Am 11.12.2019 um 18:55 schrieb Ranran:
Hello,

I use a simple echo udp example for STM32 Hal , with stm32h743 EVAL.
I encounter exception (it shows as unaligned exception, but the
address is not anything we allocated.

This failure happen if I increase the packet size from 1704 to 1744 !

tcip_thread->tcip_timeouts_mbox_fetch->sys_check_timeouts->lwip_cyclic_timer->ip_reass_timr->ip_reass_free_complete_datagram
exception error of type unaligned access.

I tried to increase various  size in lwipopts.h but nothing helps.

Is it stm32 issue ?
Any idea ?

Doesn't ring a bell. Last time I tested, fragmentation/reassembly worked
just fine, so I expect this is a platform/config specific issue.

Regards,
Simon

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