RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ v5.2.2

огледало од https://github-proxy.rt-thread.io/RT-Thread/rt-thread.git

xieyangrun 189c999f8e add atmel SAM D21 bsp support		пре 8 година
..
quad_decoder.c	189c999f8e add atmel SAM D21 bsp support	пре 8 година
quad_decoder.h	189c999f8e add atmel SAM D21 bsp support	пре 8 година