Re: [lwip-users] board hangs using dhcp

[Andrea Visinoni]

Switching to lwip 1.3.2 solved the issue running the same code.

Il 04/03/2010 16.13, address@hidden ha scritto:
> It seems you are violating threading requirements: calling the netif_*
> and dhcp_* functions from any other thread than the tcpip_thread is not
> allowed! And if the code below *would* run in that thread context, it
> would block RX-packets: the tcpip_thread must process incoming packets
> from its mbox.
>
> If you are running multithreaded, you have to use tcpip_callback to get
> into the tcpip_thread and call dhcp_start from there. Also, the timer
> functions will get called automatically by the tcpip_thread, so there's
> no need to call them on your own.
>
> Simon
>
>
> Andrea Visinoni wrote:
> > Hi,
> > i have a simple webserver task on my custom board (at91sam7x256) using
> > freertos and lwip 1.2.0.
> > Using static ip i have no problems, but using dhcp my board hangs after
> > the very first send (using socket api or netconn_write...same problem).
> > The port is open, the connection is accepted, but when i start sending
> > data to client in several sends, only the first one succeed.
> >
> > this is my dhcp start code:
> >
> > IP4_ADDR(&xIpAddr,0,0,0,0);
> > IP4_ADDR(&xNetMast,0,0,0,0);
> > IP4_ADDR(&xGateway,0,0,0,0);
> >
> > netif_add(&EMAC_if,&xIpAddr,&xNetMast,&xGateway, NULL,
> > ethernetif_init, tcpip_input);
> >
> > // make it the default interface
> > netif_set_default(&EMAC_if);
> >
> > // Avvio DHCP
> > dhcp_start(&EMAC_if);
> >
> > // DHCP negotiation
> > int mscnt = 0;
> > while (EMAC_if.ip_addr.addr == 0)
> > {
> > sys_msleep(DHCP_FINE_TIMER_MSECS);
> > dhcp_fine_tmr();
> > mscnt += DHCP_FINE_TIMER_MSECS;
> > if (mscnt>= DHCP_COARSE_TIMER_SECS * 1000)
> > {
> > dhcp_coarse_tmr();
> > mscnt = 0;
> > }
> > }
> >
> > Any hints?
> >
> > Best regards
> > Andrea
> >
> >
> > _______________________________________________
> > lwip-users mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/lwip-users
>
>
>
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