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jeremybenn |
/*
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* Copyright (c) 2001-2003, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: uIP_Task.c 2 2011-07-17 20:13:17Z filepang@gmail.com $
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*
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*/
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#include <stdlib.h> /* For system(). */
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#include <stdio.h> /* For printf(). */
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#include "FreeRTOS.h"
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#include "task.h"
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#undef HTONS
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#include "cs8900a.h"
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#include "uip.h"
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#include "uip_arp.h"
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#include "tapdev.h"
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#include "httpd.h"
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static const struct uip_eth_addr ethaddr = {{0x00,0x00,0xe2,0x58,0xb6,0x6b}};
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#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
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#define uipSHORT_DELAY ( ( portTickType ) 2 / portTICK_RATE_MS )
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#ifndef NULL
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#define NULL (void *)0
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#endif /* NULL */
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static volatile portTickType start, current;
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#define RT_CLOCK_SECOND ( configTICK_RATE_HZ / 2 )
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/*-----------------------------------------------------------------------------------*/
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/**
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* \internal
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* A real-time clock.
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*
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* This example main() function uses polling of a real-time clock in
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* order to know when the periodic processing should be
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* performed. This is implemented using this function - rt_ticks(). In
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* this example unix implementation, it simply calls the unix function
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* gettimeofday() which returns the current wall clock time.
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*
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* For a micro-controller, a simple way to implement this function is
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* by having a counter that is incremented by a timer interrupt and
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* read by this function.
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*
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* The macro RT_CLOCK_SECOND should be defined as the approximate
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* number of ticks that are elapsed during one second.
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*/
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#define rt_ticks xTaskGetTickCount
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/*-----------------------------------------------------------------------------------*/
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void vuIP_TASK( void *pvParameters )
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{
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u8_t i, arptimer;
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u16_t addr[2];
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int z = 3;
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/* Initialize the uIP TCP/IP stack. */
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uip_init();
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uip_arp_init();
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/* Initialize the device driver. */
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cs8900a_init();
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/* Initialize the HTTP server. */
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httpd_init();
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start = rt_ticks();
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arptimer = 0;
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while(1)
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{
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/* Let the network device driver read an entire IP packet
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into the uip_buf. If it returns > 0, there is a packet in the
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uip_buf buffer. */
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uip_len = cs8900a_poll();
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if(uip_len > 0)
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{
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/* A packet is present in the packet buffer. We call the
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appropriate ARP functions depending on what kind of packet we
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have received. If the packet is an IP packet, we should call
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uip_input() as well. */
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if(BUF->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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cs8900a_send();
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}
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}
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else if(BUF->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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cs8900a_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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/* The poll function returned 0, so no packet was
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received. Instead we check if there is time that we do the
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periodic processing. */
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current = rt_ticks();
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if((u16_t)(current - start) >= (u16_t)RT_CLOCK_SECOND / 2)
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{
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start = current;
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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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cs8900a_send();
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}
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}
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#if UIP_UDP
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for(i = 0; i < UIP_UDP_CONNS; i++)
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{
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uip_udp_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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tapdev_send();
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}
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}
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#endif /* UIP_UDP */
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/* Call the ARP timer function every 10 seconds. */
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if(++arptimer == 20)
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{
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uip_arp_timer();
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arptimer = 0;
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}
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}
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else
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{
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vTaskDelay( uipSHORT_DELAY );
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} }
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}
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}
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/*-----------------------------------------------------------------------------------*/
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