Re: [lwip-users] board hangs using dhcp

[Andrea Visinoni]

Thank you for your hints, i'll work on it!

Il 17/03/2010 19.24, address@hidden ha scritto:
> Andrea Visinoni wrote:
> > Switching to lwip 1.3.2 solved the issue running the same code.
> You're still violating threading requirements then, and can be lucky it
> works. You might run into problems with that later because two threads
> are active in the lwIP code at the same time, which is not supported. If
> you don't want to change that, I can't make you to, I can only repeat
> myself and tell you that the code below is *not* safe!
>
> Leaving away the calls to dhcp_fine_tmr and dhcp_coarse_tmr and only
> sleeping should work, too: the timer functions should be called by the
> tcpip_thread already.
>
> Simon
>
> > 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
> > >
> > >
> > > _______________________________________________
> > > lwip-users mailing list
> > > address@hidden
> > > http://lists.nongnu.org/mailman/listinfo/lwip-users
> >
> >
> > _______________________________________________
> > lwip-users mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/lwip-users
>
>
>
> _______________________________________________
> lwip-users mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/lwip-users