
@andete tweeted:
programming a +Silicon Labs EFM32 zero gecko with python via the Bus Pirate; code at Github andete/PySWD (based on other people’s work) ; it’s really slow though; I should add fast programming mode based on the code in an0062
Get your own handy Bus Pirate for $30, including world-wide shipping. Also available from our friendly distributors.

That looks like a Bus Pirate. :)
fixed, thanks