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335 lines
10 KiB
C
335 lines
10 KiB
C
/*
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FreeRTOS V7.0.2 - Copyright (C) 2011 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* FreeRTOS tutorial books are available in pdf and paperback. *
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* Complete, revised, and edited pdf reference manuals are also *
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* available. *
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* *
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* Purchasing FreeRTOS documentation will not only help you, by *
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* ensuring you get running as quickly as possible and with an *
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* in-depth knowledge of how to use FreeRTOS, it will also help *
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* the FreeRTOS project to continue with its mission of providing *
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* professional grade, cross platform, de facto standard solutions *
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* for microcontrollers - completely free of charge! *
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* *
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* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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* *
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* Thank you for using FreeRTOS, and thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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>>>NOTE<<< The modification to the GPL is included to allow you to
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distribute a combined work that includes FreeRTOS without being obliged to
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provide the source code for proprietary components outside of the FreeRTOS
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kernel. FreeRTOS is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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*/
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/* Standard includes. */
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#include <string.h>
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/* Library includes. */
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#include "91x_lib.h"
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#include "91x_enet.h"
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "semphr.h"
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/* uip includes. */
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#include "uip.h"
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#include "uip_arp.h"
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#include "httpd.h"
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#include "timer.h"
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#include "clock-arch.h"
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/*-----------------------------------------------------------*/
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/* MAC address configuration. */
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#define uipMAC_ADDR0 0x00
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#define uipMAC_ADDR1 0x12
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#define uipMAC_ADDR2 0x13
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#define uipMAC_ADDR3 0x14
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#define uipMAC_ADDR4 0x15
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#define uipMAC_ADDR5 0x20
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/* IP address configuration. */
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#define uipIP_ADDR0 172
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#define uipIP_ADDR1 25
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#define uipIP_ADDR2 218
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#define uipIP_ADDR3 11
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/* Netmask configuration. */
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#define uipNET_MASK0 255
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#define uipNET_MASK1 255
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#define uipNET_MASK2 255
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#define uipNET_MASK3 0
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/* Gateway address configuration. */
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#define uipGATEWAY_ADDR0 172
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#define uipGATEWAY_ADDR1 25
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#define uipGATEWAY_ADDR2 218
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#define uipGATEWAY_ADDR3 1
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/* Shortcut to the header within the Rx buffer. */
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#define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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/* uIP update frequencies. */
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#define uipMAX_BLOCK_TIME (configTICK_RATE_HZ / 4)
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/* Interrupt status bit definition. */
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#define uipDMI_RX_CURRENT_DONE 0x8000
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/* If no buffers are available, then wait this long before looking again. */
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#define uipBUFFER_WAIT_DELAY ( 10 / portTICK_RATE_MS )
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#define uipBUFFER_WAIT_ATTEMPTS ( 10 )
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/* Standard constant. */
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#define uipTOTAL_FRAME_HEADER_SIZE 54
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/*-----------------------------------------------------------*/
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/*
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* Send the uIP buffer to the MAC.
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*/
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static void prvENET_Send(void);
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/*
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* Setup the MAC address in the MAC itself, and in the uIP stack.
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*/
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static void prvSetMACAddress( void );
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/*
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* Used to return a pointer to the next buffer to be used.
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*/
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extern unsigned char *pcGetNextBuffer( void );
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/*
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* Port functions required by the uIP stack.
