RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ f837ea41b1a263e2a3dfc2d4d4d9f0dfe31cb670

spiegel van https://github-proxy.rt-thread.io/RT-Thread/rt-thread.git

weety 624d947e56 use __rt_ffs instead of ffs		12 jaren geleden
..
drivers	624d947e56 use __rt_ffs instead of ffs	12 jaren geleden
rtdevice.h	639bd30321 reimplement ringbuffer	12 jaren geleden