"Steve at fivetrees" <steve@NOSPAMTAfivetrees.com> wrote in message 
news:p7adnTAngOg_hELZRVnyhw@pipex.net...
> "Alf Katz" <alfkatz@iremove.the.bloody.obvious.ieee.org> wrote in message 
> news:44deb211$0$11971$afc38c87@news.optusnet.com.au...
>> Horses for courses!  The rabbit's great for one offs, short runs, or high 
>> margin developments where cost of goods is not too important, but 
>> development time is critical, particularly when you use the Z-World 
>> development boards.  Often just a matter of tying together their 
>> pre-built modules using the C-like language they provide.
>
> Fair comment, but the clincher for me was the inclusion of a TCP/IP stack. 
> Not something I wanted to write from scratch. I did look at a variety of 
> embedded TCP/IP stacks, but I didn't find anything that inspired 
> confidence that didn't cost an arm and a leg. (If I missed something, pray 
> tell.)
>
> Steve
> http://www.fivetrees.com
You're probably right Steve,
      The project for which I used the Rabbit on a Z-world board didn't need 
TCP/IP, but it was for a small run and completed ahead of schedule and under 
budget.  I needed the graphic display and this was similarly easy to get up 
and running.
      I've written UDP/IP stack almost from scratch when space was limited, 
that was bad enough (took about 1.5 months).  Both LWIP and UIP are worth 
looking at, but I'm guessing you did, and these are the ones you that didn't 
inspire confidence.  They do come with source, though.

Cheers,
Alf

"Alf Katz" <alfkatz@iremove.the.bloody.obvious.ieee.org> wrote in message 
news:44deb211$0$11971$afc38c87@news.optusnet.com.au...
>
> "Adib Taraben" <taraben.a@st-innovation.com> wrote in message 
> news:44ddf3fc$0$10143$9b4e6d93@newsspool2.arcor-online.net...
>> Does someone has experience with rabbit uC ?
>>
>> I am looking for an uC with many communication ports (serials/CAN and 
>> ethernet). The rabbit looks like a good choice.
>> How does it compares to the ARM7TDMI?
>>
>> Thx, Adib.
>> ---
> Horses for courses!  The rabbit's great for one offs, short runs, or high 
> margin developments where cost of goods is not too important, but 
> development time is critical, particularly when you use the Z-World 
> development boards.  Often just a matter of tying together their pre-built 
> modules using the C-like language they provide.

Fair comment, but the clincher for me was the inclusion of a TCP/IP stack. 
Not something I wanted to write from scratch. I did look at a variety of 
embedded TCP/IP stacks, but I didn't find anything that inspired confidence 
that didn't cost an arm and a leg. (If I missed something, pray tell.)

Steve
http://www.fivetrees.com

"Adib Taraben" <taraben.a@st-innovation.com> wrote in message 
news:44ddf3fc$0$10143$9b4e6d93@newsspool2.arcor-online.net...
> Does someone has experience with rabbit uC ?
>
> I am looking for an uC with many communication ports (serials/CAN and 
> ethernet). The rabbit looks like a good choice.
> How does it compares to the ARM7TDMI?
>
> Thx, Adib.
> ---
Horses for courses!  The rabbit's great for one offs, short runs, or high 
margin developments where cost of goods is not too important, but 
development time is critical, particularly when you use the Z-World 
development boards.  Often just a matter of tying together their pre-built 
modules using the C-like language they provide.

Very expensive CPUs in a production environment when compared against (say) 
a Philips Arm with 512k of onboard Flash and 32k of onboard RAM, at about 
half the price.  The core modules are, of course, even more.  Also a 50MHz 
Rabbit is not in the same performance league as a 50MHz ARM.

Cheers,
Alf

>Does someone has experience with rabbit uC ?
>
>I am looking for an uC with many communication ports (serials/CAN and 
>ethernet). The rabbit looks like a good choice.

The biggest advantage of the Rabbits are that you get going very fast
with their core modules at very competitive prices and their starter
kits making it more or less a plug and play experience. It's an 8
bitter though, so don't expect very high performance.

>How does it compares to the ARM7TDMI?

The ARM is a different league being a 32 biter. It's therefore more
complex to handle and from what I know core modules equipped with ARMs
also tend to be more expensive in the end.

HTH

Markus

"Adib Taraben" <taraben.a@st-innovation.com> wrote in message 
news:44ddf3fc$0$10143$9b4e6d93@newsspool2.arcor-online.net...
> Does someone has experience with rabbit uC ?
>
> I am looking for an uC with many communication ports (serials/CAN and 
> ethernet). The rabbit looks like a good choice.

Works for me. Very well indeed, actually. The Dynamic C environment is a 
bit, er, different; but does seem reliable.

> How does it compares to the ARM7TDMI?

No idea, I'm afraid.

Steve
http://www.fivetrees.com