Re: [lwip-users] Port to Stellarisware

[Ben Stuyts]

Hi Nathan,

> On 20 Dec 2017, at 16:31, Nathan Hartman <address@hidden> wrote:
> 
> On Dec 20, 2017, at 10:17 AM, Ben Stuyts <address@hidden> wrote:
>> 
>> TI’s Stellarisware library for the LM3S series chips uses lwIP v1.3.1. By 
>> any chance, has anybody ported lwIP v2.0.3 to Stellarisware?
>> 
>> They basically #include all the lwIP *.c files into a single lwiplib.c file 
>> and compile that. Also not sure if their own interface/porting layer code is 
>> compatible with v2.0.3.
> 
> Not sure if LM3S is the same family or related to TI's Tiva-C a.k.a. TM4C 
> family (TI bought Stellaris and renamed it to Tiva) but what Ben describes is 
> exactly how TivaWare implements lwIP.

Yes, same thing. Cortex M3 vs M4 core is the main difference. TI ran into 
manufacturing problems with the LM3S series and developed the TM4C as a 
successor. TI stopped support for Stellarisware for the LM3S series and then 
renamed/forked it to TivaWare (or some such) for the TM4C chips. In the 
beginning it was more or less compatible, but I believe (!) it has diverged 
quite a bit now.

> TivaWare is TI's driver library / bare bones framework for the TM4C family. 
> It's stuck on lwIP version 1.4.1. As far as I know TI did not express any 
> interest in updating TivaWare to use newer lwIP. 

LM3S series is NRND, and I wouldn’t touch the TM4C series with a ten feet pole 
because of that. But we have a couple of designs with an LM3S8938 that I’d like 
to update to get access to the latest lwIP features.

> We want to upgrade our code to 2.0.3 as well. If anyone knows of a working 
> port for this platform or what adaptations must be made then please point us 
> to it. Ben, if none exists then perhaps we can combine our efforts.

Definitely interested. But if anybody has already done some work on it, please 
let us know.

Thanks,
Ben