RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ eed673ca6c244401152800b3cecb27ea0f8ef266

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

guo ecf2d82159 sync branch rt-smart. (#6641)		%!s(int64=3) %!d(string=hai) anos
..
SConscript	5ac5d92cbb [serial] 优化发送非阻塞时，serial_close未执行rt_completion_done的问题。	%!s(int64=4) %!d(string=hai) anos
serial.c	ecf2d82159 sync branch rt-smart. (#6641)	%!s(int64=3) %!d(string=hai) anos
serial_v2.c	ecf2d82159 sync branch rt-smart. (#6641)	%!s(int64=3) %!d(string=hai) anos