Thanks,

I was reading the sys_arch.txt file which was not fully clear:

- err_t sys_mbox_trypost(sys_mbox_t mbox, void *msg)

 Try to post the "msg" to the mailbox. Returns ERR_MEM if this one
 is full, else, ERR_OK if the "msg" is posted.

marko

Goldschmidt Simon wrote:
For how long should the sys_mbox_trypost() pend if there is
no free space in the mailbox ? Should it return immediately
with ERR_MEM or it should pend for some time ?

Yes, it should return immediately.

-> http://lwip.scribblewiki.com/LwIP_version_1.3.0_release_notes


Simon


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