Andy Pont wrote:
[..]ROM space is therefore limited (64K max for everything) as are the services 
that are available.


I would disable these, unless you need them of course: IP_REASSEMBLY, IP_FRAG, LWIP_ICMP, LWIP_RAW, LWIP_UDP, TCP_QUEUE_OOSEQ, TCP_OVERSIZE, LWIP_HAVE_LOOPIF, LWIP_STATS.

Also, make sure LWIP_DEBUG is not defined and make sure LWIP_NOASSERT is defined.

If your hardware supports checksum generation/check in hardware, set all CHECKSUM_GEN_*/CHECKSUM_CHECK_* defines to 0.


Simon

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