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jeremybenn |
/*
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FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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* + Wanting to learn FreeRTOS or multitasking in general quickly *
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* + Looking for basic training, *
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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* then take a look at the FreeRTOS books - available as PDF or paperback *
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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* and 8pm GMT (although please allow up to 24 hours in case of *
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* exceptional circumstances). 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 exception to the GPL is included to allow you to distribute
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a combined work that includes FreeRTOS without being obliged to provide the
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source code for proprietary components outside of the FreeRTOS kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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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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/* Task that controls the uIP TCP/IP stack. */
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/* Standard includes. */
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#include <string.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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/* Demo includes. */
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#include "FEC.h"
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#include "partest.h"
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/*-----------------------------------------------------------*/
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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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/*-----------------------------------------------------------*/
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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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extern void timer_set(struct timer *t, clock_time_t interval);
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extern int timer_expired(struct timer *t);
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extern void timer_reset(struct timer *t);
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/*-----------------------------------------------------------*/
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/* The semaphore used by the ISR to wake the uIP task. */
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extern xSemaphoreHandle xFECSemaphore;
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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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/* Define clock functions here to avoid header file name clash between uIP
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and the Luminary Micro driver library. */
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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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/* To prevent compiler warnings. */
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( void ) pvParameters;
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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, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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uip_sethostaddr( xIPAddr );
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/* Initialise the WEB server. */
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httpd_init();
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/* Initialise the Ethernet controller peripheral. */
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vFECInit();
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for( ;; )
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{
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/* Is there received data ready to be processed? */
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uip_len = usFECGetRxedData();
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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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vFECSendData();
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}
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else
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{
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/* If we are not sending data then let the FEC driver know
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the buffer is no longer required. */
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vFECRxProcessingCompleted();
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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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vFECSendData();
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}
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else
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{
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/* If we are not sending data then let the FEC driver know
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the buffer is no longer required. */
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vFECRxProcessingCompleted();
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}
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}
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else
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{
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/* If we are not sending data then let the FEC driver know
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the buffer is no longer required. */
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vFECRxProcessingCompleted();
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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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vFECSendData();
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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( xFECSemaphore, 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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