RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ a00cc57487f78629bf3aaa7c3c04708af6fa0800

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bernard a00cc57487 Prepare RT-Thread 1.2.3 release.		11 anni fa
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drivers	a00cc57487 Prepare RT-Thread 1.2.3 release.	11 anni fa
rtdevice.h	0feefc03b6 device/pipe: add a control cmd to get the space left in pipe	12 anni fa