RE: [lwip-users] lwIP stack with MODBUS TCP/IP on application layer

[Pettinato, Jim]

I've implemented Modbus/TCP on multiple products using the raw API... but the 
solution is kind of kludgy because we had already supported serial Modbus in 
previous iterations of those product lines, so we bolted onto that. I've yet to 
generalize it for the community, and see no opportunity to do so in the near 
future, though I would like to eventually.



-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Christian Walter
Sent: Tuesday, July 20, 2010 1:18 PM
To: Mailing list for lwIP users
Subject: Re: [lwip-users] lwIP stack with MODBUS TCP/IP on application layer

address@hidden wrote:

Hello,

Our FreeMODBUS stack (http://www.freemodbus.org) support lwIP in the 
STR71X/lwIP/PPP example. Should be fairly straight forward to update to 
a recent lwIP port.

If you require commercial support for this feel free to contact us too.

Kind regards,
        Christian

>   There should be no problem using lwIP for a MODBUS TCP/IP application. 
> You don't even need an OS for that, as long as you write the application 
> with the raw API (a.k.a. callback API). I fact, we use it for something 
> quite similar, though not exactly MODBUS.
> 
> However, I don't know of an existing MODBUS TCP/IP application for lwIP, 
> so you will need to write it on your own, I'm afraid.
> 
> Simon
> 
> 
> ORIO, Gabriel wrote:
>>
>> Hi everybody !
>>
>> Above all I would like to thank you all for your work. I found it very 
>> useful for me. I'm quite new in this field, but I'm getting informed 
>> about the things I need.
>>
>> I would like to know :
>>
>>  
>>
>> it is possible tu use the lwIP stack with the MODBUS TCP/IP 
>> application protocol ?
>>
>>  
>>
>> If it is possible, do I need an API ? (in the MODBUS TCP/IP 
>> applications we just need to read and write registers, nothing more)
>>
>>  
>>
>> Do I always need an operating system emulation layer when implementing 
>> a lwIP ?
>>
>>  
>>
>> As I'm not an expert I would like to begin implementing a very simple 
>> (but complete) version of the lwIP.
>>
>>  
>>
>> I thank you in advance for your kind answers.
>>
>>  
>>
>>  
>>
>> Gabriele ORIO
>>
>> Axane, Air Liquide
>>
>>  
>>
>>
>> _______________________________________________
>> lwip-users mailing list
>> address@hidden
>> http://lists.nongnu.org/mailman/listinfo/lwip-users
> 
> 
> ------------------------------------------------------------------------
> 
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-- 
+--------------------------------------+-----------------------------------+
Embedded Solutions                     | DI Christian Walter
Lorenz Böhler Gasse 4/4, A-1200 Wien   | address@hidden
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