Plug and Play JTAG/SWD USB programmer and debugger with a built in GDB server and TTL level UART to USB adapter.
What is it?
Black Magic Probe Mini V2.1 (BMPM2) designed by 1BitSquared in collaboration with Black Sphere Technologies is a JTAG and SWD Adapter used for programming and debugging ARM Cortex MCUs. Its the best friend of any ARM