Re: [lwip-users] using lwip without an OS

[Paul Riley]

Hi Leon,

I'm considering using LWIP in a non OS environment. Looking at the mailing list 
archives I found this posting from February, giving some hints on how to do 
this and offering some useful examples. Is it possible for me to get these 
examples (or something similar).

Thanks very much,

Paul Riley

>Hello Benjamin, 
>> I am investigating the possibility of using lwip in a non-OS environment. I 
>> ... 
>> find from the mail archives. I confess that I'm still somewhat baffled by 
>> what is minimally necessary to get such a system up and running. I 
>> understand that I'll need to create an abstraction layer sys_arch.c along 
>> the lines of the one presented in the 6502 port, and I'll need of course to 
> For a non-OS environment the sys_arch layer remains empty. You would #define 
> NO_SYS and the sys_arch functions remain empty. 
>> provide a driver for my network interface. Beyond that, I had assumed that 
>> the interface between lwip code and the stuff that comprises my application, 
>> would essentially consist of calling some lwip initialization routines, and 
>> then calling some lwip functions from a main loop to drive the tcp/ip code. 
> Exactly! 
>> Does anyone have a working example of this ? I don't care for what 
> Not a complete example that compiles out of the box, but I can send you: 
>1) a list with the subset of the lwIP files that you will need 
>2) the initialization 
>3) a simple HTTP client using the raw_api 
>I'll send you this in 10 hours from now, when I'm back at work. 
>Leon.