RT-Thread/rt-thread: KM https://github.com/RT-Thread/rt-thread.git @ v5.2.0-beta

espejo de https://github-proxy.rt-thread.io/RT-Thread/rt-thread.git

sheltonyu a3a7c6a5d5 [bsp/at32] add support at32f455/456/457 series and support bsp pkg (#9974)		hace 1 año
..
include	a3a7c6a5d5 [bsp/at32] add support at32f455/456/457 series and support bsp pkg (#9974)	hace 1 año
SConscript	a3a7c6a5d5 [bsp/at32] add support at32f455/456/457 series and support bsp pkg (#9974)	hace 1 año