Re: [lwip-users] sys_mbox_post gets wron parameter

[Jonathan Larmour]

Matthias Weisser wrote:
> Hi
>
> today I started to test around with the socket interface of lwip and
> wanted to implement a simple echo server and failed :-)
>
> I saw that socket() never returned and debugged it to sys_mbox_post
> never returned from posting the message to the mailbox. This is because
> the mbox parameter (which is a typedefed int) is wrong. The only mailbox
> which is created returns 2119 (id from the os) to the lwip stack but
> then the sys_mbox_post is called with 0 as mbox parameter. Thanks for
> any help.

This sounds like a problem in your port. In your sources you should find 
tcpip.c inside which is a function tcpip_apimsg() which is posting to 
"mbox", which is a static defined as:

 static sys_mbox_t mbox;

I bet this is the reason for the 0 parameter.

But as you will also see in that file, there is a function tcpip_init, 
which initialises that mbox. I suspect your port is not calling this 
function. Or, you are accessing the lwIP functions before the port 
initialisation has occurred.

Jifl
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