RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ eec78d9f5d3f0a944500a1cac5802dfee2befc7b

зеркало из https://github-proxy.rt-thread.io/RT-Thread/rt-thread.git

wangfuan 19f311b498 [libc][delay] fix wrong usleep function		2 лет назад
..
SConscript	6369e89502 [posix] POSIX standard implementation for PSE51 (#5384)	4 лет назад
delay.c	19f311b498 [libc][delay] fix wrong usleep function	2 лет назад
delay.h	075e04e344 the support for PSE51 (#5534)	4 лет назад