At the risk of asking a foolish question, is there something I’m not doing
correctly here to get a simple UDP transmit using the api layer of lwip?
I’m new to using lwip ( and FreeRTOS) so this has been a bit of a steep
learning curve.
In my Ethernet module, the setup has occurred:
sys_init();
mem_init();
memp_init();
pbuf_init();
netif_init();
ip_init();
udp_init();
tcpip_init( prvEthernetConfigureInterface, NULL );
where in the prvEthernetConfigureInterface func:
netif_add(&MACB_if, &xIpAddr, &xNetMask, &xGateway, NULL, ethernetif_init,
tcpip_input);
/* make it the default interface */
netif_set_default(&MACB_if);
/* bring it up */
netif_set_up(&MACB_if);
dhcp_start(&MACB_if);
After a few seconds time to give DHCP a chance ( which does get an ip
address ), I spawn another task, where I do the following:
portTASK_FUNCTION( vUDPListener, pvParameters )
{
struct netbuf *pxRxBuffer,*pxTxBuffer;
struct netconn *pxUDPConnection;
struct ip_addr* addr;
char* data;
err_t err;
u16_t len;
u16_t portnum;
char text[] = "A TEXT STRING";
/* Create a new udp connection handle */
pxUDPConnection = netconn_new( NETCONN_UDP );
netconn_bind(pxUDPConnection, NULL, (u16_t)UDP_DEFAULT_PORT );
pxTxBuffer = netbuf_new();
netbuf_ref(pxTxBuffer,text,sizeof(text));
err= netconn_send(pxUDPConnection,pxTxBuffer);
…
}
Not only does this not send any data, it seems to lock up the rest of the
app. This is a task that I have added to an existing demo app for the Atmel
AVR32UC3A, on the EVK1100.
Thanks for anyone who points out the stupid thing I’ve done/not done
here…….
-Ben
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.19.21/1265 - Release Date: 2/7/2008
11:17 AM
_______________________________________________
lwip-users mailing list
[email protected]
http://lists.nongnu.org/mailman/listinfo/lwip-users
