add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally computed
sha256  f7bc9f702500e205b1560d620f14015fec76dcd6f9e889a946a2ddcc3c344fd0  lxml-4.0.0.tgz