> On Behalf Of V?ctor Mateo We have an annoying error using lwIP.
Our software is a NIOSII C/C++ application, without Operating System and
Superloop.
> We are experiencing intermittent errors while trying to
receive an UDP message, proccess data and send this proccesed data
back.
-Assertion "bad pbuf type" failed at line 548 in
../lwIP/src/core/pbuf.c t;ref == 1" failed at line 599 in
../lwIP/src/core/ipv4/ip.c
e see the UDP packet handling code? It sounds
like memory overwriting or using a NULL pbuf. Bill :
>
>
------------------------------------------------------------------
-------------------------------------------------------------
static void UDP_decoder(void *arg, struct udp_pcb *pcb_new, struct
pbuf *p, struct ip_addr *addr, u16_t port)
{
alt_u8 *param_pointer;
Rx_Command= NONE;
LWIP_UNUSED_ARG(arg);
if(p == NULL)
return;
memcpy ( buf, p->payload, MAX_UDP_LENGHT );
if( !strncmp ( (void*)
HEADER_PARAMS, (void*)buf,6 ) ) {
//:More Code Here://
}
else if(
!strncmp ( (void*) HEADER_PARAM2, (void*)buf,6 ) ) {
//:More Code
Here://
}
pbuf_free(p);
udp_remove(pcb_new);
}
void Rx_UDP() {
struct udp_pcb *pcb_new;
pcb_new = udp_new();
udp_bind(pcb_new,
IP_ADDR_ANY, FPGA_PORT);
udp_recv(pcb_new , UDP_decoder,
NULL);
}
------------------------------------------------------------------------------------------------------------------------------------------------
We call Rx_UDP() in an infinite while(1), so we can update parameters
anytime we send it trough the host.
Maybe I am not "closing" fine pbuf
or pcb? Should I use "udp_disconnect(pcb_new)" or anything else?
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