[riot-notifications] [RIOT-OS/RIOT] Introduce Atmel XMEGA CPU (#15703)

Gerson Fernando Budke notifications at github.com
Sat Jan 2 23:53:58 CET 2021


Thanks for the feedback @maribu !

> > The below link is a proposal to split atmega_ into atmega_ and avr8_ to pave the path to introduce atxmega_.
> 
> This sounds very reasonable to me. IMO it would be the easiest to just PR the change to get feedback for it.

Understood! I need read docs to make sure I'll follow procedures when open PR.

> 
> > `BOARD=wm200-xmegaa3 make all flash term`
> 
> Can you provide a link for this board?

This board was developed by me and there is no public link. Attached a PDF for reference.
[WM-200.pdf](https://github.com/RIOT-OS/RIOT/files/5760964/WM-200.pdf)


> Alternatively (and IMO preferably), would you consider adding the [XMEGA-A3BU Xplained](https://www.microchip.com/DevelopmentTools/ProductDetails/PartNo/ATXMEGAA3BU-XPLD) as first board for the ATxmega256A3BU MCU?

Sure, no big deal!

BTW, I added a missing commit couple minutes ago at _introduce_avr8_xmega_. It reworks a little bit the context switch and thread stack init. With that, I hope, all AVR-8 will work without looking any device itself.

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