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Please see this example file to get some idea about
how to use raw api .There is some documentation also avaialble on
website
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/* * Copyright (c) 2001,2002 Florian Schulze. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the authors nor the names of the contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * test.c - This file is part of lwIPtest * */
#include <stdio.h>
#include <stdarg.h>
#include <time.h>
#include <string.h>
#include <conio.h>
#include "lwip/debug.h"
#include "lwip/mem.h"
#include "lwip/memp.h"
#include "lwip/sys.h"
#include "lwip/stats.h"
#include "lwip/tcpip.h"
#include "netif/loopif.h"
#include "arch/perf.h"
//#include "httpd.h"
//#include "ftpd.h"
//#include "fs.h"
void ethernetif_init(struct netif *netif);
int init_adapter(int adapter_num);
void shutdown_adapter(void);
void update_adapter(void);
int dbg_printf(const char *fmt, ...)
{
va_list v;
int r;
va_start(v, fmt);
r = vfprintf(stderr,fmt, v);
va_end(v);
return r;
}
static err_t netio_recv(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t
err)
{
if (err == ERR_OK && p != NULL)
{
tcp_recved(pcb, p->tot_len);
pbuf_free(p);
}
else
pbuf_free(p);
if (err == ERR_OK && p == NULL)
{
tcp_arg(pcb, NULL);
tcp_sent(pcb, NULL);
tcp_recv(pcb, NULL);
tcp_close(pcb);
}
return ERR_OK;
}
static err_t netio_accept(void *arg, struct tcp_pcb *pcb, err_t err)
{
tcp_arg(pcb, NULL);
tcp_sent(pcb, NULL);
tcp_recv(pcb, netio_recv);
return ERR_OK;
}
void netio_init(void)
{
struct tcp_pcb *pcb;
pcb = tcp_new();
tcp_bind(pcb, IP_ADDR_ANY, 18767);
pcb = tcp_listen(pcb);
tcp_accept(pcb, netio_accept);
}
static struct netif netif;
unsigned long ReceiveThread( void )
{
int last_time;
int timer1;
int timer2;
last_time=clock();
timer1=0;
timer2=0;
while(1)
{
int cur_time;
int time_diff;
cur_time=clock();
time_diff=cur_time-last_time;
//printf("%d %d\n",CLOCKS_PER_SEC,time_diff);
if (time_diff>0)
{
last_time=cur_time;
timer1+=time_diff;
timer2+=time_diff;
}
if (timer1>200)
{
//printf("Fast timer called\n");
tcp_fasttmr();
timer1=0;
}
if (timer2>450)
{
//printf("Slow timer called\n");
tcp_slowtmr();
timer2=0;
}
update_adapter();
}
}
void main_loop()
{
struct ip_addr ipaddr, netmask, gw;
int last_time;
int timer1;
int timer2;
int done;
IP4_ADDR(&gw, 192,168,5,11);
IP4_ADDR(&ipaddr, 192,168,5,112);
IP4_ADDR(&netmask, 255,255,255,0);
if (init_adapter(2) != 0)
return;
netif_set_default(netif_add(&netif, &ipaddr, &netmask, &gw, NULL,
ethernetif_init,
ip_input));
netif_set_up(&netif);
/*
IP4_ADDR(&gw, 127,0,0,1);
IP4_ADDR(&ipaddr, 127,0,0,1);
IP4_ADDR(&netmask, 255,0,0,0);
netif_add(&ipaddr, &netmask, &gw, loopif_init,
ip_input);
*/
tcp_init();
udp_init();
ip_init();
//httpd_init();
netio_init();
//ftpd_init();
StartThread(ReceiveThread);
getchar();
getchar();
shutdown_adapter();
return;
}
void bcopy(const void *src, void *dest, int len)
{
memcpy(dest,src,len);
}
void bzero(void *data, int n)
{
memset(data,0,n);
}
int main(void)
{
setvbuf(stdout,NULL,_IONBF,0);
#ifdef PERF
perf_init("/tmp/lwip.perf");
#endif /* PERF */
#ifdef STATS
stats_init();
#endif /* STATS */
sys_init();
mem_init();
memp_init();
pbuf_init();
//tcpdump_init();
printf("System initialized.\n");
main_loop();
return 0;
}
u16_t
sys_arch_mbox_fetch(sys_mbox_t mbox, void **data, u16_t timeout)
{
return 0;
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