Re: [lwip-users] Lwip 1.4.1 initialization

[address@hidden]

On 17.03.2018 00:08, Keith Rubow wrote:
> I am trying to use LwIP for the first time, and am having trouble
> figuring out what I need to do to properly initialize it.
>
> I am trying to run LwIP version 1.4.1

Hell, 1.4.1 is more than five years old. If you start something new, use 
*at least* 2.0.3! Even better, use git master, the next release is not 
too far away and will be based on that.

> [..] I wish to use the netconn
> api in a multi-threaded system. My operating system is a very simple
> cooperative multitasking system with no preemption and no task priorities.
A cooperative OS might *not* be the best for using the netconn API. 
Don't expect great performance.

> [..]
> Now I am trying to get LwIP 1.4.1 initialized. I am doing the following:
>
> tcp_init(NULL,NULL);
> netif_add(&wiznetif,&ipaddr,&netmask,&gateway,NULL,&ethernetif_init,&tcpip_input);
>
> Where wiznetif is a netif struct, and the IP addresses are initiallized
> to my desired static IP, netmask and gateway. When I run my code, I get
> as far as calling netif_add, but netif_add never returns.

Are you sure about netif_add() not returning?

> It seems to be
> hung in sys_arch_mbox_fetch

No. Netif_add() won't call sys_arch_mbox_fetch() in any case. I guess 
there's something wrong in your port or your debugger.

Simon