[En-Nut-Discussion] Any Work-in-progress or else for the XMEGA

[Ulrich Prinz]

Hi Uwe,

to be honest...

When Atmel started to introduce these chips round about two or three 
years ago, I was very interested and even took a seminar on them. But as 
time faded and none of the chips where released...

Now I prefer STM32F series from STM as they give 32 Bit Power by exactly 
the same cost or even less compared to the AVRs. ATxmega could have been 
a great thing but it needed much to long time to appear.

So we do now run sensors and other slow things on CortexM3 but down 
clocked to 16MHz or less and we save a lot of flash as we have 16/32 Bit 
values to be calculated what normally cause overhead on systems with 
lower architecture size.
So for a CAN connected Sensor I need 4.2mA at 16MHz and know that I can 
even scale down to 8MHz but also fire up to 60Mhz and I can use the same 
Nut/OS code for anything from 32pin to 10x pin devices of the same 
family. And I propose that I can even use 99% of the code with the next 
generation of STM32F2xx with up to 100+MHz. (But I still miss the 
dev-kit... STM: Hello!)

Best regards
Ulrich

Am 08.03.2011 18:39, schrieb Uwe Bonnes:
> Hello,
>
> has anybody already done some work about an XMEGA port for ethernut and is
> willing to share even unfinish work?
>
> In the next days, I will implement some not to complicated functionality
> with an XMEGA. I refrain to start from scratch for an Ethernut port, but if
> some start/work has already been done, I probably would try to improve the
> port.
>
> Thanks