Just curious if I’ve missed something in the documentation, but my
application only needs to use UDP, so what parameter do I pass to the
netif_add() function for the input() callback when setting up the interface?
While there is a udp_input() function, its return type(void) is
incompatible with the function prototype for the netif_add() call, whereas
the tcp_input() is consistent ( an err_t return type) … so do I just use the
tcp_input() function as the parameter in that call?
I’m wondering if this is why I can’t get the netconn_recv() to work
properly. I can send data using netconn_send(), but the recv call doesn’t
seem to be working. I’ve used netcat to send UDP data to the system but
the receive call doesn’t seem to be getting it. I used a network sniffer to
verify the data on the line.
Any advice would be appreciated. I am using the atmel avr32 and the IAR
compiler. This is under FreeRTOS with the 1.2.0 version of lwIP.
Heres a code snippet from my app
pxUDPConnection = netconn_new(NETCONN_UDP);
//set ip addr of target
addr.addr = htonl(0xc0a80065); // temp 192.168.0.101
netconn_connect(pxUDPConnection,&addr,UDP_DEFAULT_PORT);
netconn_bind(pxUDPConnection, NULL, (u16_t)UDP_DEFAULT_PORT );
pxTxBuffer = netbuf_new();
netbuf_ref(pxTxBuffer,&text[0],sizeof(text));
err= netconn_send(pxUDPConnection,pxTxBuffer);
vTaskDelayUntil( &xLastFocusTime, xDelayLength );
/* Loop forever */
for( ;; )
{
while((pxRxBuffer=netconn_recv(pxUDPConnection)) != NULL)
{
recv_addr = netbuf_fromaddr(pxRxBuffer);
netbuf_data(pxRxBuffer,&data,&len);
//do something with the data
}
netconn_close(pxUDPConnection);
netconn_delete(pxUDPConnection);
}
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.20.4/1276 - Release Date: 2/13/2008
9:41 AM
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