add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally calculated
sha256    b19854c685337ddcec2fe9c22113d2cd14715d52ccd2676abe2fa49b61a2ec4d  lunit-0.5-2.src.rock