add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally calculated
sha256 6b8b5238047f1613d99149bb02d5ed3384675f3ce74a0a8ba25290bd61abc06c  xscreensaver-5.36.tar.gz