Support for Adafruit's ATSAMD21G18 used on Feather M0 Lora board

[Pablo Mora]

Hi,

I can see ATSAMD21 family is supported, although I can't bossa to work on my Adafruit's Feather M0 Lora board.

https://www.adafruit.com/product/3178

In case it can be useful for anyone, I installed bossa on fedora 35. Had to install first the following dependences:

sudo dnf install wxGTK3-devel
sudo dnf install readline-devel

Note that these are needed for the GUI, it may be possible to build w/o them if, like me, plan to use the bossa cli

Anyway, using the bossa shell I get the following when trying to connect to the feather

bossa> connect /dev/ttyACM0
Connected to device on /dev/ttyACM0
Device is not supported