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*/
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void clock_init( void );
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clock_time_t clock_time( void );
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/*-----------------------------------------------------------*/
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/* The semaphore used by the ISR to wake the uIP task. */
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xSemaphoreHandle xSemaphore = NULL;
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/*-----------------------------------------------------------*/
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void clock_init(void)
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{
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/* This is done when the scheduler starts. */
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}
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/*-----------------------------------------------------------*/
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clock_time_t clock_time( void )
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{
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return xTaskGetTickCount();
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}
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/*-----------------------------------------------------------*/
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void vuIP_Task( void *pvParameters )
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{
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portBASE_TYPE i;
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uip_ipaddr_t xIPAddr;
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struct timer periodic_timer, arp_timer;
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/* Create the semaphore used by the ISR to wake this task. */
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vSemaphoreCreateBinary( xSemaphore );
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/* Initialise the uIP stack. */
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timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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uip_init();
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uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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uip_sethostaddr( xIPAddr );
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uip_ipaddr( xIPAddr, uipNET_MASK0, uipNET_MASK1, uipNET_MASK2, uipNET_MASK3 );
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uip_setnetmask( xIPAddr );
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uip_ipaddr( xIPAddr, uipGATEWAY_ADDR0, uipGATEWAY_ADDR1, uipGATEWAY_ADDR2, uipGATEWAY_ADDR3 );
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uip_setdraddr( xIPAddr );
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httpd_init();
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/* Initialise the MAC. */
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ENET_InitClocksGPIO();
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ENET_Init();
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portENTER_CRITICAL();
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{
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ENET_Start();
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prvSetMACAddress();
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VIC_Config( ENET_ITLine, VIC_IRQ, 1 );
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VIC_ITCmd( ENET_ITLine, ENABLE );
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ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
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ENET_DMA->IER = uipDMI_RX_CURRENT_DONE;
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}
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portEXIT_CRITICAL();
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while(1)
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{
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/* Is there received data ready to be processed? */
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uip_len = ENET_HandleRxPkt( uip_buf );
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if( uip_len > 0 )
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{
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/* Standard uIP loop taken from the uIP manual. */
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if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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{
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uip_arp_ipin();
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uip_input();
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/* If the above function invocation resulted in data that
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should be sent out on the network, the global variable
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uip_len is set to a value > 0. */
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if( uip_len > 0 )
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{
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uip_arp_out();
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prvENET_Send();
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}
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}
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else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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{
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uip_arp_arpin();
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/* If the above function invocation resulted in data that
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should be sent out on the network, the global variable
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uip_len is set to a value > 0. */
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if( uip_len > 0 )
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{
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prvENET_Send();
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}
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}
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}
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else
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{
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if( timer_expired( &periodic_timer ) )
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{
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timer_reset( &periodic_timer );
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for( i = 0; i < UIP_CONNS; i++ )
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{
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uip_periodic( i );
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/* If the above function invocation resulted in data that
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should be sent out on the network, the global variable
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uip_len is set to a value > 0. */
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if( uip_len > 0 )
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{
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uip_arp_out();
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prvENET_Send();
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}
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}
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/* Call the ARP timer function every 10 seconds. */
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if( timer_expired( &arp_timer ) )
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{
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timer_reset( &arp_timer );
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uip_arp_timer();
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}
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}
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else
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{
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/* We did not receive a packet, and there was no periodic
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processing to perform. Block for a fixed period. If a packet
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is received during this period we will be woken by the ISR
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giving us the Semaphore. */
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xSemaphoreTake( xSemaphore, configTICK_RATE_HZ / 2 );
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}
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}
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}
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}
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/*-----------------------------------------------------------*/
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static void prvENET_Send(void)
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{
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portBASE_TYPE i;
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static unsigned char *pcTxData;
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/* Get a DMA buffer into which we can write the data to send. */
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for( i = 0; i < uipBUFFER_WAIT_ATTEMPTS; i++ )
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{
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pcTxData = pcGetNextBuffer();
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if( pcTxData )
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{
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break;
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}
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else
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{
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vTaskDelay( uipBUFFER_WAIT_DELAY );
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}
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}
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if( pcTxData )
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{
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/* Copy the header into the Tx buffer. */
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memcpy( ( void * ) pcTxData, ( void * ) uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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{
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memcpy( ( void * ) &( pcTxData[ uipTOTAL_FRAME_HEADER_SIZE ] ), ( void * ) uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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}
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ENET_TxPkt( &pcTxData, uip_len );
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}
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}
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/*-----------------------------------------------------------*/
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void ENET_IRQHandler(void)
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{
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portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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/* Give the semaphore in case the uIP task needs waking. */
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xSemaphoreGiveFromISR( xSemaphore, &xHigherPriorityTaskWoken );
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/* Clear the interrupt. */
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ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
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/* Switch tasks if necessary. */
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portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
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}
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/*-----------------------------------------------------------*/
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static void prvSetMACAddress( void )
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{
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struct uip_eth_addr xAddr;
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/* Configure the MAC address in the uIP stack. */
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xAddr.addr[ 0 ] = uipMAC_ADDR0;
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xAddr.addr[ 1 ] = uipMAC_ADDR1;
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xAddr.addr[ 2 ] = uipMAC_ADDR2;
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xAddr.addr[ 3 ] = uipMAC_ADDR3;
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xAddr.addr[ 4 ] = uipMAC_ADDR4;
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xAddr.addr[ 5 ] = uipMAC_ADDR5;
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uip_setethaddr( xAddr );
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/* Write the MAC address to the MAC. */
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ENET_MAC->MAL = ( uipMAC_ADDR3 << 24 ) | ( uipMAC_ADDR2 << 16 ) | ( uipMAC_ADDR1 << 8 ) | ( uipMAC_ADDR0 );
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ENET_MAC->MAH = ( uipMAC_ADDR5 << 8 ) | ( uipMAC_ADDR4 );
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}
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