Hi there.
First at all, thanks a lot by your reply.
PlatformIO supports the Atmel sam family of processors, zero included :
https://github.com/platformio/platform-atmelsamI made a little try to get tinyscreen+ working on it, and I get it compiling with a few warnings, but I been unable to make upload to work from inside platformio.
Finaly uploading the firmware with bossac in command line it seems to work perfectly.
I really hope you make a official release, working with the Arduino IDE is a pain for the developer, while platformio gives the posibility of working with Atom, Eclipse or Clion what gets the work a lot easier. By the other hand it opens a new way to show your really great new product to a broader group of developers.
Thanks a lot again by your time and your really great work!!!