RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ 56b640ecb669566732c0fab8824d6f896bf3136e

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heyuanjie87 8b4aadb4db add usb state		12 anni fa
..
class	aa179e4438 cdc_vcom: not to start sending data when the data is already sending	12 anni fa
core	8b4aadb4db add usb state	12 anni fa
SConscript	b4de7cce57 Re-normalizing the repo	13 anni fa