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[lwip-users] Question about Lwip Porting to 7x256 with Dm9161 PHY

From: zhou yi
Subject: [lwip-users] Question about Lwip Porting to 7x256 with Dm9161 PHY
Date: Fri, 18 Jul 2008 20:02:38 +0800

Dear all:
    I use At91sam7x256-ek board to port lwip, which use Dm9161 PHY, IDE tools is IAR 4.33. If I only initialize the LwIP stack, I can ping the board. This maybe mean the lwip porting is ok, in this porting project I only call the lwip functions: sys_init(), mem_init(), memp_init(), pbuf_init(), netif_init(), tcpip_init(), IP4_ADDR(), netif_add(), netif_set_default(), netif_set_up().
    But when I do more job like writting a HTTP daemon like belows:
 struct netconn  *__pstConn, *__pstNewConn;
 struct netbuf *__pstNetbuf;
 uprintf("\n\rStart Httpd Daemon.\r\n");
 __pstConn = netconn_new(NETCONN_TCP);
 if (NULL == __pstConn)
  uprintf("netconn_new NETCONN_TCP failed\r\n");
 uprintf("Start bind to 80 port\r\n");
 netconn_bind(__pstConn, NULL, 80);
 uprintf("Start listening\r\n");
  __pstNewConn = netconn_accept(__pstConn);
  if(__pstNewConn != NULL)
   __pstNetbuf = netconn_recv(__pstNewConn);
   if(__pstNetbuf != NULL)
    netconn_write(__pstNewConn, "HTTP/1.1 200 OK\r\nContent-type: text/html\r\n\r\n", 44, NETCONN_COPY);
    netconn_write(__pstNewConn, "<body><h1>This is LWIP TCP Test!</h1></body>", 40, NETCONN_COPY);
   while(netconn_delete(__pstNewConn) != ERR_OK)
    OSTimeDlyHMSM(0, 0, 1, 0);
after recompiling and downloading to board, not only ping is not available, but also can not visit the web page. After adding debug information, I find when I call netconn_new() function, then turn to function sys_mbox_fetch() function, and then call sys_arch_timeouts() function which is implemented in sys_arch.c and this time board never returned.
    Who knows why? Thanks.

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