Hardware includes. */
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#include "hwEthernet.h"
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/* Demo includes. */
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#include "NetworkInterface.h"
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#if ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES != 1
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#define ipCONSIDER_FRAME_FOR_PROCESSING( pucEthernetBuffer ) eProcessBuffer
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#else
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#define ipCONSIDER_FRAME_FOR_PROCESSING( pucEthernetBuffer ) eConsiderFrameForProcessing( ( pucEthernetBuffer ) )
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#endif
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/* When a packet is ready to be sent, if it cannot be sent immediately then the
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task performing the transmit will block for niTX_BUFFER_FREE_WAIT
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milliseconds. It will do this a maximum of niMAX_TX_ATTEMPTS before giving
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up. */
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#define niTX_BUFFER_FREE_WAIT ( ( TickType_t ) 2UL / portTICK_PERIOD_MS )
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#define niMAX_TX_ATTEMPTS ( 5 )
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/* The length of the queue used to send interrupt status words from the
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interrupt handler to the deferred handler task. */
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#define niINTERRUPT_QUEUE_LENGTH ( 10 )
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/*-----------------------------------------------------------*/
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/*
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* A deferred interrupt handler task that processes
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*/
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extern void vEMACHandlerTask( void *pvParameters );
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/*-----------------------------------------------------------*/
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/* The queue used to communicate Ethernet events with the IP task. */
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extern QueueHandle_t xNetworkEventQueue;
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/* The semaphore used to wake the deferred interrupt handler task when an Rx
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interrupt is received. */
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SemaphoreHandle_t xEMACRxEventSemaphore = NULL;
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/*-----------------------------------------------------------*/
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BaseType_t xNetworkInterfaceInitialise( void )
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{
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BaseType_t xStatus, xReturn;
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extern uint8_t ucMACAddress[ 6 ];
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/* Initialise the MAC. */
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vInitEmac();
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while( lEMACWaitForLink() != pdPASS )
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{
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vTaskDelay( 20 );
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}
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vSemaphoreCreateBinary( xEMACRxEventSemaphore );
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configASSERT( xEMACRxEventSemaphore );
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/* The handler task is created at the highest possible priority to
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ensure the interrupt handler can return directly to it. */
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xTaskCreate( vEMACHandlerTask, "EMAC", configMINIMAL_STACK_SIZE, NULL, configMAX_PRIORITIES - 1, NULL );
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xReturn = pdPASS;
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return xReturn;
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}
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/*-----------------------------------------------------------*/
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BaseType_t xNetworkInterfaceOutput( NetworkBufferDescriptor_t * const pxNetworkBuffer )
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{
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extern void vEMACCopyWrite( uint8_t * pucBuffer, uint16_t usLength );
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vEMACCopyWrite( pxNetworkBuffer->pucBuffer, pxNetworkBuffer->xDataLength );
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/* Finished with the network buffer. */
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vReleaseNetworkBufferAndDescriptor( pxNetworkBuffer );
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return pdTRUE;
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}
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/*-----------------------------------------------------------*/
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