Re: [lwip-users] lwip 1.2.0 + freeRTOS

[Sirjee Rooplall]

I use ATMEL UC3 software framework + ppp on UC3A0512 device with external 
SDRAM as heap.

Whenever it crashes, i.e no other task seem to be running, I have an LED 
task that flashes the LEDS which stops.

If I stop the AVR32Studio debugger, I see that it always stops at 
QueueReceive, and tracing back, sys_arch_mbox_fetch last called, and it 
fails in the function: in the line pointed out below

The other way I can simulate this promlem is that I establish a connection, 
then I remove the antenna, hence no physical connection to the server, and I 
trigger a new connection using external trigger which will try and do a 
netconn_connect.
netconn_connect then blocks for about 20 seconds or so, and returns with 
ERR_ARBT(-3), I then retry another netconn_connect and same timeout and same 
error, now when I connect the antenna back again and establish my physical 
layer connection and then I try to establish a TCP connection using 
netconn_connect again, it fails in the same way as descibed above.

static void prvCopyDataFromQueue( xQUEUE * const pxQueue, const void 
*pvBuffer )
{
if( pxQueue->uxQueueType != queueQUEUE_IS_MUTEX )
{
 pxQueue->pcReadFrom += pxQueue->uxItemSize;
 if( pxQueue->pcReadFrom >= pxQueue->pcTail )
 {
  pxQueue->pcReadFrom = pxQueue->pcHead; // ***** FAILS HERE ****
 }
 memcpy( ( void * ) pvBuffer, ( void * ) pxQueue->pcReadFrom, ( unsigned ) 
pxQueue->uxItemSize );
}
}


Kind Regards, Sirjee Rooplall Figment Design laboratories (Pty) Ltd mailto: 
address@hidden Mobile: +27 (0)83 230 8466
----- Original Message ----- 
From: "Kieran Mansley" <address@hidden>
To: "Mailing list for lwIP users" <address@hidden>
Sent: Tuesday, January 26, 2010 2:59 PM
Subject: Re: [lwip-users] lwip 1.2.0 + freeRTOS


> On Mon, 2010-01-25 at 11:15 +0200, Sirjee Rooplall wrote:
> > Hi, I am using lwip 1.2.0 under freeRTOS, I am also using PPP +
> > external modem to establish a PPP connection to a server over GPRS.
> >
> > All works well, provided I can establish a connection to the server
> > and the connection is closed.
> >
> > If for some reason the connection is not closed, i.e the TCP/IP stack
> > does not get to the FIN_2 closing state, all hell breaks loose and my
> > system crashes when I attempt to re-connect to the server.
>
> Could you give more details about where it goes wrong when you attempt
> to re-connect?
>
> Thanks
>
> Kieran
>
>
>
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