Hello!
I am using PPP over a serial interface to communicate with a GSM-Modem. This
works fine, but I have the following problem: After closing the PPP
connection and reestablishing the connection, my application crashes
because pbuf_alloc returns NULL. The number of reconnects the application
"survives" depends on the define MEM_SIZE (size of reserved heap memory).
My application only uses one pbuf_malloc-call:
Int SendUdpMsg (udp_pcb *pUdpConn, void *pBuff, int nLength )
{
struct pbuf* packet;
char * data;
packet=(struct pbuf *)pbuf_alloc(PBUF_TRANSPORT, nLength,
PBUF_RAM);
Assert( packet != NULL );
data=(char*)packet->payload;
memcpy(data, pBuff, nLength );
udp_send(pUdpConn, packet);
pbuf_free( packet );
return nLength;
}
As you can see I free the allocated memory directly after sending, so I
don't really know who is wasting my mem? Anyone an idea?`
Best regards,
Letschi
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