I am running lwIP 1.2.0 on an Atmel AVR32 UC3A.
I am trying to simply dump some data using the Netconn API to HyperTerm
running on my PC. After a few transmissions the entire stack locks up. I
had a similar problem a while back on a different project while attempting
to do this with the Socket API. It turns out that I had to call lwip_recv()
after each lwip_send() or else the responses from HyperTerm would overload
the stack. I have done the following below, but I still get a lockup after
a few transmits. Any ideas?
Here is a reduced version of my task that causes the lockup
portTASK_FUNCTION( vDspLowBandTask, pvParameters )
{
dsp32_t downsample[DOWNSAMPLE_SIZE];
struct netbuf *pxRxBuffer;
struct netconn *pxNewConnection;
struct ip_addr pxRemoteAddr;
pxNewConnection = netconn_new(NETCONN_TCP);
pxRemoteAddr.addr = inet_addr("192.168.0.10");
netconn_connect(pxNewConnection, &pxRemoteAddr, 23);
for ( ;; )
{
netconn_write(pxNewConnection, downsample, (sizeof(dsp32_t) *
DOWNSAMPLE_SIZE), NETCONN_NOCOPY);
pxRxBuffer = netconn_recv(pxNewConnection);
netbuf_delete(pxRxBuffer);
}
}
Josh Rothstein
Embedded Systems Engineer
DCX-CHOL Enterprises, Inc.
12831 South Figueroa Street
Los Angeles, CA 90061-1157
310.516.1692x134
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